Rotational coupling assembly and cleaning device

Abstract

A rotational coupling assembly (10), comprising: a first connecting member (1), a connecting shaft (2), an intermediate connecting member (3) and a second connecting member (4), wherein the connecting shaft (2) is rotationally fitted to the first connecting member (1); the intermediate connecting member (3) is connected to the connecting shaft (2) and engaged with the second connecting member (4); and when the connecting shaft (2) is stationary relative to the first connecting member (1), at least part of the intermediate connecting member (3) and / or the second connecting member (4) can deform, so that the second connecting member (4) rotates relative to the connecting shaft (2).

Description

Rotational fitting assembly and cleaning device

[0001] Cross Reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 2024112454047, filed on September 5, 2024, entitled “Rotational fitting assembly and cleaning device”, and the Chinese patent application No. 2024221821229, filed on September 5, 2024, entitled “Rotational fitting assembly and cleaning device”, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of household appliances, and in particular to a rotational fitting assembly and a cleaning device. BACKGROUND

[0004] At present, a cleaning device such as a sweeping robot or a mopping robot usually comprises a device body and a cleaning assembly, the cleaning assembly is detachably mounted on the device body, and the cleaning assembly usually realizes its disassembly process or assembly process through a rotational movement. SUMMARY

[0005] The present application provides a rotational fitting assembly and a cleaning device.

[0006] In a first aspect of the present application, a rotational fitting assembly is provided, comprising: a first connecting member; a connecting shaft, which is rotationally fitted with the first connecting member; an intermediate connecting member and a second connecting member, the intermediate connecting member is connected with the connecting shaft and fitted with the second connecting member, at least part of the intermediate connecting member and / or the second connecting member is capable of deforming when the connecting shaft and the first connecting member are relatively static, so that the second connecting member is relatively rotated with the connecting shaft.

[0007] According to the rotational fitting assembly of some embodiments of the present application, the intermediate connecting member is provided with an elastically deformable portion, the second connecting member is provided with a limiting portion, at least part of the elastically deformable portion is adapted to deform to disengage from the limiting portion, so that the second connecting member is relatively rotated with the connecting shaft.

[0008] According to the rotational fitting assembly of some embodiments of the present application, at least part of the elastically deformable portion is interference fitted with the limiting portion.

[0009] According to the rotational fitting assembly of some embodiments of the present application, the intermediate connecting member comprises a body portion and the elastically deformable portion, the body portion is fixedly sleeved on the connecting shaft, and the elastically deformable portion is sleeved on the body portion.

[0010] According to the rotation matching assembly of some embodiments of the present application, the elastic deformation part is provided with an elastic protrusion, and the limiting part is configured as a limiting groove, and the elastic protrusion is in interference fit with the limiting groove.

[0011] According to the rotation matching assembly of some embodiments of the present application, a deformation space is arranged between the elastic protrusion and the body part.

[0012] According to the rotation matching assembly of some embodiments of the present application, the elastic protrusion and the limiting groove are both provided with a plurality of elastic protrusions and limiting grooves in one-to-one correspondence.

[0013] According to the rotation matching assembly of some embodiments of the present application, a plurality of elastic protrusions are arranged at intervals on the outer side of the connecting shaft in the radial direction of the connecting shaft.

[0014] According to the rotation matching assembly of some embodiments of the present application, the elastic deformation part comprises an elastic buckle, and the limiting part comprises a limiting groove.

[0015] According to the rotation matching assembly of some embodiments of the present application, the elastic deformation part comprises an elastic member, and the limiting part comprises a limiting groove.

[0016] According to the rotation matching assembly of some embodiments of the present application, one of the connecting shaft and the first connecting member is provided with a threaded groove, and the other is provided with a threaded part, and the threaded part is arranged in the threaded groove.

[0017] According to the rotation matching assembly of some embodiments of the present application, the first connecting member and the intermediate connecting member are both sleeved on the connecting shaft, and the second connecting member is sleeved on the first connecting member and the intermediate connecting member.

[0018] According to the rotation matching assembly of some embodiments of the present application, the second connecting member has a mounting cavity, and the intermediate connecting member is inserted into the mounting cavity.

[0019] In the second aspect of the present application, a cleaning device is provided, comprising: a device body, a cleaning assembly and the rotation matching assembly of any one of the above embodiments, the device body is connected with the first connecting member, and the cleaning assembly is detachably connected with the second connecting member.

[0020] According to the cleaning device of some embodiments of the present application, the second connecting member is adapted to be in transmission connection with a driving assembly, and the driving assembly is adapted to drive the second connecting member to rotate, so as to drive the cleaning assembly to ascend or descend.

[0021] According to some embodiments of the present application, the second connecting member comprises a first sleeve portion and a second sleeve portion connected to each other, the connecting shaft and the intermediate connecting member are both installed in the first sleeve portion, the second sleeve portion is detachably connected to the cleaning assembly, and the first sleeve portion or the second sleeve portion is adapted to be drivingly connected to the driving assembly.

[0022] According to some embodiments of the present application, during rotation of the driving assembly in the first direction, the connecting shaft and the intermediate connecting member are capable of following the rotation of the first sleeve portion relative to the first connecting member and capable of extending into the second sleeve portion, so as to separate the cleaning assembly from the second connecting member.

[0023] Additional aspects and advantages of the present application will be made apparent by the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings.

[0025] FIG. 1 is a schematic diagram of a rotating fitting assembly according to some embodiments of the present application.

[0026] FIG. 2 is an exploded view of a rotating fitting assembly according to some embodiments of the present application.

[0027] FIG. 3 is a schematic diagram of a rotating fitting assembly according to some embodiments of the present application.

[0028] FIG. 4 is a sectional view of the rotating fitting assembly of FIG. 3 at A-A.

[0029] FIG. 5 is a schematic diagram of a rotating fitting assembly according to some embodiments of the present application.

[0030] FIG. 6 is a schematic diagram of an intermediate connecting member of a rotating fitting assembly according to some embodiments of the present application.

[0031] FIG. 7 is a schematic diagram of an intermediate connecting member of a rotating fitting assembly according to some embodiments of the present application.

[0032] FIG. 8 is a schematic diagram of an intermediate connecting member of a rotating fitting assembly according to some embodiments of the present application.

[0033] FIG. 9 is a schematic diagram of a cleaning device according to some embodiments of the present application.

[0034] FIG. 10 is an assembly schematic diagram of a rotating fitting assembly and a cleaning assembly according to some embodiments of the present application.

[0035] Fig. 11 is an assembly view of the driving assembly and the rotating fitting assembly according to some embodiments of the present application.

[0036] Reference signs:

[0037] Cleaning device 100; rotating fitting assembly 10; driving assembly 20; device body 30; cleaning assembly 40; first connecting member 1; connecting shaft 2; threaded portion 21; intermediate connecting member 3; elastically deformable portion 31; elastically protruding portion 311; body portion 32; deformed space 33; second connecting member 4; limiting portion 41; mounting cavity 42; first sleeve portion 43; second sleeve portion 44. Embodiments of the present application

[0038] In order to better understand the technical solutions provided by the embodiments of the present application, the technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0039] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that includes the recited element. The term "two or more" includes two or more than two.

[0040] The present application provides a rotating fitting assembly 10, which can be used between a cleaning device 100, a pipeline connecting device, or other two structures connected by rotating fitting, without limitation.

[0041] For example, the cleaning device 100 can be a sweeping robot, a mopping robot, a window cleaning robot, a sweeping and mopping integrated robot, or other robots with cleaning capabilities, without limitation. For example, the cleaning device 100 includes a device body 30 and a cleaning assembly 40, the cleaning assembly 40 is detachably connected to the device body 30 through the rotating fitting assembly 10, and the disassembly and assembly processes of the cleaning assembly 40 are both realized by rotating the rotating fitting assembly 10.

[0042] The application provides a rotating fitting assembly 10.

[0043] Please refer to FIG. 1 and FIG. 2, the rotating fitting assembly 10 comprises a first connecting member 1, a connecting shaft 2, an intermediate connecting member 3 and a second connecting member 4.

[0044] The first connecting member 1 is adapted to be connected with one of the device body 30 and the cleaning assembly 40, and the second connecting member 4 is adapted to be connected with the other of the device body 30 and the cleaning assembly 40. The connecting shaft 2 is in rotating fitting with the first connecting member 1, and the intermediate connecting member 3 is connected with the connecting shaft 2 and fitted with the second connecting member 4. When the connecting shaft 2 is relatively static with the first connecting member 1, at least part of the intermediate connecting member 3 and / or the second connecting member 4 can be deformed, so that the second connecting member 4 is relatively rotated with the connecting shaft 2.

[0045] For example, please refer to FIG. 3, the second connecting member 4 can be configured as a sleeve, and the second connecting member 4 is sleeved on the first connecting member 1, so as to reduce the volume of the rotating fitting assembly 10 and realize the miniaturized design of the rotating fitting assembly 10.

[0046] For example, in the implementation mode that the rotating fitting assembly 10 is applied to the cleaning device 100, the first connecting member 1 can be connected with the device body 30, the second connecting member 4 can be connected with the cleaning assembly 40, and the connecting shaft 2 can be in threaded fitting with the first connecting member 1, and the intermediate connecting member 3 is fitted with the second connecting member 4. For example, the intermediate connecting member 3 can be in limiting fitting with the second connecting member 4. In this way, in the process of disassembling or assembling the cleaning assembly 40, the second connecting member 4 is rotated under external driving to drive the intermediate connecting member 3 and the rotating shaft to rotate synchronously, so that the connecting shaft 2 is rotated relative to the first connecting member 1, and the disassembly or assembly of the cleaning assembly 40 is realized.

[0047] In some use scenarios, when there is foreign matter at the connection between the connecting shaft 2 and the first connecting member 1, the connecting shaft 2 and the first connecting member 1 cannot be relatively rotated, that is, the connecting shaft 2 and the first connecting member 1 are locked, and even if the second connecting member 4 is driven externally, the intermediate connecting member 3 and the connecting shaft 2 cannot be driven to rotate synchronously, that is, the connecting shaft 2 and the first connecting member 1 are relatively static. At this time, if the load on the second connecting member 4 continues to increase, at least part of the intermediate connecting member 3 and / or the second connecting member 4 will be deformed, so that the second connecting member 4 is relatively rotated with the connecting shaft 2, thereby playing a role of lock protection.

[0048] In some embodiments, the deformation of at least part of the intermediate connecting member 3 and / or the second connecting member 4 includes but is not limited to the deformation of at least part of the intermediate connecting member 3, the deformation of at least part of the second connecting member 4, or the deformation of at least part of the intermediate connecting member 3 and at least part of the second connecting member 4.

[0049] It is easy to understand that, when the connecting shaft 2 and the first connecting member 1 cannot rotate relative to each other, i.e., the connecting shaft 2 and the first connecting member 1 are locked, forcibly rotating the connecting shaft 2 and the first connecting member 1 can cause damage to the connecting shaft 2 or the first connecting member 1, and at least partial deformation of the intermediate connecting member 3 and / or the second connecting member 4 can enable the second connecting member 4 to rotate relative to the connecting shaft 2 to release the load, thereby avoiding damage to the connecting shaft 2 or the first connecting member 1 due to excessive load, and further achieving lock protection for the first connecting member 1 and the connecting shaft 2, and facilitating prolonging the service life of the rotating fitting assembly 10.

[0050] The rotating fitting assembly 10 according to the embodiments of the present application can achieve lock protection for the first connecting member 1 and the connecting shaft 2 by deforming the intermediate connecting member 3 and / or the second connecting member 4 at least partially, so that the second connecting member 4 can rotate relative to the connecting shaft 2 when the first connecting member 1 and the connecting shaft 2 are locked, thereby avoiding damage to the first connecting member 1 or the connecting shaft 2, and further achieving lock protection for the first connecting member 1 and the connecting shaft 2, and facilitating prolonging the service life of the rotating fitting assembly 10. In some embodiments, the rotating fitting assembly 10 is applied to the cleaning device 100, and the cleaning assembly 40 can be connected to the device body 30 through the rotating fitting assembly 10. In this way, the rotating fitting assembly 10 can play a role in lock protection during disassembly or assembly of the cleaning assembly 40.

[0051] In some embodiments, the at least partial deformation of the intermediate connecting member 3 and / or the second connecting member 4 includes elastic deformation. In this way, the intermediate connecting member 3 can automatically recover from the at least partial deformation, facilitating recycling and reducing costs.

[0052] In some embodiments, the intermediate connecting member 3 is provided with an elastically deformable portion 31, and the second connecting member 4 is provided with a limiting portion 41, and at least part of the elastically deformable portion 31 is adapted to deform to disengage the limiting portion 41, so that the second connecting member 4 can rotate relative to the connecting shaft 2. It is understood that the elastically deformable portion 31 includes a structure having elastic deformation capability, and the limiting portion 41 includes a structure that cannot be elastically deformed.

[0053] For example, referring to FIGS. 4 and 5, the intermediate connecting member 3 is provided with an elastically deformable portion 31, and the second connecting member 4 is provided with a limiting portion 41. In this way, when the connecting shaft 2 is locked, the second connecting member 4 rotates to cause the limiting portion 41 to press the elastically deformable portion 31 to elastically deform the elastically deformable portion 31 to disengage the limiting portion 41, so that the second connecting member 4 can rotate relative to the intermediate connecting member 3 and the connecting shaft 2, thereby avoiding damage to the first connecting member 1 or the connecting shaft 2, and further achieving lock protection for the first connecting member 1 and the connecting shaft 2.

[0054] In some embodiments, the intermediate connecting piece 3 is provided with a limiting portion 41, and the second connecting piece 4 is provided with an elastically deformable portion 31. In this way, when the connecting shaft 2 is stalled, the rotation of the second connecting piece 4 will cause the elastically deformable portion 31 to be elastically deformed by the extrusion of the limiting portion 41 so as to be separated from the limiting portion 41, so that the second connecting piece 4 can rotate relative to the intermediate connecting piece 3 and the connecting shaft 2, thereby avoiding damage to the first connecting piece 1 or the connecting shaft 2, and further achieving the stall protection of the first connecting piece 1 and the connecting shaft 2.

[0055] In some embodiments, at least part of the elastically deformable portion 31 is in interference fit with the limiting portion 41. In this way, by setting at least part of the elastically deformable portion 31 in interference fit with the limiting portion 41, when the connecting shaft 2 is not stalled with the first connecting piece 1, the intermediate connecting piece 3 can be in limiting fit with the second connecting piece 4, so that during the disassembly or assembly of the cleaning assembly 40, the second connecting piece 4 is rotated under external driving to drive the intermediate connecting piece 3 and the rotating shaft to rotate synchronously, so that the connecting shaft 2 rotates relative to the first connecting piece 1, thereby achieving the disassembly or assembly of the cleaning assembly 40.

[0056] Meanwhile, since the elastically deformable portion 31 has the elastic deformation capability, on the one hand, the elastically deformable portion 31 can be in limiting fit with the limiting portion 41 when the connecting shaft 2 is not stalled with the first connecting piece 1. On the other hand, the elastically deformable portion 31 can be elastically deformed to be separated from the limiting portion 41 when the connecting shaft 2 is stalled with the first connecting piece 1. In this way, the limiting fit and the rotating fit of the intermediate connecting piece 3 and the second connecting piece 4 can be achieved by the elastically deformable portion 31, so as to simplify the structure setting, and the interference fit setting mode is relatively simple, which is beneficial to reduce the cost.

[0057] In some embodiments, please refer to FIG. 6, the intermediate connecting piece 3 comprises a body portion 32 and an elastically deformable portion 31. Please continue to refer to FIG. 4, the body portion 32 is fixedly sleeved on the connecting shaft 2, and the elastically deformable portion 31 is sleeved on the body portion 32.

[0058] In this way, by setting the body portion 32 to be fixedly sleeved on the connecting shaft 2, the connection stability of the intermediate connecting piece 3 and the connecting shaft 2 is enhanced, and the space occupation in the axial direction of the connecting shaft 2 is reduced. The elastically deformable portion 31 is sleeved on the body portion 32, so as to reduce the space occupation in the axial direction of the body portion 32, and further reduce the axial dimension of the intermediate connecting piece 3.

[0059] Meanwhile, the elastic deformation part 31 is sleeved on the body part 32, and the body part 32 is fixedly sleeved on the connecting shaft 2, so that the elastic deformation part 31 is sleeved on the connecting shaft 2, that is, the elastic deformation part 31 circumferentially surrounds the connecting shaft 2. Since the rotating direction of the second connecting piece 4 is the circumferential direction of the connecting shaft 2 when the second connecting piece 4 rotates relative to the connecting shaft 2, the elastic deformation part 31 circumferentially surrounds the connecting shaft 2 to meet the positional relationship between the second connecting piece 4 and the connecting shaft 2 when they rotate relative to each other.

[0060] In some embodiments, the elastic deformation part 31 is provided with elastic protrusions 311, and the limiting part 41 is configured as limiting grooves, and the elastic protrusions 311 are in interference fit with the limiting grooves. Thus, when the cleaning assembly 40 is disassembled or assembled, the second connecting piece 4 is driven to rotate, and since the elastic protrusions 311 are in interference fit with the limiting grooves, the second connecting piece 4 can drive the intermediate connecting piece 3 and the rotating shaft to rotate synchronously, so that the connecting shaft 2 rotates relative to the first connecting piece 1, thereby realizing the disassembly or assembly of the cleaning assembly 40.

[0061] In some embodiments, when there is foreign matter at the connection between the connecting shaft 2 and the first connecting piece 1, so that the connecting shaft 2 and the first connecting piece 1 cannot rotate relative to each other, that is, the connecting shaft 2 and the first connecting piece 1 are relatively stationary, since the elastic protrusions 311 have a certain elastic deformation capacity, when the load on the second connecting piece 4 continues to increase, the elastic protrusions 311 will elastically deform and disengage from the limiting grooves, so that the second connecting piece 4 rotates relative to the connecting shaft 2, thereby realizing the function of stall protection.

[0062] In some embodiments, referring to FIGS. 7 and 8, a deformation space 33 is formed between the elastic protrusions 311 and the body part 32.

[0063] Thus, by providing the deformation space 33 between the elastic protrusions 311 and the body part 32, when the elastic protrusions 311 are elastically deformed by being extruded by the rotation of the second connecting piece 4, the elastic protrusions 311 can deform towards the direction of the deformation space 33, thereby increasing the deformation amount of the elastic protrusions 311 and reducing the difficulty of deforming the elastic protrusions 311.

[0064] In some embodiments, the elastic deformation part 31 is configured as a rubber piece. In this way, the elastic deformation part 31 has a certain elastic deformation capacity, and the rubber piece is relatively easy to manufacture, which is conducive to reducing costs.

[0065] In some embodiments, the elastic protrusions 311 and the limiting grooves are both provided with a plurality of elastic protrusions 311 and limiting grooves, and the plurality of elastic protrusions 311 correspond one-to-one to the plurality of limiting grooves.

[0066] Thus, by arranging a plurality of one-to-one corresponding elastic protrusions 311 and limiting grooves, when the first connecting piece 1 and the connecting shaft 2 are not blocked, the connection stability of the intermediate connecting piece 3 and the second connecting piece 4 is enhanced by the interference fit of the plurality of elastic protrusions 311 and the limiting grooves, thereby ensuring that the intermediate connecting piece 3 and the connecting shaft 2 can be driven to rotate synchronously when the second connecting piece 4 rotates.

[0067] In some embodiments, a plurality of elastic protrusions 311 are arranged at intervals on the radial outside of the connecting shaft 2. Thus, when the elastic protrusions 311 are elastically deformed, the stress on the circumference of the connecting shaft 2 can be ensured to be uniform, thereby avoiding damage to the connecting shaft 2 due to uneven stress.

[0068] In some embodiments, the elastic deformation part 31 includes an elastic buckle, and the limiting part 41 includes a limiting groove. It can be understood that the elastic buckle can be limitedly fitted with the limiting groove or the elastic buckle can be elastically deformed to separate from the limiting groove.

[0069] Thus, during the disassembly or assembly of the cleaning assembly 40, the second connecting piece 4 is driven to rotate externally, and since the elastic buckle can be limitedly fitted with the limiting groove, the second connecting piece 4 can drive the intermediate connecting piece 3 and the rotating shaft to rotate synchronously, thereby causing the connecting shaft 2 to rotate relative to the first connecting piece 1, and further achieving the disassembly or assembly of the cleaning assembly 40.

[0070] In other embodiments, when there is foreign matter at the connection between the connecting shaft 2 and the first connecting piece 1, causing the connecting shaft 2 and the first connecting piece 1 to be unable to rotate relative to each other, i.e., the connecting shaft 2 and the first connecting piece 1 are relatively stationary, since the elastic buckle has a certain elastic deformation capacity, when the load on the second connecting piece 4 is continuously increased, the elastic buckle will elastically deform and separate from the limiting groove, thereby causing the second connecting piece 4 to rotate relative to the connecting shaft 2, and further achieving the effect of block protection.

[0071] In some embodiments, the elastic deformation part 31 includes an elastic member, and the limiting part 41 includes a limiting groove. For example, the elastic member can be a spring. It can be understood that the elastic member can be limitedly fitted with the limiting groove or the elastic member can be elastically deformed to separate from the limiting groove.

[0072] Thus, during the disassembly or assembly of the cleaning assembly 40, the second connecting piece 4 is driven to rotate externally, and since the elastic member is limitedly fitted with the limiting groove, the second connecting piece 4 can drive the intermediate connecting piece 3 and the rotating shaft to rotate synchronously, thereby causing the connecting shaft 2 to rotate relative to the first connecting piece 1, and further achieving the disassembly or assembly of the cleaning assembly 40.

[0073] In some embodiments, the connecting shaft 2 and the first connecting member 1 are threadedly connected. For example, referring to FIG. 2, the connecting shaft 2 is provided with a threaded portion 21, and the first connecting member 1 is provided with a threaded groove (not shown in the figure). In this way, the connecting shaft 2 and the first connecting member 1 are threadedly connected, so that when the connecting shaft 2 rotates relative to the first connecting member 1, the connecting shaft 2 can rotate along the threads of the threaded portion 21 to realize the axial movement of the connecting shaft 2, and the stability of the rotational connection between the connecting shaft 2 and the first connecting member 1 is enhanced.

[0074] In some embodiments, one of the connecting shaft 2 and the first connecting member 1 is provided with a threaded groove, and the other is provided with a threaded portion 21 arranged in the threaded groove.

[0075] For example, referring to FIG. 2, the connecting shaft 2 is provided with a threaded portion 21, and the first connecting member 1 is provided with a threaded groove (not shown in the figure). In this way, the connecting shaft 2 and the first connecting member 1 are threadedly connected, so that when the connecting shaft 2 rotates relative to the first connecting member 1, the connecting shaft 2 can rotate along the threads of the threaded portion 21 to realize the axial movement of the connecting shaft 2, and the stability of the rotational connection between the connecting shaft 2 and the first connecting member 1 is enhanced.

[0076] In some embodiments, referring to FIG. 4, the first connecting member 1 and the intermediate connecting member 3 are sleeved on the connecting shaft 2, and the second connecting member 4 is sleeved on the first connecting member 1 and the intermediate connecting member 3. In this way, the size of the rotational connection assembly 10 in the axial direction of the connecting shaft 2 is facilitated, and the miniaturization design of the rotational connection assembly 10 is facilitated.

[0077] In some embodiments, the second connecting member 4 has a mounting cavity 42, and the intermediate connecting member 3 is inserted into the mounting cavity 42. In this way, by providing the mounting cavity 42, the intermediate connecting member 3 is inserted into the mounting cavity 42, which facilitates the reduction of the overall size of the first connecting member 1 and the intermediate connecting member 3.

[0078] In the implementation mode in which the second connecting member 4 is provided with a limiting groove and the intermediate connecting member 3 is provided with an elastic protrusion 311, the intermediate connecting member 3 is inserted into the mounting cavity 42, the elastic protrusion 311 is arranged at one end of the side of the intermediate connecting member 3 facing the mounting cavity 42, and the limiting groove is arranged on the inner wall of the mounting cavity 42 and opens towards the mounting cavity 42. In this way, the arrangement of the elastic protrusion 311 and the limiting groove does not affect the size of the second connecting member 4, and the miniaturization design is facilitated.

[0079] Based on the same technical concept, the present application also proposes a cleaning device 100, which can be a sweeping robot, a mopping robot, a window cleaning robot, a sweeping and mopping integrated robot, or other robots with cleaning capabilities. In the following, the cleaning device 100 is taken as an example of a mopping robot.

[0080] As shown in FIG. 9, the cleaning device 100 comprises a device body 30, a cleaning assembly 40, and the rotation fitting assembly 10 (as shown in FIG. 1) of any one of the above embodiments, the device body 30 is connected with the first connecting member 1, and the cleaning assembly 40 is detachably connected with the second connecting member 4.

[0081] For example, the connecting shaft 2 is threadedly connected with the first connecting member 1, and the intermediate connecting member 3 is limitingly connected with the second connecting member 4. In this way, during the disassembly or assembly of the cleaning assembly 40, the second connecting member 4 is driven to rotate to drive the intermediate connecting member 3 and the connecting shaft 2 to rotate synchronously, so that the connecting shaft 2 rotates relative to the first connecting member 1, thereby achieving the disassembly or assembly of the cleaning assembly 40.

[0082] In some use scenarios, when the connecting shaft 2 and the first connecting member 1 are blocked from rotating relative to each other due to the presence of foreign matter at the connection between the connecting shaft 2 and the first connecting member 1, the second connecting member 4 cannot drive the intermediate connecting member 3 and the connecting shaft 2 to rotate synchronously even under external driving, i.e., the connecting shaft 2 and the first connecting member 1 are relatively stationary. At this time, if the load on the second connecting member 4 continues to increase, at least part of the intermediate connecting member 3 will deform, so that the second connecting member 4 rotates relative to the connecting shaft 2.

[0083] It is easy to understand that when the connecting shaft 2 and the first connecting member 1 are blocked from rotating relative to each other, forcibly rotating them will cause damage to the connecting shaft 2 or the first connecting member 1. However, the at least partial deformation of the intermediate connecting member 3 according to the present application allows the second connecting member 4 to rotate relative to the connecting shaft 2 to release the load, thereby avoiding damage to the connecting shaft 2 or the first connecting member 1 due to excessive load, and further achieving blocking protection for the first connecting member 1 and the connecting shaft 2, and facilitating the extension of the service life of the rotation fitting assembly 10.

[0084] The cleaning device 100 according to the embodiments of the present application has the rotation fitting assembly 10, which is provided with the intermediate connecting member 3 that can at least partially deform. When the first connecting member 1 and the connecting shaft 2 are relatively stationary, i.e., are blocked from rotating relative to each other, the deformation of the intermediate connecting member 3 allows the second connecting member 4 to rotate relative to the connecting shaft 2, thereby avoiding damage to the first connecting member 1 or the connecting shaft 2, further achieving blocking protection for the first connecting member 1 and the connecting shaft 2, and facilitating the extension of the service life of the rotation fitting assembly 10. In some embodiments, when the rotation fitting assembly 10 is applied to the cleaning device 100, the cleaning assembly 40 can be connected with the device body 30 through the rotation fitting assembly 10. In this way, the rotation fitting assembly 10 can play a role in blocking protection during the disassembly or assembly of the cleaning assembly 40.

[0085] In some embodiments, referring to FIG. 10, the rotation fitting assembly 10 is connected between the driving assembly 20 and the cleaning assembly 40. In some embodiments, the second connecting member 4 is adapted to be in driving connection with the driving assembly 20, and the driving assembly 20 is adapted to drive the second connecting member 4 to rotate so as to drive the cleaning assembly 40 to ascend or descend. Thus, the driving assembly 20 is arranged to drive the rotation fitting assembly 10 to realize the ascending or descending of the cleaning assembly 40.

[0086] For example, the driving assembly 20 can be an electric motor, the output shaft of the electric motor is provided with a gear, the second connecting member 4 is provided with a rack, the gear is in mesh with the rack, the rotation of the gear drives the rack to move linearly, so as to drive the second connecting member 4 to ascend or descend, and further drive the cleaning assembly 40 to ascend or descend.

[0087] In other embodiments, the driving assembly 20 can be an electric motor, the second connecting member 4 is fixedly connected with the output shaft of the electric motor, the second connecting member 4 and the cleaning assembly 40 are threadedly connected, the cleaning assembly 40 is slidably connected with the device body 30 through the way of slide rail and slide groove, and the electric motor drives the second connecting member 4 to rotate, so as to drive the cleaning assembly 40 to ascend or descend along the length direction of the slide rail.

[0088] In some embodiments, referring to FIG. 11, the second connecting member 4 comprises a first sleeve part 43 and a second sleeve part 44 which are connected with each other. Referring to FIG. 4, the connecting shaft 2 and the intermediate connecting member 3 are both installed in the first sleeve part 43, the second sleeve part 44 is detachably connected with the cleaning assembly 40, and the first sleeve part 43 or the second sleeve part 44 is adapted to be in driving connection with the driving assembly 20.

[0089] In some embodiments, the driving assembly 20 can drive the cleaning assembly 40 to ascend or descend through the rotation fitting assembly 10. The first sleeve part 43 and the second sleeve part 44 are fixedly connected, the driving assembly 20 drives the first sleeve part 43 to move, and the first sleeve part 43 and the second sleeve part 44 will move simultaneously, and the cleaning assembly 40 will move as a whole.

[0090] The cleaning assembly 40 is connected with the second sleeve part 44, and under the action of the driving assembly 20, the cleaning assembly 40 will move together with the second sleeve part 44. After being designed in this way, the driving assembly 20 drives the first sleeve part 43 to move under the action of the driving assembly 20. Since the first sleeve part 43 and the second sleeve part 44 are fixedly connected, the cleaning assembly 40 can move together with the first sleeve part 43 and the second sleeve part 44, so that the cleaning assembly 40 can ascend or descend, and the distance between the cleaning assembly 40 and the object to be cleaned can be adjusted to meet the cleaning needs.

[0091] In some embodiments, during the rotation of the driving assembly 20 in the first direction, the connecting shaft 2 and the intermediate connecting piece 3 can rotate relative to the first connecting piece 1 following the first sleeve part 43 and can extend into the second sleeve part 44, so as to separate the cleaning assembly 40 from the second connecting piece 4. In some embodiments, the first direction can be the clockwise direction or the counterclockwise direction, which is not limited herein.

[0092] Thus, during the rotation of the driving assembly 20 in the first direction, the first connecting piece 1 can be fixed at this time, so that the connecting shaft 2 can rotate relative to the first connecting piece 1, so that the connecting shaft 2 can extend into the second sleeve part 44, i.e., move relative to the first connecting piece 1 in the direction close to the cleaning assembly 40, so as to push out the cleaning assembly 40, thereby achieving the disassembly of the cleaning assembly 40.

[0093] The cleaning device has the same advantages as the rotation cooperation assembly described above relative to the prior art, which is not described herein again.

[0094] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0095] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0096] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0097] Obviously, those skilled in the art can make various modifications and changes to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and changes.

Claims

1. A rotationally cooperating assembly, comprising: a first connecting member; a connecting shaft rotationally cooperating with the first connecting member; an intermediate connecting member connected with the connecting shaft and cooperating with a second connecting member, at least a part of the intermediate connecting member and / or the second connecting member being deformable to allow the second connecting member to rotate relative to the connecting shaft when the connecting shaft and the first connecting member are relatively stationary.

2. The rotational fit assembly of claim 1, wherein, The intermediate connecting member is provided with an elastically deformable portion, and the second connecting member is provided with a limiting portion, at least a part of the elastically deformable portion being adapted to deform to disengage from the limiting portion to allow the second connecting member to rotate relative to the connecting shaft.

3. The rotational fit assembly of claim 2, wherein, At least a part of the elastically deformable portion is in interference fit with the limiting portion.

4. The turn-to-fit assembly of claim 3, wherein, The intermediate connecting member comprises a body portion fixedly sleeved on the connecting shaft and the elastically deformable portion sleeved on the body portion.

5. The rotational fit assembly of claim 4, wherein, The elastically deformable portion is provided with an elastically protruding portion, and the limiting portion is configured as a limiting groove, the elastically protruding portion being in interference fit with the limiting groove.

6. The rotational fit assembly of claim 5, wherein, A deformation space is formed between the elastically protruding portion and the body portion.

7. The snap-fit assembly of claim 5, wherein, The elastically protruding portion and the limiting groove are both provided with a plurality of portions, the plurality of elastically protruding portions corresponding to the plurality of limiting grooves one by one.

8. The rotational fit assembly of claim 7, wherein, The plurality of elastically protruding portions are arranged at intervals around the connecting shaft on the radial outside of the connecting shaft.

9. The snap-fit assembly of claim 2, wherein, The elastically deformable portion comprises an elastically clamping portion, and the limiting portion comprises a limiting groove.

10. The snap-fit assembly of claim 2, wherein, The elastically deformable portion comprises an elastic member, and the limiting portion comprises a limiting groove.

11. The snap-fit assembly of claim 1, wherein, One of the connecting shaft and the first connecting member is provided with a threaded groove, and the other is provided with a threaded portion arranged in the threaded groove.

12. The snap-fit assembly of claim 1, wherein, The first connecting member and the intermediate connecting member are both sleeved on the connecting shaft, and the second connecting member is sleeved on the first connecting member and the intermediate connecting member.

13. The turn-to-fit assembly of any of claims 1-12, wherein, The second connecting member has a mounting cavity, and the intermediate connecting member is inserted into the mounting cavity.

14. A cleaning apparatus comprising: A device body connected with the first connecting member of the rotationally cooperating assembly, a cleaning assembly detachably connected with the second connecting member of the rotationally cooperating assembly, and the rotationally cooperating assembly of any one of claims 1-13.

15. The cleaning apparatus of claim 14, wherein, The second connecting member is adapted to be in transmission connection with a driving assembly, the driving assembly being adapted to drive the second connecting member to rotate to cause the second connecting member to drive the cleaning assembly to ascend or descend.

16. The cleaning apparatus of claim 15, wherein, The second connecting member comprises a first sleeve portion and a second sleeve portion connected with each other, the connecting shaft and the intermediate connecting member being both arranged in the first sleeve portion, the second sleeve portion being detachably connected with the cleaning assembly, and the first sleeve portion or the second sleeve portion being adapted to be in transmission connection with the driving assembly.

17. The cleaning apparatus of claim 16, wherein, During rotation of the driving assembly in a first direction, the connecting shaft and the intermediate connecting member are capable of rotating relative to the first connecting member along with the first sleeve portion and are capable of extending into the second sleeve portion to cause the cleaning assembly to be separated from the second connecting member.

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