Rolling brush transmission structure and swimming pool cleaning robot

Abstract

The application relates to the technical field of cleaning robots, in particular to a rolling brush transmission structure and a pool cleaning robot, which comprises a track wheel, a transition gear set, a motor gear and a rolling brush gear. The middle part of the transition gear set is provided with a fixed shaft, the track wheel and the transition gear set are respectively detachably connected to the fixed shaft and coaxially rotate around the fixed shaft, the motor gear and the rolling brush gear are engaged with the transition gear set, and the track wheel is engaged with the motor gear or the rolling brush gear. Compared with the prior art, the transition gear set is integrated in the track wheel and coaxially rotates around the same fixed shaft, power loss points caused by additional transmission links are reduced, the motor gear and the rolling brush gear can be flexibly selected to engage, the rationality of a transmission chain is optimized, and the problem of large transmission loss in the prior art is effectively solved.

Description

Technical Field

[0001] This application relates to the field of cleaning robot technology, and in particular to a roller brush transmission structure and a pool cleaning robot. Background Technology

[0002] The roller brush drive structure is a core component in the pool cleaning robot that connects the power source, the track walking mechanism, and the roller brush cleaning mechanism. Its core function is to achieve efficient power transmission, drive the robot to complete the coordinated operation of movement and pool dirt cleaning, and is a key part to ensure the normal operation of the pool cleaning robot.

[0003] In existing technologies, the roller brush transmission structure of pool cleaning robots usually uses multiple sets of gears to construct a transmission link. After the power is output from the motor, it is transmitted to the track and roller brush in sequence through gear meshing. In some designs, the transmission systems of the two track sides are independent of each other, or the gear layout does not form a precise synchronous transmission mechanism, and power transmission is achieved by simply relying on meshing relationships.

[0004] The existing roller brush transmission structure has an unreasonable transmission link design and lacks an effective power loss control and synchronization adjustment mechanism, resulting in large power loss during transmission. Furthermore, the difference in transmission loss between the two sides of the track causes inconsistent walking speeds, which ultimately makes the pool cleaning robot prone to deviating from the preset walking path during operation, affecting the accuracy and coverage of the cleaning operation. Utility Model Content

[0005] This application provides a roller brush transmission structure and a pool cleaning robot to solve the technical problem that the transmission link design of the existing roller brush transmission structure is not reasonable, resulting in large power loss during the transmission process.

[0006] In a first aspect, this application proposes a roller brush transmission structure, including: a track wheel, a transition gear set, a motor gear, and a roller brush gear;

[0007] The transition gear set has a fixed shaft in the middle. The track wheel and the transition gear set are detachably connected to the fixed shaft and rotate coaxially around the fixed shaft.

[0008] Both the motor gear and the roller brush gear mesh with the transition gear set, and the track wheel meshes with either the motor gear or the roller brush gear.

[0009] Furthermore, the transition gear set includes a first transmission gear and a second transmission gear, the first transmission gear being fixedly connected to the second transmission gear and rotating coaxially around the fixed shaft.

[0010] Furthermore, one side of the motor gear meshes with the internal gear ring of the track wheel, and the other side meshes with the first transmission gear, while the roller brush gear meshes with the second transmission gear.

[0011] Furthermore, the first transmission gear has a plurality of fixing blocks around its circumference on the side facing the second transmission gear, and the surface of the second transmission gear has a plurality of mounting holes. The number and position of the fixing blocks correspond to the mounting holes, and the fixing blocks are inserted into the mounting holes.

[0012] Furthermore, a motor is provided on one side of the motor gear, and the motor gear is rotatably mounted on the output shaft of the motor. A roller brush is provided on one side of the roller brush gear, and a rotating shaft is provided at the center of the roller brush. The roller brush gear is rotatably mounted on the rotating shaft.

[0013] Furthermore, elastic retaining rings are provided between the first transmission gear, the second transmission gear and the fixed shaft, as well as on the rotating shaft of the roller brush gear.

[0014] Furthermore, the motor gear meshes with the second transmission gear, one side of the roller brush gear meshes with the internal gear ring of the track wheel, and the other side meshes with the first transmission gear.

[0015] Furthermore, the track wheel is provided with a track, which meshes with the outer toothed ring of the track wheel.

[0016] Secondly, this application also proposes a pool cleaning robot, including a robot body and a roller brush transmission structure as described in the first aspect, wherein the roller brush transmission structure is disposed on one side of the robot body.

[0017] Furthermore, on the other side of the robot body, there is a roller brush driven wheel, a driven transition wheel, and a driven track wheel. One side of the roller brush driven wheel meshes with the internal gear ring of the driven track wheel, and the other side meshes with one side of the driven transition wheel. The other side of the driven transition wheel meshes with the internal gear ring of the driven track wheel.

[0018] The technical solutions provided in this application have the following advantages compared with the prior art:

[0019] This application integrates the transition gear set into the track wheel and rotates coaxially with the track wheel around the same fixed axis, reducing power loss points caused by additional transmission links. At the same time, the motor gear and the roller brush gear can flexibly choose the meshing method, optimizing the rationality of the transmission link and effectively solving the problem of large transmission losses in the prior art. As a core coordinating component, the transition gear set enables precise distribution and synchronous transmission of power between the track wheel and the roller brush, avoiding the power distribution imbalance caused by independent transmission of the two tracks on both sides and the lack of a unified coordinating component in the prior art. Furthermore, the coaxial rotation design ensures that the rotation rhythm of the track wheel and the transition gear set is completely synchronized. When the power is transmitted through the transition gear set, the consistency of power input on both tracks is guaranteed, fundamentally avoiding the speed inconsistency problem caused by differences in transmission paths and uneven losses. This prevents the pool cleaning robot from deviating from the preset walking path during operation, and ultimately ensures the accuracy and coverage of the cleaning operation while improving transmission efficiency. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] To more clearly illustrate the technical solutions in the embodiments of this application 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.

[0022] 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.

[0023] Figure 1 This is a schematic diagram of a roller brush transmission structure provided in an embodiment of this application;

[0024] Figure 2 for Figure 1 Exploded view;

[0025] Figure 3 for Figure 1 A structural schematic diagram of the assembled transmission components;

[0026] Figure 4 This is a schematic diagram of the structure of a pool cleaning robot provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Track wheel; 2. Transition gear set; 21. First transmission gear; 211. Fixing block; 22. Second transmission gear; 221. Mounting hole; 3. Fixed shaft; 4. Motor gear; 41. Motor; 5. Brush gear; 51. Brush; 52. Rotating shaft; 6. Elastic retaining ring; 7. Track;

[0029] 10. Roller brush drive structure; 20. Robot body. Detailed Implementation

[0030] 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.

[0031] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. 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 this application. 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.

[0032] For ease of description, spatial relative terms may be used in the text to describe the relative positional relationship 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 movement change, 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.

[0033] To address the technical problem of excessive power loss during transmission caused by the unreasonable design of the transmission link in the existing roller brush drive structure, this application integrates the transition gear set 2 into the track wheel 1 and rotates coaxially with the track wheel 1 around the same fixed shaft 3, reducing the power loss points caused by additional transmission links. At the same time, the motor gear 4 and the roller brush gear 5 can flexibly choose the meshing method, optimizing the rationality of the transmission link and effectively solving the problem of high transmission loss in the prior art.

[0034] Please see Figures 1 to 3 This application proposes a roller brush transmission structure and a swimming pool cleaning robot, including: a track wheel 1, a transition gear set 2, a motor gear 4, and a roller brush gear 5; a fixed shaft 3 is provided in the middle of the transition gear set 2, and the track wheel 1 and the transition gear set 2 are detachably connected to the fixed shaft 3 and rotate coaxially around the fixed shaft 3; the motor gear 4 and the roller brush gear 5 are both meshed with the transition gear set 2, and the track wheel 1 meshes with the motor gear 4 or the roller brush gear 5.

[0035] Specifically, the transition gear set 2 is installed inside the track wheel 1, and the fixed shaft 3 passes through the middle of the transition gear set 2. The track wheel 1 and the transition gear set 2 are respectively installed on the fixed shaft 3 through a detachable structure, so that the two can rotate coaxially around the fixed shaft 3.

[0036] The transmission meshing combination has two specific implementation forms: In the first form, the teeth of the motor gear 4 mesh simultaneously with the meshing tooth surface of the track wheel 1 and the input end gear of the transition gear set 2, while the teeth of the roller brush gear 5 mesh only with the output end gear of the transition gear set 2. During power transmission, the motor 41 drives the motor gear 4 to rotate, and the motor gear 4 synchronously drives the track wheel 1 and the transition gear set 2 to rotate. The track wheel 1 directly receives power to achieve the walking action, and the transition gear set 2 further transmits the received power to the roller brush gear 5, driving the roller brush 51 to carry out cleaning operations, forming a linkage transmission path of "motor gear 4 → track wheel 1 + transition gear set 2 → roller brush gear 5".

[0037] In the second configuration, the teeth of the motor gear 4 mesh only with the input gear of the transition gear set 2, while the teeth of the brush gear 5 mesh simultaneously with the meshing tooth surface of the track wheel 1 and the output gear of the transition gear set 2. During power transmission, the motor 41 drives the motor gear 4 to rotate. The motor gear 4 first drives the transition gear set 2, which in turn meshes directly with the brush gear 5, transmitting power to the brush 51. Simultaneously, it transmits power to the track wheel 1 through the brush gear 5, driving the track wheel 1 to move, forming a centralized distribution transmission path of "motor gear 4 → transition gear set 2 → brush gear 5 + track wheel 1". Both meshing combinations can be flexibly selected according to actual usage requirements, and the gear meshing points maintain a suitable meshing state, ensuring the continuity of power transmission.

[0038] This application significantly reduces the additional friction loss caused by the dispersed arrangement of transmission components by integrating the transition gear set 2 and the track wheel 1 with a coaxial rotation design, thereby improving power transmission efficiency. The flexible meshing combination method can adapt to the power requirements in different scenarios, ensuring transmission adaptability. The detachable connection structure facilitates the disassembly, maintenance and replacement of components. The overall transmission link is simple and compact, reducing transmission deviation and ensuring the synchronization and stability of the operation of the track wheel 1 and the roller brush 51, effectively improving the reliability and practicality of the overall transmission system.

[0039] like Figure 2-3 As shown, the transition gear set 2 includes a first transmission gear 21 and a second transmission gear 22. The first transmission gear 21 and the second transmission gear 22 are fixedly connected and rotate coaxially around the fixed shaft 3.

[0040] Specifically, the transition gear set 2 consists of a first transmission gear 21 and a second transmission gear 22. The first transmission gear 21 and the second transmission gear 22 are fixedly connected (e.g., by key connection, welding, or integral molding) to form a stable linkage structure. After installation, the transition gear set 2 is mounted on a fixed shaft 3, ensuring that both the first transmission gear 21 and the second transmission gear 22 can rotate synchronously and coaxially around the fixed shaft 3, and that their relative positions remain unchanged during rotation, ensuring the continuity of power transmission. After assembly, the first transmission gear 21 and the second transmission gear 22 can serve as power input or output ends, respectively, and mesh with the motor gear 4 and the roller brush gear 5 according to transmission requirements to achieve power transmission and distribution. This structure simplifies the structure of the transition gear set 2 through the fixed connection and coaxial rotation design of the two gears, ensures the synchronicity and stability of power transmission, reduces transmission deviation and loss, and improves overall transmission efficiency.

[0041] like Figure 1-2 As shown, one side of the motor gear 4 meshes with the internal gear ring of the track wheel 1, and the other side meshes with the first transmission gear 21. The roller brush gear 5 meshes with the second transmission gear 22.

[0042] Specifically, the motor gear 4 is positioned between the track wheel 1 and the transition gear set 2, ensuring precise meshing of one side of its teeth with the inner gear ring of the track wheel 1, and the other side meshing with the first transmission gear 21 in the transition gear set 2, forming a double meshing relationship of "motor gear 4 - track wheel 1" and "motor gear 4 - first transmission gear 21". Simultaneously, the roller brush gear 5 is positioned on one side of the transition gear set 2, ensuring complete meshing of its teeth with the second transmission gear 22 in the transition gear set 2, thus constructing a complete transmission chain. During assembly, it is ensured that the meshing surfaces of all gears are tightly fitted without loosening or misalignment. During power transmission, the motor 41 drives the motor gear 4 to rotate, which in turn drives the track wheel 1 to rotate and the first transmission gear 21 to operate. The first transmission gear 21, through a fixed connection, drives the second transmission gear 22 to rotate synchronously, thereby driving the roller brush gear 5 to operate, achieving sequential power transmission.

[0043] like Figure 2 As shown, the first transmission gear 21 has several fixing blocks 211 around its side facing the second transmission gear 22, and the surface of the second transmission gear 22 has several mounting holes 221. The number and position of the fixing blocks 211 correspond to the mounting holes 221, and the fixing blocks 211 are inserted into the mounting holes 221.

[0044] Specifically, on the end face of the first transmission gear 21 facing the second transmission gear 22, a plurality of fixing blocks 211 are evenly arranged circumferentially. The shape and size of the fixing blocks 211 are adapted to the specifications of the mounting holes 221. On the corresponding surface of the second transmission gear 22, a plurality of mounting holes 221 are drilled through to ensure that the number and position of the mounting holes 221 correspond one-to-one with the fixing blocks 211. During installation, the fixing blocks 211 of the first transmission gear 21 are aligned with the mounting holes 221 of the second transmission gear 22 and inserted axially so that the fixing blocks 211 are fully inserted into the mounting holes 221, achieving a stable connection between the two. After connection, the first transmission gear 21 and the second transmission gear 22 form a synchronous linkage structure, which can rotate coaxially around the fixed shaft 3, ensuring that there is no relative displacement between the two during power transmission. Through the insertion and cooperation of the fixing blocks 211 and the mounting holes 221, the two gears are quickly and accurately assembled, the connection is stable and the transmission synchronization is strong, reducing transmission gaps and deviations, and reducing power loss.

[0045] like Figure 3 As shown, a motor 41 is provided on one side of the motor gear 4, and the motor gear 4 is rotatably mounted on the output shaft of the motor 41. A roller brush 51 is provided on one side of the roller brush gear 5, and a rotating shaft 52 is provided at the center of the roller brush 51. The roller brush gear 5 is rotatably mounted on the rotating shaft 52.

[0046] Specifically, a motor 41 is mounted on one side of the motor gear 4, and the motor gear 4 is rotatably mounted on the output shaft of the motor 41, ensuring that the motor gear 4 can rotate synchronously after the motor 41 starts. A roller brush 51 is set on one side of the roller brush gear 5, and a rotating shaft 52 is mounted at the center of the roller brush 51. The roller brush gear 5 is rotatably mounted on the rotating shaft 52, so that the roller brush gear 5 can drive the rotating shaft 52 and the roller brush 51 to rotate together. During the installation process, the fit clearance between the motor gear 4 and the output shaft, and between the roller brush gear 5 and the rotating shaft 52 is reasonable, and the rotation is smooth without jamming, ensuring that the power can be transmitted from the motor 41 through the motor gear 4 and the transmission assembly to the roller brush gear 5, and finally drive the roller brush 51 to rotate.

[0047] like Figure 2-3 As shown, elastic retaining rings 6 are provided between the first transmission gear 21, the second transmission gear 22 and the fixed shaft 3, as well as on the rotating shaft 52 of the roller brush gear 5.

[0048] Specifically, elastic retaining rings 6 of appropriate specifications are embedded at the mating points of the first transmission gear 21 and the fixed shaft 3, and at the mating points of the second transmission gear 22 and the fixed shaft 3, respectively. Axial positioning is achieved through the elastic deformation of the retaining rings 6, preventing the gears from axially shifting along the fixed shaft 3. Simultaneously, elastic retaining rings 6 are also installed at corresponding positions on the rotating shaft 52 of the roller brush gear 5 to axially limit the roller brush gear 5. During assembly, it is ensured that the elastic retaining rings 6 are fully engaged in the preset slots, tightly fitting against the gear end face, without affecting the normal rotation of the gear around the shaft, only serving to limit axial displacement. Precise axial positioning is achieved through the elastic retaining rings 6, preventing shifting during gear transmission, ensuring meshing stability, reducing transmission deviation and wear, and improving the reliability of the transmission system.

[0049] In another embodiment, the motor gear 4 meshes with the second transmission gear 22, and one side of the roller brush gear 5 meshes with the internal gear ring of the track wheel 1, while the other side meshes with the first transmission gear 21.

[0050] Specifically, in another embodiment, the motor gear 4 is arranged on one side of the transition gear set 2, so that its teeth precisely mesh with the second transmission gear 22 in the transition gear set 2; the roller brush gear 5 is arranged between the track wheel 1 and the transition gear set 2, so that one side of the roller brush gear 5 meshes with the internal gear ring on the inner side of the track wheel 1, and the other side meshes with the first transmission gear 21 in the transition gear set 2, thus constructing a complete transmission link. During power transmission, the motor 41 drives the motor gear 4 to rotate, the motor gear 4 drives the second transmission gear 22 to rotate, the second transmission gear 22 and the first transmission gear 21 are synchronously linked, thereby driving the roller brush gear 5 to rotate, and the roller brush gear 5 simultaneously drives the track wheel 1 to rotate, realizing the orderly transmission of power.

[0051] like Figure 1As shown, a track 7 is provided on the outside of the track wheel 1, and the track 7 meshes with the outer toothed ring of the track wheel 1.

[0052] Specifically, the track 7 is arranged around the outside of the track wheel 1, ensuring that the meshing structure on the inner side of the track 7 is precisely aligned with the outer toothed ring of the track wheel 1. The meshing of the teeth achieves the engagement between the track 7 and the track wheel 1. During installation, ensure that the track 7 has appropriate tension and fits tightly against the outer toothed ring of the track wheel 1 without slippage or loosening. When the track wheel 1 rotates, its outer toothed ring drives the track 7 to rotate synchronously through the meshing action, achieving effective power transmission from the track wheel 1 to the track 7. The meshing structure is stable, power transmission is direct and efficient, avoiding slippage and deviation during transmission, ensuring the stability and continuity of track 7 operation, and improving overall transmission reliability.

[0053] Please see Figure 4 This application also proposes a pool cleaning robot, including a robot body 20 and a roller brush transmission structure 10 as described in the above embodiment, wherein the roller brush transmission structure 10 is disposed on one side of the robot body 20.

[0054] Specifically, the roller brush drive structure 10 is integrally installed on one side of the main body 20 of the pool cleaning robot. Through bolt fastening, snap-fit ​​connections, and other suitable installation methods, the roller brush drive structure 10 and the robot main body 20 form a stable connection, ensuring no loosening or displacement of the structure after assembly. The track wheels 1 of the roller brush drive structure 10 correspond to the robot's walking adaptation parts, and the roller brush 51 corresponds to the robot's cleaning operation area. The installation positions of the motor 41, gears, and other transmission components do not interfere with other functional components of the robot main body 20, ensuring the overall structural coordination. This structure is easy to assemble and has a reasonable layout. The roller brush drive structure 10 enables coordinated robot walking and cleaning operations, improving the robot's operational stability and cleaning reliability.

[0055] In an optional embodiment, the other side of the robot body 20 is provided with a roller brush driven wheel, a driven transition wheel and a driven track wheel. One side of the roller brush driven wheel meshes with the internal gear ring of the driven track wheel, and the other side meshes with one side of the driven transition wheel. The other side of the driven transition wheel meshes with the internal gear ring of the driven track wheel.

[0056] Specifically, on the other side of the robot body 20, a driven roller wheel, a driven transition wheel, and a driven track wheel are arranged sequentially to ensure that the positions of each component are adapted to form a transmission connection. One side of the driven roller wheel's teeth precisely meshes with the internal gear ring on the inner side of the driven track wheel, while the other side's teeth mesh with one side of the driven transition wheel. Simultaneously, the other side of the driven transition wheel's teeth meshes with the internal gear ring of the driven track wheel, constructing a complete driven transmission link. The driven transmission structure has a compact layout and stable meshing, ensuring the coordination between the robot's movement on the other side and the driven cleaning action, thus improving overall operational stability.

[0057] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0058] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0063] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0064] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A roller brush drive structure, characterized in that, include: Track wheels, transition gear sets, motor gears, and roller brush gears; The transition gear set has a fixed shaft in the middle. The track wheel and the transition gear set are detachably connected to the fixed shaft and rotate coaxially around the fixed shaft. Both the motor gear and the roller brush gear mesh with the transition gear set, and the track wheel meshes with either the motor gear or the roller brush gear.

2. The roller brush transmission structure according to claim 1, characterized in that, The transition gear set includes a first transmission gear and a second transmission gear, the first transmission gear and the second transmission gear are fixedly connected and rotate coaxially around the fixed shaft.

3. The roller brush transmission structure according to claim 2, characterized in that, One side of the motor gear meshes with the internal gear ring of the track wheel, and the other side meshes with the first transmission gear. The roller brush gear meshes with the second transmission gear.

4. The roller brush transmission structure according to claim 3, characterized in that, The first transmission gear has several fixing blocks around its circumference on the side facing the second transmission gear, and the surface of the second transmission gear has several mounting holes. The number and position of the fixing blocks correspond to the mounting holes, and the fixing blocks are inserted into the mounting holes.

5. The roller brush transmission structure according to claim 2, characterized in that, A motor is provided on one side of the motor gear, and the motor gear is rotatably mounted on the output shaft of the motor. A roller brush is provided on one side of the roller brush gear, and a rotating shaft is provided at the center of the roller brush. The roller brush gear is rotatably mounted on the rotating shaft.

6. The roller brush transmission structure according to claim 5, characterized in that, Elastic retaining rings are provided between the first transmission gear, the second transmission gear and the fixed shaft, as well as on the rotating shaft of the roller brush gear.

7. The roller brush transmission structure according to claim 2, characterized in that, The motor gear meshes with the second transmission gear, and one side of the roller brush gear meshes with the internal gear ring of the track wheel, while the other side meshes with the first transmission gear.

8. The roller brush transmission structure according to claim 1, characterized in that, The track wheel is provided with a track, which meshes with the outer toothed ring of the track wheel.

9. A swimming pool cleaning robot, characterized in that, It includes a robot body and a roller brush transmission structure as described in any one of claims 1-8, wherein the roller brush transmission structure is disposed on one side of the robot body.

10. The pool cleaning robot according to claim 9, characterized in that, On the other side of the robot body, there is a driven roller, a driven transition roller, and a driven track roller. One side of the driven roller meshes with the internal gear ring of the driven track roller, and the other side meshes with one side of the driven transition roller. The other side of the driven transition roller meshes with the internal gear ring of the driven track roller.

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