Driving mechanism, self-cleaning device and self-cleaning system

Abstract

This invention relates to a driving mechanism, comprising: a main support body; a first transmission member, the first transmission member including a first end and a second end, the second end being used to connect with a cleaning component; a second transmission member, the first transmission member and the second transmission member being movably connected, the second transmission member being movably connected to the main support body, and a first frictional force existing between the second transmission member and the main support body; and a power assembly, the power assembly being transmittedly connected to the first end, the power assembly being used to drive the first transmission member to rotate, so that the first transmission member and the second transmission member interact, thereby driving the first transmission member to move the cleaning component up or down.

Description

Technical Field

[0001] This disclosure relates to the field of smart home technology, and in particular to a drive mechanism, a self-cleaning device, and a self-cleaning system. Prior Technology

[0002] With the continuous development of smart home technology, robotic vacuum cleaners are being used more and more frequently in daily household cleaning. Robotic vacuum cleaners clean by rotating their cleaning components and moving the entire robot, allowing the components to move relative to the floor. The cleaning components can also be raised and lowered, allowing for storage when not in use and obstacle avoidance when encountering obstacles such as carpets or felt.

[0003] In existing robotic vacuum cleaners, two independent drive mechanisms are set up to drive the lifting and rotating of the cleaning components, resulting in a complex structure and drive program. Summary of the Invention

[0004] In view of this, in order to solve at least one of the above-mentioned technical problems, the present disclosure provides a drive mechanism, a self-cleaning device, and a self-cleaning system.

[0005] On one hand, this disclosure provides a drive mechanism for a self-cleaning device, the drive mechanism comprising: Main support structure; The first transmission component includes a first end and a second end, the second end being used to connect with the cleaning component; The second transmission component is movably connected to the first transmission component and the second transmission component, and the second transmission component is movably connected to the main support body, and there is a first frictional force between the second transmission component and the main support body; The power assembly is connected to the first end transmission and is used to drive the first transmission component to rotate so that the first transmission component interacts with the second transmission component, thereby driving the first transmission component to move the cleaning component up or down.

[0006] On the other hand, this disclosure provides a self-cleaning device, including a drive mechanism as described above, and a device body, wherein the drive mechanism is disposed on the device body.

[0007] In another aspect, this disclosure provides a self-cleaning system, including the aforementioned self-cleaning device and a cleaning base station.

[0008] The drive mechanism, self-cleaning device, and self-cleaning system disclosed herein, when the first transmission component is driven to move by the power component, drive the first and second transmission components to move relative to each other through the interaction between the first and second transmission components and the friction between the second transmission component and the main support body, thereby causing the first transmission component to rise or fall, realizing the lifting and lowering drive of the cleaning component, and through the interaction between the first and second transmission components, drive the first and second transmission components to move synchronously, thereby realizing the lifting and lowering and moving cleaning of the cleaning component driven by a single power component, reducing the number of drive components, simplifying the structure of the self-cleaning device, and reducing production costs and drive burden. Simple Explanation of the Diagram

[0009] Embodiments, features, and advantages of the present invention will become clear from the following description taken in conjunction with the accompanying drawings, in which: Figure 1 is a schematic diagram of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in a clean position; Figure 2 is a first cross-sectional view of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in a clean position; Figure 3 is an exploded cross-sectional view of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in a clean position; Figure 4 is an exploded view of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in a clean position; Figure 5 is a schematic diagram of the structure of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in the retracted position; Figure 6 is a cross-sectional view of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in the retracted position; Figure 7 is a schematic diagram of a portion of the structure of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in the retracted position; Figure 8 is a second cross-sectional view of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in a clean position; Figure 9 is a schematic diagram of a portion of the structure of a drive mechanism provided in an embodiment of this disclosure when the first transmission component is in a clean position; Figure 10 is a cross-sectional view of another driving mechanism provided in an embodiment of this disclosure; Figure 11 is an exploded structural diagram of another driving mechanism provided in an embodiment of this disclosure; Figure 12 is a partial structural schematic diagram of another driving mechanism provided in an embodiment of this disclosure. To facilitate understanding, the same reference numerals have been used where possible to indicate the same elements common to these figures. Implementation

[0010] The invention will now be described in more detail with reference to exemplary embodiments. The following detailed description is merely exemplary in nature and is not intended to limit the scope of this disclosure or this application and its intended use. Furthermore, it is not intended to be bound by any theory presented in the foregoing background or the following detailed description.

[0011] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more complete and thorough understanding of the disclosure of the present invention.

[0012] This invention claims priority to Chinese Patent Application No. 202410323970.9, filed on March 20, 2024, and Chinese Patent Application No. 202410634735.3, filed on May 21, 2024, the entire contents of which are incorporated herein by reference.

[0013] To further illustrate the technical means and effects adopted by this disclosure in order to achieve the intended disclosure purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes in detail the specific implementation, structure, features and effects of a drive mechanism proposed according to this disclosure.

[0014] As shown in Figures 1 to 6, this disclosure provides a driving mechanism for self-cleaning devices. These devices may include, but are not limited to, cleaning robots, smart cleaners, automatic floor scrubbers, mopping robots, and sweeping-mopping robots, and have functions such as movement, sweeping, and vacuuming. Some self-cleaning devices also include mopping, terrain detection, and indoor area scanning functions. Taking a cleaning robot as an example, cleaning robots can come in various shapes. To ensure stability and applicability to various scenarios, such as cleaning areas under beds, the outer contour of a cleaning robot is usually flat. The outer shell of the cleaning robot mainly includes a chassis and an outer cover connected to the chassis and forming a cavity. Various components for the cleaning robot's operation can be installed in the cavity, such as a controller, power supply, position sensing components such as cameras, scanners, and gyroscopes, a cleaning mechanism, and a walking mechanism. The controller can be used to control the cleaning system and the walking mechanism. Common walking mechanisms mainly include moving wheels and auxiliary steering wheels. The moving wheels are driven by a drive motor in the cavity, causing them to rotate and propel the cleaning robot. The auxiliary steering wheel can be a swivel wheel fixed under the chassis. By rotating and stopping the moving wheel, the auxiliary steering wheel can be used to turn the cleaning robot.

[0015] The cleaning system may include a sweeping component and a mopping component. The sweeping component includes a roller brush drive, a roller brush, a dustbin, and a blower. The roller brush is connected to the main body of the machine via the roller brush drive. The main body has a suction port located behind the roller brush, and the dustbin is located in the airflow path between the blower and the suction port. The roller brush has some interference with the ground. During rotation, the roller brush sweeps up debris from the ground and carries it below the suction port, where it is then sucked into the dustbin by air drawn back towards it by the blower. The mopping component may include a mop drive and one or more mops. The mops can rotate to perform dry mopping. In some embodiments, the mopping system also includes a water tank to replenish water to the mops for wet mopping. Because the mop head has a large surface area and its surface is made of soft, absorbent materials such as felt or loops, there is significant friction between the mop head and floor coverings such as carpets. Furthermore, the mop head retains stains after cleaning, especially after wet mopping, leaving wastewater on it. To prevent friction between the mop head and floor coverings from affecting the cleaning robot's movement and to avoid repeated contamination of the floor by a wastewater-laden mop, the mop head needs a lifting function. Existing mop drive components consist of a mop rotation drive and a mop lifting drive. The mop rotation drive is connected to the mop head and drives its rotation, while the mop lifting drive is connected to the integrated structure of the mop rotation drive and the mop head and drives the overall lifting. This results in two separate drive systems for mop lifting and rotation, leading to structural redundancy, heavy weight, a heavy driving load on the lifting drive, and a cumbersome control process. This application aims to solve this problem by proposing a drive mechanism that achieves lifting and rotation control of the cleaning component using only a single power component and structural design.

[0016] Specifically, the drive mechanism includes: Main support body 100; The first transmission component 200 includes a first end and a second end, the second end being used to connect with the cleaning component 500; The second transmission component 300 is movably connected to the first transmission component 200 and the second transmission component 300. The second transmission component 300 is movably connected to the main support body 100, and there is a first frictional force between the second transmission component 300 and the main support body 100. The power assembly 400 is connected to the first end drive and is used to drive the first drive member 200 to move so that the first drive member 200 interacts with the second drive member 300, thereby driving the first drive member 200 to drive the cleaning member 500 to rise or fall.

[0017] The main support 100 can be a separate support component for the drive mechanism, fixedly installed to the outer shell of the self-cleaning device; alternatively, the main support 100 can be part of the outer shell of the device body, achieving a tighter and more stable structural connection. The structure of the main support 100 can be configured according to the specific structures of the first transmission component 200, the second transmission component 300, and the power assembly 400, aiming to support the first transmission component 200, the second transmission component 300, and the power assembly 400, and to cooperate with the movement of the first transmission component 200. For ease of explanation, the following description uses the direction of the drive mechanism in actual use as an example. The first end is connected to the power assembly 400, thereby allowing the power assembly 400 to drive the first transmission component 200 to move through the first end. The first transmission component 200 will interact with the second transmission component 300, and the tendency of the first transmission component 200 to move will cause the first transmission component 200 and the second transmission component 300 to have a relative tendency to move, thereby causing the position of the first transmission component 200 to change at least in the vertical direction. The second transmission component 300 remains stationary relative to the main support body 100, while the first transmission component 200 moves up and down relative to the main support body 100, thus driving the first transmission component 200 to move up and down. The first transmission component 200 is connected to the cleaning component 500 through its second end, thereby driving the cleaning component 500 to move up and down. The cleaning component 500 can be various components that clean by rotation, such as a rotating mop, a side brush, etc. The rotating mop can be a round mop, a square mop, a triangular mop, etc. The cleaning position can be considered as the limit position of the movement of the first transmission component 200, and the limit position can be set as needed, such as according to the required lifting height of the cleaning component 500. The position of the first transmission component 200 also includes a storage position. In the storage position, the first transmission component 200 drives the cleaning component 500 to rise to its highest point. In some embodiments, the first transmission member 200 includes a cleaning position. When the first transmission member 200 and the second transmission member 300 interact and move relative to each other, the interaction between them changes. Instead of relative movement, they move synchronously, causing the cleaning member 500 to stop rising and falling and begin cleaning. The cleaning position refers to the extreme position where the first transmission member 200 descends to its lowest point. When the first transmission member 200 is in the cleaning position, the height of the cleaning member 500 connected to it is such that it interferes with the surface to be cleaned, and the interference strength, or compression strength, is sufficient for the cleaning member 500 to clean the surface without excessively compressing it and affecting its movement.

[0018] The power assembly 400 can drive the first transmission component 200 to move in various ways, such as driving the first transmission component 200 to rotate, or to move linearly or in a curved path.

[0019] During use, the first transmission component 200 is controlled to move, which in turn drives the cleaning component 500 to descend until it reaches the cleaning position and the cleaning component 500 is at its lowest position. The first transmission component 200 continues to move, and the first transmission component 200, the second transmission component 300, and the cleaning component 500 move synchronously to achieve cleaning. When cleaning is complete and the cleaning component 500 needs to be stored, the first transmission component 200 is controlled to move in the opposite direction, disengaging from the cleaning position and causing the cleaning component 500 to rise, thus achieving storage.

[0020] It is worth noting that in some embodiments, the second transmission member 300 can rotate forward or backward relative to the main support body 100, with forward and backward rotation being two opposite directions of rotation. When the first transmission member 200 is driven forward to descend to the clean position, continuing to drive it in the same direction generates a rigid thrust between the first transmission member 200 and the second transmission member 300, thereby causing the second transmission member 300 to overcome the friction with the main support body 100 and follow the first transmission member 200 in rotating forward relative to the main support body 100. Conversely, when the first transmission member 200 is driven backward to rise to the highest position, continuing to drive it in the same direction generates a rigid thrust between the first transmission member 200 and the second transmission member 300, thereby causing the second transmission member 300 to overcome the friction with the main support body 100 and follow the first transmission member 200 in rotating backward relative to the main support body 100. The second transmission component 300 can rotate relative to the main support 100 in both positive and negative directions to avoid excessive compression damage to the first transmission component 200 and the second transmission component 300 caused by positional error of the first transmission component 200 or failure to detect the first transmission component 200 reaching its highest position in time, and to avoid overloading of the power component 400.

[0021] In some embodiments, as shown in FIG7, the drive mechanism further includes a first detection unit, which is connected to the main support 100. The first detection unit is used to detect whether the first transmission member 200 has reached a preset highest position. When the first transmission member 200 reaches the preset highest position, the first detection unit generates a rising position signal. The rising position signal indicates that the first transmission member 200 has been raised completely. After receiving the rising position signal, the movement of the first transmission member 200 can be stopped immediately. The first detection unit can be a first micro switch, such as a combination of a spring and a touch sensor. When the first transmission member 200 has not reached the preset height position, the spring disengages from the touch sensor. When the first transmission member 200 continues to rise, the first transmission member 200 will squeeze the spring, causing the spring to approach the touch sensor. When the first transmission member 200 reaches the preset height position, the spring contacts the touch sensor, thereby generating a rise-to-position signal. Alternatively, the first detection unit can be a light blocking device, such as a combination of a first photoelectric transmitter 910 and a first light receiver 920. The first photoelectric transmitter 910 and the first light receiver 920 are arranged opposite to each other. The first light receiver 920 is used to receive the photoelectric signal emitted by the first photoelectric transmitter 910, such as an infrared signal. When the first transmission member 200 has not reached the preset height position, there is no obstruction between the first photoelectric emitter 910 and the first light receiver 920. As the first transmission member 200 continues to rise, the top structure of the first transmission member 200 approaches the first photoelectric emitter 910. When the first transmission member 200 reaches the preset height position, the top structure enters between the first photoelectric emitter 910 and the first light receiver 920, thereby blocking the light from the first photoelectric emitter 910. The first light receiver 920 then generates a rising position signal. The top structure can be an action member 212, which will be described in detail below. Alternatively, the first detection unit can be a first magnetic sensor, such as a Hall sensor. The first transmission member 200 or the cleaning member 500 is provided with a first magnetic element that matches the Hall sensor. After the first transmission member 200 moves into position, or after the first transmission member 200 drives the cleaning member 500 into position, the first magnetic element will enter the detection range of the Hall sensor. The Hall sensor will detect the magnetism and generate a rising position signal. The first detection unit may also take other forms, with the aim of detecting the position of the first transmission member 200, and issuing a rising position signal at least when the first transmission member 200 reaches the preset highest position.The first detection unit serves two purposes. First, once the first transmission component 200 reaches its designated position, it will rotate synchronously with the second transmission component 300. This could lead to the second transmission component 300 spinning aimlessly. Adding the first detection unit allows the second transmission component 300 to be stopped promptly after the first transmission component 200 reaches its position, avoiding energy and mechanical losses from the second transmission component 300's movement and preventing wasted time during the lifting and lowering process of the first transmission component 200. Second, it can promptly detect situations where the first transmission component 200 fails to rise successfully, such as jamming or mechanical malfunctions. If no signal indicating that the component has reached its designated position is received within a certain time after the start of the lifting process, an alarm can be triggered.

[0022] In some other embodiments, as shown in FIG7, the drive mechanism further includes a second detection unit. The second detection unit can be connected to the main support 100 or installed on the first transmission member 200. The second detection unit is used to detect whether the cleaning component 500 is installed on the first transmission member 200. When the cleaning component 500 is installed, the second detection unit generates an installation completion signal, which indicates that the cleaning component 500 has been installed and the next step can be carried out, such as cleaning. This avoids the situation where the cleaning component 500 is forgotten to be installed or is not installed successfully, which would prevent normal cleaning from being achieved. The second detection unit can be a second micro switch, such as a combination of a spring and a touch sensor. When the cleaning component 500 is not installed on the first transmission component 200, the spring is detached from the touch sensor. When the cleaning component 500 is installed, the cleaning component 500 will squeeze the spring, causing the spring to contact the touch sensor, thereby generating an installation signal. Alternatively, the second detection unit can be a light blocking device, such as a combination of a second photoelectric emitter and a second light receiver. The second photoelectric emitter and the second light receiver are arranged opposite to each other. The second light receiver is used to receive the photoelectric signal emitted by the second photoelectric emitter, such as an infrared signal. When the cleaning component 500 is not installed on the first transmission component 200, there is no obstruction between the second photoelectric emitter and the second light receiver. After the cleaning component 500 is installed, a portion of its structure enters between the second photoelectric emitter and the second light receiver, thereby blocking the light emitted by the second photoelectric emitter. The second light receiver then generates an installation signal. This portion of the cleaning component 500 can be the area where it extends into the mounting cavity of the first transmission component 200. Alternatively, the second detection unit can be a second magnetic sensor 930, such as a Hall sensor. The cleaning component 500 is provided with a second magnetic component that matches the Hall sensor. After the cleaning component 500 is installed, the second magnetic component enters the detection range of the Hall sensor, which detects the magnetism and generates an installation signal. The second detection unit can also take other forms, designed to detect whether the cleaning component 500 is installed. It can issue an installation signal when the cleaning component 500 is installed on the first transmission component 200. The second inspection section can prevent the cleaning component 500 from being missing and avoid ineffective cleaning by the self-cleaning equipment without the cleaning component 500.

[0023] The drive mechanism, self-cleaning device, and self-cleaning system proposed in this disclosure, when the first transmission component is driven to rotate by the power component, drive the first and second transmission components to move relative to each other through the interaction between the first and second transmission components, as well as the interaction between the second transmission component and the main support body. This causes the first transmission component to rise or fall, thereby achieving the lifting and lowering drive of the cleaning component. When the relative position of the first transmission component reaches the cleaning position, the interaction between the first and second transmission components drives them to rotate synchronously. This achieves the lifting, lowering, and rotation of the cleaning component driven by a single power component, reducing the number of drive components, simplifying the structure of the self-cleaning device, and reducing production costs and drive burden.

[0024] In one embodiment, a second frictional force exists between the first transmission member 200 and the second transmission member 300, and the first frictional force is greater than the second frictional force.

[0025] Controlling the rotation of the first transmission component 200 results in low friction between the threaded connection of the first transmission component 200 and the second transmission component 300, while the friction between the second transmission component 300 and the main support body 100 is high. Consequently, the second transmission component 300 and the main support body 100 will not move relative to each other, or the relative movement will be minimal. Meanwhile, the first transmission component 200 and the second transmission component 300 will move more smoothly in the circumferential direction relative to each other.

[0026] The first transmission member 200 is used to rotate under the drive of the power assembly 400, and the first transmission member 200 is used to interact with the second transmission member 300 through rotation, applying a vertical force while moving in the circumferential direction. This can be achieved by providing a first actuating part 211 and a second actuating part 311 on the first transmission member 200 and the second transmission member 300, respectively. The first actuating part 211 and the second actuating part 311 can be of various types, as long as they can drive the first transmission member 200 to rise and fall when the second transmission member 300 moves.

[0027] If at least one of the first action part 211 and the second action part 311 includes an action ramp, when the first transmission member 200 rotates, the first action part 211 and the second action part 311 are used to cooperate with each other through the action ramp to make the first transmission member 200 rise or fall.

[0028] The inclined plane is the surface that provides both lifting and lowering forces to the first and second acting parts 211 when they move relative to each other in the circumferential direction. Alternatively, it can be interpreted as an inclined plane that spirals upwards or downwards in the circumferential direction. Both the first and second acting parts 211 may include an inclined plane, but with different lengths. Alternatively, one of the first and second acting parts 211 may include an inclined plane, while the other may include a rolling element or slider for rolling or sliding relative to the inclined plane. The rolling element may be a roller or a shaft, which, through rolling connection to the inclined plane, can further reduce the second frictional force. Alternatively, the slider may be a block-shaped, columnar, or other protrusion.

[0029] In one embodiment, the number of the first actuating part 211 and the second actuating part 311 can both be one. Alternatively, the number of the first actuating part 211 and the second actuating part 311 can be the same, arranged in a one-to-one correspondence, and there can be multiple first actuating parts 211 and multiple second actuating parts 311. The multiple first actuating parts 211 are circumferentially distributed around the rotation axis of the first transmission member 200, and the multiple second actuating parts 311 are circumferentially distributed around the rotation axis of the second transmission member 300, thereby ensuring that the action of the first actuating parts 211 and the second actuating parts 311 balances the force on the first transmission member 200 and the second transmission member 300 in the circumferential direction, and avoids skewness.

[0030] In a more specific embodiment, one of the first actuating part 211 and the second actuating part 311 is threaded, and the other of the first actuating part 211 and the second actuating part 311 can be a chuck with an actuating bevel, the chuck being embedded between the helical surfaces; or, the other of the first actuating part 211 and the second actuating part 311 can be simply a smaller chuck without an actuating bevel. The first transmission member 200 and the second transmission member 300 are threadedly connected, and the first transmission member 200 is used to rotate relative to the second transmission member 300 to drive the first transmission member 200 to rise and fall through the thread.

[0031] Due to the threaded design, the circumferential movement will generate a vertical pushing force, causing the first transmission component 200 to be pushed up or down.

[0032] Alternatively, in another embodiment, at least one of the first action part 211 and the second action part 311 is an action groove, and the other of the first action part 211 and the second action part 311 is used to be embedded in the action groove, and the action slope is one side of the groove wall of the action groove.

[0033] In one embodiment, the second end includes a first sleeve 210, and the second transmission member 300 includes a second sleeve 310. The first sleeve 210 is provided with a first working part 211, and the second sleeve 310 is provided with a second working part 311. The first sleeve 210 and the second sleeve 310 are sleeved together.

[0034] In an embodiment where one of the first working part 211 and the second working part 311 is a thread, and there are multiple threads, and the other is a chuck, after the first sleeve 210 and the second sleeve 310 are fitted together, the chuck will be embedded in the thread. There can be four threads, that is, four threads are formed, and there are four chucks, each corresponding to one thread. By setting multiple threads, the movement between the first sleeve 210 and the second sleeve 310 can be more stable and less prone to shaking. In the embodiment shown in Figures 2 to 4 and Figure 6, the outer wall of the first sleeve 210 is provided with threads, and the inner wall of the second sleeve 310 is provided with chucks, or the inner wall of the second sleeve 310 is provided with threads, and the outer wall of the first sleeve 210 is provided with chucks.

[0035] In one embodiment, one of the first actuating part 211 and the second actuating part 311 is connected to the actuating member 212. For example, in an embodiment where one of the first actuating part 211 and the second actuating part 311 is threaded, the actuating member 212 is provided at the end of the thread. When the first transmission member 200 is in the clean position, the chuck abuts against the actuating member 212, so that the first transmission member 200 drives the second transmission member 300 to rotate synchronously. Alternatively, in an embodiment where at least one of the first actuating part 211 and the second actuating part 311 is an actuating groove, the actuating member 212 can be regarded as the inner wall surface of the actuating groove facing the actuating inclined surface.

[0036] The actuating element 212 may be located only at the end of one end of the thread and used only to interact with the chuck to make the first transmission element 200 rotate synchronously when it is in the clean position. Alternatively, in some embodiments, the actuating element 212 may be located at the ends of both ends of the thread, with one end used to make the first transmission element 200 rotate synchronously with the second transmission element 300 when it is in the clean position, and the other end used to limit the maximum height to which the first transmission element 200 rises.

[0037] More specifically, in an embodiment where the first actuating part 211 is a thread and the second actuating part 311 is a chuck, and the outer wall of the first sleeve 210 is provided with a thread, and the first sleeve 210 is used for lifting and lowering, as shown in Figures 2 to 4 and Figure 6, the actuating member 212 may be located only at the end of the thread away from the cleaning member 500, or in other words, the actuating member 212 is located at the uppermost end of the thread 211. Then, during the descent of the first sleeve 210, the actuating member 212 moves toward the chuck located above. When the first transmission member 200 and the second transmission member 300 are in the cleaning position, the actuating member 212 will contact the chuck located above. Then, when the first sleeve 210 continues to rotate in the same direction, the first sleeve 210 will not descend, and the actuating member 212 will push the chuck, causing the second sleeve 310 to rotate synchronously. In some embodiments, an actuating element 212 can also be provided at the lowest end of the thread. Then, during the upward movement of the first sleeve 210, the actuating element 212 moves toward the lower chuck. When the first sleeve 210 moves to the highest position, the lower actuating element 212 will contact the chuck, thereby preventing the first sleeve 210 from rising excessively and playing a limiting role.

[0038] In another embodiment, the second actuating part 311 is a thread, and the first actuating part 211 is a chuck. The inner wall of the second sleeve 310 is provided with a thread, and in the embodiment where the first sleeve 210 is used for lifting, the actuating member 212 is located at the end of the thread near the cleaning member 500, or in other words, the actuating member 212 is located at the lower end of the thread. Then, during the descent of the first sleeve 210, the chuck moves toward the lower actuating member 212. When the first transmission member 200 and the second transmission member 300 are in the cleaning position, the chuck will contact the lower actuating member 212. Then, when the first sleeve 210 continues to rotate in the same direction, the first sleeve 210 will not descend, and the chuck will push the lower actuating member 212, causing the second sleeve 310 to rotate synchronously. In some embodiments, an actuating element 212 may also be provided at the uppermost end of the thread 211. Then, during the upward movement of the first sleeve 210, the chuck moves toward the actuating element 212 located above. When the first sleeve 210 moves to the highest position, the chuck will contact the actuating element 212 located above, thereby preventing the first sleeve 210 from rising excessively and playing a limiting role.

[0039] It is understood that in embodiments where the clamp head 311 has four threads and the thread 211 can have four threads, the ends of the four threads are respectively provided with an actuating element 212. The actuating element 212 can be integrally formed with the first sleeve 210 or the second sleeve 310. Alternatively, in some embodiments, as shown in Figures 4 and 6, the drive mechanism also includes an upper cover 2121, the actuating element 212 is connected to the upper cover 2121, and the upper cover 2121 is connected to the first sleeve 210, so that the actuating element 212 is located at the end of the thread, which facilitates processing.

[0040] In the aforementioned embodiment where the first detection unit includes a first photoelectric emitter 910 and a first light receiver 920, the upper cover 2121 is fastened to the top edge of the first sleeve 210, thereby blocking the light from the first photoelectric emitter 910 and the first light receiver 920 after the first transmission member 200 is in position.

[0041] During use, the power assembly 400 drives the first transmission member 200 to rotate relative to the main support body 100 in the forward rotation direction, such as by the motor of the power assembly 400 rotating forward. Since the second transmission member 300 remains stationary (due to the friction between the second transmission member 300 and the main support body 100 being greater than the friction between the first action part 211 and the second action part 311), the second action part 311 will move relative to the first action part 211. In embodiments where one of the first action part 211 and the second action part 311 is threaded, the chuck will move relative to the thread and press down on the thread, thereby driving the first transmission member 200 to descend vertically relative to the main support body 100, thus lowering the cleaning member 500. When the cleaning member 500 descends to its lowest position, the first transmission member 200 reaches the cleaning position. Since the motor of the power assembly 400 is still rotating forward, the first transmission member 200 will continue to rotate relative to the main support body 100 in the forward rotation direction. The chuck will act on the action member 212 at the lower end of the thread, thereby hindering the continued relative movement of the chuck and the thread. The first transmission member 200 and the second transmission member 300 will generate a rigid thrust, which will cause the second transmission member 300 to overcome the friction between itself and the main support body 100. Subsequently, the first transmission member 200 and the second transmission member 300 will rotate synchronously, and the cleaning member 500 will clean relative to the ground. That is, during the descent and cleaning process, the rotation direction of the first transmission member 200 does not change. Then, when cleaning is completed, or when a user instruction is received, or when an obstacle is detected, the cleaning member 500 needs to move upward to be stored or to avoid the obstacle. At this time, the power assembly 400 drives the first transmission member 200 to rotate relative to the main support body 100 in the opposite direction of the forward rotation, such as by reversing the motor of the power assembly 400. Since the second transmission component 300 remains stationary (due to the friction between the second transmission component 300 and the main support body 100 being greater than the friction between the chuck and the thread), the chuck will move in the opposite direction and disengage from the actuating member 212. The chuck will then move relative to the thread and lift the thread, thereby driving the first transmission component 200 to rise vertically relative to the main support body 100, thus raising the cleaning component 500. When the cleaning component 500 rises to its highest position, the chuck may act against the actuating member 212 at the upper end of the thread, thus hindering the continued relative movement between the chuck and the thread. The first transmission component 200 and the second transmission component 300 will generate a rigid thrust, which will cause the second transmission component 300 to overcome the friction between itself and the main support body 100, and the first transmission component 200 and the second transmission component 300 will move synchronously. It can be understood that at this time, the cleaning component 500 is in the storage position, or rotates at a higher position, until the program's set time is reached, at which point the power component 400 stops driving the first transmission component 200.Alternatively, in the aforementioned embodiment including a first detection unit, which comprises a first photoelectric emitter 910 and a first light receiver 920, when the first transmission member 200 rises to its position, the light between the first photoelectric emitter 910 and the first light receiver 920 will be blocked, thereby directly stopping the rotation of the first transmission member 200. This avoids unnecessary energy consumption and damping wear between the second transmission member 300 and the main support 100.

[0042] In one embodiment where the first transmission member 200 is raised or lowered, the second transmission member 300 is only movably connected to the main support body 100 in the circumferential direction. However, in the axial direction, or in other words, at its upper limit in the vertical direction, the second transmission member 300 cannot be raised or lowered. The first transmission member 200, on the other hand, needs to be movably connected to the power assembly 400 in the vertical direction. Since the power assembly 400 needs to drive the first transmission member 200 to rotate, the first transmission member 200 and the power assembly 400 need to be at their upper limits in the circumferential direction. Several embodiments of raising and lowering the first transmission member 200 will be described in more detail below.

[0043] The first transmission member 200 and the power assembly 400 have a circumferential transmission relationship and move relative to each other in the axial direction, or vertical direction. This can be achieved by the output shaft of the power assembly 400 extending vertically, with a vertically extending first engagement tooth on the output shaft, and a second engagement tooth on the first transmission member 200. The power assembly 400 engages with the first transmission member 200 through the first and second engagement teeth. When the output shaft rotates, it drives the first transmission member 200 to rotate. Since both the first and second engagement teeth extend vertically, the first transmission member 200 can move vertically relative to the power assembly 400, thereby achieving lifting and lowering. Alternatively, in another embodiment, as shown in Figures 7 to 9, the power assembly 400 includes a power member 410 and a third transmission member 420. The power member 410 and the third transmission member 420 are connected in a transmission manner. For example, the power member 410 can be a motor with a horizontally extending output shaft that directly engages with the third transmission member 420, or it can be indirectly connected to the third transmission member 420 through an additional gear. The third transmission component 420 is slidably connected to the first transmission component 200 in the axial direction and is positioned at the upper limit in the circumferential direction.

[0044] The third transmission component 420 allows the power component 410 to extend horizontally, fully utilizing the internal space of the self-cleaning device. Furthermore, the structure of the third transmission component 420 can be flexibly configured to achieve better transmission performance. In one embodiment, the second end includes a limiting portion 220, which is connected to the first sleeve 210. The limiting portion 220 is sleeved around the outer periphery of the third transmission component 420; alternatively, the third transmission component 420 is sleeved around the outer periphery of the limiting portion 220. Taking the third transmission component 420 sleeved on the outer periphery of the limiting part 220 as an example, the third transmission component 420 includes a cylindrical structure. Multiple first limiting surfaces 421 are distributed circumferentially on the inner wall of the third transmission component 420. The first limiting surfaces 421 can be convex arc-shaped surfaces. The outer contour of the limiting part 220 has a rod-shaped structure. Multiple second limiting surfaces 221, which are adapted to the inner wall of the third transmission component 420, are distributed circumferentially on the outer wall of the limiting part 220. The second limiting surfaces 221 can be concave arc-shaped surfaces. It can be understood that the surface shapes of the first limiting surfaces 421 and the second limiting surfaces 221 can be interchanged, or they can have other shapes, such as teeth. The limiting part 220 is inserted into the cylindrical structure of the third transmission component 420, and the sliding surfaces of the first limiting surfaces 421 and the second limiting surfaces 221 abut against each other to achieve circumferential limiting while allowing relative sliding in the axial direction. By having the third transmission member 420 sleeved around the outer periphery of the limiting part 220, an external force is applied to the circumference of the limiting part 220, causing it to rotate. This results in a more even force application and ensures that the limiting part 220 can only move in the vertical direction. This serves as a guide for the lifting and lowering of the limiting part 220, or the first transmission member 200, preventing it from wobbling. The implementation of the limiting part 220 sleeved around the outer periphery of the third transmission member 420 is similar to that of the third transmission member 420 sleeved around the outer periphery of the limiting part 220, and will not be described further.

[0045] The transmission connection between the power component 410 and the third transmission component 420 can be varied, as shown in Figure 9. The power assembly 400 also includes an intermediate transmission component 430, which can be one or more gears, and can be configured according to the distance and relative position between the power component 410 and the third transmission component 420. The power component 410 and the third transmission component 420 are connected by one or more gears, thereby achieving a transmission connection.

[0046] In an embodiment where the first transmission member 200 is used for lifting and lowering relative to the main support body 100, the second transmission member 300 is axially positioned above the main support body 100 and circumferentially damped. The frictional force between the second transmission member 300 and the main support body 100 is greater than the frictional force between the first transmission member 200 and the second transmission member 300, meaning the circumferential frictional force between the second transmission member 300 and the main support body 100 is greater than the frictional force between the chuck 311 and the thread 211 in the extension direction of the thread 211. The damped connection between the second transmission member 300 and the main support body 100 can be varied. In one embodiment, the drive mechanism further includes a damping bearing. The second transmission member 300 is connected to the main support body 100 via the damping bearing. The bearing resistance of the damping bearing is greater than the frictional force between the chuck 311 and the thread 211. The damping bearing is axially fixedly connected to both the second transmission member 300 and the main support body 100. In other embodiments, as shown in Figures 2 to 4 and Figure 6, the driving mechanism further includes a friction assembly 800, and the second transmission member 300 includes a flange 320. The flange 320 is connected to the second sleeve 310 of the second transmission member 300 and protrudes from the side wall of the second sleeve 310. The flange 320 is connected to the friction assembly 800. The flange 320 extends in the horizontal direction, so that the flange 320 is axially limited by the cooperation between the friction assembly 800 and the flange 320, thereby preventing the second sleeve 310 from moving axially.

[0047] In a more specific embodiment, the friction assembly 800 includes an upper friction member 810 and a lower friction member 820, with the upper friction member 810 and the lower friction member 820 respectively abutting against the flange 320 on both sides of the second transmission member 300 in the axial direction. This can increase the friction force and prevent the second transmission member 300 from rotating when the first transmission member 200 is raised or lowered.

[0048] In one embodiment, the friction assembly 800 further includes an elastic element 830, which is connected to at least one of the upper friction element 810 and the lower friction element 820. The elastic element 830 is used to apply a spring force to the upper friction element 810 and / or the lower friction element 820 to move closer to the flange 320. The elastic element 830 can be a spring, such as a spring connected only between the lower friction element 820 and the main support 100. The spring causes the lower friction element 820 and the upper friction element 810 to press against the flange 320, and the pressing pressure is moderate. When the lower friction element 820 and the upper friction element 810 wear, the spring ensures that the lower friction element 820 and the upper friction element 810 continuously provide effective friction force, thereby preventing the second transmission element 300 from rotating when the first transmission element 200 rises and falls.

[0049] In some other embodiments, as shown in Figures 10 to 12, the friction assembly 800 includes a lower friction member 820 and at least one actuating wheel 840, wherein the lower friction member 820 and the actuating wheel 840 are respectively abutted against the flange 320 on both sides of the second transmission member 300 in the axial direction by the flange 320.

[0050] The lower friction member 820 cooperates with the actuating wheel 840, supporting the flange 320 from both sides, thereby axially limiting the second transmission member 300. The lower friction member 820 provides circumferential damping for the flange 320, or the second transmission member 300. When the second transmission member 300 moves with the first transmission member 200, the actuating wheel 840 rolls along the flange 320, while the flange 320 slides against the lower friction member 820. Compared to the embodiment using the upper friction member 810, using rolling instead of sliding reduces wear on the side of the flange 320 opposite to the actuating wheel 840.

[0051] In one embodiment, the lower friction member 820 is closer to the cleaning member 500 than the actuating wheel 840. Specifically, the lower friction member 820 acts on the flange 320 from its bottom surface, while the actuating wheel 840 is in rolling contact with the top surface of the flange 320. During the cleaning process, the cleaning member 500 will interfere with the ground, generating an upward reaction force. This force, in turn, will apply an upward thrust to the second transmission member 300, causing the flange 320 to press upwards. Furthermore, in embodiments where an elastic member 830 is connected to the lower friction member 820, the lower friction member 820 will also press against the flange 320, causing it to press upwards. If an upper friction member 810 is used, the upward pressing of the flange 320 against the upper friction member 810 will increase the frictional force on the flange 320, resulting in a greater load on the second transmission member 300, increasing the driving load on the power member 410, and increasing energy consumption. By using an action wheel 840 instead of the upper friction component 810, and with the action wheel 840 and the flange 320 in a rolling connection, when the pressure on the flange 320 and the action wheel 840 increases, the force on the second transmission component 300 will not increase, thereby ensuring the endurance of the power component 410.

[0052] In one embodiment, there are multiple actuating wheels 840, which are evenly distributed in the circumferential direction of the second transmission member 300.

[0053] For example, there can be two actuating wheels 840, arranged on opposite radial sides of the second transmission component 300. Alternatively, there can be three, four, or more actuating wheels 840, which can ensure that the second transmission component 300 is subjected to uniform force in the circumferential direction and is not prone to skewing or jamming.

[0054] In one embodiment, the actuating wheel 840 is rotatably connected to the main support body 100. For example, the actuating wheel 840 can be an integral roller, and the roller is directly rotatably connected to the main support body 100 or connected via a bearing. Alternatively, the actuating wheel 840 includes a wheel body and a rotating shaft. The rotating shaft is connected to the main support body 100, which can be a fixed connection, such as a plug-in connection. The wheel body is rotatably connected to the rotating shaft. The wheel body can be connected to the rotating shaft via one or more bearings, or the wheel body can be directly rotatably connected to the rotating shaft.

[0055] In one embodiment, at least one of the contact surfaces of the actuating wheel 840 and the flange 320 is provided with a wear-resistant layer. The wear-resistant layer can be a thin coating and can have a certain degree of flexibility, thereby playing a role in shock absorption and wear resistance between the actuating wheel 840 and the flange 320.

[0056] In one embodiment, the main support 100 is provided with a mounting cavity 101, the two ends of the actuating wheel 840 are connected to the opposite side walls of the mounting cavity 101, and the actuating wheel 840 extends out of the mounting cavity 101 to abut against the flange 320.

[0057] As shown in Figure 12, the main support 100 has a mounting cavity 101, which has at least a bottom opening. Each actuating wheel 840 may correspond to a separate mounting cavity 101. The actuating wheel 840 is fixed by the inner wall of the mounting cavity 101, thus ensuring that the actuating wheel 840 is supported axially from both sides, guaranteeing its stable position and preventing vibration. Part of the structure of the actuating wheel 840 extends from the bottom opening of the mounting cavity 101 and interacts with the flange 320.

[0058] In the embodiment where the lower friction member 820 and the actuating wheel 840 are coupled, the lower friction member 820 can be connected to the elastic member 830. When the lower friction member 820 wears, due to the setting of the spring, the lower friction member 820 can be guaranteed to continuously provide effective friction force, thereby preventing the second transmission member 300 from rotating when the first transmission member 200 is raised or lowered.

[0059] In the aforementioned embodiment of the usage process, the power assembly 400 drives the first transmission member 200 to rotate relative to the main support body 100 in the positive rotation direction. Due to the pressure of the lower friction member 820 and the upper friction member 810 on the flange 320, the position of the second transmission member 300 remains unchanged. Subsequently, the chuck will interact with the thread, driving the first transmission member 200 to descend relative to the main support body 100 in the vertical direction. When the chuck interacts with the actuating member 212 at the lower end of the thread, the first transmission member 200 and the second transmission member 300 will generate a rigid thrust. The thrust will cause the second transmission member 300 to overcome the friction of the lower friction member 820 and the upper friction member 810, causing the flange 320 to slide relative to the lower friction member 820 and the upper friction member 810. Subsequently, the first transmission member 200 and the second transmission member 300 will rotate synchronously. When the cleaning component 500 needs to be moved upwards for storage or obstacle avoidance, the first transmission component 200 rotates in the opposite direction to the main support body 100. Due to the pressure of the lower friction component 820 and the upper friction component 810 on the flange 320, the position of the second transmission component 300 remains unchanged. The chuck will move relative to the thread and lift the thread, thereby driving the first transmission component 200 to rise vertically relative to the main support body 100, thus realizing the rise of the cleaning component 500. When the cleaning component 500 rises to the highest position, if the first detection part is not provided, the chuck will act with the action component 212 at the upper end of the thread. The first transmission component 200 and the second transmission component 300 will generate a rigid thrust. The thrust will cause the second transmission component 300 to overcome the friction of the lower friction component 820 and the upper friction component 810, causing the flange 320 to slide relative to the lower friction component 820 and the upper friction component 810. The first transmission component 200 and the second transmission component 300 move synchronously.

[0060] In one embodiment, the first transmission member 200 may consist only of a limiting portion 220 and a first sleeve 210 connected to each other, and the first sleeve 210 has a straight cylindrical structure. Alternatively, in other embodiments, as shown in Figures 2 to 4, the first transmission member 200 may further include a third sleeve 230, the first end of the first sleeve 210 of the first transmission member 200 is opposite to the cleaning member 500, the third sleeve 230 is connected to the first end of the first sleeve 210, the third sleeve 230 and the first sleeve 210 are spaced apart, and the second sleeve 310 of the second transmission member 300 is embedded between the third sleeve 230 and the first sleeve 210, and has a gap between it and the third sleeve 230.

[0061] The third sleeve 230 covers the outer periphery of the second sleeve 310 and the first sleeve 210 near the cleaning component 500. The end of the third sleeve 230 furthest from the cleaning component 500 is farther from the first end of the first sleeve 210 than the first end of the first sleeve 210. That is, even when the first transmission component 200 is in its lowest position, the top end of the third sleeve 230 is still higher than the bottom end of the first sleeve 210, which protects the gap between the second sleeve 310 and the first sleeve 210 and prevents dust, hair, etc. from entering between the second sleeve 310 and the first sleeve 210 and affecting the relative movement between the second sleeve 310 and the first sleeve 210.

[0062] Furthermore, as shown in Figures 1 to 6, the main support 100 includes a fourth sleeve 110, which is spaced apart from the second sleeve 310. The third sleeve 230 is embedded between the fourth sleeve 110 and the second sleeve 310, and has a gap between it and the fourth sleeve 110.

[0063] The fourth sleeve 110 covers the outer periphery of the third sleeve 230. The end of the third sleeve 230 furthest from the cleaning component 500 is farther from the cleaning component 500 than the end of the fourth sleeve 110 closest to the cleaning component 500. That is, even when the first transmission component 200 is in its lowest position, the bottom end of the fourth sleeve 110 is still higher than the top end of the third sleeve 230, thus protecting the gap between the third sleeve 230 and the second sleeve 310 and preventing dust, hair, etc. from entering between the third sleeve 230 and the second sleeve 310 and affecting the relative movement between the second sleeve 310 and the third sleeve 230.

[0064] In one embodiment, the driving mechanism further includes a magnetic attractor 900, which is connected to the first transmission member 200 and is used to magnetically connect with the magnetic component of the cleaning member 500. Alternatively, the driving mechanism further includes a magnetic component, which is connected to the first transmission member 200 and is used to magnetically connect with the magnetic attractor of the cleaning member 500.

[0065] The magnetic component 900 can be a metal that can be magnetically attracted, such as iron. The magnetic component can be a magnet.

[0066] For example, the cleaning component 500 includes a connecting rod and a cleaning component body. One end of the connecting rod is connected to the cleaning component body, and the other end of the connecting rod is provided with a magnetic component. The magnetic suction component 900 is disposed at the top end of the first sleeve 210 of the first transmission component 200. The connecting rod is inserted into the first sleeve 210, and the magnetic suction component 900 is attracted and fixed to the magnetic component.

[0067] In embodiments where the first detection unit includes a Hall sensor, the cleaning component 500 is connected to a magnetic component, which can detect whether the cleaning component 500 is connected, thus preventing the cleaning component 500 from falling off without being detected in time.

[0068] On the other hand, this disclosure provides a self-cleaning device, including a drive mechanism as described above, and a device body, wherein the drive mechanism is disposed on the device body.

[0069] The drive mechanism can be one, two, or more, depending on the needs. The power unit 400 can be used solely for the lifting and rotating drive of the cleaning component 500, or, in some embodiments, a more complex structure can be configured to enable the cleaning component 500 to swing horizontally. The self-cleaning device includes any of the aforementioned drive mechanisms, and the advantages of including any of the aforementioned drive mechanisms will not be elaborated here.

[0070] Furthermore, this disclosure provides a self-cleaning system, including the aforementioned self-cleaning device and a cleaning base station. The self-cleaning device is used to selectively dock at the cleaning base station. In some embodiments, the cleaning base station includes a docking space, and the self-cleaning device can move to the docking space to perform operations such as cleaning and replacing the cleaning component 500, replenishing the water tank, and charging. The self-cleaning system includes the aforementioned self-cleaning device, and the advantages of including the aforementioned self-cleaning device will not be elaborated here.

[0071] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of protection of the aforementioned patent application.

[0072] 100: Main support body 101: Installation cavity 110: Fourth Sleeve 200: First transmission component 210: First sleeve 211: First functional part 212: Functional Component 2121: Top Cover 220: Limiting part 221: Second limiting surface 230: Third sleeve 300: Second transmission component 310: Second sleeve 311: Card Head / Second Action Section 320: Flip-edge 400: Power Components 410: Power components 420: Third transmission component 421: First limiting surface 430: Intermediate transmission components 500: Cleaning parts 800: Friction Component 810: Upper friction component 820: Lower friction component 830: Elastic component 840: Action Wheel 900: Magnetic attachment 910: First photoelectric transmitter 920: First Light Receiver 930: Second magnetic sensor

[0073] none

Claims

1. A drive mechanism for a self-cleaning device, comprising: Main support body (100); First transmission member (200), the first transmission member (200) includes a first end and a second end, the second end being used to connect with the cleaning member (500); Second transmission member (300), the first transmission member (200) and the second transmission member (300) are movably connected, the second transmission member (300) is movably connected to the main support body (100) in the circumferential direction, and there is a first frictional force between the second transmission member (300) and the main support body (100); Power assembly (400), the power assembly (400) is pulsatorically connected to the first end, the power assembly (400) is used to drive the first transmission member (200) to rotate, so that the first transmission member (200) and the second transmission member (300) interact, thereby driving the first transmission member (200) to drive the cleaning member (500) to rise or fall, wherein the main support body (100) is fixedly connected to the outer shell of the self-cleaning device.

2. The drive mechanism as described in claim 1, wherein: The position of the first transmission member (200) includes a clean position; when the first transmission member (200) is in the clean position, the first transmission member (200) is used to drive the second transmission member (300) to rotate synchronously against the first frictional force.

3. The drive mechanism as described in claim 1, wherein: The first transmission member (200) and the second transmission member (300) are respectively provided with a first action part (211) and a second action part (311), which are used to interact with each other.

4. The drive mechanism as described in claim 3, wherein: At least one of the first action part (211) and the second action part (311) includes an action ramp. When the first transmission member (200) rotates, the first action part (211) and the second action part (311) cooperate with each other through the action ramp to make the first transmission member (200) rise or fall.

5. The drive mechanism as described in claim 4, wherein: Both the first action part (211) and the second action part (311) include the action slope; or, one of the first action part (211) and the second action part (311) includes the action slope, and the other of the first action part (211) and the second action part (311) includes a roller or a slider, which is used to roll or slide relative to the action slope.

6. The drive mechanism as described in claim 4, wherein: The number of the first functional part (211) and the second functional part (311) is the same, and the number of the first functional part (211) and the second functional part (311) is at least one.

7. The drive mechanism as described in claim 6, wherein: There are multiple first action parts (211) and multiple second action parts (311). The multiple first action parts (211) are circumferentially distributed around the rotation axis of the first transmission member (200), and the multiple second action parts (311) are circumferentially distributed around the rotation axis of the second transmission member (300).

8. The drive mechanism as described in claim 4, wherein: One of the first functional part (211) and the second functional part (311) is threaded; or, at least one of the first functional part (211) and the second functional part (311) is a functional groove, and the other of the first functional part (211) and the second functional part (311) is used to be embedded in the functional groove.

9. The drive mechanism as described in claim 1, wherein: The second end includes a first sleeve (210), and the second transmission member (300) includes a second sleeve (310); the first sleeve (210) is provided with a first working part (211), and the second sleeve (310) is provided with a second working part (311), and the first sleeve (210) and the second sleeve (310) are sleeved together.

10. The drive mechanism as described in claim 9, wherein: One of the first action part (211) and the second action part (311) is connected to an action member (212). When the first transmission member (200) is in the clean position, the other of the first action part (211) and the second action part (311) abuts against the action member (212) so that the first transmission member (200) drives the second transmission member (300) to rotate synchronously.

11. The drive mechanism as described in claim 1, wherein: There is a second frictional force between the first transmission member (200) and the second transmission member (300), and the first frictional force is greater than the second frictional force.

12. The drive mechanism as described in claim 1, wherein: The power assembly (400) includes a power component (410) and a third transmission component (420); the power component (410) is connected to the third transmission component (420) in a transmission connection, and the third transmission component (420) is slidably connected to the first transmission component (200) in the axial direction and is limited in the circumferential direction.

13. The drive mechanism as described in claim 12, wherein: The second end includes a limiting part (220), and the third transmission member (420) is sleeved on the outer periphery of the limiting part (220), or the limiting part (220) is sleeved on the outer periphery of the third transmission member (420).

14. The drive mechanism as described in claim 1, wherein: The second transmission component (300) is axially positioned relative to the main support body (100) and is damped in the circumferential direction.

15. The drive mechanism as described in claim 14, further comprising: Damping bearings; The second transmission component (300) is connected to the main support body (100) via the damping bearing.

16. The drive mechanism as described in claim 14, further comprising: Friction assembly (800); The second transmission member (300) includes a flange (320) which is connected to the second sleeve (310) of the second transmission member (300) and protrudes from the side wall of the second sleeve (310). The flange (320) is connected to the friction assembly (800).

17. The drive mechanism as described in claim 16, wherein: The friction assembly (800) includes an upper friction member (810) and a lower friction member (820), wherein the upper friction member (810) and the lower friction member (820) are respectively abutted by the flange (320) on both sides of the second transmission member (300) in the axial direction.

18. The drive mechanism as described in claim 17, wherein: The friction assembly (800) further includes an elastic element (830) connected to at least one of the upper friction element (810) and the lower friction element (820), the elastic element (830) being used to apply a spring force to the upper friction element (810) and / or the lower friction element (820) to move toward the flange (320).

19. The drive mechanism as described in claim 16, wherein: The friction assembly (800) includes a lower friction member (820) and at least one actuating wheel (840), wherein the lower friction member (820) and the actuating wheel (840) are respectively abutted by the flange (320) on both sides of the flange (320) in the axial direction of the second transmission member (300).

20. The drive mechanism as described in claim 19, wherein: The lower friction element (820) is closer to the cleaning element (500) than the actuating wheel (840).

21. The drive mechanism as described in claim 19, wherein: The number of the actuating wheels (840) is multiple, and the multiple actuating wheels (840) are evenly distributed in the circumferential direction of the second transmission member (300).

22. The drive mechanism as described in claim 19, wherein: The actuating wheel (840) is rotatably connected to the main support body (100); and / or, the actuating wheel (840) includes a wheel body and a rotating shaft, the rotating shaft is connected to the main support body (100), and the wheel body is rotatably connected to the rotating shaft; and / or, at least one of the contact surfaces of the actuating wheel (840) and the flange (320) is provided with a wear-resistant layer; and / or, the main support body (100) is provided with a mounting cavity (101), the two ends of the actuating wheel (840) are respectively connected to the opposite side walls of the mounting cavity (101), and a portion of the actuating wheel (840) extends out of the mounting cavity (101) to abut against the flange (320).

23. The drive mechanism as described in claim 19, wherein: The friction assembly (800) further includes an elastic element (830) connected to the lower friction element (820), the elastic element (830) being used to apply a spring force to the lower friction element (820) to move closer to the flange (320).

24. The drive mechanism as described in claim 8, wherein: The first transmission member (200) includes a third sleeve (230). The first end of the first sleeve (210) of the first transmission member (200) is opposite to the cleaning member (500). The third sleeve (230) is connected to the first end of the first sleeve (210). The third sleeve (230) and the first sleeve (210) are spaced apart. The second sleeve (310) of the second transmission member (300) is embedded between the third sleeve (230) and the first sleeve (210) and has a gap between them.

25. The drive mechanism as described in claim 24, wherein: When the first transmission member (200) is in the cleaning position, the end of the third sleeve (230) away from the cleaning member (500) is farther from the cleaning member (500) than the first end of the first sleeve (210).

26. The drive mechanism as described in claim 24, wherein: The main support (100) includes a fourth sleeve (110), which is spaced apart from the second sleeve (310). The third sleeve (230) is embedded between the fourth sleeve (110) and the second sleeve (310) and has a gap between it and the fourth sleeve (110).

27. The drive mechanism as described in claim 26, wherein: When the first transmission member (200) is in the cleaning position, the end of the third sleeve (230) that is away from the cleaning member (500) is farther away from the cleaning member (500) than the end of the fourth sleeve (110) that is closer to the cleaning member (500).

28. The drive mechanism as described in claim 1, further comprising: A magnetic suction component (900) is connected to the first transmission component (200), and the magnetic suction component (900) is used to magnetically connect with the magnetic component of the cleaning component (500); Alternatively, the driving mechanism may further include a magnetic element connected to the first transmission element (200), the magnetic element being used for magnetic connection with the magnetic attraction element (900) of the cleaning element (500).

29. The drive mechanism as described in claim 1, wherein: The cleaning component (500) includes at least one of a rotating mop and a side brush.

30. The drive mechanism as described in claim 1, further comprising: The first detection unit is used to generate a rising position signal when the first transmission member (200) rises to the highest position.

31. The drive mechanism as described in claim 30, wherein: The first detection unit includes a first photoelectric emitter (910) and a first light receiver (920). The first photoelectric emitter (910) and the first light receiver (920) are arranged opposite to each other. When the first transmission member (200) rises to the highest position, the first transmission member (200) blocks the light between the first photoelectric emitter (910) and the first light receiver (920) so that the first light receiver (920) generates the rising position signal.

32. The drive mechanism as described in claim 30, wherein: The first detection unit includes a first magnetic sensor, and the driving mechanism further includes a first magnetic element. The first magnetic element is disposed on the first transmission member (200) and / or the cleaning member (500). When the first transmission member (200) rises to the highest position, the first magnetic element enters the detection range of the first magnetic sensor, so that the first magnetic sensor generates the rising position signal.

33. The drive mechanism as described in claim 30, wherein: The first detection unit includes a first micro switch. When the first transmission member (200) rises to the highest position, the first transmission member (200) triggers the first micro switch to generate the rising position signal.

34. The drive mechanism as described in claim 1, further comprising: The second detection unit is used to generate an installation signal when the cleaning component (500) is installed onto the first transmission component (200).

35. The drive mechanism as described in claim 34, wherein: The second detection unit includes a second photoelectric emitter and a second light receiver, which are arranged opposite to each other. When the cleaning component (500) is installed on the first transmission component (200), the cleaning component (500) blocks the light between the second photoelectric emitter and the second light receiver so that the second light receiver generates the installation signal.

36. The drive mechanism as described in claim 34, wherein: The second detection unit includes a second magnetic sensor (930), and the drive mechanism also includes a second magnetic component. The second magnetic component is disposed on the cleaning component (500). When the cleaning component (500) is installed on the first transmission component (200), the second magnetic component enters the detection range of the second magnetic sensor (930) so that the second magnetic sensor (930) generates the installation signal.

37. The drive mechanism as described in claim 34, wherein: The second detection unit includes a second micro switch. When the cleaning component (500) is installed onto the first transmission component (200), the cleaning component (500) triggers the second micro switch to generate the installation signal.

38. A self-cleaning device comprising a drive mechanism as described in any one of claims 1 to 37, and a device body, the drive mechanism being disposed on the device body.

39. A self-cleaning system comprising the self-cleaning device as described in claim 38, and a cleaning base station.

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