Cleaning Device, Cleaning System and Swimming Pool Cleaning Device

Description

TECHNICAL FIELD

The present disclosure relates to the technical field of water body cleaning, in particular to a cleaning device, a cleaning system and a swimming pool cleaning device.

BACKGROUND

Swimming pools will produce all kinds of dirt after being used for a long time, so there are cleaning machines on the market that can automatically clean the dirt. Generally, these cleaning machines use crawler belts or wheels as traveling parts, so that the cleaning machines can move on the bottom or wall of the pool. At the same time, they also use roller brushes as cleaning parts, which are used to scrub the surface of the bottom or wall of the pool and stir the dirt into the suction port with the water flow. Under the suction force generated by the filtering system, the water flow entering the suction port will filter and collect the dirt, debris and impurities in the water flow through the filter box, and then discharge the clean water flow to achieve the effect of cleaning the pool.

However, in actual use, it is found that after the roller brushes on some cleaning machines stir up dirt, only part of the dirt enters the dust suction port, and a large number of stirred dirt is suspended in the water; there are also some cleaning machines that do not completely brush the bottom of the pool or the surface of the pool wall. Therefore, the traveling mechanism and cleaning mechanism on the existing cleaning device need to be further optimized to improve the cleaning ability of the cleaning machine.

SUMMARY

The object of the present disclosure is to provide a cleaning device, a cleaning system and a swimming pool cleaning device to solve the technical problem that the cleaning effect of the cleaning device is not ideal in the prior art.

In order to achieve the above object, the technical solutions adopted by the present disclosure are as follows:

In a first aspect, the present disclosure provides a cleaning device, which includes a machine body, a filter box, a fluid pumping apparatus, a traveling mechanism and a cleaning mechanism, wherein the machine body is provided with a water inlet and a water outlet, the filter box is in fluid communication with the water inlet, and the fluid pumping apparatus is used for pumping water from the water inlet to the water outlet; the traveling mechanism comprises traveling wheels, crawler belts and a driving motor, wherein the traveling wheels at least comprise a first rear wheel, a second rear wheel, a first front wheel and a second front wheel; a first crawler belt is sleeved on the peripheries of the first front wheel and the first rear wheel, and a second crawler belt is sleeved on the peripheries of the second front wheel and the second rear wheel; a number of the driving motor is at least one, and the at least one driving motors is in transmission connection with at least one traveling wheel; the cleaning mechanism at least comprises a first roller brush and a second roller brush, wherein the first roller brush and the second roller brush are arranged between the first and second front wheels at intervals in parallel; the first roller brush and the second roller brush are driven by the first front wheel separately, or the first or second roller brush is driven by the first or second front wheel respectively; the first and second roller brushes rotate in opposite directions.

In a second aspect, the present disclosure provides a cleaning system applied to a swimming pool cleaning device, including: at least two roller brushes, wherein the at least two roller brushes are arranged in parallel, and an opening is arranged at a bottom of the corresponding swimming pool cleaning device between the rotating shafts of the at least two roller brushes arranged in parallel, and the opening is at least one of water inlets in fluid communication with a filtering system inside the swimming pool cleaning device; and a roller brush driving source which is in transmission connection with the at least two roller brushes through at least one transmission structure and is configured to drive the at least two roller brushes to rotate in opposite directions.

In a third aspect, the present disclosure provides a swimming pool cleaning device, which at least includes at least one water inlet, a filtering system, a traveling mechanism and a cleaning system. The cleaning system includes: at least two parallel roller brushes at least partially arranged in at least two roller brush bins arranged at the bottom of the cleaning device; at least one water inlet which is arranged between at least two roller brush bins and is in fluid communication with the filtering system; wherein at least two parallel roller brushes are respectively driven by the traveling mechanism to rotate in opposite directions; the at least two roller brushes include blades, and the minimum spacing between the ends of the blades on the two roller brushes is less than or equal to the width of the water inlet.

The cleaning device provided by the present disclosure has at least the following beneficial effects: the driving motor, the traveling wheel, the crawler belt, the first roller brush and the second roller brush are in transmission connection, so that the traveling mechanism and the cleaning mechanism work together in linkage, so that when the cleaning device travels, the first roller brush and the second roller brush will rotate to stir the dirt on the surface of the pool bottom or the pool wall; since the first roller brush and the second roller brush are both arranged near the front wheels, the distance is close, and the water inlet corresponds to the interval position between them, under the synchronous rotation of the first roller brush and the second roller brush, the stirred dirt can be quickly drawn into the water inlet along with the water flow, so that the stirred dirt can be prevented from being suspended in the water and cannot be effectively cleaned, and the underwater cleaning capability of the cleaning device is improved.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solution in the embodiment of the present disclosure more clearly, the drawings needed to be used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those skilled in the art, other drawings can be obtained according to these drawings without creative work.

FIG. 1 is a schematic side view of a cleaning device provided by an embodiment of the present disclosure;

FIG. 2 is a perspective view of the positional relationship between a traveling mechanism and a cleaning mechanism provided by an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a traveling wheel 141 provided by an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another traveling wheel 141 provided by the embodiment of the present disclosure;

FIG. 5 is a side sectional view of a traveling mechanism and a cleaning mechanism provided by an embodiment of the present disclosure;

FIG. 6 is a side sectional view of another traveling mechanism and cleaning mechanism provided by the embodiment of the present disclosure;

FIG. 7 is a schematic diagram of the transmission relationship of the cleaning mechanism driven by two traveling wheels to work provided by the embodiment of the present disclosure;

FIG. 8 is a schematic diagram of the transmission relationship of the cleaning mechanism driven by two traveling wheels to work provided by the embodiment of the present disclosure;

FIG. 9 is a schematic diagram of the transmission relationship in which a driving motor is provided in a roller brush according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of the transmission relationship provided by the embodiment of the present disclosure, in which driving motors are arranged in two roller brushes;

FIG. 11 is a structural diagram of a first roller brush and a second roller brush provided by an embodiment of the present disclosure;

FIG. 12 is a side position relationship diagram of the first roller brush and the second roller brush provided by the embodiment of the present disclosure.

FIG. 13 is a schematic view of the side structure of a cleaning system on swimming pool cleaning device provided by an embodiment of the present disclosure;

FIG. 14 is a structural schematic diagram of a bottom shell at the bottom of swimming pool cleaning device provided by an embodiment of the present disclosure;

FIG. 15 is a structural schematic diagram of a roller brush provided by an embodiment of the present disclosure;

FIG. 16 is a structural schematic diagram of a traveling mechanism and a cleaning system provided by an embodiment of the present disclosure;

FIG. 17 is the first schematic diagram of the transmission relationship between a traveling mechanism and a roller brush provided by an embodiment of the present disclosure;

FIG. 18 is the second schematic diagram of the transmission relationship between the traveling mechanism and the roller brush provided by an embodiment of the present disclosure;

FIG. 19 is a third schematic diagram of the transmission relationship between the traveling mechanism and the roller brush provided by an embodiment of the present disclosure.

Wherein, each reference sign in the figures (those in the in brackets are the reference signs in the original priority document):

100, Cleaning device; 110, Machine body; 111, Water inlet; 112, Water outlet; 120, Filter box; 130, Fluid pumping apparatus; 140, Traveling mechanism; 141, Traveling wheel; 1411, First external teeth; 1412, Second external teeth; 1413, Internal teeth; 1414, Central teeth; 142, Crawler belt; 1421, Tooth space; 143, Driving motor; 1431, Driving gear; 150, Cleaning mechanism; 151, First roller brush; 1511, First roller brush gear; 152, Second roller brush; 1521, Second roller brush gear; 153, Rotating shaft; 154, Shaft sleeve; 155, Blade; 1, Cleaning system; 11, Roller brush; 153 (11A), Rotating shaft; 154 (11B), Shaft sleeve; 155 (11C), Blade; 151 (111), First roller brush; 152 (112), Second roller brush; 12, Opening; 13, Roller brush gear; 1511 (131), First roller brush gear; 1521 (132), Second roller brush gear; 14, Transition gear; 2, Swimming pool cleaning device; 21, Bottom shell; 211, Roller brush bin; 22, Filter system; 141 (231), Traveling wheel; 2311, First front wheel; 2312, Second front wheel; 2313, First rear wheel; 2314, Second rear wheel; 142 (232), Crawler belt; 143 (233), Driving motor; 1431 (2331), Driving gear; 1411 (231A), First external tooth; 1412 (231B), Second external teeth; 1413 (231C), Internal teeth; 1414 (231D), Central tooth; 1421 (2321), Tooth space.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make the technical problems, technical solutions and beneficial effects to be solved in this disclosure more clear, the following is a further detailed description of this disclosure with the attached drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the disclosure and are not used to limit the disclosure.

It should be noted that when a component is said to be “fixed” or “disposed” on another component, it can be directly or indirectly located on the other component. When a component is said to be “connected” to another component, it can be directly or indirectly connected to the other component. The directions or positions indicated by the terms “upper”, “lower”, “left”, “right”, “front”, “rear”, “vertical”, “horizontal”, “top”, “inner” and “outer” are based on the directions or positions shown in the attached drawings, and are only for the convenience of description, and cannot be understood as limiting the technical solution. The terms “first” and “second” are only used for convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of “plural” is two or more, unless otherwise specifically defined.

With reference to FIG. 1, an embodiment of the present disclosure provides a cleaning device 100, which at least includes a machine body 110, a filter box 120, a fluid pumping apparatus 130, a traveling mechanism 140 and a cleaning mechanism 150, wherein the machine body 110 is provided with a water inlet 111 and a water outlet 112, the filter box 120 is in fluid communication with the water inlet 111, and the fluid pumping apparatus 130 is used for pumping water from the inlet and outlet to the water outlet 112. The traveling mechanism 140 includes traveling wheels 141, crawler belts 142 and driving motors 143, wherein the traveling wheels 141 are divided into two groups, and the two groups of traveling wheels 141 are respectively arranged on two sides of the machine body 110, and each group of traveling wheels 141 at least includes a front wheel and a rear wheel, and the front wheel and the rear wheel on each side synchronously rotate by being connected with a crawler belt 142, and the number of the driving motors 143 is at least one, and each driving motor 143 is in transmission connection with at least one traveling wheel 141, so that the crawler belt 142 is driven by the traveling wheel 141 to roll.

The cleaning mechanism 150 includes a first roller brush 151 and a second roller brush 152, which are axially parallel and spaced between two groups of traveling wheels. At least one axial end of each of the first roller brush 151 and the second roller brush 152 is in transmission connection with at least one front wheel or a driving motor 143 driving the front wheel on at least one side, so that the first roller brush 151 and the second roller brush 152 rotate in opposite directions. Preferably, one of the water inlets 111 corresponds to the interval between the first roller brush 151 and the second roller brush 152, that is, the water flows towards the water inlet 111 through the interval between the two roller brushes.

The working principle of the cleaning device 100 is as follows: the traveling wheel 141 is driven by the driving motor 143, and the crawler belt 142 rolls under the rotation of the traveling wheel 141, so that the cleaning device 100 can move on the bottom or wall of the pool; at the same time, the front wheel in the traveling wheel 141 or the driving motor 143 driving the front wheel also drives the first roller brush 151 and the second roller brush 152 to rotate in opposite directions, so that when the cleaning device 100 moves, the first roller brush 151 and the second roller brush 152 scrub the surface of the pool bottom or the pool wall by rotating, stirring up dirt. Therefore, the two first roller brushes 151 and the second roller brush 152 rotate in opposite directions to quickly draw the stirred dirt into the water inlet 111, and under the pumping of the fluid pumping apparatus 130, the dirt is sent to the filter box 120 together with the water flow for filtering, so that the dirt is separated and collected in the filter box 120, and then the filtered and cleaned water flow is pumped to the water outlet 112 to return to the pool, so as to achieve the effect of cleaning the swimming pool. It should be noted that the first roller brush 151 and the second roller brush 152 can also be placed at the rear of the cleaning device 100, that is, driven to rotate by a rear wheel or a driving motor.

In this disclosure, the transmission connection among the driving motor 143, the traveling wheel 141, the crawler belt 142 and the first roller brush 151 and the second roller brush 152 makes the traveling mechanism 140 work in conjunction with the cleaning mechanism 150, so that when the cleaning device 100 travels, the first roller brush 151 and the second roller brush 152 will rotate to stir the dirt on the pool bottom or the pool wall surface to be quickly drawn into the water inlet 111; in one embodiment, since the first roller brush 151 and the second roller brush 152 are both arranged near the front wheel, the first roller brush 151 and the second roller brush 152 and the water inlet 111 are projected to the corresponding surface to be cleaned, and the projection of the water inlet 111 is between the rotating shafts of the first roller brush and the second roller brush, and both the first roller brush 151 and the second roller brush 152 are in contact with the surface to be cleaned during operation. At the same time, the roller brush bin walls or cleaning device side walls arranged at both ends of the two roller brushes are close to the surface to be cleaned, or brushes or soft glue are arranged at the roller brush bin walls or cleaning device side walls close to the surface to be cleaned so as to contact with the surface to be cleaned, thus forming a relatively closed negative pressure space, which can more effectively suck the dust-laden water flow in the space into the filter box 120, prevent the stirred dirt from being suspended in the water and not being effectively cleaned, and improve the underwater cleaning ability of the cleaning device 100.

The machine body 110 refers to the main structure of the cleaning device 100, including but not limited to the shell. The shell is not only a protective outer layer in the cleaning device 100, but also provides the structural framework of the machine body 110 to support and fix the internal key components. For example, the machine body 110 includes a bottom shell, a water inlet is arranged on the corresponding bottom shell between the first roller brush and the second roller brush 152, and roller brush grooves are respectively arranged on both sides of the water inlet in the width direction for installing the roller brushes.

It can be understood that the positions of the water inlet 111 and the water outlet 112 on the machine body 110 are not unique. For example, the water inlet 111 can be arranged at the side, top or bottom of the machine body 110. Referring to FIG. 1, the water inlet 111 is generally in fluid communication with the filter box 120. The suction force generated by the fluid pumping apparatus 130 pumps the water near the water inlet 111 from the water inlet 111 to the water outlet 112. During this process, the water will pass through the filter box 120, and the filter box 120 will filter and collect the dirt or impurities in the water flow, and then pump the clean water to the water outlet 112 to be discharged from the machine body. Wherein, the fluid pumping apparatus 130 and the water outlet 112 can be used as a water spraying mechanism for spraying water outwards to provide auxiliary power for the cleaning device 100, and there can be one or more water outlets 112. For example, when the cleaning device 100 is located on the water surface, water can be sprayed outwards by adjusting the direction of the water outlet 112, so that the cleaning device 100 can obtain corresponding thrust to assist the cleaning device 100 to move or adjust its posture on the water surface; when the cleaning device 100 is located on the pool wall, the pressure perpendicular to the pool wall can be obtained by adjusting the direction of the water outlet 112, so that the cleaning device 100 can cling to the pool wall more stably.

The filter box 120 is a component for filtering and collecting impurities and dirt in water. It is usually designed as a container that can be detached from the machine body and is provided with filter media, including but not limited to a filter screen or a filter bag. The water flow becomes clean after passing through the filter box 120, and is pumped to the water outlet 112 through the fluid pumping apparatus 130 to be discharged, thus achieving the effect of cleaning the water quality. Of course, in practice, the specific implementation structure of the filter box 120 is not unique, and the filter box 120 is not the focus of this disclosure, so I will not repeat it here.

The fluid pumping apparatus 130 is used to pump the water near the water inlet 111 to send the dirt into the filter box 120 for filtration, and then pump the filtered water to the water outlet 112 for discharge. In this embodiment, the fluid pumping apparatus 130 can be selected as a water pump, and the type of the water pump is not limited in this embodiment.

With reference to FIG. 2, in some embodiments, the traveling wheels 141 of the traveling mechanism at least include a first rear wheel, a second rear wheel, and a first front wheel and a second front wheel, wherein the peripheries of the first front wheel and the first rear wheel are sleeved with a first crawler belt, and the peripheries of the second front wheel and the second rear wheel are sleeved with a second crawler belt, and the first crawler belt and the second crawler belt are arranged on both sides of the traveling direction of the cleaning device, and are driven to roll by at least one driving motor in transmission connection with at least one traveling wheel 141. For example, when the first crawler belt and the second crawler belt on both sides of the traveling mechanism roll at the same speed, the cleaning device walks in a straight line; when only the first crawler belt or the second crawler belt rolls, or the first crawler belt and the second crawler belt roll differentially, the cleaning device turns around. In addition, the first roller brush 151 and the second roller brush 152 are arranged between the first and second front wheels in parallel and at intervals, and the first roller brush 151 and the second roller brush 152 are independently driven by one traveling wheel 141, for example, the first or second front wheels independently drive the first and second roller brushes 152 to rotate. Alternatively, the first and second roller brushes 152 are driven by two traveling wheels 141, for example, the first roller brush 151 is driven to rotate by the first front wheel and the second roller brush 152 is driven to rotate by the second front wheel; for another example, the first and second roller brushes 152 are divided into two sections, one sections of the first and second roller brushes 152 are driven by the first front wheel to rotate in opposite directions, and the other sections of the first and second roller brushes 152 are driven by the second front wheel to rotate relatively.

With reference to FIG. 3, in some embodiments, at least one circle of external teeth, including first external teeth 1411 and second external teeth 1412, are arranged on the periphery of the traveling wheel 141, and the first external teeth 1411 and the second external teeth 1412 are arranged side by side along the axial direction of the traveling wheel 141, and the inner side of the traveling wheel 141 is provided with internal teeth 1413.

With reference to FIG. 4, in some embodiments, the traveling wheel 141 is provided with external teeth and central teeth 1414, the axes of which coincide with the axis of the traveling wheel 141, and the external teeth are arranged on the outer periphery of the traveling wheel 141, and the central teeth 1414 are arranged on the rotating shaft at one side of the traveling wheel 141. For example, the external teeth in FIG. 3 can be selected as the first external teeth 1411 in FIG. 2, and the central teeth 1414 are axially and fixedly connected to one side of the traveling gear, and the central teeth 1414 coincides with the axis of the traveling wheel 141.

Actually, at least one of the first front wheel, the second front wheel, the first rear wheel and the second rear wheel in the traveling mechanism can be selected as the traveling wheel 141 with the structure shown in FIG. 2 or the traveling wheel 141 with the structure shown in FIG. 3. Of course, the traveling wheel 141 can also be realized as a combination of at least one of the first outer teeth 1411, the second outer teeth 1412, the internal teeth 1413 and the center teeth 1414. For example, in one embodiment, only the first external teeth 1411 are provided on the traveling wheel 141 for transmission connection with the crawler belt 142; or the traveling wheel 141 is provided with first external teeth 1411, second external teeth 1412, internal teeth 1413 and central teeth 1414.

With reference to FIG. 5, in one embodiment, when the crawler belt 142 is sleeved on the periphery of the traveling wheel 141, the crawler belt 142 is provided with tooth spaces 1421, which are matched with the first external teeth 1411, and the first external teeth 1411 are embedded in the tooth spaces 1421, so that the crawler belt 142 and the traveling wheel 141 form a close connection in the circumferential direction. When the traveling wheel 141 rotates, the first external teeth 1411 and the tooth spaces 1421 are mutually limited and locked, so that the crawler belt 142 is pulled or pushed to roll; when the crawler belt 142 rolls, the tooth spaces 1421 on the crawler belt 142 and the external teeth (such as the first external teeth 1411) on the traveling wheel 141 are mutually limited and locked, so that the traveling wheel 141 is pulled or pushed to rotate.

With reference to FIGS. 4 and 6, in one embodiment, when the driving motor is in gear transmission with the traveling wheel 141, the output shaft of the driving motor 143 is provided with a driving gear 1431, which is engaged with the external teeth (such as the second external teeth 1412), the internal teeth 1413 or the central teeth 1414 on the traveling wheel 141, and when the driving motor 143 rotates, the driving gear 1431 is engaged with external teeth (such as the second external teeth 1412), internal teeth 1413 or central teeth 1414 on the traveling wheel 141 to drive the traveling wheel 141 to rotate.

With reference to FIG. 5 and FIG. 6, in one embodiment, when the roller brush is in transmission connection with the traveling wheel 141, a roller brush gear is arranged at one end of the rotating shaft of the roller brush, and the roller brush gear is engaged with the external teeth (such as the second external teeth 1412), the internal teeth 1413 or the central teeth 1414 on the traveling wheel 141, and when the traveling wheel 141 rotates, the external teeth, internal teeth 1413 or central teeth 1414 can be engaged with the roller brush gear to drive the roller brush to rotate; alternatively, when the roller brush rotates, the roller brush gear is engaged with the external teeth, the internal teeth 1413 or the central teeth 1414 to drive the traveling wheel 141 to rotate.

Wherein, when the driving gear 1431 or the roller brush gear is engaged with the center teeth 1414 or the outer teeth (for example, the second outer teeth 1412) of the traveling wheel 141, the driving gear 1431 or the roller brush gear rotates in the opposite direction to the traveling wheel 141; when the driving gear 1431 or the roller brush gear is engaged with the internal teeth 1413 of the traveling wheel 141, the driving gear 1431 or the roller brush gear rotates in the same direction as the traveling wheel 141. For example, in some embodiments, two roller brushes are respectively engaged with the external teeth and the internal teeth 1413 of the traveling wheel 141 to drive the two roller brushes to rotate in opposite directions.

It can be understood that the external teeth, internal teeth 1413 and central teeth 1414 on the traveling wheel 141, and the gear types of the roller brush gear on the roller brush and the driving gear 1431 on the driving motor 143 are generally determined by the relative positions between the roller brush and the driving motor 143 and the traveling wheel 141. For example, if the roller brush is in parallel-shaft transmission with the driving motor 143 and the traveling wheel 141, the external teeth, internal teeth 1413 and central teeth 1414 on the traveling wheel 141, the driving gear 1431 on the driving motor 143 and the roller brush gear can be selected as parallel shaft gears, including but not limited to spur gears, helical gears, internal teeth 1413 wheels or external gears; if the roller brush is in intersecting-shaft transmission with the driving motor 143 and the traveling wheel 141, the external teeth, internal teeth 1413 and central teeth 1414 on the traveling wheel 141, the driving gear 1431 on the driving motor 143 and the roller brush gear can be selected as intersecting shaft gears, including but not limited to straight bevel gears, spiral bevel gears or zero-degree bevel gears; if the roller brush is in staggered-shaft transmission with and driving motor 143 and the traveling wheel 141, the external teeth, internal teeth 1413 and central teeth 1414 on the traveling wheel 141, the driving gear 1431 on the driving motor 143 and the roller brush gear can be selected as staggered shaft gears, including but not limited to staggered shaft helical gears, worm and worm gears or hypoid gears.

Wherein, when at least one traveling wheel 141 in the traveling mechanism, such as the first front wheel or the first and second front wheels, drives the first and second roller brushes 152 of the cleaning mechanism to rotate, the at least one traveling wheel 141 of the traveling mechanism can completely serve as the main power source to drive the first and second roller brushes 152 to rotate; alternatively, one traveling wheel 141 on one side of the traveling mechanism can be used as the main power source to drive the first or/and the second roller brush 152 to rotate, and then the first or/and the second roller brush 152 can be used as the slave power source to drive at least one traveling wheel 141 on the other side of the traveling mechanism to rotate, so as to realize the rotation of the traveling wheels 141 on both sides of the traveling mechanism, or the traveling wheels 141 can pull the crawler belt 142 to roll. Alternatively, at least one traveling wheel 141 on one side of the traveling mechanism can be used as the main power source to drive the first or second roller brushes 151, 152 to rotate, and then the first or second roller brushes 151, 152 can be used as the slave power source to drive the at least one traveling wheel 141 on the other side of the traveling mechanism to rotate, and then the rotation of the at least one traveling wheel 141 on the other side of the traveling mechanism can drive the second or first roller brushes 151 to rotate, at the same time, the traveling wheels 141 on both sides of the traveling mechanism can rotate, or the traveling wheels 141 can pull the crawler belt 142 to roll.

With reference to FIGS. 2-6, in some embodiments, the cleaning mechanism is driven by a traveling wheel 141, and the number of driving motors 143 is one. One driving motor 143 is in transmission connection with the first or second rear wheel, and the first roller brush 151 and the second roller brush 152 are in transmission connection with the first or second front wheel in the same direction and in the opposite direction respectively. When the driving motor 143 drives the first or second rear wheel to rotate, the rotation of the first or second rear wheel is transmitted to the first or second front wheel on the same side through the crawler belt, so that the first or second front wheel rotates, and the first or second front wheel drives the first and second roller brushes 152 to rotate in opposite directions, and the rotation of the first or second roller brushes 151 and 152 drives the first or second front wheel on the opposite side to rotate.

For example, in combination with FIGS. 3 and 4, the first and second rear wheels are provided with at least first external teeth 1411 and at least one of second external teeth 1412, internal teeth 1413 and central teeth 1414, and the first and second front wheels are provided with at least first external teeth 1411, second external teeth 1412 and internal teeth 1413; the first external teeth 1411 on the first front wheel and the first rear wheel are in engagement transmission connection with the tooth spaces 1421 on the first crawler belt, and the first external teeth 1411 on the second front wheel and the second rear wheel are in engagement transmission connection with the tooth spaces 1421 on the second crawler belt; a driving gear 1431 is arranged on the output shaft of a driving motor 143, and the driving gear 1431 is engaged with the central teeth 1414 or the internal teeth 1413 or the external teeth of the first rear wheel for transmission; when the driving motor 143 rotates, the first rear wheel is driven to rotate, and the rotation of the first rear wheel drives the first crawler belt to roll, thereby driving the first front wheel to rotate; one end of the rotating shaft of the first roller brush 151 is provided with a first roller brush gear 1511, and one end of the rotating shaft of the second roller brush 152 is provided with a second roller brush gear 1521; the first roller brush gear 1511 and the second roller brush gear 1521 are respectively in transmission connection with the external teeth and the internal teeth 1413 of the first front wheel, so that the first roller brush 151 and the second roller brush can rotate in opposite directions; in addition, the other end of the rotating shaft of the first roller brush 151 is provided with a third roller brush gear which is in engagement transmission connection with the external teeth of the second front wheel, or the other end of the rotating shaft of the second roller brush is provided with a third roller brush gear which is in engagement transmission connection with the internal teeth 1413 of the second front wheel; when the first or second roller brushes 151, 152 rotate, the second front wheel is driven to rotate, and the rotation of the second front wheel drives the second crawler belt roller brush, thereby driving the second rear wheel to rotate. It can be understood that if one driving motor 143 is used to drive the second rear wheel, it is the same as the case of driving the first rear wheel described above, so the details will not be repeated here.

Wherein, in order to reduce the mold opening cost, in the embodiment of the present disclosure, the four traveling wheels 141 of the traveling mechanism can be selected to have the same structure. For example, with reference to FIG. 2, the first and second front wheels and the first and second rear wheels are all provided with first external teeth 1411, second external teeth 1412 and internal teeth 1413.

Because a front wheel is used as the driving input of the first and second roller brushes, the first roller brush 151 is input through the external teeth of the front wheel, and the second roller brush is input through the internal teeth 1413 of the front wheel, and both the first and second roller brushes contact the surface to be cleaned in the process of traveling, so the rotating shafts of the first roller brush 151 and the second roller brush are located on both sides of the rotating shaft of the front wheel respectively. Seen from the side of the cleaning device, the rotating shaft of the first roller brush 151 is outside the range of the front wheel. In the embodiment of the present disclosure, the internal teeth 1413 and the external teeth on the front wheel at one side of the traveling mechanism drive the two roller brushes at both sides of the rotating shaft of the front wheel at the same time, so as to realize the opposite rotation of the two roller brushes.

With reference to FIGS. 3 and 4, in some embodiments, the first and second rear wheels are provided with at least first external teeth 1411 and one of second external teeth 1412, internal teeth 1413 and central teeth 1414, and the first and second front wheels are provided with first external teeth 1411 and central teeth 1414; the first external teeth 1411 on the first front wheel and the first rear wheel are in engagement transmission connection with tooth spaces 1421 on the first crawler belt; the output shaft of a driving motor 143 is provided with a driving gear 1431, which is engaged with the central teeth 1414 or the internal teeth 1413 or the external teeth of the first rear wheel for transmission, and drives the first rear wheel to rotate together when the driving motor 143 rotates, and the rotation of the first rear wheel drives the first crawler belt to roll, thereby driving the first front wheel to rotate; one end of the rotating shaft of the first roller brush 151 is provided with a first roller brush gear 1511, and one end of the rotating shaft of the second roller brush is provided with a second roller brush gear 1521; the first roller brush gear 1511 and the second roller brush gear 1521 are respectively in transmission connection with the central teeth 1414 of the first front wheel, wherein the first roller brush gear 1511 and the central teeth 1414 of the first front wheel can be in transmission connection through a first transition gear, and the second roller brush gear 1521 can also be in transmission connection with the central teeth 1414 of the first front wheel through a second transition gear, but in order to enable the first roller brush gear 151 and the second roller brush gear to rotate in opposite directions, the first and second transition gears are alternatively arranged. In addition, the other end of the rotating shaft of the first roller brush 151 is provided with a third roller brush gear, which is in engagement transmission connection with the central teeth 1414 of the second front wheel, or the second roller brush gear 1521 is in transmission connection with the central teeth 1414 of the second front wheel through the third transition gear to drive the second front wheel to rotate, and at the same time, the rotation of the second gear drives the second crawler belt to roll, thereby driving the second rear wheel to rotate together. In this way, a driving motor 143 indirectly drives the traveling wheels 141 and crawler belts on both sides of the traveling mechanism to rotate in the same direction, and at the same time, one of the front wheels drives the first and second roller brushes to rotate in the opposite direction. If the driving motor 143 drives the second rear wheel, the situation is the same as that of driving the first rear wheel, so the details will not be repeated.

With reference to FIGS. 2-6, in some embodiments, the cleaning mechanism is driven by a traveling wheel 141, and the number of driving motors 143 is one. Both ends of the output shaft of one driving motor 143 are respectively in transmission connection with the first or second rear wheel, and the first roller brush 151 and the second roller brush are respectively in transmission connection connected with the first or second front wheel in the same direction and in a reverse direction. When the driving motor 143 drives the first and second rear wheels to rotate, the rotation of the first and second rear wheels is correspondingly transmitted to the first and second front wheels through the crawler belt, so that the first and second front wheels rotate, and the rotation of the first or second front wheels drives the first and second roller brushes to rotate in opposite directions.

Specifically, the driving motor 143 has two output shafts, which can rotate synchronously or independently. Optionally, in one embodiment, the driving motor 143 is a biaxial motor, and the two output shafts of the driving motor 143 rotate synchronously.

For example, with reference to FIGS. 2-4, the first and second rear wheels are provided with first external teeth 1411 and at least one of second external teeth 1412, internal teeth 1413 and central teeth 1414, and the first and second front wheels are provided with first external teeth 1411 and central teeth 1414, or first external teeth 1411, second external teeth 1412 and internal teeth 1413; the first external teeth 1411 on the first front wheel and the first rear wheel are in engagement transmission connection with the tooth spaces 1421 on the first crawler belt, and the first external teeth 1411 on the second front wheel and the second rear wheel are in engagement transmission connection with the tooth spaces 1421 on the second crawler belt; a driving motor 143 is provided with a driving gear 1431 on the output shaft at both ends in the axial direction, and the driving gears 1431 at both ends are respectively engaged with the central teeth 1414 or the internal teeth 1413 or the external teeth of the first and second rear wheels for transmission, and when the driving motor 143 rotates, the first and second rear wheels are driven to rotate together, and the rotation of the first and second rear wheels drives the crawler belt to roll, thereby driving the first and second front wheels to rotate; one end of the rotating shaft of the first roller brush 151 is provided with a first roller brush gear 1511, and one end of the rotating shaft of the second roller brush is provided with a second roller brush gear 1521; the first roller brush gear 1511 and the second roller brush gear 1521 are respectively in transmission connection with the central teeth 1414 of the first front wheel, wherein the first roller brush gear 1511 and the central teeth 1414 of the first front wheel can be in transmission connection through a first transition gear, and the second roller brush gear 1521 can also be in transmission connection with the central teeth 1414 of the first front wheel through a second transition gear, but in order to enable the first roller brush 151 and the second roller brush to rotate in opposite directions, first and second transition gears are alternatively arranged. Alternatively, the first roller brush gear 1511 and the second roller brush gear 1521 are respectively in transmission connection with the external teeth and the internal teeth 1413 of the first front wheel, so that the first roller brush 151 and the second roller brush can rotate in opposite directions.

Wherein, in order to reduce the mold opening cost, in the embodiment of the present disclosure, the four traveling wheels 141 of the traveling mechanism can be selected to have the same structure, for example, the first and second front wheels, and the first and second rear wheels are all provided with the first external teeth 1411 and the central teeth 1414; alternatively, the first and second front wheels, as well as the first and second rear wheels, are all provided with first external teeth 1411, second external teeth 1412 and internal teeth 1413.

In the above embodiment, one or two traveling wheels 141 are driven by one driving motor 143, so that the traveling mechanism rolls on the crawler belts on both sides, and at the same time, the front wheel on one side is used to drive the first and second roller brushes of the cleaning mechanism to rotate in opposite directions, thus achieving the effect that one traveling wheel 141 independently drives the first and second roller brushes to rotate in opposite directions, which is not only exquisite in structure, but also less in driving parts, which is beneficial to optimizing the product cost.

In some embodiments, with reference to FIG. 2, in the above-mentioned embodiment where a single front wheel drives two roller brushes to rotate in opposite directions by driving two rear wheels by one driving motor 143, in order to achieve the same effect, two motors can be used instead of one motor, that is, two motors are respectively connected with the first and second rear wheels in a transmission way. However, when two driving motors 143 are used, the traveling on both sides of the traveling mechanism is driven by independent motors. When the driving motors 143 drive the two sides of the traveling mechanism to walk differentially, the device can turn around on the bottom or wall of the pool, thus enhancing the traveling function of the device.

With reference to FIGS. 2-7, in some embodiments, the cleaning mechanism is driven by two traveling wheels 141, and the number of driving motors 143 is at least one. The at least one driving motor 143 is in transmission connection with the first and second rear wheels to drive them to rotate, and the first roller brush 151 is in transmission connection with the first front wheel and the second roller brush is in transmission connection with the second front wheel. When the driving motor 143 drives the first and second rear wheels to rotate, the crawler belt drives the first and second front wheels on the same side as the first and second rear wheels to rotate, and the first and second front wheels respectively drive the first and second roller brushes to rotate oppositely. Wherein, when there is only one driving motor 143, both ends of the driving motor 143 jointly drive the two rear wheels to rotate; when there are two driving motors 143, each of the two motors is driven by an independent driving motor 143.

In one embodiment, referring to FIGS. 2 and 7, there are preferably two driving motors 143, and the cleaning device is still divided into left and right sides. At one side, the first rear wheel is driven in a gear-driven manner through a driving motor 143, wherein the rear wheel is provided with central teeth 1414 or internal teeth 1413 or an external teeth, and the driving gear 1431 of the driving motor 143 is in engagement transmission with the central teeth 1414 or the internal teeth 1413 or the external teeth; the rotation of the first rear wheel drives the rolling of the first crawler belt, and then drives the rotation of the first front wheel, wherein both the first front wheel and the first rear wheel are provided with first external teeth 1411 engaged with the tooth spaces 1421 of the first crawler belt; on the first roller brush 151 and the second roller brush 152, one of the rotating shafts is provided with a transmission gear in the extending direction to the first front wheel, and the other roller brush is provided with a support; the transmission gear is engaged with the central teeth 1414 of the first front wheel for transmission, and the support can be a toothless cylindrical piece, for example, which can abut against the inner ring or the outer ring of the front wheel to only support the rotation of the other roller brush and ensure the rotation stability of the other roller brush. Through the above arrangement, the transmission of the rear wheel, the crawler belt, the front wheel and one roller brush on one side of the cleaning device can be realized, and the support of the other roller brush can be realized at the same time. On the other side of the cleaning device, the rear wheel, the crawler belt and the front wheel can adopt the same transmission parts and transmission modes, while on the first roller brush 151 and the second roller brush 152, one of the rotating shafts is provided with a transmission gear in the extension direction to the second front wheel, and the other is provided with a support, and the transmission gear is engaged with the central teeth 1414 of the second front wheel for transmission.

In some embodiments, combined with FIG. 3, FIG. 5 and FIG. 7, the front wheels on both sides of the traveling mechanism are optionally provided with internal teeth 1413 and external teeth (for example, the second external teeth 1412). Different from the above-mentioned embodiments, on the first roller brush 151 and the second roller brush, one of the rotating shafts is provided with a roller brush gear in the extension direction to the first front wheel, and the other is provided with a support, and the roller brush gear is engaged with the external teeth or internal teeth 1413 of the first front wheel for transmission; the support can be, for example, a toothless cylindrical piece, which can abut against the inner ring or the outer ring of the front wheel, and the support is only provided for the rotation of the other roller brush, so as to ensure the rotation stability of the other roller brush.

With reference to FIGS. 2-8, in some embodiments, the cleaning mechanism is driven by two traveling wheels 141, and the rear wheels on both sides of the traveling mechanism are driven by at least one driving motor 143. When the two rear wheels rotate, the corresponding caterpillar crawler belts are driven to roll, thereby driving the two front wheels to rotate. The first and second roller brushes each include two sections rotationally connected in an axial direction, and one sections of the first and second roller brushes are respectively connected with the first front wheel in a transmission way, and the other ends of the first and second roller brushes are respectively connected with the second front wheel in a transmission way; when the first front wheel rotates, one sections of the first and second roller brushes are driven to rotate in opposite directions, and when the second front wheel rotates, the other sections of the first and second roller brushes are driven to rotate in opposite directions. Because the first and second roller brushes are divided into two sections that rotate independently in the axial direction, the two sections of the roller brushes are driven independently by the front wheels on both sides of the traveling mechanism. When the front wheels on both sides of the traveling mechanism rotate differentially, not only the different roller brushes are driven to rotate differentially, but also the two ends on the same roller brush are driven to rotate differentially, which is beneficial to achieving a smaller turning radius and thus improving the flexibility of device turning.

Referring to FIG. 8, in some embodiments, the first roller brush 151 and the second roller brush 152 are segmented, which are divided into a first section and a second section respectively, and the first section and the second section can rotate independently without interference; at this time, the cleaning device can be divided into left and right sides, and the traveling mechanisms and cleaning mechanisms on both sides adopt symmetrical driving and transmission structures. Take one side as an example: the driving gear 1431 of the driving motor 143 is engaged with the central teeth 1414 or internal teeth 1413 or external teeth of the rear wheel to drive the rear wheel, and the rotation of the rear wheel drives the crawler belt to roll, which in turn drives the front wheel to rotate. The end parts of the first and second roller brushes on one side are respectively provided with roller brush gears. The rear wheel is provided with central teeth 1414, and the first roller brush 151 and the second roller brush are respectively in transmission connection with the central teeth 1414, and a transition gear is provided in the transmission between one of the first roller brush 151 or the second roller brush and the central teeth 1414. The other side adopts the same transmission structure, so that the whole transmission of the cleaning device can be realized, and at the same time, the arrangement of a transition gear can realize the opposite rotation of the first and second roller brushes.

With reference to FIGS. 3-8, in another embodiment, the front wheels and the rear wheels on both sides of the traveling mechanism are provided with internal teeth 1413 and external teeth. Then, take one side as an example: the driving gear 1431 of the driving motor 143 is engaged with the central teeth 1414 or internal teeth 1413 or external teeth of the rear wheel to drive the rear wheel, and the rotation of the rear wheel drives the crawler belt to roll, which in turn drives the front wheel to rotate, and the end parts of the first and second roller brushes on one side are respectively provided with roller brush gears. The front wheel is provided with internal teeth 1413 and external teeth (such as the second external teeth 1412), and the first roller brush 151 and the second roller brush are respectively in transmission connection with the external teeth and internal teeth 1413 of the front wheel through roller brush gear. The other side adopts the same transmission structure, so that the whole transmission of the cleaning device can be realized. The first roller brush 151 and the second roller brush are driven by the inner side and the outer side of the front wheel at the same time, so that the first roller brush and the second roller brush can rotate in opposite directions.

Referring to FIG. 8, the first roller brush 151 includes a first section and a second section, which are rotationally connected in an axial direction, and may be the same or different in length; the second roller brush includes a third section and a fourth section, and the third section and the fourth section are rotationally connected in axial direction, and the same length can be the same or different. When the lengths of the first roller brush 151 and the second roller brush are the same, that is, the lengths of the first, second, third and fourth segments are the same, then the driving mechanism and the cleaning mechanism are symmetrical along the center line of the moving direction of the cleaning device; when the two sections of the first roller brush 151 and the second roller brush are different in length, the first and second sections may be different in length, while the third and fourth sections are the same in length. At this time, one front wheel can drive the first and third sections to rotate in opposite directions, and the other front wheel can drive the second and fourth sections to rotate in opposite directions, or the first and second sections are the same in length, while the third and fourth sections are different in length, and the driving methods are the same. It is also possible that the first and second sections are different in length, the first section is longer than the second section, while the third section is longer than the fourth section, and the first and third sections are the same in length, and the second and fourth sections are the same in length. At this time, one front wheel can drive the first and third sections to rotate, and the other front wheel can drive the second and fourth sections to rotate; or one front wheel drives the first and fourth segments to rotate, while the other front wheel drives the second and third segments to rotate. It can be seen that there are many combinations of the driving modes of the segmented first and second roller brushes, which can be selected according to the specific application requirements in practice, which is not limited in the embodiment of this disclosure.

In the above embodiments, the driving motor 143 drives the rear wheel of the traveling mechanism to realize traveling. In fact, the driving motor 143 can also drive the front wheel to realize traveling of the traveling mechanism.

With reference to FIGS. 2-9, in some embodiments, the first and second roller brushes of the cleaning mechanism are driven by two front wheels to rotate, and the number of driving motors 143 is one. The driving motors 143 are arranged in the first roller brush 151, and the first roller brush 151 is rotationally connected with the driving motor 143, so that the first roller brush 151 does not rotate with the driving motor 143, and the axis of the first roller brush 151 coincides with the driving motor 143. The driving motor 143 is in transmission connection with the first front wheel at one axial end of the first roller brush 151, the other axial end of the first roller brush 151 is in transmission connection with the second front wheel, one rotating shaft end of the second roller brush is in transmission connection with the first front wheel, and the other rotating shaft end of the second roller brush is in transmission connection with the second front wheel. When the driving motor 143 rotates, it drives the first front wheel to rotate, and the rotation of the first front wheel drives the second roller brush to rotate, and simultaneously drives the first crawler belt and the first rear wheel to rotate; the rotation of the second roller brush drives the second front wheel to rotate, and the rotation of the second front wheel drives the first roller brush 151 and simultaneously drives the second crawler belt and the second rear wheel to rotate.

In another embodiment, a front wheel and a driving motor 143 drive the first and second roller brushes of the cleaning mechanism to rotate. With reference to FIG. 9, the number of driving motors 143 is one, and the driving motor 143 is arranged in the first roller brush 151, which is relatively fixedly connected with the driving motor 143, so that the first roller brush 151 rotates together with the driving motor 143, and the first roller brush 151 is connected with the driving motor 143. The driving motor 143 is in transmission connection with the first front wheel at one axial end of the first roller brush 151, while the other axial end of the first roller brush 151 is rotatively supported and connected with the second front wheel. One end of the rotating shaft of the second roller brush is in transmission connection with the first front wheel, and the other side of the rotating shaft of the second roller brush is in transmission connection with the second front wheel. When the driving motor 143 rotates, it drives the first roller brush 151 and the first front wheel to rotate, and the rotation of the first front wheel drives the second roller brush to rotate, and simultaneously drives the first crawler belt and the first rear wheel to rotate; the rotation of the second roller brush drives the second front wheel to rotate, and the rotation of the second front wheel drives the second crawler belt and the second rear wheel to rotate.

Wherein, the transmission connection between the driving motor 143 and the front wheel is not unique. For example, with reference to FIGS. 4 and 6, in one embodiment, the front wheel is provided with first external teeth 1411 and central teeth 1414, the driving motor 143 is engaged with the central teeth 1414 on the first front wheel through a driving gear 1431, the first roller brush 151 is engaged with the central teeth 1414 of the second front wheel through the first roller brush gear 1511 arranged on the rotating shaft, and the two ends of the rotating shaft of the second roller brush are respectively provided with the second roller brush gears 1521, and the two sections of the second roller brush gears 1521 are respectively in transmission connection with the central teeth 1414 of the first front wheel and the second front wheel through a transition gear.

In another embodiment, the front wheel is provided with first external teeth 1411, second external teeth 1412 and internal teeth 1413, the driving motor 143 is engaged with the external tooth or internal tooth 1413 on the first front wheel through a driving gear 1431 for transmission, the first roller brush 151 is engaged with the external tooth or internal tooth 1413 of the second front wheel through a first roller brush gear 1511 arranged on a rotating shaft for rotation;

- the two ends of the rotating shaft of the second roller brush are respectively provided with second roller brush gears 1521, and the two sections of second roller brush gears 1521 are respectively driven by the engagement of internal teeth 1413 or external teeth of the first front wheel and the second front wheel. Of course, the rear wheel is provided with at least the first external teeth 1411, and the front wheel and the rear wheel are engaged with the tooth spaces 1421 on the crawler belt through their respective first external teeth 1411 for transmission.

In addition, the first roller brush 151 and the driving motor 143 are relatively fixedly connected in different ways, for example, the output shaft of the driving motor 143 is connected with the rotating shaft of the first roller brush 151 by shaft, key or coupling. Similarly, the way of relative rotation connection between the first roller brush 151 and the driving motor 143 is not unique. For example, the output shaft of the driving motor 143 is bearing-connected with the rotating shaft of the first roller brush 151.

In the embodiment of the present disclosure, the driving motor 143 is arranged in the roller brush to drive the front wheel on one side of the traveling mechanism to rotate and drive one of the roller brushes to rotate, so that one of the roller brushes drives the front wheel on the other side to rotate and drives the other roller brush to rotate, so that not only the traveling driving on both sides of the traveling mechanism and the opposite rotation of the two roller brushes are realized, but also the driving motor 143 is arranged in the roller brush, which reduces the occupation of the internal space of the machine body and frees up more useful space for the machine body, so as to make the filter box volume larger.

In some embodiments, combined with FIG. 2 and FIG. 9, the driving motor 143 is arranged in one of the roller brushes, which can be a waterproof motor itself, with a sleeve across the whole roller brush outside, and the motor is fixed in the sleeve; or the driving motor 143 itself is not waterproof, and is fixedly arranged in the sleeve to waterproof both ends of the sleeve; the motor sleeve can be arranged on the machine body, that is, it is fixedly connected with the machine body through one or both ends of the sleeve, and the first roller brush 151 is sleeved outside the motor sleeve and can rotate relatively.

In addition, the driving motor 143 may also be arranged in the second roller brush, and the embodiment is the same as that of the driving motor 143 arranged in the first roller brush 151, and the details are not repeated here.

With reference to FIGS. 2-10, in some embodiments, the number of driving motors 143 is two, and the two driving motors 143 are correspondingly arranged in the two roller brushes, that is, the driving motors 143 include a first driving motor 143 and a second driving motor 143, the first driving motor 143 is arranged in the first roller brush 151, and the second driving motor 143 is arranged in the second roller brush.

In one embodiment, two roller brushes are driven by a driving motor 143 and a front wheel. With reference to FIG. 10, the first roller brush 151 is coaxially and fixedly connected with the first driving motor 143, the second roller brush is coaxially and movably connected with the second driving motor 143; the first roller brush 151 rotates with the first driving motor 143, the first driving motor 143 is in transmission connection with the first front wheel, one end of the rotating shaft of the second roller brush in transmission connection with the first front wheel, and the second driving motor 143 is in transmission connection with the second front wheel at the other end of the rotating shaft of the second roller brush. When the first driving motor 143 rotates, it drives the first roller brush 151 and the first front wheel to rotate. The rotation of the first front wheel drives the second roller brush to rotate, and simultaneously drives the first crawler belt and the first rear wheel to rotate. The second front wheel is driven by the second driving motor 143, and the rotation of the second front wheel drives the second crawler belt and the second rear wheel to rotate together.

In another embodiment, two roller brushes are driven by two driving motors 143. With reference to FIG. 10, the first roller brush 151 is coaxially and fixedly connected with the first driving motor 143, and rotates together with the first driving motor 143, and the second roller brush is coaxially and fixedly connected with the second driving motor 143, and rotates together with the second driving motor 143; the first driving motor 143 is in transmission connection with the first front wheel at one end of the rotating shaft of the first roller brush 151, and the other end of the rotating shaft of the first roller brush 151 is rotatably supported and connected with the second front wheel. The second driving motor 143 is in transmission connection with the second front wheel at one end of the rotating shaft of the second roller brush, and the other end of the rotating shaft of the second roller brush is rotatably supported and connected with the first front wheel. When the first driving motor 143 rotates, it drives the first roller brush 151 and the first front wheel to rotate. The rotation of the first front wheel drives the second roller brush to rotate and simultaneously drives the first crawler belt and the first rear wheel to rotate. When the second driving motor 143 rotates, it drives the second roller brush and the second front wheel to rotate, and the rotation of the second front wheel drives the second crawler belt and the second rear wheel to rotate together.

Wherein, the drive motor 143 is connected with the front wheel in a different transmission way. For example, referring to FIGS. 3 and 4, in one embodiment, the front wheel is provided with first external teeth 1411 and central teeth 1414. If two drive motors 143 drive two roller brushes to rotate, the first drive motor 143 is engaged with the central teeth 1414 on the first front wheel through a first driving gear 1431 for transmission, and the second driving motor 143 is engaged with the central tooth 1414 on the second front wheel through the second transition gear by the second driving gear 1431. If one driving motor 143 and one front wheel drive two roller brushes to rotate, the first driving motor 143 is engaged with the central teeth 1414 on the first front wheel through the first driving gear 1431 for transmission, and the second driving motor 143 is engaged with the central teeth 1414 on the second front wheel through the second transition gear by the second driving gear 1431 for transmission. The rotating shaft on the second roller brush is provided with a roller brush gear, and the roller brush gear is in engagement transmission connection with the central tooth 1414 of the first front wheel through the first transition gear. In another embodiment, the front wheel is provided with first external teeth 1411, second external teeth 1412 and internal teeth 1413. If two driving motors 143 drive two roller brushes to rotate, the first driving motor 143 is engaged with the external teeth 1413 on the first front wheel through a driving gear 1431 for transmission, and the second driving motor 143 is engaged with the internal teeth 1413 or external teeth on the second front wheel through the second driving gear 1431 for transmission. If a driving motor 143 and a front wheel drive two roller brushes to rotate, the first driving motor 143 is in engaged with the external teeth or internal teeth 1413 on the first front wheel through a driving gear 1431 for transmission, and the second driving motor 143 is engaged with the internal teeth 1413 or external teeth on the second front wheel through the second driving gear 1431 for transmission. The rotating shaft of the second roller brush is provided with a roller brush gear, and the second roller brush is engaged with the internal teeth 1413 or the external teeth of the first front wheel through the roller brush gear on the rotating shaft for transmission. Of course, the rear wheel is provided with at least the first external teeth 1411, and the front wheel and the rear wheel are engaged with the tooth spaces 1421 on the crawler belt through their respective first external teeth 1411 for transmission.

In the embodiment of the present disclosure, the two driving motors 143 are arranged in the two rolling brushes to drive the two sides of the traveling mechanism to travel, and the two rolling brushes rotate in opposite directions, which not only reduces the occupation of the machine space by the driving motors 143, but also frees up more spare machine space for the cleaning device, so as to make the filter box larger and improve the cleaning ability of the cleaning device, but also can realize differential traveling driving on both sides of the traveling mechanism, and provide a turning function on the bottom and the wall of the pool for the device, and thus the functions are comprehensive.

Referring to FIG. 11, in some embodiments, the first roller brush 151 and the second roller brush 152 each include a rotating shaft 153, a shaft sleeve 154 and blades 155, wherein the shaft sleeve 154 is sleeved on the rotating shaft 153, and the number of blades 155 is multiple; and one end of each blade 155 is circumferentially connected to the shaft sleeve 154, and the other end is a free end; or the blades 155 are formed on a base, which is arranged around the shaft sleeve or the rotating shaft 153 to form an axial rolling brush shape. When the first roller brush 151 and the second roller brush 152 rotate, the blades 155 on the two roller brushes do not interfere or interfere. In one embodiment, when the first roller brush 151 and the second roller brush 152 rotate, the blades 155 on the two roller brushes interfere with each other, so that the suction pressure generated by the fluid pumping apparatus 130 can be better concentrated in the middle area of the two roller brushes, so that the suction force is greater. At the same time, for large-particle garbage, the interference of the roller brush blades can also improve the garbage lifting ability, so that the water flow near the water inlet 111 can be effectively sucked and filtered, so as to improve the cleaning device 100. In another embodiment, the blades 155 on the two roller brushes do not interfere, which can reduce the working noise and save energy.

With reference to FIG. 12, the distance between the closest points of the shaft sleeves 154 of the two roller brushes is L, and the lengths of the blades 155 of the two roller brushes are d1 and d2, respectively. Assuming that the gap between the blades 155 of the two roller brushes is g, g=L−d1−d2. It can be seen that when g<0, it means that the blades 155 on the two roller brushes interfere; when g≥0, it means that the blades 155 on the two roller brushes do not interfere.

In one embodiment, it is assumed that the width of the water inlet 111 is G, and in general, G>g, because the smaller g can ensure the negative pressure between the two roller brushes, while the larger G can provide the larger-sized garbage to be sucked normally.

In addition, in actual applications, swimming pool cleaning machine is a kind of device specially used for cleaning and maintaining the water quality of swimming pool. It is generally designed to move on the bottom and wall of the pool, and use brushes or roller brushes to move on the bottom and wall of the pool to scrub dirt, then remove impurities, dirt and other garbage at the bottom of the pool by adsorption and filtration, and finally discharge clean water back into the pool to achieve the purpose of cleaning the pool. However, in actual use, it is found that in the process of cleaning the bottom and wall of the existing machine, the brush or roller will not be completely cleaned on some uneven surfaces, and at the same time, the dirt stirred by the brush is not easy to be sucked into the machine, and the remaining dirt will spread to the surrounding water, therefore the cleaning effect is not good. Therefore, those skilled in the art hope to optimize and improve the cleaning system of the swimming pool cleaning machine to further improve the cleaning ability of the machine.

In view of the above problems, the following embodiments of the application provide a cleaning system and a swimming pool cleaning device.

With reference to FIGS. 13 and 14, an embodiment of the present disclosure provides a cleaning system, including at least two roller brushes 11 and a roller driving source, wherein the at least two roller brushes 11 are arranged in parallel, and an opening 12 is opened at the bottom of the corresponding swimming pool cleaning device (hereinafter referred to as device), such as a bottom shell 21, between the rotating shafts of the at least two roller brushes 11 arranged in parallel, and the opening 12 is at least one of the water inlets in fluid communication with the filtering system inside the swimming pool cleaning device; the roller brush driving source is in transmission connection with at least two roller brushes 11 through at least one transmission structure to drive the at least two roller brushes 11 to rotate in opposite directions.

With reference to FIG. 2, the opening 12 at the bottom of the device is arranged on the bottom shell 21, and the bottom shell 21 is also provided with two roller brush bins 211 in the width direction of the opening 12 for installing the roller brushes 11. In some embodiments, the number of the roller brushes 11 can be selected as two, that is, including a first roller brush 151 and a second roller brush 152. The cleaning system is applied to a swimming pool cleaning device, and the surface to be cleaned, such as the bottom or wall of the pool, which the device passes through is brushed by the rotation of the roller brushes 11. During the working process, both the first roller brush 151 and the second roller brush 152 are in contact with the surface to be cleaned. At the same time, the wall of the roller brush bin 211 or the side wall of the cleaning device arranged at both ends of the two roller brushes 11 is close to the ground, or the brush or soft glue is arranged at the wall of the roller brush bin 211 or the side wall of the cleaning device close to the surface to be cleaned to contact with the surface to be cleaned, thus forming a relatively closed negative pressure space, which can more effectively suck the dust-laden water in the space into the device, prevent the stirred dirt from being suspended in the water and not being effectively cleaned, and improve the underwater cleaning ability of the device. In addition, when the negative pressure increases, it is allowed to design the device with the bottom properly away from the surface to be cleaned, so as to improve the site height of the device and thus improve the obstacle-crossing ability of the device.

With reference to FIGS. 2 and 3, in some embodiments, the roller brush 11 includes a rotating shaft 153, a shaft sleeve 154 and blades 155, wherein the shaft sleeve 154 is sleeved on the rotating shaft 153, and the number of the blades 155 is multiple; one end of each blade 155 is circumferentially connected to the shaft sleeve 154, and the other end is a free end; or the blade 155 is formed on a base which is arranged around the shaft sleeve 154 or the rotating shaft 153 to form an axial roller brush shape. When the first roller brush 151 and the second roller brush 152 rotate, the blades 155 on the two roller brushes do not interfere or interfere. In one embodiment, when the first roller brush 151 and the second roller brush 152 rotate, the blades 155 on the two roller brushes interfere with each other, which is more conducive to forming a relatively closed negative pressure space, so that the suction pressure generated by the filter system can be better concentrated in the middle area between the two roller brushes, thus the suction force is greater. At the same time, for large-particle garbage, the interference of the blades 155 of the roller brush 11 can also improve the garbage lifting capacity, so that the water flow near the water inlet can be effectively sucked and filtered to improve the cleaning. In another embodiment, the blades 155 on the two roller brushes do not interfere, which can reduce the working noise and save energy.

With reference to FIG. 4, the distance between the center points of the rotating shafts 11A of the two roller brushes 11 is L, and the lengths of the blades 155 of the two roller brushes 11 are d1 and d2, respectively. Assuming that the minimum gap between the blades 155 of the two roller brushes 11 is g, g=L−d1−d2. It can be seen that when g<0, it means that the blades 155 on the two roller brushes interfere; when g≥0, it means that the blades 155 on the two roller brushes do not interfere. The above minimum gap indicates the distance between the ends of the corresponding blades on the two roller brushes 11 when the ends of the blades on the two roller brushes 11 are on the connecting line of the rotating shafts 11A of the two roller brushes 11.

In one embodiment, the width of the opening 12 is greater than or equal to the spacing between the circumferential profiles of two adjacent roller brushes 11 located on both sides of the opening 12 in the width direction, that is, assuming the width of the water inlet is G, generally, G≥g, because the smaller g can ensure the negative pressure between the two roller brushes 11, while the larger G can provide the larger-sized garbage to be sucked normally. It can be understood that G≤L can be set, which can ensure the flow rate of the suction water flow.

With reference to FIGS. 1, 2 and 4, in some embodiments, when the device is on a surface to be cleaned, the projection of the opening 12 on the surface to be cleaned at least partially coincides with the projection of the spacing between the ends of the blades 155 of the two roller brushes on the surface to be cleaned; and the opening 12 is further away from the front end of the cleaning device in the traveling direction than this spacing. When the device is cleaned, the roller brush is in motion when the garbage on the surface to be cleaned is rolled into the opening 12. Due to inertia, setting the position of the opening farther away from the front end of the cleaning device in the traveling direction can make the garbage more easily align with the opening, so as to smoothly enter the opening.

With reference to FIG. 5, in some embodiments, the driving source of the roller brush includes a traveling mechanism of the swimming pool cleaning device; as shown in FIG. 5, the traveling mechanism includes a traveling wheel 141, a crawler belt 142, and a driving motor 143. The traveling wheel 141 at least includes a first front wheel 2311, a second front wheel 2312, and a first rear wheel 2313 and a second rear wheel 2314. The first crawler belt is sleeved on the peripheries of the first front wheel 2311 and the first rear wheel 2313, and the second crawler belt is sleeved on peripheries of the second front wheel 2312 and the second rear wheel 2314. The number of driving motors 143 is at least one, for example, one or two, and at least one driving motor 143 is in transmission connection with at least one traveling wheel 141.

At least two roller brushes 11, including the first roller brush 151 and the second roller brush 152, are arranged between the first front wheel 2311 and the second front wheel 2312, and can be driven to rotate by the first front wheel 2311 or/and the second front wheel 2312 through at least one transmission structure; or at least two roller brushes 11 can be directly driven to rotate by at least one driving motor 143 through at least one transmission structure; or at least two roller brushes 11 can be driven to rotate by at least one driving motor 143 and a front wheel through at least one transmission structure. The traveling mechanism enables the device to walk on the bottom or surface of the pool. Using the traveling mechanism as the driving source of the roller brush of the cleaning system, the roller brush 11 can rotate with the traveling movement of the device, thus achieving the effect of cleaning while traveling.

Of course, the traveling mechanism of the device is not limited to the structure shown in FIG. 5, but can also be realized in other structures. For example, in one embodiment, the traveling mechanism only includes a traveling wheel 141 and a driving motor 143, which directly drives the traveling wheel 141 to rotate to realize traveling. At this time, the traveling wheel 141 can also be used as the roller brush driving source to drive the roller brush 11 to rotate.

With reference to FIG. 6, in some embodiments, at least one circle of external teeth, including a first external tooth 1411 and a second external tooth 1412, are arranged side by side along the axial direction of the traveling wheel 141, and the inner side of the traveling wheel 141 is provided with internal teeth 1413.

With reference to FIG. 7, in some embodiments, the traveling wheel 141 is provided with external teeth and central teeth 1414, the axes of which coincide with the axis of the traveling wheel 141, and the external teeth are arranged on the outer periphery of the traveling wheel 141, and the central teeth 1414 re arranged on the rotating shaft at one side of the traveling wheel 141. For example, the external teeth in FIG. 7 can be selected as the first external teeth 1411 in FIG. 6, and the central teeth 1414 are axially and fixedly connected to one side of the traveling gear, and the central teeth 1414 coincide with the axis of the traveling wheel 141.

Actually, at least one of the first front wheel 2311, the second front wheel 2312, the first rear wheel 2313 and the second rear wheel 2314 in the traveling mechanism can be the traveling wheel 141 with the structure shown in FIG. 6 or the traveling wheel 141 with the structure shown in FIG. 7. Of course, the traveling wheel 141 can also be realized as a combination of at least one of the first external teeth 1411, the second outer teeth 231B, the internal teeth 1413 and the central teeth 1414. For example, in one embodiment, only the first external teeth 1411 are provided on the traveling wheel 141 for driving connection with the crawler belt 142; or the traveling wheel 141 is provided with first external teeth 1411, second external teeth 1412, internal teeth 1413 and central teeth 1414.

With reference to FIGS. 5-7, in one embodiment, when the crawler belt 142 is sleeved on the periphery of the traveling wheel 141, the crawler belt 142 is provided with tooth spaces 1421, which are matched with the first external teeth 1411, and the first external teeth 1411 are embedded in the tooth spaces 1421, so that the crawler belt 142 and the traveling wheel 141 form a close connection in the circumferential direction. When the traveling wheel 141 rotates, the first external teeth 1411 and the tooth spaces 1421 are mutually limited and locked, so that the crawler belt 142 is pulled or pushed to roll; when the crawler belt 142 rolls, the tooth spaces 1421 on the crawler belt 142 and the external teeth (such as the first external teeth 1411) on the traveling wheel 141 are mutually limited and locked, so that the traveling wheel 141 is pulled or pushed to rotate.

With reference to FIGS. 5-7, in one embodiment, when the driving motor 143 is in gear transmission with the traveling wheel 141, a driving gear 1431 is arranged on the output shaft of the driving motor 143. The driving gear 1431 is engaged and matched with the external teeth (such as the second external teeth 1412), the internal teeth 1413 or the central teeth 1414 on the traveling wheel 141, and when the driving motor 143 rotates, the driving gear 1431 is engaged with the external teeth (such as the second external teeth 1412), the internal teeth 1413 or the central teeth 1414 on the traveling wheel 141 to drive the traveling wheel 141 to rotate.

With reference to FIG. 1, FIG. 3, FIG. 6 and FIG. 7, in one embodiment, when the roller brush 11 is in transmission connection with the traveling wheel 141, a roller brush gear is arranged at one end of the rotating shaft of the roller brush 11, and the roller brush gear is engaged with the external teeth (such as the second external teeth 1412), the internal teeth 1413 or the central teeth 1414 on the traveling wheel 141. When the traveling wheel 141 rotates, the external teeth, the internal teeth 1413 or the central teeth 1414 can be engaged with the roller brush gear to drive the roller brush 11 to rotate; alternatively, when the roller brush 11 rotates, the traveling wheel 141 is driven to rotate through the engagement transmission connection between the roller brush gear and the external teeth, the internal teeth 1413 or the central teeth 1414.

Wherein, the embodiment in which the driving motor 143 is in transmission connection with the traveling wheel 141 to realize the traveling of the traveling mechanism on at least one side is not unique.

For example, in one embodiment, with reference to FIG. 8, at one side of the traveling mechanism, the rear wheel is provided with at least internal teeth 1413, the front wheel is provided with internal teeth 1413 and external teeth, the output end of the driving motor 143 is engaged with the internal teeth 1413 of the rear wheel through a driving gear 1431 for transmission, one end of the rotating shaft of the first roller brush 151 is provided with a first roller brush gear 1511, and one end of the rotating shaft of the second roller brush 152 is provided with a second roller brush gear 1521. The first roller brush gear 1511 and the second roller brush gear 1521 are respectively engaged with the external teeth and the internal teeth 1413 of the front wheel for transmission. When the motor rotates, the rear wheel is driven to rotate, and the rotation of the rear wheel drives the crawler belt 142 to roll, and the rolling of the crawler belt 142 drives the front wheel to rotate, thus realizing the rolling traveling of the crawler belt 142 on one side of the traveling mechanism; at the same time, the rotation of the front wheel also drives the two roller brushes to rotate in opposite directions. On the other side of the traveling mechanism, the same driving structure can also be used to make the crawler belt 142 on the other side of the traveling mechanism roll, but at this time, the roller brush does not need to be driven by the traveling mechanism; in addition, the rolling motion of the crawler belts 142 on both sides of the traveling mechanism is independently driven by different motors, so that the crawler belts 142 on both sides of the traveling mechanism can roll at the same speed or at different speeds. When the crawler belts 142 on both sides roll at the same speed, the device walks in an approximately straight line; when the crawler belts 142 on both sides roll at different speeds, the device will turn around.

Of course, the traveling mechanism can also have other driving solutions to realize the rolling traveling of the crawler belts on both sides, which is not limited to the solution shown in FIG. 8, which is not limited in the embodiment of this disclosure.

In some embodiments, at least two roller brushes 11 can be driven to rotate by a front wheel, such as a first front wheel 2311 or a second front wheel 2312, through at least one transmission structure. Referring to FIG. 8, the roller brush 11 includes a first roller brush 151 and a second roller brush 152. The first roller brush 151 is in transmission connection with the first front wheel 2311 or the second front wheel 2312 through a first transmission structure; the second roller brush 152 is in transmission connection with the first front wheel 2311 or the second front wheel 2312 through a second transmission structure, which is different from the second transmission structure. When the first or second front wheel 2312 rotates, it drives the first roller brush 151 and the second roller brush 152 to rotate in opposite directions. Of course, if a rear wheel drives two roller brushes to rotate, the situation is the same as that of the front wheel, which will not be described in detail here.

Wherein, the difference between the first transmission structure and the second transmission structure can be the difference of physical structure or the difference of transmission result. For example, if the first transmission structure is a gear transmission structure, the physical differences between the first and second transmission structures may include, but are not limited to, the number of gears, or the positions or meshing relationships of gears. For another example, if the transmission results are different, in terms of the rotation directions of the first roller brush 151 and the second roller brush 152, if the first transmission structure transmits the rotation of the first front wheel 2311 to the first roller brush 151, so that the rotation direction of the first roller brush 151 is the same as or opposite to the rotation direction of the first front wheel 2311, then the second transmission structure transmits the rotation of the first front wheel 2311 to the second roller brush 152, so that the rotation direction of the second roller brush 152 is opposite to or the same as that of the first front wheel 2311, which may ensure that the first roller brush 151 and the second roller brush 152 rotate in opposite directions

Referring to FIG. 8, in one embodiment, the first transmission structure includes a first roller brush gear 1511 disposed at one end of the rotating shaft of the first roller brush 151; the first front wheel 2311 or the second front wheel 2312 is provided with external teeth and internal teeth 1413, and the first roller brush gear 1511 is in engagement transmission connection with the external teeth of the first or second front wheel 2312, so that the rotation directions of the first roller brush 151 and the first or second front wheel 2312 are opposite. The second transmission structure includes a second roller brush gear 1521, which is arranged at one end of the rotating shaft of the second roller brush 152; the first front wheel 2311 or the second front wheel 2312 is provided with external teeth and internal teeth 1413, and the second roller brush gear 1521 is in engagement transmission connection with the internal teeth 1413 of the first or second front wheel 2312, so that the second roller brush 152 and the first or second front wheel 2312 rotate in the same direction. It can be seen that the first or second front wheel 2312 drives the first roller brush 151 and the second roller brush 152 to rotate through the first transmission structure and the second transmission structure, so that the rotation directions of the first roller brush 151 and the second roller brush 152 are opposite, and they always rotate in opposite directions no matter which direction the first or second front wheel 2312 rotates.

Of course, the first transmission structure may also be the engagement transmission connection between the first roller brush gear 1511 and the internal teeth 1413 of the first or second front wheel 2312, while the second transmission structure is the engagement transmission connection between the second roller brush gear 1521 and the external teeth of the first or second front wheel 2312, which is equivalent to the result of interactive transmission, and can also realize the opposite rotation of the first and second roller brushes 112. However, for the purpose of better collecting the garbage in the water, the transmission structure shown in FIG. 8 can be used in practice, so that when the traveling mechanism moves forward, both the first and second roller brushes 112 rotate in the direction of the opening 12, so as to quickly roll the garbage into the opening 12.

With reference to FIG. 9, in another embodiment, the first transmission structure includes a first roller brush gear 1511, which is arranged at one end of the rotating shaft of the first roller brush 151, and the first front wheel 2311 or the second front wheel 2312 is provided with central teeth 1414, and the first roller brush gear 1511 is in engagement transmission connection with the central teeth 1414 of the first or second front wheel 2312, so that the first roller brush 151 and the first roller brush 2312 are connected with each other. The second transmission structure includes a second roller brush gear 1521, which is arranged at one end of the rotating shaft of the second roller brush 152; the first front wheel 2311 or the second front wheel 2312 is provided with central teeth 1414, and the second roller brush gear 1521 is in engagement transmission connection with the central teeth 1414 of the first or second front wheel 2312 through a transition gear 14, so that the second roller brush 152 and the first or second front wheel 2312 rotate in the same direction. It can be seen that the first or second front wheel 2312 drives the first and second roller brushes to rotate through two different transmission structures, so that the first and second roller brushes keep rotating in opposite directions when the traveling mechanism travels. Of course, the first transmission structure and the second transmission structure can also be interchanged, and the opposite rotation of the first and second roller brushes can also be realized, which will not be described here.

It can be understood that the first or second front wheel 2312 is the direct driving source to drive the roller brush to rotate through the transmission structure. As for how the first and second front wheels 2312 are driven to travel in the traveling mechanism, this disclosure embodiment will not discuss this.

In some embodiments, at least two roller brushes can be driven to rotate by two front wheels, such as a first front wheel 2311 and a second front wheel 2312, through at least one transmission structure. The first roller brush 151 is in transmission connection with the first front wheel 2311 through a first transmission structure; the second roller brush 152 is in transmission connection with the second front wheel 2312 through a second transmission structure; the first transmission structure is different from the second transmission structure; when the first and second front wheels 2312 rotate, the first roller brush 151 and the second roller brush 152 are driven to rotate in opposite directions.

Here, one front wheel drives a roller brush to rotate. Because the two front wheels rotate in the same direction when the traveling mechanism rolls, one front wheel drives a roller brush to rotate in one direction, and the other front wheel drives the other roller brush to rotate in the opposite direction, so as to realize the opposite rotation of the two roller brushes. It can be seen that the first transmission structure and the second transmission structure are different, and the movement directions of the two for transmission by engaging the front wheel are opposite.

With reference to FIG. 8, in one embodiment, the first transmission structure here may include a first roller brush gear 1511, which is arranged at one end of the rotating shaft of the first roller brush 151; the first front wheel 2311 is provided with external teeth and internal teeth 1413, and the first roller brush gear 1511 is in engagement transmission connection with the external teeth of the first front wheel 2311, so that the rotation directions of the first roller brush 151 and the first front wheel 2311 are opposite. Correspondingly, at this time, the second transmission structure includes a second roller brush gear 1521, which is arranged at one end of the rotating shaft of the second roller brush 152; the second front wheel 2312 is provided with external teeth and internal teeth 1413, and the second roller brush gear 1521 is in engagement transmission connection with the internal teeth 1413 of the second front wheel 2312, so that the rotation directions of the second roller brush 152 and the second front wheel 2312 are the same.

In addition, when the first front wheel 2311 and the second front wheel 2312 are provided with the central teeth 1414, the first transmission structure and the second transmission structure can refer to the embodiment shown in FIG. 9, and the only difference between them is whether the first transmission structure and the second transmission result are separated, and the motion transmission effect is the same, which is not repeated here.

In some embodiments, two front wheels, such as the first front wheel 2311 and the second front wheel 2312, can drive at least two roller brushes to rotate through at least one transmission structure. Referring to FIG. 11, at least two roller brushes include two groups, each group includes a first-section roller brush and a second-section roller brush, which is equivalent to four roller brushes, wherein the first-section roller brush and the second-section roller brush are connected in a circumferential direction; the first-section roller brushes of the two groups are respectively in transmission connection with the first front wheel 2311 through a first transmission structure; the second-section roller brushes of the two groups are respectively in transmission connection with the second front wheel 2312 through a second transmission structure, wherein the first transmission structure and the second transmission structure are the same; when the first front wheel 2311 rotates, it drives the first-section roller brushes of the two groups to rotate in opposite directions; when the second front wheel 2312 rotates, it drives the second-section roller brushes of the two groups of to rotate in opposite directions.

Since the first and second front wheels 2312 each drive one section of the two groups of roller brushes, the transmission structures on both sides of the traveling mechanism can adopt the same structure.

For example, with reference to FIG. 8, in one embodiment, the first transmission structure here may include a first roller brush gear 1511 and a second roller brush gear 1521, wherein the first roller brush gear 1511 is arranged at one end of the rotating shaft of the first-section roller brush of the first group; the second roller brush gear 1521 is arranged at one end of the rotating shaft of the first-section roller brush of the second group; the first front wheel 2311 is provided with at least internal teeth 1413 and external teeth, and the first roller brush gear 1511 is in engagement transmission connection with the external teeth on the first front wheel 2311, so that the first-section roller brush of the first group and the first front wheel 2311 rotate in opposite directions; the second roller brush gear 1521 is in engagement transmission connection with the internal teeth 1413 on the first front wheel 2311, so that the first-section roller brush of the second group rotates in the same direction as the first front wheel 2311, so that the first-section roller brushes of the two groups rotates in opposite directions.

For another example, in combination with FIG. 9, in one embodiment, the first transmission structure here may further include a first roller brush gear 1511 and a second roller brush gear 1521, wherein the first roller brush gear 1511 is arranged at one end of the rotating shaft of the first-section roller brush of the first group; the second roller brush gear 1521 is arranged at one end of the rotating shaft of the first-section roller brush of the second group; the first front wheel 2311 is provided with at least central teeth 1414, and the first roller brush gear 1511 is in engagement transmission connection with the central teeth 1414 on the first front wheel 2311, so that the first-section roller brush of the first group and the first front wheel 2311 rotate in opposite directions; the second roller brush gear 1521 is in engagement transmission connection with the central teeth 1414 on the first front wheel 2311 through a transition gear 14, so that the first-section roller brush of the second group rotates in the same direction as the first front wheel 2311, so that the first-section roller brushes of the two groups rotates in opposite directions.

It can be understood that since the second transmission structure is the same as the first transmission structure, it will not be described in detail here.

In some embodiments, the at least two roller brushes can be driven to rotate by a driving motor 143 and a front wheel, such as the first front wheel 2311 or the second front wheel 2312, through at least one transmission structure. With reference to FIG. 12, the traveling mechanism includes a driving motor 143, which is arranged in the first or second roller brush 152, and the first or second roller brush is fixedly connected with the driving motor 143 and rotates together with the driving motor 143. The driving motor 143 is in transmission connection with the first or second front wheel 2312 through the first transmission structure, and the second roller brush 152 is in transmission connection with the first or second front wheel 2312 through the second transmission structure. When the driving motor 143 rotates, it drives the first or second roller brush and the first or second front wheel 2312 to rotate, and the rotation of the first or second front wheel 2312 drives the second or first roller brush to rotate.

With reference to FIGS. 5, 6, 7, 8 and 12, the first transmission structure includes a driving gear 1431, which is arranged on the output shaft of a driving motor 143, and at least one of internal teeth 1413, external teeth or central teeth 1414 is arranged on the first or second front wheel. The driving gear 1431 is in engagement transmission connection with the internal teeth 1413 or the external teeth or the central teeth 1414 on the first or second front wheel. The driving motor 143 drives the first or second front wheel 2312 to rotate through this first transmission structure, and the roller brush (for example, the first or second roller brush) where the driving motor 143 is located will rotate together.

Accordingly, in combination with FIGS. 5, 6, 7, 8 and 12, if the driving motor 143 is arranged in the first roller brush 151, the second transmission structure includes a roller brush gear 13 arranged at one end of the rotating shaft of the second roller brush 152 and in engagement transmission connection with the internal teeth 1413 or external teeth or central teeth 1414 on the first or second front wheel. Wherein, if the driving gear 1431 is engaged with the internal teeth 1413, then in the second transmission structure, the roller brush gear 13 should be engaged with the external gear, or the roller brush gear 13 should be engaged with the central teeth 1414; in addition, if the driving gear 1431 is engaged with the external teeth or the central teeth 1414, the roller brush gear 13 is also engaged with the corresponding gear to ensure that the first roller brush 151 and the second roller brush 152 rotate in opposite directions.

In some embodiments, at least two roller brushes can be driven to rotate by two driving motors 143, such as the first driving motor and the second driving motor, through at least one transmission structure. With reference to FIG. 13, the traveling mechanism includes two driving motors 143, namely the first driving motor and the second driving motor. The first driving motor is arranged in the first roller brush 151, and the first roller brush 151 is fixedly connected with the first driving motor and rotates together with the first motor; the second driving motor is arranged in the second roller brush 152, and the second roller brush 152 is fixedly connected with the second driving motor and rotates together with the second motor.

In this driving embodiment, the roller brush is fixedly connected with the driving motor 143, and when the driving motor 143 rotates, it will drive the roller brush to rotate together. Wherein, the output shaft of the driving motor 143 is fixedly connected with the rotating shaft of the roller brush in different ways, and in some connection structures, the transmission structure may not be adopted, for example, the output shaft of the driving motor 143 is shaft-connected with the rotating shaft of the roller brush. In other connection structures, a transmission structure can be adopted. For example, the output shaft of the driving motor 143 and the rotating shaft of the roller brush can be connected in a transmission way through a reduction gear set, and the specific implementation of the reduction gear set is different, which is not limited by the embodiment of this disclosure.

In some embodiments, the roller brush driving source may also include at least one roller brush motor, and at least two roller brushes are rotationally connected by the at least one roller brush motor through at least one transmission structure to drive the at least two roller brushes to rotate. Here, the roller brush motor is unrelated with the traveling mechanism, but is a conversion motor that drives the roller brush to rotate, and the transmission structure between the roller brush motor and the roller brush can be a gear transmission structure or a belt transmission structure, etc., which is not limited by the embodiment of this disclosure.

In some embodiments, in combination with FIGS. 1-5, the embodiment of the present disclosure also provides a swimming pool cleaning device 2, which at least includes at least one water inlet, a filtering system 22, a traveling mechanism 23 and a cleaning system 1.

At least two parallel roller brushes 11 are at least partially arranged in at least two roller brush bins arranged at the bottom of the cleaning device; at least one water inlet is arranged between at least two roller brush bins and is in fluid communication with the filtering system; at least two parallel roller brushes are respectively driven by the traveling mechanism to rotate in opposite directions; at least two roller brushes include blades, and the minimum spacing between the ends of the blades on the two roller brushes is less than or equal to the width of the water inlet.

With reference to FIGS. 1 and 5, in some embodiments, at least two parallel roller brushes are respectively driven by the traveling mechanism to rotate in opposite directions, including one of the following: driven by a single traveling wheel, or driven by two traveling wheels respectively. The specific implementation of the roller brush driven by the traveling wheel can refer to the above-mentioned embodiment of the cleaning system, and will not be described here.

Wherein, the water inlet is arranged at the bottom of the device. In practice, there can be a plurality of water inlets, for example, two water inlets, one of which is arranged on the corresponding bottom shell between the two roller brushes at the bottom of the device, and the other is at the side of the device, especially near the front end of the device. The water inlet is in fluid communication with the filtering system, and the device generates suction force to extract the garbage near the water inlet, so that the garbage enters the filtering system together with the water flow, and the filtering system filters the garbage in the water flow to obtain clean water, which is discharged from the device and returned to the pool, so as to achieve the purpose of cleaning.

In some embodiments, in combination with FIGS. 1 and 4, the projection of the water inlet on the surface to be cleaned at least partially coincides with the projection of the spacing between the blade ends of two roller brushes on the surface to be cleaned; and the water inlets are further away from the front end of the cleaning device than the spacing. In this way, when the device performs cleaning, the roller brush is in motion when the garbage on the surface to be cleaned is drawn into the opening 12. Due to inertia, the position of the opening is set farther away from the front end of the cleaning device in the traveling direction than the spacing, so that the garbage can be more easily aligned with the opening and smoothly enter the opening.

Specifically, the traveling structure is generally arranged at the bottom of the device for pulling or pushing the device to travel on the bottom or wall of the pool. In one embodiment, combined with FIG. 1, the traveling mechanism is provided with the bottom of the device, and the cleaning system is arranged at the bottom and is connected with the traveling mechanism in a transmission way. When the device travels by the traveling mechanism, the roller brushes of the cleaning system can be driven to rotate at the same time, so as to achieve the effect of cleaning while traveling. At the same time, there is also a filtering system above the traveling mechanism. View in the traveling direction of the device, the filtering system can be arranged above the traveling mechanism near the rear end of the device, so that when the device is traveling, the filtering system extracts the dust-laden water flow from the water inlet at the bottom for filtering, and then discharges the filtered water flow to the rear. Alternatively, the filtering system can be arranged on the traveling mechanism near the middle of the device. At this time, a water spraying mechanism can also be arranged at the rear of the device. The water spraying mechanism is in fluid communication with the outlet of the filtering system, and the water flowing through the filtering system is sprayed out by the water spraying mechanism. Because the water spraying mechanism will generate a reverse thrust while spraying water, the nozzle of the water spraying mechanism can be designed to be adjustable in direction. When the device cleans the bottom or wall of the pool, the direction of the nozzle is switched to spray water roughly perpendicular to the bottom of the device, and the reverse thrust generated by the water spray generates a downward force on the device, so that the device can be more closely attached to the surface to be cleaned, and the friction between the roller brush and the surface to be cleaned is increased, so as to better wash the dirt on the surface to be cleaned; when the cleaning device cleans the water surface, the nozzle direction can be adjusted to be roughly parallel to the traveling direction, and water can be sprayed in the opposite direction of the traveling direction, and the reverse thrust generated by water spraying can be used as the auxiliary traction or propulsion force of the device.

The above is only the preferred embodiment of this disclosure, and it is not used to limit this disclosure. Any modification, equivalent substitution and improvement made within the spirit and principle of this disclosure shall be included in the protection scope of this disclosure.

Claims

1. A cleaning device, comprising a machine body, a filter box, a fluid pumping apparatus, a traveling mechanism and a cleaning mechanism, wherein the machine body is provided with a water inlet and a water outlet, the filter box is in fluid communication with the water inlet, and the fluid pumping apparatus is configured for pumping water from the water inlet to the water outlet; the traveling mechanism comprises traveling wheels, crawler belts and a driving motor, wherein the traveling wheels at least comprise a first rear wheel, a second rear wheel, a first front wheel and a second front wheel; a first crawler belt is sleeved on peripheries of the first front wheel and the first rear wheel, and a second crawler belt is sleeved on peripheries of the second front wheel and the second rear wheel; a number of the driving motor is at least one, and the driving motor is in transmission connection with at least one traveling wheel;the cleaning mechanism at least comprises a first roller brush and a second roller brush, wherein the first roller brush and the second roller brush are arranged between the first and second front wheels at intervals in parallel; the first roller brush and the second roller brush are driven by the first front wheel separately, or the first or second roller brush is driven by the first or second front wheel respectively; the first and second roller brushes rotate in opposite directions.
2. The cleaning device according to claim 1, wherein the water inlet is arranged on a corresponding bottom shell between rotating shafts of the first roller brush and the second roller brush.
3. The cleaning device according to claim 1, wherein each of the first and second roller brushes comprises a rotating shaft, a shaft sleeve and a plurality of blades, wherein the shaft sleeve is sleeved on the rotating shaft; and one end of each of the plurality of blades is circumferentially connected to the shaft sleeve; or the plurality of blades are formed on a base, wherein the base is arranged around the shaft sleeve or the rotating shaft to form an axial rolling brush shape; wherein when the first and second roller brushes rotate, the plurality of blades on the first and second roller brushes do not interfere or interfere.
4. The cleaning device according to claim 1, wherein when the first roller brush and the second roller brush are independently driven by the first front wheel, the first front wheel is provided with central teeth, the central teeth rotate coaxially; a first side of the first roller brush is provided with a first roller brush gear, and a first side of the second roller brush is provided with a second roller brush gear; and the first roller brush gear and the second roller brush gear are respectively in transmission connection with the central teeth on the first front wheel, wherein the first roller brush gear is in transmission connection with the central teeth of the first front wheel through a first transition gear, or the second roller brush gear is in transmission connection with the central teeth of the first front wheel through a second transition gear, and the first and second transition gears are arranged alternatively; a first driving motor is engaged with central teeth, internal teeth or external teeth of the first rear wheel through a first driving gear for transmission; a rotation of the first rear wheel drives the first crawler belt to roll; rolling of the first crawler belt drives the first front wheel to rotate; when the first front wheel rotates, the first and second roller brushes are driven to rotate in opposite directions.
5. The cleaning device according to claim 1, wherein when the first roller brush and the second roller brush are independently driven by the first front wheel, the first front wheel is provided with internal teeth and external teeth; a side of the first roller brush is provided with a first roller brush gear, and a side of the second roller brush is provided with a second roller brush gear; the first roller brush gear is in transmission connection with the internal teeth of the first front wheel and the second roller brush gear is in transmission connection with the external teeth of the first front wheel; or the first roller brush gear is in transmission connection with the external teeth on the first front wheel, and the second roller brush gear is in transmission connection with the internal teeth on the first front wheel; a first driving motor is engaged with central teeth, internal teeth or external teeth of the first rear wheel through a driving gear for transmission; a rotation of the first rear wheel drives the first crawler belt to roll; rolling of the first crawler belt drives the first front wheel to rotate; when the first front wheel rotates, the first and second roller brushes are driven to rotate in opposite directions.
6. The cleaning device according to claim 5, wherein a second driving motor is engaged with central teeth, internal teeth or external teeth of the second rear wheel through a second driving gear for transmission, and a rotation of the second rear wheel drives the second crawler belt to roll, and rolling of the second crawler belt drives the second front wheel to rotate; or a second side of the first roller brush or the second roller brush is provided with a third roller brush gear, and the second front wheel is provided with external teeth, internal teeth or central teeth in engagement transmission with the third roller brush gear; when the first roller brush or the second roller brush rotates, the second front wheel is driven to rotate, and a rotation of the second front wheel drives the second crawler belt and the second rear wheel to rotate.
7. The cleaning device according to claim 1, wherein when the first or second roller brush is driven by the first or second front wheel, the first roller brush and the second roller brush are respectively divided into a first section and a second section, and the first sections of the first and second roller brushes are located at a same side; each of the first and second front wheels is provided with central teeth, wherein the central teeth rotate coaxially, the first and second sections of the first roller brush are respectively provided with first roller brush gears, and the first and second sections of the second roller brush are respectively provided with second roller brush gears; and the first roller brush gear and the second roller brush gear are respectively in transmission connection with the central teeth on each of the first and second front wheels, wherein the first roller brush gear is in transmission connection with the central teeth of each of the first and second front wheels through a first transition gear, or the second roller brush gear is in transmission connection with the central teeth of each of the first and second front wheels through a second transition gear, and the first and second transition gears are arranged alternatively;the driving motor drives the first and second rear wheels by engagement of a driving gear with central teeth, internal teeth or external teeth of the first and second rear wheels, and a rotation of the first and second rear wheels drives the crawler belts to roll, wherein the first and second front wheels are driven to rotate, and when the first front wheel rotates, the first sections of the first and second roller brushes are driven to rotate in opposite directions; when the second front wheel rotates, the second sections of the first and second roller brushes are driven to rotate in opposite directions.
8. The cleaning device according to claim 1, wherein when the first or second roller brush is driven by the first or second front wheel, the first roller brush and the second roller brush are respectively divided into a first section and a second section, and the first sections of the first and second roller brushes are located at a same side; each of the first and second front wheels is provided with internal teeth and external teeth, the first and second sections of the first roller brush are respectively provided with first roller brush gears, and the first and second sections of the second roller brush are respectively provided with second roller brush gears; the first roller brush gears are in transmission connection with the internal teeth on the first and second front wheels, and the second roller brush gears are in transmission connection with the external teeth on the first and second front wheels; or the first roller brush gears are in transmission connection with the external teeth on the first and second front wheels, and the second roller brush gears are in transmission connection with the internal teeth on the first and second front wheels;the driving motor drives the first and second rear wheels by engagement of a driving gear with central teeth, internal teeth or external teeth of the first and second rear wheels, and a rotation of the first and second rear wheels drives the crawler belt to roll, wherein the first and second front wheels are driven to rotate; and when the first front wheel rotates, the first sections of the first and second roller brushes are driven to rotate in opposite directions; when the second front wheel rotates, the second sections of the first and second roller brushes are driven to rotate in opposite directions.
9. The cleaning device according to claim 1, wherein when the first or second roller brush are driven by the first or second front wheel, a first roller brush gear and a first support are respectively arranged at both ends of a rotating shaft of the first roller brush, and a second roller brush gear and a second support are respectively arranged at both ends of a rotating shaft of the second roller brush; the first roller brush gear is in engagement transmission with external teeth or internal teeth of the first front wheel, the first support abuts against an outer ring or an inner ring of the second front wheel, and the second roller brush gear is in engagement transmission with internal teeth or external teeth of the second front wheel, and the second support abuts against an inner ring or an outer ring of the first front wheel; the driving motor drives the first and second rear wheels in a gear-driven manner, and the first and second rear wheels are provided with central teeth, internal teeth or external teeth; a driving gear of the driving motor is engaged with the central teeth, the internal teeth or the external teeth of the first and second rear wheels for transmission; a rotation of the first and second rear wheels drives rolling of the crawler belt, and the rolling of the crawler belt drives a rotation of the first and second front wheels; when the first front wheel rotates, the first roller brush is driven to rotate; when the second front wheel rotates, the second roller brush is driven to rotate.
10. The cleaning device according to claim 1, wherein there is one driving motor, the driving motor is arranged in the first roller brush; when the first roller brush rotates together with the driving motor, the driving motor is in transmission connection with the first front wheel at a first end of a rotating shaft of the first roller brush, and both ends of a rotating shaft of the second roller brush are drivingly connected with the first roller brush and the second roller brush respectively; when the driving motor rotates, the first front wheel is driven to rotate, a rotation of the first front wheel drives the second roller brush to rotate, and the first crawler belt and the first rear wheel are simultaneously driven to rotate; a rotation of the second roller brush drives a rotation of the second front wheel, and the rotation of the second front wheel drives the second crawler belt and the second rear wheel to rotate; when the first roller brush rotates with the driving motor, a second end of the rotating shaft of the first roller brush is in transmission connection with the second front wheel, and the rotation of the second front wheel drives the first roller brush to rotate.
11. The cleaning device according to claim 1, wherein the driving motor comprises a first driving motor and a second driving motor, wherein the first driving motor is arranged in the first roller brush and the second driving motor is arranged in the second roller brush; when the first and second roller brushes rotate together with the driving motor, the first driving motor is in transmission connection with the first front wheel at a first end of a rotating shaft of the first roller brush, and the second driving motor is in transmission connection with the second front wheel at a first end of a rotating shaft of the second roller brush; when the first driving motor rotates, the first front wheel and the first roller brush are driven to rotate, and a rotation of the first front wheel drives the first crawler belt and the first rear wheel to rotate; when the second driving motor rotates, the second roller brush and the second front wheel are driven to rotate, and a rotation of the second front wheel drives the second crawler belt and the second rear wheel to rotate; when the first or second roller brush rotates with the driving motor, a second end of the rotating shaft of the first or second roller brush is in transmission connection with the second or first front wheel, and when the second or first front wheel rotates, the first or second roller brush is driven to rotate;when the first and second roller brushes do not rotate together with the driving motor, the second end of the rotating shaft of the first roller brush is in transmission connection with the second front wheel, and the second end of the rotating shaft of the second roller brush is in transmission connection with the first front wheel; when the first and second front wheels rotate, the second and first roller brushes are respectively driven to rotate.
12. A cleaning system applied to a swimming pool cleaning device, comprising: at least two roller brushes, wherein the at least two roller brushes are arranged in parallel, and an opening is arranged at a bottom of the corresponding swimming pool cleaning device between rotating shafts of the at least two roller brushes arranged in parallel, and the opening is at least one of water inlets in fluid communication with a filtering system inside the swimming pool cleaning device; anda roller brush driving source, wherein the roller brush driving source is in transmission connection with the at least two roller brushes through at least one transmission structure and is configured to drive the at least two roller brushes to rotate in opposite directions.
13. The cleaning system according to claim 12, wherein a width of the opening is greater than or equal to a spacing between circumferential profiles of two adjacent roller brushes located on two sides of the opening in a width direction.
14. The cleaning system according to claim 12, wherein the roller brush driving source comprises a traveling mechanism of the swimming pool cleaning device; the traveling mechanism comprises traveling wheels, crawler belts and a driving motor, wherein the traveling wheels at least comprise a first rear wheel, a second rear wheel, a first front wheel and a second front wheel; a first crawler belt is sleeved on peripheries of the first front wheel and the first rear wheel, and a second crawler belt is sleeved on peripheries of the second front wheel and the second rear wheel; a number of the driving motor is at least one, and at least one driving motor is in transmission connection with at least one traveling wheel;the at least two roller brushes are arranged between the first front wheel and the second front wheel, and are driven to rotate by the first front wheel and/or the second front wheel through the at least one transmission structure; or at least one driving motor drives the at least two roller brushes to rotate directly or through the at least one transmission structure; or the at least two roller brushes are driven to rotate by at least one driving motor and a front wheel through the at least one transmission structure.
15. The cleaning system according to claim 14, wherein the at least two roller brushes comprises a first roller brush and a second roller brush, an axis of the first roller brush is located outside or inside a contour line of each of the first and second front wheels when viewed laterally, and an axis of the second roller brush is located inside or outside the contour line of each of the first and second front wheels; or the axes of the first and second roller brushes are both within the contour line of each of the first and second front wheels.
16. The cleaning system according to claim 12, wherein each of the at least two roller brushes comprises a rotating shaft, a shaft sleeve and a plurality of blades, wherein the shaft sleeve is sleeved on the rotating shaft, one end of each of the plurality of blades being connected to the shaft sleeve along an axial direction and circumferentially; wherein the plurality of blades on the at least two roller brushes rotating in opposite directions are in contact or spaced apart.
17. The cleaning system according to claim 13, wherein a projection of the opening on a surface to be cleaned at least partially coincides with a projection of a spacing between ends of blade ends of the at least two roller brushes on the surface to be cleaned; and the opening is further away from a front end of the cleaning device than the spacing.
18. A swimming pool cleaning device, comprising at least one water inlet, a filtering system and a traveling mechanism, wherein the swimming pool cleaning device further comprises a cleaning system, in the cleaning system:at least two parallel roller brushes are at least partially arranged in at least two roller brush bins arranged at a bottom of the cleaning device;the at least one water inlet is arranged between the at least two roller brush bins and is in fluid communication with the filtering system;the at least two parallel roller brushes are respectively driven by the traveling mechanism to rotate in opposite directions; andthe at least two parallel roller brushes comprise blades, and a minimum spacing between ends of the blades on the at least two parallel roller brushes is less than or equal to a width of the at least one water inlet.
19. The swimming pool cleaning device according to claim 18, wherein a projection of the at least one water inlet on a surface to be cleaned at least partially coincides with a projection of the spacing between the ends of the blades of the at least two parallel roller brushes on the surface to be cleaned; and the at least one water inlet is further away from a front end of the cleaning device than the spacing.
20. The swimming pool cleaning device according to claim 18, wherein the at least two parallel roller brushes arranged in parallel are respectively driven by the traveling mechanism to rotate in opposite directions, comprising one of the following: driven by a single traveling wheel or driven by two traveling wheels respectively.

CROSS-REFERENCE TO THE RELATED APPLICATIONS

This application is a continuation application of International Application No. PCT/CN2024/070973 filed on Jan. 5, 2024 and International Application No. PCT/CN2024/070976 filed on Jan. 5, 2024, the entire contents of which are incorporated herein by reference.

Continuations (2)

	Number	Date	Country
Parent	PCT/CN2024/070973	Jan 2024	WO
Child	19026551		US
Parent	PCT/CN2024/070976	Jan 2024	WO
Child	19026551		US

Cleaning Device, Cleaning System and Swimming Pool Cleaning Device

Information

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Date Filed

Date Published

Inventors

Original Assignees

CPC

International Classifications

Abstract

Description

Claims

CROSS-REFERENCE TO THE RELATED APPLICATIONS

Continuations (2)