CN104790178A - Reduction clutch for washing machine and washing machine - Google Patents

Abstract

The invention discloses a deceleration clutch for a washing machine and a washing machine. The deceleration clutch includes an input shaft, an input shaft sleeve, a brake wheel, a speed reducer, a dehydration shaft, an output shaft, a clutch device and a casing. The input shaft sleeve is set on the input shaft, and the dehydration The shaft sleeve is installed on the output shaft, and the reducer is installed in the inner cavity of the brake wheel. The input shaft, input shaft sleeve, brake wheel and output shaft are respectively connected with the reducer. The reducer includes two sets of planetary gear trains, respectively the first The planetary gear train and the second planetary gear train, the input shaft sleeve is connected with the wheel frame of the second planetary gear train as a whole, the dehydration shaft is connected with the brake wheel as a whole; in the washing state, the clutch device brakes the input shaft sleeve, and the control The output shaft and the dehydration shaft rotate in opposite directions. In the dehydration state, the clutch device releases the brake of the input sleeve, and controls the output shaft and the dehydration shaft to rotate in the same direction. The invention has the characteristics of simple and compact structure, low manufacturing cost, safe and reliable transmission, high efficiency, long service life and low noise.

Description

Washing machine deceleration clutch and washing machine

technical field

The invention relates to the field of washing machines, in particular to a washing machine deceleration clutch 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 technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a deceleration clutch for washing machines with simple and compact structure, low manufacturing cost, safe and reliable transmission, high efficiency, long service life and low noise.

Another object of the present invention is to provide a washing machine with the deceleration clutch.

In order to solve the above technical problems, the basic idea of the technical solution adopted by the present invention is: a washing machine deceleration clutch, including: input shaft, input shaft sleeve, brake wheel, speed reducer, dehydration shaft, output shaft, clutch device and housing, input The shaft sleeve is set on the input shaft, the dehydration shaft is set on the output shaft, and the reducer is installed in the inner cavity of the brake wheel. The input shaft, input shaft sleeve, brake wheel and output shaft are respectively connected with the reducer. The above-mentioned reducer includes two sets of planetary gear trains, which are respectively the first planetary gear train and the second planetary gear train. The input shaft sleeve is connected as a whole with the wheel frame of the second planetary gear train. The dehydration shaft It is connected with the brake wheel as a whole; in the washing state, the clutch device brakes the input shaft sleeve, and the output shaft and the dehydration shaft are controlled to rotate in opposite directions. The shafts rotate in one direction in the same direction.

Further, the output shaft is in transmission connection with the input shaft through the first planetary gear train, and the dehydration shaft is in transmission connection with the output shaft through the brake wheel and the second planetary gear train.

Further, the first planetary gear train is a deceleration transmission chain between the input shaft and the output shaft, and the second planetary gear train is a deceleration transmission chain between the output shaft and the brake wheel and the direction of rotation is opposite to each other. chain.

Further, the first planetary gear train is mainly composed of a first sun gear, a first internal gear, a first planetary gear, and a first planetary gear frame. The first sun gear is installed on the input shaft, and the first internal gear is set In the brake wheel chamber, the first planetary gears are evenly distributed on the same circumference of the first planetary gear carrier, the first planetary gears mesh with the first sun gear and the first internal gear at the same time, and the output shaft is connected with the first planetary gear carrier as One.

Further, the second planetary gear train is mainly composed of a second sun gear, a second internal gear, a second planetary gear, and a second planetary carrier, the second internal gear is fixed in the inner cavity of the brake wheel, and the second The sun gear is installed on the output shaft. The second planetary gears are evenly distributed on the same circumference of the second planetary gear carrier. The second planetary gears mesh with the second sun gear and the second internal gear at the same time. Connect as one.

Further, by changing the diameter, modulus and number of teeth of the first planetary gear and the second planetary gear, the reduction transmission ratios of the two planetary gear trains are respectively changed.

Further, the number of the first planetary gears uniformly distributed on the same circumference of the first planetary gear carrier is 2-4; the number of the second planetary gears uniformly distributed on the same circumference of the second planetary gear carrier The quantity is 2-4 pieces.

Further, the clutch device includes a dehydration pin installed on the lower end of the brake wheel, a clutch sleeve installed on the input shaft sleeve and rotating integrally with the input shaft sleeve, a brake pin and a driving clutch sleeve installed on the lower end of the housing respectively connected with the dehydration Pin, brake pin connection/disconnection drive unit;

In the washing state, the drive unit controls the clutch sleeve to be connected to the brake pin and disconnected from the dehydration pin; in the dehydration state, the drive unit controls the clutch sleeve to be connected to the dehydration pin and disconnected from the brake pin.

Or, the above alternative solution is that the clutch device includes a dehydration pin installed on the input shaft, a clutch sleeve installed on the input shaft sleeve and rotating integrally with the input shaft sleeve, a brake pin installed on the lower end of the casing, and a driving clutch Set of drive units connected/disconnected with the dehydration pin and brake pin respectively;

In the washing state, the drive unit controls the clutch sleeve to be connected to the brake pin and disconnected from the dehydration pin; in the dehydration state, the drive unit controls the clutch sleeve to be connected to the dehydration pin and disconnected from the brake pin.

The washing machine of the present invention comprises an outer tub for holding water, an inner tub coaxially arranged in the outer tub for placing clothes, a pulsator coaxially arranged at the bottom of the inner tub, and a drive motor, the input shaft is connected to the drive motor, and the output shaft It is connected with the pulsator, and the dehydration shaft is connected with the inner tub. During washing, the deceleration transmission of the deceleration clutch makes the pulsator and the inner tub rotate in opposite directions. When dehydrating, the pulsator and the inner tub rotate in the same direction and at the same speed.

Further, the diameter, module and number of teeth of the first planetary gear and the second planetary gear are determined according to the washing capacity, energy consumption and washing effect of the washing machine.

Further, the drive motor is connected to the input shaft through a belt transmission mechanism, or the drive motor is directly connected to the input shaft by a direct drive motor.

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

The invention provides a high-efficiency, simple and reliable two-way reverse rotation washing deceleration clutch and an application scheme on a washing machine, which improves the transmission efficiency of the washing machine and reduces energy consumption. The deceleration clutch of the present invention has simple structure and high reliability, and improves the performance of the washing machine.

The speed reducer in the speed reduction clutch of the present invention adopts different transmission chains, such as a double planetary gear train, which satisfies the reduction ratio, and the relative reverse rotation of the output shaft, the brake wheel and the dehydration shaft improves the carrying capacity and overcomes the traditional double planetary gear train. The dehydration shaft of the power deceleration clutch is separated from the brake wheel, and the rigidity of the system is poor, and the inner bucket swings in a dehydration state, and the noise is large; thus, the deceleration wheel system has a novel structure, good system rigidity, strong bearing capacity, reliable operation and long service life. , Realize scrubbing the laundry in a stable and ideal water flow, improve the cleaning ratio, reduce energy consumption, reduce or even eliminate the entanglement of the laundry.

The invention further improves the clutch device, so that the clutch mechanism will not fail, has long service life and low noise. The clutch device can completely replace the clutch device using square wire springs, ratchet wheels, ratchets, and brake levers in the past, and the removal of the overrunning clutch can save manufacturing costs.

Description of drawings

Fig. 1 is a schematic diagram of the connection structure of the deceleration clutch of the washing machine of the present invention;

Fig. 2 is a schematic diagram of another connection structure of the deceleration clutch of the washing machine of the present invention;

Notes in the accompanying drawings: 1. Input shaft, 2. Input shaft sleeve, 3. Clutch sleeve, 4. Brake pin, 5. Brake wheel, 6. Dehydration pin, 7. First central gear, 8. First Planetary gear, 9, first internal gear, 10, first planetary gear carrier, 12, dehydration shaft, 13, output shaft, 15, shell, 16, second planetary gear, 17, second internal gear, 18, second Planetary carrier, 19, second sun gear

Detailed ways

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

As shown in Figure 1 and Figure 2, the deceleration clutch of the washing machine according to the present invention includes: input shaft 1, input shaft sleeve 2, brake wheel 5, speed reducer, dehydration shaft 12, output shaft 13, clutch device and housing 15 , the input shaft sleeve 2 is set on the input shaft 1, the dehydration shaft 12 is set on the output shaft 13, the speed reducer is installed in the inner cavity of the brake wheel 5, the input shaft 1, the input shaft sleeve 2, the brake wheel 5 and The output shafts 13 are respectively connected with the speed reducer, and the speed reducer includes two sets of planetary gear trains, namely the first planetary gear train and the second planetary gear train, and the input shaft sleeve 12 is connected with the second planetary gear train The wheel frame is connected as a whole, and the dehydration shaft 12 is connected with the brake wheel 5 as a whole; in the washing state, the clutch device brakes the input shaft sleeve 2, and the output shaft 13 and the dehydration shaft 12 are controlled to rotate in opposite directions. In the dehydration state, the clutch device releases the brake of the input shaft sleeve 2, and the input shaft sleeve 2 is linked with the brake wheel 5 or the input shaft 1 to control the output shaft 13 and the dehydration shaft 12 to rotate in the same direction and in one direction.

The output shaft 13 is connected to the input shaft 1 through the first planetary gear train, and the dehydration shaft 12 is connected to the output shaft 13 through the brake wheel 5 and the second planetary gear train; the first planetary gear The second planetary gear train is a deceleration transmission chain between the input shaft 1 and the output shaft 13, and the second planetary gear train is a transmission chain in which the speed reduction between the output shaft 13 and the brake wheel 5 is opposite to each other.

Among them, the first planetary gear train is mainly composed of the first sun gear 7, the first inner gear 9, the first planetary gear 8, and the first planetary gear carrier 10. The first sun gear 7 is installed on the input shaft 1, and the first inner gear The gear 9 is located in the chamber of the brake wheel 5, the first planetary gear 8 is evenly distributed on the same circumference of the first planetary carrier 10, and meshes with the first central gear 7 and the first internal gear 9 at the same time, and the output shaft 13 is connected to the first The planetary gear carrier 10 is connected as a whole, and the gear shaft of the first planetary gear 8 is installed on the first planetary gear carrier 10 .

The second planetary gear train is mainly composed of a second sun gear 19, a second internal gear 17, a second planetary gear 16, and a second planetary carrier 18. The second internal gear 17 is fixed in the inner chamber of the brake wheel 5, and the second The central gear 19 is installed on the output shaft 13, the second planetary gear 16 is evenly distributed on the same circumference of the second planetary gear carrier 18, and meshes with the second central gear 19 and the second internal gear 17 at the same time, the input shaft sleeve 2 and the second The planetary gear carrier 18 is connected as a whole, and the gear shaft of the second planetary gear 16 is mounted on the second planetary gear carrier 18 . The first inner gear 9 of the first planetary gear train is fixedly mounted on the second planetary gear carrier 18 of the second planetary gear train.

The number of the first planetary gears 8 uniformly distributed on the same circumference of the first planetary gear carrier 10 described in the present invention is 2-4; The number of gears 16 is 2-4. By changing the diameter, modulus and number of teeth of the first planetary gear 8 and the second planetary gear 16, the reduction transmission ratios of the two planetary gear trains can be changed respectively.

Embodiment one

As shown in Figure 1, the clutch device described in this embodiment includes a dehydration pin 6 installed on the lower end of the brake wheel 5, a clutch sleeve 3 installed on the input shaft sleeve 2 and rotating integrally with the input shaft sleeve, and installed on the lower end of the housing 15. The brake pin 4 and the driving clutch sleeve 3 are respectively connected to/disconnected from the dehydration pin 6 and the brake pin 4;

In the washing state, the drive unit controls the clutch sleeve 3 to be connected to the brake pin 4 and disconnected from the dehydration pin 6 . In the dehydration state, the drive unit controls the clutch sleeve 3 to be connected to the dehydration pin 6 and to be disconnected from the brake pin 4 .

Embodiment two

As shown in Figure 2, the clutch device described in this embodiment includes a dehydration pin 6 installed on the input shaft 1, a clutch sleeve 3 installed on the input shaft sleeve 2 and rotating integrally with the input shaft sleeve, and a clutch sleeve installed at the lower end of the housing 15. The driving unit that the movable pin 4 and the driving clutch sleeve 3 are connected/disconnected with the dehydration pin 6 and the brake pin 4 respectively;

In the washing state, the drive unit controls the clutch sleeve 3 to be connected to the brake pin 4 and disconnected from the dehydration pin 6 . In the dehydration state, the drive unit controls the clutch sleeve 3 to be connected to the dehydration pin 6 and to be disconnected from the brake pin 4 .

Embodiment Three

In the above embodiment, the clutch sleeve 3 is slidably installed on the input shaft sleeve 2 up and down, and can rotate integrally with the input shaft sleeve; the clutch sleeve 3 is controlled by the drive unit to slide up and down to be splined with the dehydration pin 6 and the brake pin 4, When disconnected, the drive unit includes a return spring and a device to drive the action of the clutch sleeve. The device is electromagnetically driven or mechanically driven, such as a shift fork structure.

Embodiment four

The washing machine of the present invention comprises an outer tub for holding water, an inner tub coaxially arranged in the outer tub to place clothes, a pulsator coaxially arranged at the bottom of the inner tub, and a drive motor. The input shaft 1 is connected to the drive motor, and the output shaft 13 is connected to the pulsator. The wheel is connected, and the dehydration shaft 12 is connected with the inner tub. When washing, the deceleration transmission of the deceleration clutch makes the pulsator and the inner tub rotate in opposite directions. The washing machine is an existing fully automatic pulsator washing machine, and its structure is not shown again.

The washing machine of the present invention realizes the conversion of the washing mode and the dehydration mode through the connection and disengagement conversion between the clutch sleeve 3 in the clutch device, the brake pin 4 and the dehydration pin 6 . When the clutch sleeve 3 is connected to the brake pin 4 and disconnected from the dehydration pin 6, the washing machine is in the washing condition. At this time, the drive motor rotates repeatedly in both directions, and the power is transmitted to the output shaft 13 through the input shaft 1 and the first planetary gear train deceleration. Rotation, the output shaft 13 is then decelerated and transmitted to the dehydration shaft 12 through the second planetary gear train, so as to realize the bidirectional repeated rotation of the output shaft 13 and the dehydration shaft 12. Specifically, in the washing state, the first planetary gear train is in a free state, the first sun gear 7 drives the first planetary gear 8 to rotate, the first planetary gear 8 rotates and revolves, and then drives the first planetary gear carrier 10 to rotate, and the second The output shaft 13 connected to a planetary gear frame 10 rotates to drive the pulsator to rotate; the output shaft 13 rotates to drive the second central gear 19 to rotate, and then drives the second planetary gear 16 to rotate. Since the clutch sleeve 3 and the brake pin 4 are connected , the second planetary gear train is transformed into a fixed-axis gear train, the second planetary gear train cannot revolve, the rotation of the second planetary gear 16 drives the second internal gear 17 to rotate, and then the brake wheel 5 and the dehydration shaft 12 rotate to drive the inner barrel It rotates oppositely with the wave wheel.

When the clutch sleeve 3 and the brake pin 4 are disconnected and connected to the dehydration pin 6, the washing machine is in the dehydration condition. At this time, the drive motor rotates in one direction according to the set direction. Because the clutch sleeve 3 and the dehydration pin 6 are connected and locked, The input shaft 1, the input shaft sleeve 2, the first planetary gear train, the second planetary gear train, the output shaft 13, the dehydration shaft 12 and the automatic combination become a whole, enter the dehydration working condition, and the inner barrel is connected with the dehydration shaft 12 to start the centrifugal dehydration rotation.

Of course, the present invention is not limited to the above-mentioned examples. The technical solutions that are obvious to those skilled in the art can make various modifications and changes to the present invention without departing from the spirit or scope of the present invention. range of equivalent replacements.

Claims (10)

1. a decelerating clutch of washing machine, comprise: power shaft (1), input axle sleeve (2), braked wheel (5), decelerator, dehydrating shaft (12), output shaft (13), arrangement of clutch and shell (15), input axle sleeve (2) is sleeved on power shaft (1), dehydrating shaft (12) is sleeved on output shaft (13), decelerator is arranged on braked wheel (5) inner chamber, it is characterized in that: described power shaft (1), input axle sleeve (2), braked wheel (5) is connected with decelerator respectively with output shaft (13), described decelerator comprises two cover planet circular systems, be respectively first planet train and the second planet circular system, described input axle sleeve (2) is integrally connected with the wheel carrier of the second planet circular system, described dehydrating shaft (12) and braked wheel (5) are integrally connected, washing state, arrangement of clutch braking input axle sleeve (2), controls output shaft (13) and dehydrating shaft (12) reverse Double-directional rotary each other, dewatering state, input axle sleeve (2) braking removed by arrangement of clutch, controls output shaft (13) and dehydrating shaft (12) one-directional rotation in the same way.

2. decelerating clutch of washing machine according to claim 1, it is characterized in that: described output shaft (13) is in transmission connection by first planet train and power shaft (1), described dehydrating shaft (12) is in transmission connection by braked wheel (5), the second planet circular system and output shaft (13).

3. decelerating clutch of washing machine according to claim 1 and 2, it is characterized in that: described first planet train is the deceleration transmission chain between power shaft (1) and output shaft (13), the second described planet circular system is deceleration between output shaft (13) with braked wheel (5) and turns to driving-chain contrary each other.

4. decelerating clutch of washing machine according to claim 3, it is characterized in that: described first planet train is primarily of the first central gear (7), first internal gear (9), first planet gear (8), first planet wheel carrier (10) is formed, first central gear (7) is installed on power shaft (1), first internal gear (9) is located in braked wheel (5) chamber, it is circumferentially same that first planet gear (8) is distributed on first planet wheel carrier (10), first planet gear (8) engages with the first central gear (7) and the first internal gear (9) simultaneously, output shaft (13) and first planet wheel carrier (10) connect as one.

5. decelerating clutch of washing machine according to claim 4, it is characterized in that: the second described planet circular system is primarily of the second central gear (19), secondary annulus (17), second planetary gear (16), second planetary wheel carrier (18) is formed, secondary annulus (17) is packed in braked wheel (5) inner chamber, second central gear (19) is installed on output shaft (13), it is circumferentially same that second planetary gear (16) is distributed on the second planetary wheel carrier (18), second planetary gear (16) engages with the second central gear (19) and secondary annulus (17) simultaneously, input axle sleeve (2) and the second planetary wheel carrier (18) connect as one.

6. decelerating clutch of washing machine according to claim 5, is characterized in that: by changing first planet gear (8) and the diameter of the second planetary gear (16), modulus and the number of teeth, to change the step-down ratio of two planet circular systems respectively.

7. decelerating clutch of washing machine according to claim 5, is characterized in that: the described quantity being distributed on the same first planet gear (8) circumferentially of first planet wheel carrier (10) is 2-4; The described quantity being distributed on same the second planetary gear (16) circumferentially of the second planetary wheel carrier (18) is 2-4.

8. decelerating clutch of washing machine according to claim 1, is characterized in that: described arrangement of clutch comprise be installed on braked wheel (5) lower end dehydration pin (6), be installed on input axle sleeve (2) and with the clutch cover (3) of input axle sleeve unitary rotation, be installed on shell (15) lower end banking pin (4) and drives clutch cover (3) sell with dehydration respectively (6), banking pin (4) even/driver element that breaks;

Washing state, driver element controls clutch cover (3) and is connected with banking pin (4) and sells (6) disconnect with dehydration, dewatering state, and driver element control clutch cover (3) is sold (6) and is connected and disconnects with banking pin (4) with dewatering.

9. decelerating clutch of washing machine according to claim 1, is characterized in that: described arrangement of clutch comprises the dehydration pin (6) be installed on power shaft (1), be installed on input axle sleeve (2) and with the clutch cover (3) of input axle sleeve unitary rotation, be installed on shell (15) lower end banking pin (4) and drives clutch cover (3) sell with dehydration respectively (6), banking pin (4) even/driver element that breaks;

Washing state, driver element controls clutch cover (3) and is connected with banking pin (4) and sells (6) disconnect with dehydration, dewatering state, and driver element control clutch cover (3) is sold (6) and is connected and disconnects with banking pin (4) with dewatering.

10. one kind have as arbitrary in claim 1-9 as described in the washing machine of decelerating clutch of washing machine, comprise the outer barrel be filled with water, the interior bucket being coaxially arranged on placement clothing in outer barrel, the impeller being coaxially arranged on bottom of the barrel and drive motors, it is characterized in that: described power shaft (1) is connected with drive motors, output shaft (13) is connected with impeller, dehydrating shaft (12) is connected with interior bucket, impeller and interior bucket reverse Double-directional rotary is each other made by the deceleration transmission of speed-reducing clutch, impeller and interior bucket synchronized in the same way one-directional rotation during dehydration during washing.