Overload protection apparatus and cleaning device

Abstract

The present application discloses an overload protection apparatus and a cleaning device. By moving at least one of a first acting member and a second acting member, when at an acting position, transmission is achieved, and when at a clearance position, the transmission is disengaged, thereby achieving overload protection. The main technical solution of the present application is as follows: in the overload protection apparatus, a first transmission member comprises a first main body and a first acting member, and the second transmission member comprises a second main body and a second acting member; at least one of the first acting member and the second acting member has an acting position and a clearance position, and the first acting member is used for interacting with the second acting member, so that at least one of the first acting member and the second acting member is switched between the acting position and the clearance position. The present application is mainly used for overload protection.

Description

An overload protection device and cleaning equipment

[0001] The present application claims priority to the Chinese Patent Application No. 202410479599.5, filed on April 19, 2024, and entitled "An overload protection device and cleaning equipment", and the Chinese Patent Application No. 202420821253.4, filed on April 19, 2024, and entitled "An overload protection device and cleaning equipment", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of smart home, and in particular, to an overload protection device and cleaning equipment. BACKGROUND

[0003] In the process of mechanical transmission, the driving part is directly or indirectly connected with the driven part through the transmission connection structure, and then the power is transmitted to the driven part to drive the driven part to move. For example, on a common cleaning equipment, a cleaning mechanism and a walking mechanism are provided, the cleaning mechanism is used to rotate and interfere with the ground, and the walking mechanism is used to move the cleaning equipment, so as to move and clean. The cleaning mechanism, the walking mechanism and the like are driven parts on the cleaning equipment, which need to be driven by the driving part. When the driven part is hindered to move by external force or is impacted by external force, the driving part will be overloaded, which will damage the driving part and the transmission connection structure between the driving part and the driven part.

[0004] The applicant finds that in the prior art, position detection devices are used to detect the position of the driven part to avoid overload caused by excessive displacement, but they cannot guarantee the occurrence of overload when the driven part is impacted by external force. Clutches are also used to avoid the occurrence of overload by disconnecting the transmission between the driving part and the driven part, but the successful disconnection and locking of the clutch have high requirements for installation and friction plate performance, which increases the production cost and difficulty.

[0005] SUMMARY

[0006] To solve at least one of the above technical problems, the present application provides an overload protection device and cleaning equipment.

[0007] In one aspect, the present application provides an overload protection device, comprising:

[0008] a first transmission part, the first transmission part comprising a first main body and at least one first acting part;

[0009] a second transmission part, the second transmission part comprising a second main body and at least one second acting part;

[0010] At least one of the first acting member and the second acting member comprises an acting position and a giving position, the first acting member is used to interact with the second acting member, so that at least one of the first acting member and the second acting member is switched between the acting position and the giving position.

[0011] In another aspect, the application also provides a cleaning device comprising the overload protection device according to any one of the above. Advantages

[0012] The overload protection device and the cleaning device provided by the application, the first transmission member is connected with the driving member, the second transmission member is connected with the driven member, at least one of the first acting member of the first transmission member and the second acting member of the second transmission member can be moved under the action of external force, and then the first acting member and the second acting member can be synchronously moved by interacting in the moving direction when being in the acting position, and then the power transmission between the driving member and the driven member is realized. When the driven member is impacted or blocked by external force, the first transmission member and the second transmission member will be subjected to reverse force, and then the pressure between the first acting member and the second acting member is increased, so that at least one of them moves to the giving position, so that the first acting member and the second acting member are released from the mutual limiting relationship in the moving direction, and the relative movement is performed to release the external impact force or the transmission position of the driving member, so as to avoid overloading of the driving member and ensure the transmission performance. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a schematic view of the connection structure of the overload protection device, the driving member and the driven member provided by the embodiment of the application;

[0014] Fig. 2 is a schematic view of the structure of the overload protection device provided by the embodiment of the application in a first perspective;

[0015] Fig. 3 is a schematic view of the structure of the overload protection device provided by the embodiment of the application in a second perspective;

[0016] Fig. 4 is an exploded schematic view of the component structure of the overload protection device provided by the embodiment of the application;

[0017] Among them, the first transmission member-100, the first main body-110, the embedded groove-111, the first acting member-120, the second transmission member-200, the second main body-210, the second acting member-220, the second hollow-211, the transmission connecting member-300. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects taken by the application to achieve the predetermined application purpose, the specific implementation, structure, features and effects of the overload protection device according to the application will be described in detail as follows in combination with the drawings and preferred embodiments.

[0019] As shown in FIG. 1, the application provides an overload protection device, which can be used in various mechanical equipment, such as machine tools, automobiles, construction tools, and electrical appliances. For example, the overload protection device can be used in the transmission connection between the drill bit and the driving motor of an electric drill, or the transmission connection between the driving motor and the seasoning delivery wheel of an automatic cooking device, or the transmission between the driving member 10 and the driven member 20 of a cleaning device. The application will be described in detail with the overload protection device used in a cleaning device. The cleaning device can also be called a cleaning robot, a self-cleaning device, a cleaning machine, a sweeping robot, a floor washing machine, or a sweeping and mopping machine, which can automatically clean and collect debris without user operation. The driven member 20 is a component that is moved in the cleaning device, and the driving member 10 is a component that provides movement power for the driven member 20 in the cleaning device. The driving member 10 is used to drive the driven member 20 to move. The driving member 10 can be a motor or a component that is driven by the motor to move relative to the driven member 20. For example, the motor is connected to a driven member, and the driven member is connected to the driven member 20. The motor directly drives the driven member to move, and the driven member further drives the driven member 20 to move. The driven member can also be the driving member 10. The movement can be linear movement, rotation, or other forms of movement.

[0020] In combination with more specific structures, the cleaning device can further include a machine body, a movement system, a cleaning system, a sensing system, etc. In order to enable the cleaning device to adapt to more cleaning spaces and to make the machine body more stable and balanced, the machine body is usually flat and circular, or can also have other shapes, such as semicircular, square, etc. The sensing system is arranged on the machine body, and is used for sensing walls and obstacles, drawing a map, and determining a position when the machine body moves for cleaning. The movement system can include a plurality of moving wheels and a moving wheel driving member. The moving wheel driving member can be the active member 10, and the moving wheel can be the passive member 20. The moving wheel driving member and the moving wheel are drivingly connected through the overload protection device of the present application. The moving wheel driving member can drive the moving wheel to rotate, thereby avoiding the moving wheel driving member from being overloaded due to the moving wheel being hindered from rotating by external objects or being impacted by external forces. The cleaning system mainly includes a cleaning unit, a dust box, a suction fan, and a cleaning driving member. The cleaning unit can be a brush, a rubber brush, etc. The cleaning unit can be the passive member 20, and the cleaning driving member can be the active member 10. The cleaning driving member and the cleaning unit are drivingly connected through the overload protection device of the present application. The machine body has a dust suction port located behind the cleaning unit. The dust box is located on the air path between the suction fan and the dust suction port. The cleaning unit has a certain interference with the ground. The cleaning unit is used to rotate under the action of the cleaning driving member. In the rotating process, the garbage on the ground can be swept up and rolled into the dust suction port below, and then sucked into the dust box by the gas generated by the suction fan and drawn back to the dust box. Through the overload protection device, the cleaning unit can be prevented from being overloaded due to the moving wheel driving member being hindered from rotating by external objects or being impacted by external forces. In addition, according to needs, the cleaning unit can also be connected to a lifting mechanism, thereby being lifted relative to the robot body, so as to realize the obstacle crossing and storage of the ground obstacles. The lifting mechanism usually includes a lifting component and a lifting driving member. The lifting driving member and the lifting component can be connected through the overload protection device, thereby avoiding the lifting driving member from being overloaded due to the cleaning unit being hindered or the cleaning unit being impacted by external forces during the lifting process. Alternatively, in some other embodiments, the cleaning unit can also include two cleaning members. At least one of the two cleaning members is connected to a telescopic driving member, thereby realizing the telescoping of the cleaning unit. The telescopic driving member and the cleaning member can be connected through the overload protection device, thereby avoiding the telescopic driving member from being overloaded due to the cleaning unit being hindered or the cleaning member being impacted by external forces during the telescoping process. In addition, the cleaning device can also have other combinations of the active member 10 and the passive member 20. Here, the components for power transmission can be drivingly connected through the overload protection device of the present application.

[0021] As shown in FIGS. 1-4, the overload protection device includes a first transmission member 100, which includes a first body 110 and at least one first acting member 120.

[0022] The second transmission member 200 comprises a second body 210 and at least one second acting member 220.

[0023] At least one of the first acting member 120 and the second acting member 220 comprises an acting position and a giving-up position, and the first acting member 120 is used to interact with the second acting member 220 to switch at least one of the first acting member 120 and the second acting member 220 between the acting position and the giving-up position.

[0024] The first acting member 120 is connected with the first body 110, and the first body 110 is used to connect the driving member 10 to move in the moving direction under the driving of the driving member 10. The second acting member 220 is connected with the second body 210, and the second body 210 is used to connect the driven member 20.

[0025] The first acting member 120 is fixedly connected with the first body 110, and can be integrally formed. In the embodiment in which the driving member 10 is a motor, the first body 110 can be directly connected with the output shaft of the motor, such as eccentric mounting, and the first body 110 is used to rotate under the action of the driving member 10. Alternatively, the first body 110 can be indirectly connected with the output shaft of the motor through the cooperation of a gear and a rack, such as the first body 110 is provided with a rack, and the output shaft of the motor is connected with a gear, so that the first body 110 is used to move linearly under the action of the driving member 10. According to different moving modes of the first body 110, the first body 110 can have various shapes, such as in the embodiment in which the first body 110 is used to rotate, the first body 110 can be approximately disc-shaped; and in the embodiment in which the first body 110 is used to move linearly, the first body 110 can be strip-shaped.

[0026] The second acting member 220 is fixedly connected with the second body 210, and can be integrally formed. The first transmission member 100 is used to transmit the motion of itself to the second transmission member 200, such as in the embodiment in which the first body 110 is used to rotate, the second body 210 is used to passively rotate to drive the driven member 20 connected with the second body 210 to move. In the embodiment in which the first body 110 is used to move linearly, the second body 210 is used to passively move linearly to drive the driven member 20 connected with the second body 210 to move. The driven member 20 can be directly connected with the second body 210, so that when the second body 210 rotates, the driven member 20 rotates with the second body 210, and when the second body 210 moves linearly, the driven member 20 moves linearly with the second body 210. Alternatively, the driven member 20 and the second body 210 can be connected through the cooperation of a gear and a rack, so that when the second body 210 rotates, the driven member 20 can move linearly, or when the second body 210 moves linearly, the driven member 20 can rotate. Alternatively, the driven member 20 and the second body 210 can be connected through two gears to drive the driven member 20 to rotate when the second body 210 rotates.

[0027] The implementation that at least one of the first acting element 120 and the second acting element 220 can be switched between the acting position and the giving-way position can be achieved by means of body deformation. For example, the first body 110 has elasticity in a partial or overall region, and the first acting element 120 is pressed against the first body 110 under the action of the second acting element 220, so that the first body 110 is deformed, and then the first acting element 120 is moved from the acting position to the giving-way position, or the first body 110 restores its shape by elastic deformation, so that the first acting element 120 is moved from the giving-way position to the acting position. Alternatively, the second body 210 has elasticity in a partial or overall region, and the second acting element 220 is pressed against the second body 210 under the action of the first acting element 120, so that the second body 210 is deformed, and then the first acting element 120 is moved from the acting position to the giving-way position, or the second body 210 restores its shape by elastic deformation, so that the second acting element 220 is moved from the giving-way position to the acting position. Alternatively, the first body 110 and the second body 210 can both have elasticity in a partial or overall region, and the first acting element 120 and the second acting element 220 interact with each other, and the first acting element 120 and the second acting element 220 press or release the first body 110 and the second body 210, respectively, to switch between the acting position and the giving-way position. Alternatively, the first body 110 and the second body 210 can both have elasticity in a partial region or have no elasticity in an overall region, and at least one of the first acting element 120 and the second acting element 220 itself has elasticity, and the acting position and the giving-way position refer to the positions of any point on the first acting element 120 and the second acting element 220. For example, the first acting element 120 is an elastic element, and the first acting element 120 is deformed at least itself under the action of the second acting element 220, and then the first acting element 120 is moved from the acting position to the giving-way position, or the first acting element 120 restores its shape by elastic deformation, so that the first acting element 120 is moved from the giving-way position to the acting position. The implementation that the second acting element 220 is an elastic element will not be described herein.

[0028] As shown in FIG. 1, the position of the second acting element 220 includes the acting position and the giving-way position. In the acting position, the first acting element 120 and the second acting element 220 limit each other in the moving direction, such as in the implementation that the first body 110 rotates around the rotation shaft, the first acting element 120 and the second acting element 220 limit each other in the circumferential direction around the rotation shaft, and then drive the second body 210 to rotate coaxially. In the implementation that the first body 110 moves linearly, the first acting element 120 and the second acting element 220 limit each other in the direction of linear movement, and then drive the second body 210 to move synchronously.

[0029] When the first acting element 120 and the second acting element 220 are limited to each other and drive the second main body 210 to move, due to the inertia of the second main body 210 and the passive element 20, an external force is needed to drive the second main body 210 and the passive element 20 to move. In the normal transmission process, there will be a certain pressure between the first acting element 120 and the second acting element 220, but the pressure will not be too large. However, when the second main body 210 and the passive element 20 are hindered in the moving direction, such as moving to the limit position, or external force impact, etc., the reverse external force received by the first main body 110 and the second main body 210 will increase, which increases the pressure between the first acting element 120 and the second acting element 220. The first acting element 120 and the second acting element 220 are arranged in a shape, when the pressure increases, the first acting element 120 and the second acting element 220 interact to generate an acting force that makes the first acting element 120 and the second acting element 220 move away from each other, and then push one or both of the first acting element 120 and the second acting element 220 that can move to a position to make room, so that the first acting element 120 and the second acting element 220 are in a critical position where the positions are staggered. The first acting element 120 and the second acting element 220 make room for each other, and then realize the interruption of the transmission of the first main body 110 and the second main body 210. The first main body 110 can move freely, such as being impacted by an external force to move instantaneously and quickly, while the second main body 210 remains in the original moving state. Alternatively, the first main body 110 can stop, such as moving to the limit position, while the second main body 210 can continue to drive. When the first acting element 120 and the second acting element 220 are in the acting position, the connection relationship between the first acting element 120 and the second acting element 220 can be embedded connection, which will be described in detail below in combination with specific embodiments.

[0030] The overload protection device and the cleaning equipment provided by the embodiments of the present application, the first transmission element is connected to the driving element, the second transmission element is connected to the passive element, one of the first acting element of the first transmission element and the second acting element of the second transmission element can move under the action of an external force, and then can realize synchronous movement in the moving direction by interacting with each other in the acting position, and then realize the power transmission between the driving element and the passive element. When the passive element is impacted or hindered by an external force, the first transmission element and the second transmission element will be subjected to a reverse acting force, and then the pressure between the first acting element and the second acting element will increase, and at least one of them will move to a position to make room, so that the first acting element and the second acting element are released from the mutual limiting relationship in the moving direction and relatively move to release the external impact force or the driving position of the driving element, avoiding the overload of the driving element and ensuring the transmission performance.

[0031] In one embodiment, the second acting member 220 is in plurality, and the plurality of second acting members 220 are arranged in the moving direction and are connected to each other, and after the first acting member 120 is separated from the current second acting member 220, at least one of the first acting member 120 and the second acting member 220 is moved from the yielding position to the acting position, and the first acting member 120 acts on the adjacent second acting member 220 of the current second acting member 220; or, the first acting member 120 is in plurality, and the plurality of first acting members 120 are arranged in the moving direction and are connected to each other, and after the second acting member 220 is separated from the current first acting member 120, at least one of the first acting member 120 and the second acting member 220 is moved from the yielding position to the acting position, and the first acting member 120 acts on the adjacent first acting member 120 of the current first acting member 120.

[0032] For example, the position of the second acting member 220 includes the acting position and the yielding position, and after the second acting member 220 is moved to the yielding position under the action of the first acting member 120, the second acting member 220 will move relative to the first acting member 120, and then will pass the first acting member 120 and move to the side of the first acting member 120, so that after overload protection, the first transmission member 100 and the second transmission member 200 can still be normally transmitted, the first acting members 120 are arranged densely, and then after the second acting member 220 passes the current first acting member 120, the second acting member 220 can fall into the first acting member 120 adjacent to the current first acting member 120, and the second acting member 220 will be bounced back to the acting position by the elasticity of the second main body 210, and then will continue to act on the adjacent first acting member 120 to realize transmission. If the overload phenomenon still exists, the second acting member 220 will continue to be pressed by the first acting member 120, so that the second acting member 220 is moved to the yielding position again, and the above process is repeated until the overload disappears.

[0033] In the embodiment in which the first acting member 120 includes the acting position and the yielding position, in order to enable the first acting member 120 to move between the acting position and the yielding position, the first main body 110 can be an elastic main body, for example, can be integrally elastic, or can be processed by using multiple materials, and the local region connected with the first acting member 120 is elastic, so as to enable the first acting member 120 to move between the acting position and the yielding position.

[0034] Alternatively, the first body 110 is provided with a first hollow, the first acting member 120 is connected to the first body 110 on the side close to the second acting member 220, and the first hollow makes the first body 110 elastic. The first hollow can be in one-to-one correspondence with the first acting member 120, and can be in the shape of a strip or with an arc. The first hollow makes the first body 110 on both sides of the first hollow have a gap, so that the first body 110 deforms through the gap, and the first acting member 120 can move between the acting position and the giving-up position.

[0035] In the embodiment in which the second acting member 220 includes the acting position and the giving-up position, the second body 210 is elastic, or, as shown in FIGS. 2-4, the second body 210 is provided with a second hollow 211, the second acting member 220 is connected to the second body 210 on the side close to the first acting member 120, and the second hollow 211 makes the second body 210 elastic. For details, reference can be made to the foregoing embodiment of the first body 110 and the first acting member 120, which will not be described herein again.

[0036] The first body 110 can be driven to rotate or move linearly by the driving member 10, and the following will describe the specific embodiments corresponding to the two moving modes respectively:

[0037] In the embodiment in which the driving member 10 drives the first body 110 and the second body 210 to rotate around the rotation shaft, in the acting position, the first acting member 120 and the second acting member 220 are at least limited in the circumferential direction around the rotation shaft, so that the second body 210 can rotate synchronously with the first body 110. In the giving-up position, the first acting member 120 and the second acting member 220 at least give way to each other in the circumferential direction around the rotation shaft, so as to allow the second body 210 to be static when the first body 110 rotates due to reaching the limit position or the like, or allow the second body 210 to rotate when the first body 110 is static due to being impacted by external force.

[0038] The first acting member 120 and the second acting member 220 can be realized by various structures to interact in the circumferential direction around the rotation shaft,

[0039] Firstly, the first acting member 120 and the second acting member 220 are distributed in the same plane perpendicular to the rotation shaft, i.e., the first acting member 120 and the second acting member 220 correspond to the same position of the axial direction of the rotation shaft, but are different in distance from the rotation shaft, and at least one of the first acting member 120 and the second acting member 220 is used to move close to or away from the rotation shaft in the plane perpendicular to the rotation shaft, so as to switch between the acting position and the giving-up position. For example, only the position of the second acting member 220 includes the acting position and the giving-up position, and when the second acting member 220 moves close to the rotation shaft, it will move away from the first acting member 120, so as to realize the relative movement of the first acting member 120 and the second acting member 220 in the circumferential direction when moving to the giving-up position.

[0040] To realize the distribution of the first acting element 120 and the second acting element 220 in the same plane perpendicular to the rotation shaft, the following two implementation manners can be adopted: in one implementation manner, a first embedding groove 111 is formed on the first body 110, the first embedding groove 111 is a circular groove, the first acting element 120 is arranged on the groove wall of the first embedding groove 111, the second acting element 220 is located on the circumferential side of the second body 210, the second body 210 is embedded in the first embedding groove 111, so that the second acting element 220 interacts with the first acting element 120. More specifically, in the implementation manner that at least one second hollow 211 is formed on the aforementioned second body 210, the outer contour of the second body 210 is disc-shaped, and the outer diameter is smaller than the inner diameter of the first embedding groove 111, so that the second body 210 can be embedded in the first embedding groove 111, and there is a gap between the second body 210 and the inner wall of the first embedding groove 111. The second hollow 211 can be an arc-shaped hollow, and the gap between the second body 210 and the first embedding groove 111 provides a deformation space for the deformation of the second body 210 located on the side of the second hollow 211 close to the first acting element 120.

[0041] In the second implementation manner, a second embedding groove is formed on the second body 210, the second embedding groove is a circular groove, the second acting element 220 is arranged on the groove wall of the second embedding groove, the first acting element 120 is located on the circumferential side of the first body 110, the first body 110 is embedded in the second embedding groove, so that the first acting element 120 interacts with the second acting element 220. The specific implementation manner can refer to the description of the first embedding groove 111 formed on the first body 110.

[0042] Secondly, the first acting element 120 and the second acting element 220 are arranged in a stacking manner in the extension direction of the rotation shaft.

[0043] For example, the first acting element 120 and the second acting element 220 are distributed in the same circumferential surface around the rotation shaft, that is, the distance between the first acting element 120 and the second acting element 220 and the rotation shaft is the same, and the first acting element 120 and the second acting element 220 correspond to different positions of the rotation shaft in the axial direction, so as to realize the stacking arrangement in the axial direction. At least one of the first acting element 120 and the second acting element 220 is used to move in the axial direction of the rotation shaft, so as to switch between the acting position and the giving-up position. For example, only the position of the second acting element 220 includes the acting position and the giving-up position, and when the second acting element 220 moves along the rotation shaft, it will move away from the first acting element 120, and then when it moves to the giving-up position, the first acting element 120 and the second acting element 220 can relatively move in the circumferential direction.

[0044] In the embodiment where the first acting member 120 and the second acting member 220 are distributed on the same circumferential surface of the rotating shaft, the first main body 110 and the second main body 210 can be distributed in the axial direction of the rotating shaft, and the first acting member 120 and the second acting member 220 can be located between the first main body 110 and the second main body 210, for example, the first acting member 120 protrudes from the surface of the first main body 110 relative to the second main body 210, and the second acting member 220 protrudes from the surface of the second main body 210 relative to the first main body 110.

[0045] In one embodiment, the number of the first acting member 120 is multiple, and the multiple first acting members 120 are symmetrically arranged relative to the rotating shaft, and / or the number of the second acting member 220 is multiple, and the multiple second acting members 220 are symmetrically arranged relative to the rotating shaft. This can ensure the radial force balance of the first main body 110 and the second main body 210, and avoid the relative skewing caused by the unilateral radial force of the first main body 110 and the second main body 210. In a more specific embodiment, as shown in FIGS. 1-4, the second main body 210 is provided with two second hollows 211 symmetrically arranged relative to the rotating shaft, the position of the second acting member 220 includes an acting position and a yielding position, the number of the second acting member 220 is two, and the two second acting members 220 are symmetrically arranged relative to the rotating shaft and correspond to the middle position of the extension direction of the second hollow 211. The first main body 110 is fixed in shape, and the position of the first acting member 120 relative to the first main body 110 is fixed. The first main body 110 is provided with an embedded groove 111, the number of the first acting member 120 is multiple, the first acting member 120 is arranged along the circumferential direction of the inner wall of the embedded groove 111, and adjacent first acting members 120 are closely connected.

[0046] In the embodiment where the driving member 10 drives the linear movement of one of the first main body 110 and the second main body 210, in the acting position, the first acting member 120 and the second acting member 220 are limited at least in the direction of linear movement, and in the yielding position, the first acting member 120 and the second acting member 220 yield to each other at least in the direction of linear movement.

[0047] When the first body 110 and the second body 210 are both linearly moved, the first body 110 and the second body 210 can be straight strips, and the first acting member 120 and the second acting member 220 can both be a plurality of members. The plurality of first acting members 120 are distributed along the length direction of the first body 110 in a closely connected manner, and the plurality of second acting members 220 are distributed along the length direction of the second body 210 in a closely connected manner. Alternatively, the first body 110 can be rotated under the driving of the driving member 10, and the second body 210 is used for linear movement. In this case, the first body 110 is a disc, and the second body 210 is a straight strip. The first acting member 120 and the second acting member 220 are both a plurality of members. The plurality of first acting members 120 are distributed along the circumferential direction of the first body 110 in a closely connected manner, and the plurality of second acting members 220 are distributed along the length direction of the second body 210 in a closely connected manner.

[0048] The first acting member 120 and the second acting member 220 interact to move at least one of the first acting member 120 and the second acting member 220 to the position-avoiding position. The implementation manner can be various, and can be realized by the surface type of the mutual contact position of the first acting member 120 and the second acting member 220. For example, the first acting member 120 includes a first acting surface, and the second acting member 220 includes a second acting surface. Under the action of the reverse external force of the first body 110 and the second body 210, the first acting surface and the second acting surface slide relative to each other, so that at least one of the first acting member 120 and the second acting member 220 moves from the acting position to the position-avoiding position. The external force applied between the first acting surface and the second acting surface should satisfy that the first acting member 120 and the second acting member 220 push each other to move away from each other. For example, in an embodiment, one of the first acting surface and the second acting surface is an inner V-shaped surface, and the other is an outer V-shaped surface. The inner V-shaped surface and the outer V-shaped surface are matched in shape, and the inner V-shaped surface and the outer V-shaped surface abut at the acting position. The V-shaped surface can be arranged at the end of the first acting member 120 and the second acting member 220. Through the guiding action of the inner V-shaped surface and the outer V-shaped surface, at least one of the first acting member 120 and the second acting member 220 is forced to move to the position-avoiding position.

[0049] Alternatively, in another embodiment, one of the first action surface and the second action surface is a concave arc surface, and the other is a convex arc surface. The concave arc surface and the convex arc surface are matched in shape, and the concave arc surface and the convex arc surface abut at the action position. For example, the first action member 120 is provided with a concave arc surface on the end opposite to the first main body 110, and the second action member 220 is provided with a convex arc surface on the end opposite to the second main body 210. Through the arc surface action of the concave arc surface and the convex arc surface, compared with the V-shaped surface, the sharp corners on the first action surface and the second action surface are avoided, so that the first action member 120 can pass through the second action member 220 more smoothly, and there is no sharp corner jam. In addition, the first action surface and the second action surface abut at the action position, so that the position between the first action member 120 and the second action member 220 is more stable, and the transmission between the first main body 110 and the second main body 210 is more compact.

[0050] In an embodiment, the overload protection device further comprises a transmission connecting member 300, and the first main body 110 is provided with the transmission connecting member 300. The transmission connecting member 300 is used to connect the driving member 10. For example, the transmission connecting member 300 can be an eccentric connecting member, which is eccentrically installed with the output shaft of the driving member 10, so as to axially limit the first main body 110 and the output shaft of the driving member 10.

[0051] In addition, the second main body 210 is provided with the transmission connecting member 300, and the transmission connecting member 300 is used to connect the driven member 20. For example, the transmission connecting member 300 is a gear, which can be toothed with the driven member.

[0052] On the other hand, the application also provides a cleaning device comprising the overload protection device of any one of the above embodiments, which has the advantages of the overload protection device of any one of the above embodiments, and details are not repeated here.

[0053] The above describes only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An overload protection device, wherein, Comprising: a first transmission member (100) comprising a first body (110) and at least one first acting member (120); a second transmission member (200) comprising a second body (210) and at least one second acting member (220); at least one of the first acting member (120) and the second acting member (220) comprises an acting position and a yielding position, the first acting member (120) is configured to interact with the second acting member (220) to switch at least one of the first acting member (120) and the second acting member (220) between the acting position and the yielding position.

2. The overload protection device according to claim 1, wherein, in the acting position, the first acting member (120) and the second acting member (220) are mutually limited to synchronize the first body (110) and the second body (210); in the yielding position, the first acting member (120) and the second acting member (220) are mutually yielded to move the first body (110) relative to the second body (210).

3. The overload protection device according to claim 1, wherein, the second acting member (220) is in plurality, the plurality of the second acting members (220) are arranged in the moving direction of the second body (210) and are connected to each other, after the first acting member (120) is separated from the current second acting member (220), at least one of the first acting member (120) and the second acting member (220) is moved from the yielding position to the acting position, and the first acting member (120) interacts with the adjacent second acting member (220) of the current second acting member (220); and / or, the first acting member (120) is in plurality, the plurality of the first acting members (120) are arranged in the moving direction of the first body (110) and are connected to each other, after the second acting member (220) is separated from the current first acting member (120), at least one of the first acting member (120) and the second acting member (220) is moved from the yielding position to the acting position, and the first acting member (120) interacts with the adjacent first acting member (120) of the current first acting member (120).

4. The overload protection device according to claim 1, wherein, at least part of the first body (110) is deformable to switch the first acting member (120) between the acting position and the yielding position; and / or, at least part of the second body (210) is deformable to switch the second acting member (220) between the acting position and the yielding position; and / or, at least one of the first acting member (120) and the second acting member (220) is deformable.

5. The overload protection device according to claim 4, wherein, The first acting member (120) comprises the acting position and the giving position, The first main body (110) is elastic, Alternatively, a first hollow is formed on the first main body (110), and the first main body (110) deforms through the first hollow.

6. The overload protection device according to claim 4, wherein, The second acting member (220) comprises the acting position and the giving position, The second main body (210) is elastic, Alternatively, a second hollow (211) is formed on the second main body (210), and the second main body (210) deforms through the second hollow (211).

7. The overload protection device according to claim 1, wherein, The first main body (110) and the second main body (210) are used to rotate around a rotation shaft, the first acting member (120) and the second acting member (220) are limited at least in the circumferential direction around the rotation shaft in the acting position, and the first acting member (120) and the second acting member (220) give way to each other at least in the circumferential direction around the rotation shaft in the giving position.

8. The overload protection device according to claim 7, wherein, The first acting member (120) and the second acting member (220) are distributed in the same plane perpendicular to the rotation shaft; At least one of the first acting member (120) and the second acting member (220) is used to move close to or away from the rotation shaft in the plane perpendicular to the rotation shaft to switch between the acting position and the giving position.

9. The overload protection device according to claim 8, wherein, A first embedding groove (111) is formed on the first main body (110), the first embedding groove (111) is a circular groove, the first acting member (120) is arranged on the groove wall of the first embedding groove (111), the second acting member (220) is located on the circumferential side of the second main body (210), the second main body (210) is embedded in the first embedding groove (111), so that the second acting member (220) interacts with the first acting member (120); Alternatively, a second embedding groove is formed on the second main body (210), the second embedding groove is a circular groove, the second acting member (220) is arranged on the groove wall of the second embedding groove, the first acting member (120) is located on the circumferential side of the first main body (110), the first main body (110) is embedded in the second embedding groove, so that the first acting member (120) interacts with the second acting member (220).

10. The overload protection device according to claim 7, wherein, The first acting member (120) and the second acting member (220) are arranged in a stacked manner in the extension direction of the rotation shaft.

11. The overload protection device according to claim 10, wherein, The first acting member (120) and the second acting member (220) are located between the first main body (110) and the second main body (210).

12. The overload protection device according to claim 7, wherein, The first acting member (120) is in a plurality, and the plurality of first acting members (120) are symmetrically arranged relative to the rotating shaft. And / or, the second acting member (220) is in a plurality, and the plurality of second acting members (220) are symmetrically arranged relative to the rotating shaft.

13. The overload protection device according to claim 1, wherein, One of the first body (110) and the second body (210) is used for linear movement, and the first acting member (120) and the second acting member (220) are limited at least in the direction of linear movement in the acting position, and the first acting member (120) and the second acting member (220) are mutually given space at least in the direction of linear movement in the given space position.

14. The overload protection device according to claim 1, wherein, The first acting member (120) comprises a first acting surface, and the second acting member (220) comprises a second acting surface; Under the action of the reverse external force of the first body (110) and the second body (210), the first acting surface and the second acting surface slide relative to each other, so that at least one of the first acting member (120) and the second acting member (220) moves from the acting position to the given space position.

15. The overload protection device according to claim 14, wherein, One of the first acting surface and the second acting surface is an inner V-shaped surface, and the other is an outer V-shaped surface; Or, one of the first acting surface and the second acting surface is a concave arc surface, and the other is a convex arc surface.

16. The overload protection device according to claim 14, wherein, The shape of the first acting surface is matched with the second acting surface, and the first acting surface and the second acting surface are in surface abutment in the acting position.

17. The overload protection device of claim 1, wherein, The overload protection device further comprises: A transmission connecting member (300) is arranged on the first body (110), and the transmission connecting member (300) is used for connecting a driving member (10) of a cleaning device; And / or, the transmission connecting member (300) is arranged on the second body (210), and the transmission connecting member (300) is used for connecting a driven member (20) of a cleaning device.

18. The overload protection device according to claim 17, wherein, The transmission connecting member (300) comprises at least one of a gear, a bearing.

19. A cleaning apparatus wherein, The overload protection device comprises any one of the above claims 1-18.

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