Rotation matching assembly and cleaning equipment

Abstract

The utility model discloses a running fit assembly and cleaning equipment, the running fit assembly comprises a first connecting piece, a connecting shaft, a middle connecting piece and a second connecting piece, the connecting shaft is in running fit with the first connecting piece, and the middle connecting piece is connected with the connecting shaft and is matched with the second connecting piece; when the connecting shaft and the first connecting piece are relatively static, the second connecting piece abuts against the middle connecting piece, and at least part of the middle connecting piece and / or the second connecting piece can deform, so that the second connecting piece and the connecting shaft rotate relatively.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a rotationally-fitted assembly and a cleaning device. Background Art

[0002] At present, cleaning equipment such as sweepers or mops usually include an equipment body and a cleaning component. The cleaning component can be detachably installed on the equipment body, and the cleaning component usually realizes its disassembly or assembly process through rotational motion. However, during the disassembly or assembly process, the problem of stalling is prone to occur, which in turn causes structural damage. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a rotational engagement assembly and a cleaning device. The rotational engagement assembly can cause a second connecting member and a connecting shaft to rotate relative to each other by deforming an intermediate connecting member, thereby preventing damage to the first connecting member or the connecting shaft, thereby protecting the first connecting member and the connecting shaft from stalling and extending the service life of the rotational engagement assembly.

[0004] According to the rotational cooperation assembly of the embodiment of the present application, it includes: a first connecting member; a connecting shaft, which is rotationally cooperated with the first connecting member; an intermediate connecting member and a second connecting member, which is connected to the connecting shaft and cooperates with the second connecting member. When the connecting shaft and the first connecting member are relatively stationary, the second connecting member and the intermediate connecting member are abutted against each other, and at least part of the intermediate connecting member and / or the second connecting member can be deformed so that the second connecting member and the connecting shaft can rotate relative to each other.

[0005] According to the rotational fitting assembly of the embodiment of the present application, an intermediate connector and / or a second connector that is at least partially deformable is provided, so that when the first connector and the connecting shaft are relatively stationary, i.e., when a stall occurs, the second connector and the connecting shaft can be rotated relative to each other through at least partial deformation of the intermediate connector and / or the second connector, thereby avoiding damage to the first connector or the connecting shaft, thereby achieving stall protection for the first connector and the connecting shaft, and helping to extend the service life of the rotational fitting assembly. In particular, when the rotational fitting assembly is applied to cleaning equipment, the cleaning assembly can be connected to the equipment body through the rotational fitting assembly, so that it can play a role in stall protection during the disassembly or assembly of the cleaning assembly.

[0006] According to the rotational fitting assembly of some embodiments of the present application, the intermediate connecting member is provided with an elastic deformation portion, and the second connecting member is provided with a limiting portion. At least a portion of the elastic deformation portion is suitable for deformation to release the fit with the limiting portion, so that the second connecting member and the connecting shaft rotate relative to each other.

[0007] According to the rotational fitting assembly of some embodiments of the present application, at least a portion of the elastic deformation portion is interference fit with the limiting portion.

[0008] According to the rotational fitting assembly of some embodiments of the present application, the intermediate connecting member includes a main body portion and the elastic deformation portion, the main body portion is fixedly sleeved on the connecting shaft, and the elastic deformation portion is sleeved on the main body portion.

[0009] According to the rotational fitting assembly of some embodiments of the present application, the elastic deformation portion is provided with an elastic protrusion, the limiting portion is constructed as a limiting groove, and the elastic protrusion is interference fit with the limiting groove.

[0010] According to the rotational fitting assembly of some embodiments of the present application, a deformation space is defined between the elastic protrusion and the main body.

[0011] According to the rotational fitting assembly of some embodiments of the present application, there are multiple elastic protrusions and multiple limiting grooves, and the multiple elastic protrusions correspond one-to-one to the multiple limiting grooves.

[0012] According to the rotational fitting assembly of some embodiments of the present application, a plurality of elastic protrusions are arranged at intervals around the connecting shaft on the radial outside of the connecting shaft.

[0013] According to the rotational fitting assembly of some embodiments of the present application, the elastic deformation portion includes an elastic buckle, and the limiting portion includes a limiting groove.

[0014] According to the rotational fitting assembly of some embodiments of the present application, the elastic deformation portion includes an elastic member, and the limiting portion includes a limiting groove.

[0015] According to the rotational fitting assembly of some embodiments of the present application, one of the connecting shaft and the first connecting member is provided with a thread groove, and the other is provided with a threaded portion, and the threaded portion is provided in the thread groove.

[0016] According to the rotational fitting 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.

[0017] According to the rotational fitting 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.

[0018] The present application also proposes a cleaning device.

[0019] According to an embodiment of the present application, the cleaning device includes: a device body, a cleaning component and the rotational matching component described in any one of the above embodiments, the device body is connected to the first connecting member, and the cleaning component is detachably connected to the second connecting member.

[0020] According to some embodiments of the cleaning device of the present application, the second connecting member is suitable for being transmission-connected to a driving assembly, and the driving assembly is suitable for driving the second connecting member to rotate so that the second connecting member drives the cleaning assembly to rise or fall.

[0021] According to some embodiments of the cleaning equipment of the present application, the second connecting member includes 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 suitable for transmission connection with the drive assembly.

[0022] According to some embodiments of the cleaning device of the present application, during the rotation of the driving component in the first direction, the connecting shaft and the intermediate connecting member can follow the first sleeve portion to rotate relative to the first connecting member and can extend into the second sleeve portion to separate the cleaning component from the second connecting member.

[0023] The advantages of the cleaning device and the above-mentioned rotational engagement assembly over the prior art are the same and will not be described in detail here.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 Schematic diagram of the rotational fit assembly of some embodiments of the present application Figure 1 ;

[0027] Figure 2 An exploded view of a rotationally engaged assembly according to some embodiments of the present application;

[0028] Figure 3 Schematic diagram of the rotational fit assembly of some embodiments of the present application Figure 2 ;

[0029] Figure 4 for Figure 3 Cross-sectional view at AA in FIG;

[0030] Figure 5 Schematic diagram of the rotational fit assembly of some embodiments of the present application Figure 3 ;

[0031] Figure 6Schematic diagram of the intermediate connector of the rotational fitting assembly of some embodiments of the present application Figure 1 ;

[0032] Figure 7 Schematic diagram of the intermediate connector of the rotational fitting assembly of some embodiments of the present application Figure 2 ;

[0033] Figure 8 Schematic diagram of the intermediate connector of the rotational fitting assembly of some embodiments of the present application Figure 3 ;

[0034] Figure 9 A schematic diagram of a cleaning device according to some embodiments of the present application;

[0035] Figure 10 Schematic diagram of the assembly of the rotational matching component and the cleaning component in some embodiments of the present application;

[0036] Figure 11 Schematic diagram of the assembly of the driving component and the rotational matching component in some embodiments of the present application.

[0037] Reference numerals:

[0038] Cleaning equipment 100;

[0039] Rotational matching assembly 10; driving assembly 20; device body 30; cleaning assembly 40;

[0040] First connecting member 1; connecting shaft 2; threaded portion 21;

[0041] Intermediate connecting member 3; elastic deformation portion 31; elastic protrusion 311; main body 32; deformation space 33;

[0042] The second connecting member 4 ; the limiting portion 41 ; the mounting cavity 42 ; the first sleeve portion 43 ; and the second sleeve portion 44 . DETAILED DESCRIPTION

[0043] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0044] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0045] The present application provides a rotational fit assembly 10 , which can be used in a cleaning device 100 , a pipe connection device, or between two other structures connected by rotational fit, without limitation herein.

[0046] For example, the cleaning device 100 may be a sweeping robot, a mopping robot, a window cleaning robot, a sweeping and mopping robot, or other robots with cleaning capabilities, etc., without limitation herein. For example, the cleaning device 100 includes a device body 30 and a cleaning assembly 40. The cleaning assembly 40 may be detachably connected to the device body 30 via a rotational mating assembly 10, and the disassembly and assembly processes of the cleaning assembly 40 are both achieved by rotating the rotational mating assembly 10.

[0047] The present application provides a rotationally engaged assembly 10 .

[0048] Please refer to Figure 1 and Figure 2 The rotational fitting assembly 10 includes: a first connecting member 1, a connecting shaft 2, an intermediate connecting member 3 and a second connecting member 4.

[0049] The first connecting member 1 is suitable for being connected to one of the device body 30 and the cleaning component 40, and the second connecting member 4 is suitable for being connected to the other of the device body 30 and the cleaning component 40. The connecting shaft 2 is rotatably matched with the first connecting member 1, and the intermediate connecting member 3 is connected to the connecting shaft 2 and matched with the second connecting member 4. When the connecting shaft 2 and the first connecting member 1 are relatively stationary, the second connecting member 4 is abutted against the intermediate connecting member 3, and 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 and the connecting shaft 2 rotate relative to each other.

[0050] For example, see Figure 3 The second connecting member 4 can be constructed as a sleeve, and the second connecting member 4 is sleeved on the first connecting member 1 to reduce the volume of the rotational fitting component 10 and realize the miniaturized design of the rotational fitting component 10.

[0051] For example, in the implementation method of applying the rotating fitting component 10 to the cleaning device 100, the first connecting member 1 can be connected to the device body 30, the second connecting member 4 can be connected to the cleaning component 40, and the connecting shaft 2 and the first connecting member 1 can be threadedly fitted, and the intermediate connecting member 3 and the second connecting member 4 can be fitted. For example, the intermediate connecting member 3 can be limitedly fitted with the second connecting member 4. In this way, during the disassembly or assembly of the cleaning component 40, the second connecting member 4 rotates under external drive to drive the intermediate connecting member 3 and the rotating shaft to rotate synchronously, so that the connecting shaft 2 rotates relative to the first connecting member 1, thereby realizing the disassembly or assembly of the cleaning component 40.

[0052] In some usage scenarios, a foreign object may be present at the connection between the connecting shaft 2 and the first connecting member 1, preventing the connecting shaft 2 and the first connecting member 1 from rotating relative to each other. This means that when the connecting shaft 2 and the first connecting member 1 become locked, the second connecting member 4, even when driven externally, will be unable to drive the intermediate connecting member 3 and the connecting shaft 2 to rotate synchronously, resulting in the connecting shaft 2 and the first connecting member 1 becoming relatively stationary. In this case, further increasing the load on the second connecting member 4 will cause at least partial deformation of the intermediate connecting member 3 and / or the second connecting member 4, causing the second connecting member 4 to rotate relative to the connecting shaft 2, thereby providing a stall protection mechanism.

[0053] Among them, at least partial deformation of the intermediate connecting member 3 and / or the second connecting member 4 includes but is not limited to at least partial deformation of the intermediate connecting member 3, at least partial deformation of the second connecting member 4, or deformation of at least part of the intermediate connecting member 3 and at least part of the second connecting member 4.

[0054] It is easy to understand that when the connecting shaft 2 and the first connecting member 1 cannot rotate relative to each other, that is, when a jam occurs, forced rotation will cause damage to the connecting shaft 2 or the first connecting member 1. However, at least partial deformation of the intermediate connecting member 3 and / or the second connecting member 4 of the present application 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, thereby achieving jam protection for the first connecting member 1 and the connecting shaft 2, and helping to extend the service life of the rotating mating component 10.

[0055] According to the rotational fitting component 10 of the embodiment of the present application, by providing an intermediate connector 3 and / or a second connector 4 that is at least partially deformable, when the first connector 1 and the connecting shaft 2 are relatively stationary, that is, when a stall occurs, the deformation of the intermediate connector 3 and / or the second connector 4 can cause the second connector 4 to rotate relative to the connecting shaft 2, thereby avoiding damage to the first connector 1 or the connecting shaft 2, thereby achieving stall protection for the first connector 1 and the connecting shaft 2, and helping to extend the service life of the rotational fitting component 10. In particular, when the rotational fitting component 10 is applied to the cleaning equipment 100, the cleaning component 40 can be connected to the equipment body 30 through the rotational fitting component 10, so that it can play a role in stall protection during the disassembly or assembly process of the cleaning component 40.

[0056] In some embodiments, at least part of the deformation of the intermediate connector 3 and / or the second connector 4 includes elastic deformation. In this way, at least part of the deformation of the intermediate connector 3 can automatically restore the deformation to facilitate recycling and reduce costs.

[0057] In some embodiments, the intermediate connector 3 is provided with an elastically deformable portion 31, and the second connector 4 is provided with a limiting portion 41. At least a portion of the elastically deformable portion 31 is adapted to deform to release engagement with the limiting portion 41, thereby enabling relative rotation of the second connector 4 and the connecting shaft 2. It will be appreciated that the elastically deformable portion 31 comprises a structure capable of elastic deformation, and the limiting portion 41 comprises a structure that is not elastically deformable.

[0058] For example, please refer to Figure 4 and Figure 5 The intermediate connecting member 3 is provided with an elastic deformation portion 31, and the second connecting member 4 is provided with a limiting portion 41. In this way, when the connecting shaft 2 is blocked, the second connecting member 4 rotates so that the limiting portion 41 squeezes the elastic deformation portion 31 to elastically deform the elastic deformation portion 31 and thereby release the engagement with 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 blocking protection for the first connecting member 1 and the connecting shaft 2.

[0059] In other embodiments, the intermediate connecting member 3 is provided with a limiting portion 41, and the second connecting member 4 is provided with an elastic deformation portion 31. In this way, when the connecting shaft 2 is blocked, the rotation of the second connecting member 4 will cause the elastic deformation portion 31 to be squeezed by the limiting portion 41 and elastically deformed, thereby separating from 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 blocking protection for the first connecting member 1 and the connecting shaft 2.

[0060] In some embodiments, at least a portion of the elastic deformation portion 31 is interference-fitted with the limiting portion 41. Thus, by providing an interference fit between at least a portion of the elastic deformation portion 31 and the limiting portion 41, when the connecting shaft 2 and the first connecting member 1 are not locked, the intermediate connecting member 3 can be positionally engaged with the second connecting member 4. Therefore, during the disassembly or assembly of the cleaning assembly 40, the second connecting member 4 rotates under external drive to drive the intermediate connecting member 3 and the rotating shaft to rotate synchronously, thereby causing the connecting shaft 2 to rotate relative to the first connecting member 1, thereby achieving disassembly or assembly of the cleaning assembly 40.

[0061] At the same time, since the elastic deformation part 31 has elastic deformation ability, on the one hand, the elastic deformation part 31 can achieve limiting cooperation with the limiting part 41 when the connecting shaft 2 and the first connecting member 1 are not blocked, and on the other hand, the elastic deformation part 31 can achieve elastic deformation to separate from the limiting part 41 when the connecting shaft 2 and the first connecting member 1 are blocked. In this way, the limiting cooperation and rotation cooperation of the intermediate connecting member 3 and the second connecting member 4 can be achieved through the elastic deformation part 31, so as to simplify the structural setting, and the interference fit setting method is relatively simple, which is conducive to reducing costs.

[0062] In some embodiments, please refer to Figure 6 The intermediate connecting member 3 includes a main body 32 and an elastic deformation portion 31. Please continue to refer to Figure 4 The main body 32 is fixedly sleeved on the connecting shaft 2 , and the elastic deformation portion 31 is sleeved on the main body 32 .

[0063] Therefore, by setting the main body 32 to be fixedly sleeved on the connecting shaft 2, the connection stability between the intermediate connecting piece 3 and the connecting shaft 2 is enhanced, and the space occupied in the axial direction of the connecting shaft 2 is reduced. The elastic deformation portion 31 is sleeved on the main body 32 to reduce the space occupied in the axial direction of the main body 32, thereby reducing the axial size of the intermediate connecting piece 3.

[0064] At the same time, the elastic deformation portion 31 is sleeved on the main body portion 32, and the main body portion 32 is fixedly sleeved on the connecting shaft 2, so that the elastic deformation portion 31 is sleeved on the connecting shaft 2, that is, the elastic deformation portion 31 surrounds the circumference of the connecting shaft 2. Since the second connecting member 4 rotates relative to the connecting shaft 2, the rotation direction of the second connecting member 4 is the circumference of the connecting shaft 2. Therefore, the elastic deformation portion 31 surrounds the circumference of the connecting shaft 2 to satisfy the relative rotation position relationship between the second connecting member 4 and the connecting shaft 2.

[0065] In some embodiments, the elastic deformation portion 31 is provided with an elastic protrusion 311, and the limiting portion 41 is configured as a limiting groove, with the elastic protrusion 311 having an interference fit with the limiting groove. Thus, during the disassembly or assembly of the cleaning assembly 40, the second connecting member 4 rotates under external drive. Due to the interference fit between the elastic protrusion 311 and the limiting groove, the second connecting member 4 can drive the intermediate connecting member 3 and the rotating shaft to rotate synchronously, thereby causing the connecting shaft 2 to rotate relative to the first connecting member 1, thereby achieving disassembly or assembly of the cleaning assembly 40.

[0066] Alternatively, when there is foreign matter at the connection between the connecting shaft 2 and the first connecting member 1, causing the connecting shaft 2 and the first connecting member 1 to be unable to rotate relative to each other, that is, when the connecting shaft 2 and the first connecting member 1 are relatively stationary, since the elastic protrusion 311 has a certain elastic deformation ability, at this time, continuing to increase the load on the second connecting member 4 will cause the elastic protrusion 311 to elastically deform and disengage from the limit groove, thereby causing the second connecting member 4 and the connecting shaft 2 to rotate relative to each other, thereby achieving the effect of stall protection.

[0067] In some embodiments, please refer to Figure 7 and Figure 8 A deformation space 33 is defined between the elastic protrusion 311 and the main body 32 .

[0068] Therefore, by setting a deformation space 33 between the elastic protrusion 311 and the main body 32, when the second connecting member 4 rotates and squeezes the elastic protrusion 311 to cause elastic deformation, the elastic protrusion 311 can be deformed in the direction of the deformation space 33, thereby increasing the deformation amount of the elastic protrusion 311 and reducing the difficulty of deformation of the elastic protrusion 311.

[0069] In some embodiments, the elastic deformation portion 31 is constructed as a rubber piece. In this way, the elastic deformation portion 31 has a certain elastic deformation ability, and the rubber piece is less difficult to manufacture, which helps to reduce costs.

[0070] In some embodiments, there are multiple elastic protrusions 311 and multiple limiting grooves, and the multiple elastic protrusions 311 correspond to the multiple limiting grooves one by one.

[0071] Therefore, by setting a plurality of one-to-one corresponding elastic protrusions 311 and limiting grooves, when the first connecting member 1 and the connecting shaft 2 are not blocked, the connection stability between the intermediate connecting member 3 and the second connecting member 4 is enhanced through the interference fit of multiple groups of elastic protrusions 311 and limiting grooves, thereby ensuring that the second connecting member 4 can drive the intermediate connecting member 3 and the connecting shaft 2 to rotate synchronously when it rotates.

[0072] In some embodiments, a plurality of elastic protrusions 311 are spaced apart and arranged around the connecting shaft 2 on the radially outer side of the connecting shaft 2. Thus, when the elastic protrusions 311 are elastically deformed, the connecting shaft 2 can be uniformly stressed in the circumferential direction, thereby preventing the connecting shaft 2 from being damaged due to uneven stress.

[0073] In some embodiments, the elastic deformation portion 31 includes an elastic buckle, and the limiting portion 41 includes a limiting groove. It is understood that the elastic buckle can be limitedly matched with the limiting groove or the elastic buckle can be elastically deformed to separate from the limiting groove.

[0074] Therefore, during the disassembly or assembly of the cleaning component 40, the second connecting member 4 rotates under external drive. Since the elastic clip can cooperate with the limiting groove, the second connecting member 4 can drive the intermediate connecting member 3 and the rotating shaft to rotate synchronously, thereby causing the connecting shaft 2 to rotate relative to the first connecting member 1, thereby realizing the disassembly or assembly of the cleaning component 40.

[0075] Alternatively, when there is foreign matter at the connection between the connecting shaft 2 and the first connecting member 1, which causes the connecting shaft 2 and the first connecting member 1 to be unable to rotate relative to each other, that is, when the connecting shaft 2 and the first connecting member 1 are relatively stationary, since the elastic clip has a certain elastic deformation ability, at this time, continuing to increase the load on the second connecting member 4 will cause the elastic clip to elastically deform and disengage from the limit groove, thereby causing the second connecting member 4 and the connecting shaft 2 to rotate relative to each other, thereby achieving the effect of stall protection.

[0076] In some embodiments, the elastic deformation portion 31 includes an elastic member, and the limiting portion 41 includes a limiting groove. For example, the elastic member can be a spring. It is understood that the elastic member can be limitedly engaged with the limiting groove or the elastic member can be elastically deformed to separate from the limiting groove.

[0077] Therefore, during the disassembly or assembly of the cleaning component 40, the second connecting member 4 rotates under external drive. Due to the limited cooperation between the elastic member and the limiting groove, the second connecting member 4 can drive the intermediate connecting member 3 and the rotating shaft to rotate synchronously, thereby causing the connecting shaft 2 to rotate relative to the first connecting member 1, thereby realizing the disassembly or assembly of the cleaning component 40.

[0078] Alternatively, when there is foreign matter at the connection between the connecting shaft 2 and the first connecting member 1, which causes the connecting shaft 2 and the first connecting member 1 to be unable to rotate relative to each other, that is, when the connecting shaft 2 and the first connecting member 1 are relatively stationary, since the elastic member has a certain elastic deformation ability, at this time, continuing to increase the load on the second connecting member 4 will cause the elastic member to undergo elastic deformation and disengage from the limit groove, thereby causing the second connecting member 4 and the connecting shaft 2 to rotate relative to each other, thereby achieving the effect of stall protection.

[0079] In some embodiments, one of the connecting shaft 2 and the first connecting member 1 is provided with a thread groove, and the other is provided with a threaded portion 21 , and the threaded portion 21 is provided in the thread groove.

[0080] For example, please refer to Figure 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 is threadedly matched with the first connecting member 1, so that when the connecting shaft 2 rotates relative to the first connecting member 1, it can rotate along the thread of the threaded portion 21 to achieve axial movement of the connecting shaft 2, and facilitate enhancing the stability of the rotational fit between the connecting shaft 2 and the first connecting member 1.

[0081] In some embodiments, please refer to Figure 4 The first connecting member 1 and the intermediate connecting member 3 are both 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. As a result, the axial dimension of the rotational fitting assembly 10 in the connecting shaft 2 is facilitated, thereby facilitating a miniaturized design of the rotational fitting assembly 10.

[0082] In some embodiments, the second connector 4 has a mounting cavity 42, and the intermediate connector 3 is inserted into the mounting cavity 42. Thus, by providing the mounting cavity 42, it is convenient to insert the intermediate connector 3 into the mounting cavity 42, so as to reduce the overall volume of the first connector 1 and the intermediate connector 3.

[0083] In the embodiment in which the second connector 4 is provided with a limiting groove and the intermediate connector 3 is provided with an elastic protrusion 311, the intermediate connector 3 is inserted into the mounting cavity 42, the elastic protrusion 311 is provided at one end of the intermediate connector 3 facing the mounting cavity 42, and the limiting groove is provided on the inner wall of the mounting cavity 42 and is open toward the mounting cavity 42. In this way, the provision of the elastic protrusion 311 and the limiting groove does not affect the size of the second connector 4, thereby facilitating its miniaturization.

[0084] Based on the same technical concept, the present application also proposes a cleaning device 100. The cleaning device 100 can be a sweeping robot, a mopping robot, a window cleaning robot, a sweeping and mopping robot or other robots with cleaning capabilities. The following is an example of the cleaning device 100 being a mopping robot.

[0085] like Figure 9 As shown, the cleaning device 100 includes: a device body 30, a cleaning assembly 40 and a rotational matching assembly 10 (such as Figure 1 The rotating fitting assembly 10 shown in FIG, the device body 30 is connected to the first connecting member 1, and the cleaning assembly 40 is detachably connected to the second connecting member 4.

[0086] For example, the connecting shaft 2 and the first connecting member 1 can be threadedly matched, and the intermediate connecting member 3 can be limitedly matched with the second connecting member 4. In this way, during the disassembly or assembly of the cleaning component 40, the second connecting member 4 rotates under external drive to drive the intermediate connecting member 3 and the rotating shaft to rotate synchronously, so that the connecting shaft 2 rotates relative to the first connecting member 1, thereby realizing the disassembly or assembly of the cleaning component 40.

[0087] In some usage scenarios, a foreign object may be present at the connection between the connecting shaft 2 and the first connecting member 1, preventing the connecting shaft 2 and the first connecting member 1 from rotating relative to each other. This means that when the connecting shaft 2 and the first connecting member 1 are locked, the second connecting member 4, even when driven externally, cannot drive the intermediate connection and the connecting shaft 2 to rotate synchronously, resulting in the connecting shaft 2 and the first connecting member 1 being relatively stationary. In this case, further increasing the load on the second connecting member 4 will cause at least partial deformation of the intermediate connecting member 3, thereby causing the second connecting member 4 and the connecting shaft 2 to rotate relative to each other.

[0088] It is easy to understand that when the connecting shaft 2 and the first connecting member 1 cannot rotate relative to each other, that is, when a jam occurs, forced rotation will cause damage to the connecting shaft 2 or the first connecting member 1. However, at least partial deformation of the intermediate connecting member 3 of the present application 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, thereby achieving jam protection for the first connecting member 1 and the connecting shaft 2, and helping to extend the service life of the rotating mating component 10.

[0089] According to the cleaning device 100 of the embodiment of the present application, its rotating fitting component 10 is provided with an intermediate connecting member 3 that is at least partially deformable, so that when the first connecting member 1 and the connecting shaft 2 are relatively stationary, that is, when a stall occurs, the second connecting member 4 and the connecting shaft 2 can be caused to rotate relative to each other through the deformation of the intermediate connecting member 3, thereby avoiding damage to the first connecting member 1 or the connecting shaft 2, thereby achieving stall protection for the first connecting member 1 and the connecting shaft 2, and helping to extend the service life of the rotating fitting component 10. In particular, when the rotating fitting component 10 is applied to the cleaning device 100, the cleaning component 40 can be connected to the device body 30 through the rotating fitting component 10, so that it can play a role in stall protection during the disassembly or assembly process of the cleaning component 40.

[0090] In some embodiments, please refer to Figure 10 The rotational engagement assembly 10 is connected between the drive assembly 20 and the cleaning assembly 40. Specifically, the second connecting member 4 is adapted to be in transmission connection with the drive assembly 20. The drive assembly 20 is adapted to drive the second connecting member 4 to rotate, so that the second connecting member 4 drives the cleaning assembly 40 to rise or fall. Thus, by providing the drive assembly 20, the rotational engagement assembly 10 is driven by the drive assembly 20 to achieve the lifting and lowering of the cleaning assembly 40.

[0091] For example, the driving component 20 may be a motor with a gear on its output shaft, and a rack is provided on the second connecting member 4. The gear and the rack are engaged, and the gear rotates to drive the rack to move linearly, so that the second connecting member 4 is lifted and lowered, thereby driving the cleaning component 40 to lift and lower.

[0092] Alternatively, the driving component 20 can be a motor, the second connecting member 4 is fixedly connected to the output shaft of the motor, the second connecting member 4 and the cleaning component 40 are threadedly connected, and the cleaning component 40 is slidingly connected to the equipment body 30 by means of slide rails and slide grooves. The motor drives the second connecting member 4 to rotate so that the cleaning component 40 can be raised and lowered along the length direction of the slide rail.

[0093] In some embodiments, please refer to Figure 11 The second connecting member 4 includes a first sleeve portion 43 and a second sleeve portion 44 connected to each other, please refer to Figure 4 The connecting shaft 2 and the intermediate connecting member 3 are both installed in the first sleeve portion 43, the second sleeve portion 44 is detachably connected to the cleaning assembly 40, and the first sleeve portion 43 or the second sleeve portion 44 is suitable for transmission connection with the driving assembly 20.

[0094] The driving assembly 20 can move the cleaning assembly 40 upward or downward by rotating the mating assembly 10. The first sleeve portion 43 and the second sleeve portion 44 are fixedly connected. When the driving assembly 20 drives the first sleeve portion 43 to move, the first sleeve portion 43 and the second sleeve portion 44 will move simultaneously, and the cleaning assembly 40 as a whole will move.

[0095] The cleaning assembly 40 is connected to the second sleeve portion 44. Under the action of the drive assembly 20, the cleaning assembly 40 will move with the second sleeve portion 44. With this design, under the action of the drive assembly 20, the drive assembly 20 drives the first sleeve portion 43 to move. Because the first sleeve portion 43 and the second sleeve portion 44 are fixedly connected, the cleaning assembly 40 can move with the first sleeve portion 43 and the second sleeve portion 44, allowing the cleaning assembly 40 to rise or fall, and the distance between the cleaning assembly 40 and the object to be cleaned can be adjusted to meet cleaning needs.

[0096] In some embodiments, when the drive assembly 20 rotates in the first direction, the connecting shaft 2 and the intermediate connector 3 can rotate relative to the first connector 1 along with the first sleeve portion 43 and can extend into the second sleeve portion 44, thereby separating the cleaning assembly 40 from the second connector 4. The first direction can be clockwise or counterclockwise, which is not limited here.

[0097] Therefore, during the process of the driving component 20 rotating in the first direction, the first connecting member 1 can be fixed, so that the connecting shaft 2 can rotate relative to the first connecting member 1, so that the connecting shaft 2 can extend into the second sleeve portion 44, that is, move relative to the first connecting member 1 in the direction close to the cleaning component 40, so as to push out the cleaning component 40, thereby realizing the disassembly of the cleaning component 40.

[0098] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0099] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0100] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0101] Obviously, those skilled in the art may make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if such changes and modifications fall within the scope of the claims of this specification and their equivalents, this specification is intended to include such changes and modifications.

Claims

1. A rotational fit assembly (10), characterized in that: include: A first connecting member (1); A connecting shaft (2), the connecting shaft (2) being rotationally engaged with the first connecting member (1); An intermediate connecting member (3) and a second connecting member (4), wherein the intermediate connecting member (3) is connected to the connecting shaft (2) and cooperates with the second connecting member (4); when the connecting shaft (2) and the first connecting member (1) are relatively stationary, the second connecting member (4) and the intermediate connecting member (3) abut against each other, and at least part of the intermediate connecting member (3) and / or the second connecting member (4) is deformable, so that the second connecting member (4) and the connecting shaft (2) rotate relative to each other.

2. The rotational engagement assembly (10) according to claim 1, characterized in that The intermediate connecting member (3) is provided with an elastic deformation portion (31), and the second connecting member (4) is provided with a limiting portion (41), and at least a portion of the elastic deformation portion (31) is adapted to deform to release the engagement with the limiting portion (41), so that the second connecting member (4) and the connecting shaft (2) can rotate relative to each other.

3. The rotational engagement assembly (10) according to claim 2, characterized in that: At least a portion of the elastic deformation portion (31) is interference-fitted with the limiting portion (41).

4. The rotational engagement assembly (10) according to claim 3, characterized in that: The intermediate connecting member (3) comprises a main body portion (32) and an elastic deformation portion (31); the main body portion (32) is fixedly sleeved on the connecting shaft (2); and the elastic deformation portion (31) is sleeved on the main body portion (32).

5. The rotational engagement assembly (10) according to claim 4, characterized in that: The elastic deformation portion (31) is provided with an elastic protrusion (311), the limiting portion (41) is constructed as a limiting groove, and the elastic protrusion (311) is interference-fitted with the limiting groove.

6. The rotational engagement assembly (10) according to claim 5, characterized in that A deformation space (33) is provided between the elastic protrusion (311) and the main body (32).

7. The rotational engagement assembly (10) according to claim 5, characterized in that: There are multiple elastic protrusions (311) and multiple limiting grooves, and the multiple elastic protrusions (311) correspond to the multiple limiting grooves one by one.

8. The rotational engagement assembly (10) according to claim 7, characterized in that: A plurality of elastic protrusions (311) are arranged at intervals around the connecting shaft (2) on the radial outer side of the connecting shaft (2).

9. The rotational engagement assembly (10) according to claim 2, characterized in that: The elastic deformation portion (31) includes an elastic buckle, and the limiting portion (41) includes a limiting groove.

10. The rotational engagement assembly (10) according to claim 2, characterized in that: The elastic deformation portion (31) includes an elastic member, and the limiting portion (41) includes a limiting groove.

11. The rotational engagement assembly (10) according to claim 1, characterized in that: One of the connecting shaft (2) and the first connecting member (1) is provided with a thread groove, and the other is provided with a threaded portion (21), wherein the threaded portion (21) is arranged in the thread groove.

12. The rotational engagement assembly (10) according to claim 1, characterized in that The first connecting member (1) and the intermediate connecting member (3) are both 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).

13. The rotational engagement assembly (10) according to any one of claims 1 to 12, characterized in that: The second connecting member (4) has a mounting cavity (42), and the intermediate connecting member (3) is inserted into the mounting cavity (42).

14. A cleaning device (100), characterized in that include: An equipment body (30), a cleaning assembly (40) and a rotational matching assembly (10) according to any one of claims 1 to 13, wherein the equipment body (30) is connected to the first connecting member (1), and the cleaning assembly (40) is detachably connected to the second connecting member (4).

15. The cleaning device (100) according to claim 14, characterized in that The second connecting member (4) is suitable for being in transmission connection with the driving assembly (20), and the driving assembly (20) is suitable for driving the second connecting member (4) to rotate, so that the second connecting member (4) drives the cleaning assembly (40) to rise or fall.

16. The cleaning device (100) according to claim 15, characterized in that The second connecting member (4) comprises a first sleeve portion (43) and a second sleeve portion (44) connected to each other, the connecting shaft (2) and the intermediate connecting member (3) are both installed in the first sleeve portion (43), the second sleeve portion (44) is detachably connected to the cleaning assembly (40), and the first sleeve portion (43) or the second sleeve portion (44) is suitable for transmission connection with the driving assembly (20).

17. The cleaning device (100) according to claim 16, characterized in that During the process of the driving assembly (20) rotating in the first direction, the connecting shaft (2) and the intermediate connecting member (3) can follow the first sleeve portion (43) to rotate relative to the first connecting member (1) and can extend into the second sleeve portion (44), so as to separate the cleaning assembly (40) from the second connecting member (4).

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