POOL CLEANING ROBOT

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure is a continuation of International Patent Application No. PCT/CN2023/086051, which is filed on Apr. 3, 2023, and claims priority to Chinese Patent Application No. 202320121909.7, filed on Feb. 6, 2023 and entitled “POOL CLEANING ROBOT”, the contents of which are hereby incorporated by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the technical field of pool cleaning robots, and in particular, to a pool cleaning robot.

BACKGROUND

With the economy developing and the technology advancing, a pool cleaning robot gradually takes a role in daily life and increasingly grows popular. A control board, a significant part of the pool cleaning robot, primarily serves to control the pool cleaning robot to work.

In the related art, it is common practice to vertically attach the control board of the pool cleaning robot to an inner wall of a housing. Consequently, an accelerometer and a gyroscope on the control board fail to properly sense a real-time state of the pool cleaning robot or precisely determine a coordinate position of the pool cleaning robot. Therefore, working efficiency of the pool cleaning robot is reduced, and time costs are increased.

To resolve the technical problem of the low working efficiency of the pool cleaning robot, a pool cleaning robot is to be provided urgently.

SUMMARY

An objective of the present disclosure is to provide a pool cleaning robot, so as to accurately determine a coordinate position of the pool cleaning robot, improve working efficiency, save time costs, and improve user experience.

In order to realize the objective, some embodiments of the present disclosure employ the technical solutions as follows:

Some embodiments of the present disclosure provide a pool cleaning robot. The pool cleaning robot includes:

• • a housing, where the housing is internally provided with a first sealed chamber; and
  • a control board, where the control board is connected to the first sealed chamber through a suspension arm, and the control board is disposed in a first direction, so that the control board is parallel to a bottom of the housing; and an inertial measurement unit (IMU) is disposed on the control board, and an accelerometer and a gyroscope are disposed in the IMU.

In some embodiments, the pool cleaning robot includes at least two suspension arms.

In some embodiments, the pool cleaning robot includes a power supply assembly, where the power supply assembly is flatly laid in the first sealed chamber, the power supply assembly is positioned below the control board, and the power supply assembly is electrically connected to the control board.

In some embodiments, there is a preset distance between a lower end surface of the control board and an upper end surface of the power supply assembly, and the preset distance is set to be between 5 cm and 20 cm.

In some embodiments, the first sealed chamber includes an accommodation tank, and the power supply assembly is accommodated in the accommodation tank.

In some embodiments, an outer wall of the housing is provided with an interactive connector, and the interactive connector is electrically connected to the power supply assembly, or the interactive connector is electrically connected to the control board, or the interactive connector is electrically connected to the power supply assembly and the control board, or the interactive connector is configured to allow the power supply assembly to be charged, or the interactive connector is configured to exchange information with the control board, or the interactive connector is configured to allow the power supply assembly to be charged and exchange information with the control board.

In some embodiments, the pool cleaning robot includes a water pump motor and an impeller, the water pump motor is disposed above the power supply assembly, an output end of the water pump motor extends out of the first sealed chamber, and the output end of the water pump motor is provided with the impeller.

In some embodiments, the control board is provided with an avoidance portion, and the avoidance portion is configured to accommodate the water pump motor.

In some embodiments, the avoidance portion is in a cambered shape or a zigzag shape.

In some embodiments, a difference obtained by subtracting buoyancy applied to the entire pool cleaning robot from gravity of the entire pool cleaning robot remains between 2 N and 8 N.

In some embodiments, a second sealed chamber is provided inside the housing, a liquid inlet and a liquid outlet are provided on the second sealed chamber, and the liquid outlet communicates with an outside of the housing.

Some embodiments of the present disclosure provide a pool cleaning robot. The pool cleaning robot includes:

• • a housing, wherein the housing is internally provided with a first sealed chamber; and
  • a control board, wherein the control board is connected to the first sealed chamber through a screw, and the control board is disposed in a first direction, so that the control board is parallel to a bottom of the housing; and
  • an inertial measurement unit (IMU) is disposed on the control board, and an accelerometer and a gyroscope are disposed in the IMU.

In some embodiments, an outer wall of the housing is provided with an interactive connector, and the interactive connector is configured to allow the power supply assembly to be charged; or the interactive connector is configured to exchange information with the control board; or the interactive connector is configured to allow the power supply assembly to be charged, and the interactive connector is configured to exchange information with the control board.

In some embodiments, the control board is suspended in the first sealed chamber through the suspension arm.

In some embodiments, the suspension arm is connected to a top of the first sealed chamber or a bottom of the first sealed chamber.

In some embodiments, any two adjacent suspension arms of the at least two suspension arms are disposed at equal intervals.

In some embodiments, the pool cleaning robot comprises four suspension arms, and the four suspension arms are positioned at corners of the control board, respectively.

In some embodiments, the pool cleaning robot includes a pressing plate, and the pressing plate is disposed on an inner wall of the first sealed chamber.

In some embodiments, the pool cleaning robot includes a buffer cushion, and the buffer cushion is disposed between the power supply assembly and a side wall of the accommodation tank.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to describe the technical solutions in the embodiments of the present disclosure more clearly, the accompanying drawings required for describing the embodiments of the present disclosure are briefly described below. Obviously, the accompanying drawings in the following description are merely some embodiments of the present disclosure, and those of ordinary skill in the art can also derive other accompanying drawings from the contents in the embodiments of the present disclosure and these accompanying drawings without making creative efforts.

FIG. 1 illustrates a first schematic structural diagram of a pool cleaning robot according to some embodiments of the present disclosure;

FIG. 2 illustrates a side view of a pool cleaning robot according to some embodiments of the present disclosure;

FIG. 3 illustrates a sectional view in a direction A-A in FIG. 2;

FIG. 4 illustrates a partial enlarged view of a portion B in FIG. 3;

FIG. 5 illustrates a second schematic structural diagram of a pool cleaning robot according to some embodiments of the present disclosure;

FIG. 6 illustrates a schematic structural diagram of a connection between a control board and a first sealed chamber according to a first embodiment of the present disclosure;

FIG. 7 illustrates a schematic structural diagram of a connection between a control board and a first sealed chamber according to a second embodiment of the present disclosure; and

FIG. 8 illustrates a top view of a connection between a control board and a first sealed chamber according to a second embodiment of the present disclosure.

REFERENCE NUMERALS

• • 100. housing; 110. first sealed chamber; 1101. accommodation tank; 1102. pressing plate; 120. second sealed chamber; 1201. liquid inlet; 1202. liquid outlet; 1203. filter screen; 1204. filter screen type cloth bag; 1205. counterweight block; 130. interactive connector; 140. ground cleaning rolling brush;
  • 200. control board; 210. suspension arm; 220. avoidance portion; 230. screw; 231. first through hole; 240. mounting plate;
  • 300. power supply assembly;
  • 400. water pump motor; 410. impeller.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the present disclosure, but are not intended to limit the present disclosure. In addition, it is further to be noted that for the convenience of description, only some structures related to the present disclosure rather than all structures are shown in the accompanying drawings.

In the description of the present disclosure, unless otherwise explicitly specified and defined, the terms “connected”, “connection”, and “fixed” should be understood in a broad sense. For example, a connection can be a fixed connection, a detachable connection, an integrated connection, a mechanical connection, an electric connection, a direct connection, an indirect connection via an intermediate medium, communication of structures inside two elements, or an interaction relation of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific conditions.

In the present disclosure, unless otherwise explicitly specified and defined, that a first feature is “above” or “below” a second feature may be that the first feature may be in direct contact with the second feature, or the first feature may be in contact with the second feature through another feature between the first feature and the second feature instead of being in direct contact with the second feature. In addition, that the first feature is “above”, “on”, or “over” the second feature may be that the first feature is right above or obliquely above the second feature, or merely mean that a horizontal height of the first feature is greater than that of the second feature. That the first feature is “below”, “underneath”, or “under” the second feature may be that the first feature is right below or obliquely below the second feature, or merely mean that a horizontal height of the first feature is less than that of the second feature.

In the description of the present disclosure, an orientation or position relationship indicated by terms “above”, “below”, “left”, “right”, and the like is an orientation or position relationship based on the accompanying drawings, and is only intended to facilitate descriptions and simplify operations, but is not intended to indicate or imply that an apparatus or an element needs to have a specific orientation and be constructed and operated in a specific orientation. Therefore, such terms cannot be understood as a limitation on the present disclosure. In addition, the terms “first” and “second” are merely used to distinguish in description and have no special meanings.

As shown in FIG. 1 to FIG. 4, some embodiments of the present disclosure provide a pool cleaning robot. The pool cleaning robot mainly includes a housing 100 and a control board 200. The housing 100 is internally provided with a first sealed chamber 110. The control board 200 is connected to the first sealed chamber 110 through a suspension arm 210, and the control board 200 is disposed in a first direction, so that the control board 200 is parallel to a bottom of the housing 100. An inertial measurement unit (IMU) is disposed on the control board 200, and an accelerometer and a gyroscope are disposed in the IMU. For example, the suspension arm 210 is connected to a top of the first sealed chamber 110, a bottom of the first sealed chamber 110, or a side of the first sealed chamber 110, provided that it is ensured that the control board 200 is disposed in the first direction. It is to be noted that in some embodiments, the first direction is an X-axis direction in FIG. 3. In other words, the control board 200 is disposed parallel to the bottom of the first sealed chamber 110, that is, when the pool cleaning robot is placed horizontally, the control board 200 is in a horizontal state.

In some embodiments, the control board 200 is fixedly disposed in the first sealed chamber 110. The control board 200 is disposed in the first direction, so that the control board 200 is parallel to the bottom of the housing 100, that is, when the pool cleaning robot moves on a bottom, a wall, or a water surface of the pool, the control board 200 is always parallel to the bottom of the housing 100.

In some embodiments, the first sealed chamber 110 is an electrical control box. Further, the first sealed chamber 110 is disposed at a front portion or a rear portion of the pool cleaning robot, or the first sealed chamber 110 is disposed in a region of the pool cleaning robot where vibration is minimized, such as at a center of a body of the pool cleaning robot.

It should be noted that in some embodiments, the first direction is the X-axis direction in FIG. 3. In other words, the control board 200 is disposed parallel to the bottom of the first sealed chamber 110, that is, when the pool cleaning robot is placed horizontally, the control board 200 is in the horizontal state. Furthermore, when the pool cleaning robot moves on the bottom, the wall, or the water surface of the pool, the control board 200 is always parallel to the bottom of the housing 100.

In some embodiments, the control board 200 is fixed in the first sealed chamber 110 by using a connection assembly, and the connection assembly may be a suspension arm, a screw, a snap, or a magnetic structure. Furthermore, the control board 200 is fixedly connected to any position on the top, the bottom, or a side wall of the first sealed chamber 110.

Based on the above design, in some embodiments, at least two suspension arms 210 are disposed, and two adjacent suspension arms 210 are disposed at equal intervals. For example, four suspension arms 210 are disposed, and the four suspension arms 210 are positioned at corners of the control board 200, respectively, thereby improving stability and reliability of the control board 200. In addition, the control board 200 is suspended and horizontally disposed. This facilitates arrangement of various electrical elements on the control board 200. Moreover, a heat dissipation area can also be expanded, so that an upper end surface and a lower end surface of the control board 200 can dissipate heat of the electrical elements, thereby improving heat dissipation efficiency.

In some embodiments, the control board 200 is fixed in the first sealed chamber 110 by using a screw 230. The control board 200 is disposed in the first direction, so that the control board 200 is parallel to the bottom of the housing 100. For example, the screw 230 may be fixed to the top or the bottom of the first sealed chamber 110, provided that it is ensured that the control board 200 is parallel to the bottom of the housing 100.

In some embodiments, at least one screw 230 is disposed. Further, the screws 230 are disposed along a periphery of the control board 200. For example, four screws 230 are disposed, and the four screws 230 are disposed at the corners of the control board 200, respectively, thereby improving the stability and reliability of the control board 200.

In some embodiments, the pool cleaning robot further includes an elastic vibration-damping material. The elastic vibration-damping material may be disposed at a joint between the control board 200 and the first sealed chamber 110 to absorb high-frequency vibrations. For example, the elastic vibration-damping material may be disposed at each joint between the screws 230 and other components, such as a joint between the screw 230 and the control board 200 and/or a joint between the screw 230 and the first sealed chamber 110. The control board 200 is fixed with the first sealed chamber 110 by using the screw 230, and vibration energy transmitted to the control board 200 by the first sealed chamber 110 is absorbed and consumed by the elastic vibration-damping material, to further reduce the vibration of the control board 200, thereby improving the stability of the control board 200.

In some embodiments, the elastic vibration-damping material may be a rubber pad, a silicone pad, a foam pad, or a spring.

In one embodiment, the control board 200 is provided with a first through hole 231. The screw 230 is fixed to the control board 200 through the first through hole 231. The screw 230 includes a shank and a head. In another embodiment, a diameter of at least one first through hole 231 is greater than a diameter of the shank, so that the first through hole 231 and the shank are clearance-fitted. A gap between the first through hole 231 on the control board 200 and the shank allows slight relative movement of the control board 200 in a direction perpendicular to an axis of the screw 230. This releases deformation freedom, compensates for minor deformation of the control board 200 caused by assembly stress or an external force, and reduces the vibration of the control board 200. Furthermore, the diameter of the first through hole 231 should be less than a diameter of the head to ensure that the head can provide a clamping force perpendicular to the control board 200, ensuring that the control board 200 is fixed in a normal direction.

In some embodiments, as shown in FIG. 6 to FIG. 8, the control board 200 is fixed in the first sealed chamber 110 by using the screw 230. The first sealed chamber 110 is an electrical control box, and the control board 200 is disposed in the first direction, so that the control board 200 is parallel to the bottom of the housing 100. Furthermore, four screws 230 are disposed along the periphery of the control board 200.

As shown in FIG. 6, the control board 200 is fixed to the top of the first sealed chamber 110 by using the screws 230. As shown in FIG. 7, the control board 200 is fixed to the bottom of the first sealed chamber 110 by using the screws 230, to ensure that the control board 200 is parallel to the bottom of the housing 100.

As shown in FIG. 7 and FIG. 8, the control board 200 is provided with the first through hole 231, and the first through hole 231 corresponds to the screw 230. Specifically, there are four first through holes 231, and the four screws 230 are fixed to the control board 200 through the four first through holes 231. Furthermore, diameters of two first through holes 231 are greater than diameters of shanks of corresponding screws 230, so that the two first through holes 231 and the shanks of the corresponding screws 230 are clearance-fitted to reduce the vibration of the control board 200.

In other embodiments, the control board 200 and the first sealed chamber 110 are connected through snap-fit fixing, such as using a snap to fix the control board 200 in the first sealed chamber 110, through magnetic attraction, such as embedding a magnet in the control board 200 and/or the first sealed chamber 110 to fix the control board 200 in the first sealed chamber 110 through magnetic attraction, through adhesive fixing, such as using epoxy resin, silicone, or double-sided tape to fix the control board 200 in the first sealed chamber 110, or through welding fixing, such as welding the control board 200 in the first sealed chamber 110.

In one embodiment, the pool cleaning robot further includes a mounting plate 240. The IMU is disposed on the mounting plate 240. The mounting plate 240 is disposed in the first sealed chamber 110. The mounting plate 240 is disposed in the first direction, so that the mounting plate 240 is parallel to the bottom of the housing 100. The IMU is electrically connected to the control board 200. Furthermore, the mounting plate 240 may be a flexible plate, a rigid plate, or a rigid-flexible plate. In this embodiment, the mounting plate 240 may be disposed independently of the control board 200, or the mounting plate 240 may be disposed on the control board 200. When the mounting plate 240 is disposed independently of the control board 200, the mounting plate 240 is not disposed on the control board 200, but is disposed at a position other than the control board 200 in the first sealed chamber 110. When the mounting plate 240 is disposed on the control board 200, the mounting plate 240 may be disposed on the control board 200 in various connection manners. In some embodiments, the mounting plate 240 is disposed on the control board 200 by using a connection component such as a suspension arm, a screw, a snap, or a magnetic structure, or is disposed on the control board 200 through adhesive fixing or welding fixing, such as directly gluing or welding the control board 200 to the control board 200. In this embodiment, relative displacement between the IMU and the control board 200 is allowed, or the IMU and the control board 200 are not on a same plane. This can further reduce the vibration transmitted by the control board 200 to the IMU and improve mounting reliability of the IMU.

It should be noted that the first direction in this embodiment is the X-axis direction in FIG. 3.

In other words, the mounting plate 240 is disposed parallel to the bottom of the first sealed chamber 110, that is, when the pool cleaning robot is placed horizontally, the mounting plate 240 is in the horizontal state. In other words, when the pool cleaning robot moves on the bottom, the wall, or the water surface of the pool, the control board 200 is always parallel to the bottom of the housing 100. For details of a manner for connecting the mounting plate 240 to the first sealed chamber 110 and a manner for connecting the mounting plate 240 to the control board 200, refer to the above manner for mounting the control board 200 in the first sealed chamber 110. Details are not described herein.

In one embodiment, a resonant frequency of various components may be reduced by increasing a weight of the IMU or by using a counterweight, thereby further improving stability of the IMU. For example, the weight of the IMU may be appropriately increased to improve the stability of the IMU after the IMU is mounted, or a counterweight block may be mounted on the control board 200 or the mounting plate 240 on which the IMU is mounted, to suppress noise, thereby improving the stability of the control board 200 or the mounting plate 240. This further improves the stability of the IMU. There is at least one counterweight block, and a plurality of counterweight blocks may be distributed along a periphery of the IMU.

In one embodiment, there is at least one IMU. When there are two or more IMUs, the IMUs are disposed symmetrically to offset a vibration-induced error through data fusion.

To further reduce the vibration of the IMU, based on the above embodiments, the IMU may be wrapped with a vibration-absorbing material, for example, a polymer composite material (such as polyurethane) or a viscoelastic material, to directly dissipate vibration energy.

In some embodiments, the control board 200 is a printed circuit board (PCB). Furthermore, the printed circuit board may be a flexible plate, a rigid plate, or a rigid-flexible plate. The control board 200 is horizontally disposed, so that the control board 200 is parallel to the bottom of the housing 100. In this way, the accelerometer and the gyroscope can properly and precisely sense acceleration and a direction of the pool cleaning robot, thereby accurately determining a position of the pool cleaning robot. In other words, the gyroscope is horizontally disposed, so that the gyroscope can determine a reference point position and a three-dimensional coordinate axis. Then, the accelerometer monitors the acceleration of the pool cleaning robot in real time. A torquer enables the pool cleaning robot to accelerate or decelerate in a certain direction. Moreover, the accelerometer and the gyroscope can sense whether the front portion or the rear portion of the pool cleaning robot is lifted or pressed down, so that the pool cleaning robot can be suitable for pool bottom surfaces with different planeness. This improves operation efficiency, flexibility, and applicability of the pool cleaning robot and reduces costs.

It is to be noted that in some embodiments, specific working principles of the accelerometer and the gyroscope are as in the related art, and details are not further described in the embodiments.

As shown in FIG. 2 to FIG. 4, in some embodiments, the pool cleaning robot includes a power supply assembly 300. The power supply assembly 300 is flatly laid in the first sealed chamber 110, the power supply assembly 300 is positioned below the control board 200, and the power supply assembly 300 is electrically connected to the control board 200. Because the power supply assembly 300 is heavy, a center of gravity of the pool cleaning robot is lowered by disposing the power supply assembly 300 below the control board 200. This improves stability of the pool cleaning robot. Certainly, the power supply assembly 300 may alternatively be disposed at a same height as the control board 200, or may be disposed in other layout manners. Details are not described herein again.

Moreover, the power supply assembly 300 is disposed in the first sealed chamber 110, so that the power supply assembly 300 is disposed inside the pool cleaning robot. In this way, a weight of the pool cleaning robot is increased, so that the pool cleaning robot can easily sink to the bottom of the pool to perform cleaning.

In some optional embodiments, there is a preset distance between the lower end surface of the control board 200 and an upper end surface of the power supply assembly 300, and the preset distance is set to be between 5 cm and 20 cm, for example, 5 cm, 8 cm, 10 cm, or 20 cm. The preset distance may be configured to allow an electrical element to be mounted and also facilitate heat dissipation of the control board 200. This expands the heat dissipation area, improves the heat dissipation efficiency, and prolongs a service life of the control board 200.

In some optional embodiments, as shown in FIG. 3, the first sealed chamber 110 includes an accommodation tank 1101, and the power supply assembly 300 is disposed in the accommodation tank 1101. In some embodiments, the accommodation tank 1101 is disposed at the bottom of the first sealed chamber 110. The accommodation tank 1101 is disposed to improve stability of the power supply assembly 300 and prevent the power supply assembly 300 from vibrating and even jumping when the pool cleaning robot works. Optionally, the accommodation tank 1101 is rectangular, so as to match a shape of the power supply assembly 300.

In some embodiments, the pool cleaning robot further includes a buffer cushion, and the buffer cushion is disposed between the power supply assembly 300 and a side wall of the accommodation tank 1101 to further reduce vibration of the power supply assembly 300. This improves the stability of the power supply assembly 300 and prolongs a service life.

In another embodiment, the buffer cushion may be further disposed between the control board 200 and the first sealed chamber 110 to further reduce vibration of the control board 200. This improves the stability of the control board 200.

In some embodiments, as shown in FIG. 3, the pool cleaning robot further includes a pressing plate 1102. The pressing plate 1102 is disposed on an inner wall of the first sealed chamber 110, and the pressing plate 1102 is configured to press the power supply assembly 300, so that the power supply assembly 300 is prevented from jumping up and down during working. This improves the stability, reliability, and safety of the power supply assembly 300.

In some optional embodiments, the pool cleaning robot further includes a buoyancy unit. The buoyancy unit is disposed in the housing 100, and a water inlet and a water outlet are provided on the buoyancy unit. The buoyancy unit controls a water inlet amount, so that a difference obtained by subtracting buoyancy applied to the entire pool cleaning robot from gravity of the entire pool cleaning robot remains between 2 N and 8 N, for example, 2 N, 3 N, 5 N, or 8 N. The buoyancy unit is disposed, so that the pool cleaning robot can operate on the water surface and clear garbage on the water surface. Specifically, the buoyancy unit adjusts the buoyancy applied to the pool cleaning robot, enabling the buoyancy applied to the pool cleaning robot to be equal to the gravity of the pool cleaning robot, so that the pool cleaning robot can stably operate on the water surface.

In some embodiments, the buoyancy unit includes a water inlet pump and a water outlet pump. The water inlet pump communicates with the water inlet, and the water outlet pump communicates with the water outlet. The water inlet pump and the water outlet pump are controlled by the control board 200. When the pool cleaning robot needs to sink, an operator can control the water inlet pump to be turned on and the water outlet pump to be turned off on the ground in a wireless remote control manner. The water inlet pump inputs water into the buoyancy unit, so that the gravity of the entire pool cleaning robot is gradually increased, enabling the pool cleaning robot to smoothly dive to a predetermined position. Similarly, when the pool cleaning robot needs to float upward, an operator can control the water outlet pump to be turned on and the water inlet pump to be turned off on the ground in a wireless remote control manner. The water outlet pump allows water to be discharged from the buoyancy unit, so that the gravity of the entire pool cleaning robot is gradually reduced, enabling the pool cleaning robot to smoothly float upward to a predetermined position.

In addition, in some embodiments, the power supply assembly 300 is disposed inside the housing 100, so that the difference obtained by subtracting the buoyancy applied to the entire pool cleaning robot from the gravity of the entire pool cleaning robot and required by the pool cleaning robot can be rapidly prepared. In this way, a time for the water inlet pump to input water into the buoyancy unit is shortened, and the working efficiency is improved. Moreover, a size of the buoyancy unit can also be reduced to miniaturize the pool cleaning robot, and a user can take the pool cleaning robot conveniently.

In some embodiments, a size ratio of the buoyancy unit to the housing 100 ranges from 0.15 to 0.45. The size ratio may be set to 0.15, 0.20, 0.30, 0.40, 0.45, or the like.

As shown in FIG. 1, in some embodiments, an outer wall of the housing 100 is provided with an interactive connector 130. The interactive connector 130 is electrically connected to the power supply assembly 300 and/or the control board 200, and the interactive connector 130 is configured to allow the power supply assembly 300 to be charged and/or exchange information with the control board 200. In some embodiments, there may be two or more interactive connectors 130. A waterproof silicone cover is disposed on the interactive connector 130.

As shown in FIG. 3, in some embodiments, the housing 100 is internally provided with a second sealed chamber 120. A liquid inlet 1201 and a liquid outlet 1202 are disposed on the second sealed chamber 120, a filter screen 1203 is disposed at the liquid outlet 1202, and the liquid outlet 1202 communicates with an outside of the housing 100. In some embodiments, a water pump motor 400 is disposed above the power supply assembly 300, an output end of the water pump motor 400 extends out of the first sealed chamber 110, and the output end of the water pump motor 400 is provided with an impeller 410. When the pool cleaning robot is placed in the pool, water in the pool is automatically input into the second sealed chamber 120 through the liquid inlet 1201, and then flows out through the liquid outlet 1202 after being filtered through the filter screen 1203. In this case, the water pump motor 400 drives the impeller 410 to rotate to increase a flow rate of water at the liquid outlet 1202. This improves efficiency of the pool cleaning robot in clearing sewage in the pool.

In some embodiments, the control board 200 is provided with an avoidance portion 220, and the avoidance portion 220 is configured to accommodate the water pump motor 400. In some embodiments, the avoidance portion 220 is in one of a cambered shape or a zigzag shape. The avoidance portion 220 is disposed to facilitate mounting of the water pump motor 400.

In some embodiments, as shown in FIG. 5, two filter screen type cloth bags 1204 are sleeved at the liquid inlet 1201 of the second sealed chamber 120, and the filter screen type cloth bags 1204 are disposed in an open manner. In other words, the two filter screen type cloth bags 1204 are disposed at the liquid inlet 1201 in a bilateral symmetry manner and do not completely block the liquid inlet 1201. Moreover, each of the two filter screen type cloth bags 1204 is provided with a counterweight block 1205. When the pool cleaning robot enters the water, the filter screen type cloth bags 1204 at the liquid inlet 1201 are automatically opened under tension of the water, so as to ensure that the water can enter the pool cleaning robot. When the pool cleaning robot stops working, due to the gravity, the counterweight block 1205 automatically falls to block the liquid inlet 1201, to ensure that sewage in the second sealed chamber 120 cannot flow out through the liquid inlet 1201. Each of the two filter screen type cloth bags 1204 is provided with the counterweight block 1205, so that a speed at which the pool cleaning robot enters the water can be increased, and the sewage can also be prevented from flowing reversely. This improves the working efficiency of the pool cleaning robot.

Optionally, the housing 100 is provided with a drum. Waterproof rubber is bonded to an outer peripheral side of the drum. The waterproof rubber is detachably bonded to the drum, and the sewage in the pool can adhere to the waterproof rubber. In some embodiments, the drum is provided with a mounting hole. The mounting hole is detachably provided with a hair-planted brush. The user can mount different types of hair-planted brushes on the mounting hole as actually required, thereby improving the flexibility and applicability of the pool cleaning robot. Certainly, the operator can also flexibly arrange other types of hair brushes as actually required, provided that it is ensured that the hair brush is detachably connected to the drum. Therefore, the user flexibly replaces the hair brush according to his/her own requirements. Details are not described herein again.

In some optional embodiments, with reference to FIG. 3 continuously, in order to prevent the impeller 410 from sucking gas into the housing 100, the impeller 410 is disposed behind a front wheel in an advancing direction of the pool cleaning robot. In this way, when the pool cleaning robot cleans a side wall of the pool, the operator needs to ensure that a position of the front wheel is not higher than the water surface. In this way, the following case can be avoided: The impeller 410 is exposed on the water surface and then sucks air in, affecting operation efficiency. Certainly, in actual use, the housing 100 is provided with two ground cleaning rolling brushes 140, and the two ground cleaning rolling brushes 140 are positioned at the front wheel and a rear wheel, respectively. The operator only needs to ensure that an axial position of the ground cleaning rolling brush 140 at the front wheel is not exposed on the water surface, so as to ensure that the impeller 410 cannot suck air into the pool cleaning robot. This improves the working efficiency of the pool cleaning robot.

In some embodiments, a weight of the power supply assembly 300 is set to range from 1.0 kg to 1.3 kg, a weight of the water pump motor 400 is set to range from 0.3 kg to 0.5 kg, and a drainage volume of the second sealed chamber is set to range from 8 L to 15 L.

It should be noted that the basic principles, main features, and advantages of the present disclosure are shown and described above. Those skilled in the art should understand that the present disclosure is not limited to the above embodiments, and the above embodiments and the descriptions in the specification merely describe the principles of the present disclosure. Various changes and improvements can also be made to the present disclosure without departing from the spirit and scope of the present disclosure. These changes and improvements fall within the claimed scope of the present disclosure. The claimed scope of the present disclosure is defined by the appended claims and their equivalents.