GROUND CLEANING APPARATUS

TECHNICAL FIELD

The present disclosure relates to the field of ground cleaning machines and mopping machines, and in particular, to a cleaning device with a self-cleaning function for floor cleaning.

BACKGROUND

Currently, common ground cleaning devices on the market include a vacuum cleaner, a sweeping robot and a mop, a mopping machine, and a ground cleaning machine. These devices are often limited to either dry sweeping or wet mopping, and wet-mopped floors tend to leave substantial water stains. This not only increases the risk of users slipping but also makes the floor prone to getting dirty again, causing inconvenience in daily life. While various popular ground cleaning machines in recent several years have desirable mopping and vacuum cleaning effects, they typically use a scraper to remove water stains from the roller brush, which doesn't achieve a completely dry mop effect. Such method not only easily damages the scraper and the rolling brush, but also creates significant resistance on the rolling brush. In addition, to improve cleaning effectiveness, usually, in addition to the rolling brush for mopping and cleaning, a ground cleaning machine also carries a vacuum module, resulting in increased noise, complex product structure, high costs, and expensive retail prices.

The present technology of an existing ground cleaning machine or mopping machine combines a vacuum cleaner mechanism and a rolling brush structure. However, products using this approach often require a high-speed motor to achieve strong suction, because a negative pressure of air needs to be used to suck wastewater and dirt. The high-speed motor result in significant noise. However, if a quiet motor is used, costs are high. The complex structure further raises production costs, and the product itself becomes relatively heavy, making it difficult for users to move and more prone to damage. Because power consumption of the high-speed motor is relatively large, an endurance capability of a battery is a big problem. To extend battery life, larger battery packs are required, which increases both costs and product weight.

Another type of existing product follows a different approach, using a structure with a roller brush and a scraper component. However, because no negative pressure is formed, the dirt removing effect is relatively poor. Because a scraping action is performed on the entire rolling brush surface by using the scraper, the dirt and the wastewater gradually flow into a wastewater tank by gravity. In this case, the opening of the wastewater tank is very large; otherwise, the wastewater tank cannot be connected to the scraper. In addition, the capacity of the wastewater tank is limited, and the discharge port needs to be positioned low to allow dirt and wastewater to flow smoothly into the tank.

For the foregoing technical problems, there is a need to provide a new technical solution in this disclosure.

SUMMARY

To resolve the technical problems existing in the present technology, an objective of the present disclosure is to provide a ground cleaning apparatus. The solution is designed skillfully and modularly, so that it is convenient to disassemble and replace core components. This device offers effective cleaning, enables real-time scrubbing for self-cleaning, has low energy consumption and noise, and is cost-effective, reliable, and durable.

This disclosure provides the following technical solutions: a ground cleaning apparatus includes a rolling brush assembly, a shell covering the rolling brush assembly, a transmission motor, a power module, and a control module, where the control module can control the power module to connect with the transmission motor, and the transmission motor drives the rolling brush assembly to rotate.

The ground cleaning apparatus further includes a clear water tank, a wastewater tank, a ground brush module, and a threaded rod assembly.

The ground brush module includes a ground brush holder body and a wastewater tank, a ground brush holder right cover and a ground brush holder left cover are arranged on two sides of the ground brush holder body, and the rolling brush assembly is mounted in the ground brush module through the ground brush holder right cover and the ground brush holder left cover.

An inner side of the ground brush holder body is provided with a dirt holding tank in a shape matching a shape of the threaded rod assembly, the dirt holding tank has a semi-surrounding structure, the semi-surrounding structure of the dirt holding tank is greater than 180 degrees, and a dirt discharging opening is provided at an end along a direction in which the threaded rod assembly and the dirt holding tank transmit wastewater and garbage.

The threaded rod assembly is mounted in the dirt holding tank of the ground brush module through the ground brush holder right cover and the ground brush holder left cover. The threaded rod assembly is provided with a thread set, a gap between a thread edge of the thread set and an inner wall of the dirt holding tank is less than 5 mm, and the clear water tank delivers clear water to an end of the threaded rod assembly away from the dirt discharging opening by using a clear water delivery pipe.

A part of the threaded rod assembly is in squeezing contact with a rolling brush surface of the rolling brush assembly by using the semi-surrounding structure of the dirt holding tank, and relative rotation between the threaded rod assembly and the rolling brush assembly enables wastewater and garbage attracted by the rolling brush to be transmitted to the dirt discharging opening by using the dirt holding tank.

The dirt discharging opening of the dirt holding tank is arranged corresponding to a wastewater tank water inlet of the wastewater tank.

This disclosure further provides the following technical solutions: A ground cleaning apparatus includes a rolling brush assembly, a shell covering the rolling brush assembly, a transmission motor, a power module, and a control module, where the control module can control the power module to connect with the transmission motor, and the transmission motor drives the rolling brush assembly to rotate.

The ground cleaning apparatus further includes a clear water tank, a wastewater tank, a ground brush module, and a threaded rod assembly.

The ground brush module includes a ground brush holder body and a wastewater tank, and the ground brush module is provided with the rolling brush assembly, the ground brush holder body, and the wastewater tank in a horizontal direction in sequence.

End covers are arranged at two sides of the ground brush holder body. An inner side of the ground brush holder body is provided with a dirt holding tank in a shape matching a shape of the threaded rod assembly, the dirt holding tank has a semi-surrounding structure, the semi-surrounding structure of the dirt holding tank is greater than 180 degrees, and a dirt discharging opening is provided at an end along a direction in which the threaded rod assembly and the dirt holding tank transmit wastewater and garbage.

The threaded rod assembly is arranged in the dirt holding tank of the ground brush module, the threaded rod assembly is provided with a thread set, a thread edge of the thread set is arranged close to an inner wall of the dirt holding tank, and the clear water tank delivers clear water to the dirt holding tank or the rolling brush assembly by using a clear water delivery pipe.

The dirt discharging opening is arranged corresponding to a wastewater tank water inlet of the wastewater tank.

As a preferred solution of the ground cleaning apparatus in this disclosure, a threaded rod body of the threaded rod assembly is provided with a first thread set and a second thread set, a thread diameter of the second thread set is greater than a thread diameter of the first thread set, a thread pitch of the second thread set is less than a thread pitch of the first thread set, the second thread set is arranged corresponding to the dirt discharging opening, and the first thread set and the second thread set are flexible thread sets.

As a preferred solution of the ground cleaning apparatus in this disclosure, a gap between the thread edge of the threaded rod assembly and the inner wall of the dirt holding tank is less than 1 mm, or ranges from 0.2 to 0.5 mm.

As a preferred solution of the ground cleaning apparatus in this disclosure, the threaded rod assembly passively rotates, and the rolling brush assembly rotates to drive the threaded rod assembly to passively rotate; or the threaded rod assembly is connected to a motor, to movably rotate.

As a preferred solution of the ground cleaning apparatus in this disclosure, a lower edge of the dirt discharging opening is higher than a horizontal position of a central axis of the threaded rod, and an upper edge of the dirt discharging opening is higher than an upper thread edge of the threaded rod assembly; and a width of the dirt discharging opening is less than or equal to a width of the second thread set.

As a preferred solution of the ground cleaning apparatus in this disclosure, the dirt discharging opening is provided with a propping block, and the propping block props a wastewater tank water inlet cover open.

As a preferred solution of the ground cleaning apparatus in this disclosure, a ratio of a diameter of the rolling brush assembly to a diameter of the threaded rod assembly ranges from 4:1 to 1:1.

As a preferred solution of the ground cleaning apparatus in this disclosure, the ground brush holder right cover and the ground brush holder left cover are each provided with a rolling brush lifting handle mounting slot, an inner wall of at least one rolling brush lifting handle mounting slot is provided with an elastic electrically-conductive component, the rolling brush assembly is mounted from top to bottom, an electrically-conductive component is mounted on a side surface of at least one rolling brush lifting handle, the electrically-conductive component matches the elastic electrically-conductive component, and two sides of the rolling brush assembly are provided with bearings.

As a preferred solution of the ground cleaning apparatus in this disclosure, the ground brush holder right cover and the ground brush holder left cover are respectively provided with a threaded rod rotation head mounting slot and a threaded rod mounting opening, a threaded rod rotation head at an end of the threaded rod assembly matches the threaded rod rotation head mounting slot, a threaded rod end cover is fixedly connected to the threaded rod mounting opening, and a bearing is arranged on at least one side of the threaded rod end cover of the threaded rod assembly.

As a preferred solution of the ground cleaning apparatus in this disclosure, the clear water delivery pipe directly sprays clear water onto the rolling brush surface.

As a preferred solution of the ground cleaning apparatus in this disclosure, a shell of the ground brush module is provided with a ground brush flip-over cover, the ground brush flip-over cover is provided with a flip-over cover front lock male end and a flip-over cover rear lock female end, the flip-over cover front lock male end is adapted to a flip-over cover front lock female end, and the flip-over cover rear lock female end is adapted to a flip-over cover lock strip.

As a preferred solution of the ground cleaning apparatus in this disclosure, the ground cleaning apparatus is further provided with a rolling brush detection structure, where the rolling brush detection structure is able to detect whether a rolling brush layer on the rolling brush assembly has water.

As a preferred solution of the ground cleaning apparatus in this disclosure, the rolling brush detection structure includes two electrically-conductive contacts arranged at an interval, the electrically-conductive contacts are arranged in contact with the rolling brush layer on the rolling brush assembly, the two electrically-conductive contacts are respectively connected with the power module through a wire, and whether the rolling brush layer has water is detected through whether electricity is conducted between the two electrically-conductive contacts.

As a preferred solution of the ground cleaning apparatus in this disclosure, a plurality of first water replenishment holes are provided on the ground brush module, the first water replenishment holes face the rolling brush assembly, and the first water replenishment holes are connected to the clear water tank by using the clear water delivery pipe; and a second water replenishment hole is provided on the dirt holding tank, the second water replenishment hole is arranged at an end of the dirt holding tank away from the dirt discharging opening, and the second water replenishment hole is connected to the clear water tank by using the clear water delivery pipe.

As a preferred solution of the ground cleaning apparatus in this disclosure, an air hole is provided on the wastewater tank.

As a preferred solution of the ground cleaning apparatus in this disclosure, an inner wall of the wastewater tank is provided with a blocking slot, and a side wall of the blocking slot corresponds to the air hole.

As a preferred solution of the ground cleaning apparatus in this disclosure, the air hole is covered with a waterproof breathable film.

As a preferred solution of the ground cleaning apparatus in this disclosure, water-blocking cotton is accommodated in the blocking slot.

As a preferred solution of the ground cleaning apparatus in this disclosure, the clear water tank delivers clear water to an end of the dirt holding tank away from the dirt discharging opening by using the clear water delivery pipe.

In a technical solution of this disclosure, a ground cleaning apparatus includes a rolling brush assembly, a shell covering the rolling brush assembly, a transmission motor, a power module, and a control module, where the control module can control the power module to connect with the transmission motor, and the transmission motor drives the rolling brush assembly to rotate.

The ground cleaning apparatus further includes a clear water tank, a wastewater tank, a ground brush module, and a threaded rod assembly.

The dirt discharging opening is arranged corresponding to a wastewater tank water inlet of the wastewater tank.

The threaded rod assembly includes a first thread set and a second thread set, a thread pitch of the second thread set is less than a thread pitch of the first thread set, the second thread set is arranged corresponding to the dirt discharging opening, the first thread set and the second thread set are flexible thread sets, a length of the first thread set is greater than a length of the second thread set, and the first thread set and the second thread set are flexible thread sets.

As a preferred solution of the ground cleaning apparatus in this disclosure, an end cover of the threaded rod assembly is detachably fastened to an end cover on a side of the ground brush holder body, a thread diameter of the second thread set is greater than a thread diameter of the first thread set, the second thread set is arranged corresponding to the dirt discharging opening, a width of the second thread set is greater than or equal to a width of the dirt discharging opening, and a length of the first thread set is greater than a length of the second thread set; and the thread edge of the threaded rod assembly is arranged close to or attached tightly to the inner wall of the dirt holding tank.

According to an aspect, this disclosure provides a water tank for a ground cleaning machine, including a housing, a wastewater cover assembly, and a clear water cover assembly, where the water tank is horizontally arranged along a length direction, and a wastewater opening of the wastewater cover assembly is connected to a dirt discharging opening of a cleaning device; the housing includes a partition board, a first accommodating cavity, and a second accommodating cavity, the partition board divides the inside of the housing into the first accommodating cavity and the second accommodating cavity, the first accommodating cavity can accommodate wastewater and dirt, and the second accommodating cavity can accommodate clear water.

The clear water cover assembly is connected to the second accommodating cavity, and the clear water cover assembly is provided with a delivery hole; and the wastewater cover assembly is connected to the first accommodating cavity.

As a preferred solution of the water tank in this disclosure, an air hole is provided on the wastewater cover assembly, the air hole is in communication with the first accommodating cavity, and both the wastewater opening and the air hole are arranged at an upper portion of the wastewater cover assembly.

As a preferred solution of the water tank in this disclosure, one end of the partition board close to the wastewater cover assembly is arranged at an upper portion of an inner wall of the housing, one end of the partition board close to the clear water cover assembly is arranged at a lower portion of the inner wall of the housing, and the partition board extends from an upper portion of the end close to the wastewater cover assembly to a lower portion of the end close to the clear water cover assembly; and the air hole of the wastewater cover assembly is covered with a waterproof breathable film, and/or an inner wall of the wastewater cover assembly is provided with a blocking slot, the air hole corresponds to the blocking slot, and an opening direction of the blocking slot is arranged perpendicular to the air hole.

As a preferred solution of the water tank in this disclosure, water-blocking cotton is accommodated in the blocking slot; or a filter mesh is arranged in the first accommodating cavity, and the filter mesh can accommodate dirt.

As a preferred solution of the water tank in this disclosure, the wastewater cover assembly includes an inner cover, a regulation cover, and a fixing member, the regulation cover is sleeved over the inner cover, and the fixing member is threaded through the regulation cover and fixedly connected to the inner cover; and a wastewater opening is provided on the inner cover, a through-hole and a blocking portion are arranged on the regulation cover, and the regulation cover is configured to be rotatably regulated so that the through-hole on the regulation cover corresponds to the wastewater opening or the blocking portion on the regulation cover corresponds to the wastewater opening.

As a preferred solution of the water tank in this disclosure, the regulation cover is provided with a plurality of first air holes, a surface of the inner cover is provided with an air-permeable slot, the bottom of the air-permeable slot is provided with a plurality of second air holes, and second water-blocking cotton is accommodated in the air-permeable slot.

As a preferred solution of the water tank in this disclosure, a second sealing slot is arranged on a surface of the inner cover, the second sealing slot is arranged around an outer side of the air-permeable slot, and a second sealing ring is arranged in the second sealing slot.

As a preferred solution of the water tank in this disclosure, the housing has a cylindrical structure, and the wastewater cover assembly is hermetically connected to the first accommodating cavity of the housing by using a circular port; and/or the clear water cover assembly is hermetically connected to the second accommodating cavity of the housing by using a circular port.

As a preferred solution of the water tank in this disclosure, the partition board is arranged in a cambered structure or a beveled structure.

As a preferred solution of the water tank in this disclosure, one end of the partition board close to the wastewater cover assembly is a first partition portion, and the bottom of the first partition portion is not higher than the bottom of the wastewater opening of the wastewater cover assembly.

As a preferred solution of the water tank in this disclosure, a ratio of a distance between one end of the partition board close to the wastewater cover assembly and a port of the housing close to the wastewater cover assembly to a length of the housing ranges from ⅕ to ⅓; and/or a ratio of a distance between one end of the partition board close to the clear water cover assembly and a port of the housing close to the clear water cover assembly to a length of the housing ranges from ⅕ to ⅓.

As a preferred solution of the water tank in this disclosure, the partition board includes a first partition portion, a second partition portion, and a third partition portion, and the partition board makes a cambered transition from the first partition portion to the second partition portion, and makes a cambered transition from the second partition portion to the third partition portion; and the first partition portion and/or the third partition portion is arranged perpendicular to an axis direction of the housing, and the second partition portion and the axis direction of the housing are consistent or form an angle less than 90 degrees.

As a preferred solution of the water tank in this disclosure, the wastewater cover assembly is hermetically connected to the housing by using a circular sealing ring; and the clear water cover assembly is hermetically connected to the housing by using a circular sealing ring.

As a preferred solution of the water tank in this disclosure, a fastening component connected to a device body of the cleaning device is arranged on the regulation cover, and the through-hole on the regulation cover is in communication with the wastewater opening when the water tank is mounted onto the cleaning device by using the fastening component; and the blocking portion on the regulation cover corresponds to the wastewater opening when the water tank is separated from the cleaning device by using the fastening component.

As a preferred solution of the water tank in this disclosure, a filter mesh is arranged in the first accommodating cavity, and the filter mesh can accommodate dirt.

As a preferred solution of the water tank in this disclosure, the clear water cover assembly includes a clear water cover body; and the clear water cover body is provided with a delivery passage, the clear water cover body is provided with a delivery hole, the delivery hole communicates with the delivery passage, one end of the delivery passage extends into the bottom of the clear water cover assembly or the bottom of the second accommodating cavity, the other end of the delivery passage is connected to a water pumping apparatus of the cleaning device through the delivery hole, an elastic member and a sealing block are arranged in the delivery passage, and the sealing block can seal the delivery hole under an elastic force of the elastic member.

As a preferred solution of the water tank in this disclosure, the wastewater cover assembly includes an end cover body and an end cover regulation member; and the end cover body is provided with a wastewater opening, the end cover regulation member is movably connected to the end cover body, the end cover regulation member is provided with a through-hole and a blocking portion, and the end cover regulation member is configured to be rotatably regulated so that the through-hole corresponds to the wastewater opening or the blocking portion corresponds to the wastewater opening.

According to another aspect, this disclosure provides another water tank for a cleaning device, including a housing, a wastewater cover assembly, and a clear water cover assembly, where the water tank is horizontally arranged along a length direction, and a wastewater opening of the wastewater cover assembly is connected to a dirt discharging opening of a cleaning device; the housing includes a partition board, a first accommodating cavity, and a second accommodating cavity, the partition board is arranged perpendicular to an axis direction of the housing, the partition board can divide the inside of the housing into the first accommodating cavity and the second accommodating cavity, the first accommodating cavity is not in communication with the second accommodating cavity, the first accommodating cavity can accommodate wastewater and dirt, and the second accommodating cavity can accommodate clear water; the clear water cover assembly is connected to the second accommodating cavity, and the clear water cover assembly is provided with a delivery hole; and the wastewater cover assembly is connected to the first accommodating cavity, and the wastewater opening of the wastewater cover assembly is arranged at an upper portion of the wastewater cover assembly.

According to an aspect, this disclosure provides a ground cleaning machine cleaning device, including a motor assembly, a control module, a power module, a cleaning module, and a device body, where the cleaning module and a water tank are both mounted on the device body, and the water tank is configured to store wastewater and dirt cleaned by the cleaning module and provide clear water for the cleaning module; the cleaning module includes a rolling brush assembly, a threaded rod assembly, and a dirt holding tank; the threaded rod assembly is mounted rotatably in the dirt holding tank, the threaded rod assembly is attached tightly to or arranged close to an inner cavity of the dirt holding tank, the dirt holding tank is provided with an elongated dirt receiving opening facing the rolling brush assembly, a dirt discharging opening is provided in a direction of delivering water and dirt along the dirt holding tank, the dirt discharging opening is in communication with a first accommodating cavity, the threaded rod assembly is attached tightly to the rolling brush assembly, the threaded rod assembly is coverable of squeezing the water and the dirt on the rolling brush assembly, cooperation between the dirt holding tank and the threaded rod assembly is coverable of transmitting the water and the dirt to the dirt discharging opening, and the dirt discharging opening is connected to the first accommodating cavity; and the motor assembly can drive the rolling brush assembly in the cleaning module to rotate, the control module can control the cleaning device to run, and the power module can provide electric energy for the cleaning device.

As a preferred solution of the cleaning device in this disclosure, the cleaning device further includes the water tank according to the foregoing technical solution; a distance between an axial center of the threaded rod assembly and an axial center of the rolling brush assembly is less than a sum of a radius of the threaded rod assembly and a radius of the rolling brush assembly; and a fastening component is arranged on the water tank, a first mounting structure is arranged on the device body, and the water tank can be mounted onto or dismounted from the cleaning device by using the fastening component and the first mounting structure.

As a preferred solution of the cleaning device in this disclosure, a surface of the wastewater cover assembly is provided with a mounting slot and a socket, the mounting slot is a U-shaped mounting slot arranged around an outer side of the wastewater opening, and an opening of the mounting slot faces the socket; and the first mounting structure is a convex edge arranged around an end of the dirt discharging opening, the convex edge can extend into the socket, the convex edge is moved from the socket by rotating the regulation cover and is snapped into the mounting slot, the water tank is mounted on the device body, and a through-hole on the regulation cover corresponds to the wastewater opening.

As a preferred solution of the cleaning device in this disclosure, an accommodating slot is provided at one end of the rolling brush assembly, the motor assembly is fixedly arranged on the device body, and the rolling brush assembly is sleeved over the motor assembly by using the accommodating slot; and the motor assembly includes a drive motor, a rolling brush joint is fixedly connected to an output end of the drive motor, a mounting groove matching the rolling brush joint is provided in the accommodating slot, and the motor assembly is configured to drive, by using the rolling brush joint and the mounting groove, the rolling brush assembly to rotate.

As a preferred solution of the cleaning device in this disclosure, the rolling brush joint is provided with a convex strip in a radial direction, an angle between a length direction of the convex strip and a length direction of the rolling brush assembly is less than 90 degrees, and along a direction from an end of the convex strip close to the drive motor to an end of the convex strip away from the drive motor, an axis direction of the convex strip is inclined toward a rotation direction of the rolling brush assembly during advancing.

Compared with the existing technology, the technical solutions of this disclosure have at least the following beneficial technical effects.

Although there are many products for existing ground cleaning machines or mopping machines, a main technical solution thereof is a vacuum cleaner mechanism plus a rolling brush structure, typical of which are various products of TINECO and DREAME. However, to pursue a large suction, a high-speed motor usually needs to be used for a product of this technology road, because a negative pressure of air needs to be used to suck wastewater and dirt. The high-speed motor causes a large noise in the product. However, if a quiet motor is used, costs are high.

Meanwhile, wastewater and dirt also need to be separated, and a related structure is arranged to prevent wastewater from entering a motor to cause damage. Consequently, the structure of the product is complex, and high costs are further caused. Design space of the product is limited, a water tank usually needs to be arranged on a rod body, and even a wastewater tank and a clear water tank both need to be arranged on a rod body. Consequently, the product has an unstable center of gravity, and is prone to fall. Due to the complex structure, the product itself is relatively heavy, and is not easy for a user to move.

More importantly, because power consumption of the high-speed motor is relatively large, an endurance capability of a battery is a big problem. Generally, in a high-power working state, it is very uncommon for a product on the market to be coverable of enduring for 60 minutes. To improve the endurance capability, a quantity of battery packs is increased. As a result, costs are increased, and product weight is further increased.

Among existing products, there is a product of a technical road. For example, a ground cleaning machine product of DIISEA has no vacuum cleaner structure, and the product structure thereof is a rolling brush plus a scraper assembly. Wastewater and dirt on the rolling brush is scraped into a wastewater tank by using a scraper. This technical road saves such an air negative pressure structure as a vacuum cleaner. However, because no negative pressure is formed, the dirt removing effect is relatively poor. In addition, scraping efficiency of the scraper for dirt is poor, and the scraper cannot effectively remove the water on the rolling brush, so that many water stains remain on the ground. If the scraper applies increased pressure to the rolling brush, an effect of squeezing and removing water from the rolling brush may be improved. However, resistance between parts is relatively large, the parts are easily damaged, and the components are easily stuck during rotation. In addition, the fiber-type rolling brush surface is pressed to be excessively “flat”, which is not beneficial for the rolling brush to attract garbage on the ground. In addition, because a scraping action is performed on the entire rolling brush surface by using the scraper, the dirt and the wastewater gradually flow into a wastewater tank by taking advantage of the gravity principle. In this case, the opening of the wastewater tank is very large; otherwise, the wastewater tank cannot be connected to the scraper. In addition, the capacity of the wastewater tank is limited, and the wastewater and dirt can gradually flow into the wastewater tank only when a dirt discharging opening is arranged at a relatively low position.

The ground cleaning apparatus such as a ground cleaning machine or a mopping machine involved in the technical solutions of this disclosure is applicable to a hard ground such as a tiled ground, a wooden floor, or a concrete ground. The principle of an Archimedes screw pump is skillfully used. Innovation is made based on the principle. A unique cleaning module combining a threaded rod, a dirt holding tank, and a rolling brush is developed. A rolling brush assembly, a threaded rod assembly, and a dirt holding tank assembly that are sequentially arranged in a horizontal direction collaborate closely with each other, and interact with each other. Wastewater and dirt on the rolling brush can be removed, and the wastewater and the dirt can be quickly transmitted to a dirt discharging opening through the interaction between the threaded rod assembly, the rolling brush assembly, and the dirt holding tank assembly.

When the threaded rod is driven by the rolling brush to rotate or the threaded rod is driven by the motor to rotate, on one hand, the threaded rod rotates about an axis of the threaded rod, and the thread of the threaded rod also rolls along an inner surface of the dirt holding tank. In this way, a sealed cavity similar to a pump is formed. Each time the threaded rod rotates through one circle, liquid or dirt in the sealed cavity is pushed forward by a pitch. With continuous rotation of the threaded rod, water or dirt removed from the rolling brush by the thread is pressed from a sealed cavity to another sealed cavity in a spiral transmission manner, and is finally pressed out of the dirt holding tank and enters the dirt discharging opening. During operation, some attraction pressure is formed, facilitating transmission. The sealed cavity herein does not particularly refer to a completely sealed state, but is merely a visual expression.

The cleaning module of this disclosure has advantages such as a simple structure, safe and reliable operation, and convenient use and maintenance. Because the vacuum cleaner module is removed, a large-capacity battery is not required to support work, working endurance is long, and working noise is low, the product has a simple structure, and the product can be sufficiently lightweight, which is beneficial for a user to move the product.

The threaded rod assembly may passively rotate or movably rotate, and during passive rotation, the rolling brush assembly rotates to drive the threaded rod assembly to passively rotate. In this case, the thread edge of the threaded rod assembly is arranged close to but does not touch the inner wall of the dirt holding tank, so as to avoid excessively large resistance and being prone to get stuck. If the threaded rod assembly adopts the active rotation manner, the threaded rod assembly is connected to a motor to perform active rotation. A thread edge of the threaded rod assembly may be arranged close to, attached tightly to, or arranged in contact with the inner wall of the dirt holding tank. Although there is some resistance, a drive motor of the threaded rod can overcome the related resistance.

A threaded rod body of the threaded rod assembly is provided with a first thread set and a second thread set, a thread diameter of the second thread set is greater than a thread diameter of the first thread set, a thread pitch of the second thread set is less than a thread pitch of the first thread set, the second thread set is arranged corresponding to the dirt discharging opening, and the first thread set and the second thread set are flexible thread sets. The length of the first thread set is greater than that of the second thread set, the thread sets are driven by the rolling brush to rotate, and the thread sets are designed close to the dirt holding tank. Such a design of a structural combination is more beneficial to generating a negative pressure, and is more beneficial to generating a negative pressure suction effect in the cavity of the dirt holding tank through relative motion between the threaded rod, the dirt holding tank, and the rolling brush, but a mechanism related to a vacuum cleaner is not required.

Compared with the existing technology, the technical solution of this disclosure uses a brand-new cleaning principle, has a good ground cleaning effect, and can implement real-time rubbing and self-cleaning; and has low energy consumption and low noise. The scheme is ingenious in design, modular in design. It is convenient to disassemble and replace core components, the cleaning effect is good, costs are low, and the product is reliable and durable.

BRIEF DESCRIPTION OF THE DRAWINGS

To make the technical solutions of the present disclosure clearer, the accompanying drawings for illustrating the embodiments or the existing technology are given briefly below. Apparently, the accompanying drawings are only for the exemplary purpose of the present disclosure, and a person of ordinary skill in the art can derive other drawings from the accompanying drawings without creative efforts.

FIG. 1 is a schematic diagram of a three-dimensional structure of a ground cleaning apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a three-dimensional structure of a ground cleaning apparatus (including no lever module) according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a side plane structure of FIG. 2;

FIG. 4 is a schematic diagram of a cross-sectional structure along A-A in FIG. 3;

FIG. 5 is a schematic diagram of a cross-sectional structure along B-B in

FIG. 3;

FIG. 6 is a schematic diagram of a top plane structure of FIG. 2;

FIG. 7 is a schematic diagram of a cross-sectional structure along C-C in FIG. 6;

FIG. 8 is a schematic diagram of a cross-sectional structure along D-D in FIG. 6;

FIG. 9 is a schematic diagram of an exploded structure of a manner in FIG. 2;

FIG. 10 is a schematic diagram of a three-dimensional structure from a perspective of an example of a ground brush flip-over cover according to an embodiment of the present disclosure;

FIG. 11 is a schematic diagram of a three-dimensional structure from another perspective of an example of a ground brush flip-over cover according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of a cross-sectional structure in a cross-sectional direction in FIG. 10;

FIG. 13 is a schematic diagram of a three-dimensional structure of another example of a ground brush flip-over cover according to an embodiment of the present disclosure;

FIG. 14 is a schematic diagram of a three-dimensional structure of a rolling brush assembly according to an embodiment of the present disclosure;

FIG. 15 is a schematic diagram of a three-dimensional structure of a radial cross section in FIG. 14;

FIG. 16 is a schematic diagram of a three-dimensional structure of a rolling brush lifting handle, a transmission motor assembly, and a rolling brush joint according to an embodiment of the present disclosure;

FIG. 17 is a schematic diagram of a cross-sectional structure in a cross-sectional direction in FIG. 16;

FIG. 18 is a schematic diagram of a three-dimensional structure of a rolling core, a collodion cotton rolling brush, and a rolling brush lifting handle according to an embodiment of the present disclosure;

FIG. 19 is a schematic diagram of an exploded structure of another manner in FIG. 2;

FIG. 20 is a schematic diagram of an exploded structure from a perspective of a ground brush module, a threaded rod assembly, and a wastewater tank;

FIG. 21 is a schematic diagram of an exploded structure from another perspective of a ground brush module, a threaded rod assembly, and a wastewater tank;

FIG. 22 is a schematic diagram of a three-dimensional structure of a threaded rod assembly according to an embodiment of the present disclosure;

FIG. 23 is a schematic diagram of a three-dimensional structure of a wastewater tank according to the present disclosure;

FIG. 24 is a schematic diagram of a cross-sectional structure of a wastewater tank according to the present disclosure;

FIG. 25 is a schematic diagram of a cross-sectional structure of a ground cleaning apparatus according to another embodiment of the present disclosure;

FIG. 26 is a schematic diagram of an exploded structure from a perspective of the ground cleaning apparatus according to the embodiment in FIG. 25;

FIG. 27 is a schematic diagram of an exploded structure of an upper cover in FIG. 26;

FIG. 28 is a schematic diagram of a partial enlarged structure of a part Y in FIG. 27;

FIG. 29 is a schematic diagram of an exploded structure from another perspective of the ground cleaning apparatus in FIG. 26;

FIG. 30 is a schematic diagram of an exploded structure of a second water pump and a ground brush holder body according to the present disclosure;

FIG. 31 is a schematic diagram of a three-dimensional structure of a wastewater cover assembly according to another embodiment of the present disclosure;

FIG. 32 is a schematic diagram of an exploded structure of the wastewater cover assembly in FIG. 31;

FIG. 33 is a schematic diagram of another exploded structure of the wastewater cover assembly in FIG. 31;

FIG. 34 is a schematic diagram of a three-dimensional structure from a perspective of an inner cover in FIG. 33;

FIG. 35 is a schematic diagram of a three-dimensional structure from another perspective of an inner cover in FIG. 33;

FIG. 36 is a schematic diagram of an exploded structure of an inner cover in FIG. 33;

FIG. 37 is a schematic diagram of a cross-sectional three-dimensional structure of an inner cover in FIG. 36;

FIG. 38 is a schematic diagram of a three-dimensional structure from a perspective of a regulation cover in FIG. 33;

FIG. 39 is a schematic diagram of a three-dimensional structure from another perspective of a regulation cover in FIG. 33;

FIG. 40 is a schematic diagram of a three-dimensional structure of a fixing member in FIG. 33;

FIG. 41 is a schematic diagram of a three-dimensional structure of a clear water cover assembly according to this application;

FIG. 42 is a schematic diagram of a cross-sectional three-dimensional structure of the clear water cover assembly in FIG. 41;

FIG. 43 is a schematic diagram of an exploded structure of the clear water cover assembly in FIG. 41;

FIG. 44 is a schematic diagram of a three-dimensional structure of a sealing block in the clear water cover assembly according to this application;

FIG. 45 is a schematic diagram of a three-dimensional structure of a water tank according to this application;

FIG. 46 is a schematic diagram of an exploded structure of the water tank in FIG. 45;

FIG. 47 is a schematic diagram of a cross-sectional three-dimensional structure of the water tank in FIG. 45;

FIG. 48 is a schematic diagram of an exploded structure of a cleaning apparatus according to this disclosure;

FIG. 49 is a schematic diagram of a partial enlarged structure of a part R in FIG. 48;

FIG. 50 is a schematic diagram of another exploded structure of a ground cleaning apparatus according to this disclosure;

FIG. 51 is a schematic diagram of an exploded structure from another perspective in FIG. 50;

FIG. 52 is a schematic diagram of a cross-sectional structure of a ground cleaning apparatus according to this disclosure;

FIG. 53 is a schematic diagram of a three-dimensional structure of a rolling brush assembly and a motor assembly according to this disclosure;

FIG. 54 is a schematic diagram of a cross-sectional three-dimensional structure in FIG. 53;

FIG. 55 is a schematic diagram of an exploded structure of a rolling brush assembly and a motor assembly according to this disclosure;

FIG. 56 is a schematic diagram of a cross-sectional three-dimensional structure of the rolling brush assembly in FIG. 55;

FIG. 57 is a schematic diagram of another cross-sectional three-dimensional structure of a cleaning apparatus according to this disclosure; and

FIG. 58 is a schematic diagram of another cross-sectional structure of a cleaning apparatus according to this disclosure.

FIG. 59 is a schematic diagram of a three-dimensional structure of another embodiment of a ground cleaning apparatus according to this disclosure.

- 100—lever module, 200—ground brush module, 300—rolling brush assembly, 400—threaded rod assembly, 500—wastewater tank, 700—power module, 101—control handle, 102—lever body, 103—clear water tank, 104—rotary joint, 105—clear water delivery pipe, 201—ground brush holder right cover, 202—ground brush holder left cover, 203—ground brush holder body, 204—dirt holding tank, 205—rolling brush lifting handle mounting slot, 206—threaded rod rotation head mounting slot, 207—threaded rod mounting opening, 208—flip-over cover front lock female end, 209—elastic electrically-conductive component, 210—flip-over cover propping button, 211—rear lock male end, 212—dirt discharging opening, 213—dirt discharging opening propping block, 214—magnetic attraction sideboard, 215—flip-over cover lock strip, 216—lock strip button, 301—rolling brush lifting handle 302—rolling brush body, 303—transmission gear-box motor, 304—rolling brush bearing, 305—first rolling brush shaft, 306—rolling brush bearing pedestal, 307—rolling brush end cover, 308—second rolling brush shaft, 309—rolling brush sleeve bearing, 310—rolling brush joint, 311—motor output shaft, 312—transmission motor holder, 313—rolling core, 314—collodion cotton rolling brush, 315—electrically-conductive component, 316—mounting groove, 317—first rolling brush shaft connection pipe, 401—threaded rod body, 402—first thread set, 403—second thread set, 404—threaded rod end cover, 405—sealing ring, 406—threaded rod lifting handle, 407—locking mechanism, 409—threaded rod rotation head, 410—shockproof plug, 501—wastewater tank drainage cover, 502—wastewater tank water inlet cover, 503—distortion spring, 504—magnet, 505—wastewater tank water inlet, 600—ground brush flip-over cover, 601—anti-collision strip, 602—flip-over cover front lock male end, 603—flip-over cover rear lock female end, 604—inner barrier strip, 605—pressing roller, and 606—pressing roller elastic connection component;
- 1—cleaning module, 7—water tank, 8—wastewater cover assembly, 9—clear water cover assembly, 300—rolling brush assembly, 110—accommodating slot, 111—rolling brush body, 112—mounting handle, 113—connection shaft, 114—rolling brush bearing, 115—mounting groove, 116—rolling shaft, 118—magnet, 131—dirt receiving opening, 134—convex edge, 180—first water replenishment hole, 181—first water pump, 182—second water pump, 221—upper cover, 222—first upper cover, 223—second upper cover, 224—groove, 225—water delivery strip, 226—second water replenishment hole, 61—first cover body, 62—second cover body, 63—motor assembly, 631—drive motor, 633—rolling brush joint, 634—motor housing, 635—convex strip, 70—housing, 701—partition board, 702—first accommodating cavity, 703—second accommodating cavity, 704—first opening, 705—second opening, 706—filter mesh, 707—first partition portion, 708—second partition portion, 709—third partition portion, 801—wastewater opening, 802—annular sealing slot, 804—air hole, 805—blocking slot, 806—water-blocking cotton, 81—inner cover, 82—regulation cover, 83—fixing member, 811—snapping protrusion, 812—first limit block, 813—second limit block, 814—wastewater cover sealing ring, 815—air-permeable slot, 816—second air hole, 817—second water-blocking cotton, 818—second sealing slot, 819—second sealing ring, 820—first air hole, 821—through-hole, 822—blocking portion, 823—first spring plate, 824—second spring plate, 825—first snapping slot, 826—second snapping slot, 827—protrusion block, 828—mounting slot, 829—socket, 90—clear water cover body, 901—clear water cover sealing ring, 91—first delivery cover, 911—first delivery passage, 9111—filter member, 912—second delivery passage, 9121—elastic member, 9122—sealing block, 9123—stop portion, 9124—water passing hole, 9125—sealing end, 9126—annular spring base, 913—delivery cover, 914—connection cover, 915—engagement cover, 916—positioning member, 92—second delivery cover, 921—delivery hole, and 922—pressure regulation valve.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The embodiments of the present disclosure are described in detail below, with examples of the embodiments shown in the drawings, where identical or similar reference numerals throughout indicate identical or similar elements or elements with identical or similar functions. The embodiments that are described with reference to the accompanying drawings are exemplary, and are used to interpret the present disclosure, instead limiting the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the disclosed embodiments without creative efforts shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be understood that orientation or position relationships indicated by the terms such as “upper”, “lower”, “left”, “right”, “top”, “bottom”, “inner”, “outer”, “front end”, “rear end”, “two ends”, “one end”, and “the other end” are based on orientation or position relationships shown in the accompanying drawings, and are used only for ease and brevity of illustration and description of the present disclosure, rather than indicating or implying that the mentioned apparatus or element needs to have a particular orientation or needs to be constructed and operated in a particular orientation. Therefore, such terms should not be construed as limiting of the present disclosure. In the descriptions of the present disclosure, unless otherwise explicitly specified, “a plurality of” means two or more than two. In addition, terms “first” and “second” are merely used for description and should not be understood as indicating or implying relative importance.

In the description of the present disclosure, unless otherwise explicitly specified or defined, the terms such as “equipped with”, “provided with”, “connect”, “mount”, “sleeve”, “open”, and “fix” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediary, or internal communication between two elements, or interaction between two elements. Persons of ordinary skill in the art may understand the specific meanings of the foregoing terms in the present disclosure according to specific situations.

Embodiment A

Refer to FIG. 1 to FIG. 22. As shown in FIG. 1 to FIG. 22, a ground cleaning apparatus provided in this embodiment includes related components such as a rolling brush assembly and a threaded rod assembly.

As shown by components with related marks in FIG. 1 to FIG. 22, and in particular in FIG. 1 to FIG. 5, it can be seen that a lever module 100 includes a control handle 101, a lever body 102, a clear water tank 103, and a rotary joint 104. A clear water delivery pipe 105 is arranged inside the rotary joint 104. The clear water delivery pipe 105 is connected to a threaded rod assembly of a ground brush module, or is connected to a housing of a ground brush holder, and directly sprays water onto a rolling brush body. Preferably, the clear water delivery pipe 105 is connected to one end, away from a dirt discharging opening 212, of the threaded rod assembly of the ground brush module.

As shown in FIG. 1 to FIG. 22, especially in FIG. 6 to FIG. 13 and FIG. 19 to FIG. 21, it can be known that the ground brush module 200 includes a ground brush holder right cover 201, a ground brush holder left cover 202, a ground brush holder body 203, a dirt holding tank 204 of the ground brush holder, a rolling brush lifting handle mounting slot 205, a threaded rod rotation head mounting slot 206, a threaded rod mounting opening 207, a flip-over cover front lock female end 208, an elastic electrically-conductive component 209 such as a pogo pin, a flip-over cover propping button 210, a rear lock male end 211, a dirt discharging opening 212 of the ground brush holder, a dirt discharging opening propping block 213, a magnetic attraction sideboard 214, a flip-over cover lock strip 215, and a lock strip button 216. The lock strip button is pressed to drive the flip-over cover lock strip to move along the axial direction of the rolling brush, so that a buckled state between the rear locking male end 211 and the flip-over cover rear locking female end 603 is loosened. The flip-over cover propping button 210 jacks up and separates a ground brush flip-over cover 600, and after the ground brush flip-over cover 600 is lifted up, a buckled relationship between a flip-over cover front lock female end and the flip-over cover front lock female end may be further loosened. A wastewater tank 500 is connected to the ground brush module. The wastewater tank 500 includes a wastewater tank drainage cover 501, a wastewater tank water inlet cover 502, a distortion spring 503, a magnet 504, and a wastewater tank water inlet 505. The ground brush module further includes a ground brush flip-over cover 600, an anti-collision strip 601, a flip-over cover front lock male end 602, a flip-over cover rear locking female end 603, an inner barrier strip 604, a pressing roller 605, and a pressing roller elastic connection component 606. The ground brush module further includes a power module 700.

According to FIG. 14 to FIG. 21 and FIG. 7 to FIG. 13, it can be known that the rolling brush assembly 300 includes a rolling brush lifting handle 301, a rolling brush body 302, a transmission gear-box motor 303, a rolling brush bearing 304, a first rolling brush shaft 305, a rolling brush bearing pedestal 306, a rolling brush end cover 307, a second rolling brush shaft 308, a rolling brush sleeve bearing 309, a rolling brush joint 310, a motor output shaft 311, a transmission motor holder 312, a rolling core 313, a collodion cotton rolling brush 314, an electrically-conductive component 315, for example, an electrically-conductive sheet with a groove, a mounting groove 316 of the rolling brush joint, and a first rolling brush shaft connection pipe 317.

It may be known according to FIG. 7 to FIG. 9 and FIG. 19 to FIG. 22 that, the threaded rod assembly 400 includes: a threaded rod body 401, a first thread set 402, a second thread set 403, a threaded rod end cover 404, a sealing ring 405, a threaded rod lifting handle 406, a locking mechanism 407, a threaded rod bearing (arranged inside but not shown) 408, a threaded rod rotation head 409, and a shockproof plug 410 (made of a flexible material such as silicone).

According to FIG. 1 to FIG. 22, the ground cleaning apparatus involved in the present disclosure mainly includes a control module, a ground brush module, a clear water tank, a wastewater tank, a rolling brush assembly, and a threaded rod assembly. The control module may be similar to a ground cleaning machine, a sweeping machine, a mopping machine, and the like in the existing technology. The control module uses a control handle to perform control, or uses a control manner such as a sweeping robot or a mopping robot. The clear water tank may be mounted on a lever of the control module, or may be mounted on the ground brush module. Main innovation points of this disclosure lie in components such as the ground brush module, the rolling brush assembly, the threaded rod assembly, and the wastewater tank, and a combination thereof. The following further describes component structures, component relationships, working principles, and technical effects thereof in detail.

The control module of the ground cleaning apparatus in this disclosure is the control handle 101 shown in FIG. 1. The clear water tank 103 is mounted on the body of the lever 100. The body 102 of the lever 100 is connected to the ground brush module 200 by using the rotary joint 104. The wastewater tank 500 is connected to the ground brush module 200. The rolling brush assembly 300 and the threaded rod assembly 400 are mounted inside the ground brush module. The ground brush module has a shell covering the rolling brush assembly 300.

The clear water tank 103 is provided with the clear water delivery pipe 105 extending to a side of the threaded rod rotation head 409, to deliver clear water to the threaded rod; or may be provided with a pipe, to directly spray clear water onto the collodion cotton rolling brush 314.

Ground Brush Module 300

According to FIG. 20 and FIG. 21, in the ground brush module 200, the ground brush holder right cover 201 and the ground brush holder left cover 202 are arranged on two sides of the ground brush holder body 203. An inner side of the ground brush holder body 203 is provided with a dirt holding tank 204 in a shape matching a shape of the threaded rod, the dirt holding tank 204 has a semi-surrounding structure, the semi-surrounding structure should be greater than 180 degrees, and a dirt discharging opening 212 is provided on an upper side at an end of the dirt holding tank 204 along a direction in which the threaded rod body 401 transmits wastewater and garbage. Preferably, a width of the dirt discharging opening 212 is less than or equal to a width of the second thread set 403. Preferably, an upper edge of the dirt discharging opening is higher than a height of the thread set, and a lower edge of the dirt discharging opening 212 is higher than a height of a central axis of the threaded rod body 401.

A semi-surrounding sealing angle of the dirt holding tank 204 on an inner side of the ground brush holder body 203 preferably ranges from 270 degrees to 300 degrees, and several reinforcing ribs are arranged on an outer side of the ground brush holder body 203, so as to increase strength and stability of the ground brush holder body. The ground brush holder body 203 is preferably made of an aluminum alloy material. In this way, such a core component as the ground brush holder body may be produced through extrusion forming, so that the product is reliable and durable, and has relatively low costs.

The power module 700 is arranged in an accommodating cavity at an upper portion of the ground brush holder body 203.

An upper portion of the ground brush module 200 is provided with a ground brush flip-over cover locking component, for example, a snap, a stud, or a lock. Preferably, one flip-over cover lock strip 215 is arranged. The flip-over cover lock strip 215 is stuck in the ground brush holder body, and may be moved left and right in the axis direction of the rolling brush by pushing an elastic button on the ground brush holder right cover or the ground brush holder left cover. The rear lock male end 211 on the flip-over cover lock strip 215 may tighten or loosen the flip-over cover rear locking female end 603, to lock or unlock the ground brush flip-over cover 600, and the flip-over cover front lock male end of the ground brush flip-over cover 600 is buckled to the front lock female ends on the ground brush holder left and right covers. A ground brush bottom cover scraper is arranged at the bottom of the ground brush module 200, as shown at the bottom of FIG. 3.

The ground brush holder right cover 201 is provided with a threaded rod rotation head mounting slot 206, a rolling brush lifting handle mounting slot 205, and a flip-over cover front lock female end 208. At least one side in a position on the ground brush holder left and right covers close to the flip-over cover lock strip 215 is provided with a flip-over cover propping elastic component, for example, a flip-over cover propping button 210. A spring is arranged in the propping button.

The ground brush holder left cover 202 is provided with a threaded rod mounting opening 207, and the threaded rod end cover 404 is locked and fixed to the threaded rod mounting opening 207. The ground brush holder left cover 202 is provided with a rolling brush lifting handle mounting slot 205. An inner side wall of the rolling brush lifting handle mounting slot 205 is provided with a pair of elastic electrically-conductive components 209, for example, electrically-conductive pogo pins. The elastic electrically-conductive component is arranged corresponding to a side electrically-conductive component 315 of the rolling brush lifting handle 301, so as to implement an electrical connection. The elastic electrically-conductive component 209, for example, an electrically-conductive pogo pin, may be exactly stuck in a surface groove of the electrically-conductive component 315, which may be beneficial to mounting the rolling brush lifting handle in place, and may enhance conduction stability. The ground brush holder left cover is also provided with a flip-over cover front lock female end.

An inner side of the ground brush flip-over cover 600 has an arc shape, so as to better adapt to the rolling brush. The ground brush flip-over cover 600 is provided with a fixing apparatus, and is fixed to the ground brush holder. For example, the fixing apparatus includes a flip-over cover front lock male end and a flip-over cover rear locking female end, that are separately locked to the ground brush holder.

An anti-collision strip 601 such as a silicone strip is arranged at a front end of the ground brush flip-over cover 600, and an inner barrier strip is arranged on an inner side at the front end of the ground brush flip-over cover. Preferably, the anti-collision strip and the inner barrier strip are integral. The anti-collision strip 601 is a u-shaped snapping-and-mounting structure. An inner side of the anti-collision strip 601 is provided with the inner barrier strip. The inner barrier strip is preferably inclined toward the rolling brush surface, and is in contact with the rolling brush surface. During operation of the cleaning device, if the cleaning device butts against a wall body or furniture by accident, the anti-collision strip can avoid damaging the wall body or furniture. In addition, the inner barrier strip arranged on the inner side of the ground brush flip-over cover front end can prevent some dirt or wastewater that is not transmitted away in time from being thrown to the advancing direction of the ground brush module during rotation of the rolling brush, thereby further improving the cleaning effect.

In an embodiment, the inner side of the ground brush flip-over cover 600 is provided with a pressing roller 605, and the pressing roller 605 is in contact with the rolling brush surface. Preferably, mounting portions at two ends of the pressing roller are provided with springs, so that the squeezing manner between the pressing roller and the rolling brush is elastic.

The wastewater tank 500 is arranged on a rear side of the ground brush module. The dirt discharging opening 212 of the dirt holding tank 204 of the ground brush holder is arranged at an end of a thread set for rotatably transmitting dirt. The dirt discharging opening 212 matches the second thread set 403.

The wastewater tank 500 is provided with a wastewater tank water inlet cover 502. The dirt discharging opening 212 of the ground brush holder body and the water inlet 505 of the wastewater tank correspond to each other. In addition, a dirt discharging opening propping block 213 is arranged in a direction in which an upper side edge of the dirt discharging opening 212 of the ground brush holder body faces the wastewater tank. The dirt discharging opening propping block 213 can prop open the water inlet cover 502 of the wastewater tank. When the wastewater tank 500 is separated from the ground brush module, the water inlet cover 502 of the wastewater tank 500 is automatically closed due to the distortion spring 503. The top of the water inlet cover of the wastewater tank is provided with the distortion spring 503. In an embodiment, a magnet 504 is arranged on a lower side of the water inlet 505 of the wastewater tank 500, and the corresponding water inlet cover of the wastewater tank may be in magnetic attraction with the magnet 504. A clear water tank and a wastewater tank with a larger capacity may be used for replacement as actually required.

The power module 700 may be arranged in the ground brush module, or may be arranged in the lever module. The power module is preferably arranged in the ground brush module, because the product is more stable and has a more stable center of gravity when the weight is placed at the bottom.

Threaded Rod Assembly 400

The threaded rod body 401 of the threaded rod assembly 400 is provided with a thread set, and the thread set is in squeezing contact with the rolling brush surface. Preferably, the thread set is a flexible thread set. For example, a threaded rod is encapsulated into the flexible thread set. One of advantages of flexibility lies in that, the threaded rod cooperates with the dirt holding tank, and when helically transmitting dirt, the threaded rod does not easily get stuck. Preferably, the threaded rod body is provided with a first thread set 402 and a second thread set 403, and a diameter of the second thread set 403 is greater than that of the first thread set 402. Preferably, a thread pitch of the second thread set 403 is smaller than that of the first thread set 402, and the second thread set 403 corresponds to the dirt discharging opening 212 of the dirt holding tank 204.

The technical solution of using different thread pitches of the first thread set and the second thread set is a result of a plurality of physical experiments and tests. Thread sets of different pitches are used to quickly rotate, and an area close to the dirt discharging opening switches from the first thread set to the second thread set. Because the thread pitch of the first thread set is greater than the thread pitch of the second thread set, a pushing amount of the first thread set in each circle of rotation is greater than a pushing amount of the second thread set in each circle of rotation. When the area close to the dirt discharging opening switches to the second thread set, a pressure generated by rotational pushing becomes larger in the area of the second thread set. The pressure becomes larger, to form a larger delivery force and a larger centrifugal force, so that wastewater and garbage can be better transmitted to the water inlet 505 of the wastewater tank through the dirt discharging opening 212 of the dirt holding tank 204.

The technical solution of using different thread diameters of the first thread set and the second thread set is also a result of a plurality of physical experiments and tests. An area close to the dirt discharging opening switches from the first thread set to the second thread set. Because the thread diameter of the second thread set is greater than the thread diameter of the first thread set, to form a better delivery force and a better centrifugal force, wastewater and garbage can be better transmitted to the water inlet 505 of the wastewater tank through the dirt discharging opening 212 of the dirt holding tank 204.

The threaded rod end cover 404 is provided with a threaded rod lifting handle 406, the threaded rod end cover 404 is provided with a sealing ring 405, and the threaded rod end cover 404 is further provided with a fastening apparatus that cooperates with the threaded rod mounting opening 207, such as a snapping slot with a peripheral surface or a thread structure. The threaded rod end cover 404 is provided with a threaded rod bearing 408. The other end of the threaded rod body 401 is provided with a threaded rod rotation head 409. The threaded rod rotation head 409 is provided with a sealing ring 405, and has an end provided with a shockproof plug 410. The threaded rod rotation head 409 is provided with a bearing 408. The threaded rod rotation head 409 is mounted in the threaded rod rotation head mounting slot 206 of the ground brush holder right cover. The thread set of the threaded rod body 401 is in squeezing contact with the rolling brush surface. The threaded rod body may be driven by the rolling brush surface to passively rotate. Alternatively, the threaded rod body may be connected to a transmission mechanism to movably rotate. The thread set of the threaded rod body 401 is in squeezing contact with the rolling brush surface, and the thread set is in squeezing contact with the rolling brush surface and rotates. Therefore, wastewater and dirt on the rolling brush surface may be scraped or extruded, and the scraped or extruded wastewater and dirt are transmitted in the semi-closed dirt holding tank to one end through rotation of the threaded rod. In addition, a real-time rubbing action is maintained when the threaded rod and the rolling brush surface are in a working state, so as to implement a real-time rubbing and self-cleaning function while working. In addition, because a vacuum cleaner is not required, energy consumption is low, and noise is low.

Costs of the threaded rod assembly 400 adopting the passive working manner are lower, and the structural design is more minimalist.

In this disclosure, a gap between a thread edge of the threaded rod assembly 400 and an inner wall of the dirt holding tank 204 is less than 5 mm, preferably less than 1 mm, and more preferably ranges from 0.2 to 0.5 mm. If the gap between the thread edge and the inner wall of the dirt holding tank 204 is excessively large, a poor effect of transmitting dirt by rotation of the threaded rod is caused. If the gap between the thread edge and the inner wall of the dirt holding tank 204 is excessively small, for example, the thread edge is tangent to or in contact with the inner wall of the dirt holding tank 204, a friction force is increased, and transmission is also affected.

At least one side of the threaded rod assembly is provided with a threaded rod bearing, and preferably, both ends of the threaded rod assembly are each provided with a threaded rod bearing, which is more beneficial to stable rotation of the threaded rod assembly.

A rotation action in a squeezing state between the thread set of the threaded rod and the rolling brush surface is a rotational squeezing motion between the thread set of the threaded rod and the rolling brush, to take dirty things, dirt, and wastewater on the rolling brush away and spirally transmit them to the dirt discharging opening. In addition, the thread set of the threaded rod further rubs and squeezes the rolling brush constantly, which is similar to a working principle of a washboard, and achieves a self-cleaning function.

Rolling Brush Assembly 300

The rolling brush assembly 300 includes a rolling brush body 302 and rolling brush lifting handles 301 on two sides. The rolling brush body 302 is driven by using a transmission motor. Preferably, a transmission gear-box motor 303 is arranged in the rolling brush body 302. One end of the transmission gear-box motor 303 is mounted in the transmission motor holder 312, and the other end of the transmission gear-box motor 303 is mounted in the rolling brush bearing pedestal 306. One end of the rolling brush bearing pedestal 306 is sleeved over the transmission gear-box motor 303, and an outer surface of the other end of the rolling brush bearing pedestal is fixedly equipped with a rolling brush bearing 304 through engagement. A first rolling brush shaft connection pipe 317 is arranged inside the rolling brush lifting handle 301. A front end portion of the first rolling brush shaft connection pipe 317 extends into an inner side of the rolling brush bearing pedestal 306. Then, the first rolling brush shaft 305 extends through the first rolling brush shaft connection pipe 317 into the inner side of the rolling brush bearing pedestal 306, and the rolling brush lifting handle is fastened to the rolling brush bearing pedestal through bolting. A through-hole is provided in the first rolling brush shaft 305, so that the motor circuit may pass through and be electrically connected to the electrically-conductive member of the rolling brush lifting handle. A diameter of the first rolling brush shaft 305 is greater than that of the rolling brush sleeve bearing 309.

Usually, a normal use state may be satisfied by controlling a rotational speed of a motor of the rolling brush to 200 to 400 RPM, passive transmission or active transmission may be performed between the threaded rod and the rolling brush, a ratio of the diameter of the threaded rod to that of the rolling brush preferably ranges from 20:100 to 20:20, and a rotational speed of the threaded rod ranges from 367 to 735. The top of the transmission gear-box motor 303 is provided with a rolling brush joint 310. The rolling brush joint 310 matches a mounting groove 316 of the rolling brush joint in the rolling core. The top of the rolling brush joint 310 is also provided with a shockproof plug 410, to prevent vibration and prevent axial motion, thereby improving stability of the product.

A mounting manner of the rolling brush assembly 300 is: placing it into the rolling brush lifting handle mounting slot 205 from top to bottom, and preferably, placing it directly in a vertical direction. The inventor has once put forward a one-side mounting technical solution in earlier disclosure application. Compared with a technical solution in which a rolling brush assembly is first mounted on one side and then a rolling brush assembly is mounted on the other side, an advantage of this disclosure lies in that the force is more uniform and the product is more reliable. Because the threaded rod and the rolling brush surface are in squeezing contact, when the product works, the threaded rod may apply some pressure to the rolling brush surface. However, the original technical solution easily causes damage to the rolling brush assembly on one side.

A side surface of at least one rolling brush lifting handle of the rolling brush assembly 300 is provided with an electrically-conductive component 315, and preferably, a surface of the electrically-conductive component is provided with a groove matching the elastic electrically-conductive component 209 in the rolling brush lifting handle mounting slot.

A side wall of at least one rolling brush lifting handle mounting slot is provided with an electrically-conductive component 209. Preferably, the electrically-conductive component is a retractable elastic electrically-conductive component, for example, an electrically-conductive pogo pin. A side surface of the rolling brush lifting handle is correspondingly provided with an electrically-conductive component 315. Preferably, the electrically-conductive component 315 is provided with a groove to match the retractable elastic electrically-conductive component. Such an arrangement may prompt a user that the rolling brush lifting handle has been snapped and mounted in place, thereby improving user experience.

An end surface of the rolling brush lifting handle is provided with a flexible shockproof plug 410, for example, a silicone pad. In this way, during mounting, the rolling brush lifting handle has a specific damping effect, thereby avoiding direct collisional mounting. In addition, the arrangement of shockproof plugs at two ends helps to reduce noise during operation of the cleaning device, reduce vibration and axial motion, and improve stability and service life of the product.

Preferably, the ground cleaning apparatus includes a rolling brush assembly, a shell covering the rolling brush assembly, a transmission motor, a power module, and a control module, where the control module can control the power module to connect with the transmission motor, and the transmission motor drives the rolling brush assembly to rotate. The ground cleaning apparatus further includes a clear water tank, a wastewater tank, a ground brush module, and a threaded rod assembly. The ground brush module 200 includes a ground brush holder body 203 and a wastewater tank 500, a ground brush holder right cover 201 and a ground brush holder left cover 202 are arranged on two sides of the ground brush holder body 203, and the rolling brush assembly is mounted in the ground brush module through the ground brush holder right cover 201 and the ground brush holder left cover 202. An inner side of the ground brush holder body 203 is provided with a dirt holding tank 204 in a shape matching a shape of the threaded rod assembly 400, the dirt holding tank 204 has a semi-surrounding structure, the semi-surrounding structure of the dirt holding tank 204 is greater than 180 degrees, and a dirt discharging opening 212 is provided at an end of the dirt holding tank 204 along a direction in which the threaded rod assembly 400 transmits wastewater and garbage. The threaded rod assembly 400 is mounted in the dirt holding tank 204 of the ground brush module through the ground brush holder right cover 201 and the ground brush holder left cover 202. The threaded rod assembly 400 is provided with a thread set, a gap between a thread edge of the thread set and an inner wall of the dirt holding tank 204 is less than 5 mm, and the clear water tank 103 delivers clear water to an end of the threaded rod assembly 400 away from the dirt discharging opening by using a clear water delivery pipe 105. A part of the threaded rod assembly 400 is in squeezing contact with a rolling brush surface of the rolling brush assembly 300 by using the semi-surrounding structure of the dirt holding tank 204, and relative rotation between the threaded rod assembly 400 and the rolling brush assembly 300 enables wastewater and garbage attracted by the rolling brush to be transmitted to the dirt discharging opening 212 by using the dirt holding tank 204. The dirt discharging opening 212 of the dirt holding tank 204 is arranged corresponding to a wastewater tank water inlet 505 of the wastewater tank 500.

A wastewater and dirt transmission mechanism formed by cooperation between the dirt holding tank 204 in the semi-surrounding structure and the threaded rod assembly 400 significantly differs from the existing technology in terms of a transmission principle and a transmission effect, has relatively low costs, and saves a vacuum cleaner module. The threaded rod assembly and the rolling brush surface achieve real-time rubbing and self-cleaning, low energy consumption, and low noise. Such a core component as the ground brush holder body 203 is preferably formed integrally by extruding an aluminum alloy, so that the product is reliable and durable.

Preferably, a threaded rod body of the threaded rod assembly 400 is provided with a first thread set 402 and a second thread set 403, a thread diameter of the second thread set 403 is greater than a thread diameter of the first thread set 402, a thread pitch of the second thread set 403 is less than a thread pitch of the first thread set 402, and the second thread set is arranged corresponding to the dirt discharging opening 212. The switching between thread sets of different thread pitches and different diameters can increase a transmission force and a centrifugal force generated by spiraling in an area close to the dirt discharging opening 212, increase a transmission pressure, and is more beneficial for transmission of wastewater and dirt to the wastewater tank.

Preferably, a gap between the thread edge of the threaded rod assembly and the inner wall of the dirt holding tank 204 is less than 1 mm, or ranges from 0.2 to 0.5 mm. If the gap is excessively large, the transmission effect is poor. If the gap is excessively small, the friction force is relatively large, which is not beneficial to rotation of the threaded rod. Especially in a passive rotation mode, the threaded rod often gets stuck and no longer rotates.

Preferably, a lower edge of the dirt discharging opening 212 is higher than a horizontal position of a central axis of the threaded rod, and an upper edge of the dirt discharging opening is higher than an upper thread edge of the threaded rod assembly; and a width of the dirt discharging opening is less than or equal to a width of the second thread set. The lower edge of the dirt discharging opening affects the actual capacity of the wastewater tank. If the lower edge of the dirt discharging opening is set to be relatively high, the effective capacity of the wastewater tank is expanded.

Preferably, the dirt discharging opening 212 of the dirt holding tank 204 is provided with a propping block 213, and the propping block 213 props a wastewater tank water inlet cover 502 open. In this way, the water inlet cover 502 of the wastewater tank can be kept in a normally open state. Otherwise, blocking of dirt easily occurs at the water inlet cover 502 of the wastewater tank, affecting normal use of the product.

Preferably, a ratio of a diameter of the rolling brush assembly to a diameter of the threaded rod assembly ranges from 4:1 to 1:1. Such a diameter ratio is more beneficial to the transmission by using the threaded rod.

Preferably, the ground brush holder right cover 201 and the ground brush holder left cover 202 are each provided with a rolling brush lifting handle mounting slot 205, an inner wall of at least one rolling brush lifting handle mounting slot 205 is provided with an elastic electrically-conductive component 209, the rolling brush assembly 300 is mounted from top to bottom, an electrically-conductive component 315 is mounted on a side surface of at least one rolling brush lifting handle, the electrically-conductive component 315 matches the elastic electrically-conductive component 209, and two sides of the rolling brush assembly are provided with bearings. This design facilitates disassembly, extraction, and mounting of the rolling brush, and stable electrical conduction.

Preferably, the ground brush holder right cover 201 and the ground brush holder left cover 202 are respectively provided with a threaded rod rotation head mounting slot 206 and a threaded rod mounting opening 207, a threaded rod rotation head at an end of the threaded rod assembly matches the threaded rod rotation head mounting slot 206, a threaded rod end cover 404 is fixedly connected to the threaded rod mounting opening 207, and a bearing 408 is arranged on at least one side of the threaded rod end cover of the threaded rod assembly. Such a mounting structure facilitates disassembly and stable rotation of the threaded rod assembly.

Preferably, the clear water delivery pipe 105 directly sprays clear water onto the rolling brush surface.

Preferably, a shell of the ground brush module is provided with a ground brush flip-over cover 600, the ground brush flip-over cover 600 is provided with a flip-over cover front lock male end 602 and a flip-over cover rear lock female end 603, the flip-over cover front lock male end 602 is adapted to a flip-over cover front lock female end 208, and the flip-over cover rear lock female end 603 is adapted to a flip-over cover lock strip 215. This design facilitates disassembly and replacement of the rolling brush assembly.

A threaded rod assembly for a ground cleaning apparatus includes a threaded rod body 401 and a threaded rod end cover. The threaded rod body 401 is provided with a first thread set 402 and a second thread set 403, a thread diameter of the second thread set 403 is greater than a thread diameter of the first thread set 402, and a thread pitch of the second thread set 403 is less than a thread pitch of the first thread set 402. A length of the first thread set 402 is greater than a length of the second thread set 403. One end of the threaded rod body 401 is provided with a threaded rod end cover 404. The threaded rod end cover is provided with a sealing ring 405 and a locking mechanism 407. The locking mechanism 407 can lock with the ground brush module. The threaded rod end cover 404 is provided with a bearing 408. The threaded rod end cover 404 is provided with a threaded rod lifting handle 406, and the threaded rod lifting handle 406 is a rotatable and retractable structure. One end of the threaded rod body is provided with a threaded rod rotation head, the threaded rod rotation head 409 is sleeved over an end of the threaded rod body 401, a bearing 408 is arranged in the threaded rod rotation head 409, and the threaded rod rotation head is provided with a sealing ring. A shockproof plug 410 is arranged on an end surface of the threaded rod rotation head 409. The second thread set 403 is arranged corresponding to the dirt discharging opening 212 of the ground brush module. One end of the threaded rod body 401 is provided with a threaded rod rotation head 409. A bearing is arranged in the threaded rod rotation head 409. The threaded rod rotation head is provided with a sealing component. The threaded rod body is sequentially provided with a first thread set and a second thread set. A threaded rod end cover 404 is arranged at one end close to the second thread set. A bearing is arranged in the threaded rod end cover 404. The threaded rod end cover 404 is provided with a locking mechanism 407 and a sealing component. In this disclosure, the sealing ring may also be pressed and sealed by using an end face.

A rolling brush assembly for a ground cleaning apparatus includes a rolling brush body 302. The rolling brush body 302 includes a rolling core and a rolling brush layer, the rolling brush layer is sleeved over the rolling core, rolling brush lifting handles 301 are arranged on two sides of the rolling brush assembly, and an electrically-conductive component 315 is mounted on at least one rolling brush lifting handle 301. A rolling brush lifting handle 301 on one side of the rolling brush assembly is in a rotatable connection to a rolling brush end cover 307 of the rolling core 313. A rolling brush lifting handle 301, on the other side of the rolling brush assembly, on which an electrically-conductive component 315 is mounted is connected to a transmission gear-box motor 303 by using a first rolling brush shaft 305, a rolling brush bearing pedestal 306, and a rolling brush bearing 304. A through-hole is provided in the first rolling brush shaft 305, and a circuit of the transmission gear-box motor 303 is connected to the electrically-conductive component 315 of the rolling brush lifting handle 301 through the through-hole provided in the first rolling brush shaft 305. The transmission gear-box motor 303 is arranged in the rolling core, and a rolling brush joint 310 is arranged at an end of a motor output shaft 311 of the transmission gear-box motor 303. A mounting groove 316 matching the rolling brush joint 310 is arranged inside the rolling core 313, and the rolling core 313 can be driven to rotate by the rolling brush joint 310 arranged at the end of the motor output shaft 311. A rolling brush lifting handle 301 on one side of the rolling brush assembly is connected to the rolling brush end cover 307 of the rolling core 313 by using a rolling brush sleeve bearing 309 and a second rolling brush shaft 308. One end of the transmission gear-box motor 303 is mounted in the transmission motor holder 312, and the other end of the transmission gear-box motor 303 is partially sheathed in the rolling brush bearing pedestal 306. An outer surface of the other end of the rolling brush bearing pedestal 306 is equipped with a rolling brush bearing 304. The other end of the rolling brush bearing pedestal 306 is provided with a through-hole. A first rolling brush shaft connection pipe is arranged inside the rolling brush lifting handle. A front end portion of the first rolling brush shaft connection pipe 317 extends into the through-hole of the rolling brush bearing pedestal 306. The first rolling brush shaft 305 extends through the first rolling brush shaft connection pipe 317 into the inside of the rolling brush bearing pedestal 306, and the rolling brush lifting handle 301 is fastened to the rolling brush bearing pedestal 306. A shockproof plug 410 is arranged at the top of the rolling brush joint 310. A side surface of the rolling brush lifting handle 301 is provided with an electrically-conductive component 315, a surface of the electrically-conductive component 315 is provided with a groove, and the groove can match an elastic electrically-conductive component 209 of a ground brush module. End surfaces of the two rolling brush lifting handles 301 are each provided with a shockproof plug 410. The rolling brush layer is a collodion cotton rolling brush 314.

After the rolling brush assembly is used for a period of time, the rolling brush assembly may be independently replaced, and a transmission gear-box motor 303 may be directly taken out from the rolling brush assembly 300, which is very convenient and improves user experience.

In another embodiment of the present disclosure, the control module and the clear water tank are both integrated into the ground brush module. The ground brush module is further provided with an automatic walking mechanism like an automatic sweeping robot and a control module. Therefore, the ground cleaning apparatus is represented as a mop robot that can automatically walk.

In another embodiment, the rolling brush assembly 300, the threaded rod assembly 400, and the wastewater tank are sequentially arranged one after another in a horizontal direction.

In the existing technology, a threaded rod assembly is not arranged. In addition, in the existing technology, a motor of a vacuum cleaner that usually uses an air negative pressure is usually designed on a handle bar, and a wastewater tank is also usually designed on the handle bar. In this way, the entire product is relatively bloated and heavy, has a large volume, an unstable center of gravity, and high costs, and does not meet ergonomics. However, in the technical solution of this disclosure, the three are closely matched, and design space is greatly saved. In addition, through the skillful structural design of this disclosure, a specific negative pressure is also formed, energy conversion efficiency is high, design space of the product is greatly increased, and the center of gravity of the product is more stable, and the foregoing technical problems are overcome. The entire product has a simple design structure, a simple circuit deployment, and low costs, and better meets ergonomics.

Preferably, the rolling brush assembly 300, the threaded rod assembly 400, the clear water tank, and the wastewater tank are sequentially arranged one after another in a horizontal direction, and the horizontal direction may be set as an up-down direction or a left-right direction. Further preferably, the clear water tank and the wastewater tank may be a two-in-one water tank.

Embodiment B

A ground cleaning apparatus provided in this embodiment includes a rolling brush assembly 300, a ground brush module 200, a clear water tank 103, a wastewater tank, a control module, and a power module. The rolling brush assembly is mounted on the ground brush module, the control module can control running of the cleaning apparatus, and the power module can provide electric energy for the cleaning apparatus.

The rolling brush assembly 300 includes a rolling core 313 and a collodion cotton rolling brush 314. The collodion cotton rolling brush 314 is sleeved over the rolling core 313. The rolling brush assembly is detachably mounted on the ground brush module 200. A rolling brush detection structure is arranged on the ground brush module 200. The rolling brush detection structure is arranged in contact with the collodion cotton rolling brush 314 on the rolling brush assembly 300. The rolling brush detection structure can detect whether the collodion cotton rolling brush 314 on the rolling brush assembly 300 has water. It is well-known that after being placed in a dry condition for a long time, the collodion cotton becomes hard, and only after water is added to the collodion cotton, the collodion cotton becomes soft. Therefore, the rolling brush detection structure is arranged, to first detect whether there is water on the collodion cotton rolling brush before the cleaning apparatus starts to clean. If there is no water on the collodion cotton rolling brush, the collodion cotton rolling brush is replenished with water in advance and then starts to clean a ground or an object surface, so as to avoid a case that the hard collodion cotton rolling brush cannot clean.

Preferably, as shown in FIG. 25 to FIG. 26, the rolling brush detection structure is an electrically-conductive contact 320. At least one group of electrically-conductive contacts 320 is arranged on the ground brush module 200. Each group of electrically-conductive contacts includes two electrically-conductive contact heads, one end of each of the two electrically-conductive contact heads is connected to a power supply, and the two electrically-conductive contact heads of each group of electrically-conductive contacts are both in contact with a collodion cotton rolling brush. When the circuit is switched on, if there is no water on the collodion cotton rolling brush, the two electrically-conductive contact heads cannot form a closed circuit, and detected resistance is very large; or if there is water on the collodion cotton rolling brush, the two electrically-conductive contact heads form a closed circuit, and detected resistance becomes smaller.

Working principle: The control module sets an upper limit value. When the cleaning apparatus is used, the control module controls the rolling brush detection structure to detect a resistance value. If the resistance value is greater than the upper limit value, it indicates that there is no water on the collodion cotton rolling brush. In this case, the collodion cotton rolling brush cannot clean the ground; and the control module controls the clear water tank to deliver water to the collodion cotton rolling brush and/or deliver water to a dirt holding tank in which a threaded rod assembly is mounted. If the resistance value detected by the rolling brush detection structure is less than the lower limit value, it indicates that water replenishment of the collodion cotton rolling brush is completed or there is water on the collodion cotton rolling brush, that is, the collodion cotton rolling brush is a soft rolling brush and may be used for cleaning the ground. In this case, the control module controls the clear water tank to stop delivering water to the collodion cotton rolling brush or the cleaning apparatus starts a cleaning mode.

Certainly, the rolling brush detection structure may alternatively be a sensor. The sensor is arranged in contact with the collodion cotton rolling brush of the rolling brush assembly, and the sensor can detect whether there is water or no water on the collodion cotton rolling brush. The sensor includes a water immersion sensor, another detection sensor, or the like.

Preferably, the rolling brush assembly 300 and the ground brush module 200 are the same as those in Embodiment A.

Preferably, the electrically-conductive contact 320 is fixedly mounted on the ground brush holder left cover 202 of the ground brush module.

Embodiment C

According to a ground cleaning apparatus provided in this embodiment, a clear water tank can not only deliver water to a rolling brush assembly, but also deliver water to a dirt holding tank in which a threaded rod assembly is mounted.

The cleaning apparatus includes a rolling brush assembly 300, a threaded rod assembly 400, a ground brush module 200, a clear water tank 103, a wastewater tank, a control module, and a power module. A dirt holding tank is provided on the ground brush module. The threaded rod assembly 400 is mounted rotatably in the dirt holding tank 204, the threaded rod assembly 400 is attached tightly to or arranged close to the inside of the dirt holding tank 204, the dirt holding tank 204 is provided with an elongated dirt receiving opening 219 facing the rolling brush assembly, a dirt discharging opening 212 is provided at an end of delivering water and dirt along the dirt holding tank 204, the dirt discharging opening is in communication with the wastewater tank 500, the threaded rod assembly is arranged in squeezing contact with the rolling brush assembly, the threaded rod assembly is coverable of squeezing the water and the dirt on the rolling brush assembly, cooperation between the dirt holding tank and the threaded rod assembly is coverable of transmitting the water and the dirt to the dirt discharging opening 212, that is, a structure in which the dirt holding tank and the threaded rod assembly are arranged in cooperation can enable the threaded rod assembly to transmit water and dirt to the dirt discharging opening, and the dirt discharging opening is connected to the wastewater tank.

The cleaning apparatus is provided with two water pumps, which are a first water pump 181 and a second water pump 182 respectively. The first water pump can deliver water to the rolling brush assembly, and the second water pump can deliver water to the dirt holding tank in which the threaded rod assembly is mounted.

As shown in FIG. 27 to FIG. 29, in an example, a plurality of first water replenishment holes 180 are provided on the ground brush module. The first water replenishment holes 180 face the rolling brush assembly. The first water replenishment holes 180 are located above the rolling brush assembly. The first water replenishment holes 180 are connected to the clear water tank 103 by using a clear water delivery pipe. The first water pump 181 is mounted on the clear water delivery pipe. The first water pump 181 can suck clear water in the clear water tank 103 and replenish the collodion cotton rolling brush of the rolling brush assembly with water through the first water replenishment holes 180.

In an example, similar to Embodiment A, the ground brush module includes a ground brush holder body, a ground brush holder left cover, and a ground brush holder right cover, and additionally includes an upper cover 221. The upper cover detachably covers the rolling brush assembly from above. The upper cover includes a first upper cover 222 and a second upper cover 223. The second upper cover is arranged on a side of the first upper cover close to the rolling brush assembly. A groove 224 is provided on the second upper cover. A water delivery strip 225 is hermetically arranged on the groove 224. A clip-shaped waterway cavity is formed in the water delivery strip and the groove. A clear water delivery pipe communicates with the clip-shaped waterway cavity. A plurality of first water replenishment holes are provided at the bottom of the groove. The water replenishment holes face the collodion cotton rolling brush, so that water is evenly delivered to the surface of the collodion cotton rolling brush. Preferably, the water delivery strip is detachably mounted in the groove.

Preferably, the first water replenishment holes 180 are located on a side of the rolling brush assembly close to the threaded rod assembly.

Preferably, the plurality of first water replenishment holes are uniformly arranged at equal intervals along the length direction of the rolling brush assembly.

In an example, the second upper cover is detachably and fixedly mounted on the ground brush holder body, and the first upper cover is snapped and mounted on the ground brush holder body and the second upper cover. In an example, the dirt holding tank is arranged on the ground brush holder body of the ground brush module.

In a preferred embodiment, the clear water tank 103 can further provide clear water to the dirt holding tank 204 in which the threaded rod assembly 400 is mounted.

As shown in FIG. 29 to FIG. 30, in an example, a second water replenishment hole 226 is provided on the dirt holding tank. The second water replenishment hole 226 is connected to the clear water tank 103 by using the clear water delivery pipe. A second water pump 182 is mounted on the clear water delivery pipe. The second water pump 182 can deliver water in the clear water tank to the dirt holding tank by using the clear water delivery pipe and the second water replenishment hole.

Preferably, the second water replenishment hole is located at an end of the dirt holding tank away from the dirt discharging opening 212.

Preferably, the threaded rod assembly 300 is similar to that of Embodiment A.

Working principle: When the cleaning apparatus is started, the control module first controls the first water pump to deliver water to the rolling brush assembly for a particular time, so that the collodion cotton rolling brush sucks water and becomes soft, then the control module controls the first water pump to stop supplying water to the rolling brush assembly, and after the cleaning apparatus starts to clean the ground or the object surface, the control module controls the second water pump to supply water to the dirt holding tank, the threaded rod assembly squeezes the wastewater and the dirt on the rolling brush assembly and rotates with the rolling brush assembly, and the wastewater and the dirt are delivered to one end of the dirt discharging opening of the dirt holding tank with rotation of the threaded rod assembly, and then are thrown into the wastewater tank; and the clear water delivered in the second water replenishment hole is also delivered to the dirt discharging opening, and in a delivery process, the clear water is in contact with the collodion cotton rolling brush of the rolling brush assembly, and can play a role in cleaning the collodion cotton rolling brush. In addition, in a process of delivering the clear water from the second water replenishment hole to one end of the dirt discharging opening, the clear water further plays a role in cleaning the dirt holding tank, so that the wastewater and the dirt in the dirt holding tank are cleaned and delivered to the one end of the dirt discharging opening, and then are thrown into the wastewater tank.

Certainly, it may also be detected, with reference to the rolling brush detection structure of Embodiment B, whether there is water on the collodion cotton rolling brush. It there is no water, the control module controls the first water pump to deliver water to the rolling brush assembly for a particular time. When the rolling brush detection structure detects that there is water on the collodion cotton rolling brush, the control module controls the first water pump to stop supplying water to the rolling brush assembly, and after the cleaning apparatus starts to clean the ground or the object surface, the control module controls the second water pump to supply water to the dirt holding tank, thereby playing a role in cleaning both the rolling brush and the dirt holding tank. The rolling brush is cleaned to better clean the ground, thereby avoiding stains and prints on the ground after cleaning.

Embodiment D

A wastewater tank provided in this embodiment is similar to that in Embodiment A. Certainly, the wastewater tank may be a square wastewater tank or a cylindrical wastewater tank.

As shown in FIG. 23 to FIG. 24, the wastewater tank 500 is provided with an air hole 804, the air hole 804 is in communication with a wastewater cavity in the wastewater tank 500, and a wastewater tank water inlet 505 and the air hole 804 are both arranged at an upper portion of the wastewater tank 500.

Preferably, an inner wall of the wastewater tank is provided with a blocking slot 805, and a side wall of the blocking slot 805 corresponds to the air hole 804. In an example, the air hole 804 corresponds to the blocking slot 805, and an opening direction of the blocking slot 805 is arranged perpendicular to the air hole 804. An inner wall of the wastewater tank is provided with a blocking slot, which functions to block the air hole and the wastewater and dirt, so as to avoid a case that the air hole is sealed by the wastewater and dirt surging in the wastewater tank or the wastewater and dirt thrown into the wastewater tank from the wastewater tank water inlet, and consequently gas in the wastewater tank cannot be evacuated, air pressure in the wastewater tank cannot be released, or the wastewater and dirt overflow from the air hole.

Further preferably, water-blocking cotton 806 is accommodated in the blocking slot 805. Disposing the water-blocking cotton in the blocking slot has a better surging preventing effect, can prevent dirt from overflowing from the air hole together, and can also prevent external foreign bodies from falling into the wastewater tank from the air hole.

Embodiment E

Refer to FIG. 31 to FIG. 59. As shown in FIG. 31 to FIG. 59, a two-in-one water tank provided in this embodiment is mainly applied to a cleaning apparatus. A wastewater cavity of the water tank is used to collect wastewater and dirt cleaned by a cleaning device, and a clear water cavity of the water tank can provide clear water to a rolling brush assembly, so as to better clean a ground or an object surface. The water tank 7 includes a housing 70, a wastewater cover assembly 8, and a clear water cover assembly 9. As shown in FIG. 31 to FIG. 48, the water tank is horizontally arranged along a length direction, and a wastewater opening of the wastewater cover assembly 8 is connected to a dirt discharging opening of a cleaning device. The housing 70 includes a partition board 701, a first accommodating cavity 702, and a second accommodating cavity 703. The partition board 701 can divide the inside of the housing into the first accommodating cavity 702 and the second accommodating cavity 703. The first accommodating cavity 702 does not communicate with the second accommodating cavity 703. The first accommodating cavity 702 can accommodate wastewater and dirt, and the second accommodating cavity 703 can accommodate clear water. That is, the first accommodating cavity 702 is a wastewater cavity, and the second accommodating cavity 703 is a clear water cavity. The clear water cover assembly is connected to the second accommodating cavity 703, and the clear water cover assembly 9 is provided with a delivery hole 921. The wastewater cover assembly 8 is connected to the first accommodating cavity 702. An air hole 804 is provided on the wastewater cover assembly 8, the air hole 804 is in communication with the first accommodating cavity 702, and both the wastewater opening and the air hole 804 are arranged at an upper portion of the wastewater cover assembly 8. Preferably, the air hole 804 of the wastewater cover assembly 8 is covered with a waterproof breathable film, so as to stop wastewater and dirt from overflowing from the air hole.

Preferably, one end of the partition board 701 close to the wastewater cover assembly 8 is arranged at an upper portion of an inner wall of the housing 70, one end of the partition board 701 close to the clear water cover assembly 9 is arranged at a lower portion of the inner wall of the housing 70, and the partition board 701 extends from an upper portion of the end close to the wastewater cover assembly 8 to a lower portion of the end close to the clear water cover assembly.

The ground cleaning machine cleaning device includes a cleaning module 1, a ground brush module, a motor assembly, a control module, and a power module. As shown in FIG. 48 to FIG. 59, the cleaning module 1 and the water tank 7 are both mounted on the ground brush module 200, and the water tank 7 is provided with a first accommodating cavity for storing wastewater and dirt and a second accommodating cavity for providing clear water for the cleaning module.

The cleaning module 1 includes a rolling brush assembly 300, a threaded rod assembly 400, and a dirt holding tank 204. The threaded rod assembly 400 is mounted rotatably in the dirt holding tank 204, the threaded rod assembly 400 is attached tightly to or arranged close to an inner cavity of the dirt holding tank 204, the dirt holding tank 204 is provided with an elongated dirt receiving opening facing the rolling brush assembly, a dirt discharging opening is provided at an end of delivering water and dirt along the dirt holding tank 204, the dirt discharging opening is in communication with a first accommodating cavity, the threaded rod assembly is attached tightly to the rolling brush assembly, the threaded rod assembly is coverable of squeezing the water and the dirt on the rolling brush assembly, cooperation between the dirt holding tank and the threaded rod assembly is coverable of transmitting the water and the dirt to the dirt discharging opening, that is, a structure in which the dirt holding tank and the threaded rod assembly are arranged in cooperation can enable the threaded rod assembly to transmit water and dirt to the dirt discharging opening, and the dirt discharging opening is connected to the first accommodating cavity.

The drive motor can drive the rolling brush assembly in the cleaning module to rotate, the control module can control the cleaning device to run, and the power module can provide electric energy for the cleaning device.

Preferably, a distance between an axial center of the threaded rod assembly and an axial center of the rolling brush assembly is less than a sum of a radius of the threaded rod assembly and a radius of the rolling brush assembly.

Preferably, the threaded rod assembly 400 is attached tightly to a side of the rolling brush assembly 300 close to the water tank 7. The threaded rod assembly 400 is mounted in the dirt holding tank 204 rotatably. The dirt holding tank 204 is fixedly provided on the ground brush module 200.

An inner cavity of the dirt holding tank 204 is attached tightly to or arranged close to the threaded rod assembly 400. A dirt receiving opening 131 is provided in the dirt holding tank 204. A dirt discharging opening 212 is provided at one end of delivering water and dirt along the dirt holding tank and the threaded rod assembly. The dirt receiving opening 131 faces the rolling brush assembly 300. Wastewater and dirt on the rolling brush assembly 300 can be squeezed by the threaded rod assembly 400 and collected in the dirt holding tank 204 through the dirt receiving opening 131. The dirt discharging opening 212 is connected to a wastewater opening 801 of the wastewater cover assembly 8. The threaded rod assembly 400 can deliver the wastewater and dirt to the dirt discharging opening 212 and throw the wastewater and dirt into the first accommodating cavity 702 through the dirt discharging opening 212 and the wastewater opening 801 of the wastewater cover assembly 8.

The cleaning device further includes the water tank according to the foregoing technical solution.

The ground brush module 200 is provided with a clear water delivery pipe 105. When the water tank 7 is mounted on the ground brush module 200, the clear water delivery pipe 105 can extend into the delivery hole 921 of the clear water cover assembly 9 and push the sealing block 9122, so that a delivery passage of the clear water cover assembly 9 is in communication with the clear water delivery pipe 105. The clear water delivery pipe 105 can deliver the clear water in the second accommodating cavity to a rolling brush surface of the rolling brush assembly. Preferably, the ground brush module 200 is further provided with a lever 64.

A first cover body 61 is arranged on one side of the ground brush module 200, and a second cover body 62 is arranged on the other side of the ground brush module 200, as shown in FIG. 50. A motor assembly 63 is fixedly mounted on the second cover body 62, an accommodating slot 110 is arranged at one end of the rolling brush assembly 200, and the one end of the rolling brush assembly 200 is sleeved over the motor assembly 63 by using the accommodating slot 110.

As shown in FIG. 53 to FIG. 56, the rolling brush assembly 200 includes a rolling brush body 111 and a mounting handle 112. The mounting handle 112 is connected rotatably to one end of the rolling brush body 111 away from the motor assembly 63. The mounting handle 112 is connected rotatably to one end of the rolling brush body 111 by using a connection shaft 113 and a rolling brush bearing 114. The mounting handle 112 extends outward along a direction perpendicular to an axis of the rolling brush body 111. The mounting handle 112 is mounted on the first cover body 61 through magnetic attraction. Specifically, the mounting handle 112 is provided with a magnet 118, the first cover body 61 is provided with a magnetic material, and the magnet is attracted to the magnetic material. The mounting handle 112 is provided with a rib or a disassembly groove. When the rolling brush body is disassembled, a hand grasps the rib or the disassembly groove, to overcome a magnetic force, and takes out the rolling brush body. Certainly, alternatively, a magnetic material may be arranged on the mounting handle 112, and a magnet is arranged on the first cover body 61, as long as the rolling brush assembly 200 can be mounted on the ground brush module 200 through magnetic attraction.

As shown in FIG. 53 to FIG. 55, the motor assembly 63 includes a drive motor 631, a gear-box, a rolling brush joint 633, and a motor housing 634, and the gear-box is a planet gear-box. The drive motor 631 is fixedly mounted on the second cover body, the control system can control the motor assembly 63 to be electrically connected to the power module, and an output end of the drive motor is fixedly connected to the rolling brush joint by using the gear-box. The rolling brush joint is provided with a convex strip 635 in a radial direction, an angle between a length direction of the convex strip 635 and a length direction of the rolling brush assembly is less than 90 degrees, and along a direction from an end of the convex strip 635 close to the drive motor 631 to an end of the convex strip 635 away from the drive motor 631, the convex strip 635 is inclined toward a rotation direction of the rolling brush assembly 200 during advancing.

A mounting groove 115 matching the rolling brush joint is provided in the accommodating slot 110. During use of the cleaning device, the rolling brush assembly 200 rotates forward. Because an inclined direction of a convex strip on the rolling brush joint is consistent with a rotation direction of the rolling brush assembly during advancing, a force toward the motor assembly is applied to the rolling brush body during rotation, so that the rolling brush body is more tightly sleeved over the motor assembly during rotation. Therefore, the rolling brush body may be mounted on the device body merely through magnetic attraction, and the rolling brush body is not loosened from the device body or the motor assembly.

The rolling brush body 111 includes a rolling shaft 116 and a collodion cotton rolling brush 314 arranged on the rolling shaft, and the flexible cleaning layer is a collodion cotton layer or a fluffy cotton layer.

As shown in FIG. 50 to FIG. 52, the threaded rod assembly 400 includes a thread set, a threaded rod body 401, and a threaded rod end cover 404. The threaded rod end cover 404 is provided with a threaded rod lifting handle 406, configured to mount the threaded rod assembly in a dirt holding tank or remove the threaded rod assembly from a dirt holding tank. A sealing ring is arranged on the threaded rod end cover 404. When the threaded rod assembly 400 is mounted in the dirt holding tank, the threaded rod end cover 404 is mounted hermetically in a threaded rod mounting opening 207 of the dirt holding tank by using the sealing ring, to prevent wastewater and dirt in the dirt holding tank from being leaked from the threaded rod mounting opening.

The threaded rod body of the threaded rod assembly 400 is provided with a thread set, and the thread set is in squeezing contact with the surface of the rolling brush assembly. Preferably, the thread set is a flexible thread set. For example, a threaded rod is encapsulated into the flexible thread set. One of advantages of flexibility lies in that, the threaded rod assembly cooperates with the dirt holding tank, and when helically transmitting dirt, the threaded rod assembly does not easily get stuck. Preferably, the threaded rod body is provided with a first thread set 402 and a second thread set 403, and a diameter of the second thread set 403 is greater than that of the first thread set 402. Preferably, a thread pitch of the second thread set 403 is smaller than that of the first thread set 402, and the second thread set 403 corresponds to the dirt discharging opening 212.

When the threaded rod assembly 400 rotates, the first thread set 402 can deliver water and dirt from one end of the threaded rod assembly 400 to the other end. Water and dirt switch from the first thread set to the second thread set. Because the thread diameter of the second thread set is greater than the thread diameter of the first thread set, to form a better delivery force and a better centrifugal force, wastewater and dirt can be better thrown into the first accommodating cavity through the dirt discharging opening 212 and the wastewater opening 801 of the wastewater cover assembly.

Preferably, the housing 70 of the water tank has a cylindrical structure, and the wastewater cover assembly 8 is connected to the first accommodating cavity 702 of the housing by using a circular port; and the clear water cover assembly is connected to the second accommodating cavity 703 of the housing by using a circular port. Further preferably, the wastewater cover assembly 8 is hermetically connected to the housing 70 by using a circular sealing ring; and the clear water cover assembly is hermetically connected to the housing 70 by using a circular sealing ring.

Preferably, as shown in FIG. 47, the partition board is arranged in a cambered structure or a beveled structure. The partition board includes a first partition portion 707, a second partition portion 708, and a third partition portion 709. Further preferably, the bottom of the first partition portion 707 is not higher than the bottom of the wastewater opening of the wastewater cover assembly 8. Further preferably, the partition board makes a cambered transition from the first partition portion 707 to the second partition portion 708, and makes a cambered transition from the second partition portion 708 to the third partition portion 709; and the first partition portion 707 and/or the third partition portion 709 is disposed perpendicular to an axis direction of the housing, and the second partition portion 708 and the axis direction of the housing are consistent or form an angle less than 90 degrees.

Preferably, a ratio of a distance between one end of the partition board 701 close to the wastewater cover assembly 8 and a port of the housing 70 close to the wastewater cover assembly 8 to a length of the housing ranges from ⅕ to ⅓; and a ratio of a distance between one end of the partition board 701 close to the clear water cover assembly and a port of the housing 70 close to the clear water cover assembly to a length of the housing ranges from ⅕ to ⅓.

Preferably, the partition board 701 is integrally formed and connected to the housing 70.

Certainly, in a sub-preferred embodiment, the partition board may alternatively be vertically arranged. Specifically, the water tank includes a housing 70, a wastewater cover assembly 8, and a clear water cover assembly 9, where the water tank is horizontally arranged along a length direction, and a wastewater opening of the wastewater cover assembly 8 is connected to a dirt discharging opening of a cleaning device. The housing 70 includes a partition board 701, a first accommodating cavity 702, and a second accommodating cavity 703, the partition board 701 is perpendicular to an axis direction of the housing, the partition board 701 can divide the inside of the housing into the first accommodating cavity 702 and the second accommodating cavity 703, the first accommodating cavity 702 can accommodate wastewater and dirt, and the second accommodating cavity 703 can accommodate clear water. The clear water cover assembly 9 is connected to the second accommodating cavity 703, and the clear water cover assembly 9 is provided with a delivery hole 921. The wastewater cover assembly 8 is connected to the first accommodating cavity 702. The wastewater opening of the wastewater cover assembly 8 is arranged at an upper portion of the wastewater cover assembly 8.

As shown in FIG. 47, a filter mesh 706 is arranged in the first accommodating cavity 702, filter holes are provided on the filter mesh 706, and the filter mesh 706 can accommodate dirt. Preferably, a first opening 704 is arranged at one end of the first accommodating cavity 702 that is connected to the wastewater cover assembly. The wastewater cover assembly hermetically covers the first opening 704. The filter mesh 706 is mounted on a side of the first accommodating cavity 702 close to the first opening 704. In an example, a placement platform is arranged on the first opening 704, an outer edge is arranged on an outer surface at one end of the filter mesh 706 close to a filter mesh opening, and the outer edge is placed on a mounting table. The one end of the filter mesh 706 close to the filter mesh opening is provided with a filter mesh handle. The filter mesh handle is a rotatable filter mesh handle. When the filter mesh 706 is taken out, the filter mesh handle can be rotated to a direction in which the filter mesh is pulled out, and the filter mesh may be pulled out from the first accommodating cavity 702 by pulling the filter mesh handle. When the filter mesh 706 is mounted on the first opening 704, the filter mesh handle can be rotated to be accommodated in the filter mesh 706. The filter mesh handle is set to be rotatable, so that it is convenient to pull out during take-out, and the filter mesh handle is accommodated in the filter mesh after being placed, does not occupy other space, and is convenient to assemble and use.

In a preferred embodiment, a clear water cover assembly 9 is further included. A second opening 705 is further provided on a surface of the housing 70. The second opening 705 is in communication with the second accommodating cavity 703. The clear water cover assembly 9 hermetically covers the second opening 705.

Wastewater Cover Assembly

As shown in FIG. 31 to FIG. 40, the wastewater cover assembly 8 includes an inner cover 81, a regulation cover 82, and a fixing member 83. A wastewater opening 801 is provided on the inner cover 81, the regulation cover 82 is movably connected to the inner cover 81, a through-hole 821 and a blocking portion 822 are arranged on the regulation cover 82, and the regulation cover 82 is configured to be rotatably regulated so that the through-hole 821 on the regulation cover 82 corresponds to the wastewater opening 801 or the blocking portion 822 on the regulation cover 82 corresponds to the wastewater opening 801. In an example, the regulation cover 82 is movably sleeved over the inner cover 81. The regulation cover 82 is skillfully designed. By rotating the regulation cover 82, not only opening and closing of the wastewater opening can be regulated, but also the wastewater cover assembly can be mounted on the device or removed from the device. Specifically, the regulation cover 82 is rotated. When the wastewater cover assembly is mounted on the device, the wastewater opening is in an open state, and the through-hole on the regulation cover 82 corresponds to the wastewater opening. The regulation cover 82 is rotated in a reverse direction, and the wastewater cover assembly is taken out from the device. Meanwhile, the blocking portion of the regulation cover 82 also hermetically blocks the wastewater opening, so that the wastewater opening is in a closed state.

The inner cover 81 has a cylindrical cover-like structure with one end being open, and the regulation cover 82 has a cylindrical cover-like structure. The design structure of the wastewater cover assembly is compact, fewer components are used, the assembly is convenient, the operation is convenient and fast, and the appearance is beautiful. The wastewater opening provided in the wastewater cover assembly may be regulated to be opened or closed. During use, the wastewater opening is opened, and wastewater and dirt are stored in the first accommodating cavity of the water tank through the wastewater opening; and when the water tank is disassembled and wastewater and dirt in the water tank are dumped, the regulation cover can regulate the wastewater opening to the closed state, to avoid a case that the wastewater and dirt are leaked to cause many troubles to cleaning and maintenance of the cleaning device.

As shown in FIG. 33 and FIG. 35 to FIG. 39, an air hole 804 is provided on the wastewater cover assembly 8, the air hole 804 is in communication with the first accommodating cavity 702, and both the wastewater opening 801 and the air hole 804 are arranged at an upper portion of the wastewater cover assembly 8. Preferably, an inner wall of the wastewater cover assembly 8 is provided with a blocking slot 805, and a side wall of the blocking slot 805 corresponds to the air hole 804. In an example, the air hole 804 corresponds to the blocking slot 805, and an opening direction of the blocking slot 805 is arranged perpendicular to the air hole 804. Further preferably, water-blocking cotton 806 is accommodated in the blocking slot 805. In an example, the regulation cover 82 is provided with a plurality of first air holes 820, a surface of the inner cover 81 is provided with an air-permeable slot 815, an inner diameter of the first air hole 820 is smaller than an inner diameter of the air-permeable slot 815, the bottom of the air-permeable slot 815 is provided with a plurality of second air holes 816, and second water-blocking cotton 817 is accommodated in the air-permeable slot 815. A second sealing slot 818 is arranged on a surface of the inner cover 81, the second sealing slot 818 is arranged around an outer side of the air-permeable slot 815, and a second sealing ring 819 is arranged in the second sealing slot 818. The second sealing ring 819 can be sealed between the inner cover 81 and the regulation cover 82.

At least one regulation structure is further included. The regulation structure includes a first regulation structure arranged on the inner cover 81 and a second regulation structure arranged on the regulation cover 82. The second regulation structure collaborates with the first regulation structure. The regulation cover 82 can be rotatably regulated to enable the through-hole 831 on the regulation cover 82 to correspond to the wastewater opening 801 or the blocking portion 832 on the regulation cover 82 to correspond to the wastewater opening 801. The arranged regulation structure can regulate and position the wastewater opening to be in an open or closed state.

In an example, as shown in FIG. 34 and FIG. 38 to FIG. 39, the first regulation structure includes a snapping protrusion 811, and the second regulation structure includes a first snapping slot 825 and a second snapping slot 826. When the regulation cover 82 is rotated until the through-hole 821 corresponds to the wastewater opening 801, the snapping protrusion 811 is snapped in the first snapping slot 825; or when the regulation cover 82 is rotated until the blocking portion 822 corresponds to the wastewater opening 801, the snapping protrusion 811 is snapped in the second snapping slot 826. Preferably, a first spring plate 823 and a second spring plate 824 are arranged on the regulation cover 82. The first snapping slot 825 is provided on a side of the first spring plate 823 close to the snapping protrusion 811. The second snapping slot 826 is arranged on a side of the second spring plate 824 close to the snapping protrusion 811. By rotating the regulation cover 82, the snapping protrusion 811 may be snapped into the first snapping slot 825 or the second snapping slot 826. It should be noted that, the first regulation structure and the second regulation structure may also be reversely arranged. That is, the regulation cover 82 is provided with the snapping protrusion 811, and the inner cover 81 is provided with a first snapping slot 825 and a second snapping slot 826.

In a preferred embodiment, the regulation cover 82 is further provided with a fastening component connected to the ground brush module 200 of the cleaning device. The through-hole 821 of the regulation cover 82 corresponds to the wastewater opening 801 when the water tank is mounted onto the cleaning device by using the fastening component; and the blocking portion 832 of the regulation cover 82 corresponds to the wastewater opening 801 when the water tank is separated from the cleaning device by using the fastening component. When the arranged fastening component is regulated by the regulation structure, the wastewater cover assembly is mounted on the device or removed from the device by using the fastening component, to implement integrated linkage, so that the operation is quite convenient and fast.

In a preferred embodiment, the inner cover 81 is provided with an annular sealing slot 802, the annular sealing slot 802 is arranged around an outer side of the wastewater opening, and a sealing ring is fixedly accommodated in the annular sealing slot 802. In another embodiment, a sealing ring is fixedly arranged on a surface of the inner cover 81, an annular sealing sheet is arranged on the sealing ring in a peripheral direction, and the annular sealing sheet faces the regulation cover. Preferably, there are at least two annular sealing sheets. The sealing ring can enable the blocking portion to hermetically block the wastewater opening or the through-hole to be in hermetical communication with the wastewater opening, so as to avoid a case that a liquid is accommodated in the wastewater cover assembly, that is, wastewater and dirt in the first accommodating cavity seep outward through the wastewater cover assembly to dirty the water tank or the cleaning device.

In a preferred embodiment, at least one limit structure is further included. The limit structure can limit a rotation angle of the regulation cover 82 along the inner cover 81. The limit structure includes a first limit structure arranged on the inner cover 81 and a second limit structure arranged on the regulation cover 82. The second limit structure collaborates with the first limit structure, which can limit a rotation angle of the regulation cover 82. The limit structure is arranged to limit a rotation angle of the regulation cover, to prevent the user from operating carelessly and damaging the wastewater cover assembly by excessively rotating the regulation cover.

In an example, as shown in FIG. 34 and FIG. 39, the first limit structure includes a first limit block 812 and a second limit block 813, and the second limit structure includes a protrusion block 827. When the regulation cover 82 is rotated until the through-hole 821 corresponds to the wastewater opening 801, the first limit block 812 butts against a side of the protrusion block 827 close to the first limit block 812; or when the blocking portion 822 corresponds to the wastewater opening 801, the second limit block 813 butts against a side of the protrusion block 827 close to the second limit block 813. It should be noted that this disclosure is not limited thereto. The first limit block 812 and the second limit block 813 may alternatively be arranged on the regulation cover 82, and the protrusion block 827 may alternatively be arranged on the inner cover.

In a preferred example, as shown in FIG. 48 to FIG. 49, a fastening component is arranged on the water tank, a first mounting structure is arranged on the ground brush module 200, and the water tank can be mounted onto or dismounted from the cleaning device by using the fastening component and the first mounting structure. Further preferably, as shown in FIG. 32, the fastening component is a mounting slot 828. Preferably, the mounting slot 828 is a U-shaped mounting slot arranged around an outer side of the wastewater opening. A socket 829 is arranged on a surface of the regulation cover 82. An opening of the mounting slot 828 faces the socket 829. The mounting slot 828 communicates with the socket 829. The first mounting structure is a convex edge 134 arranged around an end of the dirt discharging opening 212. When the water tank is to be mounted on the cleaning device, the convex edge 134 is configured to extend into the socket 829, and the convex edge 134 is moved and snapped into the mounting slot 828 by rotating the regulation cover, so that the water tank is mounted on the cleaning device. In this case, the through-hole on the regulation cover is rotated to correspond to the wastewater opening, and the snapping protrusion 811 is snapped into the first snapping slot 825. When the water tank is to be taken out, the regulation cover is rotated in a reverse direction until the convex edge 134 is removed from the mounting slot, so that the water tank can be taken out from the cleaning device. Meanwhile, the blocking portion on the regulation cover is rotated until the blocking portion corresponds to the wastewater opening and the snapping protrusion 811 is snapped into the second snapping slot 826. Preferably, a sealing ring is fixedly arranged at one end of the dirt discharging opening close to the wastewater opening, so that the dirt discharging opening is in hermetical communication with the wastewater opening. The fastening component and the mounting slot form a mounting structure of the water tank. The mounting structure is arranged at the wastewater opening and can securely and tightly fasten the dirt discharging opening and the wastewater opening together without leakage of wastewater and dirt. In the existing technology, the mounting structure is not arranged at the wastewater opening. If the water tank shakes on the device, a gap occurs between the dirt discharging opening and the wastewater opening, easily causing wastewater and dirt to seep. Preferably, a positioning member 916 is arranged on the clear water cover assembly. When the water tank is mounted on the ground brush module 200, the positioning member 916 is accommodated in a slot of the ground brush module 200. The positioning member plays a role in positioning the water tank, to prevent the water tank from rotating with the regulation cover when the water tank is mounted, thereby avoiding a case that the mounting is difficult to cause extremely poor user experience.

Preferably, the wastewater cover assembly is mounted hermetically on the housing. Further, the wastewater cover assembly is in a threaded connection to one end of the housing close to the first accommodating cavity 702. Certainly, this disclosure is not limited thereto, and the wastewater cover assembly may alternatively be in a snap connection to one end of the housing close to the first accommodating cavity 702. In an example, a wastewater cover sealing ring 814 is fixedly arranged in a position on the inner cover 81 close to the thread, so as to hermetically connect the inner cover 81 of the wastewater cover assembly to the housing.

Clear Water Cover Assembly

A clear water cover assembly 9 hermetically covers a second opening 705, as shown in FIG. 47. In an example, the clear water cover assembly 9 is in a threaded connection to the second opening 705. Certainly, this disclosure is not limited thereto, and other hermetical connection manners such as buckling and gluing fall within the protection scope of this disclosure. In an example, a clear water cover sealing ring 901 is fixedly arranged in a position on the delivery cover body 90 close to the thread, and the clear water cover assembly 9 is hermetically connected to the housing 7 by the clear water cover sealing ring.

As shown in FIG. 41 to FIG. 44, the clear water cover assembly 9 includes a clear water cover body 90; and the clear water cover body 90 is provided with a delivery passage, a blocking member is arranged at an end of the delivery passage close to the clear water cover body 90, a delivery hole 921 is provided on the blocking member, an inner diameter of the delivery hole 921 is less than an inner diameter of the delivery passage, an elastic member 9121 and a sealing block 9122 are arranged in the delivery passage, and the sealing block 9122 can seal the delivery hole 921 under an elastic force of the elastic member 9121. The clear water cover assembly may automatically block the delivery hole when the water tank is not in use by arranging the elastic member and the sealing block, to avoid liquid leakage; and when the water tank is in use, a gap is formed between the sealing block and the delivery hole by butting against the sealing block, and the liquid can be delivered through the delivery hole. It is convenient to use and easy to operate.

In a preferred example, as shown in FIG. 42 to FIG. 43, a stop surface is arranged in the delivery passage, one end of the elastic member 9121 is connected to the stop surface, and the other end of the elastic member 9121 is connected to the sealing block 9122. Preferably, the stop surface is an annular spring base 9126, and one end of the elastic member 9121 is placed on the annular spring base 9126. Certainly, the elastic member 9121 may be movably placed on the annular spring base 9126, or may be fixedly arranged on the annular spring base 9126. The other end of the elastic member 9121 is connected to the sealing block 9122. Similarly, the other end of the elastic member 9121 may be fixedly connected to the sealing block 9122, or may be movably connected to the sealing block 9122, for example, butts against the sealing block 9122 or is sleeved over the sealing block 9122. In conclusion, any elastic member that can elastically regulate the sealing block 9122 falls within the protection scope of this disclosure. Preferably, the elastic member 9121 is a spring. In an example, an outer diameter of an end of the spring close to the annular spring base 9126 is greater than an outer diameter of an end of the spring close to the sealing block 9122, and the outer diameter of the spring gradually decreases from the end of the spring close to the annular spring base 9126 to the end of the spring close to the sealing block 9122. In an example, the annular spring base 9126 is integrally connected to the delivery passage. In another example, the delivery passage includes a first delivery passage and a second delivery passage, an inner diameter of the second delivery passage is greater than an inner diameter of the first delivery passage, and one end of the elastic member 9121 butts against an end portion of the first delivery passage.

In a preferred embodiment, as shown in FIG. 42 and FIG. 44, a water passing hole 9124 is provided on the sealing block 9122, and the water passing hole 9124 does not correspond to the delivery hole 921. Preferably, a stop portion 9123 is arranged around the sealing block 9122. An outer diameter of the stop portion 9123 is greater than an inner diameter of the delivery hole 921. The water passing hole 9124 is provided on the stop portion 9123. Preferably, a sealing end 9125 is arranged at an end of the sealing block 9122 close to the delivery hole 921, and the sealing end 9125 is hermetically accommodated in the delivery hole 921. Further preferably, the sealing end 9125 is an elastic sealing end or the blocking member is an elastic blocking member, so that the sealing end is sealed in the delivery hole 921. In an example, the blocking member is a sealing silicone pipe, and the sealing block is a sealing plug. In an example, the stop portion 9123 is integrally connected to the sealing block 9122.

Preferably, as shown in FIG. 41 to FIG. 43, a pressure regulation valve 922 is arranged on the clear water cover body 90. The pressure regulation valve 922 can regulate a pressure difference between two sides of the clear water cover assembly, to avoid a case that liquid cannot be delivered due to a negative pressure. Preferably, the pressure regulation valve is a duckbill valve, to ensure that no negative pressure occurs in the water tank and water in the water tank can be delivered to the outside of the water tank or water outside the water tank can be delivered into the water tank.

Preferably, as shown in FIG. 41 to FIG. 43, a filter member 9111 is arranged at an end of the delivery passage away from the blocking member, and the filter member 9111 can filter liquid entering the delivery passage. In an example, the filter member 9111 is a water discharging cotton. The water discharging cotton can filter water in the water tank and then deliver the water to the outside of the water tank through the delivery passage. The water discharging cotton functions to filter impurities in the water, to prevent the impurities from entering the cleaning device and causing damage to components, thereby prolonging the service life of the device.

In a preferred embodiment, as shown in FIG. 42 and FIG. 43, the delivery cover includes a first delivery cover 91 and a second delivery cover 92 connected to the first delivery cover 91; and the delivery hole 921 is provided on the second delivery cover 92, and the second delivery passage 912 is in hermetical connection to the delivery hole 921. In an example, the second delivery cover 92 is detachably snapped on the first delivery cover 91. Certainly, this disclosure is not limited thereto. The second delivery cover 92 may be detachably connected or fixedly connected to the first delivery cover 91. The second delivery cover is snapped on the first delivery cover, so that the blocking member can be stably sealed at one end of the delivery passage, the structure is more stable, and the appearance is more aesthetically pleasant. Further preferably, the first delivery cover 91 is of a split design, the first delivery cover 91 includes a delivery cover 913 and a connection cover 914, the connection cover 914 is connected to the delivery cover 913, and the second delivery cover 92 is mounted on a side of the connection cover away from the delivery cover 913. Preferably, the connection cover 914 is in a threaded connection or snap connection to the delivery cover 913. In an example, the connection cover 914 is in a threaded connection to the delivery cover 913. Preferably, the connection cover 914 is in a threaded connection to the delivery cover 913 by using a sealing ring. In an example, the second delivery cover 92 is in a snap connection to the connection cover 914. In an example, a side surface of the connection cover 914 is provided with an anti-skid structure, to facilitate mounting and detachment of the connection cover.

The delivery passage includes a first delivery passage 911 and a second delivery passage 912. The first delivery passage 911 is arranged on the delivery cover 913. The second delivery passage 912 is arranged on the connection cover 914. The first delivery passage 911 is hermetically connected to the second delivery passage 912. Preferably, the second delivery passage 912 is hermetically mounted on the first delivery passage 911 by using a sealing ring. In an example, the elastic member 9122, the sealing block 9122, and the annular spring base 9126 are all arranged in the second delivery passage 912, and the water discharging cotton is arranged at an end of the first delivery passage 911 away from the second delivery passage 912. Preferably, the first delivery passage 911 is an L-shaped first delivery passage. During use, an end of the first delivery passage 911 away from the second delivery passage 912 is close to the bottom of the liquid in the first accommodating cavity, so that the first delivery passage can fully deliver the liquid in the second accommodating cavity 703. Certainly, the first delivery passage 911 may alternatively be a hose, so that during use, the end of the first delivery passage 911 away from the second delivery passage 912 naturally droops to or is close to the bottom of the liquid in the first accommodating cavity.

Further, the delivery cover 913 is of a split design, and the delivery cover 913 further includes an engagement cover 915. The delivery cover 913 is detachably mounted on the engagement cover 915. In an example, the delivery cover 913 is snapped on the engagement cover 915, and the connection cover 914 is connected to the engagement cover 915. The engagement cover 915 is connected to the second opening of the housing through threads. In an example, the engagement cover 915 is hermetically connected to the second opening of the housing by a sealing ring. In an example, a surface of the delivery cover is provided with a water discharging hole, which helps water in the liquid to flow back and forth when the clear water cover assembly covers the water tank, and does not occupy a space of the second accommodating cavity for accommodating the liquid.

It should be noted that all technical features of the clear water cover assembly may be freely combined in a case without conflict, and the free combination or simple variations, changes, and modifications thereof fall within the protection scope of this disclosure.

All technical features of all the foregoing components may be freely combined in a case without conflict, and the free combination or simple variations, changes, and modifications thereof fall within the protection scope of this disclosure.

Compared with the prior art, the technical solution in this disclosure has at least one or more of the following beneficial effects.

The ground brush holder body 203 is preferably a support frame made of an integrally stretched and formed aluminum material to stably support the entire device. If a plastic support frame is used for supporting, the plastic support frame needs to be thickened, making the device bulky. If special plastic is used, costs may increase, and a structure is complex. In addition, an assembled and formed structure is unstable and prone to damage.

A combination of the threaded rod assembly and the dirt holding tank is provided. The threaded rod assembly squeezes a rolling brush surface and rotates in a direction opposite to that of the rolling brush. Compared with the technical solution in the prior art in which the rolling brush is scraped with a scraper to remove water and dirt, when the rolling brush is squeezed with the thread, wastewater and dirt on the rolling brush can be squeezed out, which is conducive to self-cleaning and automatic squeezing and drying of the rolling brush.

A threaded rod body of the threaded rod assembly 400 is provided with a first thread set 402 and a second thread set 403, a thread diameter of the second thread set 403 is greater than a thread diameter of the first thread set 402, a thread pitch of the second thread set 403 is less than a thread pitch of the first thread set 402, and the second thread set is arranged corresponding to the dirt discharging opening 212. The switching between thread sets of different thread pitches can increase a transmission force and a centrifugal force generated by spiraling in an area close to the dirt discharging opening 212, increase a transmission pressure, and is more beneficial for transmission of wastewater and dirt to the wastewater tank. The switching between thread sets of different diameters can also increase a transmission force and a centrifugal force generated by spiraling in an area close to the dirt discharging opening 212, increase a transmission pressure.

A pressing roller 605 is arranged on the ground brush flip-over cover 600, to further squeeze the rolling brush to remove water, block large-particle dirt, and avoid water marks and dirt remaining on the ground after the rolling brush cleans the ground.

The ground brush holder is provided with a dirt holding tank 204, and wastewater, clear water, and dirt form a wastewater and dirt flow guide passage through cooperation between the threaded rod assembly and the dirt holding tank, and are guided out through a wastewater and dirt flow guide opening, thereby resolving a problem that water and dirt cannot be effectively removed in the prior art. The angle of the semi-surrounding closed structure of the dirt holding tank 204 preferably ranges from 180 degrees to 270 degrees. This arrangement enables the dirt holding tank 204 to form a relatively closed cavity by using a rolling brush surface, which is more conducive to rotary delivering of the threaded rod assembly. The wastewater and/or the particulate dirt on the rolling brush all falls into the dirt holding tank, to avoid overflow of the wastewater and/or the particulate dirt.

After completing cleaning of the ground, the ground cleaning apparatus may further mop the ground longer in a clear water state. In this case, the ground is clean. The rolling brush substantially completes self-cleaning work under the rubbing action of the clear water and the threaded rod assembly, and the rolling brush is not prone to generate off-odors.

Although the ground cleaning machine in the prior art is stated to have the function of dry sweeping and wet mopping, the ground cleaning machine generally has a working principle of using a scraper to scrape off water stains on a rolling brush, but actually cannot achieve an effect of “mopping to be dry” without water stains, and cannot effectively remove dirt and wastewater. In addition, a product with such a function has a high selling price and a complex structural design, and is prone to damage. Alternatively, water stains are sucked completely by using a vacuum cleaner with a large suction force, but the noise is high, and the product price is high. If the scraper of these products exerts a relatively large pressure on the rolling brush, to perform excessive water scraping, great resistance is caused and the rolling brush body is damaged. In addition, regardless of how much pressure the scraper exerts on the rolling brush, water and dirt cannot be fully removed. Because the scraper is in surface contact with the rolling brush body with one being moving and the other being static, the friction resistance is high, and the squeezing efficiency is low, the scraper and the rolling brush are likely to be damaged, and relatively large resistance is generated for the rolling brush. On the contrary, if the applied pressure is small, the wastewater of the rolling brush body cannot be effectively removed, so that water stains are easily formed on the ground from the rolling brush body.

In this disclosure, in an aspect, the flexible thread set of the threaded rod assembly and the rolling brush surface are used for rotary squeezing, the threaded rod assembly and the rolling brush assembly are relative rotary squeezing of two cylindrical bodies, resistance is low, and a squeezing effect is good, which is more conducive to squeezing water and removing or scraping off dirt, thereby forming a rubbing and self-cleaning effect. In addition, the thread set of the threaded rod assembly is subtly used to rotate to form the wastewater and dirt delivery passage, which is more conducive to guiding out wastewater and/or particulate dirt. The cleaning device is further provided with a clear water tank and a water pump, to deliver clear water to one end of the threaded rod assembly or a surface of the rolling brush body, so that the rolling brush body further forms a self-cleaning function, which is more conducive to the overall product of this disclosure not requiring an auxiliary device to implement the cleaning function like other products on the market, thereby implementing a true self-cleaning function.

The rolling brush has a drive motor mechanism arranged in the rolling brush body, and has a compact structure to save space, which can reduce the volume of the assembly and the device, so that the device is lightweight, portable, and simplified, and production costs can be reduced.

When the rolling brush assembly is detached from the cleaning device, the drive motor mechanism of the rolling brush is detached integrally with the rolling brush, which is simple to operate and convenient to use, and also avoids a case that wastewater and/or particulate dirt on the rolling brush falls and is immersed on the driving structure, to cause a short circuit of the driving structure and therefore damage the driving structure. The driving structure in the rolling brush is electrically connected to the rolling brush lifting handle mounting slots of the ground brush holder left and right covers, so that the structure is simple, the mounting is convenient, and the design is ingenious. In this way, it is very convenient to disassemble and mount the rolling brush assembly.

A heat dissipation structure is arranged in the rolling core of the rolling brush assembly 300, and the heat generated by the transmission gear-box motor 303 can be discharged through a heat dissipation passage, to cool down the motor. In this way, the motor can be prevented from being excessively high in temperature and burnt out. A motor assembly formed by the transmission gear-box motor 303 is entirely wrapped by an aluminum housing, which is waterproof, and is conducive to heat dissipation.

In actual use, the rolling brush often needs to be replaced, and the integral mounting and integral detachment of the rolling brush assembly bring good user experience for the user to replace the rolling brush.

The wastewater tank is snapped on or fixed to a fixing member of the ground brush module, to facilitate mounting; and a disassembly button is arranged, and the wastewater tank can be easily disassembled by pushing the disassembly button, which helps to pour out the wastewater and dirt or clean the wastewater tank. It is easy particularly for a female group with more frequent use and less strength to disassemble the wastewater tank, making the operation of the wastewater tank simpler and more convenient.

The clear water tank is arranged, so that the rolling brush can be cleaned with clear water while the rolling brush cleans the wastewater and dirt, to implement a self-cleaning function of the rolling brush, thereby helping to clean the ground better and more cleanly. In addition, a sliding snap fastener structure is arranged on the lever body, so that water purification tanks of different volumes and models can be mounted as required, thereby improving the free flexibility of the device.

In the present disclosure, a rolling brush detection structure is arranged, which can detect whether there is water on the rolling brush, to prevent the hard collodion cotton rolling brush from cleaning the ground, so that the cleaning apparatus is more intelligent. After the cleaning apparatus is started, the rolling brush detection structure first detects whether there is water on the rolling brush. If there is water, it indicates that the collodion cotton rolling brush is in a soft state and can directly clean the ground. If there is no water on the rolling brush, it indicates that the collodion cotton rolling brush is in a dry state, and the control module controls the first water pump to deliver water to the collodion cotton rolling brush. If the rolling brush detection structure detects that there is water on the collodion cotton rolling brush, the first water pump stops delivering water to the collodion cotton rolling brush, and the cleaning apparatus starts cleaning operation. In a cleaning process of the cleaning apparatus, the control module controls the second water pump to deliver water to the dirt holding tank in which the threaded rod assembly is mounted. The threaded rod assembly mounted in the dirt holding tank rotates to deliver water and dirt while squeezing the collodion cotton rolling brush, which can not only squeeze and clean the rolling brush, but also deliver and clean wastewater and dirt.

The threaded rod assembly is arranged in squeezing contact with the rolling brush assembly. During rotation of the rolling brush assembly and the threaded rod assembly, a negative pressure area is formed in the dirt holding tank, and the threaded rod assembly squeezes water and dirt on the collodion cotton rolling brush of the rolling brush assembly into the dirt holding tank. Because the thread set on the threaded rod assembly has a rotation direction and the threaded rod assembly cooperates with the dirt holding tank, water, dirt, and gas in the dirt holding tank are driven by the threaded rod assembly to be delivered to the wastewater opening of the dirt holding tank, and then are thrown into the wastewater tank through high-speed rotation of the second thread set. After the water, the dirt, and the gas in the dirt holding tank are delivered to the wastewater opening, a negative pressure is formed in the dirt holding tank, and the water, the dirt, and the air that are cleaned rotatably by the rolling brush assembly replenish and enter the negative pressure area, which is circulated in this way. After entering the wastewater tank, the wastewater, the dirt, and the gas occupy the volume in the wastewater tank, and air in the wastewater tank needs to be discharged, making it convenient for the wastewater, the dirt, and the gas to continuously enter the wastewater tank. Therefore, an air hole is provided on the shell of the wastewater tank. If the gas pressure in the wastewater tank is not released, water, dirt, and gas in the dirt holding tank cannot continuously enter the wastewater tank, causing water to leak from the cleaning device.

An air hole is provided on the wastewater tank. After water, dirt, and gas in the dirt holding tank enter the wastewater tank, the gas in the wastewater tank is discharged through the air hole, to balance air pressures inside and outside the wastewater tank.

An inner wall of the wastewater tank is provided with a blocking slot, which functions to block the air hole and the wastewater and dirt, so as to avoid a case that the air hole is sealed by the wastewater and dirt surging in the wastewater tank or the wastewater and dirt thrown into the wastewater tank from the wastewater tank water inlet, and consequently gas in the wastewater tank cannot be evacuated, air pressure in the wastewater tank cannot be released, or the wastewater and dirt overflow from the air hole. Disposing the water-blocking cotton in the blocking slot has a better surging preventing effect, can prevent dirt from overflowing from the air hole together, and can also prevent external foreign bodies from falling into the wastewater tank from the air hole.

The rolling brush assembly is sleeved over the motor assembly. The motor assembly drives the rolling brush assembly to rotate through a rotary joint and a mounting groove. The motor assembly is fixedly mounted on the device body. When the rolling brush assembly is detached, the motor assembly is not detached together with the rolling brush assembly, so that the structural design is simple, disassembly is convenient, and operation is easy. A convex strip meshed with the mounting groove is arranged on the rotary joint, an angle between a length direction of the convex strip and a length direction of the rolling brush assembly is less than 90 degrees, and along a direction from an end of the convex strip close to the drive motor to an end of the convex strip away from the drive motor, the convex strip is inclined toward a rotation direction of the rolling brush assembly during advancing. Therefore, when the cleaning device is used, the rolling brush assembly rotates forward. A force toward the motor assembly is applied to the rolling brush body during rotation, so that the rolling brush body is more tightly sleeved over the motor assembly during rotation, to ensure that the rolling brush assembly is not loosened from the device body when the device is in use. In addition, the end of the rolling brush assembly away from the motor assembly is magnetically attracted to the device body, which is convenient for disassembly and mounting, and labor-saving, and is particularly suitable for use by female users with little strength.

There are few existing two-in-one water tanks. The water tanks are increasingly large. An excessively large water tank is inconvenient to use. In this disclosure, a unique partition board is designed to reduce the volume of the water tank as much as possible and save space. When the water tank and the cleaning module are placed horizontally, the dirt discharging opening of the wastewater cavity is connected to the dirt discharging opening of the cleaning module, and the dirt discharging opening of the wastewater cavity is arranged on a side wall of the wastewater cavity. In this way, when wastewater and dirt are collected, the wastewater cavity can only use the volume space below the wastewater opening, and the volume space above the wastewater opening is wasted. Alternatively, the wastewater opening is specially designed to be arranged at an upper portion of the wastewater cavity to fully use the volume of the wastewater cavity. Otherwise, because the wastewater and dirt are thrown out by using the threaded rod assembly with a natural throwing force, only half of the lift can be reached through throwing, and the space above the wastewater opening is wasted. In view of the foregoing situation, the space at the upper portion of the wastewater cavity is set as a clear water cavity by using a unique partition board. Advantages of such arrangement make it unnecessary to design a complex dirt discharging structure, and wastewater and dirt can be thrown into the wastewater cavity only by using a lift of natural throwing of the threaded rod assembly. In addition, the upper half of the wastewater cavity divides the water tank into a clear water cavity (that is, the second accommodating cavity) and a wastewater cavity (that is, the first accommodating cavity) through a unique curved or inclined partition board. The clear water cavity may be directly connected to the device body. A clear water pipe of the clear water cavity is very short, so that the structure of the entire cleaning device is more minimalist. Certainly, water in the clear water cavity is sucked through a suction apparatus to supply water to the rolling brush surface. Through the foregoing design, the present device is ingenious in that the cleaning module throws the wastewater and dirt into the wastewater cavity through the lift driven by the threaded rod assembly without providing additional drive. However, because the natural lift is limited and heights of the dirt discharging opening and the wastewater opening are relatively small, an upper portion of the wastewater cavity is cut into a clear water cavity by using a unique partition board, to fully use the volume of the water tank. The function of the unique cleaning module is isolated from the unique partition board of the water tank, so that the water tank can be fully utilized.

If the two-in-one water tank of this disclosure matches another similar vacuum cleaner or ground cleaning machine, a degree of matching between them is not higher than that between the water tank of this disclosure and the cleaning module with the threaded rod assembly. The cleaning module of this disclosure only needs to drive a driving component of the rolling brush. The threaded rod assembly that is in close contact with the rolling brush can rotate with the rolling brush. The rotation of the threaded rod assembly can drive wastewater and dirt to be delivered to the dirt discharging opening. In addition, the rotation of the threaded rod assembly generates a centrifugal force. A lift is generated under the action of the centrifugal force. The wastewater and dirt are thrown into the wastewater cavity through the lift. Such a manner of dirt discharging is extremely simple, cost-effective, minimalist, and efficient. In addition, internal space of the water tank is fully utilized through a unique partition board design. The foregoing features are combined, and the manner of dirt discharging of the threaded rod assembly and the manner of designing the water tank constitute an obvious innovation compared with the prior art, which produces unexpected effects, further reduces structural complexity of the cleaning device, and can maintain cleaning efficiency, reduce product costs, and improve user experience.

The water tank is further preferably designed to be cup-shaped, and the ports of the wastewater cover assembly and the clear water cover assembly are therefore designed to be circular. A circular sealing ring may be used to seal the wastewater cover assembly and the clear water cover assembly. The circular sealing ring has a better sealing effect than sealing rings in other shapes, and has a longer service life. In addition, the circular sealing ring is less expensive than sealing rings in other shapes. The water tank is designed to be cup-shaped, which facilitates opening of the wastewater cover assembly and the clear water cover assembly, cleaning of the wastewater cavity, and replenishment of clear water to the clear water cavity. In addition, a filter member is arranged in the wastewater cavity to accommodate dirt, to separate wastewater from the dirt in the wastewater cavity.

In the description of this specification, the description of the reference terms such as “an embodiment”, “some embodiments”, “still another embodiment”, “another embodiment”, “other embodiments”, “preferably”, “example”, “specific example”, or “some examples” means that the specific features, structures, materials or characteristics described with reference to the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, schematic descriptions of the foregoing terms are not necessarily directed at the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in an appropriate manner. In addition, a person in the art may combine different embodiments or examples described in this specification.

Although the embodiments of the present disclosure have been shown and described above, it can be understood that the foregoing embodiments are exemplary and should not be understood as limitation to the present disclosure. A person of ordinary skill in the art can make changes, modifications, or variations to the foregoing embodiments within the scope of the present disclosure.

	Number	Date	Country
Parent	PCT/CN2023/092127	May 2023	WO
Child	18936229		US

GROUND CLEANING APPARATUS

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