Deceleration clutch of washing equipment and washing equipment

Abstract

The speed reduction clutch comprises a speed reducer, a brake structure with a brake arm and a lower shell arranged on the outer side of the speed reducer in a sleeving mode, the speed reduction clutch is further provided with a damper with the telescopic length, one end of the damper is rotationally connected with the brake arm, and the other end of the damper is rotationally connected with the lower shell. In the braking process, the damper extends to generate damping force on the brake arm. According to the deceleration clutch, the damper is arranged on the brake arm of the deceleration clutch, so that the time of tensioning the brake band by the brake arm in the braking process can be prolonged, the brake band can tightly hold the outer gear ring of the speed reducer slowly, and therefore abnormal noise in the braking process is reduced; in addition, the braking structure with large braking torque can be used on the small-capacity washing equipment, the application range of the braking structure is expanded, the service life of the speed reduction clutch is prolonged, inertial impact generated in the braking process is reduced, and noise is lowered.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing equipment, and in particular relates to a deceleration clutch for washing equipment and the washing equipment. Background Art

[0002] In the prior art, a deceleration clutch of a washing machine is generally installed below the washing machine to disconnect or connect the driving part of the drum in the washing machine, or to change the consistency of the rotation directions of the impeller and the drum of the washing machine.

[0003] Typically, a reduction clutch uses a clutch structure to change the meshing relationship of the input shaft, thereby transmitting power along different paths within the reducer, achieving the switching of the output shaft's rotational direction or adjusting the speed. However, existing reduction clutches, due to their internal planetary gear structure, typically have a common outer ring gear. Adjusting the transmission path requires both changing the input shaft and correspondingly controlling the outer ring gear to rotate or remain stationary.

[0004] The brake structure of the deceleration clutch usually uses a spring to press the brake arm against the outer ring gear. When switching to the washing mode, the pulling device resists the deformation force of the spring to pull the brake arm, thereby releasing the outer ring gear.

[0005] However, when the brake arm rotates back to the initial position of tightening the brake belt, the brake arm will rotate rapidly due to the continuous compression of the spring and drive the brake belt to instantly hold the outer ring gear of the reducer, causing loud noise and even a large impact force on the brake arm, which can easily cause fatigue damage to the brake arm.

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

[0007] The object of the present invention is to provide a deceleration clutch for a washing device, so as to achieve the purpose of slowing down the process of braking a brake belt and braking a reducer, and reducing or eliminating the noise generated by braking.

[0008] Another object of the present invention is to provide a washing device using the above-mentioned deceleration clutch, so as to achieve the purpose of using a brake structure with a larger braking torque on a washing device with a small capacity, thereby expanding the scope of application of the brake structure.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0010] A deceleration clutch for washing equipment includes a reducer, a brake structure with a brake arm, and a lower shell mounted on the outside of the reducer. A damper with retractable length is also provided, one end of the damper is rotatably connected to the brake arm, and the other end is rotatably connected to the lower shell. During braking, the damper extends to generate a damping force on the brake arm.

[0011] Furthermore, the damper is configured as a straight rod structure, the brake arm is rotatably arranged on the outside of the lower shell, a brake belt connected to one end of the brake arm is provided around the outer periphery of the reducer, and the other end of the brake arm is rotatably connected to the damper.

[0012] Furthermore, the damper is provided with a sleeve and a telescopic rod, the sleeve having a cavity extending along its axial direction, the telescopic rod being movably embedded in the cavity of the sleeve and having one end cantilevered outside the sleeve and movably connected to the brake arm;

[0013] A sealing ring capable of one-way ventilation is provided in the circumferential gap between the telescopic rod and the cavity. When the telescopic rod moves out of the cavity, the external air is blocked by the sealing ring, so that a pressure greater than atmospheric pressure is generated in the cavity. When the telescopic rod moves into the cavity, the internal air can pass through the sealing ring so that the pressure in the cavity is equal to atmospheric pressure, thereby forming a one-way resistance to the telescopic rod (72).

[0014] Furthermore, a clutch structure is provided, one end of which is sleeved with the input shaft of the reducer and the other end of which extends toward the brake arm;

[0015] A fork positioning block is provided between the shift fork of the clutch structure and the brake arm, with one end abutting the shift fork and the other end abutting the brake arm. The shift fork positioning block is pressed by the brake arm and can move synchronously with the brake arm and push the shift fork.

[0016] Furthermore, a lower shell having a reducer cover is sleeved on the outer side of the reducer, the reducer cover protrudes toward one side of the lower shell and forms a cavity on the other side;

[0017] The brake structure is provided with a fixing rod located outside the reducer cover and parallel to the axis direction of the reducer cover. The brake arm and the shift fork positioning block are perpendicular to the fixing rod and are rotatably connected in series to the fixing rod.

[0018] Furthermore, the shift fork positioning block is configured as a flat plate with a through hole on its surface, and a first leg and a second leg are provided on the side of the flat plate, extending radially outward along the through hole, and the angle between the first leg and the second leg is an obtuse angle;

[0019] The shift fork positioning block is sleeved on the fixing rod with a through hole. The shift fork positioning block rotates around the fixing rod to enable the first support leg to move circumferentially and abut against the brake arm, and the second support leg to move circumferentially and abut against the shift fork.

[0020] Furthermore, a side of the first leg for abutting the brake arm and a side of the second leg for abutting the shift fork are provided with a bent plate perpendicular to the plate surface of the shift fork positioning block.

[0021] Furthermore, the shift fork positioning block is bent and extended at a side opposite to the second leg to form a mounting groove, the extension direction of the second leg is perpendicular to the bottom of the mounting groove, the through hole is located between the bottom of the groove and the second leg, and a through hole concentric with the through hole is provided on a side of the mounting groove parallel to the shift fork positioning block;

[0022] Preferably, a torsion spring is embedded in the mounting groove and is concentrically arranged with the through hole.

[0023] Furthermore, the shift fork positioning block is provided with a limiting support leg on the side opposite to the first support leg, which can abut against the reducer cover, so as to limit the amplitude of the shift fork positioning block pushing the shift fork.

[0024] The present invention further provides a washing device which adopts any of the above-mentioned speed reduction clutches.

[0025] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0026] 1. By arranging a damper on the brake arm of the deceleration clutch, the time for the brake arm to tighten the brake belt can be extended during the braking process, so that the brake belt can gently hold the outer ring gear of the reducer, thereby reducing abnormal noise during the braking process. It can also enable a brake structure with a large braking torque to be used on small-capacity washing equipment, expanding the application range of the brake structure, extending the service life of the deceleration clutch, reducing the inertial impact generated during the braking process, and reducing noise.

[0027] 2. The shift fork positioning block and the brake arm are independently connected in series on the same rotating shaft, so that the force of the brake arm on the shift fork positioning block can be transmitted through torque, thereby improving the overlap between the shift fork positioning block and the brake arm during the rotation process, avoiding the problem of mutual jamming between the shift fork positioning block and the brake arm due to installation misalignment, and improving the smoothness of the deceleration clutch operation.

[0028] 3. By arranging bending plates on the first and second legs, the contact areas between the first leg and the brake arm, and between the second leg and the shift fork are increased, so that the shift fork positioning block can more stably transmit the driving force between the brake arm and the shift fork.

[0029] 4. By setting the fork positioning block, the brake structure and the clutch structure can be linked, and direct contact between the brake arm and the fork can be avoided. Therefore, by optimizing the structure of the fork positioning block, the movement amplitude of the brake arm and the fork can be accurately adjusted to match, and the brake structure and the clutch structure can be made more synchronized and coordinated, avoiding the collision between the brake structure and the clutch structure to generate additional stress and fatigue damage.

[0030] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0032] Figure 1 It is an axonometric schematic diagram of a deceleration clutch of a washing device of the present invention;

[0033] Figure 2 is an axonometric schematic diagram of a deceleration clutch of another washing device of the present invention;

[0034] Figure 3 This is a schematic front view of a deceleration clutch of a washing device of the present invention.

[0035] Figure 4 It is an axonometric schematic diagram of a shift fork positioning block installed on a deceleration clutch in the present invention.

[0036] Among them: 10, upper shell; 20, lower shell; 21, reducer cover; 30, reducer; 31, input shaft; 32, output shaft; 40, brake structure; 41, brake arm; 42, fixed rod; 43, brake band; 50, clutch structure; 51, shift fork; 52, fixed plate; 53, clutch gear sleeve; 60, shift fork positioning block; 61, through hole; 62, first support leg; 63, second support leg; 64, limit support leg; 65, bending plate; 66, mounting groove; 67, groove bottom; 68, torsion spring; 70, damper; 71, sleeve; 72, telescopic rod.

[0037] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "in contact," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] In the present invention, "washing equipment" refers to a general term for a type of household appliances that can perform washing, dehydration, drying and other procedures, such as washing machines, washer-dryers, etc.

[0042] like Figure 1 、 Figure 2 and Figure 3 As shown, in an embodiment of the present invention, a deceleration clutch equipped with a damper 70 is introduced.

[0043] The deceleration clutch of the washing machine includes an upper shell 10 , a lower shell 20 , a reducer 30 , a clutch structure 50 and a brake structure 40 .

[0044] The lower housing 20 is provided with a reducer cover 21. The reducer cover 21 protrudes from one side of the lower housing 20 and forms a cavity on the other side. Preferably, the reducer cover 21 is cylindrical. The cavity is a cylindrical chamber. The cylindrical chamber is open on the side of the lower housing 20. The upper housing 10 covers the open end of the cylindrical chamber and is connected to the lower housing 20 sideways.

[0045] The reducer 30 is rotatably mounted within the cylindrical chamber. Its input shaft 31 is rotatably connected to the lower housing 20. Its output shaft 32 is rotatably connected to the upper housing 10. The outer ring gear of the reducer 30 is embedded within the cylindrical chamber. A gap is formed between the outer circumference of the outer ring gear and the inner circumference of the cylindrical chamber.

[0046] In addition, a spline wheel is provided at the end of the input shaft 31 that is exposed from the cylindrical cavity. The clutch structure 50 is fixed to the lower housing 20. The clutch structure 50 includes a fixed plate 52, a shift fork 51, and a clutch gear sleeve 53 that is sleeved on the input shaft 31 and can slide along the axial direction of the input shaft 31.

[0047] The fixing plate 52 is a circular flat plate that is fixed to the end surface of the lower housing 20. The edge of the fixing plate 52 is provided with a hinge portion that radially protrudes from the outer periphery of the fixing plate 52.

[0048] The middle portion of the shift fork 51 is rotatably disposed on the hinge portion. One end of the shift fork 51 is movably connected to the clutch gear sleeve 53, and the other end extends from the hinge portion and bends upward to form a lever structure.

[0049] In this way, when the shift fork 51 swings back and forth relative to the hinge part, it can drive the clutch sleeve 53 to engage with the spline wheel, or disengage the clutch sleeve 53 from the spline wheel, thereby switching the meshing relationship of the input shaft 31 and changing the power transmission path in the deceleration clutch.

[0050] Specifically, the deceleration clutch comprises an upper housing 10 and a lower housing 20 that are engaged with each other. The reducer 30 is embedded in the upper housing 10 and the lower housing 20. The input shaft 31 and the output shaft 32 of the reducer 30 pass through the upper housing 10 and the lower housing 20 respectively.

[0051] A brake structure 40 is also located outside the lower housing 20, which brakes the reducer 30. The brake structure 40 includes a brake arm 41, a brake band 43, and a fixing rod 42. The brake arm 41 and fixing rod 42 are located outside the reducer housing 21. The brake band 43 wraps around the outer circumference of the outer ring gear. One end of the brake band 43 is fixed to the sidewall of the reducer housing 21, while the other end extends through the sidewall and connects to the brake arm 41.

[0052] When the brake arm 41 rotates counterclockwise around the fixed rod 42, the diameter of the circle enclosed by the brake band 43 decreases, thereby holding the outer ring gear tightly and fixing it. When the brake arm 41 rotates clockwise around the fixed rod 42, the diameter of the circle enclosed by the brake band 43 increases, thereby loosening the outer ring gear and allowing it to rotate.

[0053] One end of the brake arm 41 is rotatably sleeved on the fixed rod 42 of the brake structure 40 , and the other end is provided with a damper 70 for limiting the clockwise or counterclockwise rotation speed of the brake arm 41 .

[0054] Furthermore, the damper 70 is configured as a straight rod structure with a retractable length, one end of which is movably connected to the brake arm 41 and the other end of which is rotatably fixed to the lower housing 20 .

[0055] The damper 70 comprises a sleeve 71 and a telescopic rod 72. The telescopic rod 72 is arranged to coincide with the central axis of the sleeve 71. One end of the telescopic rod 72 is embedded in the sleeve 71 and can move along the sleeve 71's axis, while the other end cantilevers out of the sleeve 71 and is movably connected to the brake arm 41. When the telescopic rod 72 is extended from the sleeve 71, a sealed cavity is formed within the sleeve 71. Furthermore, a one-way ventilated sealing ring is provided in the gap between the sleeve 71 and the telescopic rod 72, providing one-way resistance to the telescopic rod 72.

[0056] Specifically, the sleeve 71 has a cavity extending along its axial direction. The telescopic rod 72 is movably embedded in the cavity of the sleeve 71 and one end of the telescopic rod 72 is cantilevered outside the sleeve 71 and movably connected to the brake arm 41 .

[0057] A one-way ventilated sealing ring is provided in the circumferential gap between the telescopic rod 72 and the cavity. When the telescopic rod 72 moves out of the cavity, the external air is blocked by the sealing ring, causing a pressure greater than atmospheric pressure to be generated in the cavity. When the telescopic rod 72 moves into the cavity, the internal air can pass through the sealing ring to make the pressure in the cavity equal to atmospheric pressure, thereby forming a one-way resistance to the telescopic rod 72.

[0058] For example, the telescopic rod 72 experiences resistance when extending from the sleeve 71, but experiences no resistance when retracting into the sleeve 71. Furthermore, when the telescopic rod 72 is extended from the sleeve 71 and reaches its maximum length, the brake mechanism 40 engages the outer gear ring. When the telescopic rod 72 is retracted into the sleeve 71 and reaches its minimum length, the brake mechanism 40 releases the outer gear ring.

[0059] like Figure 1 As shown, when the brake arm 41 of the brake mechanism 40 is pulled by the pulling mechanism, the brake arm 41 rotates clockwise, and the telescopic rod 72 of the damper 70 retracts into the sleeve 71. The damper 70 does not exert any retarding force on the brake arm 41. However, when the pulling mechanism releases the brake arm 41, the brake arm 41 rotates counterclockwise under the restoring force of the elastic member. At this point, the telescopic rod 72 of the damper 70 extends out of the sleeve 71, and the damper 70 exerts a retarding force on the brake arm 41.

[0060] In this way, the process of the brake belt 43 hugging the outer gear ring of the reducer 30 is relatively slow, and no large inertial impact is generated, which greatly reduces the noise during the braking process, and can also make the washing tub stop rotating smoothly to avoid the washing tub hitting the washing equipment box due to stopping too quickly.

[0061] In this embodiment, a damper 70 is installed in the deceleration clutch, which enables the brake belt 43 to be pulled by the brake arm 41 to gently clamp the outer ring gear when braking, thereby reducing abnormal noise during the braking process. It also allows the brake structure 40 with a large braking torque to be used on small-capacity washing equipment, expanding the scope of application of the brake structure 40 and extending the service life of the deceleration clutch.

[0062] like Figure 1 、 Figure 3 and Figure 4 As shown, in an embodiment of the present invention, a shift fork positioning block 60 installed in a deceleration clutch is introduced.

[0063] To enable the brake mechanism 40 and clutch mechanism 50 to operate in tandem, a shift fork positioning block 60 is positioned between the two structures. Specifically, one end of the shift fork positioning block 60 abuts the brake arm 41, and the other end abuts the shift fork 51. When the brake arm 41 rotates clockwise, the shift fork positioning block 60, pressed against by the brake arm 41, moves synchronously with it. Simultaneously, the shift fork positioning block 60 also drives the shift fork 51 to swing about its hinged joint.

[0064] In this embodiment, by providing the fork positioning block 60, the brake structure 40 and the clutch structure 50 can be linked together, and direct contact between the brake arm 41 and the fork 51 can be avoided. Therefore, by improving the structure of the fork positioning block 60, the movement amplitude matching of the brake arm 41 and the fork 51 can be accurately adjusted and controlled, thereby reducing the impact of the braking process.

[0065] like Figure 1 、 Figure 3 and Figure 4 As shown, in an embodiment of the present invention, a shift fork positioning block 60 installed in a deceleration clutch is introduced.

[0066] Specifically, a reducer cover 21 is provided in the lower housing 20. The reducer cover 21 protrudes from one side of the lower housing 20 and forms a cavity on the other side. Preferably, the reducer cover 21 is cylindrical. The cavity is a cylindrical chamber.

[0067] The lower housing 20 is equipped with a brake structure 40 that brakes the reducer 30. The brake structure 40 includes a brake arm 41, a brake band 43, and a fixing rod 42. Both the brake arm 41 and the fixing rod 42 are positioned outside the reducer housing 21. The fixing rod 42 is positioned parallel to the central axis of the reducer housing 21. The brake arm 41 is rotatably connected to the fixing rod 42.

[0068] In particular, the shift fork positioning block 60 is rotatably connected in series to the fixed rod 42. In addition, the shift fork positioning block 60 and the brake arm 41 are sequentially arranged along the axial direction of the fixed rod 42.

[0069] In this embodiment, the fork positioning block 60 and the brake arm 41 are independently connected in series on the same rotating shaft, so that the force exerted by the brake arm 41 on the fork positioning block 60 can be transmitted through torque, thereby improving the overlap between the fork positioning block 60 and the brake arm 41 during the rotation process, avoiding the problem of mutual jamming between the fork positioning block 60 and the brake arm 41 due to misaligned installation, and improving the smoothness of the operation of the deceleration clutch.

[0070] like Figure 4 As shown, in an embodiment of the present invention, a shift fork positioning block 60 installed in a deceleration clutch is introduced.

[0071] The shift fork positioning block 60 is a flat plate with a through hole 61 on its surface. A first leg 62 and a second leg 63 extending radially outward along the through hole 61 are provided on the side of the flat plate. The angle between the first leg 62 and the second leg 63 is an obtuse angle.

[0072] The shift fork positioning block 60 is sleeved on the fixing rod 42 with a through hole 61 . The shift fork positioning block 60 rotates around the fixing rod 42 to enable the first leg 62 to move circumferentially to abut against the brake arm 41 and the second leg 63 to move circumferentially to abut against the shift fork 51 .

[0073] In this embodiment, the angle between the first leg 62 and the second leg 63 is set to an obtuse angle, which can ensure that when the fork positioning block 60 rotates, the first leg 62 does not block the swing of the fork 51, making the brake structure 40 and the clutch structure 50 smoother during the linkage process.

[0074] like Figure 2 and Figure 4 As shown, in an embodiment of the present invention, a shift fork positioning block 60 installed in a deceleration clutch is introduced.

[0075] The first leg 62 for contacting the side of the brake arm 41 and the second leg 63 for contacting the side of the shift fork 51 are provided with a bent plate 65 perpendicular to the plate surface of the shift fork positioning block 60 .

[0076] In this embodiment, by providing a bending plate 65 on the first leg 62 and the second leg 63, the contact area between the first leg 62 and the brake arm 41, and between the second leg 63 and the shift fork 51 is increased, so that the shift fork positioning block 60 can more stably transmit the driving force between the brake arm 41 and the shift fork 51.

[0077] like Figure 2 and Figure 4 As shown, in an embodiment of the present invention, a shift fork positioning block 60 installed in a deceleration clutch is introduced.

[0078] The fork positioning block 60 is bent and extended at the side opposite to the second leg 63 to form a mounting groove 66. The extension direction of the second leg 63 is perpendicular to the groove bottom 67 of the mounting groove 66. The through hole 61 is located between the groove bottom 67 and the second leg 63. A through hole concentric with the through hole 61 is provided on the side of the mounting groove 66 parallel to the fork positioning block 60.

[0079] Preferably, a torsion spring 68 is embedded in the mounting groove 66 and is concentrically arranged with the through hole 61 .

[0080] In this embodiment, by adding a mounting groove 66 to the fork positioning block 60, a spring can be embedded in the fork positioning block 60, so that the fork positioning block 60 can apply a counterclockwise torque to the brake arm 41, thereby increasing the pulling force of the brake arm 41 on the brake band 43 and ensuring that the brake structure 40 can better lock the outer gear ring.

[0081] like Figure 2 and Figure 4 As shown, in an embodiment of the present invention, a shift fork positioning block 60 installed in a deceleration clutch is introduced.

[0082] The shift fork positioning block 60 is provided with a limiting support leg 64 on the side opposite to the first support leg 62 , which can abut against the reducer cover 21 , so as to limit the amplitude of the shift fork positioning block 60 pushing the shift fork 51 .

[0083] In this embodiment, by providing a limit leg 64 on the fork positioning block 60, the swing amplitude of the fork 51 can be reduced, thereby preventing the fork positioning block 60 from always pressing the fork 51 when the movement amplitude of the brake arm 41 is greater than the movement amplitude of the fork 51, reducing the time when the fork 51 is subjected to force, and eliminating the problem of fatigue stress easily generated on the fork 51.

[0084] The present invention further provides a washing device, which adopts the deceleration clutch in any of the above embodiments.

[0085] The washing machine includes a washing tub, a motor, and a pulsator. A deceleration clutch is mounted on the lower side of the bottom wall of the washing tub. The pulsator is mounted on the upper side of the bottom wall of the washing tub. The output shaft 32 of the deceleration clutch passes through the bottom wall of the washing tub and is sleeved with the pulsator.

[0086] The input shaft 31 of the speed reduction clutch is in driving connection with the output end of the motor. For example, a large pulley is sleeved on the input shaft 31. The output end of the motor is sleeved on a small pulley. The large pulley and the small pulley are arranged on the same plane and are driven by a belt.

[0087] The reduction clutch includes an upper housing 10, a lower housing 20, a reducer 30, a clutch structure 50, and a brake structure 40. A reducer cover 21 is provided within the lower housing 20. The reducer cover 21 protrudes from one side of the lower housing 20 and forms a cavity on the other side. The reducer cover 21 is cylindrical in shape. The cavity forms a cylindrical chamber. The cylindrical chamber is open on the side of the lower housing 20.

[0088] The upper shell 10 covers the open end of the cylindrical chamber and is connected to the lower shell 20 by side contact. In addition, the upper shell 10 is connected to the bottom wall of the washing tub.

[0089] The deceleration clutch typically utilizes a brake mechanism 40 that includes a brake band 43. In this brake mechanism 40, one end of the brake band 43 is fixed, while the other end is connected to a rotatable brake arm 41. During normal operation, the brake band 43 wraps around the outer circumference of the outer gear ring of the reducer 30 at intervals. To brake, a lever is rotated to retract the brake band 43 until it fits against the outer gear ring, securing it.

[0090] In this embodiment, by providing a deceleration clutch with a shift fork positioning block 60 in the washing equipment, the noise of the washing equipment during operation is reduced, the types of spare parts in the washing equipment are greatly reduced, and the convenience of maintenance work of the washing equipment is improved.

[0091] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A deceleration clutch for a washing machine, comprising a reducer (30), a brake structure (40) having a brake arm (41), and a lower housing (20) sleeved on the outside of the reducer (30), characterized in that: A retractable damper (70) is also provided. One end of the damper (70) is rotatably connected to the brake arm (41), and the other end is rotatably connected to the lower housing (20). During braking, the damper (70) extends to generate a damping force on the brake arm (41).

2. A deceleration clutch for washing equipment according to claim 1, characterized in that: The damper (70) is configured as a straight rod structure, the brake arm (41) is rotatably arranged on the outside of the lower shell (20), a brake band (43) connected to one end of the brake arm (41) is provided around the outer periphery of the reducer (30), and the other end of the brake arm (41) is rotatably connected to the damper (70).

3. The deceleration clutch of a washing machine according to claim 2, characterized in that: The damper (70) is provided with a sleeve (71) and a telescopic rod (72), the sleeve (71) having a cavity extending along its axial direction, the telescopic rod (72) being movably embedded in the cavity of the sleeve (71) and having one end cantilevered outside the sleeve (71) and movably connected to the brake arm (41); A sealing ring capable of one-way ventilation is provided in the circumferential gap between the telescopic rod (72) and the cavity. When the telescopic rod (72) moves out of the cavity, the external air is blocked by the sealing ring, so that a pressure greater than atmospheric pressure is generated in the cavity. When the telescopic rod (72) moves into the cavity, the internal air can pass through the sealing ring so that the pressure in the cavity is equal to atmospheric pressure, thereby forming a one-way resistance to the telescopic rod (72).

4. A deceleration clutch for washing equipment according to any one of claims 1 to 3, characterized in that: A clutch structure (50) is also provided, one end of which is sleeved with the input shaft (31) of the reducer (30) and the other end of which extends toward the brake arm (41); A shift fork positioning block (60) is provided between the shift fork (51) of the clutch structure (50) and the brake arm (41), with one end abutting against the shift fork (51) and the other end abutting against the brake arm (41). The shift fork positioning block (60) is pressed by the brake arm (41) and can move synchronously with the brake arm (41) and push the shift fork (51).

5. The deceleration clutch for washing equipment according to claim 4, characterized in that: A lower shell (20) having a reducer cover (21) is sleeved on the outer side of the reducer (30), and the reducer cover (21) protrudes toward one side of the lower shell (20) and forms a cavity on the other side; The brake structure (40) is provided with a fixing rod (42) located outside the reducer cover (21) and parallel to the axial direction of the reducer cover (21); the brake arm (41) and the shift fork positioning block (60) are perpendicular to the fixing rod (42) and are rotatably connected in series to the fixing rod (42).

6. The deceleration clutch for washing equipment according to claim 5, characterized in that: The shift fork positioning block (60) is configured as a flat plate having a through hole (61) on its surface, and a first leg (62) and a second leg (63) extending radially outward along the through hole (61) are provided on the side of the flat plate, wherein the angle between the first leg (62) and the second leg (63) is an obtuse angle; The shift fork positioning block (60) is sleeved on the fixed rod (42) through a through hole (61). The shift fork positioning block (60) rotates around the fixed rod (42) to enable the first leg (62) to move along the circumference to abut against the brake arm (41), and the second leg (63) to move along the circumference to abut against the shift fork (51).

7. The deceleration clutch for washing equipment according to claim 6, characterized in that: The first leg (62) for contacting the side of the brake arm (41) and the second leg (63) for contacting the side of the shift fork (51) are provided with a bent plate (65) perpendicular to the plate surface of the shift fork positioning block (60).

8. A deceleration clutch for washing equipment according to claim 6 or 7, characterized in that: The shift fork positioning block (60) is bent and extended at a side opposite to the second leg (63) to form a mounting groove (66); the extension direction of the second leg (63) is perpendicular to the groove bottom (67) of the mounting groove (66); the through hole (61) is located between the groove bottom (67) and the second leg (63); and a through hole concentric with the through hole (61) is provided on a side of the mounting groove (66) parallel to the shift fork positioning block (60); Preferably, a torsion spring (68) is embedded in the mounting groove (66) and is arranged concentrically with the through hole (61).

9. The deceleration clutch for washing equipment according to claim 8, characterized in that: The shift fork positioning block (60) is provided with a limiting support leg (64) on the side opposite to the first support leg (62) and capable of abutting against the reducer cover (21), for limiting the amplitude of the shift fork positioning block (60) pushing the shift fork (51).

10. A washing device, characterized in that: A deceleration clutch according to any one of claims 1 to 9 is used.

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