DUST BOX AND CLEANING DEVICE

Abstract

The present application discloses a cleaning device and its dust box. The cleaning device may comprise a body, a dust box, and at least two fans. The dust box may be provided for connection to the body, the at least two fans are provided in the body for forming an airflow into and out of the dust box through the apparatus body. The dust box may be provided such that the airflow formed by each of the at least two fans can flow out of the dust box in different directions.

Description

TECHNOLOGY FIELD

This application relates to the technical field of a cleaning device and its dust box.

BACKGROUND

With the improvement of people's living standards and the rapid development of intelligent device technology, intelligent cleaning device such as sweeping robots, dusters, vacuum cleaners, etc. are widely welcomed. The Internet of Things technology makes everything connected, and makes the market for intelligent cleaning device even broader.

The cleaning efficiency and effectiveness of the current smart cleaning device needs to be improved.

SUMMARY

A technical problem solved by the current application is to provide a cleaning device and a dust box thereof, which can effectively improve the cleaning efficiency and effectiveness.

To solve the above technical problems, the present application provides a cleaning device including a body, a dust box, and at least two fans. The dust box connects to the body, the at least two fans are provided in the body and are used to form an airflow into the dust box, through the body, and then out of the dust box. The dust box is configured to allow airflow formed by the at least two fans to flow out of the dust box in different directions.

The present application also provides a cleaning device including a body, a dust box, and at least two fans. The body is provided with a dust suction port, the dust box connects to the body. The dust box is provided with a holding cavity, a dust inlet and at least two air outlets. The dust inlet connects with the dust suction port and the holding cavity, the air outlets are connected with the holding cavity. The fans are provided corresponding to the air outlets, and are used to form airflow out through the corresponding air outlets. The at least two air outlets are set in different directions.

In order to solve the above technical problems, another technical solution adopted in this application is: to provide a cleaning device including a body, a dust box, and at least two fans. The body is formed with a dust suction port. The dust box comprises a dust inlet and at least two air outlets, the dust inlet connects to the dust suction port. The fans are provided in the body and are used to connect to the air outlets respectively, so as to form at least two airflow channels in the dust box correspondingly through the dust inlet to the at least two air outlets. Wherein, an angle between the at least two airflow channels is greater than 0°.

The present application further provides a dust box with a holding cavity, a dust suction port and at least two air outlets, the dust suction port is connected to the holding cavity, and at least two air outlets are connected to the holding cavity. The air outlets are connected to the holding cavity, the at least two air outlets are connected to the holding cavity, so that air outlets are provided in different directions.

The present application sets at least two fans connected to the dust box. When the at least two fans are at work, air can be pumped to form the airflow into and out of the dust box through the body of the equipment, the airflow into the dust box through the body can flow out in different directions, so that the airflow formed by different fans can be bifurcated when flowing in the dust box, which reduces the mutual interference between the airflow and makes the airflow smoother. The suction power is effectively enhanced and the cleaning effect is greatly improved. In this way, the airflow from each direction can work together, which can quickly improve the suction power and can generate more suction to suck in objects such as garbage, compared to the single fan and single duct design, this embodiment can suck in larger particles of debris, heavier mass of garbage, and can effectively improve the cleaning effect.

DETAILED DESCRIPTION OF DRAWINGS

FIG. 1 is a top view of a structure of a cleaning device of an embodiment of the present application.

FIG. 2 is a left view of the structure of the cleaning device of an embodiment of the present application.

FIG. 3 is a bottom view of the structure of the cleaning device of the present application.

FIG. 4 is a bottom view of a body of the structure of the cleaning device of an embodiment of the present application.

FIG. 5 is an exploded view of the cleaning device of the present application.

FIG. 6 is a top view of a structure of a dust box of an embodiment of the present application.

FIG. 7 is a schematic view of the dust box.

FIG. 8 is a cross-sectional diagram of the dust box alone A-A direction.

FIG. 9 is an exploded diagram of an embodiment of the dust box.

FIG. 10 is another exploded diagram of an embodiment of the dust box.

FIG. 11 is an exploded diagram of a second embodiment of the dust box assembly.

FIG. 12 is a schematic view of part of the structure of the dust box.

FIG. 13 is an exploded diagram of a third embodiment of the dust box.

FIG. 14 is another schematic diagram of the dust box shown in FIG. 13.

FIG. 15 is a schematic diagram of part of the structure of the dust box.

FIG. 16 schematic diagram of the structure of a deformed structure of the dust box shown in FIG. 13.

FIG. 17 schematic diagram of the structure of a deformed structure of the dust box shown in FIG. 13.

FIG. 18 is a schematic diagram of an embodiment of the dust box and the fans. structure of a dust box of an embodiment of the present application.

FIG. 19 is an exploded diagram of a structure of a dust box and a fan.

FIG. 20 is a schematic diagram of an embodiment of the first air duct member.

FIG. 21 is another schematic diagram of an embodiment of the first air duct member.

FIG. 22 is a schematic diagram of an embodiment of the second air duct member.

DETAILED DESCRIPTION OF EMBODIMENTS

The technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application, and it is clear that the embodiments described are only some of the embodiments of this application and not all of them. Based on the embodiments of this application described in this application, all other embodiments obtained by a person skilled in the art without creative labor shall fall within the scope of protection of this application.

The inventors discovered after a long period of research that cleaning devices such as vacuum cleaners or floor sweepers rely on negative pressure to suck up debris, garbage, dust, etc. To obtain stronger negative pressure and suction, the most common practice in the industry is to increase the volume of the fan or the fan speed, but increasing volume may significantly increase noise, and increasing the fan speed may decrease the life of the fan, while the obtained suction is very limited. To solve the above problems, the inventor provides following embodiments after a long period of research and development and testing.

The following is an exemplary description of an embodiment of the present application cleaning equipment.

Referring to FIG. 1 to FIG. 3, the cleaning device 1 of this embodiment comprises: a body 10 and a dust box 20 connected to the body 10.

The dust box 20 can be installed in the body 10 by inserting, assembling, combining, etc. The dust box 20 can be used to store dust, debris and other trash objects. The body 10 has functions like sweeping or vacuum, or both sweeping and vacuuming functions, as well as other cleaning functions.

As shown in FIG. 1 and FIG. 2, the body 10 comprises a main portion 11, a walking assembly 12, a cleaning assembly 13, a dust suction assembly 14, a battery assembly 15, a sensing assembly 16, and a control circuit 17.

The main portion 11 can serve as an overall structural framework of the body 10, and can comprise a shell and an inner casing, etc. The main portion 11 can be used to accommodate a plurality of functional parts, electrical devices, and other components to protect the internal components and structure of the cleaning device 1, etc. The main portion 11 has a bottom 111, a top 112, and a perimeter 113.

As shown in FIG. 2 and FIG. 3, the main portion 11 may be provided with a dust suction port 114, a connector 115, and an exhaust port 116. The dust suction port 114 and the connector 115 are connected. After the body 10 and the dust box 20 are assembled, the connector 115 can be connected to the inside of the dust box 20. The dust suction port 114 can also be connected to the inside of the dust box 20. The dust suction port 114 can be opened at a bottom 111 of the body 10 and can be set towards a working surface (e.g. the floor) of the cleaning device 1, thus being able to suck up dust or garbage from the working surface.

As shown in FIG. 2 and FIG. 3, the walking assembly 12 may be provided primarily in the main portion 11, and the walking assembly 12 could enable the cleaning device 1 to have a movable function. The cleaning assembly 13 is provided in the main portion 11 for providing a sweeping function to clean the working surface (e.g., the floor) of the cleaning device 1 while the cleaning device 1 is performing work. The dust suction assembly 14 is provided in the main section 11 for sucking dust, debris, and other waste objects from the work surface of the cleaning device 1 into the dust box 20. The battery assembly 15 stores power and can drive components such as the walking assembly 12, the cleaning assembly 13, the vacuuming assembly 14, the sensing assembly 16, and the control circuit 17. The sensing component 16 is used to perform sensing work and can implement one or more corresponding functions, such as infrared function, collision sensing function, etc., which can be used to achieve obstacle avoidance, navigation, back charging and environmental recognition. The control circuit 17 can be coupled to the walking assembly 12, the cleaning assembly 13, the dust suction assembly 14, the battery assembly 15, and the sensing assembly 16, respectively, and can be used to control the operation of the above components to achieve the corresponding operation. The control circuit 17 can be an MCU or a circuit board including an MCU that serves as the processing hub of the cleaning device 1.

As shown in FIG. 2 and FIG. 3, the walking assembly 12 may comprise a drive mechanism 121 and a rolling wheel mechanism 122, and the drive mechanism 121 is used to drive the rolling wheel mechanism 122 to rotate, which may enable walking on the working surface of the cleaning device 1. The drive mechanism 121 is, for example, an electric motor. The rolling wheel mechanism 122 comprises, for example, two first rotating wheels 1221 and one second rotating wheel 1222. As shown in FIG. 2 and FIG. 3, the two first rotating wheels 1221 may be spaced apart at the bottom 111 of the main portion 11. The two first rotation wheels 1221 can be coaxially connected as the main drive wheels, i.e., the drive mechanism 121 can directly drive the two first rotation wheels 1221 for rotation. The second rotating wheel 1222 can be provided at the bottom of the dust box 20 as the driven wheel, i.e., when the first rotating wheel 1221 is driven and travels, the second rotating wheel 1222 is pushed and travels. The control circuit 17 can control the drive mechanism 121 to perform work, such as speed control, steering control, forward-backward control, etc.

As shown in FIG. 2 and FIG. 3, the cleaning assembly 13 may comprise a side sweeper 131 and a side sweeper motor 132 connected to the side sweeper 131. The side sweeper 131 can be provided at the bottom 111 of the main part 11, and the side sweeper motor 132 is used to drive the side sweeper 131 to rotate, and the side sweeper 131 contacts with the working surface (e.g., the ground) of the cleaning device 1 and achieves sweeping of the ground by rotation. The position relationship between the side sweeper motor 132 and the side sweeper 131 shown in FIG. 2 is only schematic, and does not constitute a limitation on the structure, position, connection, transmission, or mode of operation between the two. The drive mechanism 121 of the walking assembly 12 and the side sweeper motor 132 of the cleaning assembly 13 can be the same drive component, i.e. both share the same drive system. The control circuit 17 can also control the side sweeper motor 132 for operation, such as speed control, frequency control, steering control, etc.

As shown in FIG. 2 and FIG. 3, the cleaning assembly 13 may also comprise a roller brush 133, which contacts the work surface of the cleaning device 1 in a rolling manner and thereby roll up the hair, paper scraps, and other waste objects on the work surface. The roller brush 133 can be rotatably provided in the dust suction port 114, which in turn simultaneously curls and adsorbs the waste objects while vacuuming through the dust suction port 114, improving cleaning efficiency.

As shown in FIG. 2 and FIG. 3, the battery assembly 15 is used to power the entire cleaning device 1. Specifically, the battery assembly 15 may comprise a battery 151 and a charging terminal 152, with the charging terminal 152 electrically connected to the battery 151. A charging cradle can charge the battery 151 through the charging terminal 152. The charging terminal 152 can be provided on the bottom 111 of the body portion 11 and can be exposed on the surface of the bottom 111 of the main portion 11, and thus be accessible.

As shown in FIG. 2 and FIG. 3, the sensing assembly 16 can be used to transmit and receive corresponding signals to allow communication and interaction with other devices around the cleaning device 1. For example, the sensing assembly 16 can comprise at least one infrared sensor (not shown), and the infrared sensor can transmit and receive the corresponding infrared signal (infrared light), decode the infrared signal to obtain the information, instructions, etc. carried by or corresponding to the signal for obstacle avoidance, communication with the rechargeable seat, etc. The sensing assembly 16 can also comprise one or more of a collision sensor (not shown), a distance sensor (not shown), an image sensor (not shown), etc. Specifically, the sensing assembly 16 can receive the infrared signal sent by the rechargeable seat, which in turn can cause the cleaning device 1 to perform an operation corresponding to that infrared signal. For example, the control circuit 17 decodes the infrared signal to obtain the corresponding information or instructions, and then controls the walking assembly 12 to work according to the corresponding information or instructions, causing the cleaning device 1 to move to the charging stand for charging.

As shown in FIG. 2, the vacuum assembly 14 comprises a fan 141. The fan 141 is provided adjacent to the air exhaust port 116. The fan 141 can form an airflow that passes through the dust suction port 114, the connector 115, the dust box 20, and the exhaust port 116 in sequence, so that the dust suction port 114 has suction power and can suck up dust or garbage from the work surface. The number of fans 141 and the number of exhaust ports 116 may be the same. For example, if the number of exhaust ports 116 is two, then the number of fans 141 can be two. Of course, the vacuum assembly 14 can also comprise a filter component such as a screen, for example, set between the exhaust port 116 and the dust box 20, allowing larger trash or particles to remain in the dust box 20. The fan 141 can be connected to the dust box 20 from the side of the housing area 1130, either against the dust box 20, or indirectly.

Referring to FIG. 4 and FIG. 5, the circumference 113 of the main portion 11 may be partially enclosed to form the housing area 1130, in a partially enclosed or similarly semi-enclosed shape, which may be adapted to the shape of the dust box 20. As shown in FIG. 3 and FIG. 4, the housing area 1130 is used to hold the dust box 20 to enable the dust box 20 to be disassembled removably from the body 10. As shown in FIG. 2 and FIG. 4, the connection port 115 is opened on the circumferential side 113 and is oriented toward the housing area 1130. The exhaust port 116 may be opened on the circumferential side 113, spaced from the connection port 115. For example, if the housing area 1130 is substantially U-shaped, the connection port 115 may be opened at the bottom of the U-shape of the housing area 1130, i.e., the perimeter side 113 faces the middle of the housing area 1130, and the exhaust port 116 may be opened at both sides of the U-shape of the housing area 1130, i.e., the perimeter side 113 faces both sides of the housing area 1130.

As shown in FIG. 5, the fan 141 may be provided between the exhaust port 116 and the housing area 1130. The fan 141 can be connected to the dust box 20 from the side of the housing area 1130, either against the dust box 20, or indirectly. For example, there is a placement cavity 1140 formed in the body 11, adjacent to and connected to the housing area 1130, and the exhaust port 116 is connected to the placement cavity 1140, and the placement cavity 1140 is used to hold the fan 141, etc. The fan 141 is placed against the dust box 20 inserted into the holding area 1130 in the placement cavity 1140. For example, the fan 141 may abut against the side wall 20c of the dust box 20.

The control circuit 17 can also control the fan 141 for operation, such as speed control, time control, etc. Of course, the vacuum assembly 14 can be part of the device body 10 or it can be independent of the device body 10, with the vacuum assembly 14 as a separate part. In this way, the cleaning device 1 comprises the body 10, the vacuum assembly 14, and the dust box 20.

The dust suction port 114 can be opened on the side wall 113 of the body 10. The housing area 1130 can be used to hold the dust box 20, which can be used to collect objects such as garbage. After objects such as trash are retained in the dust box 20, the airflow exits through the exhaust port 116. The cleaning assembly 13 and the vacuuming assembly 14 can work together in conjunction with each other. For example, the dust suction port 114 can be set adjacent to the side sweeping mechanism 131, so that the garbage or dust swept out during the rotation of the side sweeping mechanism 131 can be sucked into the dust box 20.

The body 10 can be further provided with a drag and wipe mechanism (not shown). The mopping mechanism is used to clean the working surface of the cleaning device 1 and can be provided in the main portion 11. For example, the drag and wipe mechanism can be provided at the bottom 111 of the main portion 11. In some embodiments, the mopping mechanism can replace the side sweeper 131, and the side sweeper motor 132 can drive the mopping mechanism to rotate and then mop and clean the corresponding cleaning area. In this regard, the drag and wipe mechanism can be set in a circular or circular-like shape. In other embodiments, the mopping mechanism may be provided in other areas of the bottom 111 of the main portion 11, spaced apart from the first rotating wheel 1221, the side sweeping mechanism 131, the roller brush 133, etc. In response, the drag and wipe mechanism can take on a shape that is compatible with that other area. During the cleaning process of the cleaning device 1 on the working surface, the drag and wipe mechanism is able to touch the working surface in order to wipe and clean the working surface. The drag and wipe mechanism is, for example, a mop, a wet wipe or a sponge.

The above structure of the body 10 is only an exemplary illustration and is not limited to the above exemplary structure. Of course, the device body 10 in this embodiment may also be the device body of an existing cleaning device, such as the corresponding body of an existing smart cleaning robot, smart vacuuming robot, etc.

The dust box in the above embodiment of the present application cleaning device can be seen in the following description of the embodiment of the dust box of the present application, and an exemplary description of the embodiment of the dust box of the present application is given below.

Referring to FIG. 5 and FIG. 7, the dust box 20 could be used to hold trash, such as debris and dust that are being sucked up. The dust box 20 is further configured with an airflow passage 2000. As shown in FIGS. 5 and 6, when fan 141 is in operation, the airflow enters the dust box 20 from the suction port 114, flows substantially along the airflow passage 2000, and then out of the dust box 20, while the trash objects remain inside the dust box 20. The number of airflow passages 2000 can be at least two, at least two of the airflow passages 2000 being set so that the airflow flowing within each exits the dust box 20 in different directions. That is, the angle between at least two of the airflow passages 2000 is actually greater than 0°, such that the airflow in two of the airflow passages 2000 may diverge from each other and are not parallel flows.

As shown in FIG. 7, the dust box 20 has a holding cavity 200, sucked trash such as debris and dust are hold in the holding cavity. The dust box 20 also has a dust suction port 210 that connected to the holding cavity 100. The trash sucked by the holding cavity 200 through the dust suction port 210. The dust box 20 may also have at least one air outlet 220. For example, the dust box 20 has at least two air outlets 220, the two air outlets 220 connected to the holding cavity 200. After the garbage enters the holding cavity 200 with air through the dust suction port 210, the air then flows out through the outlet port 220. A screen can be provided between the outlet 220 and the holding chamber 200 to intercept the waste objects in the holding chamber 200. In this way, with the function of the fan 141, the dust suction port 210, the holding cavity 200, and the air outlet 220 form a channel through which the air flows, i.e. airflow passage 2000. At least two air outlets 220 may correspond to at least two airflow passages 2000. The at least two of the air outlets 220 are set in different directions so that the airflow through each other flows out of the dust box 20 in different directions accordingly.

As shown in FIG. 5 and FIG. 7, the number of fans 141 is at least one, corresponding to at least one air outlet 220. That is, the two fans 141 located at the two air outlets 220 correspondingly, fans 141 and air outlets 220 are correspond one by one. The fans 141 are used to extract air through the outlets 220, while creating airflow between the dust suction ports 210 to the outlets 220. The location and specific structure of the fans 141 and outlets 220 are not limited to the examples presented in the drawings. Of course, with the vacuum assembly 14 juxtaposed to the body 10, for example, at least two fans 141 can be set in the body 10 for connecting to the dust box 20. The at least two fans 141 are used to be provided in the airflow direction one to one between the at least two air outlets 220 and the at least two air exhaust ports 116 to connect the corresponding air outlets 220 and the corresponding air exhaust ports 116. The fan 141 connects to the first air duct member 142 and through the first air duct member 142 against the dust box 20 to connect to the corresponding air outlet 220. The fan 141 connects to the second air duct member 143 and connected to the corresponding exhaust port 116 through the second air duct member 143. The airflow formed by fan 141 can flow out through the corresponding air outlet 220 and then enter the first air duct member 142, flow through fan 141 to the second air duct member 143, and finally flow out through the air exhaust port 116.

By setting at least two airflow passages 2000 flowing in different directions out of the dust box 20, you can make the airflow in different airflow passages 2000 bifurcate from each other, can reduce the mutual interference of airflow between airflow passages 2000, so that the flow of airflow more smoothly, can effectively improve the suction power, and thus improve the cleaning effect.

By setting at least two fans 141 corresponding to at least two air outlets 220, each fan 141 connects to the air outlet 220 for air extraction and forms two air ducts inside the dust box 20, so that two air streams can work together to enhance the suction power, thus the air in the holding cavity 200 can be removed more quickly, and the suction port 210 can generate a stronger suction to suck in garbage. Compared to cleaning device with a single fan and a single duct, this embodiment can suck in debris with larger size, garbage with heavier mass, and can effectively improve the cleaning effect of cleaning device.

Referring to FIG. 8, the dust box 20 is further configured with an access cavity 201. The access cavity 201 and the holding cavity 200 are provided adjacent to each other in the thickness direction of the dust box 20, and the access cavity 201 is connected to the holding cavity 200. The access cavity 201 is connected to the air outlets 220. Therein, the access cavity 201 is located downstream of the airflow compared to the holding cavity 200 under the suction of the fan 141. In other words, when the fan 141 performs suction, air enters the holding cavity 200 from the dust suction port 210, then enters the access cavity 201 from the holding cavity 200, and is finally discharged through the fan 141, which is located downstream of the holding cavity 200 in the direction of airflow. The dust box 20 may be formed with a connecting hole 2211, which connects the access cavity 201 to the holding cavity 200. The connecting hole 2211 can be provided with a screen for filtering the airflow and intercepting the waste objects in the holding cavity 200.

By providing the access cavity 201 connected to the air outlet 220, the circulable space in the dust box 20 is increased. Further, it facilitates the arrangement and design of multiple air outlets 220, which in turn facilitates the setting of multiple fans 141 and connectors 142, which in turn form multiple air ducts. The fans 141 do not directly pump the air in the holding cavity 200, but through the access cavity 201, which is more conducive to the holding cavity 200 for waste deposition, further enhancing the suction power of air and cleaning effect. Moreover, by increasing the space available for airflow, the noise generated by airflow can be reduced.

At least two of the air outlets 220 may be opened on different outer walls of the dust box 20. The dust box 20 may have a top wall 20a, a bottom wall 20b, and a side wall 20c attached between the top wall 20a and the bottom wall 20b. The top wall 20a, the side walls 20c, and the bottom wall 20b are all the outer walls of the dust box 20. The sidewall 20c may comprise 1 or more subwalls. The number of subwalls can be specifically 3, 4 or more, connected to each other and located between the top wall 20a and the bottom wall 20b.

As shown in FIG. 8, at least two of the air outlets 220 may each be formed in the side wall 20c of the dust box 20. At least two of the air outlets 220 may be provided back-to-back on the side wall 20c, so that the back-to-back outlets 220 can flow out of the dust box 20 in different directions. At least two of the air outlets 220 may be opened on two subwalls of the side wall 20c that are set back-to-back, respectively. For example, the two air outlets 220 are arranged in a direction perpendicular to the thickness direction of the dust box 20 and is aligned substantially with the length direction of the dust suction port 210. The dust inlet 210 can be opened on the side wall 20c and spaced from the two air outlets 220. The dust inlet 210 is located between the two air outlets 220 and not on the same subwall as the two air outlets 220 on the side wall 20c. The suction port 210 and the two air outlets 220, respectively, is around the thickness direction of the dust box 20. The direction of the thickness of the dust box 20 is the direction of the top wall 20a and the bottom wall 20b to each other. Of course, part of the air outlet 220 can be located on the top wall 20a, and another part of the air outlet 220 can be located on the side wall 20c, so that at least two air outlets 220 can be located on different outer walls.

As shown in FIGS. 7 and 8, the angle between the planes in which each of the two air outlets 220 are set back-to-back is greater than 0° and less than 180°. Two of the air outlets 220 are set back-to-back, i.e. two of the air outlets opened on the side wall 20c are set back-to-back. The plane in which both are located may be the plane defined by the shape presented by the air outlet 220 on the outer surface of the side wall 20c of the dust box 20. In this case, further setting the angle between the planes in which they are located is greater than 0° and less than 180°, which can further optimize the airflow path, and thus the non-parallel setting is conducive to the avoidance of the relevant structures in the body 10 and facilitates the structural design.

By setting two air outlets 220 located on the opposite sides of the dust box 20, the dust suction port 210 is located between the two air outlets 220, thus the air duct formed inside the dust box 20 is more balanced, and the effective synergy between the two fans 141 is ensured, while the noise generated by the airflow is reduced.

At least two of the air outlets 220 can be opened on the same outer wall of the dust box 20, in which case, in order to reduce the mutual interference between the airflow in the dust box 20, the planes in which at least two of the air outlets 220 are located are not parallel to each other, i.e. the angle between the planes in which they are located is an angle greater than 0° and less than 180°. For example, at least two of the air outlets 220 are located on the side walls 20c of the dust box 20.

Referring to FIG. 9 and FIG. 10, an embodiment of a second exemplary structure of dust box 20 is described as follows.

The dust box 20 may comprise a first housing 21, a second housing 22, and a cover body 23. One side of the second housing 22 is provided over the first housing 21 to form the holding cavity 200. A recess 2210 is formed on the other side of the second housing 22, and a cover 23 is provided on the other side of the second housing 22 to form an access cavity 201. That is, the direction of the thickness of the dust box 20 is in the direction from the first housing 21 to the cover 23 and in an opposite direction. The holding cavity 200 and the access cavity 201 is spaced apart by the second housing 22 and adjacent to each other. The cover body 23 may have a top wall 20a of the dust box 20 and the first housing 21 may have a bottom wall 20b of the dust box 20, in other words, the bottom wall 20b of the dust box 20 is located in the first housing 21. The cover body 23 and/or the second housing 22 and/or the first housing 21 have a side wall 20c of the dust box 20, in other words, the side wall 20c of the dust box 20 is located in at least one of the first housing 21, the second housing 22 and the cover body 23. In some embodiments, the cover body 23 may also have the side walls 20c of the dust box 20.

The first housing 21 may, for example, be provided in a slotted structure, and may comprise, for example, a bottom wall 211 and a side wall 212 enclosed around the bottom wall 211, with the bottom wall 211 and the side wall 212 forming the slotted structure. The bottom plate 211 can serve as the bottom wall 20b of the dust box 20. When the second housing 22 is provided over the first housing 21, the slotted structure is capped to form the holding cavity 200. The dust suction port 210 can be opened on the side wall 212 of the first housing 21. The dust box 20 may also comprise a dust suction section 24 connected to the dust suction port 210 of the first housing 21. The dust suction section 24 is set at an angle on the side back from the dust suction port 210. For example, the angle between a plane on which the side of the suction section 24 is back from the suction port 210 and a plane on which the suction port 210 is located is greater than 0° and less than 90°, for example 45°. Of course, the dust suction port 210 may also be opened in the second housing 22, and it may also be that the first housing 21 and the second housing 22 are each partially opened with a dust suction port 210 to together form the dust suction port 210 when they are covered with each other.

As shown in FIG. 10, the second housing 22 comprises, for example, a top wall 221 and an extension 222. The extension 222 is attached to an edge region of the top wall 221 and may, for example, extend in the direction of the top wall 221 toward the side of the first housing 21. The second housing 22 may comprise two extensions 222 opposite each other. In such a case, the extension 222 and the side plate 212 of the first housing 21 may serve as the side wall 20c of the dust box 20. When the second housing 22 is covered on the first housing 21 for assembly fit, the top wall 221 is covered on the side wall 212 of the first housing 21, the extension 222 is provided opposite to the side wall 212 of the first housing 21, and part of the side wall 212 of the first housing 21 is sandwiched between the two extensions 222.

One side of the top wall 221 is provided over the side wall 212 of the first housing 21 so that the second housing 22 and the first housing 21 fit to form the holding cavity 200. As shown in FIG. 10, a recess 2210 is formed on the other side of the top wall 221. Each extension 222 has a space connecting to the recess 2210, and the side of the extension 222 back from the top wall 221 may form an air outlet 220, which is connected to the space. The cover 23 is provided on the other side of the top wall 221 so that the cover 23 and the second housing 22 cooperate to form the access cavity 201, and the air outlet 220 is connected to the access cavity 201. The air outlet 220 can also be opened on the first housing 21, or on both the first housing 21 and the second housing 22.

The first housing 21 and the second housing 22 can be connected by nesting, for example, with a nesting groove on the circumference of one side of the top wall 221 and a nesting edge on the circumference of the side wall 212 of the first housing 21. When the first housing 21 and the second housing 22 are closed, the nesting edge is embedded in the nesting groove for connection, so that the connection is tighter and can play a sealing role. The sealing effect can be strengthened by providing seals in the nesting grooves. In this embodiment, the second housing 22 and the cover 13 can be connected by nesting, for example by the fit of a nesting slot and a nesting edge.

As shown in FIG. 10, the second housing 22 may be provided with a connecting hole 2211, which runs through one side of the second housing 22 to the other side of the second housing 22. The connecting hole 2211 may be provided in and through the top wall 221 to allow connection between the access cavity 201 and the holding cavity 200.

The dust box 20 may comprise a screen assembly, and the screen assembly may comprise at least one screen. The filter assembly comprises a first filter 25 and a second filter 26. The filtration accuracy of the second filter 26 is less than that of the first filter 25. In other words, the second filter 26 can act as a coarse filter (primary filter) and the first filter 25 as a fine filter (high efficiency filter). For example, for both the first filter 25 and the second filter 26, the mesh size of the second filter 26 can be larger than the mesh size of the first filter 25. For example, the second filter 26 can have 4 holes, the first filter 25 can have 100 holes, the overall size of the second filter 26 and the overall size of the first filter 25 are comparable to the size of the connecting holes 2211, so that the size of holes of the second filter 26 is larger than the size of holes of the first filter 25. As shown in FIG. 25 and FIG. 8, the first filter 15 can be a folded filter, and the filter element of the first filter 15 is, for example, in a continuous Z-shaped folded shape.

The second filter 26 and the first filter 25 can be provided in the second housing 22 and cover the connecting holes 2211 in turn. The second housing 22 is provided with a cross-shaped bracket in the connecting hole 2211, but of course it can also be other shapes (as shown in FIG not labeled), the bracket can be used to carry the second filter 26 and the first filter 25 to stably support them. With the fans 141, objects such as garbage and debris enter the holding cavity 200 with the airflow from the dust suction port 210. The filtered air enters the access cavity 201 and is extracted through the outlet 220.

The combination setting the first housing 21, the second housing 22, and the cover 23 makes the dust box 20 stable in structure, and easy to disassemble, which facilitate the cleaning and maintenance of the dust box 20. The combination setting of the dust box 20 facilitates makes the first housing 21 and the second housing 22 cooperate to form the holding cavity 200, and the second housing 22 and the cover 23 cooperate to form the access cavity 201, thus making the holding cavity 200 better to hold debris, garbage and other objects, and at the same time making the passage cavity 201 more quickly to discharge the air from the holding cavity 200 and speed up the airflow rate.

Further, the multi-stage filter system consisted by the second filter 26 and the first filter 25 can realize multiple filters for airflow, so that debris, dust and other waste objects can be effectively filtered and stored in the holding cavity 200, to achieve good cleaning effect. The number of connecting holes 2211 can also be multiple, an example of which is given later in this embodiment.

As shown in FIG. 10, the cover 23 is used to cover the second housing 22 and mates with the second housing 22 to form the access cavity 201. In this embodiment, the cover 23 and the second housing 22 may be sealed together by a seal (shown in FIG. 10). As shown in FIG. 10, the cover 23 may comprise a body 231 and a top cover 232. The body 231 is formed with a mounting hole 230 corresponding to the location of the first filter 25, and the mounting hole 230 connects to the access cavity 201. When the body 231 is provided on the side wall 212 on the first housing 21, it allows the first filter 25 and the second filter 26 to be exposed. The upper cover 232 is attached to the body 231 in a rotatable manner. For example, one side of the upper cover 232 is rotated by a pivot to the inner wall of the mounting hole 230 enclosed by the body 231. The upper cover 232 can be closed by turning the mounting holes 230, or opening the mounting holes 230 so that the first filter 25 and the second filter 26 are exposed. The size of the mounting holes 230 is greater than or equal to the size of the connecting holes 2211. In other embodiments, the size of the mounting holes 230 can be smaller than the size of the connecting holes 2211.

Further, the top cover 232 can be fitted to the mounting holes 230 by a seal adapted to the shape of the mounting holes 230 to improve the sealing effect of the dust box 20 and to ensure effective suction of the dust suction port 210 and effective flow of airflow inside the dust box 20.

By providing a rotatable upper cover 232 with mounting holes 230, the second filter 26 and the first filter 25 can be easily removed or cleaned, and the mounting holes 230 can be easily observed inside the dust box 20 for inspection and repair.

For the first exemplary structure of the dust box 20 described above, the dust box 20 may be further provided with a snap assembly 30 to facilitate snap connection of the dust box 20 to other devices. One example of the snap assembly 30 of the dust box is described specifically below.

As shown in FIG. 10, the snap assembly 30 can be used to make snap connections to other devices, thereby allowing the dust box assembly 20 and other devices to be assembled for use. Other devices are, for example, the body 10 of the cleaning device 10.

The snap assembly 30 may comprise a press portion 31, a resilient portion 33, and a snap bar 32. The press portion 31 connects to the snap bar 32. For example, the snap bar 32 may be a single unit, with the press portion 31 attached to the central area between the two ends of the snap bar 32. The snap bar 32 is provided with snap sections 321 protruding from each end of the snap bar 32. As shown in FIG. the number of snap bars 32 can be two, respectively connected to the press section 31 on the opposite sides, each snap bar 32 is connected to the press portion 31 at one end, and the other end extends in the direction away from the press section 31 and is provided with a snap section 321. When the dust box assembly 20 of this embodiment is snap-fitted with other devices, for example, there are snap slots correspondingly provided on the other devices, and the snap portion 321 is snap-connected to the corresponding snap slot.

The resilient portion 33 can be used to resiliently support the press portion 31. The press portion 31 is resiliently supported on the dust box 20 by the resilient portion 33. As shown in FIG. 10, the first housing 21 has a first placement slot 2110 corresponding to a notch 2213 of the second housing 22, the first placement slot 2110 extends in the same direction as the side wall 212 of the first housing 21, and the first placement slot 2110 may have a portion of the side wall 212 as its slot wall, i.e., the opening direction of the first placement slot 2110 faces the cover 23. The press portion 31 has a second placement slot 310, which extends in the opposite or substantially opposite direction to the projection of the snap portion 321. The resilient portion 33 may be a spring, one end of which extends into the first placement slot 2110 so as to be supported in the first placement slot 2110, and the other end of which may be exposed outside the first placement slot 2110. The other end of the resilient portion 33 is supported in the second placement slot 310. The second placement slot 310 may be configured to be sized to accommodate the press portion 31 to partially fit into the second placement slot 310 when the press portion 31 is pressed.

As shown in FIG. 10, the other side of the second housing 22 may be further formed with a bar-holding slot 2212 spaced from each other with a recess 2210. The snap bar 32 may be accommodated in the bar-holding slot 2212. When the snap bar 32 is accommodated in the bar-holding slot 2212, the second housing 22 has a notch 2213 corresponding to the position of the pressing portion 31. Wherein the snap bar 32 is accommodated in the bar-holding slot 2212 with the snap portion 321 extending toward the cover 13.

In this embodiment, when the second housing 22 and the cover 23 are closed, the bar-holding slot 2212 and the access cavity 201 may be isolated from each other and not connected to each other to ensure that the suction power of the dust suction port 210 makes it better to suck up garbage. Snap holes are provided on the body 231 corresponding to the location of the snap portion 321. When the pressing portion 31 is not pressed, the elastic portion 33 is resiliently supported between the first placement slot 2110 and the second placement slot 310, the snap bar 32 is held against the top, and the snap portion 321 can protrude out of the snap hole to allow snap connections to be made when assembled with other devices. When the pressing portion 31 is pressed, the elastic portion 33 is further elastically compressed, and the pressing part 31 can move toward a bottom wall 211, for example, into the first placement slot 2110, and the snap lever 32 then moves away from the cover 23 so that the snap portion 321 does not protrude from the snap hole of the cover 23, so that it can be decoupled. The snap bar 32 can be limited by the bar-holding slot 2212, thereby limiting the pressing portion 31 from being pressed and moving further.

Both the first placement slot 2110 and the second placement slot 310 can be provided with positioning posts to position and secure the resilient portion 33, for example, with the ends of the spring on each of the positioning posts.

Referring to FIG. 11 and FIG. 12, an embodiment of a second exemplary structure of dust box 20 is described as follows. The first housing 21a is provided in the form of a plate. The second housing 22a comprises a top wall 221a and a side wall 222a enclosing the outer perimeter of the top wall 221a. A portion of the side wall 222a extends from the top wall 221a toward the first housing 21a, and that portion of the top wall 221a and the side wall 222a enclose a slotted structure. The other portion of the side wall 222a extends from the top wall 221a toward a cover 23a. When the second housing 22a is provided on the first housing 21a, the top wall 221a, the side walls 222a and the bottom wall 211a form the holding cavity 200. The first housing 21a and the second housing 22a can be hermetically closed by suitable seals.

The dust suction port 210 is opened on the side wall 222a of the second housing 22a. The dust box 20 may also comprise a dust suction section 24a, which may be provided on the side wall 222a of the second housing 22a to connect to the dust suction port 210 of the second housing 22a, with the dust suction section 24a set at an angle on the side back from the dust suction port 210. For example, the angle between the plane on the side of the suction section 24a that is away from the suction port 210 and the plane on which the suction port 210 is located is greater than 0° and less than 90°, optionally 45°. Optionally, the dust suction port 24a is removably provided in the second housing 22a. The dust suction port 24a is rotatably provided in the second housing 22a, e.g. the dust suction port 24a is rotatably connected to the second housing 22a on one side of its length (e.g. it can be a rotational connection by a pivot), and the dust suction port 24a is snap connected to the second housing 22a on the other side of its length. The length direction of the dust suction section 24a is the same or substantially the same as the length direction of the dust suction port 210. After the dust suction section 24a and the second housing 22a are disconnected, the other side of the dust suction section 24a in its length direction can be rotated around the axis of rotation of the side of the dust suction section 24a in its length direction, so that the dust suction port 210 can be exposed for easy observation, cleaning, repair and other operations.

The side of the top wall 221a back from the first housing 21a is enclosed with another part of the side wall 222a to form a recess 2210a, and the recess 2210a and the slotted structure adjacent to the side of the first shell 21a are located on each side of the top wall 221a. The cover 23a is provided over the second housing 22a to cooperate to form the access cavity 201. The second housing 22a and the cover 23a can be hermetically closed by a suitable seal.

The second housing 22a further comprises extensions 223a, the extensions 223a is located on opposite sides of the second housing 22a. The extension 223a has a space where a portion of the side wall 222a of the second housing 22a can serve as the outer wall of the extension 223a (toward the outside of the dust box 20), and of course as the inner wall of the extension 223a. When the first housing 21a and the second housing 22a are capped together, the space of the extension 223a is not directly connected to the holding cavity 200, but to the access cavity 201. The extension 223a is provided with an air outlet 220, and the air outlet 220, for example, is provided on the outer side wall of the extension 223a, for example, as part of the outer side wall 222a of the extension 223a is provided with this air outlet 220, connecting to the space of the extension 223a.

The second housing 22a may be provided with a connecting hole 2211a, and the connecting hole 2211a may run through the top wall 221a. In this embodiment, the number of connecting holes 2211a is multiple and the shape may be, for example, circular, oval or square, etc. The connecting hole 2211a is used to connect the access cavity 201 to the holding cavity 200.

The filter assembly comprises a first filter 25a and a second filter 26a. The filtration accuracy of the second filter 26a is less than that of the first filter 25a. In other words, the second filter 26a can be used as a coarse filter (primary filter) and the first filter 25a as a fine filter (high efficiency filter). For example, for both the first filter 26a and the second filter 25a, the mesh size of the second filter 26a can be larger than the mesh size of the first filter 25a. For example, the second filter 26a can have 4 holes, the first filter 25a can have 100 holes, the overall size of the second filter 26a and the overall size of the first filter 25a are comparable to the size of the connecting holes 1211, so that the size of holes of the second filter 26a is larger than the size of holes of the first filter 25a. Of course, the mesh surface of the first filter 25a can be a folded filter.

The second filter 26a is provided in the second housing 22a and can be located inside the connecting hole 2211a or outside the connecting hole 2211a while covering the connecting hole 2211a. The second filter 26a may be a monolithic and cover a plurality of connecting holes 2211a. The second filter 26a may also be more than one and correspondingly located in each connecting hole 2211a. The first filter 25a can be provided in the space of the extension 223a to cover the air outlet 220 and filter the airflow coming out of the air outlet 220. The number of second filters 26a is, for example, at least two, corresponding to at least two air outlets 220, i.e. one second filter 26a is provided for each air outlet 220. Of course, in some embodiments, instead of a screen in the connecting hole 2211a, a second screen 26a can be provided in the air outlet 220.

By providing the first filter 25a in at least two air outlets 220 correspondingly to form a filter system with multiple high-efficiency filters, so that multiple first filters 25a can filter the airflow flowing through at least two air outlets 220 separately, which can improve the filtering effect and filtering efficiency and can further enhance the speed of airflow. Further, the plurality of connecting holes 2211a can increase the area through which the airflow passes and avoid the problem of poor airflow caused by the accumulation of debris in the holding cavity 200.

The second exemplary structure of the dust box 20 described above uses the same construction of the snap assembly 30 as the first exemplary structure of the dust box 20. Of course, the second embodiment of the dust box 20 can also be provided with a snap assembly 30 different from the embodiment, and the different structure of snap assembly 30 is described specifically below.

Referring to FIG. 11 and FIG. 12, the snap assembly 30 comprises a pressing portion 31a, a snap bar 32a, and a resilient portion 33a, the pressing portion 31a connects to the snap bar 32a. For example, the snap bar 32a may be a single unit, such as the pressing portion 31a attached to the central area between the two ends of the snap bar 32a. The snap bar 32a is provided with snap sections 321a protruding from each end of the snap bar 32a. The number of snap bars 32a can be two, respectively connected to the press section 31 on the opposite sides, each snap bar 32a is connected to the press portion 31a at one end, and the other end extends in the direction away from the press section 31a and is provided with a snap portion 321a. The resilient portion 33a is provided at the pressing portion 31a, and the resilient portion 33a is able to rotate with respect to the dust box 20. The pressing portion 31a is able to rotate relative to the dust box 20 by means of the elastic portion 33a.

As shown in FIG. 11, the other side of the second housing 22a may be further formed with a rod-holding slot 2212a spaced from each other with the recess 2210a. When the second housing 22a and the cover 23a are closed, the bar-holding slot 2212a and the access cavity 201 may be isolated from each other and not connected to each other to ensure that the suction power of the dust suction port 210 makes it better to suck up garbage. As shown in FIG. 12, the snap bar 32a and the press portion 31a may be accommodated in the bar-holding lot 2212a. For example, part of the bar-holding slot 2212a corresponding to the snap bar 32a fits the profile of the snap bar 32a, and part of the bar-holding slot 2212a corresponding to the pressing portion 31a fits the profile of the pressing portion 31a. When the snap bar 32a and the pressing portion 31a are accommodated in the bar-holding slot 2212a, the elastic portion 33a deforms elastically as the pressings portion 31a is pressed.

The resilient portion 33a comprises, for example, a rotating rod 331a, a torsion spring 332a, and an attachment body 333a, which is fixed to the pressing portion 31a. A torsion spring placement slot (not marked) is opened in the connection body 333a, for example in the central area with the connection body 333a. The rotating rod 331a is set along the length of the connection body 333a through the connection body 333a, specifically through one end of the connection body 333a, the torsion spring placement slot, and the other end of the connection body 333a, while protruding from both ends of the connection body 333a. The torsion spring 332a is provided on the portion of the rotating rod 331a that is located in the torsion spring placement slot. Other springs can be used instead of torsion springs 332a.

The ends of the rotating rod 331a can be set directly rotating in the second housing 22a. The rotating rod 331a may also be provided indirectly rotating in the second housing 22a. For example, as shown in FIG. 11 and FIG. 12, the snap assembly 30 may also comprise a fixed portion 34a, which has a slot for the attachment body, and the fixed portion 34a has holes on each side of the wall of the attachment body, and the portion of the rotating rod 331a projecting from the ends of the attachment body 333a is inserted into the holes, enabling a rotating connection. With the pressing portion 31a and the snap bar 32a, placed in the bar-holding slot 2212a, the fixing portion 34a is fixedly connected to the second housing 22a, for example by screws. The ends of the torsion spring 332a can be limited by the second housing 22a and the connector 333a, respectively, to allow for elastic deformation during relative rotation.

When the snap rod 32a is accommodated in the bar-holding slot 2212a, the snap portion 321a extends toward the cover 23a. When the pressing portion 31a is pressed in the direction of the bottom wall 211a, the pressing portion 31a rotates along the axis of the rotating rod 331a, and the torsion spring 332a can further undergo elastic deformation, so that the snap portion 321a can be displaced and move in the direction of the bottom wall 211a. When the pressure on the pressing portion 31a disappears, the torsion spring 332a causes the pressed portion 31a to rotate in the opposite direction (relative to the pressed state) due to the elastic return force, driving the snap portion 321a to move in the opposite direction away from the bottom wall 211a.

Snap holes can be provided in the body of the cover 23a corresponding to the location of the snap portion 321a. When the pressing portion 31a is not pressed, the snap portion 321a protrudes out of the snap hole, so that the snap connection can be made. When the pressing portion 31a is pressed and is subjected to pressure in the direction of the bottom wall 211a, the pressing portion 31a is rotated along the axis of the rotation rod 331a in the direction of the bottom wall 211a, causing the snap part 321a to be displaced in the direction of the bottom wall 211a, so that the snap hole of the cover 23a does not protrude out and the snap process is facilitated. As the pressed portion 31a is pressed further and rotated, the snap bar 32a can be limited by the bar-holding slot 2212a, thereby limiting the pressed portion 31a from being pressed and moving further.

The flexible rotating snap assembly 30 makes the snap easy connected and more stable, and its structure is further simplified compared to the previous structure.

Referring to FIG. 13 and FIG. 15, an embodiment of a second exemplary structure of dust box 20 is described as follows. As shown in FIG. 7 and FIG. 14, the dust box 20 comprises a first housing 21b, a second housing 22b, and a cover 23b. The second housing 22b is provided over the first housing 21b to enclose the holding cavity 200, and the cover 23b is provided over the second housing 22b to enclose the access cavity 201.

Optionally, the dust box 20 can also comprise a rotating member 27b, and the cover 23b can achieve a rotating connection with the first housing 21b through the rotating member 27b, so that the first housing 21b and the cover 23b can close or open with each other. When the first housing 21b and the cover 23b are opened to each other, they can make the second housing 22b exposed, which can facilitate the cleaning and maintenance of the first filter 15b and the second filter 16b, etc. The rotating member 27b comprises a rotating shaft 271b, a first shaft receiving portion 272b provided in the first housing 21b, and a second shaft receiving portion 273b provided in the cover 23b, and the ends of the rotating shaft 271b are embedded in the first shaft receiving portion 272b and the second shaft receiving portion 273b, respectively, to enable relative rotation between the first housing 21b and the cover 23b.

As shown in FIG. 14, the first housing 21b, for example, is provided in a slotted shape, and may specifically comprise a bottom wall 211b and a side wall 212b enclosed around the bottom wall 211b, with the bottom wall 211b and the side wall 212b enclosed in a slotted structure. When the second housing 22b is capped on the first housing 21b, the slotted structure of the first housing 21b can be capped into the holding cavity 200. The first housing 21b may, for example, form a dust suction port 210 on the side wall 212b, which is connected to the slotted structure, i.e. to the holding cavity 200.

The second housing 22b may be substantially plate shaped. At least two connecting holes 2211b may be provided in the second housing 22b, the connecting holes 2211b running through one side of the second housing 22b to the other side of the second housing 22b. The connecting hole 2211b connects to the holding cavity 200. The installation of at least two connecting holes 2211b enables the airflow entering the dust suction port 110 to form a plurality of flow directions, so that the inhaled waste does not accumulate only adjacent to the dust suction port 110, but can be scattered and accumulated with different air ducts, which can improve the space utilization of the dust box 20.

In some implementations, as shown in FIG. 15, the two connecting holes 2211b may be arranged in a direction substantially along the length of the second housing 22b, so that the two connecting holes 2211b are spaced apart and located in the area adjacent to the two ends of the second housing 22b in its length direction (the direction of the line connecting the two ends is substantially the length direction of the second housing 22b), which enables the garbage objects to be drawn into the When the dust box 20 is sucked into the dust box, it may follow the airflow and accumulate on both sides, improving the situation that the dust objects are concentrated in the area adjacent to the dust suction port 210, reducing the phenomenon of blocking the dust suction port 210, and improving the space utilization of the dust box 20. Further, the two connecting holes 2211b may be positioned adjacent to the side of the first housing 21b opposite the dust suction port 210 (the side away from the vacuum port 210), and the line between the centers of the two connecting holes 2211b and the center of the dust suction port 210 is triangular, such as an isosceles triangle. The second housing 22b can also be the one shown in the first embodiment of the dust box 20.

As shown in FIG. 15, the dust box 20 is provided with at least two connecting holes 2211b spaced from each other. There are two connecting holes 2211b in this embodiment, and a projection point D of a center C of the dust suction port 210 on the line connecting a center A of one connecting hole 2211b and a center B of another connecting hole 2211b is located between the centers A, B of those two connecting holes 2211b. Equivalently, a plumb line is made across the center C of the dust suction port 210 for the line connecting the centers A, B of the two connecting holes 2211b, and the intersection D where the plumb line intersects the lines connecting the centers A, B of the two connecting holes 2211b is located between the centers A, B of the two connecting holes 2211b. The center C of the dust suction port 210 is the geometric center of a geometric shape that is the same as and matches the shape of the dust suction port 210 or the center of gravity of a homogeneous object that is the same as and matches the shape of the dust suction port 210. Similarly, the centers A and B of the connecting holes 2211b are the geometric centers of geometric shapes that are identical and match the shape of the connecting holes 2211b, or the centers of gravity of homogeneous objects that are identical and match the shape of the connecting holes 2211b.

As shown in FIG. 15, the projection point D of the center C of the dust suction port 210 on the line connecting the center A of the one connecting hole 2211b and the center B of the other connecting hole 2211b is located between A and B, so that the airflow entering the dust suction port 210 can be diverted to both sides of the center C, for example, to one connecting hole 2211b and the other connecting hole 2211b and the other connecting hole 2211b. This improves the flow direction of the airflow and allows the inhaled objects to accumulate from both sides, improving the space utilization of the dust box 20.

The dust box assembly 20 may comprise at least two filter assemblies, each for filtering the airflow from one connecting hole 2211b. Each screen assembly comprises a first filter 25b, and the number of first filters 25b and connecting holes 2211b may correspond to each other. The first filter 25b may be provided within the connecting hole 2211b to allow for filtration of the airflow, for example, it may be partially accommodated within the connecting hole 2211b. Of course, the first filter 25b can be provided on the side of the second housing 22b toward the cover 23b and correspondingly cover the connecting holes 2211b so that the airflow can be filtered. Optionally, each filter assembly may also comprise a second filter 26b, with the first filter 25b having a greater filtration accuracy than the second filter 26b. The second filter 26b can be provided inside the connecting hole 2211b, and the first filter 25b covers the second screen 26b, with the first filter 25b being closer to the cover 23b than the second filter 26b. In other words, the first filter 25b is located downstream of the airflow compared to the second filter 26b, and the airflow passes through the second filter 26b and the first filter 25b in turn for double filtration.

By setting at least two connecting holes 2211b, corresponding to the setting of at least two first filters 25b, the airflow entering the holding cavity 200 through the dust suction port 210 can form at least two ducts, thus changing the duct flow direction and optimizing the flow of airflow, so that the garbage being sucked into the dust box 20 can be stored more effectively, thus being able to improve the space utilization of the dust box 20, making the filtering of the dust box 20 Better efficiency, higher cleaning efficiency, so as to enhance the suction power of the dust suction port 210.

In one embodiment, as shown in FIG. 13, the first filter 25b is set at an angle when partially accommodated in the connecting hole 2211b. For example, the first filter 25b can be tilted in the direction of the air outlet 220, so that the airflow filtered by the first filter 25b can be quickly delivered to the air outlet 220. There is an angle between a side of the first filter 25b adjacent to the cover 23b and a side of the second housing 22b toward the cover 23b, such as an angle greater than 90° and less than 180°. In this way, it facilitates airflow to be able to flow out from the air outlet 220 on the side wall of the cover body 23b, enhancing the smoothness of airflow.

As shown in FIG. 13 and FIG. 14, The cover 23b is provided over the second housing 22b to enclose the access cavity 201. For example, the cover 23b is formed with a recess (not shown) on the side facing the second housing 22b, and the cover 23b and the second housing 22b close together and enclose the recess to form the access cavity 201. Of course, the structure of the cover 23b and the second housing 22b can also be as the cover 23 and the second housing 22 in the first embodiment of the dust box 20.

The cover 23b comprises a body 231b and an upper cover 231b. The cover body 231b may be provided with a mounting hole 230b corresponding to the connecting hole 2211b. The upper screen cover 231b is used to cover the corresponding mounting holes 230b. The air outlet 220 may be opened in the side wall of the cover body 231b, the side wall of the cover body 231 being part of the side wall 20c of the dust box 20. The outlet port 220 may be spaced from the dust inlet 210 in the direction of the thickness of the dust box 20, and both may be oriented in approximately the same direction. The connecting hole 230b connects to the access cavity 201. When the second housing 22b is the one in the first embodiment of the dust box 20, the air outlet 220 can also be opened in the second housing 22. The cover 23 may also be provided with snap holes.

When the body 231b is provided on the side wall 212b on the first housing 21b, the second filter 26b and the first filter 25b can be left exposed. The upper cover 232b is attached to the body 231b in a rotatable manner. For example, one side of the top cover 232b is rotated by a rotating axis to the inner wall of the mounting hole 230b enclosed by the body 231b. The upper cover 232b can be closed by turning the mounting holes 230b, or opening the mounting holes 230b so that the second filter 26b and the first filter 25b are exposed. The mounting holes 230b are provided opposite to the connecting holes 2211b and the size of the mounting holes 230b is greater than or equal to the size of the connecting holes 2211b. In other embodiments, the size of the mounting hole 230b can be smaller than the size of the connecting hole 2211b.

Further, the top cover 232b can be fitted to the mounting holes 230b by means of a seal adapted to the shape of the mounting holes 230b (shown in FIG. 10, but not labeled) to improve the sealing effect of the dust box 20 and to ensure effective suction of the dust suction port 210 and effective airflow inside the dust box 20. By providing a rotatable top cover 232b with mounting holes 230b, the second filter 26b and the first filter 25b can be easily removed or cleaned, and the mounting holes 230b can be easily observed inside the dust box 20 for inspection and repair.

As shown in FIG. 14, a notch 2213b is formed on one edge of the second housing 22b away from the dust suction port 210, and a side of the second housing 22b toward the cover 23b is provided with a projection 2212b, with the projection 2212b surrounding the notch 2213b. The cover 23b is formed with a mating slot (not shown) on the side toward the second housing 22b, and the shape of the mating slot is adapted to the shape of the projection 2212b, and when the cover 23b is capped to close the second housing 22b, the cover 23b projection 2212b can be embedded in the mating slot to allow the access cavity 201 and the notch 2213b to be spaced apart. As shown in FIG. 8, the first housing 21b has a first placement slot 2110b with the first placement slot 2110b opening oriented toward the cover 23b, corresponding to the notch 1213b of the second housing 22b. When the second housing 22b is provided on the first housing 21b, the holding cavity 200 and the first placement slot 2110b are spaced apart and not connected to each other.

In the third embodiment of the dust box 20 described above, the dust box 20 can be further provided with a snap assembly 30 to facilitate snap connection of the dust box 20 to other devices. A further example of the snap assembly 30 of the dust box 20 is described specifically below.

The snap assembly 30 may comprise a pressing portion 31b, a snap portion 321b protruding from the pressing portion 31b, and a resilient portion 33b. Snap portion 321b is used for snap connection to the snap slot of the device body. The elastic portion 33b is used to support the pressing portion 31b. The pressing portion 31b is formed with a second placement slot 310b, and the shape of the pressing portion 31b is adapted to the shape of the notch 2213b, for example. The opening direction of the second placement slot 310b is opposite to the projection direction of the snap portion 321b. The resilient portion 33b is, for example, a resilient member such as a spring, and one end of the resilient portion 33b extends into the second placement slot 310b and the other end extends into the first placement slot 2110b. When the first housing 21b, second housing 22b and cover 13b are composed together, the other end of the resilient portion 33b is positioned in the first placement slot 2110b to support the pressing portion 31b and the snap portion 321b. The snap portion 321b corresponds to the snap hole of the cover 23b. The first placement slot 2110b is provided with sliding slots on opposite sides of the wall 212b, and the corresponding sides of the pressing portion 31b are provided with sliding rails, and the sliding rails are embedded in the slots to enable the pressing portion 31b to slide in the first placement slot 2110b.

When the pressing portion 31b is not pressed, the resilient portion 33b is resiliently supported between the first placement slot 2110b and the second placement slot 310b, and the pressing portion 31b is held against the top so that the snap portion 321b can protrude out of the snap hole to allow for a snap connection with the device body when assembled. When the pressing portion 31b is not pressed, the elastic portion 33b is further elastically compressed, and the pressing portion 31b is able to move toward the first housing 21b, such as moving into the first placement slot 2110b, and the snap portion 321b moves away from the cover 23b so that the snap portion 321b does not protrude from the clamping hole of the cover 23b, so that it can be unclamped.

The device body can be used in conjunction with the dust box assembly 1 of this embodiment, for example, the housing of the device body has a snap slot opened in the housing for snap connection with the snap portion 321 (321a, 321b). When pressure is applied to the pressing portions 31 (31a, 31b), the elastic deformation of the elastic portions 33 (33a, 33b) enables the pressing portions 31 (31a, 31b) to drive the snap portions 321 (321a, 321b) away from the snap slot to enable the snap portions 321 (321a, 321b) to be decoupled from the snap slot. When the pressing portions 31 (31a, 31b) is not pressed, the elastic recovery force of the elastic part 33 (33a, 33b) can cause the pressing portions 31 (31a, 31b) to drive the snap portions 321 (321a, 321b) to move close to the snap slot or remain close to the snap slot, so that the snap portions 321 (321a, 321b) can be snap connected to the snap slot.

This embodiment provides the snap assembly 30 to facilitate the connection of the body 10. In some embodiments, the snap assembly 30 comprises two snap portions 321 (321a), which can make the snap connection between the dust box 20 and the body 10 of this embodiment tighter and enhance the fixation effect of both structures, and the setting of two snap portions 321 (321a) can further limit the relative displacement of the dust box 20 and the shell of the body 10 to ensure the stability of the structure.

For the above third exemplary structure of the dust box 20, the setting position of the connecting hole 2211b can be adjusted by specifically designing the structure of the first housing 21b, the second housing 22b, and the third housing 13b, which in turn can also have the following exemplary cases.

As shown in FIG. 16, in one embodiment, the second housing 22b comprises a top wall and a side wall, while the first housing 21b is provided in the form of a plate, the third housing 13b is provided over the first housing 21b, and the second housing 22b separates the holding cavity 200 from the access cavity 201. At least two of the connecting holes 2211b are partially opened in the top wall and partially opened in the side wall, both connecting to the holding cavity 200 and the access cavity 201. Of course, at least two connecting holes can also be opened on the opposite sides of the second housing 22b, respectively.

As shown in FIG. 11, in another embodiment, the first housing 21b comprises a bottom wall and a side wall, and the second housing 22b is provided over the side wall of the first housing 11. The third housing 13b is provided on the bottom wall of the first housing 21b. The second housing 22b separates the holding cavity 200 from the access cavity 201. At least one of the at least two connecting holes 2211b is opened in the second housing 22b and at least the other is opened in the side wall of the first housing 21b, and both are connected to the holding cavity 200 and the access cavity 201. Of course, at least two connecting holes 2211b can also be opened on opposite sides of the wall of the first housing 21b, respectively.

In the various structures described previously or in the dust box 20 not mentioned in this embodiment, in order for the fan 141 and the air outlet 220 to better fit together and facilitate their connection and adaptation to the structural design of the dust box 20, etc., refer to FIGS. 18 and 19, a first duct member 142 may be provided between the fan 141 and the corresponding air outlet 220. The number of air duct members 142 is at least two. The fans 141, first air duct members 142 and air outlets 220 correspond to each other one by one. The fan 141 is connected to the corresponding first air duct members 142, and is connected to the corresponding air outlet 220 through the corresponding first air duct members 142. The fan 141 is connected to the corresponding air outlet 220 through the corresponding first air duct members 142, i.e., it is possible to extract air from the air outlet 220 inside the holding cavity 200 through the first air duct members 142. A first air duct member 142 and a fan 141 can be used as a set of dust suction assembly 14. The dust box 20 of this embodiment can be provided with a plurality of air outlets 220 and a plurality of dust suction assembly 14 correspondingly.

As shown in FIG. 19, the dust suction assembly 14 of this embodiment may further comprise a vibration dampening pad 144, and the other side of the connector 142 with the second vent 1422 is formed with a holding slot 1423, the holding slot 1423 is connected to the second vent 1422, the shape of the holding slot 1423 is adapted to the shape of the vibration dampening pad 144, the vibration dampening pad 144 is placed in the holding slot and located between the fan 141 and the connector 142.

By setting the housing slot 1423 to accommodate the vibration dampening pad 144, the fan 141 through the vibration dampening pad 144 set on the first air duct member 142, can make effective reduce the vibration of the fan 141, so as to avoid impact of vibration of the fan 141 on the first air duct member 142 and ensure the sealing effect, thereby the air extraction effect of the fan 141 can be ensured.

The fan 141, for example, is an extractor fan or blower, both of which can achieve the role of extracting air. The fan 141 is provided on the other side of the corresponding first air duct member 142 and is connected to the second vent 1422. When the fan 141 is in operation, the airflow is pumped out by the fan 141 through the suction portion 210, the holding cavity 200, the access cavity 201, the space of the extension 222, the outlet 220, and the first and second vents 1421 and 1422, in that order.

In this embodiment, the connector 142, when connected to the corresponding air outlet 220, can be sealed by a seal 1425, for example a sealing rubber ring. That is, the seal 1425 may be provided at the connection of the first vent 1421 and the outlet 220 to seal the connection.

In order to further enhance the speed of airflow and to optimize the structure, this embodiment provides an embodiment of the first air duct member 142 as follows.

Referring to FIG. 20, the profile of the first air duct member 142 of this embodiment may be irregularly shaped. One side of each first air duct member 142 may be formed with a first vent 1421, which is used to connect to the air outlet 220 corresponding to the first air duct member 142, and a second vent 1422 connected to the first vent 1421 is formed on the other side of the first air duct member 142. The fan 141 is provided on the other side of the corresponding first air duct members 142 and is connected to the second vent 1422. The shape of the first vent 1421 can be adapted to the shape of the air outlet 220 or can be designed on a case-by-case basis. The shape of the first vent 1421 can be adapted to the shape of the air outlet 220 and is not limited to that shown in FIGS. 19 and 20. The first vent 1421 can be shaped specifically according to the outlet 220 of the dust box 20 so that the two are adapted to each other. In this embodiment, it does not limit the shape of the first air duct member 142, the first vent 1421, and similarly the second vent 1422.

For example, the first vent 1421 on one side of the first air duct member 142 and the second vent 1422 on the other side of the first air duct member 142 can be staggered, for example, after the first air duct member 142 is assembled with the dust box 20, the projection of the first vent 1421 on the plane where the air outlet 220 is located and the projection of the second vent 1422 on the plane where the air outlet 220 is located can partially overlap or completely not overlap. The interior of the first air duct member 142 has spaces which have a first vent 1421 and a second vent 1422, respectively. In this way, the path of the airflow within the first air duct member 142 may be curved.

In this embodiment, the angle between the plane in which the first vent 1421 is located and the plane in which the second vent 1422 is located is greater than 0° and less than 180°. The angle between the plane in which the first vent 1421 is located and the plane in which the second vent 1422 is located is greater than or equal to 20° and less than 100°. The angle between the plane in which the first vent 1421 is located and the plane in which the second vent 1422 is located is greater than or equal to 30° and less than or equal to 90°. The angle between the plane in which the first vent 1421 is located and the plane in which the second vent 1422 is located is greater than or equal to 40° and less than or equal to 60°. The angle between the plane in which the first vent 1421 is located and the plane in which the second vent 1422 is located is 46°.

Referring to FIG. 21, in another embodiment of the first air duct member 142, the main difference from the above embodiments is the provision of a spacer 1424 within the first vent 1421 of the first air duct member 142, which has one or more spaced through holes. The first air duct member 142 is connected between the fan 141 and the air outlet 220, and the through hole can connect the second vent 1422 to the air outlet 220. By further providing the spacer 1424, it can be used to block foreign objects from entering the fan 141 through the first vent 1421 and causing interference or damage to the fan 141.

This embodiment can optimize the air duct of the whole dust box assembly 20 by setting the ventilation structure of the first air duct member 142 and the angle between the plane where the first vent 1421 is located and the plane where the second vent 1422 is located, so that the air flow is faster. Moreover, the angle between the plane where the first vent 1421 is located and the plane where the second vent 1422 is located can make the fan 141 have a certain inclination when installed (as shown in FIG. 18), which can effectively save the installation space of the fan 141.

Further, first air duct members 142 are set with the fans 141 to connect the air outlets 220 to facilitate the installation of the fans 141 and the structural arrangement and design of the whole assembly. The first air duct members 142 can extend the length of the air ducts, which can make the airflow speed faster and can further enhance the suction power and cleaning effect of the dust suction port 210.

In the various structures described previously or in the dust box 20 not mentioned in this embodiment, in order to facilitate the structural design and arrangement, as well as to enable the at least two fans 141 to better discharge the airflow through the exhaust port 116 and to facilitate the convenience of the structural design, a second duct member 143 may be provided between the fans 141 and the corresponding exhaust port 116, referring further to FIG. 22 in conjunction with FIG. 5.

The second air duct member 143 can be used to change the airflow path. to be able to better arrange the location of the fan 141 as well as the exhaust air outlet 116. The number of air duct members 143 is at least two. The fans 141, first air duct members and air second air duct members 143 correspond to each other one by one. The second duct member 143 may be fixedly connected to the corresponding fan 141. The duct inlet 1431 of the second duct member 143 may be connected to the corresponding fan 141, and the duct outlet 1432 of the second air duct member 143 may be connected to the corresponding air exhaust port 116. The duct outlet of the second air duct member 143 and the corresponding exhaust port 116 match, for example, in shape and size. The duct outlet of the second air duct member 143 can be directly against the body part 11 and connected to the exhaust port 116. The second air duct member 143 may be flared, such as substantially flared in the direction from the duct inlet to the duct outlet (as illustrated by the dashed arrows in FIG. 22), i.e., the cross-sectional area of the duct of the second duct member 143 in a plane perpendicular to the direction of extension of the duct gradually increases in the direction from the duct inlet to the duct outlet. Further, the air duct (ventilation space) of the second air duct member 143 is flared in the direction from the air duct inlet to the air duct outlet. In this way, it is possible to make the air flow in the second air duct member 143 with a larger and larger diameter, which in turn makes it possible to slow down the flow speed and reduce noise.

Set the second air duct member 143 to connect the fan 141 and the exhaust port 116, effectively changing the airflow path, can improve the air outlet position of the fan 141 and the exhaust port 116 position misalignment or other mismatch problems, can more effectively arrange the position of the fan 141 and the exhaust port 116, as well as can better match other structural design. And the second air duct member 143 can reduce the airflow noise and make the air flow more smoothly.

In some embodiments, the first air duct member 142 and the second air duct member 143 may also be provided simultaneously. In some embodiments, the first air duct member 142 and the second air duct member 143 may be provided either or neither. The fan 141 can be set against the dust box 20 or the exhaust port 116 (if possible, by means of a seal).

In summary, this application can provide greater suction power and more stable airflow through at least dual fan 141 and dual air duct design, effectively enhancing the cleaning effect. This application can optimize the airflow direction in the dust box 20, and air duct design to improve the filtering effect and cleaning effect of the dust box 20 by setting at least two connecting holes 2211 for setting the first filter 25 respectively.

The above is only an implementation of this application, and is not intended to limit the scope of this application. Any equivalent structure or equivalent process transformation using the contents of this application and the accompanying drawings, or any direct or indirect application in other related technical fields, is comprised in the scope of patent protection of this application.

Claims

1. A cleaning device comprising: a body;a dust box connected to the body;at least two fans provided in the body, the at least two fans are used for forming an airflow went into and out of the dust box via the body;wherein, the dust box is configured to allow airflow formed by the at least two fans to flow out of the dust box in different directions.

2. The cleaning device according to claim 1, wherein, the body is formed with a dust suction port; the dust box is formed with a holding cavity, a dust inlet and at least two air outlets, the dust inlet is used to connect to the dust suction port, the at least two air outlets and the dust inlet are connected to the holding cavity; the at least two fans are used to connect to the at least two air outlets respectively, the at least two air outlets and the holding cavity are provided with a filter between them; wherein at least two of said air outlets are provided in different directions.

3. The cleaning device according to claim 2, wherein, the dust box comprises a top wall, a bottom wall and a side wall connected between the top wall and the bottom wall; the holding cavity is formed between the top wall, the side wall, and the bottom wall, the at least two air outlets are opened in said side wall.

4. The cleaning device according to claim 3, wherein, the at least two air outlets are provided back-to-back on the side walls.

5. The cleaning device according to claim 4, wherein, an angle between planes in which each of the two air outlets are set back-to-back is greater than 0° and less than 180°.

6. The cleaning device according to claim 2, wherein, an access cavity is formed within the dust box; a connecting hole is formed within the dust box to connect the access cavity and the holding cavity; the filter is provided in the connecting hole, the access cavity is connected to the holding cavity through the connecting hole, the access cavity is connected to the air outlets.

7. The cleaning device according to claim 2, wherein, a first air duct member is provided between each fan and corresponding outlet to connect the fan, the first air duct member stands against the dust box and connects to the corresponding outlet.

8. The cleaning device according to claim 7, wherein, a first and second vents are formed on the first air duct member, the first vent connects to the corresponding air outlet, the a second vent connects to the corresponding fan; an angle between a plane in which the first vent is located and a plane in which the second vent is located is greater than 0° and less than 180°.

9. The cleaning device according to claim 7, wherein, a housing area is formed in the body and the dust box is detachably held in the housing area; a connection port is provided in the housing area and connected to the dust suction port, the connection port connects to the dust inlet; the at least two fans are provided in the body, and stand against the dust box by the first air duct member.

10. The cleaning device according to claim 9, wherein, the at least two air outlets are provided on the side walls of the dust box, the fans stand against the side walls of the dust box by the first air duct member and connects to the air outlets.

11. The cleaning device according to claim 10, wherein, a placement cavity is formed in the body and is connected to the housing area, the fans and corresponding second air duct member are provided in the placement cavity.

12. The cleaning device according to claim 2, wherein, The body is provided with at least two exhaust ports, the fans are correspondingly connected to the exhaust ports for connecting the corresponding exhaust ports and air outlets.

13. The cleaning device according to claim 12, wherein, the second air duct member is provided correspondingly between each fan and the corresponding exhaust outlet, an inlet of the second air duct member is connected to the corresponding fan, an outlet of said second air duct member is connected to the corresponding exhaust outlet.

14. The cleaning device according to claim 13, wherein, a cross-sectional area of the second air duct member in a plane perpendicular to a extending direction of the duct increases gradually in a direction from the inlet to the outlet.

15. The cleaning device according to claim 2, wherein, at least two of air outlets are opened on different walls of the dust box; or, at least two of air outlets are opened at intervals on a same wall of the dust box, and the plains where the two outlets located are not parallel to each other.

16. The cleaning device according to claim 2, wherein, the body comprises a driving assembly, a cleaning assembly, a battery assembly, a sensing assembly, and a control circuit; the driving assembly is used to drive the body to walk; the cleaning assembly is used to clean surfaces near the body; the battery assembly is used to power the driving assembly, the cleaning assembly, the sensing assembly, and the control circuit; the sensing assembly for performing sensing work; the control circuit electrically connecting the walking assembly, the cleaning assembly, the battery assembly, and the sensing assembly.

17. A cleaning device comprising: a body with a dust suction port;a dust box connected to the body and configured with a holding cavity, a dust suction port, and at least two air outlets, the dust suction port is connected to the holding cavity, and the at least two air outlets is connected to the holding cavity respectively;at least two fans provided corresponding to the at least two air outlets, the fans are used to form an air stream passing through the dust suction port, the holding cavity, and the air outlets;wherein the at least two air outlets are set in different directions.

18. A cleaning device comprising: a body with a dust suction port;a dust box comprising a dust inlet and at least two air outlets, the dust inlet used to connect to the dust suction port;at least two fans configured in the body and connected to the at least two air outlets respectively, so as to form at least two airflow channels through the dust inlet to the at least two air outlets;wherein an angle between the airflow channels is greater than 0°.

19. A dust box comprising a holding cavity, a dust suction port, and at least two air outlets, wherein the dust suction port is connected to the holding cavity, and the at least two air outlets is connected to the holding cavity respectively.