CN114381908A - Speed reduction clutch device of washing machine, washing machine and control method of washing machine - Google Patents

Abstract

The invention provides a speed reduction clutch device of a washing machine, the washing machine and a control method thereof, wherein the speed reduction clutch device comprises a clutch mechanism, the clutch mechanism comprises a clutch sleeve, a fixed sleeve which is fixedly arranged, a torque transmission shaft sleeve which synchronously rotates with an input shaft, a shifting fork assembly which shifts the clutch sleeve to reciprocate and a shifting fork driving device which drives the shifting fork assembly to move, the shifting fork driving device comprises a driving cam which can rotate in the vertical direction, the driving cam is provided with a plurality of driving convex surfaces which drive the shifting fork assembly and have different strokes, so that the shifting fork assembly is driven to shift the clutch sleeve to be meshed with the torque transmission shaft sleeve, and the position which is separated from the fixed sleeve and the torque transmission shaft sleeve is switched to be meshed with the fixed sleeve. The speed reduction clutch device can realize various clutch switching states of the clutch sleeve, realize more diversified washing working conditions, meet more washing requirements, have better washing effect and improve the use experience of users.

Description

Speed reduction clutch device of washing machine, washing machine and control method of washing machine

Technical Field

The invention relates to the technical field of washing equipment, in particular to a speed reduction clutch device of a washing machine, the washing machine and a control method of the washing machine.

Background

The washing machine, as a household appliance, is gradually becoming an indispensable part of people's life, and the full-automatic pulsator washing machine, as a main type of washing machine, has an increasingly wide application range. The prior full-automatic impeller washing machine generally has the working mode that during washing and rinsing, a driving device drives an impeller of the washing machine to rotate forward and backward through a speed reduction clutch device, and during dehydration, the driving device drives the impeller of the washing machine and a washing barrel to synchronously rotate at high speed through the speed reduction clutch device.

However, with the rapid development of science and technology, the existing full-automatic pulsator washing machine has a more limited improvement of the washing effect of the clothes by simply using a washing mode of pulsator stirring water flow, and therefore, how to increase the washing diversity of the full-automatic pulsator washing machine becomes a technical problem which needs to be solved urgently to improve the washing effect.

Several patents have been proposed to solve this problem, such as the following: 02804912.8 entitled Transmission mechanism for generating bidirectional rotation, washing machine and method for generating bidirectional washing, and related inner tub and agitator, which discloses a transmission mechanism suitable for use in a washing machine for generating bidirectional drive, comprising a power input and two power outputs, one of which is connected to an agitator shaft (10) and rotates the agitator shaft in a first direction; and the other power output end thereof is connected with an inner barrel shaft (11) and rotates the inner barrel shaft in a second direction opposite to the first direction. A washing machine for generating bi-directional washing and a washing method capable of generating bi-directional washing in the washing machine. A pulsator and an inner tub for a washing machine. The patent discloses a transmission mechanism capable of driving a washing machine bidirectionally, and simultaneously discloses a specific structure of the transmission mechanism in the specification, and the content of the specification and the attached drawings shows that the patent solves the problem of single power driving mode of the existing full-automatic pulsator washing machine during washing to a certain extent, but the disclosed transmission mechanism has the problems of complex structure, high manufacturing and assembling difficulty, high manufacturing cost and the like.

For another example, application No.: 201310408108.X, with the name: the invention discloses a full-automatic washing machine, which comprises an outer barrel, an inner barrel, a wave wheel and a driving device, wherein the driving device comprises at least two rotors and at least one stator, one of the rotors is connected with the inner barrel shaft, and the other rotor is connected with the wave wheel shaft; the driving device is a variable frequency direct drive motor, the rotor, the stator, the inner barrel shaft and the impeller shaft are coaxially arranged, the inner barrel shaft is hollow, and the impeller shaft is arranged in the inner barrel shaft; when the washing machine washes, the wave wheel and the inner barrel rotate in the same direction, or rotate in opposite directions, or one of the wave wheel and the inner barrel rotates, and when the washing machine dehydrates, the wave wheel and the inner barrel rotate in the same direction and at the same speed. The washing machine is connected with the inner barrel shaft and the impeller shaft through the two rotors respectively, and the inner barrel and the impeller are driven to rotate through the double rotors respectively, so that the structure reduces the weight, the volume and the cost of a driving system to a great extent, and improves the transmission efficiency and the stability.

From the two published patent applications mentioned above, there are two main concepts to solve the water flow diversity of washing machines: the method comprises the following steps that firstly, a speed reduction clutch device capable of outputting bidirectional power is designed to realize bidirectional washing in the washing process of the washing machine, and the water flow effect is enhanced; and the second mode is to design a driving motor with bidirectional power output, and respectively drive the impeller and the inner barrel to realize bidirectional washing in the washing process of the washing machine, so that the water flow effect is enhanced. The first mode has the defects of complex structure, difficult installation and complex control method of the speed reduction clutch device, and the second mode has the defect of high cost of the driving motor with bidirectional power output.

In view of the above, how to increase the diversity of the washing methods and switch between the washing methods to select the optimal washing method is the technical problem to be solved by the present application.

Disclosure of Invention

The invention provides a speed reduction clutch device capable of realizing combination of multiple washing modes, and particularly adopts the following technical scheme:

the utility model provides a washing machine's speed reduction clutch, includes clutching mechanism, clutching mechanism include separation and reunion cover, the fixed cover of fixed setting, with the synchronous pivoted moment of transfer shaft cover of input shaft, stir the shift fork subassembly of separation and reunion cover reciprocating motion and the shift fork drive arrangement of drive shift fork subassembly motion, shift fork drive arrangement including can be in vertical direction rotatory drive cam, drive cam has the drive convex surface of a plurality of different strokes of shift fork subassembly to drive shift fork subassembly stir the separation and reunion cover with moment of transfer shaft cover engaged with position, with the position of fixed cover, the equal separation of moment of transfer shaft cover, with switch between the position of fixed cover engaged with.

Furthermore, the shifting fork assembly comprises a shifting fork and a shifting fork bracket, the shifting fork bracket is fixedly arranged, and the middle part of the shifting fork is rotatably arranged on the shifting fork bracket;

the fork joint end of the shifting fork is connected to the periphery of the clutch sleeve in a fork mode, the driving end of the shifting fork abuts against the driving convex surface of the driving cam, and the driving cam drives the shifting fork to shift the clutch sleeve to reciprocate in the rotating process in the vertical direction.

Furthermore, the driving end of the shifting fork comprises a first driving arm fixedly connected with the fork joint or integrally formed and a second driving arm rotationally connected with the first driving arm, an elastic torsion spring is arranged between the first driving arm and the second driving arm, and the elastic torsion spring acts on the second driving arm to enable the second driving arm to be stopped against a driving convex surface of the driving cam.

Furthermore, a rolling wheel is arranged at one end of the second driving arm, which is abutted against the driving cam, and the rolling wheel is in rolling contact with a driving convex surface of the driving cam.

The speed reducing mechanism comprises an input shaft, a brake wheel capable of rotating in two directions, an output shaft sleeve and an input shaft sleeve which are fixedly connected with the brake wheel respectively, the torque transmission shaft sleeve is fixedly sleeved on the input shaft, and the clutch sleeve is sleeved on the input shaft sleeve and can reciprocate along the axis direction of the input shaft sleeve;

the driving cam is provided with a first driving convex surface for driving the shifting fork assembly to shift the clutch sleeve to move to a position engaged with the transmission shaft sleeve, a second driving convex surface for driving the shifting fork assembly to shift the clutch sleeve to a position separated from the fixed sleeve and the transmission shaft sleeve, and a third driving convex surface for driving the shifting fork assembly to shift the clutch sleeve to move to a position engaged with the fixed sleeve.

Furthermore, the driving cam is a cylindrical body with a horizontal central axis, the base surface of the peripheral wall of the cylindrical body is a first driving surface, a second driving surface protrudes out of the base surface of the peripheral wall for a first stroke, and a third driving surface protrudes out of the base surface of the peripheral wall for a second stroke, the second stroke is greater than the first stroke, and the first driving surface, the second driving surface and the third driving surface respectively press down the shifting fork assembly to stir the clutch sleeve to move to corresponding positions;

preferably, the first driving surface and the second driving surface, the second driving surface and the third driving surface and the first driving surface are in smooth transition connection.

Furthermore, the speed reducing mechanism comprises a shell with an accommodating cavity inside, the brake wheel is arranged in the accommodating cavity of the shell, the shifting fork driving device comprises a cam driving motor fixed on the shell, and a central rotating shaft of the cam driving motor is connected with the driving cam.

Furthermore, a circle of balls capable of rolling freely is arranged on the periphery of the central rotating shaft on the cam driving motor shell, an annular ball groove is arranged on the periphery of the joint of the driving cam and the central rotating shaft, and the balls can roll freely in the annular ball groove.

The second purpose of the present invention is to provide a washing machine with the above speed reduction clutch device, specifically, the following technical solutions are adopted:

the washing machine with the speed reducing clutch device comprises an inner barrel and a wave wheel arranged in the inner barrel, wherein the speed reducing mechanism comprises an output shaft and an output shaft sleeve, the output shaft is fixedly connected with the wave wheel, and the output shaft sleeve is fixedly connected with the inner barrel.

The third invention of the present invention is to provide a control method of the above washing machine, specifically, the following technical solutions are adopted:

a control method of a washing machine including a driving motor for driving a deceleration clutch device, the control method comprising:

the washing machine controls a driving cam of a shifting fork driving device to be in an initial stroke, a clutch sleeve is meshed with a torque transmission shaft sleeve, a brake wheel is synchronously linked with an input shaft to control the action of a driving motor, and a speed reduction clutch device drives a washing machine impeller and an inner barrel to rotate in the same speed and the same direction under a dehydration working condition;

controlling a driving cam of a shifting fork driving device to move to a first stroke, driving a clutch sleeve to move to a position separated from a torque transmission shaft sleeve and a fixed sleeve by the movement of a shifting fork assembly, controlling a driving motor to act when a brake wheel is in a free rotation state, driving a washing machine impeller to reciprocate by a speed reduction clutch device, and carrying out a first washing working condition when an inner barrel is in a free rotation state;

and controlling a driving cam of the shifting fork driving device to move to a second stroke, driving the clutch sleeve to be meshed and connected with the fixed sleeve by the shifting fork assembly, controlling the driving motor to act when the brake wheel is in a braking state, and driving the washing machine impeller to reciprocate by the speed reduction clutch device to carry out a second washing working condition.

The speed reduction clutch device can realize various clutch switching states of the clutch sleeve, realize more diversified washing working conditions, meet more washing requirements, have better washing effect and improve the use experience of users.

The driving cam of the speed reduction clutch device is provided with at least three driving surfaces with different strokes which are matched with the shifting fork assembly so as to shift the shifting fork assembly to have at least three moving positions, thereby realizing at least three clutch states of a clutch sleeve and correspondingly providing at least three washing working conditions: the washing machine can provide the existing full-automatic washing working condition, the washing barrel is fixed and the impeller rotates forwards and backwards under the full-automatic washing working condition; the washing machine can also provide a hand rubbing type washing working condition, the washing barrel freely rotates under the hand rubbing type washing working condition, and the impeller rotates forwards and backwards; and providing dewatering condition, and rotating the washing tub and the impeller at the same speed and the same direction at high speed.

Therefore, the washing machine adopting the speed reduction clutch device can adopt various combined washing modes, various water flows and circularly crossed washing modes to operate in the whole washing process. The washing machine has the advantages that the washing is more sufficient, the clothes are cleaner, the clothes are prevented from being wound, and the use experience of a user of the washing machine is improved.

Drawings

FIG. 1 is a schematic view showing a structure of a deceleration clutch device of a washing machine according to an embodiment of the present invention (a dehydration state);

FIG. 2 is a schematic structural view of a deceleration clutch device of a washing machine according to an embodiment of the present invention (a washing condition state by hand rubbing);

FIG. 3 is a schematic structural view of a deceleration clutch device of a washing machine according to an embodiment of the present invention (in a normal full-automatic washing condition state);

FIG. 4 is a schematic diagram of the matching between the fork driving device and the fork assembly according to the embodiment of the present invention (dehydration condition state);

FIG. 5 is a schematic diagram of the matching between the fork driving device and the fork assembly according to the embodiment of the present invention (the washing condition state by hand);

FIG. 6 is a schematic diagram of the matching between the fork driving device and the fork assembly according to the embodiment of the present invention (in a general full-automatic washing condition);

FIG. 7 is a schematic structural diagram of a fork driving apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic view of the structure of a drive cam according to an embodiment of the present invention;

FIG. 9 is a schematic view of the structure of a driving unit according to an embodiment of the present invention;

FIG. 10 is a schematic view of a fork according to an embodiment of the present invention.

Reference numbers in the drawings illustrate: 1-output shaft 2-output shaft sleeve 3-upper end shell 4-brake lever 5-lower end shell 6-shift fork support 7-brake band 8-fixed sleeve 9-clutch sleeve 10-torque shaft sleeve 11-input shaft 12-motor fastening nut 13-input shaft sleeve 14-shift fork 15-shift fork drive device 16-clutch pressure spring 17-fork joint end 18-drive end 19-cam drive motor 20-drive cam 21-wire insert 22-central rotating shaft 23-annular ball groove 24-ball 25-support mounting hole 26-first drive arm 27-second drive arm 28-rolling wheel 29-rolling wheel shaft 30-spring hoop 31-rotating pin shaft 32-elastic torsion spring.

Detailed Description

The speed reduction clutch device of a washing machine, the washing machine and the control method thereof according to the present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1 to 10, the present embodiment provides a speed reduction clutch device for a washing machine, which includes a clutch mechanism, the clutch mechanism includes a clutch sleeve 9, a fixed sleeve 8, a torque shaft sleeve 10 rotating synchronously with an input shaft 11, a fork assembly for shifting the clutch sleeve 9 to reciprocate, and a fork driving device 15 for driving the fork assembly to move, the fork driving device 15 includes a driving cam 20 capable of rotating in a vertical direction, the driving cam 20 has a plurality of driving convex surfaces for driving the fork assembly to shift the clutch sleeve 9 between a position engaged with the torque shaft sleeve 10, a position disengaged with both the fixed sleeve 8 and the torque shaft sleeve 10, and a position engaged with the fixed sleeve 8.

This embodiment speed reduction clutch can realize the multiple separation and reunion switching state of separation and reunion cover, realizes more diversified washing operating mode, satisfies more washing demands, has better washing effect, promotes user's use and experiences.

As an implementation manner of this embodiment, the driving cam 20 of the speed reduction clutch device of this embodiment has at least three driving surfaces with different strokes, which are engaged with the fork assembly, so as to shift the fork assembly to have at least three movement positions, thereby implementing at least three clutch states of the clutch sleeve 9, and correspondingly providing at least three washing conditions: the washing machine can provide the existing full-automatic washing working condition, the washing barrel is fixed and the impeller rotates forwards and backwards under the full-automatic washing working condition; the washing machine can also provide a hand rubbing type washing working condition, the washing barrel freely rotates under the hand rubbing type washing working condition, and the impeller rotates forwards and backwards; and providing dewatering condition, and rotating the washing tub and the impeller at the same speed and the same direction at high speed.

Therefore, the washing machine adopting the speed reduction clutch device of the embodiment can adopt various combined washing modes, various water flows and circularly crossed washing modes to operate in the whole washing process. The washing machine has the advantages that the washing is more sufficient, the clothes are cleaner, the clothes are prevented from being wound, and the use experience of a user of the washing machine is improved.

Further, the speed reduction clutch device of the washing machine of the embodiment comprises a speed reduction mechanism, the speed reduction mechanism comprises an input shaft 11, a brake wheel capable of rotating in two directions, an output shaft sleeve 2 and an input shaft sleeve 13 which are fixedly connected with the brake wheel respectively, the clutch mechanism comprises a fixed sleeve 8 fixedly arranged outside the input shaft sleeve 13 and a torque transmission shaft sleeve 10 fixedly arranged on the input shaft 11, and a clutch sleeve 9 is sleeved on the input shaft sleeve 13 and can reciprocate along the axis direction of the input shaft sleeve 13.

The brake band of the existing speed reduction clutch device can only brake the brake wheel in one direction, the other direction of the brake wheel is limited by the one-way bearing, the brake wheel of the embodiment can rotate in two directions, and meanwhile, in order to ensure the realization of the washing mode of the rotation of the single-impeller wheel, the brake wheel also needs to be braked in two directions, therefore, the speed reduction clutch device of the embodiment realizes the locking of the input shaft sleeve 13 through the fixedly arranged fixed sleeve 8 which can be meshed with the clutch sleeve 9 according to the structural characteristics of the reciprocating motion of the clutch sleeve 9 of the clutch mechanism, and meanwhile, the brake wheel is also braked.

The driving cam 20 of this embodiment has a first driving convex surface for driving the shifting fork assembly to shift the clutch sleeve 9 to the position engaged with the torque transmission shaft sleeve 10, a second driving convex surface for driving the shifting fork assembly to shift the clutch sleeve 9 to the position separated from the fixed sleeve 8 and the torque transmission shaft sleeve 10, and a third driving convex surface for driving the shifting fork assembly to shift the clutch sleeve 9 to the position engaged with the fixed sleeve 8.

This embodiment is through drive cam 20 at the first drive convex surface of rotation in-process, second drive convex surface and third drive convex surface butt shift fork assembly respectively, realize drive shift fork assembly and stir separation and reunion cover 9, separation and reunion drive arrangement 15 realizes that the mode that separation and reunion cover 9 motion switched the engaged state is simple, accurate, and when drive cam 20 reachs the position that definite drive convex surface supported and pressed shift fork assembly, can keep the butt to shift fork assembly, separation and reunion cover 9 engaged state is more stable.

Specifically, the driving cam 20 is a cylindrical body with a horizontally arranged central axis, a base surface of the peripheral wall of the cylindrical body is a first driving surface, a second driving surface protruding out of a first stroke of the base surface of the peripheral wall, and a third driving surface protruding out of a second stroke of the base surface of the peripheral wall, wherein the second stroke is larger than the first stroke, and the first driving surface, the second driving surface and the third driving surface respectively press down the shifting fork assembly to shift the clutch sleeve to move to corresponding positions.

Preferably, the first driving surface and the second driving surface, the second driving surface and the third driving surface and the first driving surface are in smooth transition connection. Thus, during the rotation of the rotary drive cam 20, the first, second and third drive surfaces 26, 27, 28 are switched into abutment with the fork assembly, and the clutch switching process is more smooth.

As a preferable mode of the present embodiment, the fork assembly of the present embodiment includes a fork 14 and a fork holder 6, the fork holder 6 is fixedly disposed, a holder mounting hole 25 is formed in the middle of the fork 14, and the fork 14 is rotatably mounted on the fork holder 6 through the holder mounting hole 25.

In the embodiment, the forked end 17 of the shifting fork 14 is forked on the periphery of the clutch sleeve 9, the driving end 18 of the shifting fork 14 abuts against the driving convex surface of the driving cam 20, and the driving cam 20 drives the shifting fork 14 to shift the clutch sleeve 9 to reciprocate in the process of rotating in the vertical direction.

As shown in fig. 10, the driving end 18 of the shift fork 14 of the present embodiment includes a first driving arm 26 fixedly connected to or integrally formed with the fork end 17 and a second driving arm 27 rotatably connected to the first driving arm 26, an elastic torsion spring 32 is disposed between the first driving arm 26 and the second driving arm 27, and the elastic torsion spring 32 acts on the second driving arm 27 to stop against the driving convex surface of the driving cam 20.

The second drive arm 27 of the present embodiment functions as follows: when the clutch is converted into the process of the ordinary full-automatic washing working condition, the shifting fork 14 moves upwards, the shifting fork 14 shifts the clutch sleeve 9 to move upwards, the teeth of the clutch sleeve 9 and the teeth of the fixed sleeve 8 are just in contact and opposite, when the clutch is not engaged, the shifting fork 14 still moves upwards, the shifting fork 14 can bear large resistance, the second driving arm 27 overcomes the force of the elastic torsion spring 32 to move upwards, the resistance of the shifting fork 14 is buffered, and the service life is prolonged.

The first driving arm 26 and the second driving arm 27 of this embodiment are rotatably connected by a spring clip 30 and a rotating pin 31.

Further, in the present embodiment, a rolling wheel 28 is disposed at one end of the second driving arm 27 abutting against the driving cam 20, and the rolling wheel 28 is in rolling contact with the driving convex surface of the driving cam 20. The roller wheel 28 of this embodiment is mounted on a roller wheel axle 29 on the second drive arm 27, said roller wheel 28 being rotatably mounted on the roller wheel axle 29.

The speed reducing mechanism of the embodiment comprises a shell with an accommodating chamber inside, the brake wheel is arranged in the accommodating chamber of the shell, the shifting fork driving device 15 comprises a cam driving motor 19 fixed on the shell, and a central rotating shaft 22 of the cam driving motor 19 is connected with the driving cam 20. The cam driving motor 19 has two strokes for driving the driving cam 20 to rotate to the positions where the first driving surface and the second driving surface are engaged with the shift fork 14, respectively, and each stroke can be electrically disconnected from the holding position. Preferably, the cam driving motor is a stepping motor.

The casing of this embodiment includes upper end shell 3 and with upper end shell 3 fixed connection's lower extreme shell 5, fork support 6 and cam drive motor 19 all fixed mounting on lower extreme shell 5. In addition, the fixing sleeve 8 of the present embodiment is also fixedly mounted on the lower end shell 5.

The cam driving motor 19 of the present embodiment can also be fixed at the bottom of the outer tub of the washing machine.

As an embodiment of the present embodiment, the fork holder 14 and the fixing sleeve 8 may be integrally formed.

As shown in fig. 8 and 9, as an embodiment of the present embodiment, a circle of balls 24 capable of rolling freely is disposed on the outer circumference of the central rotating shaft 22 on the housing of the cam driving motor 19 of the present embodiment, an annular ball groove 23 is disposed on the outer circumference of the connecting portion of the driving cam 20 and the central rotating shaft 22, and the balls 24 can roll freely in the annular ball groove 23. Thus, the shifting fork 14 applies a certain radial force to the driving cam 20, which may cause the driving cam 20 to run unsmoothly, and affect the service life of the driving mechanism.

The embodiment also provides a washing machine with the speed reduction clutch device, which comprises an inner barrel and a wave wheel arranged in the inner barrel, wherein the speed reduction mechanism comprises an output shaft 1 and an output shaft sleeve 2, the output shaft 1 is fixedly connected with the wave wheel, and the output shaft sleeve 2 is fixedly connected with the inner barrel.

Furthermore, the washing machine of the embodiment further comprises an outer barrel, a water outlet is formed in the outer barrel, a water discharge valve for controlling the opening and closing of the water outlet and a water discharge motor for pulling the water discharge valve to act are installed at the bottom of the outer barrel, the speed reduction clutch device of the washing machine comprises a brake wheel, a brake belt 7 is arranged on the periphery of the brake wheel, one end of the brake belt 7 is connected with the brake rod 4, a brake rod torsion spring is arranged on the brake rod 4, and the water discharge motor is further connected with the brake rod 7.

The drain motor of the present embodiment has two strokes: the drainage motor is pulled open for a first stroke, the brake rod 4 is pulled open, the brake belt 7 is released, the brake wheel is not braked, and the drainage valve does not act (does not drain); the drainage motor is pulled open for the second stroke, the brake rod 4 and the drainage valve are both pulled open, the brake wheel is not braked, and the drainage valve drains water.

The drain valve of this embodiment has the drain valve pull rod, drainage motor be connected with the drain valve pull rod. The drain valve pull rod is connected with the drain motor through the extension spring, the extension spring extends in the process that the drain motor carries out the first traction stroke, the drain valve pull rod does not act, and the drain valve keeps a closed state.

In order to realize the fixing of the fixing sleeve 8, the fixing sleeve 8 of the present embodiment includes an annular body fixed to the lower end shell 5, the annular body is provided with washing engaging teeth, one end of the clutch sleeve 9 close to the fixing sleeve 8 is provided with upper engaging teeth, and the upper engaging teeth of the clutch sleeve 9 are engaged with the washing engaging teeth of the fixing sleeve 8 to lock the input shaft sleeve 13.

The outer periphery of the input shaft 11 in this embodiment is provided with an external spline, the torque transmission shaft sleeve 10 is provided with an internal spline, the internal spline of the torque transmission shaft sleeve 10 is embedded with the external spline of the input shaft 11, and the torque transmission shaft sleeve 10 rotates synchronously with the input shaft 11.

The input shaft 11 of this embodiment is sleeved with a motor lock nut 12 for fixedly connecting the input shaft with a rotor of a driving motor, and a damping pad is disposed on an end face of the torque transmission shaft sleeve 10, which is close to the driving motor.

The brake wheel of the embodiment comprises a brake wheel body with an opening accommodating cavity and a brake wheel shaft fixedly connected with the opening end of the brake body, and a bidirectional rotating bearing is arranged between the brake wheel shaft and the shell, so that the brake wheel of the embodiment can rotate bidirectionally.

The input shaft sleeve 13 of this embodiment is sleeved with a clutch compression spring 16 for elastically restoring and engaging the clutch sleeve 9, and the clutch compression spring 16 is disposed between the clutch sleeve 9 and the bottom end surface of the lower end housing 5.

The present embodiment also provides a control method of a washing machine including a driving motor for driving a deceleration clutch device, the control method including:

the washing machine controls the driving cam of the shifting fork driving device to be in an initial stroke, the clutch sleeve is meshed with the torque transmission shaft sleeve, the brake wheel is synchronously linked with the input shaft to control the driving motor to act, and the speed reduction clutch device drives the washing machine impeller and the inner barrel to rotate in the same speed and the same direction under the dehydration working condition.

At this time, the drain motor is pulled open for the second stroke, and the brake lever 4 and the drain valve are both pulled open.

The control controls the driving cam of the shifting fork driving device to move to a first stroke, the shifting fork assembly moves to drive the clutch sleeve to move to a position separated from both the torque transmission shaft sleeve and the fixed sleeve, the brake wheel is in a free rotation state, the control drives the motor to act, the speed reduction clutch device drives the impeller of the washing machine to rotate in a reciprocating mode, the inner barrel is in a free rotation state, and a first washing working condition is carried out.

At this time, the drain motor is pulled off by the first stroke, the brake lever is pulled off, and the drain valve is not operated (does not drain).

And controlling a driving cam of the shifting fork driving device to move to a second stroke, driving the clutch sleeve to be meshed and connected with the fixed sleeve by the shifting fork assembly, controlling the driving motor to act when the brake wheel is in a braking state, and driving the washing machine impeller to reciprocate by the speed reduction clutch device to carry out a second washing working condition.

At this time, the drain motor is not pulled, and the brake lever and the drain valve are not actuated (no water is drained).

The brake wheel is in brake state when the existing full-automatic washing machine washes, the deceleration clutch device can only drive the impeller to rotate, and the brake wheel can rotate but only keep one-way rotation under the limitation of the one-way bearing when the washing machine dehydrates, so that the inner barrel can not rotate or the rotation mode is single even if the inner barrel rotates in the washing process, which is not beneficial to forming diversified washing modes.

The brake wheel of the speed reduction clutch device of the embodiment can rotate in two directions, so that the inner barrel is driven to have more rotating modes, and more washing modes can be provided theoretically: the washing mode that the clutch driving device is controlled to drive the clutch sleeve to be meshed and fixed with the fixed sleeve, the input shaft sleeve is locked, the brake wheel is also locked, and the speed reduction clutch device singly drives the impeller to rotate; the clutch driving device is controlled to drive the clutch sleeve to be separated from the fixed sleeve and not to be meshed and fixed with the torque transmission shaft sleeve, the input shaft sleeve is unlocked, the brake wheel can freely rotate in two directions along with the input shaft sleeve, and the speed reduction clutch device singly drives the impeller to rotate and the inner barrel to freely rotate.

Therefore, the washing machine of the present embodiment may provide at least three washing conditions: the washing machine can provide the existing full-automatic washing working condition, the washing barrel is fixed and the impeller rotates forwards and backwards under the full-automatic washing working condition; the washing machine can also provide a hand rubbing type washing working condition, the washing barrel freely rotates under the hand rubbing type washing working condition, and the impeller rotates forwards and backwards; and providing dewatering condition, and rotating the washing tub and the impeller at the same speed and the same direction at high speed. In the whole washing process of the washing machine, various combined washing modes, various water flows and circularly crossed washing modes can be adopted, so that the washing is more sufficient, the clothes are cleaner, the clothes are prevented from being wound, and the use experience of a user is improved.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a washing machine's speed reduction clutch, its characterized in that, includes clutching mechanism, clutching mechanism include separation and reunion cover, the fixed cover of fixed setting, with the synchronous pivoted moment of transfer shaft cover of input shaft, stir the shift fork subassembly of separation and reunion cover reciprocating motion and the shift fork drive arrangement of drive shift fork subassembly motion, shift fork drive arrangement including can rotate the drive cam in vertical direction, drive cam has the drive convex surface of a plurality of different strokes of shift fork subassembly to drive shift fork subassembly stir the separation and reunion cover in the position with moment of transfer shaft cover engaged with, with the position of fixed cover, the equal separation of moment of transfer shaft cover, with switch between the position of fixed cover engaged with.

2. The deceleration clutch device of a washing machine according to claim 1, wherein the fork assembly includes a fork and a fork holder, the fork holder is fixedly disposed, and a middle portion of the fork is rotatably mounted on the fork holder;

the fork joint end of the shifting fork is connected to the periphery of the clutch sleeve in a fork mode, the driving end of the shifting fork abuts against the driving convex surface of the driving cam, and the driving cam drives the shifting fork to shift the clutch sleeve to reciprocate in the rotating process in the vertical direction.

3. The decelerating clutch device for the washing machine as claimed in claim 2, wherein the driving end of the shift fork includes a first driving arm fixedly connected to or integrally formed with the fork joint and a second driving arm rotatably connected to the first driving arm, and an elastic torsion spring is disposed between the first driving arm and the second driving arm and acts on the second driving arm to stop against the driving convex surface of the driving cam.

4. The deceleration clutch apparatus of washing machine as claimed in claim 3, wherein a rolling wheel is provided on an end of the second driving arm abutting against the driving cam, the rolling wheel being in rolling contact with the driving convex surface of the driving cam.

5. The speed reduction clutch device of the washing machine according to any one of claims 1 to 4, characterized by comprising a speed reduction mechanism, wherein the speed reduction mechanism comprises an input shaft, a brake wheel capable of rotating in two directions, an output shaft sleeve and an input shaft sleeve which are respectively and fixedly connected with the brake wheel, the torque transmission shaft sleeve is fixedly sleeved on the input shaft, and the clutch sleeve is sleeved on the input shaft sleeve and can reciprocate along the axial direction of the input shaft sleeve;

the driving cam is provided with a first driving convex surface for driving the shifting fork assembly to shift the clutch sleeve to move to a position engaged with the transmission shaft sleeve, a second driving convex surface for driving the shifting fork assembly to shift the clutch sleeve to a position separated from the fixed sleeve and the transmission shaft sleeve, and a third driving convex surface for driving the shifting fork assembly to shift the clutch sleeve to move to a position engaged with the fixed sleeve.

6. The decelerating clutch device of a washing machine according to claim 5, characterized in that the driving cam is a cylindrical body with a horizontal central axis, the base surface of the peripheral wall of the cylindrical body is a first driving surface, a second driving surface protruding a first stroke of the base surface of the peripheral wall, and a third driving surface protruding a second stroke of the base surface of the peripheral wall, wherein the second stroke is larger than the first stroke, and the first driving surface, the second driving surface and the third driving surface respectively press down the shifting fork assembly to shift the clutch sleeve to move to corresponding positions;

preferably, the first driving surface and the second driving surface, the second driving surface and the third driving surface and the first driving surface are in smooth transition connection.

7. The decelerating clutch device for a washing machine as claimed in claim 5, wherein the decelerating mechanism includes a housing having a receiving chamber therein, the brake drum is disposed in the receiving chamber of the housing, the fork driving unit includes a cam driving motor fixed to the housing, and a central shaft of the cam driving motor is connected to the driving cam.

8. The decelerating clutch device for a washing machine as claimed in claim 7, wherein a ring of balls capable of freely rolling is provided on an outer circumference of the central rotating shaft of the cam driving motor housing, and an annular ball groove is provided on an outer circumference of a junction of the driving cam and the central rotating shaft, the balls being capable of freely rolling in the annular ball groove.

9. A washing machine having the deceleration clutch device according to any one of claims 1 to 8, comprising an inner tub and a pulsator disposed in the inner tub, wherein the deceleration mechanism comprises an output shaft and an output hub, the output shaft is fixedly connected to the pulsator, and the output hub is fixedly connected to the inner tub.

10. A control method of a washing machine according to claim 9, wherein the washing machine includes a driving motor for driving the speed reduction clutch device, the control method comprising:

the washing machine controls a driving cam of a shifting fork driving device to be in an initial stroke, a clutch sleeve is meshed with a torque transmission shaft sleeve, a brake wheel is synchronously linked with an input shaft to control the action of a driving motor, and a speed reduction clutch device drives a washing machine impeller and an inner barrel to rotate in the same speed and the same direction under a dehydration working condition;

controlling a driving cam of a shifting fork driving device to move to a first stroke, driving a clutch sleeve to move to a position separated from a torque transmission shaft sleeve and a fixed sleeve by the movement of a shifting fork assembly, controlling a driving motor to act when a brake wheel is in a free rotation state, driving a washing machine impeller to reciprocate by a speed reduction clutch device, and carrying out a first washing working condition when an inner barrel is in a free rotation state;

and controlling a driving cam of the shifting fork driving device to move to a second stroke, driving the clutch sleeve to be meshed and connected with the fixed sleeve by the shifting fork assembly, controlling the driving motor to act when the brake wheel is in a braking state, and driving the washing machine impeller to reciprocate by the speed reduction clutch device to carry out a second washing working condition.

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