CN105734907A - Washing machine and deceleration clutch for same - Google Patents

Abstract

The invention relates to a deceleration clutch for a washing machine, which comprises a casing, a brake wheel inside the casing, a wheel train inside the brake wheel, a clutch shaft sleeve capable of sliding up and down and a shift fork for driving the clutch shaft sleeve, and the casing A brake band is set between the brake wheel and the brake wheel, and the brake band is set around the brake wheel. One end is fixed on the housing, and the other end extends out of the housing to connect with a brake arm. The brake arm is arranged on a central axis. The central shaft is fixedly installed on the shell, and the central shaft is located at the lower part of the brake arm. There is also a connecting arm, the braking arm drives the connecting arm to move, the connecting arm drives the braking band and the shift fork to move, and drives the clutch bushing to slide up and down with the The connection between the torque shaft sleeve and the fixed shaft sleeve realizes dehydration and washing.

Description

Reduction clutch for washing machine and washing machine

technical field

The invention relates to the field of washing machines, in particular to a deceleration clutch for washing machines and a washing machine.

Background technique

At present, the function of the deceleration clutch of the pulsator type washing machine is generally to drive the pulsator to reciprocate after decelerating the bidirectional rotation of the motor. The conventional deceleration clutch is mainly composed of an input shaft, an output shaft, an output shaft sleeve, an input shaft sleeve, a brake wheel, a reduction mechanism installed inside the brake wheel, and a clutch component installed on the input shaft sleeve. In washing conditions, the output shaft is required to rotate repeatedly at low speed in both directions. The output shaft sleeve and the brake wheel are integrated. The deceleration mechanism generally only plays a simple deceleration role. When the brake wheel is braked, the output shaft sleeve is also restrained. The two-way rotation of the driving motor can only drive the corresponding two-way rotation of the output shaft.

In the existing rubbing deceleration clutch, its internal deceleration mechanism has not changed, only the clutch control mechanism has been changed, from the conventional single ratchet and single pawl to double ratchet and double pawl. The wheel is initially loosened (only fully loosened when dehydrating), the drive motor rotates in both directions, and the output shaft is driven to rotate in both directions. Corresponding rotation in the opposite direction has a very small rotation angle, and the rotational speed and swing amplitude of the output shaft sleeve change at any time due to changes in the resistance of the clothing, which is unstable. Although the phenomenon of rubbing against each other is formed, the ideal washing effect has not been achieved, and because the brake belt and the operating mechanism of the double pawls are linked, the double pawls are not allowed to leave the ratchet during washing (leave only when dehydrating), so washing At this time, the brake band is only initially loosened, and the separation is not complete, which increases the friction and wear of the brake band, and improves the requirements for the shaping and adjustment of the brake band. In the dehydration working condition, the output shaft and the output shaft sleeve are required to rotate at a high speed in one direction as a whole to achieve the purpose of centrifugal dehydration. In order to change the working conditions of washing and dehydration, the conventional deceleration clutch must be equipped with a complete set of clutch parts such as ratchet, pawl, pawl spring, clutch spring, clutch bushing, adjusting bolt, etc., but it does not have the function of automatic clutch conversion. The operating conditions of washing and dehydration can only be changed through the operation of the external traction motor to cause the clutch spring to perform clutch action. The electronic control system and the clutch control system are relatively complicated, which increases wear and tear and increases the opening force of the brake lever. Directly affect the service life of related components.

The improved pair-type deceleration clutch adopts a two-way drive deceleration mechanism. The deceleration mechanism outputs the rotation of the motor as two rotations with opposite directions and different speeds, so as to drive the pulsator and the inner barrel respectively to perform opposite directions and different speeds. Rotation, and then play the role of rubbing and washing the clothes. Existing deceleration clutches for two-way driving of washing machines generally adopt planetary fixed shaft gear train transmission structure, gear transmission structure and movable tooth transmission structure. The manufacturing cost is relatively high, therefore, the transmission structure of the planetary fixed shaft gear train is widely used.

The Chinese patent with the application number 03239381.4 discloses a fully automatic deceleration clutch for washing machines, which is mainly composed of an input shaft, an output shaft, an output bushing, an input bushing, a brake wheel and a double drive gear mechanism installed inside the brake wheel , the input shaft, the output shaft sleeve and the output shaft are respectively connected with the double drive gear mechanism, and a clutch device is installed between the brake wheel and the output shaft sleeve. In the washing condition, the output shaft and the output shaft sleeve are opposite to each other, and the two directions are driven proportionally, swinging and rotating repeatedly, and relatively powerfully rubbing. In the dehydration working condition, through the locking function of the clutch device, the output shaft and the output shaft sleeve can be automatically combined, and at the same time, they can perform high-speed unidirectional continuous rotation and centrifugal dehydration.

However, in the washing machine with the above-mentioned deceleration clutch, the inner tub and the pulsator frequently run in opposite directions, and the moment of inertia generated by the inner tub directly acts on the overrunning clutch. quality problem. During the rotation of the inner tub, the one-way bearing will often have a reverse force, and the one-way bearing is prone to failure. At the same time, the clutch spring will be tightened during washing, resulting in damage to the clutch spring; The driving wheel is separated and connected to the reducer. The inner drum swings in the dehydration state, which directly acts on the dehydration shaft. The dehydration shaft is eccentric, causing the washing machine to vibrate and produce noise.

In view of this, the present invention is proposed.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a deceleration clutch for washing machines, which is efficient, simple in structure and reliable in bidirectional reverse rotation washing, especially the braking structure of the deceleration clutch.

In order to achieve this purpose, the present invention adopts the following technical solutions: a deceleration clutch for a washing machine, including a housing, a brake wheel inside the housing, a wheel train inside the brake wheel, and a clutch sleeve that can slide up and down and a drive For the shift fork of the clutch sleeve, a brake band is arranged between the housing and the brake wheel, the brake band is arranged around the brake wheel, one end is fixedly installed on the housing, and the other end extends out of the housing to connect with a brake arm. The brake arm is set on a central shaft, and the central shaft is fixedly installed on the housing. The central shaft is located at the lower part of the brake arm. There is also a connecting arm, which drives the connecting arm to move, and the connecting arm drives the brake band and the shift fork. Movement, drives the clutch sleeve to slide up and down to achieve dehydration and washing.

The surfaces of the braking arm and the connecting arm perpendicular to the central axis are respectively bent into a first push piece and a second push piece in the axial direction, and the first push piece and the second push piece are opposite and perpendicular to the brake arm and the second push piece. The direction in which the connecting arm rotates around the central axis.

A torsion spring is arranged between the brake arm and the central shaft, and a torsion spring is arranged between the connecting arm and the central shaft. In a natural state, there is a certain distance between the first push piece and the second push piece.

The center of the first push piece or the second push piece is provided with a hole through which a bolt is installed, the bolt head is located in the gap between the first push piece and the second push piece, the bolt head and the first push piece or Gaskets are arranged between the second push pieces.

The connecting arm extends or bends in the axial direction to form a third push piece, and the third push piece is opposite to one end of the shift fork to drive the shift fork to move.

The brake arm includes two parallel surfaces and a vertical surface connecting the two parallel surfaces, the two parallel surfaces are arranged opposite to each other, and the two parallel surfaces are provided with a through hole for the central axis to pass through, and the vertical surface extends an end, the end The part is connected with a traction motor, and a first push piece perpendicular to the parallel surface is bent and extended on the parallel surface opposite to the connecting arm.

The connecting arm includes two parallel surfaces and a vertical surface connecting the two parallel surfaces, the two parallel surfaces are oppositely arranged, and the two parallel surfaces are provided with a through hole for the central axis to pass through, and the vertical surface is bent and extended to form a sheet The structure forms a third push piece, and the sheet structure is opposite to the driving end of the shift fork. A second push piece perpendicular to the parallel surface is bent and extended on the parallel surface opposite to the brake arm. The second push piece The sheet is opposite to the first push sheet.

A buffer structure is arranged between the third push piece and the shift fork, and the buffer structure is an elastic member, and the force used by the elastic member to be compressed or stretched is greater than the force used to move the clutch sleeve.

The buffer structure includes a movable part arranged on the third push piece or the driving end of the shift fork and movable in a direction perpendicular to the sheet structure or the driving end of the shift fork. A buffer spring is arranged on the movable part, preferably the movable part The part includes a pin shaft, one end of the pin shaft is provided with a circular end cap, the other end is screwed with a nut, and a buffer spring is sleeved between the end cap and the nut on the pin shaft.

A washing machine with the deceleration clutch.

After adopting the technical solution described in the present invention, the following beneficial effects are brought: the present invention provides a high-efficiency, simple and reliable two-way reverse rotation washing deceleration clutch and its application on the washing machine, which improves the transmission efficiency of the washing machine, Reduced energy consumption. The structure is simple, the reliability is high, and the performance of the washing machine is improved. It improves the carrying capacity and overcomes the shortcomings of the traditional dual-power deceleration clutch dehydration shaft separated from the brake wheel, poor system rigidity, large swing of the inner barrel under dehydration state, and loud noise; thus, the deceleration gear train has a novel structure, good system rigidity, and high load-carrying capacity. Strong capacity, reliable operation, long service life, realize the scrubbing of laundry in a stable and ideal water flow, improve the cleaning ratio, reduce energy consumption, reduce or even eliminate the phenomenon of laundry entanglement. The shift fork has simple structure, reliable driving, and convenient installation. It realizes the driving of the clutch sleeve set in the cavity of the stator, and sets a buffer structure to avoid deformation or breakage when the upper end of the clutch sleeve does not correspond to the spline of the fixed sleeve. , improve the service life of the shift fork. At the same time, the shift fork does not need to be too heavy, and the shifting can be realized, which saves costs and reduces the weight of the washing machine. Clutch and brake share one traction motor, which saves cost and simplifies structure.

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Description of drawings

Figure 1: Sectional view of the washing state of the deceleration clutch of the present invention

Figure 2: Sectional view of dehydration state of deceleration clutch of the present invention

Figure 3: Structural diagram of braking and clutching of the deceleration clutch of the present invention

Figure 4: Structural diagram of the shift fork of the present invention

Figure 5: Structural diagram of the shift fork of the present invention

Figure 6: Structural diagram of the motor of the present invention

Figure 7: Structural diagram of the input shaft of the present invention

Figure 8: The connection structure diagram of the motor and the lower casing of the present invention

Fig. 9: structure explosion diagram of the present invention;

Fig. 10: a three-dimensional structural schematic diagram of the assembly relationship of the upper wheel train of the present invention;

Fig. 11: a three-dimensional structural schematic diagram of the assembly relationship between the upper wheel train and the brake wheel of the present invention;

Fig. 12: a three-dimensional structural schematic diagram of the assembly relationship of the lower wheel train of the present invention;

Fig. 13: a three-dimensional structural schematic diagram of the assembly relationship between the lower wheel train and the input bushing of the present invention;

Figure 14: a schematic diagram of the three-dimensional structure of the dehydration shaft of the present invention;

Fig. 15: a schematic diagram of the three-dimensional structure of the brake wheel of the present invention;

Figure 16: an exploded view of the assembly of the brake wheel and the dehydration shaft of the present invention;

Among them, 1. Input shaft, 2. Input shaft sleeve, 3. Lower sun gear, 4. Lower planetary gear, 5. Lower planetary gear carrier, 6. Lower inner gear, 7. Upper planetary gear carrier, 8. Upper planetary gear , 9, upper center wheel, 10, upper internal gear, 11, brake wheel, 12, dehydration shaft, 13, output shaft, 14, upper shell, 15, lower shell, 1501, space, 1502, side wall, 1503, first lower end surface, 1504, second side wall, 1505, third lower end surface, 16, stator, 1601, notch, 1602, mounting part, 1603, spline teeth, 1604, neck, 17, rotor, 18 Torque shaft sleeve, 19, clutch shaft sleeve, 20, shift fork, 21, brake band, 22, brake arm, 2201, first push piece, 23, central shaft, 24, first bearing, 25, second Bearing, 26, third bearing, 27, connecting arm, 2701, second push piece, 2702, third push piece, 29, buffer structure, 2901, pin shaft, 2902, end cover, 2903, nut, 2904, buffer spring , 30, fixing piece, 3001, first lug, 31, torsion spring, 32, traction motor.

detailed description

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, and Fig. 8, a deceleration clutch for a washing machine according to the present invention at least includes a housing and a brake located in the housing. Wheel 11, the wheel train located in the brake wheel 11, the lower part of the housing is fixedly connected to the direct drive motor, the cavity of the direct drive motor stator 16 is provided with a clutch bushing 19 that can slide up and down, and the clutch bushing 19 slides up and down with the transmission respectively. The torque shaft sleeve 18 is connected with the fixed shaft sleeve to realize dehydration and washing. The clutch shaft sleeve 19 is driven by the shift fork 20. There is a gap between the inner side wall of the stator 16 and the outer side wall of the clutch shaft sleeve 19. The stator 16 is located at the top of the gap and is provided with a The notch 1601 , the shift fork 20 protrudes into the notch 1601 and is at least partially located in the cavity of the stator 16 to contact the clutch bushing 19 to move the clutch bushing 19 axially.

The clutch sleeve 19 is arranged inside the cavity of the stator 16 to shorten the axial height of the deceleration clutch and save the axial installation space. One end of the shift fork 20 stretches into the cavity to drive the movement of the clutch shaft sleeve 19. Since the clutch shaft sleeve 19 is set in the cavity of the stator 16, the gap between the outer side wall of the clutch shaft sleeve 19 and the inner side wall of the stator 16 is relatively small. The driving device of the fork 20 cannot be arranged in the cavity, so the driving device of the shift fork 20 is arranged outside the cavity, around the housing, so the other end of the shift fork 20 must be located outside the cavity, around the housing, Driven by the driving device, a notch 1601 is provided on the upper part of the gap between the inner side wall of the stator 16 and the outer side wall of the clutch bushing 19 , and the shift fork extends into the cavity through the notch 1601 to drive the clutch bushing 19 .

The top of clutch shaft sleeve 19 is provided with spring, and shift fork 20 only needs to stir the motion of clutch shaft sleeve 19 upwards, and the downward motion of clutch shaft sleeve 19 is realized by the gravity of spring and clutch shaft sleeve 19 itself.

The shift fork 20 at least includes a toggle portion 2001 in contact with the clutch bushing 19 and a connecting portion 2002 that drives the toggle portion 2001 to move, the toggle portion 2001 is located inside the cavity of the stator 16, and the connecting portion 2002 is connected to a fixed The member 30 is hinged, one end is located outside the cavity of the stator 16, and the other end extends into the cavity of the stator 16.

The connection part 2002 and the toggle part 2001 can be an integral structure, the toggle part 2001 is a semi-arc structure, the arc concave surface 2004 faces the clutch sleeve 19, the arc convex surface 2005 faces the stator 16, and one side of the stator 16 Extend the sheet-like structure outwards to the middle part of the gap between the stator 16 and the clutch sleeve 19, then bend upwards and extend to the outside of the cavity of the stator 16, then bend and extend outwards along the radial direction of the stator 16, and connect with a fixed The member 30 is hinged and fixed to the housing through the fixing member 30, and then a driving end 2003 extends upward. This kind of shift fork integrated structure, the shift fork is integrally formed, which is convenient for modular production and reduces the number of parts of the washing machine. In this case, the gap 1601 provided at the upper part of the gap between the inner side wall of the stator 16 and the outer side wall of the clutch sleeve 19 is relatively large, or the The gap 1601 is a gap.

Or the connection part 2002 and the toggle part 2001 are separate structures, the toggle part 2001 is a semicircular structure, the arc concave surface 2004 faces the clutch sleeve 19, the arc convex surface 2005 faces the stator 16, and faces one side of the stator 16. The side extends outward to the middle part of the gap between the stator 16 and the clutch sleeve 19. The connecting part 2002 is a sheet-like structure hinged with a fixing piece 30, and one end is bent downward and extends into the cavity of the stator 16 to connect with the dial. One end of the moving part 2001 located in the gap between the stator 16 and the clutch sleeve 19 is fixedly connected. The other end of the connecting part 2002 extends radially outward along the stator 16 , and then bends upwards to extend out a driving end 2003 . This structure is convenient for assembly and disassembly.

The connecting part 2002 extends into the cavity of the stator 16 until the toggle part 2001 is located at one end of the gap between the stator 16 and the clutch bushing 19, and then bends and extends inwards to form a part overlapping with the toggle part 2001. Parts are connected by threads. In this case, each part has a simple structure and is convenient for processing.

The housing includes an upper housing 14 and a lower housing 15. The fixing member 30 is a sheet structure fixed on the lower housing 15 and is arranged parallel to the lower end of the lower housing 15. The connecting portion 2002 of the fixing member 30 and the shift fork 20 The installation is: the surface of the sheet structure is provided with two first lugs 3001 perpendicular to the surface, the two first lugs 3001 are oppositely arranged, and the first lugs 3001 are provided with a first mounting hole, so Two second lugs 2006 are arranged opposite to each other on the connecting part 2002, and the two second lugs 2006 are arranged opposite to each other, and a second mounting hole is provided on the second lug 2006, and the first mounting hole is aligned with the second mounting hole Finally, it is connected by a pin shaft, and the pin shaft is provided with a torsion spring. It only needs to drive the shift fork 20 to move in one direction, and the movement in the other direction is automatically reset by the force of the torsion spring. This connection method has a simple structure, is convenient for processing, and is convenient for assembly and installation.

As shown in Figure 6, the stator 16 of the direct drive motor includes a mounting portion 1602, which is an annular flanging with a certain thickness formed by extending the inner circumference of the upper end of the stator 16 inwards. After the edge cooperates with the lower end surface of the lower housing 15, it is connected by threads. The stator mounting part 1602 of the direct drive motor is provided with a notch 1601 for the shift fork to pass through, and the lower end of the lower housing faces the sheet-shaped fixing part 30 where the shift fork 20 should be installed at the notch 1601 . The fixed shaft sleeve and the stator 16 are integrally structured. The fixed sleeve is the installation part of the stator 16 , and the inner circumference of the installation part 1602 or the lower end surface of the installation part 1602 is provided with spline teeth matched with the clutch sleeve 19 .

Specifically, the stator 16 is a cylindrical structure, the center of the cylinder is provided with a cavity, and a neck 1604 extends upward from the inner circumference of the cylinder, and a gap 1601 is provided on the neck 1604, and the shift fork passes through the gap 1601 extends into the stator 16 cavity.

The neck portion 1604 is bent inwardly or outwardly and extends to form a circular flange with a certain thickness to form the mounting portion 1602 of the stator. The mounting portion 1602 is provided with a notch 1601 through which the shift fork 20 passes. 1601 protrudes into the cavity of the stator, and the installation part is connected with the lower end surface of the lower housing 15 through threads after fitting.

The fixed shaft sleeve is the spline tooth 1603 provided on the inner circumference of the upper end of the cavity of the stator 16. Preferably, the fixed shaft sleeve is the inner circumference of the mounting part 1602 or the spline teeth provided on the lower end surface of the mounting part 1602 to cooperate with the clutch shaft sleeve 19. Key tooth 1603.

The shift fork 20 is driven by a driving device, and a buffer structure 29 is arranged between the drive device and the shift fork 20. The buffer structure 29 is an elastic member, and the force required to compress or stretch the elastic member is greater than that of the clutch bushing 19 force, when the shift fork 20 drives the clutch sleeve 19 to move upward, the spline teeth of the clutch sleeve 19 are not inserted into the spline groove of the fixed sleeve, but withstand the spline teeth of the fixed sleeve, and the shift fork 20 This end can no longer move, and now the driving device is still driving the shift fork to move. If there is no buffer structure 29, the shift fork will be deformed or broken. After the buffer structure 29 is installed, the shift fork can no longer move. Structural movement, the fork will not deform or break. The force required to compress or stretch the elastic member is greater than the force required to move the clutch bushing 19, so that the driving device drives the shift fork 20 to move without driving the buffer structure when the clutch bushing 19 is under normal conditions. . The buffer structure can prevent the shift fork from being impacted and prolong the service life of the shift fork. At the same time, the shift fork can be moved without being too heavy, saving costs and reducing the weight of the washing machine.

Specifically, the driving end 2003 of the shift fork 20 is driven by a driving device, and a buffer structure 29 is provided between the driving device and the driving end 2003. The buffer structure 29 is an elastic member, which is compressed or stretched by the elastic member. The required force is greater than the force to move the clutch sleeve 19. When the shift fork 20 drives the clutch sleeve 19 to move upward, the spline teeth of the clutch sleeve 19 are not inserted into the spline groove of the fixed sleeve, but are held against the fixed shaft. The spline teeth of the sleeve and the toggle part 2001 of the shift fork 20 can no longer move. At this time, the driving device is still driving the shift fork to move. If there is no buffer structure 29, the shift fork will be deformed or broken. A buffer structure is provided. After 29, the driving device drives at this time, the toggle part 2001 of the shift fork does not move, the buffer structure moves, and the driving end 2003 of the shift fork does not move, so the shift fork will not be deformed or broken. The force required to compress or stretch the elastic member is greater than the force required to move the clutch bushing 19, so that the driving device drives the shift fork 20 to move without driving the buffer structure when the clutch bushing 19 is under normal conditions. .

The shift fork 20 at least includes a toggle part 2001 in contact with the clutch bushing and a connection part 2002 that drives the movement of the toggle part. It is a sheet structure, and the two are arranged opposite to each other. The buffer structure is located between the two sheet structures, fixed to one of the sheet structures, and opposite to the other sheet structure.

The buffer structure 29 includes a movable part that is arranged on the third push piece or the driving end of the shift fork and can move in a direction perpendicular to the sheet structure or the driving end of the shift fork. A buffer spring is arranged on the movable part. Specifically, The buffer structure 29 includes a pin shaft 2901, one end of the pin shaft 2901 is provided with a circular end cap 2902, the other end is screwed with a nut 2903, and a buffer spring 2904 is sleeved between the end cap 2902 and the nut 2903 on the pin shaft 2901 , the force required to drive the buffer spring 2904 is greater than the force required to drive the clutch sleeve 19 .

The driving end 2003 is provided with a through hole, through which the through hole is sleeved on the pin shaft 2901, the driving end 2003 and the pin shaft can be flexibly connected, and are located between the nut 2903 and the buffer spring 2904, and the buffer spring 2904 and the nut 2903 can be mutually Against the driving end 2003, or the driving device is provided with a through hole, through which the through hole is sleeved on the pin shaft 2901, the driving device and the pin shaft can be flexibly connected, and are located between the nut 2903 and the buffer spring 2904, circular The shaped end cap 2902 faces the driving device of the shift fork 20, the spring 2904 is in a compressed state, and the spring 2904 and the nut 2903 can be against the driving end 2003.

The other end of the circular end cap 2902 located on the pin shaft 2901 is an arc curved surface, preferably a spherical curved surface. It is set as a spherical curved surface, and when in contact with the curved surface, the thrust force can be distributed to the direction of the pin shaft 2901 to the greatest extent, and the shift fork 20 can be driven with the minimum force.

A brake wheel 11 is arranged in the housing, a brake band 21 is arranged between the brake wheel 11 and the housing, the brake band 21 is arranged around the brake wheel 11, one end is fixedly installed on the housing, and the other end extends out of the housing to connect a Brake arm 22, brake band 21 is connected with a brake arm 22, and the center axis 23 of brake arm 22 is fixedly installed on the lower surface of deceleration clutch upper housing 14 or the upper surface of lower housing 15, and the center axis 23 is located at the brake arm The bottom of 22 is also provided with a connecting arm 27, the brake arm 22 drives the connecting arm 27 to move, the connecting arm 27 drives the shift fork 20 to move, and the driving clutch bushing 19 slides up and down to be connected with the torque transmission bushing and the fixed bushing respectively to realize dehydration and washing. The connecting arm 27 is the driving device of the shift fork. The brake arm 22 is pulled by a traction motor 32 .

The surfaces of the brake arm 22 and the connecting arm 27 that are perpendicular to the central axis 23 are respectively bent axially to form a first push piece 2201 and a second push piece 2701, the first push piece 2201 and the second push piece 2701 are opposite and vertical In the direction in which the brake arm 22 and the connecting arm 27 rotate around the central axis 23 . When the brake arm 22 rotates around the central axis, the first push piece 2201 pushes the second push piece 2701 to move, and the second push piece 2701 drives the connecting arm 27 to rotate around the central axis 23 .

A torsion spring is arranged between the brake arm 22 and the central shaft 23, and a torsion spring is arranged between the connecting arm 27 and the central shaft 23. It only needs to drive the movement of the brake arm 22 in one direction, and the movement in the other direction depends on the torsion spring. The reset of the spring is realized.

In a natural state, there is a certain distance between the first push piece 2201 and the second push piece 2701 . It can be realized that the traction motor 32 can only drive the brake band to loosen under a small stroke, and cannot drive the shift fork 20 to move. When the traction motor 32 reaches a larger stroke, the first push piece 2201 and the second push piece 2701 contact, the brake arm 22 can drive the connecting arm 27, and the connecting arm 27 drives the shift fork 20 again.

The center of the first push piece 2201 or the second push piece 2701 is provided with a hole, and a bolt is installed through the hole. A spacer is provided between the piece 2201 or the second push piece 2701 . The spacer can adjust the distance between the first push piece 2201 and the second push piece 2701 to ensure that the stroke of the traction motor 21 matches the position of the clutch sleeve 19 .

The brake arm 22 includes two parallel surfaces and a vertical surface connecting the two parallel surfaces, the two parallel surfaces are oppositely arranged, and the two parallel surfaces are provided with a through hole for the central axis to pass through, and the vertical surface extends from an end, the end A traction motor is connected, and a first push piece perpendicular to the parallel surface is bent and extended on the parallel surface opposite to the connecting arm.

The connecting arm 27 extends or bends a third push piece 2702 in the axial direction, and the third push piece 2702 is opposite to one end of the shift fork to drive the shift fork to move. The third push piece 2302 is the driving device of the shift fork 20 .

The connecting arm 27 includes two parallel surfaces and a vertical surface connecting the two parallel surfaces, the two parallel surfaces are oppositely arranged, and the two parallel surfaces are provided with a through hole for the central axis to pass through, and the vertical surface bends and extends into a sheet-like structure A third push piece is formed, the sheet-like structure is opposite to the driving end of the shift fork, and a second push piece perpendicular to the parallel surface is bent and extended on the parallel surface opposite to the brake arm, and the second push piece Opposite to the first push piece.

The above-mentioned buffer structure is arranged between the third push piece 2302 and the shift fork 20, and the shift fork is provided with a through hole, which is sleeved on the pin shaft 2901 through the through hole, and is located between the nut 2903 and the buffer spring 2904. The shaped end cap faces the third push piece 2702, or the third push piece 2302 is provided with a through hole, through which the through hole is sleeved on the pin shaft 2901, and is located between the nut 2903 and the buffer spring 2904, the round end The cover 2902 faces the shift fork, and the buffer spring 2904 is in a compressed state.

The braking device of the deceleration clutch includes a brake wheel 11 outside the wheel train, and a brake band 21 outside the brake wheel 11. The clutch device of the deceleration clutch includes a clutch sleeve 19 that can slide up and down and a drive clutch sleeve. The shift fork 20, the brake band 21 and the shift fork 20 share a traction motor 21, which saves cost, and the traction motor 32 includes at least two strokes. One traction motor 32 can realize the driving of the brake band 21 and the clutch shaft sleeve 19, the brake wheel 11 is connected with the dehydration shaft 12 of the washing machine as a whole, when the washing machine is washing, the output shaft 13 and the dehydration shaft 12 rotate in reverse, when When the washing machine is dehydrating, the dehydration shaft 12 and the output shaft 13 rotate in the same direction. In both the washing state and the dehydration state, the brake wheel 11 rotates, so the brake arm 22 is required to control the brake band 21 to loosen the brake wheel 11. When the washing machine is washing, the output shaft 13 and the dehydration shaft 12 rotate in opposite directions, and the clutch sleeve 19 is located at the upper part to connect with the fixed sleeve. When the washing machine is dehydrating, the dehydration shaft 13 and the output shaft 12 rotate in the same direction, and the clutch sleeve 19 is located at the lower part Connected with the torque transmission sleeve, in the natural state of the washing machine, the clutch sleeve 19 is located at the lower part by the force of the spring, so the traction motor 32 is provided with two strokes, and in the first stroke, only the brake arm 22 is driven to drive the brake band 21 Release the brake wheel 11, during the second stroke, drive the brake arm 22 to drive the brake band 21 to loosen the brake wheel 11, and at the same time the brake arm 22 drives the connecting arm 27, and the connecting arm 27 drives the shift fork 20, and the shift fork 20 Stir the clutch axle sleeve 19 to move upwards.

The brake band 21 is connected to the brake arm 22, and the brake arm 22 is provided with a central shaft 23 fixedly installed on the lower surface of the upper housing 14 of the deceleration clutch or the upper surface of the lower housing 15, and one end of the brake arm 22 is connected to the traction motor 32, The other end is connected with the brake band, and the central axis is located at the lower part of the brake arm. There is also a connecting arm, the brake arm drives the connecting arm to move, the connecting arm drives the shift fork to move, and the shift fork drives the clutch sleeve to slide up and down respectively with the torque shaft The sleeve is connected with the fixed shaft sleeve to realize dehydration and washing.

The traction motor 32 includes a first stroke and a second stroke. The traction displacement of the first stroke is smaller than that of the second stroke. In the state of the first stroke, the brake arm 22 drives the brake band 21 to loosen. The shift fork 20 does not move, and in the second stroke state, the brake arm 22 drives the brake band 21 to loosen, and the shift fork 20 moves the clutch bushing 19 to connect upward with the fixed bushing. In the first stroke and the second stroke, the brake band 21 is in a loose state, but the degree of loosening is different. Only in the state of emergency stop, operation completion or manual stop, the brake band 21 is in a tight state, and the wear and tear during use is small, reducing the probability of abnormal brake noise.

The surfaces of the brake arm 22 and the connecting arm 27 that are perpendicular to the central axis 23 are respectively bent axially to form a first push piece 2201 and a second push piece 2701, the first push piece 2201 and the second push piece 2701 are opposite and vertical In the direction in which the brake arm 22 and the connecting arm 27 rotate around the central axis, in the first stroke state, the first push piece 2201 and the second push piece 2701 are not in contact, and in the second stroke state, the first push piece 2201 is in contact with the second push piece 2701. The connecting arm 27 extends or bends a third push piece 2702 in the axial direction, and the third push piece 2702 is opposite to one end of the shift fork 20 to drive the shift fork to move. In the second stroke state, the third push piece 2702 and the shift fork The opposite ends of the forks are in contact.

In the initial state, the clutch sleeve is connected to the torque transmission sleeve, the traction motor 32 does not operate, in the washing state, the traction motor goes to the second stroke, and in the dehydration state, the traction motor 32 goes to the first stroke.

The radially outer portion of the lower end surface of the lower housing 15 is fixedly connected to the direct drive motor stator 16, and the radially inner portion of the lower end surface of the lower housing 15 is recessed upwards to form a space 1501, and a brake wheel is installed in the space 1501 The support bearing 25. The housing is divided into an upper housing 14 and a lower housing 15. The upper housing 14 is connected to the bottom of the outer tub of the washing machine. The direct drive motor is directly installed on the lower part of the lower housing, which can reduce the number of connecting parts and parts of the washing machine. Simplify the structure. The outer periphery of the shell is a cylindrical structure with the same upper and lower diameters, so that the outer shell has less bending and is easy to install.

The bottom end of the side wall 1502 of the lower casing 15 is bent radially inward for a certain distance to form the first lower end surface 1503, then bent upward and extended for a certain distance to form the second side wall 1504, and then bent inward for a certain distance to form the second side wall 1504. A third lower end surface 1505 is formed, and the supporting bearing 25 of the brake wheel 11 is installed in the space formed by the second side wall 1504 and the third lower end surface 1505 . The supporting bearing is a rolling bearing.

The stator of the direct drive motor includes a mounting portion 1602, which is an annular flanging with a certain thickness formed by extending the inner circumference of the upper end of the stator 16 inwards. After the first lower end surface 1503 is fitted, it is threaded. The inner circumference of the installation part 1602 is provided with spline teeth, or the lower end surface of the installation part 1602 is provided with spline teeth.

The clutch bushing 19 is sleeved on the outside of the input bushing 2 and is slidably and non-rotatably connected with the input bushing 2. The clutch bushing 19 is arranged in the cavity of the stator, and the clutch bushing moves upward to connect with the installation part of the stator. Keyed connection, fixed input shaft sleeve.

As shown in Figure 1, Figure 2 and Figure 7, the deceleration clutch includes a motor, an input shaft 1, an input shaft sleeve 2, a wheel train, an output shaft 13, and a dehydration shaft 12, and one end of the input shaft 1 is connected to the motor rotor 17, and the other One end is connected with the wheel train, and a torque transmission shaft sleeve 18 is arranged on the input shaft 1 close to the rotor of the motor. The sleeve 18 is integrally formed with the input shaft 1 .

The outer circumference of the torque transmission sleeve 18 is provided with spline teeth or the upper end surface of the torque transmission sleeve is provided with spline teeth. The clutch bushing 19 is sleeved on the outside of the input bushing 2 and is slidably and non-rotatably connected with the input bushing 2. The clutch bushing 19 is arranged in the cavity of the stator 16, and the clutch bushing 19 moves downward and transmits torque. The shaft sleeve 18 is splined to connect the input shaft sleeve 2 with the input shaft 1 .

One end of the input shaft 1 connected to the gear train is provided with a sun gear 3 , and the sun gear 3 is integrally formed or fixedly connected with the input shaft 1 .

One end of the input shaft 1 connected to the motor rotor 17 is connected by a lock nut, or one end of the input shaft 1 connected to the motor rotor 17 is connected by a nut, and a lock washer is arranged between the nut and the rotor 17 .

As shown in Fig. 1, Fig. 2, Fig. 9, Fig. 10, Fig. 11, Fig. 12, and Fig. 13, a deceleration clutch for a washing machine according to the present invention includes a brake wheel 11 and a double-layer planetary gear train arranged therein, The lower gear train of the double-layer planetary gear train includes the lower sun gear 3, the lower planetary gear 4 meshing with it, the lower planetary gear carrier 5 and the lower inner ring gear 6, the lower sun gear 3 is fixedly connected with the input shaft 1, and the lower planetary gear 4 Meshes with the lower ring gear 6, and the lower part of the lower ring gear 6 is fixedly connected with the input shaft sleeve 2; the upper gear train of the double-layer planetary gear system includes the upper sun gear 9, the upper planetary gear 8 meshing with it, and the upper planetary gear The frame 7 and the upper ring gear 10, the upper sun gear 9 is connected with the output shaft 13, the upper planetary gear 8 meshes with the upper ring gear 10, and the periphery of the upper ring gear 10 is fixedly connected with the brake wheel 11; the lower layer The center position of the planetary gear carrier 5 is fixedly connected with the upper layer sun gear 9, and the upper layer planetary gear carrier 7 is fixedly connected with the lower layer ring gear 6 through a keyed connection.

The washing machine deceleration clutch of the present invention includes upper and lower two-layer planetary gear trains, power transmission and redistribution are performed between the upper and lower planetary gear trains, the output shaft 13 is connected to the pulsator of the washing machine, and the dehydration shaft 12 is connected to the inner tub of the washing machine. The deceleration clutch cooperates with the clutch device to realize the reverse rotation of the inner tub and the pulsator when the washing machine is washed. At the same time, the structure and internal connection mode of the deceleration clutch are improved, so that the transmission of the deceleration clutch of the washing machine of the present invention is more stable and reliable, and the overall structural strength is higher.

The gear train of the present invention is made up of upper and lower planetary gear trains, since the upper gear train is fixedly connected with the lower inner ring gear 6 through the upper planetary gear carrier 7, and the upper layer sun gear 9 is fixedly connected with the lower planetary gear carrier 5 to realize the The power of the lower gear train is transmitted to the upper gear train, and then transmitted to the output shaft 13 and the dehydration shaft 12 . Therefore, the present invention designs the structure of the upper planetary gear carrier 7, the upper layer sun gear 9, and the lower layer planetary gear carrier 5, and realizes the upper layer planetary gear carrier 7 and the lower layer ring gear 6, the upper layer sun gear 9 and the The fixed connection of the lower planetary gear frame 5 is simple and reliable, which makes the power transmission of the deceleration clutch of the present invention more stable, has a longer service life, reduces manufacturing costs, and has good market promotion value.

How to design the structure of the upper planetary carrier 7, the lower ring gear 6, the upper sun gear 9, and the lower planetary carrier 5, and how to realize the upper planetary carrier 7 and the lower ring gear 6, the upper sun gear 9 and the lower planet The fixed connection mode of the wheel frame 5 is the key to realizing the technical purpose of the present invention. Specifically, the following technical solutions are adopted:

According to the present invention, the upper planetary gear frame 7 is fixedly connected with the lower layer ring gear 6 through a keyed connection, the upper layer planetary gear frame 7 is provided with a connection key, and the lower layer ring gear 6 is provided for assembly The lower ring gear connection part 602 of the connection key of the upper planet carrier (7).

Further, the connecting keys on the upper planetary gear carrier 7 are spline teeth, and the lower ring gear connecting portion 602 is a spline tooth groove arranged on the inner wall of the upper opening of the lower ring gear 6 , The spline teeth of the upper planetary gear carrier 7 are inserted into the spline tooth grooves of the lower inner ring gear 6 to realize fixed connection.

The upper planetary carrier 7 includes an upper planetary carrier seat 704 and an upper planetary wheel carrier cover 701, and a plurality of upper connecting columns 703 for connecting the upper planetary wheel carrier cover 701 are vertically arranged on the circumference of the upper planetary wheel carrier seat 704; The upper planetary gear 8 is arranged between the upper planetary carrier cover 701 of the upper planetary carrier 7 and the upper planetary carrier seat 704, and the upper planetary wheel carrier seat 704 of the upper layer planetary carrier 7 and the lower ring gear 6. Fixed connection by spline connection.

The upper planetary wheel frame seat 704 and the upper layer planetary wheel frame cover 701 of the present invention are both disc-shaped structures, and the two are connected through the upper connecting column 703 to form the upper layer planetary wheel frame 7, and the upper layer of the planetary wheel frame 7 is formed by the upper connecting piece 703 and the upper layer planetary wheel frame The seat 704 is integrally formed, and a plurality of columns protrude from the disk surface of the upper planetary wheel frame seat 704 to form an upper connecting piece 703 . Correspondingly, a plurality of through holes matching the upper connecting piece 703 are opened on the disk surface of the upper planetary gear carrier cover 701, and the connecting piece 703 can be inserted into the through hole on the upper layer planetary gear carrier cover 701 to realize Connect to become one. The upper planetary gear 8 is installed on the upper planetary carrier 7. Specifically, a plurality of upper mounting holes 705 are provided in the circumferential direction of the upper planetary wheel frame seat 704. The upper mounting holes 705 are blind holes. The upper planetary gear shaft 702 is inserted, and the upper planetary gear 8 is installed on the upper planetary gear shaft 702 to realize autorotation, and at the same time, it can revolve with the upper planetary gear carrier 7 . The overall structure of the upper planetary carrier 7 of the present invention is simple to assemble and has high stability.

Since the upper planetary gear carrier seat 704 of the upper planetary gear carrier 7 of the present invention is at the bottom and closer to the lower gear train during installation, the connection between the upper planetary gear carrier 7 and the lower ring gear 6 of the lower gear train is mainly through the upper planetary gear carrier. The wheel carrier seat 704 is fixedly connected with the lower ring gear 6 to realize. In this way, assembly and connection can be performed along one direction, which is more convenient and quicker.

Specifically, splines are respectively provided on the outer circumference of the upper planetary carrier seat 704 of the upper planetary carrier 7 and on the inner wall of the lower ring gear 6 near the end of the upper gear train. In this way, during installation, only the splines of the upper planetary gear carrier 704 need to be inserted into the splines of the lower ring gear 6 to realize the fixed connection between the two, the connection method is simple, and the fixed connection method is stable and reliable. In addition, since the inner teeth 601 of the lower inner ring gear 6 are provided on the inner side of the lower inner ring gear 6, it is more convenient to process the inner teeth 601 of the lower inner ring gear while processing the spline teeth inside the inner ring gear.

The lower planetary carrier 5 includes a lower planetary carrier seat 501 and a lower planetary carrier cover 504, and a plurality of lower connecting columns 502 for connecting the lower planetary carrier cover 504 are vertically arranged on the circumference of the lower planetary carrier seat 501; The lower planetary gear 4 is arranged between the lower planetary carrier seat 501 of the lower planetary carrier 5 and the lower planetary carrier cover 504, and the lower planetary carrier seat 501 of the lower planetary carrier 5 is connected to the upper sun gear 9 The connection is fixed by screw connection, spline connection or hole pin assembly.

The installation method of the lower planetary carrier 5 of the present invention is basically the same as that of the upper planetary carrier 7, the lower planetary carrier seat 501 and the lower planetary carrier cover 504 are disc-shaped structures, and the two are connected by the lower connecting column 503 Get up to form the lower planetary carrier 5. The lower planetary gear 4 is installed on the lower planetary carrier 5. Specifically, a plurality of lower mounting holes 506 are provided in the circumferential direction of the disk surface of the lower planetary wheel carrier seat 501. The lower mounting holes 506 are blind holes. The lower planetary gear shaft 503 is inserted, and the lower planetary gear 4 is installed on the lower planetary gear shaft 503 to realize self-rotation, and at the same time, it can revolve with the lower planetary gear carrier 5 . The overall structure of the lower planet carrier 5 of the present invention is simple to assemble and has high stability.

Specifically, when the lower planetary gear holder 501 is threadedly connected with the upper sun gear 9, the lower planetary gear holder connecting portion 505 is a threaded hole, and the lower end of the upper sun gear 9 is flanged outward to form the upper center. Gear mounting seat 901, threaded holes are provided on the upper layer sun gear mounting seat 901, and bolts or screws are used to pass through the threaded holes of the lower planetary wheel frame 501 and the threaded holes on the upper layer sun gear 9 to achieve fixed connection, and the threaded connection is used for fixing It is more reliable and ensures the stability of power transmission.

When the lower planetary gear holder 501 is splined connected with the upper sun gear 9, an opening is provided at the center of the lower planetary gear holder 501, and the lower planetary gear holder connecting portion 505 is a spline arranged on the inner wall of the opening, so The lower part of the upper sun gear 9 is provided with splines that match the splines on the lower planet carrier 501 to realize the spline connection between the two. The method of spline connection makes the assembly more simple and convenient, and at the same time, the fixed connection is reliable and effective.

The lower connecting column 502 of the present invention is arranged along the edge of the lower planetary gear frame 501 , and the circumferential length of the lower connecting column 502 is greater than the radial length. This setting mainly has the following technical effects:

First of all, after the transmission ratio of the lower gear train is determined, the sizes of the lower planetary gear 4 and the lower ring gear 6 are all determined. The size of the frame 501 is limited by the specifications of the lower ring gear 6, therefore, the size of the lower planetary gear frame 501 needs to be as small as possible to meet the installation requirements. And the lower connecting column 502 is arranged on the edge of the lower floor planetary wheel frame 501, so that the gap between the lower connecting columns 502 is larger to meet the requirements of the lower planetary wheel frame 501 after the design is small without affecting the installation of the lower planetary wheel 4 .

Secondly, the circumferential length of the lower connecting column 502 is greater than the radial length so that the lower connecting column 502 bears a larger torque, ensuring the overall stability of the lower planetary carrier 5 .

Finally, the circumferential length of the lower connecting column 502 is greater than the radial length so that the gap between the lower connecting column 502 and the planetary gear train is smaller, which can effectively prevent dust from entering the inner layer of the lower planetary gear 4 . The lower planetary gear holder 501 of the lower planetary gear carrier 5 of the present invention is located at the upper end of the lower planetary gear carrier cover 504 after assembly, and is closer to the upper gear train. Since the upper layer sun gear 9 is fixedly connected with the lower planetary gear carrier 5, so The upper sun gear 9 is fixedly connected to the lower planetary carrier seat 501 of the lower planetary carrier 5 . Therefore, a lower planetary gear carrier connecting portion 505 for fixed connection with the upper layer sun gear 9 is provided at the center of the lower planetary gear carrier seat 501 .

The lower end of the lower ring gear 6 is fixedly connected with the input shaft sleeve 2 . Specifically, the input bushing 2 includes an input bushing body 201 and an input bushing seat 202, the input bushing seat 202 is formed by flanging the end of the input bushing body 201 outward, and the input bushing seat A plurality of input shaft sleeve connecting columns 203 extend from the circumferential direction of 202, and a plurality of first installation holes 603 are provided on the end of the assembly of the inner ring gear 6 and the input shaft sleeve 2, and the input shaft sleeve connecting columns 203 Insert into the first installation hole 603 to realize fixed connection.

The upper inner ring gear 10 and the brake wheel 11 are fixed together through a spline connection, the outer wall of the upper inner ring gear 10 is provided with splines 1002 on the outer wall of the upper inner ring gear, and the inner wall of the brake wheel 11 corresponds to A brake wheel spline 1101 is provided at the position of the upper ring gear 10 .

The upper end of the brake wheel 11 of the present invention is fixedly connected to the dehydration shaft 12, and the lower end of the dehydration shaft 12 is turned outwards to form a dehydration shaft mounting seat. The upper end of the brake wheel 11 is connected to the dehydration shaft of the dehydration shaft. The mount is fixedly connected.

As shown in Figure 1, Figure 2, Figure 14, Figure 15, and Figure 16, the dehydration shaft of the washing machine includes a shaft body 1201 and a shaft seat 1202. The upper end of the shaft body 1201 is fixedly connected with the washing tub of the washing machine, and the shaft body 1201 The lower end of the shaft body is fixedly connected with the shaft seat 1202 or the lower end of the shaft body 1201 is integrally formed with the shaft seat 1202; the dehydration shaft is connected with the reducer of the washing machine through the shaft seat; the shaft body is provided for the output shaft 13 to pass through The shaft through hole 1203.

Since the brake wheel 11 of the deceleration clutch of the present invention is fixedly connected to the dehydration shaft, this embodiment provides a dehydration shaft with a brand new structure, which consists of two parts, the shaft body 1201 and the shaft seat 1202, which are integrally formed or fixedly connected separately. Composition, the axle seat 1202 is more convenient to be fixedly connected with the brake wheel 11.

Therefore, the dehydration shaft of this embodiment is suitable for the deceleration clutch of the present invention, which facilitates the assembly of the dehydration clutch and the dehydration shaft, and ensures more stable power transmission of the dehydration shaft.

Specifically, the shaft body 1201 described in this embodiment is cylindrical, the shaft seat 1202 is disc-shaped, and the lower end of the shaft body 1201 is integrally formed with the shaft seat 1202. Preferably, the shaft seat 1202 is formed by flanging the lower end of the shaft body 1201 outward.

In this embodiment, the shaft body 1201 and the shaft seat 1202 are integrally formed, which ensures the integrity of the dehydration shaft and makes the overall structure of the dehydration shaft more stable.

The dehydration shaft of this embodiment can also adopt a split design, specifically, the shaft body 1201 is cylindrical, the shaft seat 1202 is disc-shaped, and an opening is set at the center of the disc-shaped shaft seat 1202 , the lower end of the shaft body 1201 is splined to the opening of the shaft seat 1202 . In this way, mainly because the upper end opening of the brake wheel 11 is relatively large, in order to realize the tight installation between the two, the size of the axle seat 1202 is relatively large, and the rear axle body 1201 and the axle seat 1202 can be processed separately by adopting separate arrangements. It is easier to process, fixed by spline connection, and the assembly method is simple and effective.

The dehydration clutch of the washing machine is equipped with the above-mentioned dehydration shaft 12, and includes a deceleration device. The deceleration device includes a brake wheel 11 and a gear train inside the brake wheel 11. The end of the brake wheel 11 close to the dehydration shaft 12 has an opening. The shaft seat 1202 of the dehydration shaft 12 described above is fixedly installed on the opening of the braking wheel 11 .

The shaft seat 1202 of the dehydration shaft 12 in this embodiment is fixedly connected to the opening of the brake wheel 11 by riveting, and the shaft seat 1202 of the dehydration shaft 12 completely covers the opening of the brake wheel 11 . In this embodiment, the dehydration shaft 12 and the shaft seat 1202 are fixedly connected together by riveting, the assembly method is simple, and the connection is more stable and reliable, ensuring the transmission stability between the brake wheel 11 and the dehydration shaft 12 .

Specifically, the opening of the brake wheel 11 is provided with a riveting portion 1102, and the thickness of the inner wall of the riveting portion 1102 is smaller than the thickness of the circumferential side wall of the brake wheel 11 so that the inner wall of the riveting portion 1102 is consistent with the inner wall of the brake wheel 11. A stepped structure for limiting the shaft seat of the dehydration shaft 12 is formed between the inner walls; the axial height of the riveted part 1102 is greater than the thickness of the shaft seat 1202 of the dehydration shaft 12 .

The way that the brake wheel 11 is fixedly connected with the dehydration shaft 12 changes the assembly method of the deceleration clutch of the present invention. When the deceleration clutch of the present invention is assembled, it is assembled from the output shaft end to the input shaft. Therefore, when riveting, First put the dehydration shaft 12 on the output shaft 13, fix the dehydration shaft 12 and install the brake wheel 11 on the dehydration shaft 12, and insert the shaft seat 1202 of the dehydration shaft 12 into the opening of the upper end of the brake wheel 11 During the process, when reaching the step structure, it is limited and cannot continue to extend, at this time, the riveting part 1102 is flanged inward and then riveted.

The structure of the dehydration shaft 12 of the deceleration clutch changes the installation method of the deceleration clutch. The connection relationship between the dehydration shaft 12 and the brake wheel 11 makes the assembly process more reasonable and effective, and the overall degree of assembly is higher, ensuring the stability of the transmission.

The way that brake wheel 11 is fixedly connected with dehydration shaft 12 can also adopt the mode of threaded connection, and the opening end of described brake wheel 11 is flanged outwards to form brake wheel connecting portion, and the shaft of described dehydration shaft 12 The seat 1202 is connected with the brake wheel connecting portion by thread. The method of screw connection is simpler and more convenient, and it is easier to assemble.

The brake wheel 11 and the dehydration shaft 12 can also be fixedly connected by a spline connection. The brake wheel 11 and the shaft seat 1202 of the dehydration shaft 12 are fixed by a spline connection. The shaft of the dehydration shaft 12 Spline teeth are arranged on the circumferential side wall of the seat 1202 , and spline tooth grooves for assembling the spline teeth of the shaft seat are arranged on the inner wall of the opening of the brake wheel 11 . Using the spline connection method requires higher machining accuracy of parts, higher assembly accuracy, and better stability after assembly, which is suitable for high-precision assembly requirements.

Since the upper inner ring gear 10 and the brake wheel 11 of the present invention are connected and fixed by splines, the inner side wall of the brake wheel 11 corresponds to the upper gear train, and the circumferential outer wall of the upper inner ring gear 10 is respectively provided with spline teeth. There is a gap between the inner side wall of the brake wheel 11 corresponding to the lower gear train and the lower ring gear 6 .

The lower end opening of the brake wheel 11 is sleeved on the input shaft sleeve 2 , and the lower end opening of the brake wheel 11 extends outward along the axial direction to form a brake wheel installation part 1103 , between the brake wheel installation part 1103 and the input shaft sleeve 2 At least two sets of third bearings 26 are provided; the deceleration device includes a housing, the brake wheel 11 is arranged inside the housing, and at least one set of second bearings is arranged between the brake wheel installation part 1103 and the lower end of the housing. The bearing 25, preferably, the second bearing 25 and the third bearing 26 are rolling bearings.

At least one set of first bearings 24 is installed between the shaft seat 1202 of the dehydration shaft 12 and the housing, and the first bearings 24 are not rolling bearings.

The dehydration shaft 12 is fixedly connected with the brake wheel, and the upper end and the lower end of the brake wheel 11 are respectively provided with bearings, so that the dehydration shaft 12 can be better supported to prevent the inner barrel from shaking during the dehydration process, and at the same time reduce the The damage caused by the shaking of the inner barrel to the deceleration clutch.

The present invention also provides a washing machine adopting the above-mentioned deceleration clutch of the washing machine, which can realize the reverse rotation of the pulsator and the inner tub during the washing process, and has better washing effect.

The embodiment is only to describe the preferred embodiment of the present invention, but not to limit the concept and scope of the present invention. Under the premise of not departing from the design idea of the present invention, various changes made by those skilled in the art to the technical solution of the present invention and improvements all belong to the protection scope of the present invention.

Claims (10)

1. a use in washing machine speed-reducing clutch, including a housing, braked wheel in housing, train within braked wheel, also include can slide up and down clutch axle sleeve and driving the shift fork of clutch axle sleeve, it is characterized in that: a brake band is set between housing and braked wheel, brake band is arranged around braked wheel, one end is fixedly mounted on housing, the other end stretches out housing and connects a brake arm, brake arm is arranged on a central shaft, central shaft is fixedly mounted on housing, central shaft is positioned at the bottom of brake arm and is additionally provided with a linking arm, brake arm drives linking arm motion, linking arm drives brake band and shift fork motion, drive clutch shaft set to slide up and down and realize dehydration and washing.

2. a kind of use in washing machine speed-reducing clutch according to claim 1, it is characterized in that: the surface being perpendicular to central shaft on described brake arm and linking arm bends out the first push jack and the second push jack respectively in axial direction, first push jack and the second push jack are relative, and are perpendicular to brake arm and the linking arm direction around central axis.

3. a kind of use in washing machine speed-reducing clutch according to claim 1 and 2, it is characterized in that: between described brake arm and central shaft, torsion spring is set, arranging torsion spring between described linking arm and central shaft, under naturalness, the first push jack and the second push jack have certain distance.

4. according to the arbitrary described a kind of use in washing machine speed-reducing clutch of claim 1-3, it is characterized in that: the center of described first push jack or the second push jack is provided with hole, by this hole, one bolt is installed, bolt head is positioned between the first push jack and the gap of the second push jack, bolt head and the first push jack or the second push jack and is provided with pad.

5. according to the arbitrary described a kind of use in washing machine speed-reducing clutch of claim 1-4, it is characterised in that: described linking arm axially extends or bends out the 3rd push jack, and the 3rd push jack is relative with one end of shift fork, and shift fork moves.

6. according to the arbitrary described a kind of use in washing machine speed-reducing clutch of claim 1-5, it is characterized in that: described brake arm includes two parallel surfaces and connects the vertical of two parallel surfaces, two parallel surfaces are oppositely arranged, and two parallel surface be provided with mean for the through hole of central shaft traverse, described vertical extends one end, this end connects a traction electric machine, the described parallel surface relative with linking arm bends and extends first push jack vertical with this parallel surface.

7. according to the arbitrary described a kind of use in washing machine speed-reducing clutch of claim 1-6, it is characterized in that: described linking arm includes two parallel surfaces and connects the vertical of two parallel surfaces, two parallel surfaces are oppositely arranged, and two parallel surface be provided with mean for the through hole of central shaft traverse, described vertical bends and extends flap structure and forms the 3rd push jack, this laminated structure is relative with the drive end of shift fork, bending on the described parallel surface relative with brake arm and extend second push jack vertical with this parallel surface, the second push jack and the first push jack are relative.

8. according to the arbitrary described a kind of use in washing machine speed-reducing clutch of claim 1-7, it is characterized in that: between described 3rd push jack and shift fork, buffer structure is set, described buffer structure is an elastic component, and described elastic component is compressed or stretches power used more than the power stirred used by clutch axle sleeve.

9. according to the arbitrary described a kind of use in washing machine speed-reducing clutch of claim 1-8, it is characterized in that: described buffer structure include being arranged on the 3rd push jack or shift fork drive end and can be movable in the direction vertical with this laminated structure or shift fork drive end movable part, movable part arranges a buffer spring, preferred described movable part includes a bearing pin, bearing pin one end is provided with a circular end cap, the other end spins a nut, on bearing pin between end cap and nut sheathed buffer spring.

10. a washing machine with the arbitrary described speed-reducing clutch of claim 1-9.