Swimming pool cleaning robot

Abstract

The utility model discloses a swimming pool cleaning robot, which relates to the field of swimming pool cleaning tools, and comprises a shell, a walking mechanism, a water pump mechanism and a filter box, the walking mechanism is arranged on the shell, and the water pump mechanism and the filter box are arranged in the shell; an upper water inlet is formed in the upper side of the shell, a suction inlet and a water injection nozzle are formed in the lower side of the shell, and the upper water inlet, the suction inlet and the water injection nozzle are all communicated with an inner cavity of the shell; the water pump mechanism comprises a driving motor and an impeller, the driving motor is in transmission connection with the impeller, and the impeller is arranged in the upper water inlet; the filter box is arranged in the shell and is communicated with the suction inlet and the upper water inlet; a first one-way valve is arranged at the suction inlet, a second one-way valve is arranged at the water spraying opening, the first one-way valve is opened in a one-way mode in the direction that water flows into the shell, and the second one-way valve is opened in a one-way mode in the direction that water flows out of the shell. The swimming pool cleaning robot has the advantages that the swimming pool cleaning robot can be quickly and conveniently controlled to float and sink, and the use requirements of users are met.

Description

Technical Field

[0001] This utility model relates to the field of swimming pool cleaning tools, and in particular to a swimming pool cleaning robot. Background Technology

[0002] Pool cleaning requires underwater operations, which are labor-intensive and cumbersome, making it a long-standing and challenging problem for pool owners. With technological advancements, people are increasingly adopting pool cleaning robots to replace manual labor in underwater pool cleaning.

[0003] In existing technology, pool cleaning robots use motors to drive rollers to rotate, thus moving along the bottom or walls of the pool. Some pool cleaning robots are equipped with water pumps, which provide the power for movement or turning by sucking in water and spraying it out from nozzles.

[0004] Among the aforementioned pool cleaning robots, when they stop moving and spraying water, they sink to the bottom. The robots are also difficult to control when they float or sink, which fails to meet the user's needs. Utility Model Content

[0005] The purpose of this invention is to provide a swimming pool cleaning robot that has the advantages of being able to quickly and easily control the robot's floating and sinking, thus meeting user needs.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] This utility model provides a swimming pool cleaning robot, which includes a shell, a walking mechanism, a water pump mechanism, and a filter box; the walking mechanism is disposed in the shell and is used to drive the swimming pool cleaning robot to walk; the water pump mechanism and the filter box are disposed inside the shell;

[0008] The upper side of the housing is provided with an upper water inlet, and the lower side of the housing is provided with an intake port and a spray port. The upper water inlet, the intake port, and the spray port are all connected to the inner cavity of the housing. The water pump mechanism includes a drive motor and an impeller. The drive motor is drivenly connected to the impeller, and the impeller is disposed inside the upper water inlet. The filter box is disposed inside the housing and is connected to the intake port and the upper water inlet.

[0009] A first one-way valve is provided at the inlet, and a second one-way valve is provided at the spray nozzle. The first one-way valve opens in one direction along the direction of water flowing into the housing, and the second one-way valve opens in one direction along the direction of water flowing out of the housing.

[0010] In this design, the pool cleaning robot moves within the pool via a walking mechanism, while the water pump and filter box are housed within the casing. When the robot is cleaning the bottom or sidewalls of the pool, the water pump drives the impeller to rotate forward via a motor, drawing water from the pool into the filter box through the suction inlet. During this process, dirt and impurities are drawn in and filtered through the filter box, remaining in the box and thus cleaning the pool. Water is then discharged from the casing through the upper inlet. When the robot needs to float, it moves upward along the pool sidewall via the walking mechanism. The impeller rotates forward, the first one-way valve opens, and the second one-way valve closes, ensuring the suction inlet continues to draw in water and the upper inlet continues to spray water. This allows the robot to remain attached to the pool sidewall until at least a portion of the casing is above the water surface. Due to gaps in the casing, the impeller's rotation draws in outside air from the exposed portion and expels some water from the casing, creating a cavity within the casing. This allows the robot to float and move within the pool. When the pool cleaning robot needs to sink, the drive motor reverses the impeller, closing the first one-way valve and opening the second one-way valve. Water is drawn into the housing through the upper inlet and sprayed out from the nozzle. During this process, the water drawn into the housing expels the air, and the pool cleaning robot begins to sink. This allows the pool cleaning robot to quickly rise and sink, providing better controllability and meeting user needs.

[0011] Furthermore, an inner positioning sleeve is provided inside the housing, and the inner positioning sleeve is aligned and connected to the suction port; an outer positioning sleeve is provided inside the filter box, and the outer positioning sleeve is sleeved outside the inner positioning sleeve, and the outer positioning sleeve is connected to the inner cavity of the filter box and the inner positioning sleeve.

[0012] In this design, when the filter box is connected to the housing, the inner positioning sleeve is inserted into the outer positioning sleeve and engages with it to ensure proper positioning of the filter box within the housing. Simultaneously, the suction inlet communicates with the inner cavity of the filter box through both the inner and outer positioning sleeves, facilitating proper positioning and communication between the filter box and the suction inlet. This ensures that water and impurities drawn in through the suction inlet flow through the filter box, thereby guaranteeing the cleaning effectiveness of the pool cleaning robot.

[0013] Furthermore, the first one-way valve includes a sealing cover plate, which is disposed on the opening of the outer positioning sleeve facing the inside of the filter box. One side of the sealing cover plate is connected to the inner wall of the filter box and can rotate relative to the outer positioning sleeve.

[0014] In this design, a sealing cover is positioned over the opening of the outer positioning sleeve facing the inside of the filter box. When the impeller rotates forward, water from the pool acts on the sealing cover through the suction inlet, causing it to rotate away from the outer positioning sleeve, thus connecting the suction inlet with the filter box. This allows the first one-way valve to open in the direction of water flow into the housing. When the impeller rotates in reverse, water from the filter box acts on the sealing cover, pressing it firmly against the outer positioning sleeve. The sealing cover remains closed, closing the opening of the outer positioning sleeve facing the inside of the filter box, thus isolating the suction inlet from the filter box. This allows the first one-way valve to close in the direction of water flow out of the housing. This method of design for the first one-way valve is simple in structure, low in cost, easy to open and close, and suitable for high-water-content environments such as swimming pools.

[0015] Furthermore, a first step is formed on the outer side of the inner positioning sleeve, and a second step adapted to the first step is provided on the inner side of the outer positioning sleeve.

[0016] In this design, the inner positioning sleeve and the outer positioning sleeve are further positioned by the first step and the second step, making it less prone to relative shaking when the inner positioning sleeve and the outer positioning sleeve are engaged, thus making it more stable and reliable.

[0017] Furthermore, the water pump mechanism also includes a motor housing, the motor housing includes a housing body and a top cover, the top cover is a sealing cover disposed on the housing body, the drive motor is installed in the housing body and the shaft of the drive motor passes through the top cover and is connected to the impeller.

[0018] In this design, the drive motor is housed inside the motor housing, and a sealing cover is placed on the housing to prevent water from entering and affecting the normal operation of the drive motor.

[0019] Furthermore, a stepped groove is formed on the side of the box body facing the top cover, and a limiting ring is provided on the side of the top cover facing the box body. The limiting ring is inserted into the stepped groove, and a sealing ring is provided on the outer sleeve of the limiting ring, with the sealing ring abutting between the limiting ring and the stepped groove.

[0020] In this design, a cavity is formed around the top cover by a limiting ring and a stepped groove to install a sealing ring. The sealing ring then seals the limiting ring and the stepped groove, achieving a sealed connection between the top cover and the box body.

[0021] Furthermore, the upper cover has multiple first buckles spaced apart along its edge, and the upper side of the box has multiple second buckles, with the first buckles and second buckles corresponding to each other and engaging.

[0022] In this solution, when installing the top cover on the box, the top cover is placed on the box and pressed down, so that the first buckle and the second buckle are locked together one by one, thus fixing the box and the top cover. The installation is convenient and quick.

[0023] Furthermore, the impeller outer cover is provided with a filter cover, which is disposed inside the water outlet and is fixedly connected to the upper cover. Water inlets are opened on the periphery of the filter cover, and multiple filter grids are provided on the side of the filter cover facing the upper water inlet.

[0024] In this design, the filter hood filters the water drawn in through the upper inlet, preventing impurities from being drawn in when the impeller reverses direction and affecting normal production. Water inlets are provided around the filter hood to allow water to be discharged from the housing or drawn into the housing when the impeller rotates.

[0025] Furthermore, the walking mechanism includes a rotation drive, a transmission assembly, and rollers. The rotation drive drives the rollers to roll through the transmission assembly. Two rollers are arranged parallel to each other at the bottom of the housing. Multiple cleaning plates are provided on the rollers, and the cleaning plates extend along the axial and radial directions of the rollers.

[0026] In this design, a rotating drive unit drives the roller to rotate via a transmission assembly, thereby moving the pool cleaning robot. Multiple cleaning plates are mounted on the roller, extending axially and radially along the roller (i.e., the cleaning plates protrude outwards perpendicular to the outer circumference of the roller). As the roller rolls, the cleaning plates rotate with it to clean dirt and debris from the pool. Simultaneously, the cleaning plates push the water backwards as the roller rolls, acting as paddles to propel the pool cleaning robot through the water.

[0027] Furthermore, the transmission assembly includes a driving wheel, a first synchronous belt, and a driven wheel. The driving wheel is connected to the rotational drive member, the driven wheel is connected to the roller, and the first synchronous belt is sleeved on the driving wheel and the driven wheel.

[0028] In summary, this utility model has the following beneficial effects:

[0029] In this invention, when the pool cleaning robot needs to float, it moves upward along the side wall of the pool via its walking mechanism. At this time, the impeller rotates forward, the first one-way valve opens, and the second one-way valve closes, ensuring the suction inlet continues to draw in water and the upper inlet continues to spray water until at least a portion of the casing is above the water surface. As the impeller rotates, it draws in outside air from the portion of the casing above the water, allowing the robot to float and move within the pool. When the robot needs to sink, the drive motor reverses the impeller, the first one-way valve closes, and the second one-way valve opens. Water is drawn into the casing through the upper inlet and sprayed out from the spray nozzle. During this process, the water drawn into the casing expels the air inside, and the robot begins to sink. This allows for rapid floating and sinking of the pool cleaning robot, providing better controllability and meeting user needs. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of a swimming pool cleaning robot according to an embodiment of the present invention.

[0031] Figure 2 This is a vertical cross-sectional structural diagram of a swimming pool cleaning robot according to an embodiment of the present invention.

[0032] Figure 3 This is a bottom view of the structure of a pool cleaning robot according to an embodiment of the present invention.

[0033] Figure 4 This is a three-dimensional structural diagram of a transmission component according to an embodiment of the present invention.

[0034] Figure 5 This is a three-dimensional structural diagram of a transmission component according to an embodiment of the present invention.

[0035] Figure 6 This is an exploded structural diagram of the shell and filter box according to an embodiment of the present invention.

[0036] Figure 7 This is an exploded structural diagram of the filter box according to an embodiment of the present invention.

[0037] Figure 8 This is a schematic diagram of water flow when the impeller rotates forward according to an embodiment of the present invention.

[0038] Figure 9 This is a schematic diagram of water flow when the impeller reverses direction according to an embodiment of the present invention.

[0039] Figure 10 This is a schematic diagram of the operation of a pool cleaning robot according to an embodiment of the present invention.

[0040] Figure 11 This is a vertical cross-sectional structural diagram of a water pump mechanism according to an embodiment of the present invention.

[0041] Figure 12 yes Figure 11 Enlarged structural diagram at point A in the middle.

[0042] In the picture:

[0043] 1000. Pool cleaning robot; 100. Shell; 110. Upper water inlet; 120. Suction inlet; 130. Spray nozzle; 140. Inner positioning sleeve; 141. First step; 200. Walking mechanism; 210. Rotary drive component; 220. Transmission assembly; 221. Drive wheel; 222. First synchronous belt; 223. Driven wheel; 224. First tension wheel; 225. Synchronous pulley; 226. Second synchronous belt; 227. Second tension wheel; 230. Roller; 231. Cleaning plate; 300. Water pump Mechanism; 310, Drive motor; 320, Impeller; 330, Motor box; 331, Box body; 332, Top cover; 333, Step groove; 334, Limiting ring; 335, Sealing ring; 336, First snap-fit; 337, Second snap-fit; 338, Counterweight; 340, Filter cover; 341, Filter grid; 342, Water outlet; 400, Filter box; 410, Box frame; 420, Filter disc; 430, Outer positioning sleeve; 431, Second step; 500, First check valve; 600, Second check valve. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings.

[0045] This embodiment discloses a swimming pool cleaning robot 1000, referring to... Figure 1 and Figure 2 The pool cleaning robot 1000 includes a housing 100, a walking mechanism 200, a water pump mechanism 300, and a filter box 400; the walking mechanism 200 is disposed in the housing 100 and is used to drive the pool cleaning robot 1000 to walk; the water pump mechanism 300 and the filter box 400 are disposed inside the housing 100.

[0046] Reference Figures 1 to 3 The housing 100 has an upper water inlet 110 on its upper side and a suction inlet 120 and a spray nozzle 130 on its lower side. The upper water inlet 110, suction inlet 120, and spray nozzle 130 are all connected to the inner cavity of the housing 100. The water pump mechanism 300 can draw water into the housing 100 from the suction inlet 120 and discharge it from the upper water inlet 110, or draw water into the housing 100 from the upper water inlet 110 and discharge it from the spray nozzle 130.

[0047] Reference Figures 1 to 4 The walking mechanism 200 includes a rotation drive 210, a transmission assembly 220, and rollers 230. The rotation drive 210 is fixedly mounted on the housing 100, and two rollers 230 are arranged parallel to each other at the bottom of the housing 100. The rotation drive 210 drives the rollers 230 to roll through the transmission assembly 220, thereby driving the pool cleaning robot 1000 to move.

[0048] In this embodiment, the rotation drive 210 is preferably a motor, and the motor shaft is connected to the transmission assembly 220 to drive the roller 230 to rotate.

[0049] Reference Figure 4 The transmission assembly 220 includes a drive wheel 221, a first synchronous belt 222, and a driven wheel 223. The drive wheel 221 is connected to the rotation drive member 210 and is driven to rotate by the rotation drive member 210. The driven wheel 223 is coaxially connected to one end of one of the two rollers 230. The first synchronous belt 222 is sleeved on the drive wheel 221 and the driven wheel 223. When the rotation drive member 210 rotates, the drive wheel 221 rotates and drives the driven wheel 223 and the roller 230 connected to the driven wheel 223 to rotate through the first synchronous belt 222.

[0050] The transmission assembly 220 also includes a first tensioning pulley 224, which is located between the driving pulley 221 and the driven pulley 223. The outer circumferential surface of the first tensioning pulley 224 abuts against the outer side of the first synchronous belt 222, thereby tightening the first synchronous belt 222 and ensuring the power transmission between the driving pulley 221 and the driven pulley 223.

[0051] Reference Figure 5 Each of the two rollers 230 is connected to a synchronous pulley 225, and each synchronous pulley 225 is coaxially arranged with the corresponding roller 230. A second synchronous belt 226 is simultaneously fitted over both synchronous pulleys 225. Thus, when one roller 230 rotates, it drives the other roller 230 to rotate synchronously, making the pool cleaning robot 1000 more stable when moving. A second tension pulley 227 is rotatably arranged on the side of the housing 100 near the second synchronous belt 226. The second tension pulley 227 abuts against the second synchronous belt 226 to keep the second synchronous belt 226 taut.

[0052] Reference Figure 4 and Figure 5 The roller 230 is provided with multiple cleaning plates 231. The cleaning plates 231 extend along the axial and radial directions of the roller 230, that is, the cleaning plates 231 protrude outward perpendicular to the outer circumference of the roller 230. So when the roller 230 rolls, the cleaning plates 231 can rotate with the roller 230 to clean dirt and impurities in the pool. At the same time, when the cleaning plates 231 roll with the roller 230, they can push the water backward, which acts as a paddle to drive the pool cleaning robot 1000 to move in the water.

[0053] Specifically, the diameter of the middle part of the roller 230 is smaller than the diameter of the two ends of the roller 230. Multiple cleaning plates 231 are evenly arranged in the middle part of the roller 230 so that the end of the cleaning plate 231 that extends away from the roller 230 is roughly flush with the outer peripheral surface of the two ends of the roller 230. This allows the roller 230 to be cleaned by the cleaning plates 231 while the two ends of the roller 230 can support the pool cleaning robot 1000 well.

[0054] Reference Figure 2 , Figure 6 and Figure 7 The filter box 400 is disposed inside the housing 100 and communicates with the suction port 120 and the upper water inlet 110. Specifically, the filter box 400 includes a frame 410 and a filter plate 420. The frame 410 has a side opening, and the filter plate 420 is detachably connected to the opening of the frame 410. The bottom of the frame 410 communicates with the suction port 120. When the water pump mechanism 300 draws water in from the suction port 120, dirt and impurities in the pool are drawn in by the suction port 120 and filtered by the filter box 400. The dirt and impurities remain in the filter box 400, thus cleaning the pool. The water in the housing 100 is discharged from the housing 100 through the upper water inlet 110.

[0055] Reference Figures 2 to 9 The first one-way valve 500 is provided at the suction port 120, and the second one-way valve 600 is provided at the spray port 130. The first one-way valve 500 opens in one direction along the direction of water flowing into the housing 100, and the second one-way valve 600 opens in one direction along the direction of water flowing out of the housing 100.

[0056] Combination Figures 8 to 10 The working principle of the pool cleaning robot 1000's floating and sinking in this embodiment is as follows: When the pool cleaning robot 1000 needs to float, it moves upward along the side wall of the pool via the walking mechanism 200, such as... Figure 10 The pool cleaning robot is in states I and II. At this time, the water pump mechanism 300 draws water upwards, the first one-way valve 500 opens, and the second one-way valve 600 closes, so that the suction inlet 120 continues to draw water and the upper water inlet 110 continues to spray water, allowing the pool cleaning robot 1000 to remain attached to the pool sidewall until at least a portion of the housing 100 is exposed above the pool water surface. Figure 10 As shown in states II and III. Due to the gaps in the housing 100, when the water pump mechanism 300 operates, it draws in outside air from the portion of the housing 100 that is exposed above the water surface and discharges some of the water inside the housing 100, creating a cavity inside the housing 100. This allows the pool cleaning robot 1000 to float and move within the pool, as shown in states II and III. Figure 10As shown in state IV. When the pool cleaning robot 1000 needs to sink, the water pump mechanism 300 draws water downwards, the first one-way valve 500 closes, and the second one-way valve 600 opens. Water is drawn into the housing 100 through the upper inlet 110 and sprayed out through the nozzle 130. During this process, the water drawn into the housing 100 expels the air inside the housing 100, and the pool cleaning robot 1000 begins to sink, as... Figure 10 The state V is shown in the diagram. This enables the pool cleaning robot 1000 to quickly rise and sink, providing better controllability of its ascent and descent and meeting user needs.

[0057] In this embodiment, the suction port 120 is an elongated opening, and there are two suction ports 120. The two suction ports 120 are parallel to the axial direction of the roller 230 and are staggered so that the two suction ports 120 can suck up dirt and impurities over a larger range, ensuring the cleaning effect.

[0058] Reference Figure 3 In this embodiment, two water nozzles 130 are provided. The two water nozzles 130 are circular and are located diagonally on the bottom surface of the housing 100. In other embodiments, the suction port 120 and the water nozzles 130 may also have other configurations.

[0059] Reference Figure 2 , Figure 8 and Figure 9 An inner positioning sleeve 140 is provided inside the housing 100. The inner positioning sleeve 140 is a cylindrical structure with open ends. The inner positioning sleeve 140 is aligned and connected to the suction port 120. The inner positioning sleeve 140 surrounds the suction port 120 and extends into the housing 100. An outer positioning sleeve 430 is provided inside the frame 410 of the filter box 400. The outer positioning sleeve 430 is a cylindrical structure with open ends. The outer positioning sleeve 430 is located at the bottom of the frame 410 and connects the inner cavity of the frame 410 to the outside. The outer positioning sleeve 430 is fitted over the inner positioning sleeve 140, so that the outer positioning sleeve 430 connects the inner cavity of the filter box 400 and the inner positioning sleeve 140. That is, the suction port 120 is connected to the inner cavity of the frame 410 through the inner positioning sleeve 140 and the outer positioning sleeve 430.

[0060] Therefore, when the filter box 400 is connected to the housing 100, the inner positioning sleeve 140 is inserted into the outer positioning sleeve 430 and cooperates with the outer positioning sleeve 430 to position the filter box 400 and the housing 100. At the same time, the suction port 120 is connected to the inner cavity of the filter box 400 through the inner positioning sleeve 140 and the outer positioning sleeve 430, which facilitates the positioning and communication between the filter box 400 and the suction port 120, ensuring that the water and dirt and impurities sucked in by the suction port 120 flow through the filter box 400, thereby ensuring the cleaning effect of the pool cleaning robot 1000.

[0061] The inner positioning sleeve 140 has a first step 141 formed on its outer side, and the outer positioning sleeve 430 has a second step 431 on its inner side that matches the first step 141. The inner positioning sleeve 140 and the outer positioning sleeve 430 are further positioned by the first step 141 and the second step 431, so that the inner positioning sleeve 140 and the outer positioning sleeve 430 are less likely to wobble relative to each other when they are engaged, making them more stable and reliable.

[0062] In this embodiment, the first one-way valve 500 is disposed at the outer positioning sleeve 430. The first one-way valve 500 controls the connection and isolation between the outer positioning sleeve 430 and the inner cavity of the box frame 410, thereby controlling the connection and isolation between the suction port 120 and the inner cavity of the housing 100.

[0063] The first one-way valve 500 includes a sealing cover plate, which is abutted over the opening of the outer positioning sleeve 430 facing the inside of the filter box 400. One side of the sealing cover plate is connected to the inner wall of the filter box 400 and can rotate relative to the outer positioning sleeve 430. Specifically, the sealing cover plate is a flexible sealing plate made of rubber or other materials, which allows the sealing cover plate to deform and fold along the connection between the sealing cover plate and the inner wall of the filter box 400.

[0064] When water from the pool is drawn in through the suction inlet 120, the water flow acts on the sealing cover, causing it to rotate away from the outer positioning sleeve 430, thus connecting the suction inlet 120 with the filter box 400. This allows the first one-way valve 500 to open in the direction of water flow into the housing 100. When water from the pool is drawn in through the upper inlet 110, the water in the filter box 400 acts on the sealing cover, pressing it tightly against the outer positioning sleeve 430. The sealing cover remains closed, while the outer positioning sleeve 430 remains open on the side facing inwards towards the filter box 400. This disconnects the suction inlet 120 from the filter box 400, causing the first one-way valve 500 to close in the direction of water flow out of the housing 100. This method of operation for the first one-way valve 500 is simple in structure, low in cost, and convenient to open and close, making it suitable for swimming pool environments.

[0065] Reference Figure 2 and Figure 11 The water pump mechanism 300 includes a drive motor 310 and an impeller 320. The drive motor 310 is connected to the impeller 320, which is located inside the upper inlet 110. When the drive motor 310 drives the impeller 320 to rotate forward, water is drawn into the housing 100 through the suction port 120 and sprayed out of the housing 100 through the upper inlet 110. When the drive motor 310 drives the impeller 320 to rotate in reverse, water is drawn into the housing 100 through the upper inlet 110 and sprayed out of the housing 100 through the spray nozzle 130.

[0066] Reference Figure 11 and Figure 12The water pump mechanism 300 also includes a motor box 330, a drive motor 310, and a box body 331 and a top cover 332. The top cover 332 is a sealing cover on the box body 331. The drive motor 310 is installed inside the box body 331, and the shaft of the drive motor 310 passes through the top cover 332 and is connected to the impeller 320 to prevent water from entering the box body 331 and affecting the normal operation of the drive motor 310.

[0067] A stepped groove 333 is formed on the side of the housing 331 facing the top cover 332. A limiting ring 334 is provided on the side of the top cover 332 facing the housing 331. The limiting ring 334 is inserted into the stepped groove 333, and a sealing ring 335 is fitted over the limiting ring 334, abutting between the limiting ring 334 and the stepped groove 333. The limiting ring 334 and the stepped groove 333 form a cavity around the top cover 332 to accommodate the sealing ring 335. Thus, the sealing ring 335 seals the limiting ring 334 and the stepped groove 333, achieving a sealed connection between the top cover 332 and the housing 331. This sealing method eliminates the upper and lower pressing structure in the traditional motor housing 330, using a side seal with the sealing ring 335, thereby improving the IP protection capability of the motor housing 330.

[0068] In this embodiment, the upper cover 332 has multiple first buckles 336 spaced apart along its edge, and the box body 331 has multiple second buckles 337 on its upper side. The first buckles 336 and the second buckles 337 are engaged one-to-one. When installing the upper cover 332 on the box body 331, the upper cover 332 is placed on the box body 331 and pressed down, so that the first buckles 336 and the second buckles 337 are engaged one-to-one, thus completing the fixation of the box body 331 and the upper cover 332. This eliminates the traditional screw locking structure, improves mass production efficiency, and makes installation convenient and quick.

[0069] In this embodiment, a counterweight 338 is also provided inside the box 331. The counterweight 338 is biased inside one end of the box 331, so that the weight on both sides of the pool cleaning robot 1000 is not the same, so that the pool cleaning robot 1000 can tilt in the pool when water is sprayed from the nozzle 130, so as to complete the turning.

[0070] The impeller 320 is covered by a filter cover 340, which is located inside the outlet and is fixedly connected to the upper cover 332. Multiple filter grids 341 are provided on the side of the filter cover 340 facing the upper inlet 110. The filter grids 341 of the filter cover 340 filter the water drawn in through the upper inlet 110, preventing impurities from being drawn in when the impeller 320 rotates in reverse, thus avoiding disruption to normal operation. Water inlets 342 are provided around the filter cover 340 to allow water to be discharged from or drawn into the housing 100 when the impeller 320 rotates.

[0071] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A swimming pool cleaning robot, characterized in that, The pool cleaning robot (1000) includes a housing (100), a walking mechanism (200), a water pump mechanism (300), and a filter box (400); the walking mechanism (200) is disposed in the housing (100) and is used to drive the pool cleaning robot (1000) to walk; the water pump mechanism (300) and the filter box (400) are disposed inside the housing (100); The housing (100) has an upper water inlet (110) on its upper side and a suction inlet (120) and a spray nozzle (130) on its lower side. The upper water inlet (110), the suction inlet (120), and the spray nozzle (130) are all connected to the inner cavity of the housing (100). The water pump mechanism (300) includes a drive motor (310) and an impeller (320). The drive motor (310) is connected to the impeller (320), and the impeller (320) is disposed inside the upper water inlet (110). The filter box (400) is disposed inside the housing (100) and is connected to the suction inlet (120) and the upper water inlet (110). A first one-way valve (500) is provided at the suction port (120), and a second one-way valve (600) is provided at the spray port (130). The first one-way valve (500) opens in one direction along the direction of water flowing into the housing (100), and the second one-way valve (600) opens in one direction along the direction of water flowing out of the housing (100).

2. The swimming pool cleaning robot according to claim 1, characterized in that, An inner positioning sleeve (140) is provided inside the housing (100), and the inner positioning sleeve (140) is aligned and connected with the suction port (120); an outer positioning sleeve (430) is provided inside the filter box (400), and the outer positioning sleeve (430) is sleeved outside the inner positioning sleeve (140), and the outer positioning sleeve (430) is connected to the inner cavity of the filter box (400) and the inner positioning sleeve (140).

3. A swimming pool cleaning robot according to claim 2, characterized in that, The first one-way valve (500) includes a sealing cover plate, which covers the opening of the outer positioning sleeve (430) facing the inside of the filter box (400). One side of the sealing cover plate is connected to the inner wall of the filter box (400) and can rotate relative to the outer positioning sleeve (430).

4. A swimming pool cleaning robot according to claim 2, characterized in that, The outer side of the inner positioning sleeve (140) is provided with a first step (141), and the inner side of the outer positioning sleeve (430) is provided with a second step (431) that is adapted to the first step (141).

5. A swimming pool cleaning robot according to claim 1, characterized in that, The water pump mechanism (300) also includes a motor housing (330), the motor housing includes a housing (331) and a top cover (332), the top cover (332) is sealed to the housing (331), the drive motor (310) is installed in the housing (331) and the shaft of the drive motor (310) passes through the top cover (332) and is connected to the impeller (320).

6. A swimming pool cleaning robot according to claim 5, characterized in that, The box body (331) has a stepped groove (333) on the side facing the top cover (332), and the top cover (332) has a limiting ring (334) on the side facing the box body (331). The limiting ring (334) is inserted into the stepped groove (333), and a sealing ring (335) is provided on the outer sleeve of the limiting ring (334). The sealing ring (335) abuts against the limiting ring (334) and the stepped groove (333).

7. A swimming pool cleaning robot according to claim 6, characterized in that, The upper cover (332) is provided with a plurality of first buckles (336) at intervals along its edge, and the upper side of the box body (331) is provided with a plurality of second buckles (337), and the first buckles (336) and the second buckles (337) are fastened to each other in a one-to-one correspondence.

8. A swimming pool cleaning robot according to claim 5, characterized in that, The impeller (320) is covered with a filter cover (340), which is located inside the outlet. The filter cover (340) is fixedly connected to the upper cover (332). The filter cover (340) has water inlets (342) on its periphery. The filter cover (340) has multiple filter grids (341) on the side facing the upper inlet (110).

9. A swimming pool cleaning robot according to claim 1, characterized in that, The walking mechanism (200) includes a rotation drive (210), a transmission assembly (220), and a roller (230). The rotation drive (210) drives the roller (230) to roll through the transmission assembly (220). Two rollers (230) are arranged parallel to each other at the bottom of the housing (100). Multiple cleaning plates (231) are provided on the rollers (230), and the cleaning plates (231) extend along the axial and radial directions of the rollers (230).

10. A swimming pool cleaning robot according to claim 9, characterized in that, The transmission assembly (220) includes a drive wheel (221), a first synchronous belt (222), and a driven wheel (223). The drive wheel (221) is connected to the rotation drive member (210), and the driven wheel (223) is connected to the roller (230). The first synchronous belt (222) is sleeved on the drive wheel (221) and the driven wheel (223).

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