Transmission device and cleaning apparatus

Abstract

A transmission device and a cleaning apparatus (10). The transmission device comprises a swing arm (2) and a rotary cleaning unit (1). One end of the swing arm (2) is rotatably connected to a main body of the cleaning apparatus (10), and the other end of the swing arm is connected to the rotary cleaning unit (1). The swing arm (2) is used for driving the rotary cleaning unit (1) to move between a first position and a second position. The area, when the rotary cleaning unit (1) is located at the second position, of at least part of the rotary cleaning unit (1) located outside of a projection region of the cleaning apparatus (10) is larger than the area, when the rotary cleaning unit (1) is located at the first position, of at least part of the rotary cleaning unit (1) located outside of the projection region of the cleaning apparatus (10). When the rotary cleaning unit (1) moves from the first position to the second position, the direction of rotation of the swing arm (2) is the same as the direction of rotation of the rotary cleaning unit (1). By means of configuring the direction of rotation of the swing arm (2) to be the same as the direction of rotation of the rotary cleaning unit (1), torque generated by friction between the rotary cleaning unit (1) and a surface to be cleaned can become a force for aiding the retraction of the rotary cleaning unit (1), so that the rotary cleaning unit (1) can be easily retracted when coming into contact with an obstacle.

Description

Transmission device and cleaning equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311084862.2 filed on August 25, 2023. The contents of the above-mentioned Chinese patent application disclosure are hereby incorporated by reference in their entirety as part of this application. Technical Field

[0003] The present application belongs to the field of smart home technology, and specifically relates to a transmission device and a cleaning device. Background Art

[0004] With the iterative updates and development of technology, self-cleaning equipment has entered the lives of ordinary families and has gradually become popular.

[0005] Among the current self-cleaning devices, there is one that has the function of mopping the floor. However, the transmission structure in the current self-cleaning device is simple in design and single in function, and can only drive the mop to rotate for cleaning. As a result, the position of the mop is relatively fixed and is located below the housing. It is blocked by the housing in the horizontal direction. Due to the limitation of the housing, the current self-cleaning device cannot clean the surface to be cleaned in the corner, affecting the cleaning effect.

[0006] Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present application is to provide a transmission device and a cleaning device, wherein the transmission device can drive the rotating cleaning unit to move between a first position and a second position, so that the projection area of ​​the rotating cleaning unit can be increased when it extends out of the main body of the cleaning device, thereby improving the cleaning effect.

[0008] In order to solve the above problems, the present application provides, on one hand, a transmission device for use with a cleaning device, the transmission device comprising a swing arm and a rotating cleaning unit, one end of the swing arm being rotatably connected to a main body of the cleaning device, and the other end being connected to the rotating cleaning unit, the swing arm being used to drive the rotating cleaning unit to move between a first position and a second position;

[0009] In which, when the rotating cleaning unit is in the second position, the area of ​​at least part of the rotating cleaning unit located outside the projection area of ​​the cleaning device is larger than the area of ​​at least part of the rotating cleaning unit located outside the projection area of ​​the cleaning device when the rotating cleaning unit is in the first position, and when the rotating cleaning unit moves from the first position toward the second position, the rotation direction of the swing arm is the same as the rotation direction of the rotating cleaning unit.

[0010] Optionally, the rotation direction of the swing arm is the same as the rotation direction of the rotary cleaning unit, specifically:

[0011] The direction of rotation is clockwise.

[0012] Optionally, the rotation direction of the swing arm is the same as the rotation direction of the rotary cleaning unit, specifically:

[0013] The direction of rotation is counterclockwise.

[0014] Optionally, the transmission device also includes a first drive component and an elastic member, the elastic member is connected to the swing arm, and the first drive component is used to cooperate with the elastic member to rotate the swing arm to drive the rotating cleaning unit to move between the first position and the second position.

[0015] Optionally, the first end of the elastic member is connected to the swing arm, and the second end of the elastic member is fixedly arranged relative to the main body of the cleaning device.

[0016] Optionally, the transmission device further includes a first cam, which sets the swing arm away from one end of the rotating cleaning unit. During the movement of the rotating cleaning unit between the second position and the first position, the first driving assembly abuts against the protrusion of the first cam.

[0017] Optionally, the elastic member is a tension spring, a first end of the tension spring is connected to the first cam, and a second end of the tension spring is fixed relatively to the main body of the cleaning device;

[0018] Alternatively, the elastic member is a torsion spring, which is arranged at the rotating shaft of the first cam, with a first end of the torsion spring connected to the first cam and a second end of the torsion spring fixed relatively to the main body of the cleaning device;

[0019] Alternatively, the elastic member is an elastic sheet, a first end of the elastic sheet is connected to the first cam, and a second end of the elastic sheet is fixed relative to the main body of the cleaning device.

[0020] Optionally, the first end of the elastic member is connected to the first cam;

[0021] and / or

[0022] The first end of the elastic member is connected to the swing arm.

[0023] Optionally, a connecting portion is provided on a circumferential side of the first cam, and the elastic member is connected to the first cam via the connecting portion.

[0024] Optionally, when the first cam rotates in a first direction under the drive of the first driving assembly, the rotary cleaning unit moves from the second position toward the first position.

[0025] Optionally, when the first cam rotates in the second direction under the action of the elastic member, the rotary cleaning unit moves from the first position toward the second position.

[0026] Optionally, when the rotary cleaning unit moves from the second position toward the first position, the elastic member accumulates elastic potential energy under the drive of the first driving assembly.

[0027] Optionally, when the rotary cleaning unit moves from the first position toward the second position, the elastic potential energy of the elastic member is released.

[0028] Optionally, the first driving assembly includes a first driving portion and a second cam, the first driving portion is connected to the second cam to drive the second cam to rotate, and the second cam abuts against the first cam to drive the first cam to rotate.

[0029] Optionally, the second cam is provided on the output end of the first driving part, so that the first driving part drives the second cam to rotate;

[0030] or,

[0031] The output end of the first driving part is drivingly connected to the second cam.

[0032] Optionally, the second cam includes a sector-shaped tooth portion and an abutment portion, the first driving portion is engaged with the sector-shaped tooth portion, the abutment portion abuts against the first cam, and the first cam is coaxially arranged with the swing arm.

[0033] Optionally, the first driving part includes a telescopic driving member and a transmission gear, the telescopic driving member is connected to the transmission gear, and the transmission gear is engaged with the sector-shaped tooth portion, so that the telescopic driving member drives the abutment portion to push the first cam to rotate through the transmission gear and the sector-shaped tooth portion, and drives the rotating cleaning unit to move from the second position to the first position through the synchronous rotation of the swing arm.

[0034] Optionally, when the rotary cleaning unit is in the second position, the second cam is separated from the first cam.

[0035] Optionally, a wear-resistant layer is provided on the outer walls of the first cam and the second cam.

[0036] Optionally, a roller is provided on the second cam, and the second cam abuts against the first cam through the roller.

[0037] Another aspect of the present application provides a cleaning device comprising the transmission device described above.

[0038] Optionally, the cleaning device includes a first shell, the telescopic drive member and the swing arm are located outside the first shell, the transmission gear, the second cam, the first cam and the elastic member are located inside the first shell, the transmission gear passes through the first shell and is dynamically connected to the telescopic drive member, one end of the elastic member is connected to the first shell, and the other end is connected to the first cam.

[0039] Optionally, the cleaning device further includes:

[0040] A position detection device is provided in the first housing and is used to detect the rotation position of the second cam. The telescopic driving member rotates or stops rotating according to the detection result of the position detection device.

[0041] Optionally, the position detection device includes a first photoelectric switch and a second photoelectric switch distributed on both sides of the second cam, and the second cam also includes a first baffle and a second baffle distributed on both sides of the abutting portion, the first baffle is suitable for being inserted into the first photoelectric switch so that the first photoelectric switch changes the detection signal, and the second baffle is suitable for being inserted into the second photoelectric switch so that the second photoelectric switch changes the detection signal.

[0042] Optionally, the cleaning device further includes:

[0043] The rotation angle detection device is provided on the telescopic driving member and is used to detect the rotation angle of the output shaft of the telescopic driving member. The telescopic driving member also rotates or stops rotating according to the detection result of the rotation angle detection device.

[0044] Optionally, a first limiting member and a second limiting member are provided on the circumferential side of the first cam, the first limiting member is located on the side of the protrusion away from the abutting portion, and the first limiting member is used to abut against the protrusion to limit the rotation of the first cam, and the second limiting member is located on the side of the connecting portion away from the abutting portion, and the second limiting member is used to abut against the connecting portion to limit the rotation of the first cam.

[0045] Optionally, the cleaning device further includes a second driving assembly, which is connected to the rotating cleaning unit and is used to drive the rotating cleaning unit to rise and fall.

[0046] Optionally, the second driving assembly is further used to drive the rotary cleaning unit to vibrate and / or rotate with its own central axis as the rotation center.

[0047] Optionally, the second driving component includes:

[0048] A lifting drive unit and a connecting device, at least a portion of the connecting device is arranged in the swing arm and connected to the rotating cleaning unit, and the lifting drive unit drives the rotating cleaning unit to lift and rotate through the connecting device.

[0049] Optionally, the connecting device includes:

[0050] A worm, a gear set, and a sleeve are connected in a power manner, wherein the worm is connected in power to the lifting drive unit, the gear set is arranged in the swing arm, the sleeve is connected to the rotary cleaning unit, and the worm drives the sleeve to lift and rotate through the gear set to drive the rotary cleaning unit to lift and rotate.

[0051] Optionally, the gear set includes:

[0052] A turbine, a first sub-gear, a second sub-gear, a third sub-gear and a connecting cylinder;

[0053] In which, the turbine and the first sub-gear are coaxially arranged, the turbine is located outside the swing arm and meshes with the worm, the first sub-gear, the second sub-gear, and the third sub-gear are all located inside the swing arm, the second sub-gear includes a first gear plate and a second gear plate coaxially arranged, the first sub-gear is meshed with the first gear plate, the second gear plate is coaxially arranged on the first gear plate and meshes with the third sub-gear, the connecting tube is coaxially arranged with the third sub-gear and is located outside the swing arm, the connecting tube is threadedly connected to the sleeve, and the gear set rotates to make the sleeve and the connecting tube rotate relative to each other, so as to drive the sleeve to rise or fall relative to the connecting tube.

[0054] Optionally, the wall of the connecting tube is provided with a guide portion arranged in a spiral direction;

[0055] The sleeve wall is provided with a slot for accommodating the connecting tube, and the slot wall is provided with a spiral guide groove for accommodating the guide portion;

[0056] Wherein, the guide portion is a spiral boss or a plurality of protrusions distributed at intervals.

[0057] Optionally, a retaining rib is provided on the slot wall near the opening, and the retaining rib is used to abut against the guide portion to limit the lifting movement of the sleeve relative to the connecting tube;

[0058] The guide portion abuts against the bottom of the slot to limit the lifting movement of the sleeve relative to the connecting tube.

[0059] Optionally, the inner wall of the sleeve is provided with a limiting plane matching the rotary cleaning unit;

[0060] Wherein, the axial cross-section of the sleeve is hexagonal.

[0061] Optionally, the second drive assembly also includes a second shell with an opening at one end. When the cleaning device includes the first shell, the second shell is engaged with the first shell, and the worm, the turbine, the swing arm and the connecting cylinder are located in the space enclosed by the second shell and the first shell. The opening of the second shell is located on the side away from the first shell, and the bottom end of the sleeve is suitable for extending out of the opening of the second shell. The lifting drive part is located outside the second shell, and the worm is passed through the second shell and connected to the lifting drive part.

[0062] Optionally, the second housing is divided into a first mounting cavity and a second mounting cavity, the turbine is located in the first mounting cavity, the sleeve is located in the second mounting cavity, the swing arm extends to the first mounting cavity and the second mounting cavity, and the shape of the second mounting cavity is adapted to the movement space of the swing arm;

[0063] The second housing further includes a bottom plate, which is detachably connected to a cavity wall of the first installation cavity to enclose the turbine in the first installation cavity. Beneficial effects

[0064] Embodiments of the present invention provide a transmission device and a cleaning device. A swing arm is provided with one end rotatably connected to a main body of the cleaning device and the other end connected to a rotary cleaning unit, so that the cleaning device using the transmission device has a mopping tray retractable function. The swing arm can be used to drive the rotary cleaning unit to switch between a first position and a second position according to cleaning range requirements, so as to move the rotary cleaning unit to an operating position that meets the corresponding cleaning range requirements. This satisfies the requirements of different mopping ranges, expands the mopping range, and helps improve the cleaning effect and the user's cleaning experience. Furthermore, when the rotary cleaning unit moves from the first position to the second position, the swing arm rotates in the same direction as the rotary cleaning unit, so that the torque generated by the friction between the rotary cleaning unit and the surface to be cleaned serves as an aid for retracting the rotary cleaning unit. Furthermore, when the cleaning unit rotates, friction is generated when it collides with a wall, and the torque generated by this friction also serves as an aid for retracting the rotary cleaning unit. This allows the rotary cleaning unit to be easily and passively retracted when it contacts an obstacle, thereby avoiding the passive change of the cleaning device's posture when the rotary cleaning unit is blocked by an obstacle. This allows the cleaning device to clean closely around the boundary of an obstacle, enabling the cleaning device to operate in complex environments and improving the applicability of the cleaning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] FIG1 is a schematic structural diagram of a cleaning device according to an optional embodiment of the present application when a rotary cleaning unit is located in a second position;

[0066] FIG2 is a schematic structural diagram of a cleaning device according to an optional embodiment of the present application when a rotating cleaning unit moves from a first position toward a second position;

[0067] FIG3 is a schematic structural diagram of a swing arm of an optional embodiment of the present application when a rotary cleaning unit is located in a first position;

[0068] FIG4 is a schematic structural diagram of a first driving assembly when a rotary cleaning unit is located in a first position according to an optional embodiment of the present application;

[0069] FIG5 is a schematic structural diagram of a first driving assembly when a rotary cleaning unit is located in a second position according to an optional embodiment of the present application;

[0070] FIG6 is a schematic structural diagram showing another perspective of the embodiment shown in FIG5 ;

[0071] FIG7 is a schematic structural diagram showing another perspective of the embodiment shown in FIG5 ;

[0072] FIG8 shows a cross-sectional view taken along the AA direction of the embodiment shown in FIG7 ;

[0073] FIG9 is a schematic structural diagram of a second driving assembly of a rotary cleaning unit according to an optional embodiment of the present application;

[0074] FIG10 is a schematic structural diagram showing another perspective of the embodiment shown in FIG4 ;

[0075] FIG11 is a schematic structural diagram of a second housing according to an optional embodiment of the present application;

[0076] FIG12 is a schematic structural diagram showing another perspective of the embodiment shown in FIG11 ;

[0077] FIG13 is a schematic structural diagram of a case where a roller is provided on the abutting portion according to an optional embodiment of the present disclosure.

[0078] The accompanying drawings are denoted by the following numerals: 1. Rotating cleaning unit; 2. Swing arm; 3. First driving assembly; 31. Telescopic driving member; 32. Transmission gear; 33. Second cam; 331. Sector tooth portion; 332. Abutting portion; 333. First baffle; 334. Second baffle; 335. Roller; 4. Elastic member; 5. First cam; 51. Connecting portion; 52. Protruding portion; 6. First shell; 7. Position detecting device; 71. First photoelectric switch; 72. Second photoelectric switch; 8. First limiting member; 9. Second limiting member; 10. Cleaning device; 11. Second driving assembly; 111. Lifting driving portion; 112. Connecting device; 11 21. Worm; 1122. Gear set; 11221. Turbine; 11222. First sub-gear; 11223. First toothed disc; 11224. Second toothed disc; 11225. Third sub-gear; 11226. Connecting tube; 11227. Guide portion; 1123. Sleeve; 11231. Slot; 11232. Guide groove; 11233. Limiting plane; 113. Second housing; 1131. First mounting cavity; 1132. Second mounting cavity; 1133. Bottom plate. DETAILED DESCRIPTION

[0079] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0081] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0082] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0083] 1 to 13 , according to one aspect of an embodiment of the present application, a transmission device is provided, which is applied to a cleaning device 10. The transmission device includes a swing arm 2 and a rotary cleaning unit 1. One end of the swing arm 2 is rotatably connected to the main body of the cleaning device 10, and the other end is connected to the rotary cleaning unit 1. The swing arm 2 is used to drive the rotary cleaning unit 1 to move between a first position and a second position.

[0084] In which, when the rotating cleaning unit 1 is in the second position, the area of ​​at least part of the rotating cleaning unit 1 located outside the projection area of ​​the cleaning device 10 is larger than the area of ​​at least part of the rotating cleaning unit 1 located outside the projection area of ​​the cleaning device 10 when the rotating cleaning unit 1 is in the first position. When the rotating cleaning unit 1 moves from the first position toward the second position, the rotation direction of the swing arm 2 is the same as the rotation direction of the rotating cleaning unit 1.

[0085] By setting one end of the swing arm 2 to be rotatably connected to the main body of the cleaning device 10, and the other end to be connected to the rotary cleaning unit 1, the cleaning device 10 using the above-mentioned transmission device has a drag tray retractable function. The swing arm 2 can be used to drive the rotary cleaning unit 1 to switch between the first position and the second position according to the cleaning range requirements, so as to move the rotary cleaning unit 1 to an operating position that meets the corresponding cleaning range requirements, thereby meeting the requirements of different mopping ranges, expanding the mopping range, and helping to improve the cleaning effect, thereby improving the user's cleaning experience; at the same time, when the rotary cleaning unit 1 moves from the first position to the second position, the rotation direction of the swing arm 2 is the same as the rotation direction of the rotary cleaning unit 1, so that the torque generated by the friction between the rotary cleaning unit 1 and the surface to be cleaned can become a boost for the retraction of the rotary cleaning unit 1, so that the rotary cleaning unit 1 can be easily passively retracted when it contacts an obstacle, thereby avoiding the passive change of the posture of the cleaning device 10 when the rotary cleaning unit 1 is blocked by an obstacle, and the cleaning device 10 can be cleaned close to the boundary of the obstacle, so that the cleaning device 10 can work in a complex environment, thereby improving the applicability of the cleaning device 10.

[0086] Among them, the transmission device can be applied to a sweeping robot or other cleaning equipment.

[0087] The transmission device includes a swing arm 2, which is roughly in the shape of a long strip.

[0088] The transmission device further includes a rotating cleaning unit 1 , which may be a circular drag plate. The rotating cleaning unit 1 is connected to the cleaning device 10 via a swing arm 2 .

[0089] Specifically, the swing arm 2 is arranged on the side of the cleaning device 10 close to the surface to be cleaned. One end of the swing arm 2 is rotatably connected to the cleaning device 10, and the other end is connected to the rotary cleaning unit 1. The swing arm 2 can rotate with the connection point between the swing arm 2 and the cleaning device 10 as the rotation center to drive the rotary cleaning unit 1 to move, so as to adjust the cleaning position of the rotary cleaning unit 1.

[0090] The moving position of the rotary cleaning unit 1 includes a first position and a second position.

[0091] Specifically, as an embodiment, when the rotary cleaning unit 1 is located in the first position, the rotary cleaning unit 1 is located within the outer edge projection area of ​​the cleaning device 10, and when the rotary cleaning unit 1 is located in the second position, at least part of the rotary cleaning unit 1 is located outside the outer edge projection area of ​​the cleaning device 10; as another embodiment, when the rotary cleaning unit 1 is located in the first position or the second position, at least part of the rotary cleaning unit 1 is located outside the outer edge projection area of ​​the cleaning device 10, but the area of ​​at least part of the rotary cleaning unit 1 located outside the projection area of ​​the cleaning device 10 when the rotary cleaning unit 1 is located in the second position is larger than the area of ​​at least part of the rotary cleaning unit 1 located outside the projection area of ​​the cleaning device 10 when the rotary cleaning unit 1 is located in the first position.

[0092] Among them, it can be understood that when the swing arm 2 drives the rotating cleaning unit 1 to move from the first position to the second position, the area of ​​the outer edge projection area of ​​the rotating cleaning unit 1 extending out of the cleaning device 10 increases. At this time, the rotating cleaning unit 1 can clean the dead corners on the surface to be cleaned.

[0093] Specifically, the rotary cleaning unit 1 can be a self-rotating cleaning element, a vibrating cleaning element, or a fixed cleaning element. In the embodiment of the present application, the rotary cleaning unit 1 can be a tray, and the rotary cleaning unit 1 removes stains on the surface to be cleaned by rotating.

[0094] Among them, the surface to be cleaned can be the bedroom floor, etc. In this application, one end of the swing arm 2 is rotatably connected to the main body of the cleaning device 10, and the other end is connected to the rotating cleaning unit 1, so that the cleaning device 10 using the above-mentioned transmission device has a tray telescopic function, which can enable the rotating cleaning unit 1 to be extended to clean the dead corners of the bedroom floor.

[0095] In a specific application, when the rotary cleaning unit 1 moves from the first position to the second position, the rotation direction of the swing arm 2 is the same as the rotation direction of the rotary cleaning unit 1, so that the torque generated by the friction between the rotary cleaning unit 1 and the surface to be cleaned becomes a power to retract the rotary cleaning unit 1, and the rotary cleaning unit 1 can be easily and passively retracted when it contacts an obstacle, thereby avoiding the passive change of the posture of the cleaning device 10 when the rotary cleaning unit 1 is blocked by an obstacle, and the cleaning device 10 can be cleaned close to the boundary of the obstacle, so that the cleaning device 10 can complete the cleaning work in a complex environment, thereby improving the applicability of the cleaning device 10.

[0096] In the above embodiment, as an implementation method, when the swing arm 2 rotates clockwise, the rotary cleaning unit 1 moves from the first position toward the second position. At this time, the rotary cleaning unit 1 rotates in the same direction as the swing arm 2, that is, the rotary cleaning unit 1 also rotates in the clockwise direction. It can be understood that when the rotary cleaning unit 1 is retracted, the swing arm 2 needs to rotate in the counterclockwise direction. Since the rotation direction of the rotary cleaning unit 1 is clockwise, the rotary cleaning unit 1 is in contact with the surface to be cleaned and is subjected to a counterclockwise friction force to generate a torque in the same direction as the rotation direction of the swing arm 2 when the rotary cleaning unit 1 is retracted, thereby reducing the load on the swing arm 2, making the rotary cleaning unit 1 easier to retract, and improving the stability of the cleaning device 10. As another implementation method, as shown in Figure 2, when the swing arm 2 rotates counterclockwise, the rotary cleaning unit 1 moves from the first position toward the second position. At this time, the rotary cleaning unit 1 rotates in the same direction as the swing arm 2, that is, the rotary cleaning unit 1 also rotates in the counterclockwise direction. It can be understood that when the rotary cleaning unit 1 is retracted, the swing arm 2 needs to rotate in the clockwise direction. Since the rotation direction of the rotary cleaning unit 1 is counterclockwise, the rotary cleaning unit 1 is in contact with the surface to be cleaned and is subjected to clockwise friction to generate a torque in the same direction as the rotation direction of the swing arm 2 when the rotary cleaning unit 1 is retracted, thereby reducing the load on the swing arm 2, making the rotary cleaning unit 1 easier to retract, and improving the stability of the cleaning equipment 10.

[0097] Specifically, when the rotating cleaning unit 1 contacts an obstacle, since the rotation direction of the rotating cleaning unit 1 is the same as the rotation direction when the swing arm 2 is extended, the combined force direction of the reaction force provided by the obstacle and the friction force between the rotating cleaning unit 1 and the surface to be cleaned is the same as the rotation direction of the retracted swing arm 2, thereby reducing the load on the swing arm 2, so that the rotating cleaning unit 1 can be easily and passively retracted when encountering an obstacle, and at the same time, it can avoid the rotating cleaning unit 1 being bounced off by the obstacle, and the cleaning device 10 can clean along the edge of the obstacle, so that the cleaning device 10 can complete the cleaning work in a complex environment, thereby improving the applicability of the cleaning device 10.

[0098] When the rotary cleaning unit 1 contacts an obstacle, the reaction force provided by the obstacle to the rotary cleaning unit 1 includes the support force of the obstacle on the rotary cleaning unit 1 and the friction force between the obstacle and the rotary cleaning unit 1 .

[0099] Among them, the swing arm 2 can be rotated by a motor. When the swing arm 2 and the rotary cleaning unit 1 have the same rotation direction, when the motor drives the swing arm 2 to rotate to retract the rotary cleaning unit 1, the torque generated by the friction between the rotary cleaning unit 1 and the surface to be cleaned and the reaction force provided by the obstacle is an assist, so as to reduce the load overcome by the motor, improve the stability of the motor's operation, and extend the service life of the motor.

[0100] Specifically, when the cleaning device 10 is running, the rotating cleaning unit 1 can be easily retracted when it comes into contact with an obstacle. At this time, the support force of the obstacle on the rotating cleaning unit 1 and the torque generated by the friction force, as well as the torque generated by the friction between the rotating cleaning unit 1 and the surface to be cleaned, all assist the operation of the motor to avoid the rotating cleaning unit 1 being subjected to resistance and causing motor overcurrent, thereby improving the mechanical properties of the motor and rotating parts and extending their service life; at the same time, the rotating cleaning unit 1 can be easily passively retracted when encountering an obstacle, which can avoid the rotating cleaning unit 1 being blocked by an obstacle, resulting in the passive change of the posture of the entire cleaning device 10. For example, when the cleaning device 10 turns along a wall, it can avoid the cleaning device 10 being pushed away by the wall. At the same time, the rotating cleaning unit 1 is passively retracted, and there is no need for the motor to frequently and actively drive the swing arm 2 to rotate, thereby improving the mechanical properties and service life of the motor and related transmission parts, thereby reducing costs.

[0101] In some possible embodiments provided by the present disclosure, the transmission device also includes a first drive component 3, which can be connected to the swing arm 2 to drive the swing arm 2 to rotate, thereby driving the rotary cleaning unit 1 to move between the first position and the second position. Since the surface to be cleaned is usually a planar structure, when the rotary cleaning unit 1 is in the first position or the second position to mop the surface to be cleaned, the rotary cleaning unit 1 can still perform the mopping operation when the first drive component 3 is used to drive the rotary cleaning unit 1 to move to the second position or the first position accordingly. There is no need to stop the cleaning operation and then switch the operating position, and it can ensure that the rotary cleaning unit 1 can reliably contact the surface to be cleaned after switching the operating position, so as to ensure a good cleaning effect, while simplifying the control program and improving the cleaning efficiency.

[0102] Specifically, at least part of the rotating cleaning unit 1 in the second position is located outside the edge projection area of ​​the cleaning device 10, so that the cleaning range of the rotating cleaning unit 1 in the second position can exceed the edge of the walking range of the cleaning device 10, thereby achieving comprehensive cleaning of the corner positions that the cleaning device 10 cannot fit, so as to increase the cleaning range of the rotating cleaning unit 1, thereby improving the cleaning effect of the cleaning device 10.

[0103] The rotating cleaning unit 1 in the second position may be entirely located outside the edge projection area of ​​the cleaning device 10 or partially located outside the edge projection area of ​​the cleaning device 10 , which may be set according to the specific structure.

[0104] Among them, the rotating cleaning unit 1 in the first position can be located within the edge projection area of ​​the cleaning device 10, so that the cleaning range of the rotating cleaning unit 1 in the first position can be located within the walking range of the cleaning device 10, thereby, the area within the walking range of the cleaning device 10 can be mopped, thereby reducing the possibility of the rotating cleaning unit 1 protruding from the cleaning device 10 and colliding with obstacles, which is beneficial to improving the service life and reliability of the rotating cleaning unit 1.

[0105] Among them, the rotary cleaning unit 1 can be selectively driven to switch between the first position and the second position according to whether it is necessary to mop the corners, such as moving the rotary cleaning unit 1 to the first position for conventional wet cleaning operations, and moving the rotary cleaning unit 1 to the second position for wet cleaning operations of corners, thereby meeting the different functional requirements of the cleaning device 10 and improving the intelligence of the cleaning device 10.

[0106] In some possible embodiments provided by the present disclosure, during the switching process of the rotary cleaning unit 1 between the first position and the second position, the first drive component 3 abuts against the swing arm 2 to rotate the swing arm 2, thereby ensuring that the swing arm 2 is stably driven to rotate, thereby ensuring that the rotary cleaning unit 1 can stably switch between the first position and the second position.

[0107] The first driving component 3 can directly contact the swing arm 2 , and the swing arm 2 can be directly driven to rotate by the rotation of the first driving component 3 .

[0108] Specifically, the first drive assembly 3 may include a cam or other eccentric rotating mechanism, which abuts against the outer wall of the swing arm 2 and directly drives the swing arm 2 to rotate by driving the cam or other eccentric rotating mechanism to rotate.

[0109] In some possible embodiments provided by the present disclosure, one end of the swing arm 2 is connected to the first cam 5, and the other end is connected to the rotary cleaning unit 1. During the switching process of the rotary cleaning unit 1 between the first position and the second position, the first drive component 3 abuts against the protrusion 52 of the first cam 5 to rotate the swing arm 2.

[0110] In some possible embodiments provided herein, the first drive assembly 3 includes a telescopic drive member 31 and a second cam 33. The telescopic drive member 31 is connected to the second cam 33 to drive the second cam 33 to rotate, and the second cam 33 abuts the first cam 5. The first drive assembly 3 also includes a transmission gear 32, which is sleeved on the output end of the telescopic drive member 31 and meshes with the second cam 33.

[0111] Among them, the second cam 33 includes a sector tooth portion 331 and an abutment portion 332. The transmission gear 32 is power-connected to the telescopic drive member 31 and meshes with the sector tooth portion 331. The abutment portion 332 abuts against the first cam 5. The first cam 5 is coaxially arranged with the swing arm 2.

[0112] The sector teeth 331 and the abutment 332 are spaced apart and distributed around the circumference of the rotating shaft of the second cam 33, so that the rotation of the second cam 33 can simultaneously drive the sector teeth 331 and the abutment 332 to rotate. Thus, the telescopic drive member 31 rotates in one direction (e.g., clockwise or counterclockwise) to drive the transmission gear 32 to rotate. Since the sector teeth 331 and the transmission gear 32 are meshed, the sector teeth 331 can drive the second cam 33 to rotate, thereby driving the abutment 332 to rotate. The abutment 332 abuts against the first cam 5, pushing the first cam 5 to rotate. Since the first cam 5 is coaxially arranged with the swing arm 2, the swing arm 2 can rotate synchronously with the first cam 5, thereby driving the rotary cleaning unit 1 installed in the swing arm 2 to move from the second position to the first position.

[0113] In the above embodiment, the transmission device further includes an elastic member 4, one end of which is connected to the swing arm 2 and the other end is fixedly connected to the main body of the cleaning device 10. Under the action of the elastic member 4, the first drive assembly 3 drives the rotary cleaning unit 1 to move between the first position and the second position via the swing arm 2. When the rotary cleaning unit 1 moves from the second position toward the first position, the elastic member 4 accumulates elastic potential energy under the drive of the first drive assembly 3. When the rotary cleaning unit 1 moves from the first position toward the second position, the elastic potential energy of the elastic member 4 is released. When the telescopic driving member 31 rotates in another direction (such as counterclockwise or clockwise) to drive the transmission gear 32 to rotate, the sector tooth portion 331 and the transmission gear 32 are engaged, and the sector tooth portion 331 can drive the second cam 33 to rotate, thereby driving the abutment portion 332 to rotate. It can be understood that at this time, the rotation direction of the abutment portion 332 is opposite to the rotation direction of the abutment portion 332 during the movement of the rotating cleaning unit 1 toward the direction of retracting the main body of the cleaning device 10. At this time, under the action of the elastic member 4, the first cam 5 will rotate in the opposite direction relative to the first cam 5 during the movement of the rotating cleaning unit 1 toward the direction of retracting the main body of the cleaning device 10. Since the first cam 5 is coaxially arranged with the swing arm 2, the swing arm 2 can rotate synchronously with the first cam 5, thereby driving the rotary cleaning unit 1 installed in the swing arm 2 to move from the first position to the second position.

[0114] Therefore, by cooperating with the telescopic driving member 31, the transmission gear 32, the second cam 33, the first cam 5 and the elastic member 4, the swing arm 2 can be rotated in different directions, thereby realizing the switching operation of the rotary cleaning unit 1 between the first position and the second position. The structure is simple and the operation is convenient.

[0115] Specifically, in the embodiment of the present application, when the rotary cleaning unit 1 is in the first position, the first cam 5 abuts against the second cam 33, and the elastic member 4 is in a stretched state; when the rotary cleaning unit 1 is in the second position, the first cam 5 is separated from the second cam 33, and the elastic member 4 returns to its original state.

[0116] In the above embodiment, the circumferential side of the first cam 5 is provided with a protrusion 52 and a connecting portion 51 . The connecting portion 51 is used to connect with the elastic member 4 . The abutting portion 332 is located between the protrusion 52 and the connecting portion 51 and is used to abut against the protrusion 52 .

[0117] The protrusions 52 and the connecting portion 51 are spaced apart around the circumference of the first cam 5, so that rotation of the protrusion 52 can drive the first cam 5 and the connecting portion 51 to rotate synchronously. The abutment 332 of the second cam 33 is disposed between the protrusion 52 and the connecting portion 51. This allows the second cam 33 to move in one direction (e.g., clockwise or counterclockwise) so that the abutment 332 can smoothly abut against the protrusion 52, thereby pushing the first cam 5 to rotate, thereby driving the swing arm 2 to drive the rotary cleaning unit 1 to move toward the first position. Simultaneously, when the second cam 33 moves in another direction (e.g., counterclockwise or clockwise), the abutment 332 moves in the opposite direction, canceling the pushing force on the protrusion 52, and the first cam 5 separates from the second cam 33. At this time, under the action of the elastic member 4, the first cam 5 is subjected to the elastic force of the elastic member 4 to return to its original state, i.e., the elastic member 4 can pull the first cam 5 to rotate, thereby driving the swing arm 2 to drive the rotary cleaning unit 1 to move toward the second position.

[0118] It can be understood that the first end of the elastic member 4 is connected to the first cam 5, the first end of the elastic member 4 can also be connected to the swing arm 2, and the first end of the elastic member 4 can also be connected to the first cam 5 and the swing arm 2 at the same time.

[0119] In this embodiment, the elastic member 4 is a tension spring. One end of the elastic member 4 can be directly or indirectly fixedly connected to the main body of the cleaning device 10, that is, it can be relatively stationary with the main body of the cleaning device 10. The other end can be connected to the first cam 5 alone, to the swing arm 2, or to both the first cam 5 and the swing arm 2. For example, if the elastic member 4 has a Y-shaped structure, it can be connected to both the first cam 5 and the swing arm 2. Of course, it can also be connected to both the first cam 5 and the swing arm 2 simultaneously through a connecting portion 51 such as a connecting wire.

[0120] In some possible embodiments provided by the present disclosure, the elastic member 4 is a tension spring, a first end of the tension spring is connected to the protrusion 52 of the first cam 5 , and a second end of the tension spring is relatively fixed to the main body of the cleaning device 10 .

[0121] Among them, by making the elastic member 4 a tension spring and connecting the first end of the tension spring to the protrusion 52 of the first cam 5, the second end of the tension spring is relatively fixed to the main body of the cleaning device 10, which can stably provide elastic force, so that the rotating cleaning unit 1 can switch from the second position to the first position.

[0122] In some possible embodiments provided by the present disclosure, the elastic member 4 is a torsion spring, and the torsion spring is arranged at the rotation axis of the first cam 5 .

[0123] Among them, the torsion spring can be arranged coaxially with the rotating shaft of the first cam 5, that is, the torsion spring can be sleeved on the outer peripheral side of the rotating shaft of the first cam 5, and one end of the torsion spring is connected to the convex portion 52 of the first cam 5, and the second end of the torsion spring is relatively fixed to the main body of the cleaning device 10, and can also provide stable elastic force, so that the rotating cleaning unit 1 can switch from the second position to the first position.

[0124] In some possible embodiments provided by the present disclosure, the elastic member 4 is an elastic sheet, a first end of the elastic sheet is connected to the protrusion 52 of the first cam 5 , and a second end of the elastic sheet is relatively fixed to the main body of the cleaning device 10 .

[0125] Among them, the first end of the elastic sheet is connected to the protrusion 52 of the first cam 5, and the second end is relatively fixed to the main body of the cleaning device 10. It can stably drive the rotating cleaning unit 1 to switch from the second position to the first position through the elastic force generated after deformation.

[0126] It is understandable that the elastic member 4 may also be an elastic component other than a tension spring, a torsion spring and an elastic sheet, as long as it can provide elastic force to enable the rotary cleaning unit 1 to switch from the first position to the second position.

[0127] In some possible embodiments provided by the present disclosure, the outer walls of the first cam 5 and the second cam 33 are provided with a wear-resistant layer, which can reduce the friction when the first cam 5 and the second cam 33 abut against each other, thereby protecting the first cam 5 and the second cam 33, thereby extending the service life of the first cam 5 and the second cam 33, and at the same time facilitating the rotation of the swing arm 2.

[0128] The wear-resistant layer may be a metal sheet, or may be replaced with other wear-resistant materials, including but not limited to PK and powder metallurgy, to prevent the first cam 5 and the second cam 33 from being worn.

[0129] In some possible embodiments provided by the present disclosure, a roller 335 is provided on the abutment portion 332 of the first cam 5. The first cam 5 abuts against the first drive assembly 3 through the roller 335, which enables rolling friction between the protrusion 52 and the first drive assembly 3, with less friction force, thereby ensuring that the first cam 5 and the first drive assembly 3 have a longer service life.

[0130] The convex portion 52 of the first cam 5 abuts against the abutting portion 332 of the second cam 33 via the roller 335 .

[0131] Specifically, the axis of the roller 335 is substantially parallel to the contact surface between the protrusion 52 and the first driving assembly 3 , thereby ensuring that the roller 335 can roll stably on the first cam 5 .

[0132] In another aspect of the present application, a cleaning device 10 is provided, comprising the above-mentioned transmission device.

[0133] In some possible embodiments provided in the present application, the cleaning device 10 also includes a first shell 6, which is connected to the main body of the cleaning device 10. The first shell 6 is arranged on the side of the cleaning device 10 close to the surface to be cleaned. The telescopic drive member 31 and the swing arm 2 are located outside the first shell 6. The transmission gear 32, the second cam 33, the first cam 5, and the elastic member 4 are all located inside the first shell 6. The transmission gear 32 is passed through the first shell 6 and is power-connected to the telescopic drive member 31. One end of the elastic member 4 is connected to the first shell 6, and the other end is connected to the first cam 5.

[0134] Among them, the transmission gear 32, the second cam 33, the first cam 5, and the elastic member 4 are all located in the first shell 6. Therefore, the first shell 6 is used to provide good protection for the transmission device, which is beneficial to extending the service life and reliability of the transmission device, and at the same time, it is beneficial to ensure that the transmission device has good transmission accuracy.

[0135] Specifically, the first housing 6 may include a detachably connected first upper housing and a first lower housing, thereby facilitating assembly and disassembly of the first housing 6, facilitating assembly and disassembly of the first drive assembly 3, and facilitating assembly and disassembly of the transmission device. Specifically, the first upper housing and the first lower housing may be detachably connected by at least one of screws, a snap-fit ​​structure, a mortise and tenon structure, and a magnetic structure.

[0136] In some possible embodiments provided in the present application, the cleaning device 10 also includes a position detection device 7, which is arranged in the shell and is used to detect the rotation position of the second cam 33. The telescopic drive member 31 rotates or stops rotating according to the detection result of the position detection device 7.

[0137] Among them, by setting up the position detection device 7, the rotation position of the second cam 33 can be detected, and then the rotation position of the first cam 5 can be known. Therefore, when the first cam 5 rotates to a suitable position, such as when the first cam 5 rotates to drive the rotary cleaning unit 1 to move to the first position or the second position through the swing arm 2, the telescopic drive member 31 stops rotating according to the detection result of the position detection device 7 at this time, and the rotary cleaning unit 1 can be kept in the first position or the second position to achieve accurate switching of the first position or the second position. It is understandable that when the first cam 5 rotates and the rotary cleaning unit 1 is not moved to the first position or the second position through the swing arm 2, the telescopic drive member 31 can continue to rotate according to the detection result of the position detection device 7 at this time, so as to drive the rotary cleaning unit 1 to continue to move in the direction close to the target operating position (such as the first position or the second position).

[0138] The position detection device 7 may include a photoelectric switch, a mechanical switch or other detection mechanisms that meet the requirements.

[0139] In the above embodiment, the position detection device 7 includes a first photoelectric switch 71 and a second photoelectric switch 72 distributed on both sides of the second cam 33. The second cam 33 also includes a first baffle 333 and a second baffle 334 distributed on both sides of the abutment portion 332. The first baffle 333 is suitable for being inserted into the first photoelectric switch 71 so that the first photoelectric switch 71 changes the detection signal, and the second baffle 334 is suitable for being inserted into the second photoelectric switch 72 so that the second photoelectric switch 72 changes the detection signal.

[0140] In this embodiment, a first photoelectric switch 71 and a second photoelectric switch 72 are respectively provided on both sides of the second cam 33, so that the two photoelectric switches are used to respectively detect whether the rotating cleaning unit 1 reaches the first position and the second position, thereby improving the accuracy of detecting whether the rotating cleaning unit 1 reaches the target operating position.

[0141] The photoelectric switch typically includes a light emitting portion and a light receiving portion. The light receiving portion changes the detection signal of the photoelectric switch based on whether it can receive the light signal from the light emitting portion. By providing a first baffle 333 and a second baffle 334 on the second cam 33, the rotation of the second cam 33 can drive the first baffle 333 and the second baffle 334 to rotate synchronously. The first baffle 333 and the second baffle 334 are located on both sides of the abutment portion 332. When the second cam 33 rotates to a suitable position, the first baffle 333 is inserted into the first photoelectric switch 71, causing the first photoelectric switch 71 to change its detection signal. If the first baffle 333 is located between the light emitting portion and the light receiving portion of the first photoelectric switch 71, preventing the light receiving portion from receiving the light signal emitted by the light emitting portion, causing the first photoelectric switch 71 to change its detection signal, it indicates that the first cam 5 has rotated to a suitable position, placing the rotary cleaning unit 1 in the first position. At this time, the telescopic drive member 31 can stop rotating based on the detection signal of the first photoelectric switch 71, so that the rotary cleaning unit 1 remains in the first position.

[0142] When the second cam 33 rotates to a suitable position, the second baffle 334 is inserted into the second photoelectric switch 72 to change the detection signal of the second photoelectric switch 72. For example, the second baffle 334 is located between the light emitting part and the light receiving part of the second photoelectric switch 72 to prevent the light receiving part from receiving the light signal emitted by the light emitting part, so that the second photoelectric switch 72 changes the detection signal until the first cam 5 rotates to a suitable position, so that the rotary cleaning unit 1 is in the second position. At this time, the telescopic driving member 31 can stop rotating according to the detection signal of the second photoelectric switch 72, so that the rotary cleaning unit 1 is maintained in the second position.

[0143] In some possible embodiments provided in the present application, the cleaning device 10 also includes a rotation angle detection device, which is arranged on the telescopic drive member 31 and is used to detect the rotation angle of the output shaft of the telescopic drive member 31. The telescopic drive member 31 also rotates or stops rotating according to the detection result of the rotation angle detection device.

[0144] By providing a rotation angle detection device, the rotation angle of the output shaft of the telescopic drive member 31 can be detected, thereby knowing the rotation angle of the transmission gear 32, the rotation angle of the second cam 33, and further knowing the rotation angle of the first cam 5. Thus, when the first cam 5 rotates to a suitable angle, such as when the first cam 5 rotates to drive the rotary cleaning unit 1 to move to the first position or the second position through the swing arm 2, the telescopic drive member 31 stops rotating according to the detection result of the rotation angle detection device at this time, and the rotary cleaning unit 1 can be kept in the first position or the second position to achieve accurate switching between the first position or the second position. It is understandable that when the first cam 5 rotates and the rotary cleaning unit 1 is not moved to the first position or the second position through the swing arm 2, the telescopic drive member 31 can continue to rotate according to the detection result of the rotation angle detection device at this time, so as to drive the rotary cleaning unit 1 to continue moving in the direction close to the target operating position (such as the first position or the second position).

[0145] In some possible embodiments provided in the present application, a first limiting member 8 and a second limiting member 9 distributed on the periphery of the first cam 5 are further provided in the first shell 6. The first limiting member 8 is located on the side of the protrusion 52 away from the abutment portion 332, and the first limiting member 8 is used to abut against the protrusion 52 to limit the rotation of the first cam 5. The second limiting member 9 is located on the side of the connecting portion 51 away from the abutment portion 332, and the second limiting member 9 is used to abut against the connecting portion 51 to limit the rotation of the first cam 5.

[0146] Thus, the rotation of the first cam 5 can be limited. For example, after the first cam 5 rotates to a suitable position, the protrusion 52 of the first cam 5 abuts against the first limiting member 8, so that the first cam 5 will no longer move in the direction close to the first limiting member 8, so that the rotary cleaning unit 1 can be reliably and accurately maintained in the first position. At the same time, after the first cam 5 rotates to a suitable position, the connecting portion 51 of the first cam 5 abuts against the second limiting member 9, so that the first cam 5 will no longer move in the direction close to the second limiting member 9, so that the rotary cleaning unit 1 can be reliably and accurately maintained in the second position.

[0147] It can be understood that in this state, even if the telescopic drive member 31 continues to rotate, under the action of the first limit member 8 or the second limit member 9, the first cam 5 will not continue to rotate. Therefore, even when the position detection device 7 and the angle detection device fail, the rotary cleaning unit 1 can be reliably maintained in the first position or the second position, achieving double confirmation and improving the accuracy and reliability of the rotary cleaning unit 1 reaching the target operating position.

[0148] In some possible embodiments provided by the present disclosure, the cleaning device 10 further includes a second driving assembly 11 , which is connected to the rotating cleaning unit 1 and is used to drive the rotating cleaning unit 1 to move up and down.

[0149] The second driving assembly 11 is further used to drive the rotary cleaning unit 1 to vibrate and / or rotate around its own central axis.

[0150] Thus, the second driving assembly 11 can be used to drive the rotary cleaning unit 1 in the first position or the second position to descend until it contacts and rotates with the surface to be cleaned, so as to realize the mopping operation of the surface to be cleaned. After the cleaning operation is completed, the second driving assembly 11 is used to drive the rotary cleaning unit 1 to ascend, so that the rotary cleaning unit 1 can be separated from the surface to be cleaned, and the rotary cleaning unit 1 can be stored, so that during the movement of the cleaning device 10, the rotary cleaning unit 1 will not contact the surface to be cleaned. This can avoid the situation where the rotary cleaning unit 1 contacts the surface to be cleaned in scenarios where mopping is not required, such as when the cleaning device 10 travels back and forth between the base station or when performing carpet cleaning, causing secondary contamination of the surface to be cleaned. This is conducive to improving the cleanability of the automatic cleaning device 10, improving cleaning efficiency and user experience.

[0151] That is to say, the second driving assembly 11 can drive the lifting and rotating operation of the rotary cleaning unit 1 according to the requirement of whether the rotary cleaning unit 1 is in contact with the surface to be cleaned, that is, the rotary cleaning unit 1 needs to realize the cleaning function or the storage function, so as to meet the different functional requirements of the rotary cleaning unit 1, that is, it can realize the processing of the distinguishing strategy of cleaning or storage of the rotary cleaning unit 1, thereby improving the cleaning performance of the cleaning device 10. It can be understood that, that is, the rotary cleaning unit 1 can realize both the cleaning function and the storage function in the first position. The rotary cleaning unit 1 can realize both the cleaning function and the storage function in the second position.

[0152] The second driving assembly 11 is further used to drive the rotary cleaning unit 1 to vibrate, for example, in a horizontal direction, which can further improve the cleaning effect.

[0153] Thus, the cleaning device 10 provided by the embodiment of the present disclosure utilizes the first drive assembly 3 to drive the rotary cleaning unit 1 to switch between the first position and the second position, and utilizes the second drive assembly 11 to drive the rotary cleaning unit 1 to rise, fall, vibrate, and rotate. By cooperating with the first drive assembly 3 and the second drive assembly 11, wet cleaning operations for different wet cleaning ranges can be satisfied, thereby expanding the cleaning range of the cleaning device 10 and improving the cleaning effect. At the same time, it can satisfy the requirement of whether the rotary cleaning unit 1 needs to contact the surface to be cleaned, that is, it can meet the requirements of the rotary cleaning unit 1 for cleaning or storing different functions, thereby improving the cleaning performance of the cleaning device 10 and enhancing the user experience.

[0154] Among them, in this embodiment, a second drive component 11 is used to drive the lifting and rotation of the rotary cleaning unit 1. Compared with the related art that requires the use of two second drive components to drive the lifting and rotation of the cleaning element respectively, the setting is simplified to one drive component. Therefore, it can meet the design requirements of the cleaning equipment 10 with a compact structure and a small size, which is conducive to reducing the space occupied by the cleaning equipment 10 and reducing costs, and is suitable for promotion and application.

[0155] In some possible embodiments provided by the present disclosure, the second drive component 11 includes: a lifting drive unit 111 and a connecting device 112, at least a portion of the connecting device 112 is arranged in the swing arm 2 and connected to the rotating cleaning unit 1, and the lifting drive unit 111 drives the rotating cleaning unit 1 to lift and rotate through the connecting device 112.

[0156] In this embodiment, since the connecting device 112 is connected to the swing arm 2 and the rotary cleaning unit 1, the connecting device 112 can drive the rotary cleaning unit 1 to rise and fall and rotate under the action of the lifting drive part 111, and can drive the rotary cleaning unit 1 to switch between the first position and the second position under the action of the swing arm 2.

[0157] In some possible embodiments provided by the present disclosure, the connecting device 112 includes:

[0158] The lifting drive unit 111 and the connecting device 112 , at least a portion of the connecting device 112 is disposed in the swing arm 2 and connected to the rotary cleaning unit 1 , and the lifting drive unit 111 drives the rotary cleaning unit 1 to lift and rotate via the connecting device 112 .

[0159] Thus, the power of the lifting drive part 111 is transmitted to the gear group 1122 through the worm 1121, and the sleeve 1123 is driven to lift and rotate through the gear group 1122, so as to drive the rotary cleaning unit 1 to lift and rotate. The worm 1121 cooperates with the gear group 1122, and its mechanical structure is compact, the volume is small, and the transmission is accurate, which is conducive to reducing the volume of the connecting device 112, and then reducing the volume of the second drive component 11, which can meet the design requirements of the cleaning equipment 10 with a compact structure and a small volume.

[0160] In the above embodiment, the gear set 1122 includes:

[0161] The turbine 11221, the first sub-gear 11222, the second sub-gear, the third sub-gear 11225 and the connecting cylinder 11226, wherein,

[0162] The turbine 11221 and the first sub-gear 11222 are coaxially arranged, the turbine 11221 is located outside the swing arm 2 and meshed with the worm 1121, the first sub-gear 11222, the second sub-gear, and the third sub-gear 11225 are all located inside the swing arm 2, the second sub-gear includes a coaxially arranged first toothed disc 11223 and a second toothed disc 11224, the first sub-gear 11222 is meshed with the first toothed disc 11223, the second toothed disc 11224 is meshed with the third sub-gear 11225, the connecting tube 11226 is coaxially arranged with the third sub-gear 11225 and is located outside the swing arm 2, the connecting tube 11226 is threadedly connected to the sleeve 1123, and the gear set 1122 rotates to make the sleeve 1123 and the connecting tube 11226 rotate relative to each other, so as to drive the sleeve 1123 to rise or fall relative to the connecting tube 11226.

[0163] Thus, the lifting drive part 111 rotates to drive the worm 1121 to rotate. Since the turbine 11221 is engaged with the worm 1121, the turbine 11221 will be driven to rotate, and then the first sub-gear 11222 coaxially arranged with the turbine 11221 will be driven to rotate. Since the first sub-gear 11222 is engaged with the first gear plate 11223, the first gear plate 11223 and the second gear plate 11224 coaxially arranged with the first gear plate 11223 will be driven to rotate. Since the second gear plate 11224 is engaged with the third sub-gear 11225, the third sub-gear 11225 will be driven to rotate, and then the connecting tube 11226 coaxially arranged with the third sub-gear 11225 will be driven to rotate. Since the connecting cylinder 11226 and the sleeve 1123 are threadedly connected, the sleeve 1123 and the connecting cylinder 11226 rotate relative to each other to drive the sleeve 1123 to rise or fall relative to the connecting device 112, thereby driving the rotary cleaning unit 1 installed in the sleeve 1123 to rise and rotate. This arrangement has a simple structure and high transmission accuracy.

[0164] Among them, the first sub-gear 11222, the second sub-gear, and the third sub-gear 11225 are all located inside the swing arm 2. Thus, the swing arm 2 provides installation space and a certain degree of protection for the first sub-gear 11222, the second sub-gear, and the third sub-gear 11225, which can extend the service life of the first sub-gear 11222, the second sub-gear, and the third sub-gear 11225, thereby improving the reliability of the second drive component 11, and at the same time, can meet the design requirements of the first cleaning component with a compact structure and small size. It can be understood that the rotating shaft connecting the first sub-gear 11222 and the turbine 11221 is passed through the swing arm 2, and the rotating shaft connecting the third sub-gear 11225 and the connecting tube 11226 is passed through the swing arm 2, so as to transmit the power of the lifting drive part 111 from the outside of the swing arm 2 to the inside of the swing arm 2 through the worm 1121 and the turbine 11221, and then transmit it to the outside of the swing arm 2 again through the connecting tube 11226, and drive the lifting and rotation of the rotary cleaning unit 1 through the sleeve 1123.

[0165] In some possible embodiments provided by the present disclosure, the wall of the connecting cylinder 11226 is provided with a guide portion 11227 arranged in a spiral direction; the wall of the sleeve 1123 is provided with a slot 11231 for accommodating the connecting cylinder 11226, and the groove wall of the slot 11231 is provided with a spiral guide groove 11232 for accommodating the guide portion 11227.

[0166] In this embodiment, a slot 11231 is provided at the top of the sleeve 1123, and the slot 11231 of the sleeve 1123 is inserted into the wall of the connecting tube 11226, so that the guide portion 11227 on the wall of the connecting tube 11226 is accommodated in the guide groove 11232 of the slot 11231. Since the guide portion 11227 is arranged in a spiral shape and the guide groove 11232 is spiral, the guide portion 11227 moves in a spiral shape along the guide groove 11232, so that the sleeve 1123 can be rotated and lifted relative to the connecting tube 11226, that is, the connection method between the sleeve 1123 and the connecting tube 11226 can be regarded as a connection method of a screw nut. This setting has a simple structure and is easy to implement, and can use a set of structures to realize the lifting and rotation of the sleeve 1123, which is beneficial to reducing the volume of the second drive component 11.

[0167] Furthermore, the guide portion 11227 is arranged on the outer wall of the connecting tube 11226, and the guide groove 11232 is arranged on the groove wall of the slot 11231 away from the inside of the sleeve 1123, or the guide portion 11227 is arranged on the inner wall of the connecting tube 11226, and the guide groove 11232 is arranged on the groove wall of the slot 11231 close to the inside of the sleeve 1123.

[0168] Among them, the guide part 11227 is a spiral boss. If the guide part 11227 is an outward-convex thread, it is beneficial to improve the accuracy and reliability of the mutual limitation and guidance of the guide part 11227 and the guide groove 11232, so as to improve the stability of the sleeve 1123 in the lifting and rotating relative to the connecting tube 11226.

[0169] Alternatively, the guide portion 11227 may be a plurality of protrusions spaced apart, that is, the protrusions are spaced apart along a spiral, thereby simplifying the structure of the guide portion 11227, reducing the material used for the guide portion 11227 and saving manufacturing costs. Specifically, the number of protrusions may be two, three, four, or another number.

[0170] In some possible embodiments provided by the present disclosure, a retaining rib is provided near the opening of the slot 11231. The retaining rib is used to abut against the guide portion 11227 to limit the lifting and lowering movement of the sleeve 1123 relative to the connecting tube 11226. That is, the retaining rib cooperates with the guide portion 11227 to limit the lowering limit of the sleeve 1123 relative to the connecting tube 11226. This prevents the guide portion 11227 from disengaging from the guide slot 11232, thereby separating the sleeve 1123 and the connecting tube 11226, thereby ensuring that the sleeve 1123 can be securely connected to the connecting tube 11226. At the same time, the rotary cleaning unit 1 connected to the sleeve 1123 can reliably and fully contact the surface to be cleaned.

[0171] The guide portion 11227 abuts against the bottom of the slot 11231 to limit the lifting movement of the sleeve 1123 relative to the connecting tube 11226. That is, the guide portion 11227 cooperates with the bottom of the slot 11231 to limit the limit of the sleeve 1123's rise relative to the connecting tube 11226, thereby preventing the rotary cleaning unit 1 from continuing to rise after reaching the limit position and damaging the second drive assembly 11, thereby improving the reliability of the cleaning device 10. At the same time, a certain distance is maintained between the rotary cleaning unit 1 at the limit of the rise and the surface to be cleaned, thereby reducing the impact on the cleaning device 10 climbing slopes and overcoming obstacles, as well as the impact on secondary contamination of the surface to be cleaned.

[0172] In some possible embodiments provided by the present disclosure, the inner wall of the sleeve 1123 is provided with a limiting plane 11233 that matches the rotating cleaning unit 1. The setting of the limiting plane 11233 can ensure that the rotating cleaning unit 1 rotates with the rotation of the sleeve 1123, so as to ensure that the rotating cleaning unit 1 has good cleaning ability.

[0173] The axial cross-section of the sleeve 1123 is hexagonal, that is, the inner wall of the sleeve 1123 is provided with six planes. It is understood that these six planes can all be limiting planes 11233, or some of the six planes can be limiting planes 11233. Specifically, the portion where the rotary cleaning unit 1 is connected to the sleeve 1123 can be provided with a hexagonal prism structure. Thus, by utilizing the hexagonal prism structure and the six planes on the inner wall of the sleeve 1123, the rotation of the rotary cleaning unit 1 relative to the sleeve 1123 can be limited. This has a simple structure, is easy to process, and provides reliable limiting.

[0174] In some possible embodiments provided by the present disclosure, the second drive assembly 11 also includes a second shell 113 with an opening at one end. When the cleaning device 10 includes a first shell 6, the second shell 113 is engaged with the first shell 6, and the worm 1121, the turbine 11221, the swing arm 2 and the connecting tube 11226 are located in the space enclosed by the second shell 113 and the first shell 6. The opening of the second shell 113 is located on the side away from the first shell 6, and the bottom end of the sleeve 1123 is suitable for extending out of the opening of the second shell 113. The lifting drive part 111 is located outside the second shell 113, and the worm 1121 is passed through the second shell 113 and connected to the lifting drive part 111.

[0175] Among them, the bottom end of the sleeve 1123 is suitable for extending out of the opening of the second shell 113 to ensure that the rotating cleaning unit 1 connected to the sleeve 1123 can be lowered to contact the surface to be cleaned. At the same time, the bottom end of the second shell 113 can be kept at a certain distance from the surface to be cleaned to avoid the influence of the second shell 113 on the cleaning equipment 10 climbing slopes and crossing obstacles.

[0176] The lifting drive unit 111 is located outside the second shell 113 , and the worm 1121 passes through the second shell 113 and is connected to the lifting drive unit 111 , thereby transmitting the power of the lifting drive unit 111 from the outside of the second shell 113 to the inside of the second shell 113 .

[0177] In the above embodiment, the second shell 113 is divided into a first installation cavity 1131 and a second installation cavity 1132, the turbine 11221 is located in the first installation cavity 1131, the sleeve 1123 is located in the second installation cavity 1132, the swing arm 2 extends to the first installation cavity 1131 and the second installation cavity 1132, the first sub-gear 11222 in the swing arm 2 is coaxially arranged with the turbine 11221 in the first installation cavity 1131, and the sleeve 1123 in the second installation cavity 1132 is connected to the connecting tube 11226 on the swing arm 2, thereby enabling the power of the lifting drive part 111 to be transmitted to the sleeve 1123 via the first installation cavity 1131 and the second installation cavity 1132 to drive the rotary cleaning unit 1 to lift and rotate.

[0178] Among them, the shape of the second installation cavity 1132 is adapted to the movement space of the swing arm 2, so that the cavity wall of the second installation cavity 1132 will not hinder the movement of the swing arm 2. At the same time, it plays a good protective role for the swing arm 2 and reduces the volume of the second drive component 11 as much as possible to meet the design requirements of the first cleaning component with a compact structure and small volume.

[0179] Among them, the second shell 113 also includes a base plate 1133, which is detachably connected to the cavity wall of the first installation cavity 1131 to enclose the turbine 11221 in the first installation cavity 1131. The setting of the base plate 1133 plays a good protective role for the turbine 11221, and can reduce the contamination of the turbine 11221 by dirty liquid, thereby increasing the service life of the turbine 11221 and improving the reliability of the second drive assembly 11.

[0180] Specifically, the bottom plate 1133 can be detachably connected to the cavity wall of the first installation cavity 1131 by means of screws, a snap-fit ​​structure, a mortise and tenon structure, a magnetic structure, or the like.

[0181] An embodiment of the present invention provides a transmission device and a cleaning device 10. By setting one end of a swing arm 2 to be rotatably connected to the main body of the cleaning device 10 and the other end to be connected to the rotary cleaning unit 1, the cleaning device 10 using the above-mentioned transmission device has a drag tray retractable function. The swing arm 2 can be used to drive the rotary cleaning unit 1 to switch between a first position and a second position according to the cleaning range requirements, so as to move the rotary cleaning unit 1 to an operating position that meets the corresponding cleaning range requirements, thereby meeting the requirements of different mopping ranges, expanding the mopping range, and helping to improve the cleaning effect and enhance the user's cleaning experience. At the same time, when the rotary cleaning unit 1 moves from the first position to the second position, the rotation direction of the swing arm 2 is the same as the rotation direction of the rotary cleaning unit 1, so that the torque generated by the friction between the rotary cleaning unit 1 and the surface to be cleaned becomes a boost for the retraction of the rotary cleaning unit 1, so that the rotary cleaning unit 1 can be easily retracted when it contacts an obstacle, thereby avoiding the passive change of the posture of the cleaning device 10 when the rotary cleaning unit 1 is blocked by an obstacle, and the cleaning device 10 can be cleaned close to the boundary of the obstacle, so that the cleaning device 10 can work in complex environments, thereby improving the applicability of the cleaning device 10.

[0182] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0183] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above are merely preferred embodiments of the present application. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. A transmission device, wherein: Applied to a cleaning device (10), the transmission device comprises a swing arm (2) and a rotating cleaning unit (1), one end of the swing arm (2) is rotatably connected to the main body of the cleaning device (10), and the other end is connected to the rotating cleaning unit (1), and the swing arm (2) is used to drive the rotating cleaning unit (1) to move between a first position and a second position; Wherein, when the rotating cleaning unit (1) is located at the second position, the area of ​​at least part of the rotating cleaning unit (1) located outside the projection area of ​​the cleaning device (10) is larger than the area of ​​at least part of the rotating cleaning unit (1) located outside the projection area of ​​the cleaning device (10) when the rotating cleaning unit (1) is located at the first position; when the rotating cleaning unit (1) moves from the first position toward the second position, the rotation direction of the swing arm (2) is the same as the rotation direction of the rotating cleaning unit (1).

2. The transmission device according to claim 1, wherein: The rotation direction of the swing arm (2) is the same as the rotation direction of the rotary cleaning unit (1), specifically: The direction of rotation is clockwise.

3. The transmission device according to claim 1, wherein: The rotation direction of the swing arm (2) is the same as the rotation direction of the rotary cleaning unit (1), specifically: The direction of rotation is counterclockwise.

4. The transmission device according to any one of claims 1 to 3, wherein: The transmission device also includes a first driving component (3) and an elastic member (4), wherein the elastic member (4) is connected to the swing arm (2), and the first driving component (3) is used to cooperate with the elastic member (4) to rotate the swing arm (2) to drive the rotating cleaning unit (1) to move between the first position and the second position.

5. The transmission device according to claim 4, wherein: The first end of the elastic member (4) is connected to the swing arm (2), and the second end of the elastic member (4) is fixedly arranged relative to the main body of the cleaning device (10).

6. The transmission device according to claim 5, wherein: The transmission device also includes a first cam (5), wherein the first cam (5) is arranged at one end of the swing arm (2) away from the rotating cleaning unit (1), and when the rotating cleaning unit (1) moves from the second position toward the first position, the first driving component (3) abuts against the protrusion (52) of the first cam (5).

7. The transmission device according to claim 6, wherein: The elastic member (4) is a tension spring, the first end of the tension spring is connected to the first cam (5), and the second end of the tension spring is relatively fixed to the main body of the cleaning device (10); Alternatively, the elastic member (4) is a torsion spring, the torsion spring is arranged at the rotating shaft of the first cam (5), the first end of the torsion spring is connected to the first cam (5), and the second end of the torsion spring is relatively fixed to the main body of the cleaning device (10); Alternatively, the elastic member (4) is an elastic sheet, a first end of the elastic sheet is connected to the first cam (5), and a second end of the elastic sheet is relatively fixed to the main body of the cleaning device (10).

8. The transmission device according to claim 6, wherein: The first end of the elastic member (4) is connected to the first cam (5); and / or The first end of the elastic member (4) is connected to the swing arm (2).

9. The transmission device according to claim 8, wherein: The first cam (5) has a connecting portion (51) on its circumferential side, and the elastic member (4) is connected to the first cam (5) via the connecting portion (51).

10. The transmission device according to claim 6, wherein: When the first cam (5) rotates in a first direction under the drive of the first driving assembly (3), the rotary cleaning unit (1) moves from the second position toward the first position.

11. The transmission device according to claim 6, wherein: When the first cam (5) rotates in the second direction under the action of the elastic member (4), the rotary cleaning unit (1) moves from the first position toward the second position.

12. The transmission device according to claim 6, wherein: When the rotary cleaning unit (1) moves from the second position toward the first position, the elastic member (4) accumulates elastic potential energy under the drive of the first driving assembly (3).

13. The transmission device according to claim 6, wherein: When the rotary cleaning unit (1) moves from the first position toward the second position, the elastic potential energy of the elastic member (4) is released.

14. The transmission device according to claim 6, wherein: The first driving assembly (3) comprises a first driving part and a second cam (33); the first driving part is connected to the second cam (33) and is used to drive the second cam (33) to rotate; the second cam (33) is in contact with the first cam (5) and is used to drive the first cam (5) to rotate.

15. The transmission device according to claim 14, wherein: The second cam (33) is arranged on the output end of the first driving part, so that the first driving part drives the second cam (33) to rotate; or, The output end of the first driving part is drivingly connected to the second cam (33).

16. The transmission device according to claim 14, wherein: The second cam (33) comprises a sector-shaped tooth portion (331) and an abutment portion (332); the first driving portion is meshed with the sector-shaped tooth portion (331); the abutment portion (332) abuts against the first cam (5); and the first cam (5) is coaxially arranged with the swing arm (2).

17. The transmission device according to claim 16, wherein: The first driving part comprises a telescopic driving member (31) and a transmission gear (32), wherein the telescopic driving member (31) is connected to the transmission gear (32), and the transmission gear (32) is meshed with the sector-shaped tooth portion (331), so that the telescopic driving member (31) drives the abutment portion (332) through the transmission gear (32) and the sector-shaped tooth portion (331) to push the first cam (5) to rotate, and drives the rotary cleaning unit (1) to move from the second position to the first position through the synchronous rotation of the swing arm (2).

18. The transmission device according to claim 14, wherein: When the rotary cleaning unit (1) is in the second position, the second cam (33) is separated from the first cam (5).

19. The transmission device according to claim 14, characterized in that: A wear-resistant layer is provided on the outer walls of the first cam (5) and the second cam (33).

20. The transmission device according to claim 14, wherein: A roller (335) is provided on the second cam (33), and the second cam (33) abuts against the first cam (5) via the roller (335).

21. A cleaning device comprising the transmission device according to any one of claims 1 to 20.

22. The cleaning device according to claim 21, wherein the cleaning device (10) comprises a first shell (6), the telescopic drive member (31) and the swing arm (2) are located outside the first shell (6), the transmission gear (32), the second cam (33), the first cam (5) and the elastic member (4) are located inside the first shell (6), the transmission gear (32) passes through the first shell (6) and is dynamically connected to the telescopic drive member (31), one end of the elastic member (4) is connected to the first shell (6), and the other end is connected to the first cam (5).

23. The cleaning device according to claim 22, wherein: The cleaning device also includes: A position detection device (7), wherein the position detection device (7) is arranged in the first housing (6) and is used to detect the rotation position of the second cam (33), and the telescopic driving member (31) rotates or stops rotating according to the detection result of the position detection device (7).

24. The cleaning device according to claim 23, wherein: The position detection device (7) comprises a first photoelectric switch (71) and a second photoelectric switch (72) distributed on both sides of the second cam (33); the second cam (33) further comprises a first baffle (333) and a second baffle (334) distributed on both sides of the abutment portion (332); the first baffle (333) is suitable for being inserted into the first photoelectric switch (71) so that the first photoelectric switch (71) changes a detection signal; the second baffle (334) is suitable for being inserted into the second photoelectric switch (72) so that the second photoelectric switch (72) changes a detection signal.

25. A cleaning device according to any one of claims 21 to 24, wherein The cleaning device also includes: The rotation angle detection device is arranged on the telescopic driving member (31) and is used to detect the rotation angle of the output shaft of the telescopic driving member (31). The telescopic driving member (31) also rotates or stops rotating according to the detection result of the rotation angle detection device.

26. A cleaning device according to any one of claims 21 to 24, wherein A first limiting member (8) and a second limiting member (9) are provided on the circumferential side of the first cam (5); the first limiting member (8) is located on a side of the convex portion (52) away from the abutting portion (332); the first limiting member (8) is used to abut against the convex portion (52) to limit the rotation of the first cam (5); the second limiting member (9) is located on a side of the connecting portion (51) away from the abutting portion (332); the second limiting member (9) is used to abut against the connecting portion (51) to limit the rotation of the first cam (5).

27. The cleaning device of claim 23, wherein: The cleaning device (10) further comprises a second driving component (11), wherein the second driving component (11) is connected to the rotating cleaning unit (1) and is used to drive the rotating cleaning unit (1) to rise and fall.

28. The cleaning device according to claim 27, wherein The second driving assembly (11) is also used to drive the rotary cleaning unit (1) to vibrate and / or rotate with its own central axis as the rotation center.

29. The cleaning device according to claim 27, wherein: The second driving assembly (11) comprises: A lifting drive unit (111) and a connecting device (112), wherein at least a portion of the connecting device (112) is arranged in the swing arm (2) and is connected to the rotating cleaning unit (1), and the lifting drive unit (111) drives the rotating cleaning unit (1) to lift and rotate via the connecting device (112).

30. The cleaning device of claim 29, wherein: The connecting device (112) comprises: A worm (1121), a gear set (1122), and a sleeve (1123) are connected in a power manner, wherein the worm (1121) is connected in power to the lifting drive unit (111), the gear set (1122) is arranged in the swing arm (2), and the sleeve (1123) is connected to the rotating cleaning unit (1), and the worm (1121) drives the sleeve (1123) to be lifted and rotated through the gear set (1122) to drive the rotating cleaning unit (1) to be lifted and rotated.

31. The cleaning device according to claim 30, wherein: The gear set (1122) comprises: A turbine (11221), a first sub-gear (11222), a second sub-gear, a third sub-gear (11225) and a connecting cylinder (11226); in, The turbine (11221) and the first sub-gear (11222) are coaxially arranged; the turbine (11221) is located outside the swing arm (2) and meshes with the worm (1121); the first sub-gear (11222), the second sub-gear, and the third sub-gear (11225) are all located inside the swing arm (2); the second sub-gear includes a first toothed disc (11223) and a second toothed disc (11224) which are coaxially arranged; the first sub-gear (11222) meshes with the first toothed disc (11223); and the second toothed disc (11224) meshes with the first toothed disc (11223). (11224) is coaxially arranged on the first gear disc (11223) and meshes with the third sub-gear (11225), the connecting tube (11226) is coaxially arranged with the third sub-gear (11225) and is located outside the swing arm (2), the connecting tube (11226) is threadedly connected to the sleeve (1123), and the gear set (1122) rotates to make the sleeve (1123) and the connecting tube (11226) rotate relative to each other, so as to drive the sleeve (1123) to rise or fall relative to the connecting tube (11226).

32. The cleaning device according to claim 31, wherein The wall of the connecting cylinder (11226) is provided with a guide portion (11227) arranged in a spiral direction; The sleeve (1123) has a wall formed with a slot (11231) for accommodating the connecting sleeve (11226), and the slot wall of the slot (11231) has a spiral guide groove (11232) for accommodating the guide portion (11227); Wherein, the guide portion (11227) is a spiral boss or a plurality of protrusions distributed at intervals.

33. The cleaning device of claim 32, wherein: A retaining rib is provided on the groove wall of the slot (11231) near the opening, and the retaining rib is used to abut against the guide portion (11227) to limit the lifting and lowering movement of the sleeve (1123) relative to the connecting tube (11226); The guide portion (11227) abuts against the bottom of the slot (11231) to limit the lifting and lowering movement of the sleeve (1123) relative to the connecting tube (11226).

34. The cleaning device of claim 33, wherein: The inner wall of the sleeve (1123) is provided with a limiting plane (11233) matching the rotating cleaning unit (1); Wherein, the axial cross-section of the sleeve (1123) is hexagonal.

35. The cleaning device of claim 33, wherein: The second driving assembly (11) further comprises a second shell (113) with an opening at one end. When the cleaning device (10) comprises the first shell (6), the second shell (113) is engaged with the first shell (6). The worm (1121), the turbine (11221), the swing arm (2) and the connecting tube (11226) are located in a space enclosed by the second shell (113) and the first shell (6). The opening of the second shell (113) is located on a side away from the first shell (6). The bottom end of the sleeve (1123) is suitable for extending out of the opening of the second shell (113). The lifting driving part (111) is located outside the second shell (113). The worm (1121) is inserted into the second shell (113) and connected to the lifting driving part (111).

36. The cleaning device of claim 35, wherein: The second housing (113) is divided into a first installation cavity (1131) and a second installation cavity (1132); the turbine (11221) is located in the first installation cavity (1131); the sleeve (1123) is located in the second installation cavity (1132); the swing arm (2) extends to the first installation cavity (1131) and the second installation cavity (1132); and the shape of the second installation cavity (1132) is adapted to the movement space of the swing arm (2); The second shell (113) further includes a bottom plate (1133), and the bottom plate (1133) is detachably connected to the cavity wall of the first installation cavity (1131) so as to enclose the turbine (11221) in the first installation cavity (1131).

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