A new type of washing machine deceleration clutch

Abstract

The utility model discloses a novel washing machine reduction clutch, include: input shaft, input shaft can freely rotate the sleeve of input shaft sleeve is in, reduction mechanism, input shaft, input shaft sleeve's first end is connected with reduction mechanism respectively, the transmission moment sleeve, fixedly set up in the second end of input shaft, clutch mechanism, including clutch cover, fork, fork torsional spring and fork positioning disc, the fork positioning disc fixed sleeve is set in input shaft sleeve's first end outer periphery, the clutch cover can slide up and down the sleeve of input shaft sleeve, the clutch cover with input shaft sleeve between the circumferential limit connection, the middle part of fork is rotatablely installed on the fork positioning disc through fork pivot, the fork torsional spring sleeve is set on fork pivot, and the both ends of fork torsional spring are respectively abutted on fork, fork positioning disc, one end of fork is inserted in clutch cover, the fork has fork positioning part, and the fork positioning disc has positioning disc positioning part.

Description

Technical Field

[0001] This utility model relates to the field of laundry equipment technology, specifically to a novel washing machine deceleration clutch. Background Technology

[0002] As consumers increasingly demand higher quality of home life, large-capacity, high-performance washing machines have become the mainstream trend in the market. Correspondingly, the technology and structure of the reduction clutch, a core transmission component of the washing machine, are also continuously evolving to meet the washing and spin-drying performance requirements under greater loads.

[0003] In the development of washing machine reduction clutches, the clutch structure has undergone significant technological changes. Early, commonly used square wire spring clutch structures were widely adopted due to their simplicity and low cost. However, square wire spring structures suffer from problems such as easy wear, fatigue failure, and limited torque transmission, especially under the high load conditions of large-capacity washing machines, where their reliability and durability face challenges.

[0004] To overcome the aforementioned shortcomings, existing technologies have developed clutch devices employing a shift fork structure. This structure typically uses a shift fork driven by a brake arm to control the engagement and disengagement of the connecting disc and the torque transmission sleeve, thereby switching between washing and spin-drying functions. In existing shift fork designs, during washing mode, the shift fork relies on a continuous external force—usually from the brake arm—to overcome the spring force, pulling the shift fork and holding it in a specific position to ensure complete and effective separation of the clutch sleeve and the torque transmission sleeve. If the separation is incomplete, contact or interference between the two during washing mode will lead to abnormal noise, increased wear, and even motor overload, preventing normal washing operations.

[0005] However, those skilled in the art have discovered an inherent design flaw in this existing shift fork structure that relies on continuous external force: the tension applied to the shift fork by the brake arm is ultimately transmitted and acts on the shift fork positioning plate on which the shift fork is mounted. During the long-term, frequent operation of the washing machine, this shift fork positioning plate is under unidirectional force for extended periods, making it highly susceptible to cumulative plastic deformation or creep. Once the shift fork positioning plate deforms, its reference position for positioning and supporting the shift fork will shift accordingly.

[0006] The direct consequence of this offset is that the actual working position of the shift fork deviates from its original design position. This manifests as a smaller separation gap between the clutch sleeve and the torque transmission bushing, which should be fully disengaged. When the gap becomes too small, the two may come into contact or even mechanically interfere during washing mode, preventing the washing action from being completed effectively. Furthermore, continuous interference can lead to abnormal wear of parts, increased noise, and a shortened overall machine lifespan.

[0007] Therefore, the existing shift fork structure, due to its mechanical design deficiencies, carries the risk of deformation of the shift fork positioning plate, leading to malfunction. The industry urgently needs a new shift fork structure design that can fundamentally avoid or significantly reduce the deformation of the shift fork positioning plate under long-term stress, ensuring reliable and thorough separation of the connecting plate and torque transmission bushing during washing operations, thereby improving the long-term operational stability and durability of the clutch in large-capacity washing machines.

[0008] In view of the above, this utility model patent is hereby proposed. Utility Model Content

[0009] To address the aforementioned problems, this utility model aims to provide a novel reduction clutch for washing machines, specifically employing the following technical solution:

[0010] A novel washing machine reduction clutch includes:

[0011] Input axis;

[0012] An input shaft sleeve, wherein the input shaft is rotatably fitted inside the input shaft sleeve;

[0013] A speed reduction mechanism, wherein the first ends of the input shaft and the input shaft sleeve are respectively connected to the speed reduction mechanism;

[0014] A torque transmission sleeve is fixedly mounted on the second end of the input shaft;

[0015] A clutch mechanism includes a clutch sleeve, a shift fork, a shift fork torsion spring, and a shift fork positioning plate. The shift fork positioning plate is fixedly sleeved on the outer periphery of the first end of the input shaft sleeve. The clutch sleeve is slidably fitted onto the input shaft sleeve, and the clutch sleeve and the input shaft sleeve are circumferentially limited. The middle part of the shift fork is rotatably mounted on the shift fork positioning plate via a shift fork pivot. The shift fork torsion spring is fitted onto the shift fork pivot, and both ends of the shift fork torsion spring abut against the shift fork and the shift fork positioning plate, respectively. One end of the shift fork is inserted into the clutch sleeve. The shift fork has a shift fork positioning part, and the shift fork positioning plate has a positioning plate positioning part.

[0016] During washing, the torsion spring of the shift fork drives one end of the shift fork to slide upward and separate from the torque transmission shaft sleeve, and the shift fork positioning part abuts and cooperates with the positioning disk positioning part;

[0017] During dehydration, the other end of the drive fork is driven to rotate relative to the fork positioning plate. One end of the fork moves downward to disengage from the clutch sleeve, and the clutch sleeve slides down to engage with the torque transmission shaft sleeve.

[0018] As an optional embodiment of this utility model, one end of the shift fork has a fork joint, which forks into the outer periphery of the clutch sleeve. The shift fork positioning part is located on the side wall of the shift fork facing the shift fork positioning disc, and the shift fork positioning part is close to one end of the fork joint.

[0019] As an optional embodiment of this utility model, the shift fork positioning part is a first positioning protrusion protruding from the side wall of the shift fork, and the first positioning protrusion has a first positioning plane.

[0020] As an optional embodiment of this utility model, the shift fork positioning plate includes an annular plate body and a shift fork mounting seat located on one side of the annular plate body. The middle part of the shift fork is rotatably mounted on the shift fork mounting seat via a shift fork pivot. The positioning part of the positioning plate is located on the annular plate body and inside the shift fork mounting seat.

[0021] As an optional embodiment of this utility model, the positioning part of the positioning disk is a second positioning protrusion protruding from the annular disk body, and the second positioning protrusion has a second positioning plane;

[0022] During washing, the second positioning plane abuts against the first positioning plane to position the shift fork to move the clutch sleeve.

[0023] As an optional embodiment of this utility model, a novel washing machine deceleration clutch of this utility model includes a reducer housing and a drive arm. The shift fork positioning plate is fixedly installed on the bottom wall of the reducer housing, and the drive arm is installed on the outer peripheral wall of the reducer housing through a drive arm pivot. The drive arm can be driven to rotate along the outer peripheral surface of the reducer housing.

[0024] The drive arm has a drive end, and the other end of the shift fork is located on the outer periphery of the reducer housing and corresponds to the drive end;

[0025] During washing, the drive arm is in its natural state, with the drive end and the other end of the shift fork spaced apart. During spin-drying, the drive arm is driven to rotate, and the drive end moves the other end of the shift fork, causing the shift fork to rotate relative to the shift fork positioning plate.

[0026] As an optional embodiment of this utility model, the drive arm has a limiting end, the limiting end and the drive end are located on both sides of the drive arm, and a drive arm torsion spring is mounted on the drive arm shaft, with the two ends of the drive arm torsion spring respectively abutting against the reducer housing and the drive arm.

[0027] During the dehydration process, the drive arm is driven to rotate, the drive arm torsion spring is twisted and deformed, and the limiting end has a gap with the outer peripheral wall of the reducer housing. During the washing process, the drive arm is released, the drive arm torsion spring returns to its original deformation, and the drive arm is driven to reverse and reset, and the limiting end abuts against the outer peripheral wall of the reducer housing.

[0028] As an optional embodiment of this utility model, the limiting end has an arc-shaped limiting end face that matches the outer peripheral wall surface of the reducer housing.

[0029] As an optional embodiment of this utility model, the clutch sleeve is provided with an internal spline, and the input shaft sleeve is provided with a matching external spline on its outer peripheral wall. The clutch sleeve and the input shaft sleeve are connected in a circumferential limiting manner by assembling the internal spline and the external spline.

[0030] As an optional embodiment of this utility model, a rubber sleeve is fitted on the torque transmission bushing to buffer the engagement between the clutch sleeve and the torque transmission bushing.

[0031] This utility model discloses a novel washing machine reduction clutch, which has the following technical effects:

[0032] (1) The continuous external force that caused the shift fork positioning plate to deform was completely eliminated, solving the problem at its root.

[0033] In the washing state, the separation of the clutch sleeve and torque transmission sleeve no longer relies on the continuous pulling force applied by the brake arm. Instead, the torque of the shift fork torsion spring drives the shift fork to rotate, thereby moving the clutch sleeve upward to achieve separation. When separation is complete, the shift fork positioning part and the shift fork positioning plate positioning part are mechanically and rigidly engaged. At this point, the system reaches a state of equilibrium. The force required to maintain separation is provided by the shift fork torsion spring and internally absorbed, forming a closed internal force system, and no longer exerts any tensile or bending stress on the lower shift fork positioning plate that would cause deformation. This eliminates the basis for deformation of the shift fork positioning plate due to long-term stress.

[0034] (2) It ensures the long-term stability and reliability of the separation gap under washing conditions.

[0035] Because the contact between the shift fork positioning part and the positioning plate positioning part is a definite mechanical hard limit, this contact point defines the final precise position of the shift fork in the washing state. As long as these two positioning parts do not wear (their design life is much longer than the deformation time of traditional structures), the position of the shift fork will not shift due to any external factors. Therefore, the clutch sleeve position determined by the shift fork position and the separation clearance between the clutch sleeve and the torque transmission shaft sleeve can always maintain the ideal state of the initial design, effectively avoiding the interference risk caused by the narrowing of the clearance, and ensuring that the washing action can be completed in a long-term, effective, and reliable manner.

[0036] (3) Improved the system's anti-interference ability and durability.

[0037] This structure enters a self-locking stable state after the disengagement action is completed, without relying on the continuous precise positioning of external components (such as the positional accuracy of the brake arm). Therefore, even slight wear or misalignment of external parts will not affect the disengagement state inside the clutch. The stability and reliability of the system depend only on the strength and wear resistance of a few key internal components, greatly enhancing its overall lifespan and resistance to performance degradation.

[0038] In summary, this utility model provides a novel washing machine deceleration clutch that innovatively solves the fundamental defects inherent in traditional shift fork structures by changing "dynamic holding dependent on external force" to "static self-locking dependent on internal torsion springs and mechanical limits," thus ensuring the accuracy and reliability of the washing and spin-drying function switching throughout the entire life cycle of the washing machine. Attached image description:

[0039] Figure 1 This utility model provides an overall assembly drawing (washing operation) of a novel washing machine reduction clutch.

[0040] Figure 2 This utility model provides an overall assembly drawing of a novel washing machine reduction clutch (spinning mode);

[0041] Figure 3 A cross-sectional view (washing condition) of a novel washing machine deceleration clutch according to an embodiment of this utility model;

[0042] Figure 4 This utility model embodiment provides a novel washing machine deceleration clutch. Figure 3 A magnified view of a section at point E in the middle;

[0043] Figure 5 Assembly diagram of the shift fork and shift fork positioning plate in this embodiment of the utility model;

[0044] Figure 6 A schematic diagram of the structure of the shift fork in this embodiment of the utility model;

[0045] Figure 7 A schematic diagram of the structure of the shift fork positioning plate according to an embodiment of this utility model;

[0046] Figure 8 A bottom view of a novel washing machine deceleration clutch according to an embodiment of this utility model;

[0047] Figure 9 This utility model embodiment provides a novel washing machine deceleration clutch. Figure 8 Enlarged view of a portion of the image;

[0048] Figure 10Front view of the clutch sleeve in this embodiment of the utility model;

[0049] Figure 11 A cross-sectional view of the clutch sleeve in an embodiment of this utility model;

[0050] Figure 12 The clutch sleeve edge of this utility model embodiment Figure 11 A magnified view of a section at point D;

[0051] Figure 13 A cross-sectional view of the torque transmission bushing according to an embodiment of this utility model;

[0052] Figure 14 Front view of the torque transmission bushing of this utility model embodiment;

[0053] Figure 15 In this embodiment of the utility model, the torque transmission shaft sleeve is along Figure 14 A magnified view of a section at point C. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0055] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0056] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0057] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0058] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0059] Example 1

[0060] See Figures 1 to 3 , Figures 5 to 15 As shown, a novel washing machine reduction clutch according to this embodiment includes:

[0061] Input axis 1;

[0062] Input shaft sleeve 4, the input shaft 1 is rotatably sleeved in the input shaft sleeve 4;

[0063] The first ends of the input shaft 1 and the input shaft sleeve 4 are respectively connected to the reduction mechanism 22;

[0064] The torque transmission sleeve 2 is fixedly disposed at the second end of the input shaft 1;

[0065] The clutch mechanism includes a clutch sleeve 3, a shift fork 6, a shift fork torsion spring 25, and a shift fork positioning plate 7. The shift fork positioning plate 7 is fixedly sleeved on the outer periphery of the first end of the input shaft sleeve 1. The clutch sleeve 3 is slidably sleeved on the input shaft sleeve 4. The clutch sleeve 3 and the input shaft sleeve 4 are circumferentially limited. The middle part of the shift fork 6 is rotatably mounted on the shift fork positioning plate 7 through a shift fork pivot 19. The shift fork torsion spring 25 is sleeved on the shift fork pivot 19. The two ends of the shift fork torsion spring 25 abut against the shift fork 6 and the shift fork positioning plate 7, respectively. One end of the shift fork 6 is inserted into the clutch sleeve 3. The shift fork 6 has a shift fork positioning part 601, and the shift fork positioning plate 7 has a positioning plate positioning part 701.

[0066] During the washing process, the torsion spring 25 drives one end of the shift fork 6 to push the clutch sleeve 3 upward to separate it from the torque transmission sleeve 2, and the shift fork positioning part 601 abuts and cooperates with the positioning disk positioning part 701.

[0067] During dehydration, the other end of the drive fork 6 is driven to rotate relative to the fork positioning disk 7. One end of the fork 6 disengages downward from the clutch sleeve 3, and the clutch sleeve 3 slides down to engage with the torque transmission shaft sleeve 2.

[0068] This embodiment of a novel washing machine deceleration clutch has the following technical advantages:

[0069] (1) The continuous external force that caused the shift fork positioning plate 7 to deform was completely eliminated, and the problem was solved at its root.

[0070] In the washing state, the separation of clutch sleeve 3 and torque transmission sleeve 2 no longer relies on the continuous pulling force applied by the brake arm. Instead, the torque of the shift fork torsion spring 25 drives the shift fork 6 to rotate, thereby moving the clutch sleeve 3 upward to achieve separation. When the separation is complete, the shift fork positioning part 601 of the shift fork 6 and the positioning plate positioning part 701 of the shift fork positioning plate 7 abut against each other through mechanical hard limiting. At this time, the system reaches a balanced state, and the force required to maintain separation is provided by the shift fork torsion spring 25 and internally absorbed, forming a closed internal force system, and no longer exerts any tensile or bending stress on the lower shift fork positioning plate 7 that would cause it to deform. This eliminates the basis for the deformation of the shift fork positioning plate 7 due to long-term stress.

[0071] (2) It ensures the long-term stability and reliability of the separation gap under washing conditions.

[0072] Since the contact between the shift fork positioning part 601 and the positioning plate positioning part 701 is a definite mechanical hard limit, this contact point defines the final precise position of the shift fork 6 in the washing state. As long as these two positioning parts 601 do not wear (their design life is much longer than the deformation time of conventional structures), the position of the shift fork 6 will not shift due to any external factors. Therefore, the position of the clutch sleeve 3 determined by the position of the shift fork 6, as well as the separation gap between the clutch sleeve 3 and the torque transmission bushing 2, can always maintain the ideal state of the initial design, effectively avoiding the interference risk caused by the narrowing of the gap, and ensuring that the washing action can be completed in a long-term, effective, and reliable manner.

[0073] (3) Improved the system's anti-interference ability and durability.

[0074] This structure enters a self-locking stable state after the disengagement action is completed, without relying on the continuous precise positioning of external components (such as the positional accuracy of the brake arm). Therefore, even slight wear or misalignment of external parts will not affect the disengagement state inside the clutch. The stability and reliability of the system depend only on the strength and wear resistance of a few key internal components, greatly enhancing its overall lifespan and resistance to performance degradation.

[0075] In summary, this embodiment of a novel washing machine deceleration clutch innovatively solves the fundamental defects inherent in traditional shift fork structures by changing "dynamic holding dependent on external force" to "static self-locking dependent on internal torsion springs and mechanical limits," thus ensuring the accuracy and reliability of the washing and spin-drying function switching of the washing machine throughout its entire life cycle.

[0076] See Figures 5 to 7 As shown, in this embodiment, one end of the shift fork 6 has a fork joint 603, which forks onto the outer periphery of the clutch sleeve 3. The shift fork positioning part 601 is located on the side wall of the shift fork 6 facing the shift fork positioning disk 7, and the shift fork positioning part 601 is close to one end of the fork joint 603.

[0077] In this embodiment, the shift fork 6 has a shift fork mounting hole 602 in the middle for mounting the shift fork shaft 19. The fork joint 603 is located at one end of the shift fork mounting hole 602. The shift fork 6 has a driving part 604 at the other end of the shift fork mounting hole 602. The driving part 604 cooperates with an external driving component (such as a driving arm). The external driving component acts on the driving part 604 to make the middle part of the shift fork 6 rotate relative to the shift fork shaft 19.

[0078] In this embodiment, the shift fork positioning part 601 is a first positioning protrusion protruding from the side wall of the shift fork 6, and the first positioning protrusion has a first positioning plane.

[0079] The shift fork positioning plate 7 described in this embodiment includes an annular plate body 703 and a shift fork mounting base 702 located on one side of the annular plate body 703. The shift fork 6 is rotatably mounted on the shift fork mounting base 702 through the shift fork rotating shaft 19. The positioning plate positioning part 701 is located on the annular plate body 703 and inside the shift fork mounting base 702.

[0080] In this embodiment, the positioning part 701 of the positioning disc is a second positioning protrusion protruding from the annular disc body 703, and the second positioning protrusion has a second positioning plane. During washing, the second positioning plane abuts against the first positioning plane to position the shift fork 6 to move the clutch sleeve 3.

[0081] To achieve the rotation of the shift fork 6 in this embodiment, a novel washing machine deceleration clutch of this embodiment includes a reducer housing and a drive arm 8. The shift fork positioning plate 7 is fixedly installed on the bottom wall of the reducer housing, and the drive arm 8 is installed on the outer peripheral wall of the reducer housing through a drive arm pivot 13. The drive arm 8 can be driven to rotate along the outer peripheral surface of the reducer housing. The drive arm 8 has a drive end 801, and the other end of the shift fork 6 is located on the outer periphery of the reducer housing and corresponds to the drive end 801.

[0082] During washing, the drive arm 8 is in its natural state, and the drive end 801 and the drive part 604 of the shift fork 6 are spaced apart (e.g., Figure 9As shown at point B in the diagram, during the dehydration process, the drive arm 8 is driven to rotate, and the drive end 801 moves the drive part 604 of the shift fork 6, causing the shift fork 6 to rotate relative to the shift fork positioning disk 7.

[0083] See Figure 8 As shown, the drive arm 8 in this embodiment has a limiting end 802. The limiting end 802 and the drive end 801 are located on both sides of the drive arm 8. The drive arm torsion spring 12 is mounted on the drive arm shaft 13. The two ends of the drive arm torsion spring 12 abut against the reducer housing and the drive arm 8, respectively.

[0084] During the dehydration process, the drive arm 8 is driven to rotate, the drive arm torsion spring 12 is twisted and deformed, and the limiting end 802 has a gap with the outer peripheral wall of the reducer housing. During the washing process, the drive arm 8 is released, the drive arm torsion spring 12 returns to its original deformation, and the drive arm 8 is driven to reverse and reset. The limiting end 802 abuts against the outer peripheral wall of the reducer housing, thereby limiting the reset position of the drive arm 8.

[0085] Furthermore, the limiting end 802 described in this embodiment has an arc-shaped limiting end face that matches the outer peripheral wall surface of the reducer housing (e.g., Figure 8 (As shown at point A in the diagram).

[0086] The reducer housing in this embodiment includes an upper housing 9 and a lower housing 14. The upper housing 9 and the lower housing 14 are fixedly connected to enclose a mounting chamber, and the reduction mechanism 22 is installed in the mounting chamber. In this embodiment, the shift fork positioning plate 7 and the drive arm 8 are respectively installed on the lower housing 14.

[0087] See Figure 3 As shown, a novel washing machine deceleration clutch of this embodiment includes a clutch sleeve spring 5. The clutch sleeve spring 5 is sleeved on the outer periphery of the input shaft sleeve 4 and keeps it from contacting it. The upper end of the clutch sleeve spring 5 abuts against the spring cover 26, and the lower end abuts against the clutch sleeve 3.

[0088] During washing, the clutch sleeve 3 slides upward under the drive of the shift fork 6, compressing the clutch sleeve spring 5; during spin-drying, the shift fork part 603 of the shift fork 6 moves downward and separates from the clutch sleeve 3, the clutch sleeve 3 no longer applies pressure to the clutch sleeve spring 5, and the compressed clutch sleeve spring 5 restores its deformation, pushing the clutch sleeve 3 downward to engage with the torque transmission shaft sleeve 2.

[0089] In this embodiment, the clutch sleeve 3 has an internal spline, and the input shaft sleeve 4 has a matching external spline on its outer peripheral wall. The clutch sleeve 3 and the input shaft sleeve 4 are connected in a circumferential limiting manner through the internal and external splines. Thus, during washing, the clutch sleeve 3 separates from the torque transmission sleeve 2 on the input shaft 1, and the rotation on the input shaft 1 is not transmitted to the input shaft sleeve. The rotation of the input shaft 1 is reduced and output to the washing machine impeller via the reduction mechanism 22. During spin-drying, the clutch sleeve 3 engages with the torque transmission sleeve 2 on the input shaft 1, and the rotation on the input shaft 1 is simultaneously transmitted to the input shaft sleeve 4. The input shaft 1 and the input shaft sleeve 4 rotate at the same speed and in the same direction, and the rotation is output to the washing machine impeller and the inner tub at the same speed and in the same direction via the reduction mechanism 22.

[0090] See Figure 13 As shown, the torque transmission bushing 2 in this embodiment is equipped with a rubber sleeve 15, which is used to buffer the engagement between the clutch sleeve 3 and the torque transmission bushing 2, thereby achieving a buffering and noise reduction effect.

[0091] See Figures 11 to 15 As shown, in this embodiment, the torque transmission sleeve 2 has torque transmission sleeve meshing teeth 201, and the clutch sleeve 3 has clutch sleeve meshing teeth 301. The beveled end face design of the torque transmission sleeve meshing teeth 201 and the clutch sleeve meshing teeth 301 in this embodiment ensures that the clutch sleeve 3 and the torque transmission sleeve 2 are effectively engaged during dehydration. Figure 12 As shown, the inclined angle of the beveled end face of the clutch sleeve engagement tooth 301 is α, specifically, α = 4°. Figure 15 As shown, the inclined angle of the tooth profile end face of the torque transmission shaft sleeve meshing tooth 201 is β, specifically, β = 4°.

[0092] In this embodiment, the torque transmission sleeve 2 has an internal spline, and the input shaft 1 has an external spline. The torque transmission sleeve 2 is assembled on the input shaft 1 and connected to the input shaft 1 through the spline.

[0093] The working principle of this novel washing machine reduction clutch is as follows:

[0094] During washing, the brake arm 8 does not contact the shift fork 6, the clutch sleeve 3 separates from the torque transmission sleeve 2, the motor drives the torque transmission sleeve 2 and the input shaft 1 to rotate, the input shaft 1 is reduced in speed by the reduction mechanism 22, and the rotational motion of the motor is transmitted to the impeller shaft 11, and then to the impeller mounted on the impeller shaft 11. In this embodiment, the washing machine reduction clutch has no brake band and a one-way bearing design, and the washing machine inner tub mounted on the inner tub shaft 10 will rotate with it to realize the hand washing function.

[0095] During the spin-drying process, the brake arm 8 is pulled open by the traction motor. The drive end 801 on the brake arm 8 moves the shift fork 6 inward, the shift fork 6 disengages from the clutch sleeve 3, the clutch sleeve spring 5 returns to its original position, and the clutch sleeve 3 moves downward under the action of the clutch sleeve spring 5. After the clutch sleeve 3 moves downward, it engages with the torque transmission shaft sleeve 2. The torque transmission shaft sleeve 2 and the input shaft sleeve 4 are connected as one unit through the clutch sleeve 3. The motor drives the torque transmission shaft sleeve 2 to rotate, which in turn drives the clutch sleeve 3, the input shaft sleeve 4, the inner tub shaft 10, and the inner tub of the washing machine mounted on the inner tub shaft 10 to rotate.

[0096] Example 2

[0097] See Figures 1 to 4 As shown, a novel washing machine reduction clutch according to this embodiment includes:

[0098] Impeller shaft 11;

[0099] Inner barrel shaft 10, the inner barrel shaft 10 is a hollow bushing, and the impeller shaft 11 is rotatably sleeved inside the inner barrel shaft 10;

[0100] Water seal 16 is fitted onto the outer peripheral wall of the inner barrel shaft 10;

[0101] Inner tub shaft gasket 17, the inner tub shaft gasket 17 is fitted on the outer peripheral wall of the inner tub shaft 10, and the inner tub shaft gasket 17 is set higher than the water seal 16;

[0102] The inner barrel shaft gasket 17 has a downwardly extending lower lip 1701, and the water seal 16 has an upper lip. The edge of the lower lip 1701 of the inner barrel shaft gasket 17 extends into the air chamber 1603 inside the upper lip of the water seal 16.

[0103] The existing washing machine's reduction clutch uses an inner tub shaft gasket 17 to seal the connection between the inner tub and the inner tub shaft 10. The water seal 16 prevents water in the outer tub from leaking along the high-speed rotating inner tub shaft 10. However, the inner tub shaft gasket 17 and the water seal 16 do not mesh properly. This can cause water leaking from the inner tub shaft gasket 17 to flow down the inner tub shaft 10, and potentially further leak along the gap between the water seal 16 and the inner tub shaft 10.

[0104] In this embodiment, a novel washing machine deceleration clutch is provided. The lower lip 1701 of the inner tub shaft gasket 17 extends to the inner air chamber of the upper lip of the water seal 16. In this way, when water leaks from the inner tub shaft gasket 17, it will directly enter the inner air chamber 1603 of the upper lip of the water seal 16, further preventing water from leaking from the inner tub shaft gasket 17 to the inner tub shaft 10. This effectively blocks water from seeping out of the water seal 16 and significantly prevents water leakage.

[0105] The water seal 16 described in this embodiment has an integrally formed sealing inner ring 1602 and sealing outer ring 1601. The sealing inner ring 1602 is fitted onto the outer peripheral wall of the inner barrel shaft 10, and an internal air chamber 1603 with an upper opening is formed between the sealing inner ring 1602 and the sealing outer ring 1601. The lower lip 1701 edge of the inner barrel shaft gasket 17 extends into the upper opening of the internal air chamber 1603.

[0106] Specifically, in this embodiment, the upper edge of the sealing inner ring 1602 is set higher than the lower lip 1701 edge of the inner barrel shaft gasket 17. In this way, when water leaks at the inner barrel shaft gasket 17, it directly enters the internal air chamber 1603 due to the blockage of the inner sealing inner ring 1602, and cannot flow to the inner barrel shaft 10 for further leakage along the inner barrel shaft.

[0107] As an optional implementation of this embodiment, a first spring ring 20 is fitted onto the outer wall of the upper port of the sealing inner ring 1602, and a second spring ring 21 is fitted onto the outer wall of the lower port of the sealing inner ring 1602. The water seal 16 in this embodiment adopts a double-sealing spring ring design at both the upper and lower ends, resulting in a better sealing effect.

[0108] This embodiment of a novel washing machine deceleration clutch includes an inner tub flange 18, which is mounted on an inner tub shaft 10. An inner tub shaft gasket 17 is fitted onto the outer peripheral wall of the inner tub shaft 10, and the inner tub shaft gasket 17 is in at least partial sealing contact with the bottom wall and the outer peripheral side wall of the inner tub flange 18.

[0109] This embodiment of a novel washing machine deceleration clutch has multiple sealing ribs extending inward within the sealing inner ring 1602, further enhancing the sealing effect between the sealing inner ring 1602 and the inner tub shaft 10.

[0110] This embodiment discloses a novel washing machine reduction clutch, comprising a reducer housing with an upper mounting port through which the impeller shaft 11 and inner tub shaft 10 protrude. An upper rolling bearing 24 is mounted within the upper mounting port, and the inner ring of the upper rolling bearing 24 is fitted onto the outer circumference of the inner tub shaft 10. A water seal 16 has a lower lip 1604, and the edge of the upper mounting port is inserted into the lower lip 1604 to maintain a sealed connection. This achieves a seal between the water seal 16 and the upper mounting port of the reducer housing.

[0111] The reducer housing described in this embodiment includes an upper housing 9 and a lower housing 14. The upper housing 9 and the lower housing 14 are fixedly connected to form an installation chamber, and the upper installation port is provided on the upper housing 9.

[0112] This embodiment of a novel washing machine deceleration clutch includes a deceleration mechanism 22, an input shaft 1, and an input shaft sleeve 4. The deceleration mechanism 22 is disposed in the mounting chamber. The input shaft 1 is rotatably fitted inside the input shaft sleeve 4. The input shaft 1 and the input shaft sleeve 4 are connected to the input end of the deceleration mechanism 22. The impeller shaft 11 and the inner tub shaft 10 are connected to the output end of the deceleration mechanism 22. The lower housing 14 has a lower mounting port through which the input shaft 1 and the input shaft sleeve 4 protrude. A lower rolling bearing 23 is installed in the lower mounting port, and the inner ring of the lower rolling bearing 23 is fitted onto the outer periphery of the input shaft sleeve 4.

[0113] This embodiment also provides a washing machine with the novel washing machine reduction clutch, including:

[0114] Inner tub;

[0115] The impeller is located inside the inner drum;

[0116] The impeller shaft 11 extends into the inner tub and is fixedly connected to the impeller, and the inner tub shaft 10 is fixedly connected to the bottom of the inner tub.

[0117] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A novel washing machine reduction clutch, characterized in that, include: Input axis; An input shaft sleeve, wherein the input shaft is rotatably fitted inside the input shaft sleeve; A speed reduction mechanism, wherein the first ends of the input shaft and the input shaft sleeve are respectively connected to the speed reduction mechanism; A torque transmission sleeve is fixedly mounted on the second end of the input shaft; A clutch mechanism includes a clutch sleeve, a shift fork, a shift fork torsion spring, and a shift fork positioning plate. The shift fork positioning plate is fixedly sleeved on the outer periphery of the first end of the input shaft sleeve. The clutch sleeve is slidably fitted onto the input shaft sleeve, and the clutch sleeve and the input shaft sleeve are circumferentially limited. The middle part of the shift fork is rotatably mounted on the shift fork positioning plate via a shift fork pivot. The shift fork torsion spring is fitted onto the shift fork pivot, and both ends of the shift fork torsion spring abut against the shift fork and the shift fork positioning plate, respectively. One end of the shift fork is inserted into the clutch sleeve. The shift fork has a shift fork positioning part, and the shift fork positioning plate has a positioning plate positioning part. During washing, the torsion spring of the shift fork drives one end of the shift fork to slide upward and separate from the torque transmission shaft sleeve, and the shift fork positioning part abuts and cooperates with the positioning disk positioning part; During dehydration, the other end of the drive fork is driven to rotate relative to the fork positioning plate. One end of the fork moves downward to disengage from the clutch sleeve, and the clutch sleeve slides down to engage with the torque transmission shaft sleeve.

2. The novel washing machine reduction clutch according to claim 1, characterized in that, One end of the shift fork has a fork joint, which forks into the outer periphery of the clutch sleeve. The shift fork positioning part is located on the side wall of the shift fork facing the shift fork positioning disc, and the shift fork positioning part is close to one end of the fork joint.

3. A novel washing machine reduction clutch according to claim 2, characterized in that, The shift fork positioning part is a first positioning protrusion protruding from the side wall of the shift fork, and the first positioning protrusion has a first positioning plane.

4. A novel washing machine reduction clutch according to claim 3, characterized in that, The shift fork positioning plate includes an annular plate body and a shift fork mounting base located on one side of the annular plate body. The middle part of the shift fork is rotatably mounted on the shift fork mounting base via a shift fork pivot. The positioning part of the positioning plate is located on the annular plate body and within the shift fork mounting base.

5. A novel washing machine reduction clutch according to claim 4, characterized in that, The positioning part of the positioning disk is a second positioning protrusion protruding from the annular disk body, and the second positioning protrusion has a second positioning plane; During washing, the second positioning plane abuts against the first positioning plane to position the shift fork to move the clutch sleeve.

6. A novel washing machine reduction clutch according to claim 1, characterized in that, The device includes a reducer housing and a drive arm. The shift fork positioning plate is fixedly installed on the bottom wall of the reducer housing. The drive arm is installed on the outer peripheral wall of the reducer housing via a drive arm pivot. The drive arm can be driven to rotate along the outer peripheral surface of the reducer housing. The drive arm has a drive end, and the other end of the shift fork is located on the outer periphery of the reducer housing and corresponds to the drive end; During washing, the drive arm is in its natural state, with the drive end and the other end of the shift fork spaced apart. During spin-drying, the drive arm is driven to rotate, and the drive end moves the other end of the shift fork, causing the shift fork to rotate relative to the shift fork positioning plate.

7. A novel washing machine reduction clutch according to claim 6, characterized in that, The drive arm has a limiting end, which is located on both sides of the drive arm. A drive arm torsion spring is mounted on the drive arm shaft, and the two ends of the drive arm torsion spring abut against the reducer housing and the drive arm, respectively. During the dehydration process, the drive arm is driven to rotate, the drive arm torsion spring is twisted and deformed, and the limiting end has a gap with the outer peripheral wall of the reducer housing. During the washing process, the drive arm is released, the drive arm torsion spring returns to its original deformation, and the drive arm is driven to reverse and reset, and the limiting end abuts against the outer peripheral wall of the reducer housing.

8. A novel washing machine reduction clutch according to claim 7, characterized in that, The limiting end has an arc-shaped limiting end face that matches the outer peripheral wall surface of the reducer housing.

9. A novel washing machine reduction clutch according to claim 1, characterized in that, The clutch sleeve has an internal spline, and the input shaft sleeve has a matching external spline on its outer peripheral wall. The clutch sleeve and the input shaft sleeve are connected in a circumferential limiting manner by the internal spline and the external spline assembly.

10. A novel washing machine reduction clutch according to claim 1, characterized in that, A rubber sleeve is fitted on the torque transmission bushing to buffer the engagement between the clutch sleeve and the torque transmission bushing.

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