Swimming pool cleaning trolley with internal driving device

Abstract

The utility model relates to the technical field of intelligent cleaning equipment, and particularly discloses a swimming pool cleaning vehicle with an internal driving device. A filtering device is arranged in the swimming pool cleaning vehicle body, a water inlet communicated with the filtering device is formed in the bottom of the swimming pool cleaning vehicle body, and a water outlet is formed in the side or / and the upper portion of the swimming pool cleaning vehicle body; a rolling brush is arranged at the front end of the body in the advancing direction, walking wheels are arranged on the two sides of the body and comprise front wheels and rear wheels, a driving motor is arranged in the swimming pool cleaning trolley body, and the rear wheels drive the front wheels and the rolling brush to rotate simultaneously in the same direction through a first transmission assembly. The motor, the material, the manufacturing cost, the process and the like are saved; and the structure is simple, and the walking process is more stable. And the swimming pool cleaning vehicle is more stable when climbing on the wall and climbing the wall, and meanwhile, the swimming pool cleaning vehicle has better effects in climbing, obstacle crossing and the like.

Description

Technical Field

[0001] This invention relates to the field of intelligent cleaning equipment technology, specifically to a pool cleaning vehicle, and more particularly to a pool cleaning vehicle with an internal drive unit. Background Technology

[0002] In the field of pool cleaning, in recent years, pool cleaning trucks (also known as "pool cleaning vehicles," "underwater cleaning robots," or "pool cleaning robots") have gradually gained popularity among users as a professional pool cleaning equipment, and their importance is becoming increasingly apparent. Especially in private and public pools, these pool cleaning trucks can save labor costs and perform repetitive daily tasks. Therefore, they have gradually become the preferred robotic vehicle for underwater pool cleaning.

[0003] However, existing pool cleaning vehicles are all operating underwater. During the process of walking or climbing, they are affected by the buoyancy of the water and the impact of the water jets. This causes instability in the process of walking or climbing.

[0004] Meanwhile, traditional pool cleaning trucks typically require a separate motor to drive a rotating roller brush to clean stubborn stains at the front or bottom. However, this structure is complex and increases costs, and the front motor is also prone to damage during use, resulting in repeated machine repairs.

[0005] In a Chinese invention patent application, such as publication number CN118704837A, titled "Pool Cleaning Robot," published on September 27, 2024, a structure of a pool cleaning robot is disclosed; it includes: a main body

[11] , wheels, a roller brush, a motor

[19] , a motor

[19] gear, a first transmission gear

[172] , a second transmission gear

[173] , and a roller brush gear

[174] . The motor

[19] is located within the main body

[11] , and the wheels, the roller brush, the first transmission gear

[172] , and the second transmission gear

[173] are all mounted on the main body

[11] . The two transmission gears

[173] and the roller brush gear

[174] are rotatably mounted on the main body

[11] . The motor gear

[19] , the first transmission gear

[172] , the second transmission gear

[173] , and the roller brush gear

[174] mesh sequentially. The wheel is provided with an external gear ring. The motor gear

[19] meshes with the external gear ring, and the axes of the motor gear

[19] , the first transmission gear

[172] , the second transmission gear

[173] , and the roller brush gear

[174] are all lower than the axis of the wheel in the vertical direction. (This is in conjunction with the appendix of this application.) Figure 2It is clear that its main structure involves a motor gear driving a first gear, which in turn drives a second gear, and finally a roller brush gear. While this can save on gear motors, the overlapping of multiple gears makes it prone to misalignment and damage when the gearbox encounters sand, dust, or other particles from the bottom of the pool.

[0006] Meanwhile, traditional underwater pool cleaning vehicles have their wheels or tracks located on the outer sides, which can easily cause the underwater robot to run aground or have difficulty overcoming obstacles.

[0007] Therefore, how to make underwater pool cleaning vehicles move more smoothly, easily overcome obstacles, and save on manufacturing costs and processes are technical problems that the industry urgently needs to solve. Summary of the Invention

[0008] The present invention aims to overcome the shortcomings of the prior art and provide a pool cleaning vehicle with an internal drive device to solve the problems of unstable walking, high cost and difficulty in overcoming obstacles of existing pool cleaning vehicles.

[0009] The technical solution adopted by the present invention is to provide a pool cleaning vehicle with an internal drive device, which includes a pool cleaning vehicle body, a filter device is provided inside the pool cleaning vehicle body, a water inlet communicating with the filter device is provided at the bottom of the pool cleaning vehicle body, and a water outlet is provided on the side and / or the top of the pool cleaning vehicle body.

[0010] During the cleaning process, wastewater in the pool is drawn in through the inlet at the bottom and flows through the filtration device, which adsorbs or collects dirt and grime from the wastewater. The filtered water then flows out through the outlet, thus cleaning the pool or ordinary water tank.

[0011] A roller brush is provided at the front end of the main body in the direction of travel. During cleaning, the roller brush brings water and debris into the water inlet located at the bottom of the main body.

[0012] When swimming pools or regular pools are not used for a period of time, cotton-like dirt tends to accumulate at the bottom; mud and dust also tend to accumulate. Therefore, adding a roller brush to scrape and collect the dirt at the bottom makes the cleaning effect better.

[0013] The main body is equipped with wheels on both sides, which provide the power for the pool cleaning vehicle to move. Under normal operation, the wheels are located on both sides of the main body, with one wheel at the front and one at the rear on each side.

[0014] The walking wheels include front wheels and rear wheels. A drive motor is installed inside the body of the pool cleaning vehicle. The motor output shaft of the drive motor is connected to the rear wheel and provides power to the rear wheel; or, the motor output shaft of the drive motor is connected to at least one conversion component, and the conversion component is connected to the rear wheel and provides power to the rear wheel.

[0015] The conversion component is at least one conversion gear.

[0016] The rear wheel drives the front wheel and the roller brush to rotate simultaneously and in the same direction through the first transmission component, which is a ring-shaped belt structure.

[0017] A single motor drives four wheels and a roller brush to rotate simultaneously in the same direction. The structure is simple, reducing manufacturing and labor costs. The simultaneous rotation of the four wheels also makes the movement more stable.

[0018] Furthermore, the front wheel includes a front wheel axle fixed to the body and a front wheel hub disposed at the end of the front wheel axle. A first rotating shaft gear is disposed on the end of the front wheel axle or the inner side of the front wheel hub. The first rotating shaft gear is disposed around the front wheel axle at the center of the front wheel hub.

[0019] The rear wheel includes a rear wheel axle fixed to the body and a rear wheel hub provided at the end of the rear wheel axle. A second rotating shaft gear is provided on the end of the rear wheel axle or the inner side of the rear wheel hub. Similarly, the second rotating shaft gear is located at the center of the rear wheel hub and is arranged around the rear wheel axle.

[0020] A drive gear is provided on the output shaft of the motor. The drive gear meshes with the second rotating shaft gear and drives the second rotating shaft gear to rotate. The second rotating shaft gear drives the first rotating shaft gear to rotate through the first transmission component.

[0021] Furthermore, the first transmission component is a transmission track, the outer circumference of the transmission track is provided with a first transmission tooth, and the inner circumference of the transmission track is provided with a second transmission tooth.

[0022] The second transmission gear meshes with the first shaft gear and the second shaft gear respectively, thereby driving the front wheel and the rear wheel to rotate simultaneously.

[0023] Furthermore, a roller brush gear is provided on the side end of the roller brush. The roller brush gear is fixed to one end of the roller brush, and the roller brush is rotatably disposed at the lower front part of the main body. When the roller brush gear rotates, it can drive the roller brush to rotate together.

[0024] Furthermore, the first transmission tooth meshes with the roller brush gear. That is, when the transmission track is moving, the first transmission tooth located on the outer periphery of the track meshes with the roller brush gear, which can drive the roller brush gear to rotate, thereby driving the roller brush to rotate.

[0025] Alternatively, a first toothed ring is provided on the front wheel hub, and the roller brush gear meshes with the first toothed ring.

[0026] With the above configuration, the roller brush gear can be driven by either the hub of the walking wheel or the first transmission tooth of the transmission component, both of which can achieve the purpose of driving the walking wheel, transmission belt and roller brush with a single motor in this invention.

[0027] Furthermore, the first transmission component is located on one side of the walking direction of the pool cleaning vehicle body, and drives the front wheel, rear wheel and roller brush on that side to rotate simultaneously and in the same direction.

[0028] Furthermore, it also includes a second transmission assembly, which is located on the other side of the walking direction of the pool cleaning vehicle body, and simultaneously drives the front wheel and rear wheel on the other side to rotate in the same direction.

[0029] Furthermore, a tensioning wheel is provided below the first transmission component and / or the second transmission component. The tensioning wheel is fixed to the body and is used to adjust the tension of the first transmission component and / or the second transmission component.

[0030] Ideally, two tensioning rollers should be provided on each side: the first tensioning roller should be located slightly forward, and the second tensioning roller should be located slightly backward. The first and second tensioning rollers should be aligned horizontally so that they are on the same horizontal line.

[0031] Furthermore, the bottom plane of the first transmission component and / or the second transmission component is lower than the bottom plane of the pool cleaning vehicle body.

[0032] The first transmission component and / or the second transmission component are lower than the bottom of the pool cleaning vehicle. This way, when encountering obstacles, the first transmission component and / or the second transmission component can directly drive over them without getting stuck.

[0033] Furthermore, the first transmission component and / or the second transmission component, in orthographic projection, are disposed inside both sides of the pool cleaning vehicle body, while the wheels are disposed outside the pool cleaning vehicle body.

[0034] This design ensures that the drive structure of the pool cleaning vehicle includes both the power of the wheels and the power of the first and / or second transmission components, making the pool cleaning vehicle more stable when climbing walls and providing better performance in climbing slopes and overcoming obstacles.

[0035] The beneficial effects of the pool cleaning vehicle with an internal drive device of the present invention are as follows:

[0036] The main advantages of the pool cleaning vehicle with an internal drive unit provided by this invention are as follows:

[0037] 1. No separate motor drive is required for the roller brush, saving materials, manufacturing costs, and processes;

[0038] 2. By cleverly connecting the transmission components with the walking wheels and roller brushes, a single motor can simultaneously drive the transmission components, walking wheels, roller brushes, and other components to rotate in the same direction. This results in a simple structure and smoother movement during travel.

[0039] 3. The first transmission component and / or the second transmission component are located inside both sides of the pool cleaning vehicle body and are lower than the bottom of the pool cleaning vehicle. This makes the pool cleaning vehicle more stable when climbing walls and has better performance in climbing slopes and overcoming obstacles.

[0040] 4. The transmission track can be equipped with transmission teeth on both sides to drive the rotation of the roller brush, or the roller brush can be driven to rotate by setting toothed rings on the walking wheels. Its structure is simple and the implementation methods are diversified and user-friendly. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a pool cleaning vehicle with an internal drive unit provided in an embodiment of the present invention. Figure 1 .

[0042] Figure 2 This is a schematic diagram of the structure of a pool cleaning vehicle with an internal drive unit provided in an embodiment of the present invention. Figure 2 .

[0043] Figure 3 This is a schematic diagram of the structure of a pool cleaning vehicle with an internal drive unit provided in an embodiment of the present invention. Figure 3 .

[0044] Figure 4 This is a schematic diagram illustrating the connection structure between the walking wheel and the first transmission assembly, the second transmission assembly, and the power system such as the roller brush in the embodiment. Figure 1 .

[0045] Figure 5This is a schematic diagram illustrating the connection structure between the walking wheel and the first transmission assembly, the second transmission assembly, and the power system such as the roller brush in the embodiment. Figure 2 .

[0046] Figure 6 This is a schematic diagram illustrating the connection structure between the traveling wheel, tension wheel, drive gear, and first transmission component in the embodiment.

[0047] Figure 7 for Figure 6 A magnified structural diagram of point A in the middle.

[0048] Figure 8 This is a schematic diagram of the connection structure between the first transmission component and the front and rear wheels of the walking wheel in the embodiment.

[0049] Figure 9 for Figure 8 A magnified structural diagram at point B in the middle.

[0050] Figure 10 This is a schematic diagram of the structure in the embodiment, showing a first toothed ring on the walking wheel.

[0051] Labeling: Body 1, Outlet 2, Traveling wheel 3, Roller brush 4, Roller brush gear 5, Tensioning wheel 6, Drive gear 7, First transmission assembly 11, Second transmission assembly 12, First rotating shaft gear 13, Second rotating shaft gear 14, First transmission gear 15, Second transmission gear 16, First gear ring 17, Second gear ring 18, Conversion gear 19. Detailed Implementation

[0052] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate the following embodiments, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0053] Example 1

[0054] like Figure 1-10 As shown in the figure, this embodiment provides a pool cleaning vehicle with an internal drive device, which includes a pool cleaning vehicle body. The pool cleaning vehicle body is provided with a filter device (not shown in the figure). In this embodiment, the filter device is specifically a filter basket with filter holes on the wall. The bottom of the pool cleaning vehicle body 1 is provided with a water inlet communicating with the filter device, and the side and / or top of the pool cleaning vehicle body 1 is provided with a water outlet 2.

[0055] During the cleaning process, wastewater in the pool is drawn in through the inlet at the bottom and flows through the filter basket of the filtration device. The filtration device absorbs or collects the dirt and debris in the wastewater, and the filtered water flows out from outlet 2, thus cleaning the pool or ordinary water tank. After cleaning, simply empty the waste or dirt from the filter device and clean it.

[0056] A roller brush 4 is provided at the front end of the main body 1 in the direction of travel. The roller brush 4 brings water and garbage into the water inlet located at the bottom of the main body 1 during cleaning.

[0057] When swimming pools or regular pools are not used for a period of time, cotton-like dirt tends to accumulate at the bottom; mud and dust also tend to accumulate. Therefore, adding a roller brush 4 scrapes and collects the dirt at the bottom, resulting in better cleaning.

[0058] The main body 1 is provided with two walking wheels 3 on both sides, which provide the power for the pool cleaning vehicle to move. Under normal operation, the walking wheels 3 are located on the two sides of the main body 1, with one in front and one in the back on each side, for a total of four walking wheels 3. Figure 10 The diagram in the middle shows the structure of the walking wheel 3, which can be used for reference.

[0059] Figure 2 In the middle, is Figure 1 Another perspective of the three-dimensional diagram. Figure 3 Is Figure 2 Based on this, a schematic diagram of the transmission structure in the rear wheel of the walking wheel 3 is shown. The walking wheel 3 includes a front wheel and a rear wheel. A drive motor (not shown in the figure) is installed inside the body 1 of the pool cleaning vehicle. The motor output shaft of the drive motor is connected to one of the rear wheels and provides power to the rear wheel. It can also drive both rear wheels at the same time (driving the rear wheel axle is sufficient, which is not shown in this figure). The rear wheel drives the front wheel and the roller brush 4 to rotate simultaneously and in the same direction through the first transmission component 11. The first transmission component 11 has an annular belt structure.

[0060] In this embodiment, a single motor drives four walking wheels 3 and a roller brush 4 to rotate simultaneously and in the same direction. This results in a simple structure that reduces manufacturing and labor costs. The simultaneous rotation of the four walking wheels 3 also makes the movement more stable.

[0061] In one embodiment, the front wheel includes a front wheel axle fixed to the body 1 and a front wheel hub disposed at the ends of both sides of the front wheel axle. A first rotating shaft gear 13 is disposed at the end of the front wheel axle or on the inner side of the front wheel hub. The first rotating shaft gear 13 is disposed around the front wheel axle at the center of the front wheel hub.

[0062] In this embodiment, the front wheel hub refers to the entire circular component, centrally mounted on the axle, that supports the tire (or tread) within the inner contour of the traveling wheel 3. In this embodiment, it can be made of metal, rubber, or other materials. It is also called a wheel rim, wheel, tire rim, etc. Wheel hubs come in many varieties depending on their diameter, width, molding method, and materials; these are all known and publicly available technologies, and will not be described in detail in this embodiment.

[0063] The rear wheel includes a rear axle fixed to the main body 1, and a rear hub disposed at the end of the rear axle. A second rotating gear 14 is disposed on the end of the rear axle or on the inner side of the rear hub. Similarly, the second rotating gear 14 is disposed around the rear axle at the center of the rear hub. Likewise, the rear hub has the same structure and material as the front hub.

[0064] A drive gear 7 is provided on the output shaft of the motor. The drive gear 7 meshes with the second rotating shaft gear 14 and drives the second rotating shaft gear 14 to rotate. The second rotating shaft gear 14 drives the first rotating shaft gear 13 to rotate through the first transmission component 11.

[0065] In one embodiment, the first transmission component 11 is a transmission track, the outer circumference of the transmission track is provided with a first transmission tooth 15, and the inner circumference of the transmission track is provided with a second transmission tooth 16.

[0066] The second transmission gear 16 meshes with the first shaft gear 13 and the second shaft gear 14 respectively, thereby driving the front wheel and the rear wheel to rotate simultaneously.

[0067] In one embodiment, a roller brush gear 5 is provided on the side end of the roller brush 4. The roller brush gear 5 is fixed to one end of the roller brush 4, and the roller brush 4 is rotatably disposed at the lower front part of the body 1. When the roller brush gear 5 rotates, it can drive the roller brush 4 to rotate together.

[0068] like Figure 7 , Figure 8 , Figure 9 As shown, in one embodiment, a first toothed ring 17 is provided on the front wheel hub, and the roller brush gear 5 meshes with the toothed ring.

[0069] In this embodiment, the first toothed ring 17 is disposed on the inner side of the outer circumference of the front wheel hub, that is, close to the interior of the body 1.

[0070] like Figure 4 , Figure 5 , Figure 7 , Figure 9As shown, in a specific implementation, a drive gear 7 is provided on the output shaft of the motor. The drive gear 7 meshes with the second rotating shaft gear 14 and drives the second rotating shaft gear 14 to rotate. The second rotating shaft gear 14 drives the first rotating shaft gear 13 to rotate through the first transmission assembly 11. During the rotation of the first rotating shaft gear 13, the first gear ring 17 also rotates. Then, the roller brush gear 5 meshing with the first gear ring 17 is also driven to rotate by the first gear ring 17, thereby achieving the purpose of driving the walking wheel 3 and the roller brush 4 to rotate simultaneously through one motor.

[0071] In one embodiment, the first transmission component 11 is disposed on one side of the walking direction of the pool cleaning vehicle body 1, and drives the front wheel, rear wheel and roller brush 4 on that side to rotate simultaneously and in the same direction.

[0072] like Figure 4 , Figure 5 As shown, in one embodiment, a second transmission component 12 is also included. The second transmission component 12 is disposed on the other side of the walking direction of the pool cleaning vehicle body 1, and simultaneously drives the front wheel and rear wheel on the other side to rotate in the same direction.

[0073] The transmission assembly (referring to the transmission track in this embodiment) can be a single piece or two pieces on both the left and right sides. In this embodiment, transmission assemblies (i.e., the first transmission assembly 11 and the second transmission assembly 12) are provided on both sides, which makes the pool cleaning vehicle more stable and prevents it from deviating during operation. If only one side is provided, the other side will be loose and free, allowing the wheel on that side to swing freely during movement, which can easily cause directional deviations.

[0074] like Figure 4 , Figure 5 As shown, when modifying this embodiment, the positions of the first transmission component 11 and the second transmission component 12 do not necessarily need to be specified. When the first transmission component 11 is defined as being located on the left side of the pool cleaning vehicle's forward direction, the second transmission component 12 is defined as being located on the right side of the pool cleaning vehicle's forward direction; conversely, when the first transmission component 11 is defined as being located on the right side of the pool cleaning vehicle's forward direction, the second transmission component 12 is defined as being located on the left side of the pool cleaning vehicle's forward direction. The transmission structure and effects remain the same and are also supported and protected by this invention.

[0075] In one embodiment, a tensioning wheel 6 is further provided below the first transmission component 11 and / or the second transmission component 12. The tensioning wheel 6 is fixed to the body 1 and is used to adjust the tension of the first transmission component 11 and / or the second transmission component 12.

[0076] The function of tensioner 6 is to adjust the tension of the drive track after it has been installed.

[0077] Preferably, two tensioning rollers 6 are provided on each side, with the first tensioning roller 6 located slightly forward and the second tensioning roller 6 located slightly backward. The first tensioning roller 6 and the second tensioning roller 6 are aligned horizontally so that they are on the same horizontal line.

[0078] In one embodiment, the bottom plane of the first transmission component 11 or / and the second transmission component 12 is lower than the bottom plane of the pool cleaning vehicle body 1.

[0079] The first transmission component 11 or / and the second transmission component 12 are lower than the bottom of the pool cleaning vehicle. This way, when encountering obstacles, the first transmission component 11 or / and the second transmission component 12 can directly drive over them without getting stuck.

[0080] In one embodiment, the first transmission component 11 and / or the second transmission component 12 are disposed inside both sides of the pool cleaning vehicle body 1 under orthographic projection, while the walking wheels 3 are disposed outside the pool cleaning vehicle body 1.

[0081] This design ensures that the driving structure of the pool cleaning vehicle includes both the power of the walking wheels 3 and the power of the first transmission component 11 and / or the second transmission component 12, making the pool cleaning vehicle more stable when climbing walls and having better performance in climbing slopes and overcoming obstacles.

[0082] Example 2

[0083] like Figure 3 As shown, this embodiment provides a pool cleaning vehicle with an internal drive device. The first transmission assembly 11 is a transmission track, the outer circumference of which is provided with a first transmission tooth 15, and the inner circumference of which is provided with a second transmission tooth 16. Figure 7 As shown in the schematic diagram of this embodiment, the positional relationship between the first transmission tooth 15 and the second transmission tooth 16 can be seen.

[0084] exist Figure 3 As can be clearly seen, the roller brush gear 5 abuts against the first transmission assembly 11, causing the roller brush gear 5 to mesh with the first transmission teeth 15 disposed on the outer circumference of the first transmission assembly 11. That is, when the transmission track moves, the first transmission teeth 15 disposed on the outer circumference of the track mesh with the roller brush gear 5, and the first transmission teeth 15 can drive the roller brush gear 5 to rotate, thereby driving the roller brush 4 to rotate. Other structures are consistent with Embodiment 1 and have the same technical effects, and will not be described in detail here.

[0085] Example 3

[0086] In this embodiment, the first transmission component 11 and / or the second transmission component 12 are metal chain structures (not shown in the figure), which can also achieve the purpose of the present invention. Other structures are consistent with Embodiment 1 and have the same technical effects as Embodiment 1, and will not be described in detail here.

[0087] Example 4

[0088] like Figure 6 , Figure 7 As shown, in this embodiment, the walking wheel 3 includes a front wheel and a rear wheel. The pool cleaning vehicle body 1 is equipped with a drive motor. The motor output shaft of the drive motor is connected to at least one conversion component. The conversion component is connected to the rear wheel and provides power to the rear wheel.

[0089] In this embodiment, the conversion component is specifically a conversion gear 19, which is connected to both the drive gear 7 at the end of the motor output shaft and the second rotating shaft gear 14. Figure 6 , Figure 7 As shown in the schematic diagram of this embodiment, the meshing connection between the drive gear 7 and the second rotating shaft gear 14 can be clearly seen.

[0090] In this embodiment, the number of conversion gears 19 is specifically one. Multiple gears can also achieve meshing and conversion, but the more gears there are, the more complicated the structure becomes. Therefore, one conversion gear 19 is the optimal and simplest.

[0091] Alternatively, the conversion gear 19 is simultaneously connected to the drive gear 7 at the end of the motor output shaft and the second gear ring 18 provided on the rear hub.

[0092] In this embodiment, the second toothed ring 18 is disposed on the inner side of the outer circumference of the front wheel hub, that is, close to the interior of the body 1.

[0093] During operation, after the motor drives the drive gear 7 at the end of the motor output shaft, it rotates, thereby driving the conversion gear 19 to rotate. The conversion gear 19 then drives the second gear ring 18 to rotate. The second gear ring 18 is the outer circumference of the rear wheel hub, so it also drives the rear wheel hub to rotate.

[0094] The other structures are the same as in Embodiment 1 and have the same technical effects as in Embodiment 1, and will not be described in detail here.

[0095] The main advantages of the pool cleaning vehicle with an internal drive unit provided in this embodiment are as follows:

[0096] 1. No separate motor drive is required for the roller brush, saving materials, manufacturing costs, and processes;

[0097] 2. By cleverly connecting the transmission components with the walking wheels and roller brushes, a single motor can simultaneously drive the transmission components, walking wheels, roller brushes, and other components to rotate in the same direction. This results in a simple structure and smoother movement during travel.

[0098] 3. The first transmission component and / or the second transmission component are located inside both sides of the pool cleaning vehicle body and are lower than the bottom of the pool cleaning vehicle. This makes the pool cleaning vehicle more stable when climbing walls and has better performance in climbing slopes and overcoming obstacles.

[0099] 4. The transmission track can be equipped with transmission teeth on both sides to drive the rotation of the roller brush, or the roller brush can be driven to rotate by setting toothed rings on the walking wheels. Its structure is simple and the implementation methods are diversified and user-friendly.

[0100] Obviously, the above embodiments of the present invention are merely examples to clearly illustrate the technical solutions of the present invention, and are not intended to limit the specific implementation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A pool cleaning vehicle with an internal drive unit, characterized in that: The pool cleaning vehicle includes a main body, which is equipped with a filter device inside. The bottom of the main body is equipped with a water inlet connected to the filter device, and the side and / or top of the main body is equipped with a water outlet. A roller brush is provided at the front end of the main body in the direction of travel. During cleaning, the roller brush brings water and debris into the water inlet located at the bottom of the main body. The main body is provided with wheels on both sides, which provide the power for the pool cleaning vehicle to move. The walking wheels include front wheels and rear wheels. A drive motor is installed inside the body of the pool cleaning vehicle. The motor output shaft of the drive motor is connected to the rear wheel and provides power to the rear wheel; or, the motor output shaft of the drive motor is connected to at least one conversion component, and the conversion component is connected to the rear wheel and provides power to the rear wheel. The rear wheel drives the front wheel and the roller brush to rotate simultaneously and in the same direction via the first transmission assembly.

2. The pool cleaning vehicle with an internal drive unit according to claim 1, characterized in that, The conversion component is at least one conversion gear.

3. The pool cleaning vehicle with an internal drive unit according to claim 1, characterized in that, The front wheel includes a front wheel axle fixed to the body and a front wheel hub provided at the end of the front wheel axle. A first rotating shaft gear is provided on the end of the front wheel axle or the inner side of the front wheel hub. The rear wheel includes a rear wheel axle fixed to the body and a rear wheel hub provided at the end of the rear wheel axle. A second rotating shaft gear is provided on the end of the rear wheel axle or the inner side of the rear wheel hub. A drive gear is provided on the output shaft of the motor. The drive gear meshes with the second shaft gear and drives the second shaft gear to rotate. The second shaft gear drives the first shaft gear to rotate through a transmission assembly.

4. The pool cleaning vehicle with an internal drive unit according to any one of claims 1-3, characterized in that, The first transmission component is a transmission track, the outer circumference of which is provided with a first transmission tooth, and the inner circumference of which is provided with a second transmission tooth. The second transmission gear meshes with the first shaft gear and the second shaft gear respectively.

5. The pool cleaning vehicle with an internal drive unit according to any one of claims 1-3, characterized in that, The side end of the roller brush is provided with a roller brush gear.

6. The pool cleaning vehicle with an internal drive unit according to claim 4, characterized in that, The first transmission tooth meshes with the roller brush gear.

7. The pool cleaning vehicle with an internal drive unit according to claim 5, characterized in that, A first toothed ring is provided on the front wheel hub, and the roller brush gear meshes with the first toothed ring.

8. The pool cleaning vehicle with an internal drive unit according to claim 1 or 2, characterized in that, A second toothed ring is provided on the rear wheel hub, and the second toothed ring meshes with the conversion assembly.

9. The pool cleaning vehicle with an internal drive unit according to claim 1, characterized in that, The first transmission component is located on one side of the pool cleaning vehicle body, and drives the front wheel, rear wheel and roller brush on that side to rotate simultaneously and in the same direction.

10. The pool cleaning vehicle with an internal drive unit according to claim 9, characterized in that, It also includes a second transmission assembly, which is located on the other side of the pool cleaning vehicle body and simultaneously drives the front wheel and rear wheel on the other side to rotate in the same direction.

11. The pool cleaning vehicle with an internal drive unit according to claim 10, characterized in that, A tensioning wheel is also provided below the first transmission component and / or the second transmission component. The tensioning wheel is fixed to the body and is used to adjust the tension of the first transmission component and / or the second transmission component. Furthermore, the bottom plane of the first transmission component and / or the second transmission component is lower than the bottom plane of the pool cleaning vehicle body.

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