A buffer assembly of a clutch device and a clutch device

Abstract

The application discloses a buffer assembly of a clutch device and the clutch device. The buffer assembly comprises a shell, an internal cavity is formed in the shell; a pull tube, one end of the pull tube is slidably arranged in the cavity of the shell through a front end wall of the shell; and an elastic member, the elastic member is arranged in the cavity of the shell and clamped between the end of the pull tube and the front end wall of the shell. In the application, the elastic member is clamped between the pull tube and the front end wall of the shell. When the pulling force applied to one end of the pull tube is less than the elastic force of the elastic member, the pull tube is compressed in the shell under the action of the elastic force of the elastic member. When the pulling force exceeds the elastic force, the pull tube can be pulled out of the shell, so that the buffer assembly is elongated by a certain length. Therefore, the distance that the clutch device can be pulled is increased by using the structure of the buffer assembly, the clutch device is prevented from being damaged due to the control deviation of the pulling distance, and the elongation of the buffer assembly can accurately ensure that the clutch device stably performs the clutching action.

Description

Technical Field

[0001] This invention belongs to the field of clothing processing equipment, and more specifically, relates to a buffer assembly and a clutch device. Background Technology

[0002] In this invention, "clothing processing equipment" refers to a general term for a class of household appliances that can perform washing, dehydration, drying and other processes, such as washing machines and washer-dryer combos.

[0003] In existing technology, the clutch mechanism of a washing machine is generally installed at the bottom of the machine. It is used to cut off or connect the power to the washing drum, or to change the consistency of the rotation direction of the impeller and drum. Typically, the clutch mechanism uses gear meshing to engage with different gears, thereby driving different gears to switch washing modes. In the clutch mechanism, the shift fork is rotated around a fixed point and is movably connected to the clutch gear ring. A drive device drives the shift fork to rotate around the fixed point, which in turn drives the clutch gear ring to move up and down, thus enabling the clutch gear ring to mesh with different gears. However, the shift fork is a rigid component, and the distance the clutch gear ring can move up and down is limited. When the drive device directly pulls the shift fork, it is impossible to precisely control the distance the shift fork is pulled, which can easily lead to the shift fork breaking or deforming.

[0004] Chinese invention patent application number 201510473912.5 discloses a clutch for a drum washing machine. In this clutch, the shift fork spring is pulled, and the shift fork rotates around the shift fork connecting pin. One end of the shift fork presses against the connecting plate, causing the connecting plate to move towards the positioning gear plate, thus connecting the fixed shaft wheel frame cover, the positioning gear plate, and the lower bearing seat into one unit. At this time, the internal gear ring, the brake wheel, and the spin-drying shaft rotate in the same direction as a whole. When the shift fork spring is released, the connecting plate spring returns, and the connecting plate moves towards the rotor side. At this time, the rotor, the fixed shaft wheel frame cover, the impeller shaft, the brake wheel, and the spin-drying shaft are combined into one unit and rotate in the same direction as a whole.

[0005] In this invention, a tension spring is used as a buffer component between the shift fork and the drive unit. One end of the tension spring is connected to the shift fork, and the other end is connected to the drive unit, thus solving the problem of the drive unit easily breaking the shift fork and protecting the shift fork from breakage. However, this invention simply adds a spring to solve the problem of easy breakage of the shift fork, and there are still some problems in actual use: the deformation of the spring cannot be accurately controlled, causing the clutch gear ring to be unable to stably enter the engagement state, and failure is likely when switching drive modes; the connection between the spring and the shift fork and drive unit is unstable; and due to the structure of the clutch device and its fixed position in the washing machine, it is difficult to replace the spring when it is damaged.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a buffer assembly for a clutch device, so as to increase the traction distance of the clutch device by means of the buffer assembly and limit the deformation of the buffer assembly so that the clutch device can stably switch the engagement object, and at the same time, it can complete the replacement more conveniently and effortlessly.

[0008] The present invention also aims to provide a clutch device equipped with the above-mentioned buffer components, so as to extend the service life of the clutch device, improve the stability of switching drives through the clutch device, and increase the maintenance convenience of the clutch device.

[0009] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0010] A buffer assembly for a clutch device includes a housing with an internal cavity; a pull tube, one end of which is slidably disposed within the cavity of the housing through the front end wall of the housing; and an elastic element disposed within the cavity of the housing and engaged between the end of the pull tube and the front end wall of the housing.

[0011] Furthermore, the end of the drawing tube is provided with a stop protruding from the drawing tube;

[0012] The front wall of the housing has a sleeve hole that connects the inside and outside of the housing cavity. The end of the pull tube has a radially protruding stop block that passes through the sleeve hole and is set inside the cavity of the housing and can abut against the front wall of the housing. The elastic element is engaged between the stop block and the front wall of the housing.

[0013] Furthermore, it also includes a traction member disposed outside the housing, with the other end of the pull tube disposed outside the housing, one end of the traction member being connected to the other end of the pull tube, and the other end being used to connect to the clutch fork.

[0014] Furthermore, the other end of the pull tube is provided with a first terminal inlet that connects the inside and outside of the pull tube, and one end of the traction member passes through the first terminal inlet and is locked inside the pull tube.

[0015] Furthermore, the first terminal inlet includes a first large notch disposed on the side wall of the tube and a first small notch disposed on the bottom wall of the tube and extending from the center of the bottom wall to the side wall and communicating with the first large notch;

[0016] The traction component is inserted into the first small notch from the first large notch.

[0017] Furthermore, the elastic element presses against the stop block to allow at least a partial entry of the first large notch into the housing, and pulling the pull tube allows the first terminal inlet to fully extend out of the housing.

[0018] Furthermore, it also includes a rear cover that is fitted onto the outside of the housing, the housing being a barrel shape with one end open, and the rear cover being fitted onto the open end of the housing.

[0019] Furthermore, a positioning block is provided on the outer surface of the side wall of the housing, the positioning block is located near the opening end of the housing, and a positioning hole is provided on the side wall of the rear cover that can engage with the positioning block.

[0020] Furthermore, the sidewall of the housing is provided with at least two elastic grooves parallel to the axis of the housing. The elastic grooves extend from the opening end of the housing to the bottom of the housing. The number of positioning blocks is the same as the number of elastic grooves, and the positioning blocks are arranged one-to-one on the sidewalls separated by the elastic grooves.

[0021] The present invention also provides a clutch device, including a shift fork and a traction motor, wherein the traction motor is connected to the shift fork via any of the buffer components described above.

[0022] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0023] 1. The buffer assembly inserts the pull tube into the housing and holds the elastic element between the pull tube and the housing. When the pulling force applied to both ends of the buffer assembly is less than the elastic force of the elastic element, the pull tube is compressed into the housing under the elastic force of the elastic element. When the traction force exceeds the elastic force, the pull tube can be pulled out of the housing, causing the buffer assembly to extend by a certain length. This increases the braking distance of the traction device by utilizing the structure of the buffer assembly, avoiding damage to the clutch device due to deviations in controlling the traction distance. It also ensures that the extension of the buffer assembly is accurate and controllable, enabling stable clutch operation. At the same time, no pre-tightening force is required to install or remove the buffer assembly, making replacement more convenient and labor-saving.

[0024] 2. The buffer assembly compresses the elastic element between the pull tube and the housing, using the compression deformation of the spring to limit the braking distance of the traction motor. Compared to using the tensile deformation of the elastic element to limit the braking distance, this ensures a more stable and accurate braking distance. It avoids control deviations caused by the elastic element's inability to return to its original length after being stretched, and even prevents clutch failure and the inability to complete drive switching.

[0025] 3. By setting a traction component with freely adjustable length, the buffer assembly is connected to the shift fork and traction motor, making the buffer assembly more suitable for clutch devices of various sizes or structures. This reduces the variety of buffer assembly sizes, improves manufacturing efficiency, and saves manufacturing costs.

[0026] 4. By connecting a buffer assembly between the traction motor and the shift fork, the problem of large control deviation of the traction motor easily breaking the shift fork is solved, the service life of the clutch device is extended, the stability of switching drives through the clutch device is improved, and the convenience of maintaining the clutch device is improved.

[0027] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0029] Figure 1 This is a schematic diagram of a buffer assembly of a clutch device in this invention;

[0030] Figure 2 This is an exploded schematic diagram of the buffer assembly of a clutch device in this invention;

[0031] Figure 3 This is a cross-sectional schematic diagram of the buffer assembly of a clutch device in this invention, cut along the central axis.

[0032] Figure 4 This is a schematic diagram of a clutch device equipped with a buffer assembly according to the present invention.

[0033] The components are: 1. Input shaft; 2. Torque transmission sleeve; 3. Clutch sleeve; 4. Fixed base; 5. Input shaft sleeve; 6. Shift fork; 7. Buffer assembly; 8. Traction motor; 71. Rear cover; 711. Positioning hole; 712. Second terminal inlet; 713. Second large notch; 714. Second small notch; 72. Housing; 721. Sleeve hole; 722. Positioning block; 723. Elastic groove; 73. Pull tube; 731. Stop block; 732. Elastic element; 733. Cylindrical cavity; 74. Traction element; 741. Connecting terminal; 742. First terminal inlet; 743. First large notch; 744. First small notch.

[0034] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] like Figure 1 and Figure 4 As shown in the figure, this embodiment introduces a buffer assembly 7 installed in the clutch device.

[0039] Specifically, the clutch device includes an input shaft 1, a torque transmission sleeve 2, a clutch sleeve 3, an input shaft sleeve 5, and a fixed seat 4, which are sequentially connected.

[0040] The fixed seat 4 is spaced apart from the torque transmission sleeve 2 along the axial direction of the input shaft 1. The inner circumferential surface of the clutch sleeve 3 meshes with the outer circumferential surface of the input shaft sleeve 5 and can slide between the fixed seat 4 and the torque transmission sleeve 2 along its axial direction. The top and bottom surfaces of the clutch sleeve 3 are respectively provided with spline teeth that can cooperate with the fixed seat 4 and the torque transmission sleeve 2.

[0041] The clutch device also includes a shift fork 6 movably connected to the clutch sleeve 3 and a traction motor 8. Specifically, the shift fork 6 is rotatably connected to the outer surface of the fixed base 4. The traction motor 8 is connected to one end of the shift fork 6 through a buffer assembly 7, and can drive the shift fork 6 to rotate around the fixed point through traction. In turn, the other end of the shift fork 6 drives the clutch sleeve 3 to move between the fixed base 4 and the torque transmission sleeve 2, so that the clutch sleeve 3 can selectively engage with either the fixed base 4 or the torque transmission sleeve 2.

[0042] like Figure 1As shown, in this embodiment, the buffer assembly 7 includes a housing 72, a pull tube 73, and an elastic element 732. The pull tube 73 is sleeved in the housing 72 and can extend out of the housing 72 along the axial direction of the housing 72. The elastic element 732 is disposed in the gap between the pull tube 73 and the housing 72, and is used to apply an elastic force to the pull tube 73 to retract the housing 72.

[0043] Specifically, the buffer assembly 7 is connected to the shift fork 6 at one end via a pull tube 73 and to the traction motor 8 at the other end via a housing 72. When the traction motor 8 is working, it drives the buffer assembly 7 to move along its length, causing the shift fork 6 to rotate around a fixed point. The shift fork 6 drives the clutch sleeve 3 to move until the clutch sleeve 3 engages with the fixed seat 4.

[0044] Since the shift fork 6 is a rigid component, it will not deform, and the end of the shift fork 6 connected to the buffer assembly 7 will no longer move along the length of the buffer assembly 7. At this time, the pull tube 73 of the buffer assembly 7 will extend out of the housing 72 under the drive of the traction motor 8 to alleviate the increased traction distance due to the control deviation of the traction motor 8 and avoid breaking the shift fork 6.

[0045] In this embodiment, the buffer assembly 7 sleeves the pull tube 73 in the housing 72, and the elastic element 732 is locked between the pull tube 73 and the housing 72. When the pulling force applied to both ends of the buffer assembly 7 is less than the elastic force of the elastic element 732, the pull tube 73 is compressed in the housing 72 under the action of the elastic force of the elastic element 732. When the traction force exceeds the elastic force, the pull tube 73 can be pulled out of the housing 72, causing the buffer assembly 7 to extend by a certain length. Thus, the structure of the buffer assembly 7 increases the braking distance of the traction device, avoids damage to the clutch device due to deviation in controlling the traction distance, and ensures that the extension of the buffer assembly 7 is accurate and controllable, enabling stable clutch operation. At the same time, no pre-tightening force is required to install and remove the buffer assembly 7, making replacement more convenient and labor-saving.

[0046] like Figure 2 and Figure 3 As shown, in order to accurately control the amount of deformation that the buffer assembly 7 can elongate, in another embodiment of the present invention, the elastic element 732 is clamped between the pull tube 73 and the housing 72 in a compressed state.

[0047] Specifically, the drawing tube 73 is configured as a slender cylindrical shape, and a stop 731 protruding from the cylindrical surface of the drawing tube 73 is provided at one end along the length direction of the drawing tube 73. Preferably, the stop 731 is arranged around the entire outer peripheral surface of the drawing tube 73.

[0048] The length of the housing 72 matches the length of the drawing tube 73, and the radial cross-section of the housing 72 is larger than the radial cross-section of the drawing tube 73. The housing 72 is sleeved on the outer periphery of the drawing tube 73, and a sleeve hole 721 is provided on the bottom sidewall of the end of the drawing tube 73 that is sleeved on.

[0049] The other end of the pull tube 73 in the length direction is not provided with a stop 731. The end of the pull tube 73 without the stop 731 passes through the sleeve hole 721, and the end with the stop 731 is sleeved in the cavity of the housing 72.

[0050] The elastic element 732 is disposed in the annular gap between the pull tube 73 and the housing 72. The length direction of the elastic element 732 is parallel to the length direction of the pull tube 73. The elastic element 732 is compressed along the length direction and is installed between the bottom side wall of the housing 72, which has a sleeve hole 721, and the stop block 731 of the pull tube 73.

[0051] Preferably, the elastic element 732 is a compressible spring. The inner diameter of the spring is larger than the diameter of the pull tube 73, and the outer diameter of the spring is smaller than the diameter of the cavity in the housing 72. The spring is fitted into the gap between the pull tube 73 and the housing 72.

[0052] In this embodiment, the buffer assembly 7 compresses the elastic element 732 between the pull tube 73 and the housing 72, using the compression deformation of the spring to limit the braking distance of the traction motor 8. Compared to using the tensile deformation of the elastic element 732 to limit the braking distance, this ensures that the braking distance of the buffer assembly 7 is more stable and accurate. It avoids control deviations caused by the elastic element 732 being unable to return to its original length after being stretched, and even prevents the clutch device from failing and the drive switching from being completed.

[0053] like Figure 3 As shown, in some possible embodiments, in order to improve the adaptability of the buffer assembly 7 to different structures and spatial dimensions of the clutch device, the buffer assembly 7 is also provided with a traction member 74.

[0054] Specifically, a traction member 74 is connected to each end of the buffer assembly 7 along its length. One traction member 74 is connected to the end of the pull tube 73, and the other traction member 74 is connected to the bottom of the housing 72. The length of the traction member 74 can be determined according to the size of the clutch device and the available space.

[0055] Preferably, the traction member 74 is configured as a slender straight rod.

[0056] More preferably, the traction member 74 is a pull rope, one end of which is connected to the buffer assembly 7, and the other end is wrapped around the shift fork 6 or the traction motor 8.

[0057] In this embodiment, by setting a traction member 74 with a freely adjustable length, the buffer assembly 7 is connected to the shift fork 6 and the traction motor 8 using the traction member 74. This allows the buffer assembly 7 to be better suited for clutch devices of various sizes or structures, reducing the variety of sizes of the buffer assembly 7, improving manufacturing efficiency, and saving manufacturing costs.

[0058] like Figure 3 As shown, in another embodiment of the present invention, in order to facilitate the connection between the traction member 74 and the pull tube 73 and the housing 72, a connection terminal 741 is also provided at the end of the traction member 74.

[0059] Specifically, the diameter of the cross-section of the end of the connecting terminal 741 connected to the traction member 74 is larger than the diameter of the traction member 74, and the connection is achieved by the portion of the connecting terminal 741 that extends beyond the traction member 74.

[0060] The connecting terminal 741 is respectively snapped into the pull tube 73 and the housing 72, while the traction member 74 is respectively passed through the pull tube 73 and the housing 72.

[0061] like Figure 2 As shown, in some possible embodiments of the present invention, in order to enable the traction member 74 to be connected to the housing 72 more quickly and conveniently, a second terminal inlet 712 is also provided on the housing 72.

[0062] Specifically, the second terminal inlet 712 is used to accommodate the traction member 74, which is detachably snapped onto the housing 72. The second terminal inlet 712 includes a second large notch 713 provided on the side wall of the housing 72 and a second small notch 714 provided on the bottom wall of the housing 72. The second small notch 714 extends from the center of the bottom side wall of the housing 72 to the side wall and communicates with the second large notch 713.

[0063] When connected to the housing 72, the traction member 74 is inserted from the second large notch 713 into the second small notch 714, and the connecting terminal 741 passes through the second large notch 713 and is snapped onto the bottom wall with the second small notch 714.

[0064] In this embodiment, the second terminal inlet 712 is provided with a second large notch 713 and a second small notch 714 corresponding to the outer shape of the traction member 74. The opening area of ​​the second large notch 713 is larger than the cross-section of the connecting terminal 741 to allow the connecting terminal 741 to pass through. At the same time, the opening area of ​​the second small notch 714 is smaller than the cross-section of the connecting terminal 741 and is only enough for the traction member 74 to pass through. This allows the traction member 74 to easily pass through the second terminal inlet 712 and engage with the housing 72, making it more convenient to replace the buffer assembly 7.

[0065] like Figure 2As shown, in some possible embodiments of the present invention, in order to connect the traction member 74 to the pull tube 73 more quickly and conveniently, a first terminal inlet 742 is provided on the pull tube 73.

[0066] Specifically, a first terminal inlet 742 is provided in the pull tube 73 and extends out of the housing 72 at one end. Correspondingly, a first large notch 743 is formed on the side wall of the pull tube 73, and a first small notch 744 is provided on the bottom side wall of the pull tube 73 and communicates radially with the first large notch 743.

[0067] To prevent the traction member 74 from disengaging from the first terminal inlet 742 when the buffer assembly 7 is not under force, the first large notch 743 is positioned at a certain distance from the end of the pull tube 73 on its side wall. This ensures that when no tension is applied, the elastic member 732 presses against the pull tube 73, causing the first large notch 743 to at least partially enter the housing 72, and pulling the pull tube 73 allows the first terminal inlet 742 to fully extend out of the housing 72.

[0068] In this embodiment, the first terminal inlet 742 is provided with a first large notch 743 and a first small notch 744 corresponding to the external structure of the traction member 74. The opening area of ​​the first large notch 743 is larger than the cross-section of the connecting terminal 741 to allow the connecting terminal 741 to pass through. At the same time, the opening area of ​​the first small notch 744 is smaller than the cross-section of the connecting terminal 741 and is only enough for the traction member 74 to pass through. This allows the traction member 74 to easily pass through the first terminal inlet 742 and engage with the pull tube 73, making it more convenient to replace the buffer assembly 7.

[0069] like Figure 1 and Figure 2 As shown, in another embodiment of the present invention, in order to reduce the difficulty of manufacturing the housing 72, the housing 72 is set as a barrel shape with one end open, so that the pull tube 73 and the elastic member 732 can be easily inserted into the housing 72 through the opening.

[0070] Specifically, the buffer assembly 7 also includes a rear cover 71 that is sleeved on the outside of the housing 72. The rear cover 71 is sleeved from the open end of the housing 72, and the rear cover 71 and the housing 72 together fix the pull tube 73 and the elastic member 732.

[0071] Furthermore, the elastic element 732 is disposed in the annular gap between the pull tube 73 and the housing 72. The length direction of the elastic element 732 is parallel to the length direction of the pull tube 73. The elastic element 732 is compressed along the length direction and is installed between the bottom side wall of the housing 72, which has a sleeve hole 721, and the stop 731 of the pull tube 73.

[0072] Preferably, the pull tube 73 has a cylindrical cavity 733 along its axial direction. The cylindrical cavity 733 extends through the end face of the end where the stop block 731 is located in the pull tube 73. The connecting terminal 741, which is snapped into the cavity of the rear cover 71, can enter the cylindrical cavity 733.

[0073] In this embodiment, the housing 72 is configured as a semi-open barrel-shaped structure, and the rear cover 71 is fastened to the housing 72 to form a cavity for accommodating the pull tube 73 and the elastic element 732. This makes the manufacturing of the housing 72 simpler and more convenient, improves manufacturing efficiency, and reduces the difficulty of installing the pull tube 73 and the elastic element 732 into the housing 72.

[0074] like Figure 2 As shown, in some possible embodiments of the present invention, in order to improve the stability of the connection between the back cover 71 and the housing 72 and speed up the assembly efficiency, a connection structure that facilitates fastening is provided on the housing 72 and the back cover 71.

[0075] For example, an external thread is provided on the outer surface of the side wall of the housing 72, and an internal thread is provided on the inner surface of the side wall of the rear cover 71 accordingly. The rear cover 71 and the housing 72 can be connected by the internal and external threads.

[0076] Preferably, a positioning block 722 is provided on the outer surface of the side wall of the housing 72. The positioning block 722 is located near the opening end of the housing 72, and its cross-section is triangular in a plane parallel to the axis of the housing 72. This triangle gradually protrudes from the outer surface of the housing 72 from the side near the opening end to the side away from the opening end. A positioning hole 711 is provided on the side wall of the rear cover 71 to engage with the positioning block 722.

[0077] In this embodiment, by providing a detachable connection structure on the housing 72 and the rear cover 71, the assembly efficiency of the buffer assembly 7 is improved, the stability of the connection between the rear cover 71 and the housing 72 is improved, and the maintenance and replacement of parts are facilitated.

[0078] like Figure 2 As shown, in another embodiment of the present invention, in order to enable the positioning block 722 provided on the housing 72 to easily disengage from the positioning hole 711 of the rear cover 71, making the disassembly process simple and effortless, an elastic groove 723 that can bend and deform the side wall of the housing 72 is also provided on the housing 72.

[0079] Specifically, the elastic groove 723 is provided on the side wall of the housing 72 and is parallel to the axis of the housing 72. The elastic groove 723 extends from the open end of the housing 72 toward the bottom of the housing 72.

[0080] Preferably, at least two elastic grooves 723 are provided and are evenly distributed on the side wall of the housing 72.

[0081] Furthermore, the number of positioning blocks 722 and elastic grooves 723 is the same, and the positioning blocks 722 are arranged one-to-one on the sidewalls separated by the elastic grooves 723.

[0082] Preferably, the positioning hole 711 is configured as a narrow slot. The length direction of the positioning hole 711 is parallel to the axis of the rear cover 71. The length of the positioning hole 711 is greater than the length of the positioning block 722 along the axis of the housing 72.

[0083] When the rear cover 71 is fitted onto the housing 72, the positioning block 722 can move within the length range of the positioning hole 711. When the stop block 731 presses against the rear cover 71 under the elastic action of the compression spring, the positioning block 722 abuts against the end of the positioning hole 711 near the opening.

[0084] In this embodiment, by providing elastic grooves 723 along the axial direction of the housing 72, the sidewalls of the housing 72 become separate, easily bendable elastic structures, thereby making it easy to press the positioning block 722 and disengage the positioning block 722 from the positioning hole 711, so that the back cover 71 can be removed from the housing 72 with less effort, which provides convenience for maintenance and replacement of parts.

[0085] like Figure 4 As shown, in another embodiment of the present invention, a clutch device is described. The clutch device includes a torque transmission shaft sleeve 2, a clutch sleeve 3, and a fixed seat 4. The top and bottom surfaces of the clutch sleeve 3 are respectively provided with spline teeth that can mesh with the fixed seat 4 and the torque transmission shaft sleeve 2. It also includes a shift fork 6 and a traction motor 8. The traction motor 8 is connected to the shift fork 6 through any of the above-mentioned buffer components 7.

[0086] The shift fork 6 is movably connected to the clutch sleeve 3 and drives the clutch sleeve 3 to move between the fixed seat 4 and the torque transmission shaft sleeve 2, controlling the engagement with either the fixed seat 4 or the torque transmission shaft sleeve 2.

[0087] like Figure 4 As shown, specifically, the clutch device includes an input shaft 1, a torque transmission sleeve 2, a clutch sleeve 3, an input shaft sleeve 5, and a fixed seat 4, which are sequentially connected.

[0088] The fixed seat 4 is spaced apart from the torque transmission sleeve 2 along the axial direction of the input shaft 1. The inner circumferential surface of the clutch sleeve 3 meshes with the outer circumferential surface of the input shaft sleeve 5 and can slide between the fixed seat 4 and the torque transmission sleeve 2 along its axial direction. The top and bottom surfaces of the clutch sleeve 3 are respectively provided with spline teeth that can cooperate with the fixed seat 4 and the torque transmission sleeve 2.

[0089] The clutch device also includes a shift fork 6 movably connected to the clutch sleeve 3 and a traction motor 8. Specifically, the shift fork 6 is rotatably connected to the outer surface of the fixed base 4. The traction motor 8 is connected to one end of the shift fork 6 through a buffer assembly 7, and can drive the shift fork 6 to rotate around the fixed point through traction. In turn, the other end of the shift fork 6 drives the clutch sleeve 3 to move between the fixed base 4 and the torque transmission sleeve 2, so that the clutch sleeve 3 can selectively engage with either the fixed base 4 or the torque transmission sleeve 2.

[0090] In this embodiment, by connecting a buffer assembly 7 between the traction motor 8 and the shift fork 6, the problem of large control deviation of the traction motor 8 easily breaking the shift fork 6 is solved, the service life of the clutch device is extended, the stability of switching drives through the clutch device is improved, and the convenience of maintaining the clutch device is improved.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A buffer assembly of a clutch device applied to a laundry treating apparatus, characterized in that, The buffer assembly comprises: a shell (72) having a cavity formed therein, a sleeve hole (721) being formed in a front end wall of the shell (72) to communicate the cavity of the shell (72) with the outside; a pull tube (73) having one end slidably arranged in the cavity of the shell (72) through the sleeve hole (721) of the front end wall of the shell (72), the pull tube (73) having a radially protruding stopper (731) at the end, the stopper (731) being slidable in the cavity of the shell (72) and abutting against the front end wall of the shell (72); a resilient member (732) arranged in the cavity of the shell (72) and compressed between the stopper (731) at the end of the pull tube (73) and the front end wall of the shell (72) to apply a resilient force to the pull tube (73) to retract the shell (72); a traction member (74) arranged outside the shell (72), the other end of the pull tube (73) being arranged outside the shell (72), one end of the traction member (74) being connected to the other end of the pull tube (73) and the other end being used to connect a shift fork of a clutch device.

2. The buffer assembly of the clutch device according to claim 1, wherein: an end of the other end of the pull tube (73) is provided with a first terminal inlet (742) to communicate the inside and outside of the pull tube, and one end of the traction member (74) is clamped in the pull tube through the first terminal inlet (742).

3. The buffer assembly of the clutch device according to claim 2, wherein: the first terminal inlet (742) comprises a first large gap (743) arranged on a side wall of the pull tube (73) and a first small gap (744) arranged on a bottom wall of the pull tube (73) and extending from the center of the bottom wall to the side wall to communicate with the first large gap (743); the traction member (74) is sleeved into the first small gap (744) from the first large gap (743).

4. The buffer assembly of the clutch device according to claim 3, wherein: the resilient member (732) presses the stopper (731) to make the first large gap (743) at least partially enter the shell (72), and pulling the pull tube (73) can make the first terminal inlet (742) completely extend out of the shell (72).

5. A snubber assembly for a clutch device as claimed in claim 4, wherein a rear cover (71) is further arranged outside the shell (72), the shell (72) is in the shape of a barrel with one end open, and the rear cover (71) is sleeved from the open end of the shell (72).

6. The buffer assembly of the clutch device according to claim 5, wherein: an outer surface of a side wall of the shell (72) is provided with a positioning block (722) arranged close to the open end of the shell (72), and a side wall of the rear cover (71) is provided with a positioning hole (711) capable of clamping the positioning block (722).

7. The buffer assembly of the clutch device according to claim 6, wherein: The side wall of the shell (72) is provided with at least two elastic grooves (723) parallel to the axis of the shell (72), the elastic grooves (723) extend from the opening end of the shell (72) to the bottom of the shell (72), the number of the positioning blocks (722) is the same as that of the elastic grooves (723), and the positioning blocks (722) are arranged one by one on the side walls separated by the elastic grooves (723).

8. A clutching device characterized by The transmission comprises a shift fork (6) and a traction motor (8), the traction motor (8) being connected to the shift fork (6) through the buffer assembly (7) according to any one of claims 1-7.

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