Swimming pool cleaning robot

Abstract

The utility model relates to a swimming pool cleaning robot. The swimming pool cleaning robot comprises a shell, a walking mechanism and a first cleaning assembly. The walking mechanism comprises a roller assembly rotationally arranged on the shell. The first cleaning assembly comprises a first rolling shaft and a first rolling brush, the first rolling shaft is arranged on the front side of the bottom of the shell, and the first rolling brush is arranged on the first rolling shaft in a sleeving mode; the projection, facing the horizontal radial line of the roller assembly, of the front end of the periphery of the first rolling brush is located outside the roller assembly. Compared with a roller assembly which is arranged in front, the first rolling brush is beneficial to wall climbing, the wall climbing success rate is high, the structural design of the first rolling brush is simplified, and therefore the overall complexity is reduced.

Description

Technical Field

[0001] This application relates to the field of cleaning robots, and more particularly to a pool cleaning robot. Background Technology

[0002] Pool cleaning robots are a type of underwater cleaning robot used to clean swimming pools. When working, water drawn in through the inlet is filtered and discharged through the outlet, thus cleaning the pool water. Related technologies typically include cleaning rollers at the front and rear ends of the robot for scrubbing the pool's bottom and side walls. When climbing walls, the robot often adjusts its buoyancy to tilt itself up. However, this method requires a pump motor to reduce the downward thrust on the robot's head, allowing it to tilt and climb. This approach places high demands on the robot's buoyancy, pump motor control, and outlet positioning, resulting in a relatively complex structure. Utility Model Content

[0003] This application provides a pool cleaning robot to solve the problem of complex structures in wall-climbing solutions.

[0004] This application provides a swimming pool cleaning robot, comprising:

[0005] case;

[0006] The traveling mechanism includes a roller assembly that rotates within the housing;

[0007] The first cleaning component includes a first roller and a first roller brush. The first roller is located at the front side of the bottom of the housing, and the first roller brush is sleeved on the first roller.

[0008] Wherein, the projection of the front end of the outer periphery of the first roller brush toward the horizontal radial line of the roller assembly is located outside the roller assembly.

[0009] Furthermore, the deviation D between the front end of the outer periphery of the first roller brush and the outer periphery of the roller assembly ranges from 10 to 50 mm.

[0010] Furthermore, the deviation value D is 15 mm.

[0011] Furthermore, the roller assembly includes a front wheel, a rear wheel, and a track. The front wheel and the rear wheel are rotatably connected to the housing at intervals along the front-rear direction of the housing, and the track is sleeved on the front wheel and the rear wheel.

[0012] The first roller brush is positioned corresponding to the front wheel, and the deviation value is the projection of the horizontal radial line of the front end of the outer periphery of the first roller brush toward the front wheel located in front of the track.

[0013] Furthermore, the roller assemblies are divided into two sets, which are respectively located on the left and right sides of the housing; and the two front wheels are connected by a front connecting shaft, and the two rear wheels are connected by a rear connecting shaft.

[0014] The first cleaning component is located between the two front wheels.

[0015] Furthermore, it also includes a transmission mechanism, which includes a first gear, a second gear, and a third gear. The first gear is coaxially connected to the front wheel or the front connecting shaft, the third gear is coaxially connected to the roller, and the second gear is located between the first gear and the third gear, and meshes with the first gear and the third gear respectively.

[0016] Furthermore, it also includes a second cleaning assembly disposed between the two rear wheels. The second cleaning assembly includes a second roller and a second roller brush. The second roller is disposed at the rear side of the bottom of the housing, and the second roller brush is sleeved on the second roller.

[0017] Furthermore, the projection of the rear end of the outer periphery of the second roller towards the horizontal radial line of the rear wheel is located behind the track.

[0018] Furthermore, the horizontal distance between the rear end of the outer periphery of the second roller brush and the rear end of the outer periphery of the track ranges from 10 to 50 mm.

[0019] Furthermore, the first cleaning component also includes a mounting sleeve, which is fitted onto the first roller, and the first roller brush is fitted onto the mounting sleeve; wherein, the outer wall surface of the mounting sleeve is provided with a positioning groove, and the inner wall surface of the first roller brush is provided with a positioning protrusion, the positioning protrusion being interference-fitted with the positioning groove.

[0020] The technical solutions provided in this application have the following advantages compared with the prior art:

[0021] The swimming pool cleaning robot provided in this application includes a shell, a walking mechanism, and a first cleaning component. The walking mechanism includes a roller assembly rotatably mounted on the shell. The first cleaning component includes a first roller and a first brush. The first roller is located at the front of the bottom of the shell, and the first brush is sleeved on the first roller. The projection of the horizontal radial line of the outermost point of the first brush toward the roller assembly is located outside the roller assembly. By placing the first brush at the front of the shell, when the swimming pool cleaning robot moves forward under the drive of the walking mechanism and touches a wall, the first brush contacts the wall first, rotates, and generates friction between the brush and the wall. Under the drive of the driving force and friction, the robot can lift its head and achieve wall climbing. Therefore, placing the first brush at the front, compared to the roller assembly, facilitates wall climbing, increases the success rate, simplifies the structural design, and reduces overall complexity. This optimization makes the swimming pool robot easier to control and effectively improves wall climbing efficiency. Meanwhile, the front-mounted design of the first roller brush in this application enables cleaning of corner areas, expanding the cleaning area and improving cleaning effectiveness. Furthermore, simplified design and optimized control also help reduce manufacturing and maintenance costs, providing users with a more cost-effective solution. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0025] Figure 1 This is a schematic diagram of the structure of a cleaning robot provided in an embodiment of this application;

[0026] Figure 2 for Figure 1 Another structural diagram from another angle;

[0027] Figure 3 for Figure 2 A sectional view;

[0028] Figure 4 for Figure 1 A schematic diagram of the structure after removing some of the components;

[0029] Figure 5 for Figure 4 A schematic diagram of the structure of the first roller brush.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Housing; 1a. Brush chamber; 1b. Water inlet; 1c. Mounting chamber;

[0032] 2. Walking mechanism; 21. Roller assembly; 211. Front wheel; 212. Rear wheel; 213. Track;

[0033] 3. First cleaning component; 31. First roller; 32. First roller brush; 321. Positioning protrusion; 33. Mounting sleeve; 33a. Positioning groove;

[0034] 4. Transmission mechanism; 41. First gear; 42. Second gear; 43. Third gear;

[0035] 5. Second cleaning component; 51. Second roller; 52. Second roller brush. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0038] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, this application provides a swimming pool cleaning robot, mainly used for cleaning swimming pools. It includes a shell 1, a walking mechanism 2, a cleaning mechanism, and a filter device, a flow guiding device, a control module, a power module, etc., disposed in the mounting cavity 1c of the shell 1.

[0040] The housing 1 has an inlet 1b and an outlet. A filter device is positioned between the inlet 1b and the outlet to filter the flowing water. The filter device can be in the form of a filter basket or a filter cartridge. The core component of the filter device is a filter element such as filter paper or a coarse mesh. The filter device is typically designed as a removable module to facilitate cleaning, replacement of the filter screen, or replacement of the filter cartridge.

[0041] The flow guiding device includes a pump motor and a flow guiding pipe, which drives water to be drawn in from the inlet 1b, filtered by the filter device, and then discharged as clean water from the outlet. The flow guiding mechanism usually includes control elements such as a check valve or a gravity valve.

[0042] The traveling mechanism 2 includes a drive motor and a roller assembly 21, which is rotatably mounted on the housing 1. In some machines, the pump motor and guide pipe can also assist in the movement or steering of the machine body through fluid injection.

[0043] The control module and power module are housed within a sealed control box. The power module provides power and is used for charging via the base station.

[0044] The cleaning mechanism includes a first cleaning component 3, and a roller brush cavity 1a is provided on the front side of the bottom of the housing 1. It is installed in the installation cavity 1c for scrubbing the bottom and side walls of the pool.

[0045] like Figures 1 to 5 As shown, in the technical solution of this embodiment, the first cleaning component 3 includes a first roller 31 and a first roller brush 32. The first roller 31 is located at the front side of the bottom of the housing 1, and the first roller brush 32 is sleeved on the first roller 31. The projection of the horizontal radial line of the front end of the outer periphery of the first roller brush 32 toward the roller assembly 21 is located outside the roller assembly 21.

[0046] This application positions the first roller brush 32, located at the front of the housing 1, so that when the pool cleaning robot moves forward under the drive of the walking mechanism 2 and touches the wall, the first roller brush 32 contacts the cavity wall first. The first roller brush 32 rotates, generating friction between the first roller brush 32 and the wall. Under the drive force and friction, the pool robot can lift its head and achieve the wall climbing function. Thus, compared with the roller assembly 21, the first roller brush 32 is positioned in front, which is beneficial for wall climbing and has a high success rate. It also simplifies its structural design, thereby reducing the overall complexity. This optimization makes the pool robot easier to control and effectively improves the wall climbing efficiency. In addition, the simplified design and optimized control also help reduce manufacturing and maintenance costs, providing users with a more cost-effective solution.

[0047] In related technologies, the track 213 usually contacts the wall first. Due to the structure of the track 213, the contact area between the track 213 and the wall is often very small (the convex edge of the track contacts the wall). However, in this embodiment, the brush blade of the first roller brush 32 is usually relatively soft, so that the first roller brush 32 can have a larger contact area with the wall, thereby generating greater friction.

[0048] Furthermore, if the first roller brush 32 is not designed to be front-mounted, when the pool cleaning robot reaches the corner area, the track 213 contacts the wall first, and at this time there is a certain gap between the first roller brush 32 and the wall, so the first roller brush 32 cannot clean the corner area. However, in the front-mounted design of the first roller brush 32 in this application, the first roller brush 32 has already contacted the wall before the track contacts it, and due to the flexibility of the first roller brush 32, it can achieve close contact with the corner area. At this time, the rotating first roller brush 32 can clean the corner area, thereby expanding the cleaning area and improving the cleaning effect.

[0049] In the technical solution of this embodiment, the deviation value D between the front end of the outer periphery of the first roller brush 32 and the outer periphery of the roller assembly 21 ranges from 10 to 50 mm.

[0050] When the deviation value D is too small and less than 10mm, the roller assembly 21 will come into contact with the wall when the brush blade of the first roller brush 32 undergoes a small deformation. At this time, the friction between the first roller brush 32 and the wall may not be enough to make the pool robot lift its head, and it may not be able to achieve the wall climbing effect.

[0051] When the deviation value D is too large and greater than 50mm, the roller assembly 21 may not contact the cavity wall when the pool robot raises its head at a large angle. This will prevent the roller assembly 21 from moving on the wall, meaning it can only raise its head but cannot climb the wall. It may even cause the robot to overturn due to excessive head raising.

[0052] Considering the overall structural coordination of the pool robot, the roller assembly 21 needs to have a certain size to ensure smooth movement of the pool robot in the water. The first roller brush 32 is installed at the bottom of the housing 1, and its lower end must be approximately flush with or slightly beyond the lower end of the roller assembly 21. The size of the first roller brush 32 is limited; when the deviation D exceeds 25mm, the installation position of the first roller brush 32 needs to be carefully considered, which would introduce too many additional structural elements. Therefore, in this embodiment, the deviation D between the front end of the first roller brush 32 and the outer periphery of the roller assembly 21 is in the range of 10-25mm. This facilitates the installation of the first roller brush 32, simplifies the structure, and is easy to implement.

[0053] In the technical solution of this embodiment, preferably, the deviation value D is 15mm. Positioning the first roller brush 32 15mm forward relative to the roller assembly 21 can achieve a better wall-climbing effect.

[0054] like Figures 1 to 4 As shown, in the technical solution of this embodiment, the roller assembly 21 includes a front wheel 211, a rear wheel 212 and a track 213. The front wheel 211 and the rear wheel 212 are rotatably connected to the housing 1 at intervals along the front-rear direction of the housing 1, and the track 213 is sleeved on the front wheel 211 and the rear wheel 212.

[0055] The first roller brush 32 is set to correspond to the front wheel 211, and the deviation value D is the difference in the horizontal direction between the front end of the outer periphery of the first roller brush 32 and the front end of the outer periphery of the track 213.

[0056] Understandably, by connecting the front wheel 211 and the rear wheel 212 with the track 213, the synchronous rotation of the front wheel 211 and the rear wheel 212 can be achieved, improving the walking stability of the pool robot. At the same time, the track 213 can generate a large friction force with the pool whether walking on the bottom wall or the side wall of the pool, which can ensure propulsion and prevent slippage.

[0057] It should be noted that in this application, after the pool robot raises its head with the assistance of the first roller brush 32, the subsequent movement is still achieved by the track 213 contacting and rubbing against the wall, and walking on the wall is achieved through the track 213.

[0058] like Figures 1 to 4 As shown, in the technical solution of this embodiment, there are two sets of roller assemblies 21, which are respectively located on the left and right sides of the housing 1; and the two front wheels 211 are connected by a front connecting shaft, and the two rear wheels 212 are connected by a rear connecting shaft.

[0059] The first cleaning component 3 is located between the two front wheels 211.

[0060] Understandably, the two sets of roller assemblies 21 are symmetrically arranged to improve the stability of the pool robot's movement. The two front wheels 211 are connected by a front connecting shaft, enabling synchronous rotation of the two front wheels 211; the two rear wheels 212 are connected by a rear connecting shaft, enabling synchronous rotation of the two rear wheels 212.

[0061] In this embodiment, the output end of the drive motor is used to drive one front wheel 211, or the output end of the drive motor is used to drive the front connecting shaft, so as to drive two front wheels 211 at the same time, and then drive two rear wheels 212 to rotate synchronously through the track 213.

[0062] like Figure 4 As shown, the technical solution of this embodiment also includes a transmission mechanism 4, which includes a first gear 41, a second gear 42, and a third gear 43. The first gear 41 is coaxially connected to the front wheel 211 or the front connecting shaft, and the third gear 43 is coaxially connected to the roller. The second gear 42 is located between the first gear 41 and the third gear 43 and meshes with the first gear 41 and the third gear 43 respectively. Through the cooperation of the first gear 41, the second gear 42, and the third gear 43, the power of the drive motor can be transmitted to the first roller 31. In this way, while the drive motor starts and drives the roller assembly 21 to move, causing the pool robot to move, the first cleaning assembly 3 also starts to rotate and perform the brushing work.

[0063] like Figures 1 to 4 As shown, in the technical solution of this embodiment, a second cleaning component 5 is also provided between the two rear wheels 212. The second cleaning component 5 includes a second roller 51 and a second roller brush 52. The second roller 51 is located at the rear side of the bottom of the housing 1, and the second roller brush 52 is sleeved on the second roller 51.

[0064] Understandably, by setting up the second cleaning component 5, on the one hand, further scrubbing can be performed to improve the cleaning effect; on the other hand, when the pool cleaning robot moves backward, the second cleaning component 5 can perform preliminary scrubbing, and the first cleaning component 3 forms a secondary scrubbing, thus improving the cleaning effect.

[0065] like Figure 3 As shown, the bottom of the housing 1 is provided with a roller brush cavity 1a on the front and rear sides respectively. The first cleaning component 3 and the second cleaning component 5 are respectively disposed in the roller brush cavity 1a for brushing the bottom wall and side wall of the pool.

[0066] like Figure 1 As shown, in the technical solution of this embodiment, the projection of the horizontal radial line of the rear end of the outer periphery of the second roller brush 52 toward the rear wheel 212 is located behind the track 213.

[0067] In this embodiment, by placing the second roller brush 52 at the rear of the housing 1, when the pool cleaning robot retreats to the wall driven by the walking mechanism 2, the second roller brush 52 contacts the cavity wall first. The second roller brush 52 rotates, generating friction between itself and the wall. Driven by both the driving force and friction, this assists the pool robot in raising its head and climbing the wall. Thus, this embodiment allows the pool robot to climb walls whether moving forward or backward without needing to turn around to adjust its direction. Simultaneously, the rear-positioned design of the second roller brush 52 also enables cleaning of corners when retreating.

[0068] Furthermore, the horizontal gap between the rear end of the track 213 and the outer periphery is 10-50mm.

[0069] In this embodiment, the horizontal distance between the rear end of the outer periphery of the second roller brush 52 and the rear end of the outer periphery of the roller assembly 21 is 10-25mm. This facilitates the installation of the second roller brush 5232, simplifies the structure, and is easy to implement.

[0070] Preferably, the horizontal distance between the rear end of the outer periphery of the second roller brush 52 and the rear end of the outer periphery of the track 213 is 15mm. This allows for better wall-climbing performance when moving backwards onto a wall.

[0071] like Figure 3 , Figure 4 and Figure 5 As shown, in the technical solution of this embodiment, the first cleaning component 3 further includes a mounting sleeve 33, which is sleeved on the first roller 31, and the first roller brush 32 is sleeved on the mounting sleeve 33; wherein, the outer wall surface of the mounting sleeve 33 is provided with a positioning groove 33a, and the inner wall surface of the first roller brush 32 is provided with a positioning protrusion 321, and the positioning protrusion 321 and the positioning groove 33a are interference fit.

[0072] It is understandable that the first roller brush 32 and the first roller 31 are connected by the mounting sleeve 33, and the positioning groove 33a of the mounting sleeve 33 and the positioning protrusion 321 of the first roller brush 32 cooperate to achieve quick assembly of the first roller brush 32 and the mounting sleeve 33, and the assembly is highly stable and not easy to detach; at the same time, the design of the mounting sleeve 33 can facilitate the replacement of the first roller brush 32.

[0073] Similarly, in this embodiment, the second cleaning component 5 also includes a second mounting sleeve, which is fitted onto the second roller 51, and the second roller brush 52 is fitted onto the second mounting sleeve; wherein, the outer wall surface of the second mounting sleeve is provided with a second positioning groove, and the inner wall surface of the second roller brush 52 is provided with a second positioning protrusion, and the second positioning protrusion is interference-fitted with the second positioning groove.

[0074] like Figure 2 and Figure 4 As shown, in the technical solution of this embodiment, there are two mounting sleeves 33, which are coaxial and spaced apart; there are two first roller brushes 32, each of which is fitted onto a mounting sleeve 33.

[0075] Understandably, the design of the two mounting sleeves 33 and the two first roller brushes 32 allows the first cleaning component 3 to have a certain buffering function when there is a small speed difference between the left and right sides.

[0076] Similarly, in this embodiment, there are two second mounting sleeves, which are coaxial and spaced apart; there are two second roller brushes 52, each of which is fitted onto a second mounting sleeve.

[0077] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0078] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0079] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A swimming pool cleaning robot, characterized in that, include: Shell (1); The walking mechanism (2) includes a roller assembly (21) that is rotatably disposed in the housing (1). The first cleaning component (3) includes a first roller (31) and a first roller brush (32). The first roller (31) is located at the front side of the bottom of the housing (1), and the first roller brush (32) is sleeved on the first roller (31). Wherein, the projection of the horizontal radial line of the front end of the outer periphery of the first roller brush (32) toward the roller assembly (21) is located outside the roller assembly (21); The roller assembly (21) includes a front wheel (211), a rear wheel (212) and a track (213). The front wheel (211) and the rear wheel (212) are rotatably connected to the housing (1) at intervals along the front-rear direction of the housing (1). The track (213) is sleeved on the front wheel (211) and the rear wheel (212). The first roller brush (32) is set corresponding to the front wheel (211), and the deviation value is that the projection of the horizontal radial line of the front end of the outer periphery of the first roller brush (32) toward the front wheel (211) is located in front of the track (213); It also includes a transmission mechanism (4), which includes a first gear (41), a second gear (42) and a third gear (43). The first gear (41) is coaxially connected to the front wheel (211) or the front connecting shaft, and the third gear (43) is coaxially connected to the roller. The second gear (42) is located between the first gear (41) and the third gear (43) and meshes with the first gear (41) and the third gear (43) respectively.

2. The pool cleaning robot according to claim 1, characterized in that, The deviation D between the front end of the outer periphery of the first roller brush (32) and the outer periphery of the roller assembly (21) ranges from 10 to 50 mm.

3. The swimming pool cleaning robot according to claim 2, characterized in that, The deviation value D is 15 mm.

4. The swimming pool cleaning robot according to claim 1, characterized in that, The roller assemblies (21) are divided into two groups, and the two groups of roller assemblies (21) are respectively located on the left and right sides of the housing (1); and the two front wheels (211) are connected by a front connecting shaft, and the two rear wheels (212) are connected by a rear connecting shaft. The first cleaning component (3) is located between the two front wheels (211).

5. The pool cleaning robot according to claim 1, characterized in that, It also includes a second cleaning assembly (5) disposed between the two rear wheels (212), the second cleaning assembly (5) including a second roller (51) and a second roller brush (52), the second roller (51) being disposed at the rear side of the bottom of the housing (1), and the second roller brush (52) being sleeved on the second roller (51).

6. The pool cleaning robot according to claim 5, characterized in that, The projection of the horizontal radial line of the outer periphery of the second roller brush (52) toward the rear wheel (212) is located behind the track (213).

7. The pool cleaning robot according to claim 6, characterized in that, The horizontal distance between the rear end of the outer periphery of the second roller brush (52) and the rear end of the outer periphery of the track (213) is 10-50 mm.

8. The pool cleaning robot according to claim 1, characterized in that, The first cleaning component (3) further includes a mounting sleeve (33), which is fitted onto the first roller (31), and the first roller brush (32) is fitted onto the mounting sleeve (33); wherein, the outer wall surface of the mounting sleeve (33) is provided with a positioning groove (33a), and the inner wall surface of the first roller brush (32) is provided with a positioning protrusion (321), and the positioning protrusion (321) is interference-fitted with the positioning groove (33a).

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