Overload protection device and cleaning equipment

Abstract

According to the overload protection device and the cleaning equipment, at least one of a first acting piece and a second acting piece moves to achieve transmission at an acting position and is separated from transmission at a receding position, and then overload protection is achieved. According to the main technical scheme, in the overload protection device, a first transmission piece comprises a first main body and a first acting piece, and a second transmission piece comprises a second main body and a second acting piece; at least one of the first acting piece and the second acting piece comprises an acting position and a receding position, and the first acting piece is used for interacting with the second acting piece so that at least one of the first acting piece and the second acting piece can be switched between the acting position and the receding position. The overload protection device is mainly used for overload protection.

Description

Technical Field

[0001] The utility model relates to the technical field of smart home, in particular to an overload protection device and a cleaning device. Background Art

[0002] In the process of mechanical transmission, the driving part is directly or indirectly connected with the driven part through a 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 device, there is a cleaning mechanism and a traveling mechanism, etc. The cleaning mechanism is used to rotate and interfere with the ground, and cooperate with the traveling mechanism to move the cleaning device for moving cleaning. Such as the cleaning mechanism, the traveling mechanism, etc. are the driven parts on the cleaning device and need to be driven by the driving part. When the driven part is hindered from moving by an external force or the driven part is impacted by an 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.

[0003] In the prior art, a position detection device is used to detect the position of the driven part to avoid overload caused by excessive displacement, but it cannot guarantee the occurrence of overload when the driven part is impacted by an external force. There is also a clutch, which avoids the occurrence of overload by disengaging the transmission between the driving part and the driven part, but the successful separation and locking of the clutch have high requirements for the installation and the performance of the friction plate, which will increase the production cost and difficulty. Summary of the Utility Model

[0004] In view of this, to solve at least one of the above technical problems, the utility model provides an overload protection device and a cleaning device.

[0005] On the one hand, the utility model provides an overload protection device, including:

[0006] A first transmission part, the first transmission part includes a first main body and at least one first acting part, and the first main body is used to move under the action of an external force;

[0007] A second transmission part, the second transmission part includes a second main body and at least one second acting part;

[0008] At least one of the first acting part and the second acting part includes an acting position and a yielding position, and the first acting part is used to interact with the second acting part so that at least one of the first acting part and the second acting part switches between the acting position and the yielding position.

[0009] On the other hand, the utility model also provides a cleaning device, including the overload protection device as described in any one of the above.

[0010] The overload protection device and cleaning equipment proposed by the utility model are characterized in that the first transmission member is connected to the active member, and the second transmission member is connected to the passive 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 move under the action of an external force, and then when in the action position, they can interact with each other and move synchronously in the moving direction, thereby realizing power transmission between the active member and the passive member. When the passive member is hit or hindered by an external force, the first transmission member and the second transmission member will be subjected to a reverse force, thereby increasing the pressure between the first acting member and the second acting member, so that at least one of them moves to a yielding position, so that the first acting member and the second acting member release the mutual limiting relationship in the moving direction, and move relatively to release the external impact force or the transmission position of the active member, thereby avoiding overload of the active member and ensuring transmission performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the connection structure between an overload protection device and an active component and a passive component provided in an embodiment of the utility model;

[0012] Figure 2 A schematic structural diagram of an overload protection device provided by an embodiment of the utility model at a first viewing angle;

[0013] Figure 3 A schematic structural diagram of an overload protection device provided by an embodiment of the utility model at a second viewing angle;

[0014] Figure 4 An exploded schematic diagram of the composition structure of an overload protection device provided in an embodiment of the utility model;

[0015] Among them, the first transmission member 100, the first main body 110, the embedding 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, and the transmission connecting member 300. DETAILED DESCRIPTION

[0016] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the specific implementation method, structure, characteristics and effects of an overload protection device proposed according to the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0017] like Figure 1As shown in the figure, the embodiment of the present utility model provides an overload protection device, which can be used in the use scenarios of the transmission connection between the driving part and the driven part in various mechanical equipment, such as machine tools, automobiles, construction tools, electrical equipment, etc. For example, it can be used for the transmission connection between the drill bit and the driving motor of an electric drill, or for the transmission connection between the dosing wheel and the driving motor in an automatic cooking device, or for the transmission between the driving part 10 and the driven part 20 in a cleaning device, and no further examples will be given here. In this application, the overload protection device used in a cleaning device is taken as an example to specifically describe the overload protection device. The cleaning device can also be called a cleaning robot, a self-cleaning device, a sweeper, a floor sweeping robot, a floor washing machine, a mopping and sweeping machine, etc., and can automatically clean and collect sundries without the operation of a user. The driven part 20 is a part that is moved in the cleaning device, and the driving part 10 is a part that provides the moving power for the driven part 20 in the cleaning device, and the driving part 10 is used to drive the driven part 20 to move. The driving part 10 can be a motor or a part that moves actively relative to the driven part 20 driven by a motor. For example, the motor is connected to the driven part, and the driven part is connected to the driven part 20. The motor directly drives the driven part to move, and the driven part further drives the driven part 20 to move, then the driven part can also be used as the driving part 10. The movement can be linear movement, rotation or other forms of movement.

[0018] In combination with a more specific structure, the cleaning device may further include a machine body, a motion system, a cleaning system, and a sensing system. In order to enable the cleaning device to adapt to more cleaning spaces and the machine body to be more stable and balanced, the machine body is usually flat and round, or may also have other shapes, such as semicircular, square, etc. The sensing system is arranged on the machine body for sensing walls and obstacles, drawing maps, and determining the position when the machine body moves and cleans. The motion system may include a plurality of moving wheels and a moving wheel driving member. The moving wheel driving member may be an active member 10, and the moving wheel is a passive member 20. The moving wheel driving member and the moving wheel are connected by the overload protection device of the present application. The moving wheel driving member can drive the moving wheel to rotate, thereby preventing the moving wheel from being blocked from rotating by external objects or being overloaded by the moving wheel driving member caused by external force impact. The cleaning system mainly includes a cleaning unit, a dust box, an exhaust fan and a cleaning drive. The cleaning unit can be a brush, a rubber brush, etc. The cleaning unit can be a passive component 20, and the cleaning drive is an active component 10. The cleaning drive and the cleaning unit are connected by transmission through the overload protection device of the present application. The machine body has a dust suction port located behind the cleaning unit, and the dust box is located on the wind path between the exhaust 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 drive. During the rotation, the garbage on the ground can be swept up and rolled to the bottom of the dust suction port, and then sucked into the dust box by the gas generated by the exhaust fan and drawn back to the dust box. The overload protection device can prevent the cleaning unit from being hindered from rotating by foreign objects or from being overloaded by the moving wheel drive caused by external force impact. In addition, as needed, the cleaning unit can also be connected to a lifting mechanism, and then it can be lifted and lowered relative to the robot body to achieve the surmounting and storage of ground obstacles. The lifting mechanism usually includes a lifting component and a lifting drive component. The lifting drive component and the lifting component can be connected through an overload protection device, thereby avoiding the cleaning unit from being obstructed during the lifting process and the cleaning unit from being hit by an external force, which causes the lifting drive component to be overloaded. Alternatively, in some other embodiments, the cleaning unit can also have two cleaning components, at least one of which is connected to a telescopic drive component, thereby achieving the telescopic movement of the cleaning unit. The telescopic drive component and the cleaning component can be connected through an overload protection device, thereby avoiding the cleaning unit from being obstructed during the telescopic movement and the cleaning component from being hit by an external force, which causes the telescopic drive component to be overloaded. In addition, there can be other combinations of active components 10 and passive components 20 on the cleaning device, which will not be described one by one here. The components that are intended to transmit power through transmission can all be connected through the overload protection device of the present application.

[0019] like Figures 1-4 As shown, the overload protection device comprises: a first transmission member 100, the first transmission member 100 comprises a first main body 110 and at least one first action member 120;

[0020] The second transmission member 200 includes a second main body 210 and at least one second acting member 220;

[0021] At least one of the first acting member 120 and the second acting member 220 includes an acting position and a yielding position. The first acting member 120 is configured to interact with the second acting member 220 so that at least one of the first acting member 120 and the second acting member 220 switches between the acting position and the yielding position.

[0022] Wherein, the first acting member 120 is connected to the first main body 110, and the first main body 110 is configured to be connected to the driving member 10 to move in the moving direction under the drive of the driving member 10. The second acting member 220 is connected to the second main body 210, and the second main body 210 is configured to be connected to the driven member 20.

[0023] The first acting member 120 is fixedly connected to the first main body 110 and may be integrally formed. In an embodiment where the driving member 10 is a motor, the first main body 110 may be directly connected to the output shaft of the motor. For example, eccentric mounting may be adopted, and the first main body 110 is configured to rotate under the action of the driving member 10. Alternatively, the first main body 110 may be indirectly connected to the output shaft of the motor through the cooperation of a gear and a rack. For example, a rack is provided on the first main body 110, and the output shaft of the motor is connected to the gear, then the first main body 110 is configured to linearly move under the action of the driving member 10. According to different moving manners of the first main body 110, the first main body 110 may have various shapes. For example, in an embodiment where the first main body 110 is configured to rotate, the first main body 110 may be approximately disc-shaped; in an embodiment where the first main body 110 is configured to linearly move, the first main body 110 may be bar-shaped.

[0024] The second acting member 220 is fixedly connected to the second main body 210 and may be integrally formed. The first transmission member 100 is configured to transmit its own motion to the second transmission member 200. For example, in an embodiment where the first main body 110 is configured to rotate, the second main body 210 is configured to be driven to rotate passively, and then drive the driven member 20 connected to the second main body 210 to move. In an embodiment where the first main body 110 is configured to linearly move, the second main body 210 is configured to be driven to linearly move passively, and then drive the driven member 20 connected to the second main body 210 to move. The driven member 20 and the second main body 210 may be directly connected. Then, when the second main body 210 rotates, the driven member 20 rotates accordingly; when the second main body 210 linearly moves, the driven member 20 linearly moves accordingly. Alternatively, it may also be that the driven member 20 and the second main body 210 are in cooperation through a gear and a rack, so that when the second main body 210 rotates, the driven member 20 may linearly move, or when the second main body 210 linearly moves, the driven member 20 may rotate. Alternatively, it may also be that the driven member 20 and the second main body 210 are engaged through two gears, and then when the second main body 210 rotates, the driven member 20 is driven to rotate.

[0025] The realization that at least one of the first acting member 120 and the second acting member 220 can switch between the acting position and the yielding position can be achieved by means of the deformation of the main body. For example, if the first main body 110 is partially or entirely elastic, the first acting member 120 is extruded by the second acting member 220, causing the first main body 110 to deform, and then causing the first acting member 120 to move from the acting position to the yielding position. Or, the first main body 110 restores its shape through elastic deformation, causing the first acting member 120 to move from the yielding position to the acting position. Or, the second main body 210 is partially or entirely elastic. The second acting member 220 is extruded by the first acting member 120, causing the second main body 210 to deform, and then causing the first acting member 120 to move from the acting position to the yielding position. Or, the second main body 210 restores its shape through elastic deformation, causing the second acting member 220 to move from the yielding position to the acting position. Or, it can also be that both the first main body 110 and the second main body 210 are partially or entirely elastic. The first acting member 120 and the second acting member 220 interact with each other. The first acting member 120 and the second acting member 220 respectively extrude or release the first main body 110 and the second main body 210 to switch between the acting position and the yielding position. Or, it can also be that both the first main body 110 and the second main body 210 are at least partially elastic or entirely non-elastic, and at least one of the first acting member 120 and the second acting member 220 itself is elastic. Then the acting position and the yielding position refer to the positions of any point on the first acting member 120 and the second acting member 220. For example, if the first acting member 120 is an elastic member, the first acting member 120 deforms at least itself under the action of the second acting member 220, and then causes the first acting member 120 to move from the acting position to the yielding position. Or, the first acting member 120 restores its shape through elastic deformation, causing the first acting member 120 to move from the yielding position to the acting position. The implementation manner in which the second acting member 220 is an elastic member will not be elaborated here.

[0026] As Figure 1 shown in [reference], the positions of the second acting member 220 include the acting position and the yielding position. In the acting position, the first acting member 120 and the second acting member 220 are mutually limited in the moving direction. For example, in the implementation manner where the first main body 110 rotates around the rotating shaft, the first acting member 120 and the second acting member 220 are limited in the circumferential direction around the rotating shaft, and then drive the second main body 210 to rotate coaxially. In the implementation manner where the first main body 110 moves linearly, the first acting member 120 and the second acting member 220 are limited in the linear moving direction, and then drive the second main body 210 to move synchronously.

[0027] When the first acting member 120 and the second acting member 220 limit each other and then drive the second main body 210 to move, since the second main body 210 and the passive member 20 have inertia, a certain external force is required to drive the second main body 210 and the passive member 20 to move. During normal transmission, there will be a certain pressure between the first acting member 120 and the second acting member 220, but the pressure will not be too large. However, when the second body 210 and the passive member 20 are hindered in the moving direction, such as moving to the extreme position or being hit by external force, the reverse external force on the first body 110 and the second body 210 will increase, which increases the pressure between the first acting member 120 and the second acting member 220. The shapes of the first acting member 120 and the second acting member 220 are set so that when the pressure increases, the interaction between the first acting member 120 and the second acting member 220 generates a force that causes the first acting member 120 and the second acting member 220 to move away from each other, thereby pushing one or two of the first acting member 120 and the second acting member 220 that can move to a yielding position, so that the first acting member 120 and the second acting member 220 are in a critical position where their positions are staggered, and the first acting member 120 and the second acting member 220 give way to each other, thereby realizing the interruption of transmission between the first body 110 and the second body 210, and the first body 110 can move freely, such as moving rapidly and instantaneously when hit by external force, while the second body 210 maintains its original moving state. Alternatively, the first body 110 may stop, such as moving to the limit position, while the second body 210 may continue to drive. When the first action member 120 and the second action member 220 are in the action position, the connection relationship between the first action member 120 and the second action member 220 may be an embedded connection, which will be described in detail below in conjunction with specific embodiments.

[0028] The overload protection device and cleaning equipment proposed in the embodiment of the utility model are characterized in that the first transmission member is connected to the active member, and the second transmission member is connected to the passive member. One of the first acting member of the first transmission member and the second acting member of the second transmission member can move under the action of an external force, and then when in the action position, they can interact with each other and move synchronously in the moving direction, thereby realizing power transmission between the active member and the passive member. When the passive member is hit or obstructed by an external force, the first transmission member and the second transmission member will be subjected to a reverse force, thereby increasing the pressure between the first acting member and the second acting member, so that at least one of them moves to a yielding position, so that the first acting member and the second acting member release the mutual limiting relationship in the moving direction, and move relatively to release the external impact force or the transmission position of the active member, thereby avoiding overload of the active member and ensuring transmission performance.

[0029] In one implementation, the number of the second acting members 220 is plural. The plural second acting members 220 are arranged in the moving direction, and adjacent second acting members 220 are connected. After the first acting member 120 disengages from the current second acting member 220, at least one of the first acting member 120 and the second acting member 220 moves from the yielding position to the acting position, and the first acting member 120 acts on the second acting member 220 adjacent to the current second acting member 220; or, the number of the first acting members 120 is plural. The plural first acting members 120 are arranged in the moving direction, and adjacent first acting members 120 are connected. After the second acting member 220 disengages from the current first acting member 120, at least one of the first acting member 120 and the second acting member 220 moves from the yielding position to the acting position, and the first acting member 120 acts on the first acting member 120 adjacent to the current first acting member 120.

[0030] Taking the position of the second acting member 220 including the acting position and the yielding position as an example, after the second acting member 220 moves 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 move past the first acting member 120 and move to one side of the first acting member 120. To enable the first transmission member 100 and the second transmission member 200 to still transmit power normally after overload protection, the first acting members 120 are densely arranged. Then, after the second acting member 220 moves past the current first acting member 120, it can fall into the first acting member 120 adjacent to the current first acting member 120. The second acting member 220 will return to the acting position through the elastic rebound of the second main body 210, and then continue to act on the adjacent first acting member 120 to achieve power transmission. If there is still an overload phenomenon, the second acting member 220 will continue to be squeezed by the first acting member 120, causing the second acting member 220 to move to the yielding position again, and so on until the overload disappears.

[0031] In the implementation where the first acting member 120 includes the acting position and the yielding position, 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, it can be elastically integral, or made of multiple materials, and the local area connected with the first acting member 120 has elasticity, thereby enabling the first acting member 120 to move between the acting position and the yielding position.

[0032] Alternatively, a first hollow is provided on the first main body 110, and the first acting member 120 is connected to the first main body 110 on the side of the first hollow close to the second acting member 220. The first hollow makes the first main body 110 elastic. The first hollow and the first acting member 120 may have a one-to-one correspondence. The first hollow may be strip-shaped or have a curvature. The first hollow creates a gap between the first main body 110 on both sides of the first hollow, thereby realizing deformation through the gap, and then enabling the first acting member 120 to move between the acting position and the retracted position.

[0033] In the embodiment where the second acting member 220 includes an acting position and a retracted position, the second main body 210 is elastic, or, as Figures 2-4 shown, a second hollow 211 is provided on the second main body 210, and the second acting member 220 is connected to the second main body 210 on the side of the second hollow 211 close to the first acting member 120. The second hollow 211 makes the second main body 210 elastic. For details, reference may be made to the embodiment of the first main body 110 and the first acting member 120 described above, and details will not be repeated here.

[0034] The first main body 110 can be driven to rotate or linearly move by the driving member 10. Specific descriptions of the corresponding embodiments of the two moving methods are as follows:

[0035] In the embodiment where the driving member 10 drives the first main body 110 and the second main body 210 to rotate around the rotating shaft, in the acting position, the first acting member 120 and the second acting member 220 are at least circumferentially limited around the rotating shaft, so that the second main body 210 can rotate synchronously with the first main body 110. In the retracted position, the first acting member 120 and the second acting member 220 are at least circumferentially retracted from each other around the rotating shaft, so that when the first main body 110 rotates, the second main body 210 is allowed to stop due to reaching the limit position or other reasons, or when the first main body 110 stops, the second main body 210 is allowed to rotate due to an external force impact.

[0036] The interaction between the first acting member 120 and the second acting member 220 in the circumferential direction around the rotating shaft can be realized by various structures.

[0037] First, the first acting member 120 and the second acting member 220 are distributed in the same plane perpendicular to the rotating shaft, that is, the first acting member 120 and the second acting member 220 correspond to the same position of the axial direction of the rotating shaft, but the distances from the rotating shaft are different, and at least one of the first acting member 120 and the second acting member 220 is used to move closer to or away from the rotating shaft in the plane perpendicular to the rotating shaft to switch between the action position and the yield position. If only the position of the second acting member 220 includes the action position and the yield position, when the second acting member 220 moves closer to the rotating shaft, it will move away from the first acting member 120, and then when it moves to the yield position, the first acting member 120 and the second acting member 220 can move relative to each other in the circumferential direction.

[0038] In order to achieve that the first action member 120 and the second action member 220 are distributed in the same plane perpendicular to the rotation axis, the following two embodiments can be adopted: In one embodiment, a first embedding groove 111 is provided on the first body 110, and the first embedding groove 111 is a circular groove. The first action member 120 is arranged on the groove wall of the first embedding groove 111, and the second action member 220 is located on the peripheral side of the second body 210. The second body 210 is embedded in the first embedding groove 111, so that the second action member 220 interacts with the first action member 120. More specifically, in the embodiment in which at least one second hollow 211 is provided on the 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 may 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 member 120 .

[0039] In the second embodiment, the second body 210 is provided with a second embedding groove, the second embedding groove is a circular groove, the second action member 220 is arranged on the groove wall of the second embedding groove, the first action member 120 is located on the peripheral side of the first body 110, and the first body 110 is embedded in the second embedding groove, so that the first action member 120 interacts with the second action member 220. The specific implementation method can refer to the description of the first embedding groove 111 provided on the first body 110.

[0040] Secondly, the first acting member 120 and the second acting member 220 are stacked in the extending direction of the rotating shaft.

[0041] If the first acting member 120 and the second acting member 220 are distributed in the same circumferential surface around the rotating shaft, that is, the first acting member 120 and the second acting member 220 are at the same distance from the rotating shaft, the first acting member 120 and the second acting member 220 correspond to different axial positions of the rotating shaft to achieve stacking in the axial direction. At least one of the first acting member 120 and the second acting member 220 is used to move in the axial direction of the rotating shaft to switch between the action position and the yield position. If only the position of the second acting member 220 includes the action position and the yield position, when the second acting member 220 moves along the rotating shaft, it will move away from the first acting member 120, and then when it moves to the yield position, the first acting member 120 and the second acting member 220 can move relative to each other in the circumferential direction.

[0042] The implementation mode in which the first acting member 120 and the second acting member 220 are distributed in the same circumferential surface around the rotating shaft can be that the first main body 110 and the second main body 210 are distributed in the axial direction of the rotating shaft, and 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, such as 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.

[0043] In one embodiment, there are multiple first action members 120, and the multiple first action members 120 are symmetrically arranged relative to the rotation axis, and / or there are multiple second action members 220, and the multiple second action members 220 are symmetrically arranged relative to the rotation axis. This can ensure that the radial force balance between the first body 110 and the second body 210 is avoided, thereby avoiding the relative skewness caused by the radial unilateral force of the first body 110 and the second body 210. In a more specific embodiment, as Figures 1-4 As shown, the second body 210 is provided with two second hollows 211 arranged symmetrically relative to the rotation axis, the position of the second action member 220 includes an action position and a yield position, the number of the second action members 220 is two, arranged symmetrically relative to the rotation axis, and corresponding to the middle position of the extension direction of the second hollow 211. The first body 110 has a fixed shape, and the position of the first action member 120 relative to the first body 110 is fixed. The first body 110 is provided with an embedding groove 111, the number of the first action members 120 is multiple, and the first action members 120 are arranged along the circumference of the inner wall of the embedding groove 111, and the adjacent first action members 120 are closely connected.

[0044] In the embodiment where the active member 10 drives one of the first body 110 and the second body 210 to move linearly, when in the action position, the first acting member 120 and the second acting member 220 are at least limited in the direction of the linear movement, and when 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 the linear movement.

[0045] If both the first body 110 and the second body 210 move in a straight line, the first body 110 and the second body 210 may be in the shape of a straight strip, and the first action member 120 and the second action member 220 may be multiple, and the multiple first action members 120 are distributed along the length direction of the first body 110 in a closely connected manner, and the multiple second action members 220 are distributed along the length direction of the second body 210 in a closely connected manner. Alternatively, the first body 110 can rotate under the drive of the active member 10, and the second body 210 is used for linear movement, then the first body 110 is in the shape of a disc, and the second body 210 is in the shape of a straight strip, and the first action member 120 and the second action member 220 are both multiple, and the multiple first action members 120 are distributed along the circumference of the first body 110 in a closely connected manner, and the multiple second action members 220 are distributed along the length direction of the second body 210 in a closely connected manner.

[0046] The first acting member 120 and the second acting member 220 interact with each other so that at least one of the first acting member 120 and the second acting member 220 moves to the yielding position in various ways, which can be achieved by the surface shape of the first acting member 120 and the second acting member 220 at the contact position. 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 action position to the yielding position. The external force applied to each other between the first acting surface and the second acting surface should satisfy the mutual push of the first acting member 120 and the second acting member 220 so that the first acting member 120 and the second acting member 220 are away from each other. For example, in one 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, and the inner V-shaped surface is adapted to the shape of the outer V-shaped surface, and when in the action position, the inner V-shaped surface abuts against the outer V-shaped surface. The V-surface may be disposed at the ends of the first acting member 120 and the second acting member 220, and one of the first acting member 120 and the second acting member 220 is forced to move to the yielding position through the guiding action of the inner V-shaped surface and the outer V-shaped surface.

[0047] Alternatively, in another embodiment, one of the first acting surface and the second acting surface is a concave arc surface, and the other is a convex arc surface. The shapes of the concave arc surface and the convex arc surface are adapted to each other. When in the acting position, the concave arc surface abuts against the convex arc surface. For example, a concave arc surface is provided at the end of the first acting member 120 facing away from the first main body 110, and a convex arc surface is provided at the end of the second acting member 220 facing away from 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 acting surface and the second acting surface are avoided, making it smoother for the first acting member 120 to cross over the second acting member 220 without excessive jamming at the sharp corners. In addition, when in the acting position, the surfaces of the first acting surface and the second acting surface abut against each other, making the positions between the first acting member 120 and the second acting member 220 more stable and making the transmission between the first main body 110 and the second main body 210 tighter.

[0048] In one embodiment, the overload protection device further includes a transmission connecting member 300. The transmission connecting member 300 is provided on the first main body 110 and is used to connect the driving member 10. For example, the transmission connecting member 300 can be an eccentric connecting member, and the eccentric connecting member is eccentrically installed with the output shaft of the driving member 10 to achieve axial limit between the output shaft of the first main body 110 and the driving member 10.

[0049] And / or, the transmission connecting member 300 is provided on the second main body 210, and the transmission connecting member 300 is used to connect the driven member 20. For example, the transmission connecting member 300 is a gear and can be engaged with the driven member by teeth.

[0050] On the other hand, the present invention also provides a cleaning device, including the overload protection device as described in any one of the above. The advantages of including the overload protection device as described in any one of the above are not elaborated here.

[0051] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An overload protection device, characterized in that, Comprising: A first transmission member (100), the first transmission member (100) includes a first main body (110) and at least one first acting member (120), and the first main body (110) is configured to move under the action of an external force; A second transmission member (200), the second transmission member (200) includes a second main 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) includes an acting position and a yielding position, and the first acting member (120) is configured to interact with the second acting member (220) so that at least one of the first acting member (120) and the second acting member (220) switches 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 in position so that the first main body (110) and the second main body (210) move synchronously; In the yielding position, the first acting member (120) and the second acting member (220) yield to each other so that the first main body (110) moves relative to the second main body (210).

3. The overload protection device according to claim 1, wherein The number of the second acting members (220) is multiple, and the multiple second acting members (220) are arranged in the moving direction of the second main body (210), and adjacent second acting members (220) are connected. After the first acting member (120) disengages from the current second acting member (220), at least one of the first acting member (120) and the second acting member (220) moves from the yielding position to the acting position, and the first acting member (120) acts on the second acting member (220) adjacent to the current second acting member (220); And / or, the number of the first acting members (120) is multiple, and the multiple first acting members (120) are arranged in the moving direction of the first main body (110), and adjacent first acting members (120) are connected. After the second acting member (220) disengages from the current first acting member (120), at least one of the first acting member (120) and the second acting member (220) moves from the yielding position to the acting position, and the first acting member (120) acts on the first acting member (120) adjacent to the current first acting member (120).

4. The overload protection device according to claim 1, wherein At least a part of the first main body (110) is deformable so that the first acting member (120) switches between the acting position and the yielding position; And / or, at least a part of the second main body (210) is deformable so that the second acting member (220) switches 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 when the first acting member (120) includes the acting position and the yielding position, the first main body (110) is elastic, or, 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 when the second acting member (220) includes the acting position and the yielding position, the second main body (210) is elastic, or, 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 for rotating around a rotating 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 rotating shaft. In the yielding position, the first acting member (120) and the second acting member (220) yield to each other at least in the circumferential direction around the rotating shaft.

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 rotating shaft; at least one of the first acting member (120) and the second acting member (220) is used for moving closer to or away from the rotating shaft in the plane perpendicular to the rotating shaft to switch between the acting position and the yielding 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), and 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); or, 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), and 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 stacked in the extending direction of the rotating shaft.

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

12. The overload protection device according to claim 7, characterized in that: The number of the first action members (120) is plural, and the plurality of the first action members (120) are symmetrically arranged relative to the rotation axis; And / or, the number of the second acting members (220) is plural, and the plurality of second acting members (220) are symmetrically arranged relative to the rotation axis.

13. The overload protection device according to claim 1, characterized in that: One of the first body (110) and the second body (210) is used for linear movement. When in the action position, the first action member (120) and the second action member (220) are at least limited in the direction of linear movement. When in the yielding position, the first action member (120) and the second action member (220) yield to each other at least in the direction of linear movement.

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

15. The overload protection device according to claim 14, characterized in that: One of the first action surface and the second action surface is an inner V-shaped surface, and the other is an outer V-shaped surface; Alternatively, one of the first action surface and the second action surface is a concave arc surface, and the other is a convex arc surface.

16. The overload protection device according to claim 14, characterized in that: The shapes of the first action surface and the second action surface are matched, and in the action position, the first action surface and the second action surface are in surface contact.

17. The overload protection device according to claim 1, characterized in that, The overload protection device also includes: A transmission connecting member (300), wherein the first main body (110) is provided with the transmission connecting member (300), and the transmission connecting member (300) is used to connect to an active member (10) of a cleaning device; And / or, the second main body (210) is provided with the transmission connecting member (300), and the transmission connecting member (300) is used to connect the passive member (20) of the cleaning device.

18. The overload protection device according to claim 17, characterized in that: The transmission connection member (300) is a gear.

19. A cleaning device, characterized in that, The invention comprises an overload protection device as claimed in any one of claims 1 to 18.

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