Crawler belt and swimming pool cleaning robot
By designing a track structure that combines high-tooth and low-tooth internal components, the problem of track misalignment was solved, resulting in more stable operation, higher cleaning efficiency, extended track service life, and enhanced structural strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-03
AI Technical Summary
The existing track design of pool cleaning robots is not stable enough. They are prone to deviating, especially when moving quickly or turning, which can cause the track to detach from the track wheel, interfere with the operation of the cleaning roller, or even damage the track or the main body of the machine.
Design a track structure including a combination of inner high teeth and inner low teeth. The inner high teeth mesh with the track wheel to prevent deviation. A first avoidance belt segment and friction teeth are provided to adapt to uneven wall surfaces, provide stable driving force, and optimize the cooperation between the track and the track wheel.
It improves the operational stability and cleaning efficiency of the pool cleaning robot, extends the service life of the tracks, reduces the risk of jamming and detachment, and enhances the structural strength of the tracks.
Smart Images
Figure CN224075653U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of swimming pool cleaning equipment technology, and in particular to a tracked swimming pool cleaning robot. Background Technology
[0002] In the field of pool cleaning robots, the design of the track is crucial to the robot's stability and cleaning efficiency. Existing pool cleaning robots typically employ a tracked structure to adapt to the complex terrain within pools, such as sloping pool walls, uneven areas on the pool floor, and corners. However, existing tracked designs present some challenges in practical applications.
[0003] First, the existing track and track wheel are not stable enough. Especially when the robot moves quickly or turns, the track often deviates towards the main body of the pool cleaning robot, causing the track to detach from the track wheel. When the track deviates, it will interfere with the cleaning roller on the main body of the robot. While the track interferes with the cleaning work of the cleaning roller, the rolling of the cleaning roller will accelerate the speed at which the track detaches from the track wheel, causing the track and cleaning roller to get stuck, or even damaging the track or the main body of the robot. Utility Model Content
[0004] The main objective of this invention is to propose a tracked swimming pool cleaning robot, which aims to provide a track that can effectively prevent deviation towards the main body of the machine.
[0005] To achieve the above objectives, the present invention proposes a track for a swimming pool cleaning robot. The swimming pool cleaning robot includes a main body and a track assembly. The track assembly includes track wheels and a track, with the track sleeved on the track wheels. The track includes:
[0006] The body includes an inner circumferential surface and an outer circumferential surface that are positioned opposite to each other;
[0007] The first gear portion is disposed on the inner circumferential surface of the belt body and includes inner high teeth and inner low teeth distributed along the width direction of the belt body. The inner high teeth are used to abut against the outer end face of the track wheel and are located on the side of the belt body away from the machine body.
[0008] The friction teeth are provided on the outer peripheral surface, and the outer end face of the belt body is located on the side away from the machine body, and forms a first clearance belt segment with the friction teeth at a distance.
[0009] In one embodiment, the inner end face of the belt body is located on the side close to the machine body, and one end of the friction teeth extends along the width direction of the belt body to the inner end face of the belt body.
[0010] In one embodiment, the length ratio of the first clearance strip segment and the friction teeth in the width direction of the belt body ranges from 0.1 to 0.15.
[0011] In one embodiment, the inner circumferential surface has a second clearance belt segment, a toothed belt segment, and a third clearance belt segment arranged sequentially along the width direction of the belt body. The first gear portion is disposed on the toothed belt segment, and in the width direction of the belt body, the length of the toothed belt segment is greater than the length of the second clearance belt segment, and the length of the second clearance belt segment is greater than the length of the third clearance belt segment.
[0012] In one embodiment, the top surface of the inner short tooth is provided with an arc transition between it and the two side surfaces extending along the width direction of the belt body.
[0013] In one embodiment, the inner spur tooth has an inclined surface that extends obliquely toward the inner circumferential surface of the inner spur tooth in the direction of extension of the belt body, in a direction close to the track wheel.
[0014] In one embodiment, the inner lower tooth has an inclined surface on the side away from the inner higher tooth that extends obliquely toward the inner circumferential surface of the inner lower tooth in a direction close to the track wheel.
[0015] In one embodiment, the inner high teeth and the inner low teeth abut against each other in the width direction of the belt body.
[0016] In one embodiment, the inner circumferential surface of the belt body is further provided with a first boss, and the first gear portion is formed on the first boss.
[0017] In one embodiment, the friction tooth portion includes a plurality of friction teeth that are arranged one-to-one with the inner short teeth, and the vertical cross-sectional shape of the friction teeth is configured as trapezoidal.
[0018] This utility model also proposes a swimming pool cleaning robot, comprising:
[0019] Machine body;
[0020] A track assembly includes track wheels and tracks, with the tracks fitted onto the track wheels.
[0021] In this invention, the height of the inner high teeth is higher than that of the inner low teeth. Utilizing the height difference between the inner high teeth and the inner low teeth, the track can be more stably held on the pool cleaning robot when engaging with the track wheel. When the track is fitted onto the track wheel, the inner low teeth engage with the track wheel, and the inner high teeth abut against the outer end face of the track wheel. Furthermore, the inner high teeth are located on the side furthest from the inside of the pool cleaning robot. This design effectively prevents the track from shifting from the side closest to the machine body during operation due to water resistance or other debris in the pool, thus preventing it from detaching from the track wheel and improving the operational stability of the pool cleaning robot. The first clearance belt segment deforms upon contact with the wall, making the contact between the track and the wall smoother and preventing jamming due to shape mismatch. The first clearance belt segment also disperses the pressure between the track and the wall, reducing excessive local pressure and thus lowering the risk of the track getting stuck. The first clearance section better adapts to uneven wall surfaces, allowing the track to adhere more closely to the wall, thus improving cleaning efficiency. The friction teeth provide stable driving force, ensuring stable track operation during cleaning and enhancing cleaning effectiveness. In other words, the combination of high and low internal teeth optimizes the track structure, thereby optimizing the fit between the track and the track wheels, preventing track slippage and jamming, improving cleaning efficiency and robot stability, and extending track lifespan. Attached Figure Description
[0022] 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, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0023] Figure 1 A schematic diagram of the structure of an embodiment of the track provided by this utility model;
[0024] Figure 2 for Figure 1 A partial side view of the embodiment shown;
[0025] Figure 3 for Figure 1 A partial sectional view of the embodiment shown;
[0026] Figure 4 for Figure 1 Another partial sectional view of the embodiment shown;
[0027] Figure 5 A schematic diagram of the structure of an embodiment of the pool cleaning robot provided by this utility model;
[0028] Figure 6 for Figure 5 A partial cross-sectional view of the embodiment shown.
[0029] Explanation of icon numbers:
[0030] 100. Belt body; 11. Inner peripheral surface; 111. First boss; 112. Second clearance belt segment; 113. Toothed belt segment; 114. Third clearance belt segment; 12. Outer peripheral surface; 121. First clearance belt segment;
[0031] 200. First gear section; 21. High internal gear; 22. Low internal gear;
[0032] 300. Friction teeth; 31. Friction teeth;
[0033] 400. Machine body; 41. Cleaning roller brush;
[0034] 500. Track assembly; 51. Track wheel; 52. Track.
[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0039] This utility model proposes a track.
[0040] Please see Figures 1 to 6 In one embodiment of this utility model, the track is used for a pool cleaning robot. The pool cleaning robot includes a machine body 400 and a track assembly 500. The track assembly 500 includes a track wheel 51 and a track 52. The track 52 is sleeved on the track wheel 51 and includes:
[0041] The body 100 includes an inner peripheral surface 11 and an outer peripheral surface 12 that are disposed opposite to each other;
[0042] The first gear part 200 is provided on the inner peripheral surface 11 of the belt body 100 and includes an inner high tooth 21 and an inner low tooth 22 distributed along the width direction of the belt body 100. The inner high tooth 21 is used to abut against the outer end face of the track wheel 51. The inner high tooth 21 is located on the side of the belt body 100 away from the machine body 400.
[0043] The friction teeth 300 are provided on the outer peripheral surface 12. The outer end face of the belt body 100 is located on the side away from the machine body 400, and forms a first clearance belt segment 121 with the friction teeth 300 at intervals.
[0044] Please see Figure 5 It can be seen that the outer peripheral surface 12 of the track 52 is provided with friction teeth 300 that penetrate the width direction of the track, and the inner peripheral surface 11 of the track 52 is provided with inner short teeth 22 that penetrate the width direction of the track 52. The main body 400 is provided with a cleaning roller brush 41 for cleaning pool debris. It can be seen that when the track 52 deviates in the direction of the main body 400, the pool cleaning robot does not have a structure to prevent the deviation. The track 52 will come into contact with the cleaning roller brush 41 during the deviation and become entangled with the cleaning roller brush 41, thereby causing the track 52 to disengage from the track wheel 51 and become stuck with the cleaning roller brush 41.
[0045] In the technical solution of this utility model, the height of the inner high tooth 21 is set higher than that of the inner low tooth 22. By utilizing the height difference between the inner high tooth 21 and the inner low tooth 22, the track 52 can be more stably held on the pool cleaning robot when it meshes with the track wheel 51. When the track 52 is fitted onto the track wheel 51, the inner low tooth 22 meshes with the track wheel 51, and the inner high tooth 21 abuts against the outer end face of the track wheel 51. Moreover, the inner high tooth 21 is located on the side away from the inside of the pool cleaning robot. This design can effectively prevent the track 52 from shifting from the side closer to the machine body 400 due to water resistance or other debris in the pool during operation, thus preventing it from detaching from the track wheel 51. This helps to improve the operational stability of the pool cleaning robot. The first clearance section 121 deforms upon contact with the wall, making the contact between the track 52 and the wall smoother and preventing jamming due to shape mismatch. The first clearance section 121 also distributes pressure between the track 52 and the wall, reducing excessive local pressure and thus lowering the risk of the track 52 getting stuck. The first clearance section 121 better adapts to uneven wall surfaces, allowing the track 52 to fit more tightly against the wall, thereby improving cleaning efficiency. The friction teeth 300 provide stable driving force, ensuring stable operation of the track 52 during cleaning and improving cleaning effectiveness. In other words, the combination of the high inner teeth 21 and the low inner teeth 22 optimizes the structure of the track 52, thereby optimizing the fit between the track 52 and the track wheel 51, preventing the track 52 from falling off or getting stuck, improving cleaning efficiency and robot stability, and extending the service life of the track 52.
[0046] In one embodiment, the inner end face of the belt body 100 is located on the side closer to the machine body 400, and one end of the friction teeth 300 extends along the width direction of the belt body 100 to the inner end face of the belt body 100. This increases the area on the outer peripheral surface 12 of the track 52 that can rub against the ground, enhances the grip of the track 52, and prevents the track 52 from slipping when driving the machine body 400. In other embodiments, one end of the friction teeth 300 may have another clearance section with the inner end face of the belt body 100.
[0047] In one embodiment, the length ratio of the first clearance strip segment 121 to the friction teeth 300 in the width direction of the belt body 100 ranges from 0.1 to 0.15. That is, the belt body 100 provides sufficient deformation space, allowing the track 52 to adapt flexibly when contacting the wall, improving cleaning efficiency while reducing the possibility of jamming. It also provides stable driving force, ensuring stable operation of the track 52 during the cleaning process of the pool cleaning robot, thus improving cleaning effectiveness. Furthermore, the first clearance strip segment 121 can reduce direct friction between the track 52 and the wall, thereby reducing wear on the track 52, extending its service life, providing a certain buffering effect, reducing the impact force when the track 52 contacts the wall, and thus improving the structural strength of the track 52.
[0048] In one embodiment, the inner circumferential surface 11 has a second clearance belt segment 112, a toothed belt segment 113, and a third clearance belt segment 114 arranged sequentially along the width direction of the belt body 100. The first gear portion 200 is disposed on the toothed belt segment 113. In the width direction of the belt body 100, the length of the toothed belt segment 113 is greater than the length of the second clearance belt segment 112, and the length of the second clearance belt segment 112 is greater than the length of the third clearance belt segment 114. The second clearance belt segment 112 is disposed corresponding to the first clearance belt segment 121. Its larger length allows the first clearance belt segment to have a larger deformation range to better adapt to the unevenness of the wall surface, so that the track 52 can fit more tightly against the wall surface, thereby improving cleaning efficiency. The first clearance belt segment 121 can also reduce the direct friction between the track 52 and the wall surface, thereby reducing the wear of the track 52 and extending the service life of the track 52. The toothed belt segment 113 and the third clearance belt segment 114 are provided corresponding to the friction teeth 300. The toothed belt segment 113 corresponds to more portions of the friction teeth 300, effectively enhancing the stability of the track 52's movement. Understandably, the surfaces of the second clearance belt segment 112 and the third clearance belt segment 114 are smooth, with only the toothed belt segment 113 having internal high teeth 21 and internal low teeth. This means that only the toothed belt segment 113 concentrates the driving torque transmitted from the track wheel 51, reducing the load on other areas, thereby reducing overall wear and reducing the material required to produce the track 52, thus lowering production costs. In other embodiments, the third clearance belt segment 114 may not be provided.
[0049] In one embodiment, the top surface of the inner low teeth 22 is provided with an arc transition between it and the two side surfaces extending along the width direction of the belt body 100. When the matching accuracy between the track 52 and the track wheel 51 is low, the teeth on the track wheel 51 will abut against the arc transition to slide and guide the tooth protrusions on the track wheel 51 between the two inner low teeth 22. This avoids the track 52 from falling off due to low matching accuracy between the track wheel 51 and the track 52. By optimizing the structure of the inner low teeth 22, the cooperation between the track 52 and the track wheel 51 is optimized, preventing the track 52 from falling off, improving cleaning efficiency and robot stability.
[0050] In one embodiment, the inner tooth 22 has an inclined surface extending towards the inner circumferential surface 11 of the inner tooth 22 in the direction of extension of the track body 100, near the track wheel 51. When the track 52 deviates from the track wheel 51, the inclined surface contacts the track wheel 51. Since the inclined direction of the inclined surface extends towards the inner circumferential surface 11 of the inner tooth 22, this contact forces a lateral force between the inclined surface and the track wheel. The direction of this lateral force is opposite to the direction of deviation of the track 52, thereby applying a corrective lateral pressure to the track 52. This lateral pressure pushes the track 52 towards the inner circumferential surface 11, gradually returning it to the correct operating position, so that the track 52 can automatically correct deviation during operation without additional mechanical devices or human intervention. By reducing the frequency and amplitude of track 52 deviation, the system operating stability of the track 52 is improved. In other embodiments, the inclined surface extending towards the inner circumferential surface 11 of the inner tooth 22 in the direction near the track wheel 51 may not be provided.
[0051] In one embodiment, the inner lower tooth 22 has a slope extending obliquely towards the inner circumferential surface 11 of the inner lower tooth 22 in a direction close to the track wheel 51 on the side away from the inner higher tooth 21. This reduces the direct contact area between the inner lower tooth 22 and the track wheel 51, thereby reducing friction, helping to reduce tooth surface wear, and extending the service life of the track 52. Furthermore, when adding lubricant between the track wheel 51 and the first gear portion 200, the lubricant can be guided to flow towards the tooth surface, ensuring uniform lubrication and improving lubrication effectiveness. The oblique design on the periphery of the inner lower tooth 22 reduces the amount of material used in the inner lower tooth 22, thereby reducing the weight of the track 52. In other embodiments, the inner lower tooth 22 may not have a slope on the side away from the inner higher tooth 21.
[0052] In one embodiment, the inner high teeth 21 and the inner low teeth 22 abut against each other in the width direction of the track body 100. This increases the overall rigidity of the track 52 and reduces lateral deviation and swaying of the track 52 during operation. This design helps improve the operational stability of the track 52. Furthermore, the abutment between the inner high teeth 21 and the inner low teeth 22 provides additional support, enhancing the compressive strength of the track 52. In other embodiments, the inner high teeth 21 and the inner low teeth 22 may not abut against each other.
[0053] In one embodiment, the inner circumferential surface 11 of the belt body 100 is further provided with a first boss 111, and the first gear portion 200 is formed on the first boss 111. The provision of the first boss 111 can enhance the structural strength of the belt body 100, especially in the root region of the inner high tooth 21 and inner low tooth 22. The boss can disperse stress and reduce the risk of fracture due to local stress concentration. The boss can provide additional support and enhance the compressive strength of the teeth. By enhancing the structural strength of the belt body 100, the frequency of track 52 deviating during operation is reduced, and reliability is improved. During the manufacturing process of the belt body 100, the first boss 111 can provide a stable forming base, ensure the manufacturing accuracy of the teeth, improve the overall quality of the track 52, and reduce performance problems caused by manufacturing errors. In other embodiments, the first boss 111 may not be provided.
[0054] In one embodiment, the track 52 further includes friction teeth 300, which are disposed on the outer peripheral surface 12 of the track body 100 and include a plurality of friction teeth 31 corresponding one-to-one with the inner short teeth 22. The vertical cross-sectional shape of the friction teeth 31 is configured as trapezoidal. By enhancing the friction between the track 52 and the ground, the pool cleaning robot can move on the bottom wall of a pool covered with biofilm or algae without slipping. The trapezoidal design of the friction teeth 31 provides better structural strength, making the track 52 more stable under high loads. The trapezoidal design can increase the strength of the tooth root, reduce the risk of tooth root breakage due to excessive load, and increase the contact area between the tooth surface and the ground, thereby reducing the pressure per unit area and reducing the wear rate. In other embodiments, the vertical cross-sectional shape of the friction teeth 31 may be configured with other patterns.
[0055] This utility model also proposes a swimming pool cleaning robot, which includes a main body 400 and a track assembly 500. The track assembly 500 includes track wheels 51 and tracks 52. The specific structure of the tracks 52 is as described in the above embodiments. Since this swimming pool cleaning robot adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The bottom of the main body 400 is provided with track wheels 51, and the tracks 52 are sleeved on the track wheels 51. The track wheels 51 can drive the tracks 52 to rotate, thereby driving the movement of the main body 400 through the rotation of the tracks 52.
[0056] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A track for a pool cleaning robot, the pool cleaning robot comprising a machine body and a track assembly, the track assembly comprising track wheels and a track, the track being sleeved on the track wheels, characterized in that, The track includes: The body includes an inner circumferential surface and an outer circumferential surface that are positioned opposite to each other; The first gear portion is disposed on the inner circumferential surface of the belt body and includes inner high teeth and inner low teeth distributed along the width direction of the belt body. The inner high teeth are used to abut against the outer end face of the track wheel and are located on the side of the belt body away from the machine body. The friction teeth are provided on the outer peripheral surface, and the outer end face of the belt body is located on the side away from the machine body, and forms a first clearance belt segment with the friction teeth at a distance.
2. The track as described in claim 1, characterized in that, The inner end face of the belt body is located on the side close to the machine body, and one end of the friction teeth extends along the width direction of the belt body to the inner end face of the belt body.
3. The track as described in claim 2, characterized in that, The length ratio of the first clearance strip segment and the friction teeth in the width direction of the belt body ranges from 0.1 to 0.
15.
4. The track as described in claim 1, characterized in that, The inner circumferential surface has a second clearance belt segment, a toothed belt segment, and a third clearance belt segment arranged sequentially along the width direction of the belt body. The first gear portion is provided on the toothed belt segment, and in the width direction of the belt body, the length of the toothed belt segment is greater than the length of the second clearance belt segment, and the length of the second clearance belt segment is greater than the length of the third clearance belt segment.
5. The track as described in claim 1, characterized in that, The top surface of the inner short tooth is arranged in an arc transition with the two side surfaces extending along the width direction of the belt body.
6. The track as described in claim 1, characterized in that, The inner spur tooth has an inclined surface that extends obliquely toward the inner circumferential surface of the inner spur tooth in the direction of extension of the belt body, in the direction close to the track wheel.
7. The track as described in claim 6, characterized in that, The inner short tooth has an inclined surface that extends obliquely toward the inner circumferential surface of the inner short tooth in a direction close to the track wheel on the side away from the inner high tooth.
8. The track as described in claim 1, characterized in that, The inner high teeth and the inner low teeth abut against each other in the width direction of the belt body; And / or, the inner circumferential surface of the belt body is further provided with a first boss, and the first gear portion is formed on the first boss.
9. The track as described in claim 1, characterized in that, The friction tooth section includes a plurality of friction teeth that are arranged one-to-one with the inner short teeth, and the vertical cross-sectional shape of the friction teeth is configured as trapezoidal.
10. A swimming pool cleaning robot, characterized in that, include: Machine body; A track assembly, comprising a track wheel and a track as described in any one of claims 1 to 9, the track being fitted onto the track wheel.