Transmission mechanism and underwater cleaning robot

Abstract

A transmission mechanism (40) comprises a gear combination structure and a sealing shell (430), and at least part of the gear combination structure is arranged in the sealing shell. When the transmission mechanism is in a mounting state of being mounted on the underwater cleaning robot (1); a first output rotating shaft (411) of the gear combination structure penetrates through the sealing shell and is connected with a driving wheel (210) of the underwater cleaning robot; a second output rotating shaft (421) of a gear combination structure penetrates through the sealing shell to be connected with a rolling brush body (310) of the underwater cleaning robot. Through gear transmission of a gear combination structure arranged in the sealing shell, when the driving wheel is driven, the rolling brush body is driven to rotate relative to a cleaning body (10) of the underwater cleaning robot. The utility model further discloses an underwater cleaning robot comprising the transmission mechanism. The transmission mechanism can prevent solid pollutants such as silt and leaves from entering the gear combination structure through the sealing shell, so that gears in the gear combination structure are prevented from being clamped, and normal transmission of the gear combination structure is guaranteed.

Description

[0001] This application claims priority to the U.S. application filed on September 1, 2022, with application number "US17 / 901,742" and invention name "ROBOTIC POOL CLEANER", the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of cleaning devices, and in particular to a transmission mechanism and an underwater cleaning robot. Background Art

[0003] The underwater cleaning robot is a cleaning robot developed for underwater cleaning needs. It can clean the underwater part of structures and filter water. Taking swimming pool cleaning as an example, during the working process, the underwater cleaning robot drives the transmission mechanism through the drive motor to drive the underwater cleaning robot to move on the surface of the swimming pool, and cleans the pollutants on the surface of the swimming pool by rolling the roller brush on the surface of the swimming pool.

[0004] The existing driving method of the roller brush and the moving mechanism of the underwater cleaning robot is usually achieved by utilizing the internal meshing of the corresponding gears in the transmission mechanism. This driving method requires high processing precision, and during use, the movement efficiency of the underwater cleaning robot is low, and solid pollutants such as mud and leaves are easily stuck between the gears, making the gears difficult to rotate and easily increasing the wear of the gears, thereby increasing the use cost of the underwater cleaning robot. Utility Model Content

[0005] In order to solve the above problems, an embodiment of the present application provides a transmission mechanism to at least partially solve the above problems.

[0006] A first aspect of an embodiment of the present application provides a transmission mechanism for an underwater cleaning robot, wherein the transmission mechanism comprises a gear assembly structure and a sealing shell, and at least a portion of the gear assembly structure is disposed in the sealing shell; when the transmission mechanism is in an installation state mounted on the underwater cleaning robot:

[0007] The first output shaft of the gear combination structure passes through the sealing shell and is connected to the driving wheel of the underwater cleaning robot; the second output shaft of the gear combination structure passes through the sealing shell and is connected to the roller brush body of the underwater cleaning robot; through the gear transmission of the gear combination structure placed in the sealing shell, when the driving wheel is driven, the roller brush body is driven to rotate relative to the cleaning body of the underwater cleaning robot.

[0008] In some embodiments of the present application, the gear combination structure includes a first outer gear ring and a roller brush gear; the first outer gear ring and the roller brush gear are arranged in the sealing shell, and the first outer gear ring is meshed with the outside of the roller brush gear; the first output shaft is the shaft of the first outer gear ring, and the second output shaft is the shaft of the roller brush gear; when the transmission mechanism is in an installed state on the underwater cleaning robot and the first outer gear ring rotates, the first outer gear ring drives the driving wheel to rotate through the first output shaft; the roller brush gear is driven by the first outer gear ring to drive the roller brush body to rotate relative to the cleaning body of the underwater cleaning robot.

[0009] In some embodiments of the present application, a first opening and a second opening are provided on the sealing shell, the first output shaft is connected to the driving wheel through the first opening, and the second output shaft is connected to the roller brush body through the second opening.

[0010] In some embodiments of the present application, a first sealing structure is arranged between the first outer gear ring and the first opening, and the first opening is dynamically sealed by the first sealing structure; and / or, a second sealing structure is arranged between the roller brush gear and the second opening, and the second opening is dynamically sealed by the second sealing structure.

[0011] In some embodiments of the present application, the first sealing structure includes a first oil seal ring, which is sleeved on the first output shaft; and / or the second sealing structure includes a second oil seal ring, which is sleeved on the second output shaft.

[0012] In some embodiments of the present application, the gear combination structure also includes a transition gear, which is arranged in the sealing shell, and the transition gear is externally meshed with the roller brush gear and the first outer gear ring respectively, and the roller brush gear is externally meshed with the first outer gear ring through the transition gear. When the transmission mechanism is in the installation state and the first outer gear ring rotates, the transition gear is driven by the first outer gear ring to drive the roller brush gear and the driving wheel to rotate in the same direction.

[0013] In some embodiments of the present application, the transmission mechanism also includes a driving motor, and the gear combination structure also includes a driving gear; a third opening is provided on the sealing shell, the driving gear is provided inside the sealing shell, and the driving gear is meshed with the outside of the first outer gear ring, and the driving motor is provided outside the sealing shell; the driving gear is connected to the output shaft of the driving motor through the third opening, and drives the first outer gear ring to rotate under the drive of the driving motor.

[0014] In some embodiments of the present application, the gear combination structure includes a first outer gear ring, a second tooth segment and a roller brush gear; the first outer gear ring, the second tooth segment and the roller brush gear are arranged in the sealing shell, and the second tooth segment is meshed with the outside of the roller brush gear; the first output shaft is the shaft of the first outer gear ring, and the second output shaft is the shaft of the roller brush gear; when the transmission mechanism is in an installed state on the underwater cleaning robot and the first outer gear ring and the second tooth segment rotate, the first outer gear ring drives the driving wheel to rotate through the first output shaft; the rotation of the second tooth segment drives the roller brush body to rotate relative to the cleaning body of the underwater cleaning robot through the roller brush gear.

[0015] In some embodiments of the present application, the gear combination structure also includes a driving motor and a driving gear, the output shaft of the driving motor passes through the sealing shell and is connected to the driving gear; the driving gear is respectively engaged with the first outer gear ring and the second tooth segment; when the transmission mechanism is in an installed state on the underwater cleaning robot, the driving gear rotates to drive the first outer gear ring and the second tooth segment to rotate, the first outer gear ring rotates to drive the driving wheel to rotate, and the second tooth segment rotates to drive the roller brush gear and the roller brush body to rotate relative to the cleaning body.

[0016] In some embodiments of the present application, a third opening is provided on the sealing shell, and the driving gear is connected to the output shaft of the driving motor through the third opening, and drives the first outer gear ring to rotate under the drive of the driving motor.

[0017] In some embodiments of the present application, a shaft rod is disposed in the sealing shell, and the second tooth segment is sleeved on the shaft rod.

[0018] In some embodiments of the present application, the first outer gear ring and the second gear segment are arranged sequentially along the axial direction of the first output shaft.

[0019] In some embodiments of the present application, the first outer gear ring includes a first tooth segment, the second tooth segment is configured to rotate relative to the first tooth segment, the roller brush gear is externally meshed with the second tooth segment, and when the first tooth segment of the first outer gear ring rotates, the second tooth segment rotates in the opposite direction to the first tooth segment to drive the roller brush gear and the driving wheel to rotate in the same direction.

[0020] In some embodiments of the present application, the gear combination structure also includes a transition gear, which is arranged in the sealing shell, and the transition gear is externally meshed with the driving gear and the first tooth segment respectively, and the first tooth segment is externally meshed with the driving gear through the transition gear; when the driving gear rotates, the transition gear is driven by the driving gear to drive the first tooth segment to rotate, and the driving wheel and the roller brush gear are driven to rotate in the same direction through the first tooth segment.

[0021] In some embodiments of the present application, when the transmission mechanism is in the installation state, a third sealing structure is provided between the third opening and the drive motor, and the third opening is statically sealed by the third sealing structure.

[0022] In some embodiments of the present application, the sealing shell includes a bottom shell and an upper cover, the bottom shell is connected to the upper cover, and a sealing ring is arranged between the bottom shell and the upper cover to form an accommodating space for accommodating the gear combination structure.

[0023] In some embodiments of the present application, the upper cover includes a cover plate and a flange arranged along the edge of the cover plate, the flange is perpendicular to the cover plate, a sealing groove is arranged on the flange, the sealing ring is sleeved on the sealing groove, and the sealing ring is in contact with the inner side of the shell side wall of the bottom shell, wherein the shell side wall of the bottom shell is parallel to the flange.

[0024] In some embodiments of the present application, when the transmission mechanism is in the installation state, the sealing shell is detachably disposed between the driving wheel and the cleaning body of the underwater cleaning robot.

[0025] The second aspect of the embodiments of the present application provides an underwater cleaning robot, comprising: a cleaning body, including a water inlet and a water outlet separated from the water inlet; a driving wheel, configured to rotate relative to the cleaning body; a cleaning roller brush mechanism, including a roller brush body; and the transmission mechanism described in any of the above embodiments, wherein the transmission mechanism is arranged between the driving wheel and the cleaning body.

[0026] In some embodiments of the present application, the second transmission ratio between the driving gear and the cleaning roller brush mechanism is 1:1.

[0027] In some embodiments of the present application, the water inlet is a water inlet for sucking liquid and / or pollutants in the swimming pool, and the water inlet is located behind the cleaning roller brush mechanism in the travel direction of the underwater cleaning robot.

[0028] In some embodiments of the present application, the rotation direction of the roller brush body is used to push the liquid and / or the pollutants toward the water inlet.

[0029] In some embodiments of the present application, a track is also included, and the driving wheel also has a second outer gear ring, the diameter of the first outer gear ring is smaller than the diameter of the second outer gear ring, and the first outer gear ring and the second outer gear ring are coaxially arranged, and the track is sleeved on the driving wheel and meshes with the outside of the second outer gear ring.

[0030] In some embodiments of the present application, a driven wheel is further included, wherein the driven wheel and the driving wheel are arranged on the cleaning body at an interval and can rotate relative to the cleaning body, the driven wheel includes a third outer gear ring, and the inner surface of the track is provided with a plurality of mating teeth, the track is sleeved outside the driving wheel and the driven wheel, and the mating teeth are respectively meshed with the second outer gear ring and the third outer gear ring.

[0031] In the embodiment of the present application, the transmission mechanism includes a gear assembly structure and a sealing shell. By arranging at least part of the gear assembly structure in the sealing shell, the sealing shell can be used to protect the gears in the gear assembly structure, and solid pollutants such as mud and leaves can be prevented from entering the gap of the gears, thereby avoiding the gears from being stuck by solid pollutants, ensuring that the first outer gear ring and the roller brush gear can rotate normally, and the wear of the first outer gear ring and the roller brush gear can be reduced, reducing the failure rate of the underwater cleaning robot and extending the service life of the underwater cleaning robot. When the transmission mechanism is in the installation state, the first output shaft of the gear assembly structure passes through the sealing shell and is connected to the driving wheel of the underwater cleaning robot; the second output shaft of the gear assembly structure passes through the sealing shell and is connected to the roller brush body of the underwater cleaning robot; through the gear transmission of the gear assembly structure placed in the sealing shell, when the driving wheel rotates, the roller brush body can be driven to rotate relative to the cleaning body of the underwater cleaning robot to clean the surface of the swimming pool, that is, through the combination of the first outer gear ring and the roller brush gear in the transmission mechanism, power transmission can be completely performed to achieve the cleaning of the swimming pool surface by the underwater cleaning robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following drawings are intended only to illustrate and explain the present application, and do not limit the scope of the present application.

[0033] Figure 1 A stereoscopic diagram of an underwater cleaning robot provided in an embodiment of the present application.

[0034] Figure 2 A schematic diagram of the installation position of a transmission mechanism provided in an embodiment of the present application.

[0035] Figure 3 A schematic diagram of the installation position of another transmission mechanism provided in an embodiment of the present application.

[0036] Figure 4A three-dimensional diagram of a transmission mechanism at two angles provided in an embodiment of the present application.

[0037] Figure 5 A schematic diagram of the internal gear meshing of a transmission mechanism provided in an embodiment of the present application.

[0038] Figure 6 A three-dimensional diagram at two angles of another transmission mechanism provided in an embodiment of the present application.

[0039] Figure 7 A schematic diagram of the structural decomposition of a transmission mechanism provided in an embodiment of the present application.

[0040] Figure 8 A schematic diagram of internal gear meshing of another transmission mechanism provided in an embodiment of the present application.

[0041] Fig. 9 A schematic diagram of the structural decomposition of another transmission mechanism provided in an embodiment of the present application.

[0042] Fig.10 This is a schematic diagram of a partial explosion of an underwater cleaning robot according to an embodiment of the present application.

[0043] Description of reference numerals:

[0044] 1. Underwater cleaning robot;

[0045] 10. Cleaning body; 10a. Water outlet; 110. Upper shell; 120. Active flap; 130. Bottom plate; 140. Filter basket;

[0046] 20. driving mechanism; 210. driving wheel; 211. second outer gear ring; 220. crawler track; 221. matching teeth; 230. driven wheel; 231. third outer gear ring;

[0047] 30. Cleaning roller brush mechanism; 310. Roller brush body;

[0048] 40. Transmission mechanism; 410. First outer gear ring; 411. First output shaft; 412. First tooth segment; 420. Roller brush gear; 421. Second output shaft; 430. Sealing shell; 431. Bottom shell; 4311. Shell side wall of bottom shell; 432. Upper cover; 4321. Cover plate; 4322. Flange; 4323. Sealing groove; 433. Sealing ring; 434. Shaft; 441. First oil seal ring; 442. First bearing; 443. Second oil seal ring; 444. Second bearing; 445. Sealing pad; 450. Driving gear; 460. Driving motor; 470. Transition gear; 480. Second tooth segment. DETAILED DESCRIPTION

[0049] In order to have a clearer understanding of the technical features, purposes and effects of the embodiments of the present application, the specific implementation methods of the embodiments of the present application are now described with reference to the accompanying drawings.

[0050] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0051] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one or more of the parts with the same structure or function are schematically drawn or only one or more of them are marked.

[0052] The first aspect of the embodiment of the present application provides a transmission mechanism 40, which is mainly applicable to an underwater cleaning robot 1. The underwater cleaning robot 1 is mainly used to clean the underwater parts of various structures, such as the bottom surface and side walls of artificial pools such as swimming pools, sewage treatment pools, and landscape pools, as well as the bottom surface and side walls of artificial waterways such as artificial rivers, etc. The cleaning of a swimming pool is used as an example for explanation below.

[0053] The underwater cleaning robot 1 suitable for the transmission mechanism 40 can be the underwater cleaning robot 1 provided in the second aspect of the embodiment of the present application below, or it can be other suitable underwater cleaning robots 1. Before describing the transmission mechanism 40 of the embodiment of the present application, in combination with the accompanying drawings, the application scenarios of the transmission mechanism 40 are briefly described to facilitate understanding.

[0054] The embodiment of the present application mainly improves the transmission mechanism 40 in the driving mechanism 20 included in the underwater cleaning robot 1 to improve the movement efficiency and cleaning effect of the underwater cleaning robot 1. The overall structure and working process of the underwater cleaning robot 1 in the embodiment of the present application are briefly described below:

[0055] Figure 1 This is a structural schematic diagram of an underwater cleaning robot 1 using the transmission mechanism 40 of an embodiment of the present application. The underwater cleaning robot 1 of the embodiment of the present application mainly includes a cleaning body 10, a driving mechanism 20, a cleaning roller brush mechanism 30 and a transmission mechanism 40.

[0056] The underwater cleaning robot 1 sucks liquid and / or pollutants through the cleaning body 10, filters the liquid and / or pollutants through the cleaning body 10, leaves the pollutants inside the cleaning body 10, and discharges the filtered liquid back into the swimming pool, and repeats this process to complete the filtration of the liquid in the swimming pool. The transmission mechanism 40 provided in the embodiment of the present application is respectively connected to the cleaning body 10 and the driving wheel 210 in the driving mechanism 20, so that during the operation of the underwater cleaning robot 1, the cleaning body 10 is driven to move inside the swimming pool through the transmission mechanism 40. Therefore, while the cleaning body 10 is filtering the liquid and / or pollutants, as the cleaning body 10 moves in the swimming pool, at least a portion of the surface of the swimming pool is cleaned through the cleaning roller brush mechanism 30, and the bottom and side walls of the swimming pool are cleaned, thereby achieving the purpose of cleaning the entire swimming pool.

[0057] The following is combined with Figure 2-9 The transmission mechanism 40 of the embodiment of the present application is described in detail:

[0058] The transmission mechanism 40 includes a gear assembly structure and a sealed shell 430, and at least part of the gear assembly structure is disposed in the sealed shell 430. The gear assembly structure includes gears and rotating shafts corresponding to the gears, wherein the rotating shafts include a first output rotating shaft 411 and a second output rotating shaft 421, and the first output rotating shaft 411 and the second output rotating shaft 421 can be directly or indirectly meshed with the corresponding gears, and the first output rotating shaft 411 and the second output rotating shaft 421 can rotate with the rotation of the corresponding gears.

[0059] The sealing shell 430 can be a completely enclosed structure. Through the completely sealed sealing shell 430, on the one hand, the water body can be isolated to achieve the waterproof function, so that during the movement of the underwater cleaning robot 1, the water can be prevented from hindering the transmission of the gear combination structure, so that the transmission efficiency of the gear combination structure is not affected by water; on the other hand, solid pollutants such as mud and leaves can be prevented from entering the gap of the gear combination structure with the water flow, so as to prevent the solid pollutants from hindering the rotation of the gears in the gear combination structure, thereby ensuring the normal operation of the gear combination structure. The specific sealing method of the sealing shell 430 can refer to the relevant technology, which will not be repeated here, and is within the protection scope of the embodiments of the present application.

[0060] When the transmission mechanism 40 is in the installation state of being installed on the underwater cleaning robot 1: the first output shaft 411 of the gear combination structure passes through the sealing shell 430 and is connected to the driving wheel 210 of the underwater cleaning robot 1. Through the first output shaft 411, power can be transmitted between the gear combination structure and the driving wheel 210, for example, power is transmitted from the gear combination structure to the driving wheel 210, or power is transmitted from the driving wheel 210 to a non-gear combination structure. The second output shaft 421 of the gear combination structure passes through the sealing shell 430 and is connected to the roller brush body of the underwater cleaning robot 1. Through the second output shaft 421, power can be transmitted between the gear combination structure and the roller brush body, so that the gear combination structure can be used to drive the roller brush body to rotate for cleaning.

[0061] Through the gear transmission of the gear combination structure placed in the sealed shell 430, when the driving wheel 210 is driven, the roller brush body is driven to rotate relative to the cleaning body 10 of the underwater cleaning robot 1. Specifically, the transmission mechanism 40 can drive the gear connected to the first output shaft 411 and the first output shaft 411 to rotate through the gear transmission of the gear combination structure, thereby driving the driving wheel 210 to rotate through the first output shaft 411. At the same time, when the transmission mechanism 40 is driven by the gear transmission of the gear combination structure, it can also drive the gear connected to the second output shaft 421 and the second output shaft 421 to rotate, thereby driving the roller brush body relative to the cleaning body 10 of the underwater cleaning robot 1 through the second output shaft 421.

[0062] It should be understood that the gear combination structure transmits power through meshing between gears. The specific setting method of each gear can refer to the relevant technology and will not be repeated here. It is within the protection scope of the embodiments of the present application.

[0063] In the embodiment of the present application, the transmission mechanism includes a gear assembly structure and a sealing shell. By arranging at least part of the gear assembly structure in the sealing shell, the sealing shell can be used to protect the gears in the gear assembly structure, and solid pollutants such as mud and leaves can be prevented from entering the gap of the gears, thereby avoiding the gears from being stuck by solid pollutants, ensuring that the first outer gear ring and the roller brush gear can rotate normally, and the wear of the first outer gear ring and the roller brush gear can be reduced, reducing the failure rate of the underwater cleaning robot and extending the service life of the underwater cleaning robot. When the transmission mechanism is in the installation state, the first output shaft of the gear assembly structure passes through the sealing shell and is connected to the driving wheel of the underwater cleaning robot; the second output shaft of the gear assembly structure passes through the sealing shell and is connected to the roller brush body of the underwater cleaning robot; through the gear transmission of the gear assembly structure placed in the sealing shell, while the driving wheel is driven, the roller brush body can be driven to rotate relative to the cleaning body of the underwater cleaning robot to clean the surface of the swimming pool, that is, through the combination of the first outer gear ring and the roller brush gear in the transmission mechanism, power transmission can be completely performed to achieve the cleaning of the swimming pool surface by the underwater cleaning robot.

[0064] In some optional embodiments, the gear assembly structure includes a first outer gear ring 410 and a roller brush gear 420, for example Figure 7 and Fig. 9 As shown, the first output rotating shaft 411 is the rotating shaft of the first outer gear ring 410, and the second output rotating shaft 421 is the rotating shaft of the roller brush gear 420. The first outer gear ring 410 and the roller brush gear 420 are arranged in the sealing shell 430, and the first outer gear ring 410 is externally meshed with the roller brush gear 420. The first outer gear ring 410 can be a single gear or a part of a gear having multiple gear rings. The first outer gear ring 410 and the roller brush gear 420 are both connected to a rotating shaft to perform corresponding power transmission by means of the rotating shaft, such as Figure 7 and Fig. 9 As shown, the rotating shaft of the first outer gear ring 410 is the first output rotating shaft 411, and the rotating shaft of the roller brush gear 420 is the second output rotating shaft 421. It should be understood that the connection between the first outer gear ring 410 and the first output rotating shaft 411, and the connection between the roller brush gear 420 and the second output rotating shaft 421 can be a fixed connection, such as a snap connection, welding, etc., so as to ensure that the rotating shaft can transmit power.

[0065] Specifically, when the transmission mechanism 40 is in the installation state of being installed on the underwater cleaning robot 1: the first output shaft 411 passes through the sealing shell 430 and is connected to the driving wheel 210 of the underwater cleaning robot 1, that is, the driving wheel 210 can be driven to rotate by driving the first outer gear ring 410 to rotate. The second output shaft 421 extends out of the sealing shell 430 and is connected to the roller brush body 310 of the underwater cleaning robot 1. Among them, when the first outer gear ring 410 rotates, the roller brush gear 420 is driven by the first outer gear ring 410 through the meshing between the first outer gear ring 410 and the roller brush gear 420, thereby driving the roller brush body 310 to rotate relative to the cleaning body 10 of the underwater cleaning robot 1.

[0066] As a feasible implementation method, Figure 6 The transmission mechanism 40 is a three-dimensional diagram of the transmission mechanism 40. The transmission mechanism 40 can use a driving motor as a power source to provide power for the driving wheel 210 and the roller brush body 310. For example, the arrangement of the driving motor can refer to Figure 7 and Fig. 9 The two transmission mechanisms 40 are shown in the exploded view. Figure 7 In the corresponding embodiment, when the transmission mechanism 40 is in the installed state, the driving motor 460 can be operated to drive the driving gear 450 to rotate, thereby driving the first outer gear ring 410 to rotate, thereby driving the driving wheel 210 to rotate through the first output shaft 411, so that the driving wheel 210 drives the cleaning body 10 to move in the swimming pool. In addition, the first outer gear ring 410 can drive the roller brush gear 420 to rotate through the transition gear 470 that meshes with the first outer gear ring 410 and the roller brush gear 420 respectively (see Figure 8 As shown), the roller brush body 310 is driven to rotate through the second output shaft 421. Fig. 9 In the corresponding embodiment, when the transmission mechanism 40 is in the installation state, the driving motor 460 can be operated to drive the driving gear 450 to rotate, and then the first outer gear ring 410 can be driven to rotate through the transition gear 470 that is respectively meshed with the driving gear 450 and the first outer gear ring 410, thereby driving the driving wheel 210 to rotate through the first output shaft 411, so that the driving wheel 210 drives the cleaning body 10 to move in the swimming pool. In addition, the driving gear 450 can also drive the roller brush gear 420 to rotate through the second tooth segment 480 that is respectively meshed with the driving gear 450 and the roller brush gear 420, thereby driving the roller brush body 310 to rotate through the second output shaft 421.

[0067] In the embodiment of the present application, the transmission mechanism 40 includes a first outer gear ring 410, a roller brush gear 420 and a sealing shell 430. The first outer gear ring 410 and the roller brush gear 420 are arranged in the sealing shell 430. The sealing shell 430 can prevent solid pollutants such as mud, sand and leaves from entering between the first outer gear ring 410 and the roller brush gear 420, thereby preventing the first outer gear ring 410 and the roller brush gear 420 from being stuck, ensuring that the first outer gear ring 410 and the roller brush gear 420 can rotate normally, which can reduce the wear of the first outer gear ring 410 and the roller brush gear 420, reduce the failure rate of the underwater cleaning robot 1 and extend the service life of the underwater cleaning robot 1. In addition, when the transmission mechanism 40 is in the installation state, the first output shaft 411 passes through the sealing shell 430 and is connected to the driving wheel 210 of the underwater cleaning robot 1, and the second output shaft 421 extends out of the sealing shell 430 and is connected to the roller brush body 310 of the underwater cleaning robot 1, and the roller brush gear 420 is driven by the first outer gear ring 410 to drive the roller brush body 310 to rotate relative to the cleaning body 10 of the underwater cleaning robot 1. On the one hand, the driving wheel 210 can be driven to rotate by the rotation of the first outer gear ring 410, thereby driving the cleaning robot to move in the swimming pool. On the other hand, the roller brush gear 420 can be driven to rotate by the first outer gear ring 410 or by the second tooth segment, and the roller brush gear 420 can be driven to rotate by the rotation of the roller brush gear 420 to clean the surface of the swimming pool. That is, through the combination of the first outer gear ring 410 and the roller brush gear 420 in the transmission mechanism 40, power transmission can be completely performed to achieve the cleaning of the swimming pool surface by the underwater cleaning robot 1.

[0068] like Figure 6-Figure 9 As shown, in an optional embodiment, the transmission mechanism 40 includes a driving motor 460, and the gear assembly structure further includes a driving gear 450. A third opening is provided on the sealed shell 430, the driving gear 450 is provided inside the sealed shell 430, and the driving gear 450 is meshed with the outside of the first outer gear ring 410, and the driving motor 460 is provided outside the sealed shell 430; the driving gear 450 is connected to the output shaft of the driving motor 460 through the third opening, and drives the first outer gear ring 410 to rotate under the drive of the driving motor 460.

[0069] It should be understood that the transmission mechanism 40 may not include the drive motor 460, that is, the drive motor 460 is arranged in other parts of the underwater cleaning robot 1, but the driving gear 450 is still connected to the output shaft of the drive motor 460 through the third opening.

[0070] In the embodiment of the present application, the transmission mechanism 40 includes a driving motor 460 and a driving gear 450 arranged in the sealing shell 430. When the transmission mechanism 40 is in the installed state, the driving gear 450 can be connected to the output shaft of the driving motor 460 through the third opening, and the driving gear 450 is externally meshed with the first outer gear ring 410, so that the first outer gear ring 410 is driven by the driving motor 460 to rotate, and then the roller brush gear 420 can be driven to rotate by the first outer gear ring 410. When the transmission mechanism 40 is in the installed state, the first outer gear ring 410 is used to simultaneously drive the driving wheel 210 and the roller brush gear 420 to rotate. When the first outer gear ring 410 rotates, the roller brush gear 420 is used to drive the roller brush body 310 to rotate, and the driving wheel 210 is used to drive the cleaning robot to move, so that the cleaning robot can clean the surface of the swimming pool.

[0071] As an optional embodiment, the sealing shell 430 is provided with a first opening and a second opening, the first output shaft 411 is connected to the driving wheel 210 through the first opening, and the second output shaft 421 is connected to the roller brush body 310 through the second opening. In the embodiment of the present application, openings are provided separately for the first output shaft 411 and the second output shaft 421, respectively, so that the openings can be more flexible, thereby minimizing the opening area on the sealing shell 430, and ensuring the sealing shell 430's blocking effect on solid pollutants such as mud, sand, and leaves.

[0072] As an optional embodiment, a first sealing structure is provided between the first outer gear ring 410 and the first opening, and the first opening realizes dynamic sealing through the first sealing structure; and / or, a second sealing structure is provided between the roller brush gear 420 and the second opening, and the second opening realizes dynamic sealing through the second sealing structure. Dynamic sealing is a sealing form in which the contact surface between the sealing structure and the sealed component has relative movement. In the embodiment of the present application, the first sealing structure can be provided between the first output shaft 411 and the hole wall of the first opening, and the second sealing structure can be provided between the second output shaft 421 and the hole wall of the second opening. The embodiment of the present application does not limit the specific structure of the first sealing structure and the second sealing structure. As long as the structure can realize dynamic sealing, it is within the protection scope of the embodiment of the present application.

[0073] In the embodiment of the present application, a first sealing structure may be provided between the first outer gear ring 410 and the first opening, and dynamic sealing may be achieved at the first opening through the first sealing structure. A second sealing structure may also be provided between the roller brush gear 420 and the second opening, and dynamic sealing may be achieved at the second opening through the second sealing structure. This prevents solid contaminants from entering the sealing shell 430 from the first opening or the second opening, and can more effectively prevent solid contaminants from hindering the rotation of the first outer gear ring 410 and the roller brush gear 420.

[0074] like Figure 7 and Fig. 9 As shown, as an optional embodiment, the first sealing structure may include a first oil seal ring 441, and the first oil seal ring 441 is sleeved on the first output shaft 411. Lubricating oil or other sealing fillers may be filled between the first oil seal ring 441 and the first output shaft 411 to ensure the sealing effect of the dynamic seal. As shown in FIG. 7 , a first bearing 442 is provided on the side of the first outer gear ring 410 close to the first opening, and another first bearing 442 is provided on the other side of the first outer gear ring 410. The two first bearings 442 are sleeved on the first output shaft 411 together with the first outer gear ring 410. The first output shaft 411 can be supported by the two first bearings 442, so that the first outer gear ring 410 can be installed. The first sealing structure may include one or more first oil seal rings 441, such as Figure 7 and Fig. 9 As shown, the first oil seal ring 441 can be arranged between the first opening and the first bearing 442 located on the side of the first outer gear ring 410 close to the first opening. The first oil seal ring 441 can be squeezed by the first bearing 442 to make it closely contact with the first opening, thereby sealing the first opening.

[0075] Similarly, the second sealing structure may include a second oil seal ring 443, which is sleeved on the second output shaft 421, and a sealing filler such as lubricating oil may be filled between the second oil seal ring 443 and the second output shaft 421 to ensure the sealing effect of the dynamic seal. Figure 7 As shown, a second bearing 444 is disposed on one side of the roller brush gear 420 close to the second opening, and another second bearing 444 is disposed on the other side of the roller brush gear 420. The two second bearings 444 are sleeved on the second output shaft 421 together with the roller brush gear 420. The second output shaft 421 can be supported by the two second bearings 444, so as to install the roller brush gear 420. The second sealing structure may include one or more second oil seal rings 443, such as Figure 7 and Fig. 9 As shown, the second oil seal ring 443 can be arranged between the second opening and the second bearing 444 located on the side of the roller brush gear 420 close to the second opening. The first oil seal ring 441 can be squeezed by the second bearing 444 to make close contact with the first opening, thereby sealing the second opening.

[0076] The first oil seal ring 441 and the second oil seal ring 443 can be made of wear-resistant materials such as rubber and polytetrafluoroethylene to reduce the wear of the first oil seal ring 441 and the second oil seal ring 443. It should be understood that the sealing shell 430 is provided with a mounting structure for mounting the first output shaft 411 or the first bearing 442, and is provided with a mounting structure for mounting the second output shaft 421 or the second bearing 444, so that the first outer gear ring 410 and the roller brush gear 420 can be installed in the sealing shell 430. The specific form of the mounting structure in the sealing shell 430 can refer to the relevant technology, and will not be repeated here, which is within the protection scope of the embodiments of the present application.

[0077] In the embodiment of the present application, the first sealing structure may include a first oil seal ring 441, and a sealing filler such as lubricating oil may be filled between the first oil seal ring 441 and the first output shaft 411, which can adapt to the rotational movement of the first output shaft 411 on the basis of reducing friction resistance, and realize dynamic sealing of the first opening. The second sealing structure may include a second oil seal ring 443, and a sealing filler such as lubricating oil may be filled between the second oil seal ring 443 and the second output shaft 421, which can adapt to the rotational movement of the second output shaft 421 on the basis of reducing friction resistance, and realize dynamic sealing of the second opening. In addition, the first sealing structure using the first oil seal ring 441 and the second sealing structure using the second oil seal ring 443 also have the advantages of simple structure and convenient disassembly, and are highly applicable.

[0078] like Figure 7 and Fig. 9 As shown, in some optional embodiments, when the transmission mechanism 40 is in the installed state, a third sealing structure is provided between the third opening and the drive motor 460, and the third opening is statically sealed by the third sealing structure. Figure 7 and Fig. 9 As shown, the third sealing structure may include a sealing gasket 445, through which the gap between the third opening and the motor is sealed. The sealing gasket 445 of the third sealing structure may be a suitable material such as rubber. The present embodiment of the application does not specifically limit the material of the sealing gasket 445, as long as a good sealing effect can be achieved. Of course, the third sealing structure may also be other suitable structures, which may be specifically referred to in the relevant technology, and will not be described here in detail, and are all within the protection scope of the present embodiment of the application.

[0079] In the embodiment of the present application, there is no relative movement between the sealing shell 430 and the outer shell of the driving motor 460, so a third sealing structure can be set between the third opening and the driving motor 460 to seal the gap between the hole wall of the third opening and the motor, thereby preventing solid contaminants from entering the sealing shell 430 through the third opening, thereby ensuring the sealing effect of the sealing shell 430.

[0080] Optionally, the roller brush gear 420 may directly mesh with the outside of the first outer gear ring 410, so that the roller brush gear 420 rotates in the opposite direction relative to the driving wheel 210 when driven by the first outer gear ring 410. Alternatively, the gear assembly structure may include the roller brush gear 420 and the transition gear 470, and the roller brush gear 420 meshes with the outside of the first outer gear ring 410 through the transition gear 470. Specifically, Figure 7 As shown, the transition gear 470 is disposed in the sealing shell 430, the transition gear 470 is connected between the roller brush gear 420 and the first outer gear ring 410, and the transition gear 470 is externally meshed with the roller brush gear 420 and the first outer gear ring 410 respectively. When the transmission mechanism 40 is in the installed state and the driving wheel 210 rotates, the transition gear 470 can be driven by the first outer gear ring 410, thereby driving the roller brush gear 420 to rotate in the same direction relative to the driving wheel 210. Among them, the transition gear 470 is externally meshed with the roller brush gear 420 and the first outer gear ring 410 respectively, so as to transmit the power of the first outer gear ring 410 to the roller brush gear 420, and make the rotation direction of the roller brush gear 420 the same as the rotation direction of the first outer gear ring 410, that is, rotate in the same direction as the driving wheel 210.

[0081] Therefore, when the driving wheel 210 rotates, the rotation direction of the roller brush gear 420 can be adjusted through the transition gear 470 to be consistent with the rotation direction of the second outer gear ring 211, and the rotation direction of the roller brush body 310 can be driven to be consistent with the forward direction of the underwater cleaning robot 1. In this way, by adjusting the rotation direction of the roller brush body 310, the pollutants in the swimming pool brushed by the roller brush body 310 can be pushed toward the water inlet of the cleaning body 10, so that the pollutants can be sucked in through the water inlet for cleaning and filtering, thereby further improving the cleaning efficiency of the underwater cleaning robot 1.

[0082] like Fig. 9 As shown, in some optional embodiments, the gear combination structure includes a first outer gear ring 410, a second tooth segment 480 and a roller brush gear 420; the first outer gear ring 410, the second tooth segment 480 and the roller brush gear 420 are arranged in a sealing shell 430, and the second tooth segment 480 is externally meshed with the roller brush gear 420; the first output shaft 411 is the rotating shaft of the first outer gear ring 410, and the second output shaft 421 is the rotating shaft of the roller brush gear 420; when the transmission mechanism 40 is in an installed state on the underwater cleaning robot and the first outer gear ring 410 and the second tooth segment 480 rotate, the first outer gear ring 410 drives the driving wheel to rotate through the first output shaft 411; the second tooth segment 480 rotates through the roller brush gear 420 to drive the roller brush body 310 to rotate relative to the cleaning body of the underwater cleaning robot.

[0083] The first outer gear ring 410 and the second gear segment 480 can be indirectly driven by the drive motor through a transition component. For example, as shown in Figure 9, the first outer gear ring 410 and the second gear segment 480 are driven by a driving gear 450 connected to the output shaft of the drive motor 460. One of the first outer gear ring 410 and the second gear segment 480 can also be directly connected to the output shaft, and then the other of the first outer gear ring 410 and the second gear segment 480 is indirectly driven by the drive motor through a transition gear and other components. The specific gear combination structure can refer to the relevant technology and will not be repeated here.

[0084] In the embodiment of the present application, the gear combination structure includes a first outer gear ring 410, a second tooth segment 480 and a roller brush gear 420, and the second tooth segment 480 is externally meshed with the roller brush gear 420; when the transmission mechanism 40 is in an installed state on the underwater cleaning robot and the first outer gear ring 410 and the second tooth segment 480 rotate, the first outer gear ring 410 can drive the driving wheel to rotate through the first output shaft 411; the rotation of the second tooth segment 480 can drive the roller brush body 310 to rotate relative to the cleaning body of the underwater cleaning robot through the roller brush gear 420, so that the driving wheel can drive the underwater cleaning robot to move while using the rotation of the roller brush body 310 to perform cleaning synchronously.

[0085] The gear assembly structure also includes a driving motor 460 and a driving gear 450. The output shaft of the driving motor 460 passes through the sealing shell 430 and is connected to the driving gear 450. The driving gear 450 is respectively meshed with the first outer gear ring 410 and the second gear segment 480. When the transmission mechanism 40 is installed on the underwater cleaning robot, the driving gear 450 rotates to drive the first outer gear ring 410 and the second gear segment 480 to rotate. The first outer gear ring 410 rotates to drive the driving wheel to rotate, and the second gear segment 480 rotates to drive the roller brush gear 420 and the roller brush body 310 to rotate relative to the cleaning body.

[0086] In the embodiment of the present application, the second tooth segment 480 meshing with the driving gear 450 can be driven to rotate by rotating, so as to drive the roller brush gear 420 meshing with the roller brush to rotate, thereby driving the roller brush body to rotate, so as to clean the surface of the swimming pool. Since the driving gear 450 and the second tooth segment 480 are meshing with the outside, and the roller brush gear 420 and the second tooth segment 480 are also meshing with the outside, the configuration of the outside meshing can make assembly simpler and more convenient, and can reduce the requirements for processing accuracy, thereby reducing processing costs.

[0087] In some optional embodiments, a third opening is provided on the sealing shell 430, and the driving gear 450 is connected to the output shaft of the driving motor 460 through the third opening, and drives the first outer gear ring 410 to rotate under the drive of the driving motor 460. The specific arrangement of the third opening can refer to the arrangement of the third opening in the above embodiment, which also has the advantages of the third opening in the embodiment, and will not be described in detail here.

[0088] like Fig. 9 As shown, in some optional embodiments, a shaft 434 is provided on the sealing shell 430, and the second tooth segment 480 is sleeved on the shaft 434. The second tooth segment 480 can be reliably supported and positioned by the shaft 434, and the shaft 434 can be provided with a fixing structure for limiting the second tooth segment 480 to prevent the second tooth segment 480 from falling off the shaft 434. A first bearing 442 is provided in the shaft 434, and the first output shaft passes through the first bearing 442 and is connected to the first outer gear ring 410, and the first outer gear ring 410 includes a first tooth segment 412. It should be understood that a certain space should be left at the end of the shaft 434 for transmission between the first tooth segment 412 and the driving gear 450.

[0089] The transmission mechanism 40 drives the driving wheel 210 to rotate to achieve movement through the first tooth segment 412 of the first outer gear ring 410 of the driving wheel 210 and the external meshing of the driving gear 450 of the driving motor 460, so that when the moving time is constant, the first outer gear ring 410 with a small diameter drives the driving wheel 210 with a large diameter to rotate, so that the underwater cleaning robot 1 can move farther, thereby improving the moving efficiency of the underwater cleaning robot 1, thereby improving the cleaning efficiency. At the same time, since the rolling of the roller brush body 310 can be achieved through the external meshing of the second tooth segment 480 and the roller brush gear 420, if the rotation speed of the roller brush body 310 is the same as that of the roller brush body in the prior art, and thus the cleaning effect can be guaranteed to remain unchanged, and if the moving time is the same, the roller brush body 310 of the embodiment of the present application becomes farther as the moving distance of the underwater cleaning robot 1 becomes farther, thereby making the utilization rate of the roller brush body 310 higher, thereby reducing the wear of the roller brush body 310 to a certain extent, and improving the service life of the roller brush body.

[0090] In one embodiment of the present application, the first tooth segment 412 and the second tooth segment 480 of the first outer gear ring 410 are sequentially arranged along the axial direction of the first output shaft, wherein the first tooth segment 412 and the second tooth segment 480 are preferably coaxially arranged. The diameter of the first tooth segment 412 can be, but is not limited to, smaller than the diameter of the second tooth segment 480.

[0091] The second tooth segment 480 is configured to be rotatable relative to the first tooth segment 412, and the roller brush gear 420 is externally meshed with the second tooth segment 480, and when the first tooth segment 412 of the first outer gear ring 410 rotates, the second tooth segment 480 and the first tooth segment 412 rotate in opposite directions to drive the roller brush gear 420 and the driving wheel 210 to rotate in the same direction.

[0092] In some optional embodiments, the gear assembly structure further includes a transition gear 470, which is disposed in the sealed shell, and the transition gear 470 is externally meshed with the driving gear 450 and the first tooth segment 412, respectively, and the first tooth segment 412 is externally meshed with the driving gear 450 through the transition gear 470; when the driving gear 450 rotates, the transition gear 470 is driven by the driving gear 450 to drive the first tooth segment 412 to rotate, and then the driving wheel 210 and the roller brush gear 420 are driven to rotate in the same direction through the first tooth segment 412. It should be understood that a certain space should be left at the end of the shaft 434 for installing the second tooth segment 480 for installing the transition gear 470, so that the first tooth segment 412 can mesh with the driving gear 450 through the transition gear 470.

[0093] In the embodiment of the present application, when the driving gear 450 drives the transition gear 470 and the second tooth segment 480 to rotate, the first tooth segment 412 can be driven to rotate through the transition gear 470, driving the driving wheel 210 to rotate, and the roller brush gear 420 can be driven to rotate through the second tooth segment 480. At this time, the second tooth segment 480 and the first tooth segment 412 rotate in opposite directions, so that the rotation direction of the roller brush gear 420 is adjusted to be consistent with the rotation direction of the driving wheel 210, so as to drive the roller brush body to rotate synchronously toward the water inlet, so as to facilitate the water inlet to suck in pollutants for a cleaning and filtering procedure.

[0094] Furthermore, in order to ensure the efficiency of the external transmission of the driving gear 450, preferably, the first transmission ratio between the driving gear 450 and the first outer gear ring 410 is less than the first set value. Among them, the first transmission ratio refers to the ratio of the rotational speed of the input gear to the rotational speed of the output gear. Specifically in this example, the first transmission ratio can be the ratio between the rotational speed of the driving gear 450 and the rotational speed of the first outer gear ring 410. It is not difficult to see from the definition of the first transmission ratio that since the rotational speed of the driving gear 450 is related to the rotational speed of the driving motor 460, therefore, assuming that the rotational speed of the driving motor 460 remains unchanged, the higher the rotational speed of the first outer gear ring 410, the smaller the value of the first transmission ratio, that is, the faster the rotational speed of the first outer gear ring 410, the faster the moving speed of the cleaning body 10.

[0095] In one feasible method, the first setting value can be 2.5:1 (ie 5:2). This transmission ratio can ensure that the moving speed of the cleaning body 10 meets the requirements and does not move too slowly. It can also ensure that the cleaning effect is moderate and effective cleaning will not be caused by moving too fast.

[0096] In one example, the number of teeth of the driving gear 450 of the driving motor 460 ranges from 10 to 15, for example, 13, and the number of teeth of the first outer gear ring 410 ranges from 30 to 35, for example. Of course, in other examples, the first set value can be other values.

[0097] In an optional embodiment, the sealing shell 430 includes a bottom shell 431 and an upper cover 432, the bottom shell 431 is connected to the upper cover 432, and a sealing ring 433 is arranged between the bottom shell 431 and the upper cover 432. After the bottom shell 431 and the upper cover 432 are connected, a complete sealing shell 430 can be formed, forming a accommodating space for accommodating the gear combination structure to accommodate components such as the first outer gear ring 410 and the roller brush gear 420.

[0098] In the embodiment of the present application, the sealed shell 430 includes a bottom shell 431 and an upper cover 432, and the bottom shell 431 is connected to the upper cover 432. The sealed shell 430 can be opened by separating the bottom shell 431 from the upper cover 432, so as to facilitate the inspection and repair of the first gear ring and the roller brush gear 420 and other components inside the sealed shell 430. In addition, the gap at the connection between the bottom shell 431 and the upper cover 432 can be sealed by the sealing ring 433 between the bottom shell 431 and the upper cover 432, so as to prevent solid pollutants from entering the sealed shell 430 from the connection between the bottom shell 431 and the upper cover 432.

[0099] like Figure 7 and Fig. 9 As shown, as a feasible implementation, the upper cover 432 includes a cover plate 4321 and a flange 4322 arranged along the edge of the cover plate 4321, the flange 4322 is perpendicular to the cover plate 4321, a sealing groove 4323 is arranged on the flange 4322, and the sealing ring 433 is sleeved on the sealing groove 4323. When the upper cover 432 is connected to the bottom shell 431, one side of the sealing ring 433 contacts the inner side of the shell side wall 4311 of the bottom shell, and the other side of the sealing ring 433 contacts the sealing groove 4323, so that there is no gap between the cover plate 4321 and the bottom shell 431. Among them, the shell side wall 4311 of the bottom shell is parallel to the flange 4322, so as to facilitate the connection between the cover plate 4321 and the bottom shell 431.

[0100] In the embodiment of the present application, by setting a flange 4322 on the edge of the cover plate 4321 of the upper cover 432, setting a sealing groove 4323 on the flange 4322, and sleeved on the sealing groove 4323, when the upper cover 432 is connected to the bottom shell 431, one side of the sealing ring 433 can be in contact with the inner side of the shell side wall 4311 of the bottom shell, and the other side of the sealing ring 433 can be in contact with the sealing groove 4323, so that the sealing ring 433 is fixed by using the sealing groove 4323, and a stable sealing barrier is established between the upper cover 432 and the bottom shell 431, so as to better seal the connection between the upper cover 432 and the bottom shell 431.

[0101] In some optional embodiments, when the transmission mechanism 40 is in an installed state, the sealing shell 430 is detachably arranged between the driving wheel 210 of the underwater cleaning robot 1 and the cleaning body 10, that is, a detachable connection method can be adopted between the sealing shell 430 and the cleaning body 10 of the cleaning robot. This arrangement makes the disassembly of the transmission mechanism 40 more convenient, thereby facilitating the maintenance of the transmission mechanism 40.

[0102] According to a second aspect of an embodiment of the present application, an underwater cleaning robot 1 is provided.

[0103] In this embodiment, the overall structure of the underwater cleaning robot 1 is substantially the same as the cleaning robot equipped with the transmission mechanism 40 in the above-mentioned embodiments, and the underwater cleaning robot 1 mainly includes a cleaning body 10, a driving mechanism 20, a cleaning roller brush mechanism 30, and a transmission mechanism 40. Specifically, the cleaning body 10 includes a water inlet and a water outlet 10a separated from the water inlet; the cleaning roller brush mechanism 30 includes a roller brush body 310; the driving mechanism 20 includes a driving wheel 210, and the driving wheel 210 is configured to rotate relative to the cleaning body 10; the transmission mechanism 40 may be the transmission mechanism 40 described in any of the above-mentioned embodiments, which is arranged between the driving wheel 210 and the cleaning body 10.

[0104] The transmission mechanism 40 used in the underwater cleaning robot 1 provided in the embodiment of the present application is based on the same inventive concept as the aforementioned transmission mechanism 40 embodiment and can achieve the same effect. The specific implementation process of the transmission mechanism 40 can refer to the description in the aforementioned transmission mechanism 40 embodiment, which will not be repeated here.

[0105] The following is combined with Figure 1-Figure 10 The structure and working process of the underwater cleaning robot 1 of the embodiment of the present application are described in detail as follows:

[0106] The underwater cleaning robot 1 of the embodiment of the present application filters the liquid and / or pollutants in the swimming pool through the cleaning body 10. The cleaning body 10 includes a shell for mounting a driving mechanism 20 and a cleaning roller brush mechanism 30, etc. In one example, the shell may include an upper shell 110, a movable flap 120, and a chassis 130. The upper shell 110 is connected to the chassis 130, and the upper shell 110 is detachable relative to the chassis 130, which is convenient for cleaning or repairing the internal parts of the cleaning robot 1. The movable flap 120 is connected to the upper shell 110, and the movable flap 120 is rotatable relative to the upper shell 110, which is convenient for replacing and cleaning the internal parts of the cleaning body 10.

[0107] In order to be able to suck in the liquid and / or pollutants in the swimming pool, the cleaning body 10 includes a water inlet and a water outlet 10a separated from the water inlet. For example, a water inlet is provided below the chassis 130 of the cleaning body 10 as a water inlet, the upper shell 110 is provided with a water outlet 10a, and a filter basket 140 is provided inside the cleaning body 10. The liquid and / or pollutants in the swimming pool enter the interior of the cleaning body 10 through the water inlet located at the bottom of the cleaning body 10, flow through the filter basket 140, and leave the pollutants in the filter basket 140. The filtered liquid flows out of the underwater cleaning robot 1 through the water outlet 10a of the upper shell 110, and returns to the swimming pool. This is repeated to complete the cleaning and filtration of the liquid and / or pollutants inside the swimming pool.

[0108] Optionally, the water inlet is provided with a one-way valve to prevent the water flowing into the underwater cleaning robot 1 from flowing out in reverse and affecting the water inlet, and to prevent the internal pollutants from leaking into the swimming pool again through the water inlet.

[0109] Preferably, in the traveling direction of the underwater cleaning robot 1, the aforementioned water inlet is located behind the cleaning roller brush mechanism 30. With this configuration, it is convenient for the cleaning roller brush mechanism 30 to brush up pollutants on the front side of the cleaning body 10, and then the pollutants are sucked into the water inlet that catches up with the movement of the cleaning body 10, and filtered through the filter basket 140 in the cleaning body 10, thereby improving the cleaning efficiency of the underwater cleaning robot 1.

[0110] Optionally, in order to improve the efficiency of collecting pollutants by the underwater cleaning robot 1, the rotation direction of the cleaning roller brush mechanism 30 is used to push the pollutants toward the water inlet. When the rotation direction of the cleaning roller brush mechanism 30 is consistent with the forward direction of the underwater cleaning robot 10, it is convenient to push the brushed pollutants toward the water inlet, further improving the cleaning efficiency of the underwater cleaning robot 1.

[0111] Of course, in other embodiments, based on the different relative positional relationship between the cleaning roller brush mechanism 30 and the water inlet, the rotation direction of the cleaning roller brush mechanism 30 may also be opposite to the forward direction of the underwater cleaning robot 1, and there is no limitation to this.

[0112] For example, in an embodiment where the rotation direction of the cleaning roller brush mechanism 30 is opposite to the forward direction of the underwater cleaning robot 1, the water inlet can be provided in the upper housing 110, and a suction device docking with the water inlet is provided in the cleaning body 10. When the pollutants on the surface of the swimming pool are brushed up by the cleaning roller brush mechanism 30 and pushed toward the water inlet, they can be sucked into the water inlet under the action of the suction device, and after being filtered by the filter basket 140, the pollutants are left in the filter basket 140 and the filtered liquid flows out of the underwater cleaning robot 1 through the water outlet 10a and returns to the swimming pool.

[0113] It is understood that in some embodiments of the present application, water inlets may be provided at both the bottom and front sides of the cleaning body 10 to increase the collection efficiency of pollutants. In such embodiments, the cleaning roller brush mechanism 30 may be, but is not limited to, reciprocatingly rotatable relative to the cleaning body 10, for example, switching between clockwise rotation and counterclockwise rotation through a gear change mechanism, thereby performing a cleaning procedure on pollutants with relatively strong adhesion on the surface of the swimming pool.

[0114] In some embodiments of the present application, the water outlet 10a of the upper housing 110 can make the water outlet direction substantially perpendicular to the moving plane of the underwater cleaning robot 1, so that the water outlet can provide a good thrust for the underwater cleaning robot 1, so that the underwater cleaning robot 1 is pressed against the bottom surface or side wall of the swimming pool. Not only can the reliability be ensured when climbing the wall (that is, moving on the side wall), but also it helps the underwater cleaning robot 1 to absorb water to improve the cleaning efficiency.

[0115] In addition, a drain port may be provided at the rear of the housing of the underwater cleaning robot 1. When the underwater cleaning robot 1 leaves the swimming pool, the liquid inside the underwater cleaning robot 1 may be drained through the drain port, thereby reducing the weight of the underwater cleaning robot 1 and making it easier for the user to lift the underwater cleaning robot 1 out of the water.

[0116] Optionally, the drain port is provided with a one-way valve. The one-way valve provided at the drain port can ensure the sealing of the drain port during the working process of the underwater cleaning robot 1, that is, when the water inlet sucks in the liquid and / or pollutants inside the swimming pool, to avoid the drain port interfering with the working process of the underwater cleaning robot 1.

[0117] In the embodiment of the present application, a sealed cabin is provided inside the cleaning body 10. The sealed cabin is formed by integrating two sealed shells. A static seal is adopted between the two sealed shells to prevent water.

[0118] At the same time, in order to ensure the reliability of the cleaning body 10 when it moves and to protect the parts that are powered on. If the transmission mechanism 40 does not include a drive motor, a drive motor can be set in the sealed cabin to drive the transmission mechanism 40. At this time, the output shaft of the drive motor extends from the sealed cabin to the outside of the cleaning body 10. A dynamic seal structure is used between the output shaft and the sealed cabin to ensure that water does not enter the sealed cabin. The output shaft passes through the housing and docks with the gear transmission structure in the transmission mechanism 40 for transmission.

[0119] In the embodiment of the present application, a driving wheel 210 is respectively provided on both sides of the cleaning body 10 in the width direction, and the two driving wheels 210 move relatively independently. If the two driving wheels 210 move in the same direction and at the same speed, the underwater cleaning robot 1 can move forward or backward. If the two driving wheels 210 move at different speeds or in different directions, the underwater cleaning robot 1 can turn.

[0120] In some embodiments of the present application, a crawler 220 is also provided on the driving wheel 210. In this embodiment, the first output shaft 411 in the transmission mechanism 40 passes through the sealing shell 430 and is connected to the driving wheel 210 of the underwater cleaning robot 1. The driving wheel 210 includes a second outer gear ring 211 arranged around the circumference of the outer wheel. In the embodiment of the present application, the driving wheel 210 is connected to the first output shaft 411, the first outer gear ring 410 is externally meshed with the roller brush gear 420 connected to the cleaning roller brush mechanism 30, and the second outer gear ring 211 is externally meshed with the crawler 220, so that when the driving motor drives the first outer gear ring 410 to rotate, the cleaning roller brush mechanism 30 is driven by the roller brush gear 420 to rotate relative to the cleaning body 10, and the crawler 220 is driven by the second outer gear ring 211 to drive the cleaning body 10 to move.

[0121] In the above specific implementation, the underwater cleaning robot 1 uses the driving motor 460 as a power source to provide power for the driving wheel 210 and the cleaning roller brush mechanism 30, so that the driving wheel 210 and the track 220 move, thereby driving the cleaning body 10 to move in the swimming pool. At the same time, during the movement of the cleaning body 10, the cleaning roller brush mechanism 30 can rotatably clean the pollutants on the bottom surface and side walls of the swimming pool, so as to achieve cleaning and purification of the swimming pool.

[0122] In addition, in certain embodiments of the present application, in order to tension the crawler 220, the driving mechanism 20 further includes a driven wheel 230, which is rotatably disposed on the cleaning body 10. The driven wheel 230 and the driving wheel 210 are located on the same side of the cleaning body 10 and are arranged at intervals. Among them, the driven wheel 230 includes a third outer gear ring 231, and the inner surface of the crawler 220 is provided with a plurality of matching teeth 221. When the crawler 220 is sleeved outside the driving wheel 210 and the driven wheel 230, the matching teeth 221 of the crawler 220 are respectively engaged with the second outer gear ring 211 and the third outer gear ring 231. In this way, the crawler 220 can be tensioned by the front and rear cooperation of the driving wheel 210 and the driven wheel 230, thereby ensuring the stability of the underwater cleaning robot 1 when moving.

[0123] Therefore, the driving method of the underwater cleaning robot 1 can be: through the rotation of the driving motor 460, the first outer gear ring 410 of the transmission mechanism 40 is driven to rotate, and the rotation of the first outer gear ring 410 drives the cleaning roller brush mechanism 30 meshing with the outside and the driving wheel 210 connected to the rotating shaft thereof to rotate, thereby realizing the cleaning of the swimming pool surface.

[0124] In this embodiment, the cleaning roller brush mechanism 30 is arranged at the front side of the cleaning body 10. The cleaning roller brush mechanism 30 may include a roller brush body 310. The roller brush body 310 may rotate relative to the cleaning body 10 to clean at least part of the surface of the swimming pool. The roller brush gear 420 is connected between the roller brush body 310 and the first outer gear ring 410 to transmit power to the roller brush body 310.

[0125] Optionally, the roller brush gear 420 may directly mesh with the outside of the first outer gear ring 410, so that the roller brush gear 420 rotates in the opposite direction relative to the driving wheel 210 when driven by the first outer gear ring 410. Alternatively, the transmission mechanism 40 may include a roller brush gear 420 and a transition gear 470, and the roller brush gear 420 meshes with the outside of the first outer gear ring 410 through the transition gear 470. As a feasible implementation, refer to Figure 7 and Figure 8 As shown, the transition gear 470 is disposed in the sealing shell 430, the transition gear 470 is connected between the roller brush gear 420 and the first outer gear ring 410, and the transition gear 470 is externally meshed with the roller brush gear 420 and the first outer gear ring 410 respectively. When the transmission mechanism 40 is in the installed state and the driving wheel 210 rotates, the transition gear 470 can be driven by the first outer gear ring 410, thereby driving the roller brush gear 420 to rotate in the same direction relative to the driving wheel 210. Among them, the transition gear 470 is externally meshed with the roller brush gear 420 and the first outer gear ring 410 respectively, so as to transmit the power of the first outer gear ring 410 to the roller brush gear 420, and make the rotation direction of the roller brush gear 420 the same as the rotation direction of the first outer gear ring 410, that is, rotate in the same direction as the driving wheel 210.

[0126] Therefore, when the driving wheel 210 rotates, the rotation direction of the roller brush gear 420 can be adjusted through the transition gear 470 to be consistent with the rotation direction of the second outer gear ring 211, and the rotation direction of the roller brush body 310 can be driven to be consistent with the forward direction of the underwater cleaning robot 1. In this way, by adjusting the rotation direction of the roller brush body 310, the pollutants in the swimming pool brushed by the roller brush body 310 can be pushed toward the water inlet of the cleaning body 10, so that the pollutants can be sucked in through the water inlet for cleaning and filtering, thereby further improving the cleaning efficiency of the underwater cleaning robot 1.

[0127] The underwater cleaning robot 1 provided in another embodiment of the present application filters the liquid and / or pollutants in the swimming pool through the cleaning body 10. The driving mechanism 20 is connected to the cleaning body 10 to drive the cleaning body 10 to move inside the swimming pool during the operation of the underwater cleaning robot 1. The driving mechanism 20 includes a driving wheel 210 assembly, and the transmission mechanism 40 includes a driving motor 460, and the driving motor 460 includes an output shaft and a driving gear 450 arranged on the output shaft. Of course, the transmission mechanism 40 may also not include the driving motor 460, that is, the driving motor 460 is arranged in other parts of the underwater cleaning robot 1. The driving wheel 210 assembly is rotatably arranged on the cleaning body 10, and the driving wheel 210 assembly at least includes the driving wheel 210. It can be understood that in other embodiments of the present application, the driving wheel 210 assembly may also include a track 220. Among them, the driving wheel 210 includes a second outer gear ring 211, the first outer gear ring 410 is externally meshed with the driving gear 450 of the driving motor 460, and the second outer gear ring 211 is externally meshed with the track 220; the roller brush gear 420 connected to the cleaning roller brush mechanism 30 is externally meshed with the first outer gear ring 410, and when the driving motor 460 drives the first outer gear ring 410 to rotate, the cleaning roller brush mechanism 30 is driven by the first outer gear ring 410 to rotate relative to the cleaning body 10, wherein the roller brush gear 420 and the first outer gear ring 410 are both arranged in the sealing shell 430 of the transmission mechanism 40.

[0128] In the above specific implementation, the drive motor 460 is used as a power source to provide power for the drive wheel 210 assembly and the cleaning roller brush mechanism 30, so that the drive wheel 210 and the track 220 of the drive wheel 210 assembly move, thereby driving the cleaning body 10 to move in the swimming pool. During the movement of the cleaning body 10, the cleaning roller brush mechanism 30 can rotate to clean the pollutants on the surface of the swimming pool to achieve cleaning and purification of the swimming pool.

[0129] The transmission mechanism 40 may include a driving gear 450 connected to the output shaft of the driving motor 460, and the driving gear 450 is arranged in the sealing shell 430 of the transmission mechanism 40. The driving method of the underwater cleaning robot 1 is specifically as follows: the driving motor 460 drives the driving gear 450 to rotate, and the rotation of the driving gear 450 drives the first outer gear ring 410 meshing with the driving gear 450 to rotate, and the rotation of the first outer gear ring 410 drives the roller brush gear 420 meshing with the outside and the driving wheel 210 connected thereto to rotate, and the cleaning roller brush mechanism 30 is driven to rotate through the roller brush gear 420, so as to achieve the cleaning of the surface of the swimming pool.

[0130] When the driving wheel 210 is driven by the first outer gear ring 410 , it drives the second outer gear ring 211 to transfer power to the outside, thereby driving the crawler belt 220 meshing with the driving wheel 210 to realize the movement of the underwater cleaning robot 1 .

[0131] Since the driving gear 450 and the first outer gear ring 410 are externally meshed, and the roller brush gear 420 and the first outer gear ring 410 are also externally meshed, the external meshing configuration can make assembly simpler and more convenient, and can reduce the requirements for processing accuracy, thereby reducing processing costs.

[0132] In addition, the underwater cleaning robot 1 drives the second outer gear ring 211 of the driving wheel 210 to rotate to achieve movement through the first outer gear ring 410 and the driving gear 450 to externally mesh with each other, so that when the moving time is constant, the second outer gear ring 211 with a large diameter can be driven to rotate by the first outer gear ring 410 with a small diameter, so that the underwater cleaning robot 1 can move farther, thereby improving the moving efficiency of the underwater cleaning robot 1, thereby improving the cleaning efficiency. At the same time, since the cleaning roller brush mechanism 30 is externally meshed with the first outer gear ring 410 through the roller brush gear 420 to achieve rolling. If the rotation speed of the cleaning roller brush mechanism 30 is the same as the rotation speed of the cleaning roller brush mechanism 30 in the prior art, and thus the cleaning effect can be guaranteed to remain unchanged, if the moving time is the same, the cleaning roller brush mechanism 30 will move farther as the underwater cleaning robot 1 moves farther, thereby making the utilization rate of the cleaning roller brush mechanism 30 higher, thereby reducing the wear of the cleaning roller brush mechanism 30 to a certain extent, and improving the service life of the cleaning roller brush mechanism 30.

[0133] In some embodiments of the present application, the first outer gear ring 410 and the second outer gear ring 211 can be coaxially arranged, and the two can be connected by a first output shaft. When the driving motor 460 drives the first outer gear ring 410 to rotate through the driving gear 450, the second outer gear ring 211 rotates coaxially with the first outer gear ring 410 and at the same speed; the diameter of the first outer gear ring 410 is smaller than the diameter of the second outer gear ring 211, so that at the same speed, the second outer gear ring 211 has a longer circumference, and the cleaning body 10 is driven to move a longer distance, thereby improving the moving speed of the underwater cleaning robot 1. When the area of ​​the swimming pool remains unchanged, the speed of the underwater cleaning robot 1 increases, which means that the time required to clean the swimming pool once is reduced, that is, the cleaning efficiency is improved.

[0134] Furthermore, in order to ensure the efficiency of the external transmission of the active gear 450, in particular, the first transmission ratio between the active gear 450 and the first outer gear ring 410 is less than the first set value. Among them, the first transmission ratio refers to the ratio of the rotational speed of the input gear to the rotational speed of the output gear. Specifically in this example, the first transmission ratio can be the ratio between the rotational speed of the active gear 450 and the rotational speed of the first outer gear ring 410. It is not difficult to see from the definition of the first transmission ratio that since the rotational speed of the active gear 450 is related to the rotational speed of the drive motor 460, therefore, assuming that the rotational speed of the drive motor 460 remains unchanged, the higher the rotational speed of the first outer gear ring 410, the smaller the value of the first transmission ratio, that is, the faster the rotational speed of the first outer gear ring 410, the faster the moving speed of the cleaning body 10.

[0135] In one feasible method, the first setting value can be 2.5:1 (ie 5:2). This transmission ratio can ensure that the moving speed of the cleaning body 10 meets the requirements and does not move too slowly. It can also ensure that the cleaning effect is moderate and effective cleaning will not be caused by moving too fast.

[0136] In one example, the number of teeth of the driving gear 450 of the driving motor 460 ranges from 10 to 15, for example, 13, and the number of teeth of the first outer gear ring 410 ranges from 30 to 35, for example. Of course, in other examples, the first set value can be other values.

[0137] like Fig. 9In another embodiment of the present application, the gear assembly structure includes a first outer gear ring 410, a second gear segment 480 and a roller brush gear 420; the first outer gear ring 410, the second gear segment 480 and the roller brush gear 420 are arranged in the sealing shell 430, and the second gear segment 480 is externally meshed with the roller brush gear 420; the first output rotating shaft 411 is the rotating shaft of the first outer gear ring 410, and the second output rotating shaft 421 is the rotating shaft of the roller brush gear 420; when the transmission mechanism 40 is in the installation state of being installed on the underwater cleaning robot, and the first outer gear ring 410 and the second gear segment 480 rotate, the first outer gear ring 410 drives the driving wheel to rotate through the first output rotating shaft 411; the second gear segment 480 rotates through the roller brush gear 420 to drive the roller brush body 310 to rotate relative to the cleaning body of the underwater cleaning robot.

[0138] The first outer gear ring 410 and the second gear segment 480 can be indirectly driven by the drive motor through a transition component. For example, as shown in Figure 9, the first outer gear ring 410 and the second gear segment 480 are driven by a driving gear 450 connected to the output shaft of the drive motor 460. One of the first outer gear ring 410 and the second gear segment 480 can also be directly connected to the output shaft, and then the other of the first outer gear ring 410 and the second gear segment 480 is indirectly driven by the drive motor through a transition gear and other components. The specific gear combination structure can refer to the relevant technology and will not be repeated here.

[0139] In the embodiment of the present application, the gear combination structure includes a first outer gear ring 410, a second tooth segment 480 and a roller brush gear 420, and the second tooth segment 480 is externally meshed with the roller brush gear 420; when the transmission mechanism 40 is in an installed state on the underwater cleaning robot and the first outer gear ring 410 and the second tooth segment 480 rotate, the first outer gear ring 410 can drive the driving wheel to rotate through the first output shaft 411; the rotation of the second tooth segment 480 can drive the roller brush body 310 to rotate relative to the cleaning body of the underwater cleaning robot through the roller brush gear 420, so that the driving wheel can drive the underwater cleaning robot to move while using the rotation of the roller brush body 310 to perform cleaning synchronously.

[0140] The gear assembly structure also includes a driving motor 460 and a driving gear 450. The output shaft of the driving motor 460 passes through the sealing shell 430 and is connected to the driving gear 450. The driving gear 450 is respectively meshed with the first outer gear ring 410 and the second gear segment 480. When the transmission mechanism 40 is installed on the underwater cleaning robot, the driving gear 450 rotates to drive the first outer gear ring 410 and the second gear segment 480 to rotate. The first outer gear ring 410 rotates to drive the driving wheel to rotate, and the second gear segment 480 rotates to drive the roller brush gear 420 and the roller brush body 310 to rotate relative to the cleaning body.

[0141] In the embodiment of the present application, the second tooth segment 480 meshing with the driving gear 450 can be driven to rotate by rotating, so as to drive the roller brush gear 420 meshing with the roller brush to rotate, and the roller brush body can be driven to rotate, so as to clean the surface of the swimming pool. Since the driving gear 450 and the second tooth segment 480 are meshing with each other externally, and the roller brush gear 420 and the second tooth segment 480 are also meshing with each other externally, the external meshing configuration can make assembly simpler and more convenient, and can reduce the requirements for processing accuracy, thereby reducing processing costs.

[0142] like Fig. 9 As shown, in some optional embodiments, a shaft 434 is provided on the sealing shell 430, and the second tooth segment 480 is sleeved on the shaft 434. The second tooth segment 480 can be reliably supported and positioned by the shaft 434, and the shaft 434 can be provided with a fixing structure for limiting the second tooth segment 480 to prevent the second tooth segment 480 from falling off the shaft 434. A first bearing 442 is provided in the shaft 434, and the first output shaft passes through the first bearing 442 and is connected to the first outer gear ring 410, and the first outer gear ring 410 includes a first tooth segment 412. It should be understood that a certain space should be left at the end of the shaft 434 for transmission between the first tooth segment 412 and the driving gear 450.

[0143] The transmission mechanism 40 drives the driving wheel 210 to rotate to achieve movement through the first tooth segment 412 of the first outer gear ring 410 of the driving wheel 210 and the external meshing of the driving gear 450 of the driving motor 460, so that when the moving time is constant, the first outer gear ring 410 with a small diameter drives the driving wheel 210 with a large diameter to rotate, so that the underwater cleaning robot 1 can move farther, thereby improving the moving efficiency of the underwater cleaning robot 1, thereby improving the cleaning efficiency. At the same time, since the rolling of the roller brush body 310 can be achieved through the external meshing of the second tooth segment 480 and the roller brush gear 420, if the rotation speed of the roller brush body 310 is the same as that of the roller brush body in the prior art, and thus the cleaning effect can be guaranteed to remain unchanged, and if the moving time is the same, the roller brush body 310 of the embodiment of the present application becomes farther as the moving distance of the underwater cleaning robot 1 becomes farther, thereby making the utilization rate of the roller brush body 310 higher, thereby reducing the wear of the roller brush body 310 to a certain extent, and improving the service life of the roller brush body.

[0144] In one embodiment of the present application, the first tooth segment 412 and the second tooth segment 480 of the first outer gear ring 410 are sequentially arranged along the axial direction of the first output shaft, wherein the first tooth segment 412 and the second tooth segment 480 are preferably coaxially arranged. The diameter of the first tooth segment 412 can be, but is not limited to, smaller than the diameter of the second tooth segment 480.

[0145] The second tooth segment 480 is configured to be rotatable relative to the first tooth segment 412, and the roller brush gear 420 is externally meshed with the second tooth segment 480, and when the first tooth segment 412 of the first outer gear ring 410 rotates, the second tooth segment 480 and the first tooth segment 412 rotate in opposite directions to drive the roller brush gear 420 and the driving wheel 210 to rotate in the same direction.

[0146] In some optional embodiments, the gear combination structure also includes a transition gear 470, which is arranged in the sealed shell, and the transition gear 470 is externally meshed with the driving gear 450 and the first tooth segment 412 respectively, and the first tooth segment 412 is externally meshed with the driving gear 450 through the transition gear 470; when the driving gear 450 rotates, the transition gear 470 is driven by the driving gear 450 to drive the first tooth segment 412 to rotate, and then drives the driving wheel 210 and the roller brush gear 420 to rotate in the same direction through the first tooth segment 412.

[0147] In the embodiment of the present application, when the driving gear 450 drives the transition gear 470 and the second tooth segment 480 to rotate, the first tooth segment 412 can be driven to rotate through the transition gear 470, driving the driving wheel 210 to rotate, and the roller brush gear 420 can be driven to rotate through the second tooth segment 480. At this time, the second tooth segment 480 and the first tooth segment 412 rotate in opposite directions, so that the rotation direction of the roller brush gear 420 is adjusted to be consistent with the rotation direction of the driving wheel 210, so as to drive the roller brush body to rotate synchronously toward the water inlet, so as to facilitate the water inlet to suck in pollutants for a cleaning and filtering procedure.

[0148] In another specific implementation, the second outer gear ring 211 of the driving wheel 210 is coaxially arranged with the first outer gear ring 410 of the transmission mechanism 40, and the second outer gear ring 211 can rotate relative to the first outer gear ring 410. The diameter of the first outer gear ring 410 is smaller than the diameter of the second outer gear ring 211. By setting the second outer gear ring 211 to rotate relative to the first outer gear ring 410, the rotation speeds of the first outer gear ring 410 and the second outer gear ring 211 can be different, thereby further improving the rotation speed of the second outer gear ring 211 without changing the rotation speed of the first outer gear ring 410, so that the movement efficiency of the underwater cleaning robot 1 is higher.

[0149] For example, a speed adjustment structure may be provided between the first outer gear ring 410 and the driving wheel 210 or the second outer gear ring 211, so that the speeds of the first outer gear ring 410 and the second outer gear ring 211 are different. The speed adjustment structure may be a gear or a sprocket, a chain assembly, etc., as long as the speeds of the first outer gear ring 410 and the second outer gear ring 211 can be adjusted.

[0150] In addition, in this embodiment, the number of teeth and diameter of the transition gear 470, the roller brush gear 420 and the driving gear 450 of the driving mechanism 20 can be equal, that is, the number of teeth of the three can be 13 teeth and the diameter can be 203 mm. Of course, the number of teeth and diameter are only an example and are not limited thereto.

[0151] In a specific embodiment, the second transmission ratio between the driving gear 450 and the cleaning roller brush mechanism 30 can be 1:1. The second transmission ratio can be the ratio of the speed of the input gear to the speed of the output gear, that is, the ratio between the rotation speed of the driving gear 450 and the rotation speed of the cleaning roller brush mechanism 30 is the second transmission ratio, and the second transmission ratio can be adjusted by adjusting the transmission ratio of the driving gear 450 and the roller brush gear 420. The second transmission ratio is 1:1, which means that the rotation speed of the cleaning roller brush mechanism 30 can be higher to meet the cleaning requirements.

[0152] Of course, in other embodiments, the second transmission ratio may be other ratios, which is not limited thereto.

[0153] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0154] The above description is only an illustrative specific implementation of the embodiment of the present application, and is not intended to limit the scope of the embodiment of the present application. Any equivalent changes, modifications and combinations made by any technician in this field without departing from the concept and principle of the embodiment of the present application should fall within the scope of protection of the embodiment of the present application.

Claims

1. A transmission mechanism, characterized in that: For an underwater cleaning robot, the transmission mechanism comprises a gear assembly structure and a sealing shell, and at least a portion of the gear assembly structure is disposed in the sealing shell; When the transmission mechanism is in an installation state installed on the underwater cleaning robot: The first output shaft of the gear assembly structure passes through the sealing shell and is connected to the driving wheel of the underwater cleaning robot; the second output shaft of the gear assembly structure passes through the sealing shell and is connected to the roller brush body of the underwater cleaning robot; Through the gear transmission of the gear combination structure disposed in the sealing shell, while the driving wheel is driven, the roller brush body is driven to rotate relative to the cleaning body of the underwater cleaning robot.

2. The transmission mechanism according to claim 1, characterized in that: The gear assembly structure comprises a first outer gear ring and a roller brush gear; the first outer gear ring and the roller brush gear are arranged in the sealing shell, and the first outer gear ring is meshed with the outer side of the roller brush gear; The first output rotating shaft is the rotating shaft of the first outer gear ring, and the second output rotating shaft is the rotating shaft of the roller brush gear; When the transmission mechanism is in an installed state on the underwater cleaning robot and the first outer ring gear rotates, the first outer ring gear drives the driving wheel to rotate through the first output shaft; the roller brush gear is driven by the first outer ring gear to drive the roller brush body to rotate relative to the cleaning body of the underwater cleaning robot.

3. The transmission mechanism according to claim 2, characterized in that: The gear combination structure also includes a transition gear, which is arranged in the sealing shell. The transition gear is externally meshed with the roller brush gear and the first outer gear ring respectively. The roller brush gear is externally meshed with the first outer gear ring through the transition gear. When the transmission mechanism is in the installation state and the first outer gear ring rotates, the transition gear is driven by the first outer gear ring to drive the roller brush gear and the driving wheel to rotate in the same direction.

4. The transmission mechanism according to claim 2, characterized in that: The transmission mechanism further includes a driving motor, and the gear assembly structure further includes a driving gear; The sealing shell is provided with a third opening, the driving gear is provided in the sealing shell, and the driving gear is externally meshed with the first outer gear ring, and the driving motor is provided outside the sealing shell; The driving gear is connected to the output shaft of the driving motor through the third opening, and drives the first outer gear ring to rotate under the drive of the driving motor.

5. The transmission mechanism according to claim 1, characterized in that: The gear assembly structure comprises a first outer gear ring, a second gear segment and a roller brush gear; the first outer gear ring, the second gear segment and the roller brush gear are arranged in the sealing shell, and the second gear segment is meshed with the outside of the roller brush gear; The first output rotating shaft is the rotating shaft of the first outer gear ring, and the second output rotating shaft is the rotating shaft of the roller brush gear; When the transmission mechanism is in an installed state on the underwater cleaning robot and the first outer ring gear and the second tooth segment rotate, the first outer ring gear drives the driving wheel to rotate through the first output shaft; the rotation of the second tooth segment drives the roller brush body to rotate relative to the cleaning body of the underwater cleaning robot through the roller brush gear.

6. The transmission mechanism according to claim 5, characterized in that: The gear assembly structure further includes a driving motor and a driving gear, wherein the output shaft of the driving motor passes through the sealing shell and is connected to the driving gear; the driving gear is respectively meshed with the first outer gear ring and the second tooth segment; When the transmission mechanism is in an installed state on the underwater cleaning robot, the driving gear rotates to drive the first outer gear ring and the second tooth segment to rotate, the first outer gear ring rotates to drive the driving wheel to rotate, and the second tooth segment rotates to drive the roller brush gear and the roller brush body to rotate relative to the cleaning body.

7. The transmission mechanism according to claim 6, characterized in that: The sealing shell is provided with a third opening, and the driving gear is connected to the output shaft of the driving motor through the third opening, and drives the first outer gear ring to rotate under the drive of the driving motor.

8. The transmission mechanism according to claim 6, characterized in that: A shaft rod is arranged in the sealing shell, and the second tooth segment is sleeved on the shaft rod.

9. The transmission mechanism according to claim 8, characterized in that: The first outer gear ring and the second gear segment are sequentially arranged along the axial direction of the first output shaft.

10. The transmission mechanism according to claim 9, characterized in that: The first outer gear ring includes a first tooth segment, the second tooth segment is configured to rotate relative to the first tooth segment, the roller brush gear is externally meshed with the second tooth segment, and when the first tooth segment of the first outer gear ring rotates, the second tooth segment rotates in the opposite direction to the first tooth segment to drive the roller brush gear and the driving wheel to rotate in the same direction.

11. The transmission mechanism according to claim 10, characterized in that: The gear combination structure also includes a transition gear, which is arranged in the sealing shell. The transition gear is externally meshed with the driving gear and the first tooth segment respectively, and the first tooth segment is externally meshed with the driving gear through the transition gear; when the driving gear rotates, the transition gear is driven by the driving gear to drive the first tooth segment to rotate, and the driving wheel and the roller brush gear are driven to rotate in the same direction through the first tooth segment.

12. The transmission mechanism according to claim 2 or 5, characterized in that: The sealing shell is provided with a first opening and a second opening, the first output shaft is connected to the driving wheel through the first opening, and the second output shaft is connected to the roller brush body through the second opening.

13. The transmission mechanism according to claim 12, characterized in that: A first sealing structure is provided between the first outer gear ring and the first opening, and the first opening is dynamically sealed by the first sealing structure; and / or, A second sealing structure is provided between the roller brush gear and the second opening, and the second opening is dynamically sealed by the second sealing structure.

14. The transmission mechanism according to claim 13, characterized in that: The first sealing structure comprises a first oil seal ring, and the first oil seal ring is sleeved on the first output shaft; and / or the second sealing structure comprises a second oil seal ring, and the second oil seal ring is sleeved on the second output shaft.

15. The transmission mechanism according to claim 4 or 7, characterized in that: When the transmission mechanism is in the installation state, a third sealing structure is provided between the third opening and the drive motor, and the third opening is statically sealed by the third sealing structure.

16. The transmission mechanism according to claim 4 or 5, characterized in that: A first transmission ratio between the driving gear and the first outer gear ring is less than a first set value.

17. The transmission mechanism according to claim 1, characterized in that: The sealing shell comprises a bottom shell and an upper cover, wherein the bottom shell is connected to the upper cover, and a sealing ring is arranged between the bottom shell and the upper cover to form an accommodating space for accommodating the gear assembly structure.

18. The transmission mechanism according to claim 17, characterized in that: The upper cover includes a cover plate and a flange arranged along the edge of the cover plate, the flange is perpendicular to the cover plate, a sealing groove is arranged on the flange, the sealing ring is sleeved on the sealing groove, and the sealing ring is in contact with the inner side of the shell side wall of the bottom shell, wherein the shell side wall of the bottom shell is parallel to the flange.

19. The transmission mechanism according to any one of claims 1, characterized in that: When the transmission mechanism is in the installation state, the sealing shell is detachably arranged between the driving wheel and the cleaning body of the underwater cleaning robot.

20. An underwater cleaning robot, characterized in that: include: A cleaning body, comprising a water inlet and a water outlet separated from the water inlet; A driving wheel configured to rotate relative to the cleaning body; A cleaning roller brush mechanism, comprising a roller brush body; as well as The transmission mechanism according to any one of claims 1 to 19, wherein the transmission mechanism is arranged between the driving wheel and the cleaning body.

21. The underwater cleaning robot according to claim 20, characterized in that: The second transmission ratio between the driving gear and the cleaning roller brush mechanism is 1:

1.

22. The underwater cleaning robot according to claim 20, characterized in that: The water inlet is used to suck in liquid and / or pollutants in the swimming pool. The water inlet is located behind the cleaning roller brush mechanism in the traveling direction of the underwater cleaning robot.

23. The underwater cleaning robot according to claim 22, characterized in that: The rotation direction of the roller brush body is used to push the liquid and / or the pollutants toward the water inlet.

24. The underwater cleaning robot according to claim 20, characterized in that: It also includes a crawler track, and the driving wheel also has a second outer gear ring, the diameter of the first outer gear ring is smaller than the diameter of the second outer gear ring, and the first outer gear ring and the second outer gear ring are coaxially arranged, and the crawler track is sleeved on the driving wheel and meshes with the outside of the second outer gear ring.

25. The underwater cleaning robot according to claim 24, characterized in that: It also includes a driven wheel, which is arranged on the cleaning body with an interval with the driving wheel and can rotate relative to the cleaning body, the driven wheel includes a third outer gear ring, the inner surface of the track is provided with a plurality of matching teeth, the track is sleeved outside the driving wheel and the driven wheel, and the matching teeth are respectively meshed with the second outer gear ring and the third outer gear ring.

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