KR20040104979A - clutch of full automation-type washing machine - Google Patents

Abstract

PURPOSE: A clutch of a fully automatic washing machine is provided to extend the life span of the clutch, and to improve the reliability of the washing machine by minimizing friction force between the sliding coupler and the coupler supporting portion of the switching lever and preventing wear of the sliding coupler. CONSTITUTION: A clutch of a washing machine consists of a clutch housing(300) which combines with the lower part of an outer tub, a stopper(660) which is fixed to the lower part of the clutch housing, a rotor bushing(535) which is combined with the lower part of a washing shaft(200) to transmit rotational force to the washing shaft, a clutch motor(600) which is installed in the lower part of the outer tub, a cam(620) which is combined with the driving shaft of the clutch motor, a sliding coupler(650) which is lifting up and down along a dehydrating shaft(100) and switching the rotational force transmission passage of the motor into the washing shaft or the dehydrating shaft, a switching lever(640) which is turning by receiving power from the clutch motor and directly moving up and down the sliding coupler, and a connecting link assembly(630) which is transmitting driving force of the clutch motor to the sliding coupler through the switching lever. The shape of the switching lever is L-type. a lever body part is connected with the connecting link assembly and a sliding coupler is mounted on coupler supporting part.

Description

Clutch of full automatic washing machine

The present invention relates to a washing machine, and more particularly to improving the clutch mechanism structure of a motor direct type washing machine.

In general, a fully automatic washing machine is a product that removes contaminants such as clothing and bedding by using friction and impact of water flow due to emulsification of detergent and rotation of washing blades. Automatically set the water, water to the appropriate level according to the amount and type of laundry, and then wash the microprocessor control.

Hereinafter, a clutch mechanism structure of a conventional direct type washing machine will be described with reference to FIGS. 1 to 3.

1 is a schematic view of a fully automatic washing machine to which the clutch mechanism of the present invention is applied, and FIGS. 2A and 2B are principal part longitudinal sectional views schematically showing the configuration of an embodiment of a conventional washing machine driving device, and FIG. 3 is a perspective view of main parts of FIG. 2B. An outer tub 1 for storing the washing water is installed inside the outer case forming the outer shape of the washing machine.

In the outer tub 1, a washing tank 2 for both washing and dehydration is installed.

On the other hand, the dehydration shaft 100 for rotating the washing tank 2 is directly connected to the washing tank, the dehydration shaft is connected to the upper dehydration shaft 120 for rotating the washing tank, the upper dehydration shaft 120 and on the lower inner peripheral surface A cylindrical drum 160 with teeth formed thereon, and a lower dehydration shaft 140 connected to the lower end of the drum 160 to transmit the rotational force of the motor to the upper dehydration shaft 120.

The upper washing shaft 210 and the lower washing shaft 240 penetrate the inside of the dehydration shaft 100, and the laundry is fixed at the upper end of the upper washing shaft 210 penetrating the bottom surface of the washing tank. , Washing wing 3 for rotating in the reverse direction is installed.

In order to support the rotation of the upper dehydration shaft 120, an oilless bearing 180 is installed between the upper dehydration shaft 120 and the upper washing shaft 210. Here, in the oilless bearing, when the upper washing shaft 210 rotates inside the upper dehydrating shaft 120, if heat is generated by friction, the oil impregnated therein is the upper washing shaft 210 and the upper dehydrating shaft 120. It acts to keep the rotation smoothly out of between.

In addition, a plurality of planetary gears 220, one sun gear 242, and a carrier are provided in the drum 160 to reduce the rotational speed of the motor while transmitting power of the motor to the upper washing shaft 210 during washing. A deceleration means composed of 230 is provided.

On the other hand, the lower washing shaft 240 is coupled to the inside of the lower dehydration shaft 140 for transmitting the power of the motor to the planetary gear 220. In addition, a sun gear 242 is formed at an upper end of the lower washing shaft 240 to mesh with the planetary gear 220 to transmit power of the lower washing shaft 240 to the planetary gear 220.

During washing, the power generated by the motor is transmitted in the order of the sun gear 242, the planetary gear 220, the carrier 230, and the upper washing shaft 210 via the lower washing shaft 240. That is, the planetary gear 220 rotates in engagement with a sun gear 242 to be described later between carriers 230 that support the upper and lower portions of the shaft 222 during washing.

On the other hand, since the planetary gear 220 and the drum 160 rotates at the same time during dehydration, the planetary gear 220 revolves around the sun gear 242.

In addition, a lower portion of the upper dehydration shaft 120, a drum 160, and a clutch housing 300 for surrounding and protecting the upper portion of the lower dehydration shaft 140 are provided.

The clutch housing includes an upper clutch housing 300a and a lower clutch housing 300b, and the upper and lower clutch housings 300a and 300b are fastened to each other by bolts. Upper and lower bearings 330 and 340 supporting the upper and lower desorption shafts 120 and 140 are interposed at the upper end and the lower end of the clutch housing 300, respectively.

Meanwhile, the stopper 660 and the stator assembly 400 which will be described later are fastened to the lower end of the clutch housing 300 by bolts 662.

In addition, a brake assembly 700 for selectively restraining the rotation of the drum 160 is provided for the case where only the washing shaft 200 should be rotated during washing and when the dehydration should be stopped at the moment of dehydration.

At this time, the brake assembly 700 is connected to the brake lever 720 and the upper clutch housing 300a, the brake lever 720, and the lower clutch housing 300b interlocked with the drain valve (not shown). The through shaft 740, which is coupled to the through shaft 740, is connected to the brake spring 760, the brake lever 720 for giving the elasticity of the brake lever 720, and for braking the drum 160 The brake pad 780 is configured to include a brake hinge shaft 790 coupled to an end of the brake pad 780 and hinged when the brake lever 720 is pressed.

The motor for generating the rotational force of the dehydration shaft 100 and the washing shaft 200 includes a rotor assembly 500 which is a rotor directly connected to the lower washing shaft 240, and a lower end of the clutch housing 300. It is configured to include a stator assembly 400 is a stator coupled to generate a rotating magnetic field.

On the other hand, one side of the drive unit is provided with a clutch assembly for switching the power transmitted to the dehydration shaft 100 or the washing shaft 200.

In this case, the clutch assembly includes a clutch motor 600 providing power of a clutch motion, a link link assembly 630 for converting the rotational motion of the clutch motor 600 into a linear motion, and the link link assembly ( A switching lever 640 that rotates about a hinge axis by a linear motion of the shaft 630, and a rotor bushing 535 and a lower washing which are positioned at the top of the coupler support part 640b of the switching lever 640 and positioned at the center of the rotor assembly. It comprises a sliding coupler 650 for sliding the outer circumferential surface of the shaft 240, and a stopper 660 coupled to the protrusion 652 formed on the sliding coupler 650 to prevent rotation of the lower dehydration shaft 140 do.

The link link assembly 630 includes a motor connecting part 630a connected to one side of the clutch motor 600, a link body part 630b integrally formed with the motor connecting part 630a, and the link body. A link case 630c surrounding the portion 630b, a spring fastening portion 630d formed at one side of the link case 630c and hinged to the switching lever 640, and an outer circumferential surface of the link body portion 630b. It is configured to include a spring (630e) coupled to generate elasticity. An end of the link body portion 630b is integrally formed with a stepped spring so that the spring 630d is formed. It does not come out of the link body portion 630b.

And, the switching lever 640 (640a, 640b) is in the form of "b", including a lever body portion 640a connected to the connecting link 630, and a coupler support portion 640b on which the sliding coupler 650 is placed. Is formed. One end of the lever body portion 640a is hinged rotatably with the spring fastening portion 630d of the link case 630c, and the other end on which the hinge protrusion 660c is formed is a lever guide formed at one side of the stopper 660. It is hinged to the stopper hinge ball of 660d.

The coupler support part 640b extends substantially perpendicular to the lever body part 640a and is formed in a “U” shape. The sliding coupler 650 is stably placed on an upper surface of the coupler support part 640b having a “U” shape. A protrusion 640b-1 for supporting the spring 660e inserted into the spring support 660f of the stopper 660, which will be described later, is formed at one side of the coupler support 640b.

The sliding coupler 650 has a cylindrical shape and a serration in the axial direction is formed on the inner circumferential surface thereof, and is engaged with the serration formed on the outer circumferential surface of the lower dehydration shaft 140 and the rotor bushing 535. And, the upper end portion is formed with a projection 652 coupled to the gear coupling hole 660b formed at the lower end of the stopper 660.

In addition, a coupler spring 651 is provided at an upper portion of the sliding coupler 650 to press the sliding coupler 650 downward. A circular groove corresponding to the diameter of the coupler spring 651 is formed on the sliding coupler 650, and a portion of the coupler spring 651 is inserted. Also, the other end of the inserted coupler spring 651 contacts the lower bearing 340.

In addition, the sliding coupler 650 is engaged only with a serration of the first position (lower position) and the lower dehydration shaft 140 that are simultaneously engaged with the serrations formed in the rotor bushing 535 and the lower dehydration shaft 140, respectively. Up and down sliding to the second position (upper position) is possible.

The coupler spring 651 is compressed at a second position (upper position) in which the sliding coupler 650 is engaged only with the lower dehydration shaft 140, and the sliding coupler 650 is subjected to a downward pressure. In this case, since the sliding coupler 650 is supported by the coupler support part 640b, the sliding coupler 650 is stopped at the upper position.

However, in the first position, the sliding coupler 650 is pressed down by the elastic restoring force of the coupler spring 651 to stay in the lower position.

In addition, the stopper 660 is formed on the side of the stopper fastening hole 660a and the stopper fastening hole 660a for screwing the clutch assembly to the lower clutch housing 300b. A gear guide 660b coupled to the gear 660b, a lever guide 660d supporting the lever body portion 640a and having a stopper hinge hole to which the hinge protrusion 660c of the switching lever is rotatably coupled, the switching lever And a spring 660e for giving elasticity to the coupler support 640b and a spring support 660f for supporting the spring 660e when the 640 rotates to the dewatered position. The stopper 660 is coupled to the lower portion of the lower clutch housing 300b by a bolt 662 and fixed to the clutch housing 300.

In addition, the spring 660e can maintain a constant interval without contact between the sliding coupler 650 and the coupler support portion 640b during dehydration, and the vibration of the switching lever 640 due to the vibration generated during washing. prevent.

On the other hand, when the coupler support portion 640b and the sliding coupler 650 have to maintain a constant interval as described above, looks at the reason that the laundry is dewatered.

When dewatering, the lower dehydration shaft 140 rotates at high speed, and the washing tank 20 coupled with the lower dehydration shaft 140 also rotates at high speed. Since the sliding coupler 650 is engaged with the lower dehydration shaft 140, the sliding coupler 650 rotates at a high speed together with the lower dehydration shaft 140.

However, since the sliding coupler 650 rotates at a high speed in a state where the sliding coupler 650 is placed on the upper portion of the coupler support 640b, the sliding coupler 650, which is weaker than the coupler support 640b, is easily worn.

As described above, in order to prevent wear of the sliding coupler 650, the sliding coupler 650 and the coupler support part 640b should be prevented during dehydration, and the spring 660e serves to prevent contact as described above. do.

Hereinafter, the operation of the clutch assembly will be described with reference to FIGS. 2A and 2B.

2A illustrates a washing state in which the sliding coupler 650 is engaged only with the lower dehydration shaft 140, and the link link assembly 630, the switching lever 640, the sliding coupler 650, and the stopper 660 in the second position. ) Indicates the status.

2B illustrates a dehydration state in which the sliding coupler 650 is simultaneously engaged with the lower dehydration shaft 140 and the rotor bushing 535, and the link link assembly 630 and the switching lever 640 at the first position. The sliding coupler 650 and the stopper 660 are shown.

2B to 2A, that is, a process of moving the sliding coupler 650 to an upper portion will be described.

First, the clutch motor 600 is rotated under control by a microprocessor. The link link 630 is pulled toward the clutch motor 600 by the rotational movement of the clutch motor 600. In addition, by the movement of the connecting link 630, the switching lever 640 is inclined toward the clutch motor 600, the upper end of the lever body portion 640a around the stopper hinge ball.

And by the inclination of the lever body portion 640a, the coupler support portion 640b is inclined so that the end portion thereof faces the lower end of the stopper 660.

At this time, the sliding coupler 650 lying on the upper end of the coupler support part 640b has a serration formed on the lower circumferential surface of the lower dehydration shaft 140 and the serration formed on the outer circumferential surface of the rotor bushing 535. Sliding (second position). The protrusion 652 formed in the sliding coupler 650 by the sliding is engaged with the gear coupling hole 660b of the stopper 650.

On the other hand, looks at the action of the spring (630d) formed in the connection link (630). The spring 630d is sandwiched between one side wall of the link body portion 630b and the projection of the spring fastening portion 630c to form elasticity in the switching lever 640 to maintain a smooth operation of the sliding coupler 650. It is for. When the sliding coupler 650 is vertically sliding, it is difficult for the serration formed on the inner circumferential surface of the sliding coupler 650 and the serration formed on the outer circumferential surface of the lower washing shaft 240 and the rotor bushing 535 to meet each other accurately. . So, in consideration of this in the design of the washing machine is designed to rotate the motor finely to the left and right when the sliding coupler 650 vertical operation.

As described above, the gear of the inner circumferential surface of the sliding coupler 650 may be engaged with the outer circumferential surface of the lower washing shaft 240 and the rotor bushing 535 at the time of right and left rotation of the motor. And at this time, if the sliding coupler 650 is being forced to be slid upward with elasticity, it may be more smoothly engaged between each tooth. A spring 630d is fastened inside the connection link 630 in order to maintain elasticity when sliding the upper coupler 650 as described above.

On the other hand, with reference to Figures 1 to 3 will be described the operation during washing and dehydration of the drive device.

As shown in Figure 2a during the washing by the operation of the clutch motor 600, the switching lever 640 is rotated in the counterclockwise direction on the drawing about the hinge point. In addition, the coupler support part 640b is moved upward (second position) so that the sliding coupler 650 may be engaged only with the lower dehydration shaft 240 by the rotation of the switching lever 640.

Then, when power is applied to the washing machine driving motor, the rotor assembly 500 rotates around the stator assembly 400 around the lower washing shaft 240.

Looking at the rotational force transmission process in this case, the rotational force by the rotation of the rotor assembly 500, the rotor bushing 535 of the rotor frame 530, the lower washing shaft 240 coupled to the rotor bushing 535, planetary It is transmitted to the gear 220, the carrier 230, the upper washing shaft 210.

At this time, the dehydration shaft 100 does not rotate because the lower dehydration shaft 240 is constrained by the sliding coupler 600.

On the other hand, since the planetary gear 220 is constrained by the brake assembly 700 when the drum 160 of the dehydration shaft 100 is washed, the planetary gear 220 is disposed in the opposite direction to the sun gear 242 formed at the upper end of the lower washing shaft 240. At the same time, the rotation around the drum 160 in the same direction as the sun gear 242. As the planetary gear 242 revolves as described above, the upper washing shaft 210 connected to the carrier 230 rotates inside the upper dehydration shaft 120.

As shown in FIG. 2B, when dewatering, the switching lever 640 is vertical by driving the clutch motor 600, and the coupler support part 640b moves the slide coupler 650 to the lower dehydration shaft 240 and the rotor. The lower portion is moved to engage the bushing 535 simultaneously (first position). That is, the protrusion 652 of the sliding coupler 650 is separated from the gear coupling hole 660b of the stopper 660 and the sliding coupler 650 is lowered downward by its own weight.

Looking at the rotational force transmission process at this time, the rotational force of the rotor assembly 500, the rotor bushing 535, the lower washing shaft 240, the planetary gear 220, the upper washing shaft 210 of the rotor frame 530 Is passed to.

And the rotational force transmitted to the upper washing shaft 210 is a state in which the sliding coupler 650 is engaged with the rotor bushing 535 and the lower dehydration shaft 140 at the same time through the lower dehydration shaft 140 and the drum 160 It is delivered to the upper dehydration shaft (120).

That is, during dehydration, the washing shaft 200 and the dehydration shaft 100 are simultaneously rotated at the same speed by the driving of the motor to perform dehydration.

On the other hand, the planetary gear 220 does not rotate because the drum 160 of the dehydration shaft 100 rotates at the same speed as the lower washing shaft 240, but the drum 160 is in the same direction as the sun gear 242. Revolve together.

However, such a conventional washing machine has various problems as follows.

First, since the sliding coupler 650 rotates while being placed at the end of the switching lever, the sliding coupler 650, which is weaker than the coupler support part 640b, is easily worn.

That is, during washing, the connecting connecting spring 67b of the connecting portion 67 having a smaller elasticity than the spring 66c is pulling the upper portion of the switching lever 640 in the direction of the lever operating motor 68 so that the sliding coupler 650 and Contact of the coupler support portion 640b cannot be prevented.

Meanwhile, in order to prevent abrasion of the sliding coupler 650 as described above, the sliding coupler 650 and the coupler support part 640b should be prevented during dehydration, and the spring 660e serves to prevent contact.

However, when the spring 660e for preventing the wear of the sliding coupler 650 is detached by the impact or the like when dewatered, the gap between the switching lever 640 and the sliding coupler is not maintained, so that the wear of the sliding coupler is reduced. Problems that occur rapidly occur.

The present invention is to solve the above problems, and an object thereof is to effectively prevent the wear of the sliding coupler for switching the power transmission path of the washing machine driving motor.

1 is a schematic diagram of a fully automatic washing machine to which the clutch mechanism of the present invention is applied;

2a and 2b is a longitudinal sectional view showing the structure of the clutch mechanism of the automatic washing machine according to the prior art,

2A is a state diagram at the time of washing

Figure 2b is a state diagram at the time of dehydration

3 is a perspective view of main parts of FIG. 2;

4A and 4B are longitudinal sectional views showing the structure of the clutch mechanism of the automatic washing machine according to the present invention;

4A is a state diagram at the time of washing

4B is a state diagram at the time of dehydration

5 is a perspective view showing the structure of the switching lever of FIG.

* Description of the symbols for the main parts of the drawings *

100 ..... dehydration 200 ..... laundry shaft

300 ..... Clutch housing 630 ..... Link link assembly

630f ..... connecting member 630g ..... support spring

630h ..... snap ring 640 ..... switching lever

650 ..... Sliding Coupler 660 ..... Stopper

660d ..... Lever Guide 700 ..... Brake Assembly

B ..... see

The present invention for achieving the above object is a washing tank rotatably installed in the outer tub, a pulsator installed in the washing tub and rotatable independently of the washing tub, and a demounting unit for transmitting the rotational power of the washing machine driving motor to the washing tub. The washing shaft is installed inside the dehydration shaft and transmits the rotational power of the washing machine driving motor to the pulsator, the rotor assembly and the stator assembly constituting the washing machine driving motor, and the washing stroke or the dehydrating stroke. A fully automatic washing machine comprising: a clutch mechanism capable of switching a power transmission path of a washing machine driving motor to a washing shaft or a dewatering shaft; The clutch mechanism includes a clutch housing coupled to the lower portion of the outer tub, a stopper fixed to the lower end portion of the clutch housing, a rotor bushing coupled to the lower end of the washing shaft so that the rotational force of the rotor is transmitted to the washing shaft, and the outer tub lower side. A decoupling or washing the transmission power transmission path of the washing machine driving motor while the clutch motor is installed in the motor, a cam coupled to the drive shaft of the clutch motor, a stopper fixed to the lower end of the clutch housing, and the motor is moved along the dehydration direction. A sliding coupler for switching to an axis, a switching lever for receiving the power of the clutch motor through a link link assembly, and for directly moving the sliding coupler up and down; and a rolling member provided at a part contacting the sliding coupler of the switching lever; Sliding coupler through the switching lever for driving force of the clutch motor It characterized by configured by a connecting link assembly which is provided between the clutch motor and the switching lever to pass.

Hereinafter, an embodiment of a fully automatic washing machine driving apparatus according to the present invention will be described in detail with reference to FIGS. 4 and 5.

4A and 4B are longitudinal sectional views showing the structure of the clutch mechanism of the automatic washing machine according to the present invention. FIG. 4A is a state diagram at the time of washing, and FIG. 4B is a state diagram at the time of dehydration. 5 is a perspective view illustrating the switching lever structure of FIG. 4.

According to the drawings, the present invention is a washing tank (2) rotatably installed in the outer tank (1), a pulsator (3) rotatably installed in the washing tank (2), and the rotational power of the washing machine driving motor in the washing tank The dewatering shaft 100 for transmitting the washing shaft 200 is installed inside the dewatering shaft and transmits the rotational power of the washing machine driving motor to a pulsator, and the rotor assembly 500 constituting the washing machine driving motor. And a stator assembly 400 and a clutch mechanism capable of switching a power transmission path of a washing machine driving motor to a washing shaft or a dehydrating shaft in response to a washing stroke or a dehydrating stroke; The clutch mechanism is coupled to the lower portion of the outer tub 1, the clutch housing 300, the stopper 660 fixed to the lower end of the clutch housing, and the lower end of the washing shaft is coupled to the rotational force of the rotor is transmitted to the washing shaft Rotor bushing 535, the clutch motor 600 is installed on the lower side of the outer tank, the cam 620 coupled to the drive shaft of the clutch motor, and the washing machine driving motor while lifting along the dehydration direction Sliding coupler 650 for switching the power transmission path to the de-shrinkage or washing shaft, and the switching lever 640 to move the sliding coupler 650 directly up and down while rotating by receiving the power of the clutch motor 600. And, the rolling member provided in the portion in contact with the sliding coupler 650 of the switching lever 640, and to transfer the driving force of the clutch motor 600 to the sliding coupler through the switching lever It is configured to include a connecting link assembly 630 provided between the clutch motor 600 and the switching lever 640.

At this time, the switching lever 640 is in the form of "b", the lever body portion 640a and the sliding coupler 650 is connected to the connecting member 630f of the link link assembly 630 which will be described later, It is configured to include a coupler support portion 640b to be raised.

A protrusion (not shown) coupled to a hinge hole 660c formed at an end of the stopper 610 is formed at a lower end of the lever body 640a, and the coupler support 640b is illustrated in FIG. 4. As shown in the bottom of the lever body portion 640a extends in a substantially perpendicular direction with respect to the lever body portion, it is formed in a branched form to form a "U" shape, the sliding coupler 650 on the top Is placed.

The ball B is rotatably installed as a rolling member at a portion of the coupler supporting part 640b that contacts the sliding coupler 650.

Referring to Figure 5 looks at in more detail with respect to the installation structure of the ball (B), which is a rolling member installed in the switching lever 640.

As shown, a groove B1 through which the ball B is press-fitted is formed at the end of the coupler support part 640b.

Then, after lubricating oil is applied to the groove B1, the ball B is inserted and the upper end of the groove B1 is caulked to fix the ball B inside the groove B1.

The connection link assembly 630 includes a connection member 630f rotatably coupled to one side of the switching lever 640 and a support spring 630g coupled to the other side of the connection member 630f. It is composed.

On the outer circumferential surface of the connecting member 630f, a spiral groove 630f-1 for coupling the support spring 630g is formed.

At this time, the helical groove 630f-1 formed in the connecting member 630f has a support spring 630g to move forward along the helical groove 630f-1 when the support spring 630g is twisted in a direction in which the diameter is widened. Is formed.

And, one end of the support spring (630g) is provided with a snap ring portion (630h) for coupling to the cam 620 of the clutch motor. That is, when the force is removed while the cam 620 is inserted into the snap ring by opening the snap ring 630h, the neck of the cam 620 is coupled to the snap ring 630h.

On the other hand, the rotation center of the switching lever 640 is located in the lever guide 660d installed on the stopper 660.

Hereinafter, the operation of the washing machine according to the present invention will be described with reference to FIGS. 4A and 4B.

Hereinafter, the operation of the clutch assembly will be described with reference to FIGS. 4A and 4B.

4A illustrates a washing state in which the sliding coupler 650 is engaged only with the lower dehydration shaft 140, and the connection link 630, the switching lever 640, the sliding coupler 650, and the stopper 660 in the second position. Indicates.

4B illustrates a dehydration state in which the sliding coupler 650 is simultaneously engaged with the lower dehydration shaft 140 and the rotor bushing 535, and the link link 630 and the switching lever 640 at the first position are slid. The coupler 650 and the stopper 660 are shown.

4B to 4A, that is, a process of moving the sliding coupler 650 to an upper portion will be described.

First, the clutch motor 600 is rotated under control by a microprocessor. The link link 630 is pulled toward the clutch motor 600 by the rotational movement of the clutch motor 600. In addition, by the movement of the connecting link 630, the switching lever 640 is inclined toward the clutch motor 600, the upper end of the lever body portion 640a about the stopper hinge hole 660c.

And by the inclination of the lever body portion 640a, the coupler support portion 640b is inclined so that the end portion thereof faces the lower end of the stopper 660.

At this time, the sliding coupler 650 lying on the upper end of the coupler support part 640b has a serration formed on the lower circumferential surface of the lower dehydration shaft 140 and the serration formed on the outer circumferential surface of the rotor bushing 535. Sliding (second position). The protrusion 652 formed in the sliding coupler 650 by the sliding is engaged with the gear coupling hole 660b of the stopper 650.

On the other hand, looks at the action of the support spring (630g) constituting the connection link assembly (630). The support spring 630g is inserted into the connecting member 630f to form elasticity in the switching lever 640 to maintain a smooth operation of the sliding coupler 650. When the sliding coupler 650 slides up and down, it is difficult for the teeth formed on the inner circumferential surface of the sliding coupler 650 and the teeth formed on the outer circumferential surfaces of the lower washing shaft 240 and the washing shaft support member 535b to meet each other accurately. . So, in consideration of this in the design of the washing machine is designed to rotate the motor finely to the left and right when the sliding coupler 650 vertical operation.

As described above, the gear of the inner circumferential surface of the sliding coupler 650 may be engaged with the outer circumferential surface of the lower washing shaft 240 and the rotor bushing 535 at the time of right and left rotation of the motor.

And, at this time, if the sliding coupler 650 is being forced to be slid upward with elasticity, it may be more smoothly engaged between each tooth.

Therefore, when the upper sliding of the sliding coupler 650 as described above, the support spring 630g is compressible and a tensionable spring is used within a certain elastic limit for maintaining the elasticity.

On the other hand, with reference to Figures 4a and 4b will be described the operation during washing and dehydration of the drive device.

As shown in Figure 4a during the washing by the operation of the clutch motor 600, the switching lever 640 is rotated in the counterclockwise direction on the basis of the hinge point. In addition, the coupler support part 640b is moved upward (second position) so that the sliding coupler 650 may be engaged only with the lower dehydration shaft 240 by the rotation of the switching lever 640.

When power is supplied to the washing machine driving motor, the rotor assembly 500 rotates around the stator assembly 400 around the lower washing shaft 240.

Looking at the rotational force transmission process in this case, the rotational force by the rotation of the rotor assembly 500, the rotor bushing 535 of the rotor frame 530, the lower washing shaft 240 coupled to the rotor bushing 535, planetary It is transmitted to the gear 220, the carrier 230, the upper washing shaft 210.

At this time, the dehydration shaft 100 does not rotate because the lower dehydration shaft 240 is constrained by the sliding coupler 600.

On the other hand, since the planetary gear 220 is constrained by the brake assembly 700 when the drum 160 of the dehydration shaft 100 is washed, the planetary gear 220 is disposed in the opposite direction to the sun gear 242 formed at the upper end of the lower washing shaft 240. At the same time, the rotation around the drum 160 in the same direction as the sun gear 242. As the planetary gear 242 revolves as described above, the upper washing shaft 210 connected to the carrier 230 rotates inside the upper dehydration shaft 120.

As the laundry proceeds, the present invention can prevent the sliding coupler 650 from being worn by the coupler support part 640b as the balls B are rotatably installed at both ends of the coupler support part 640b. That is, the sliding coupler 650 is rotated in the point contact state with the ball (B) coated with lubricating oil and at this time the ball (B) also rotates, so that the wear of the sliding coupler 650 is effectively prevented.

As shown in FIG. 4B, when dewatering, the switching lever 640 is vertical by driving the clutch motor 600, and the coupler support part 640b moves the slide coupler 650 to the lower dehydration shaft 240 and the rotor. The lower portion is moved to engage the bushing 535 simultaneously (first position). That is, the protrusion 652 of the sliding coupler 650 is separated from the gear coupling hole 660b of the stopper 660 and the sliding coupler 650 is lowered downward by its own weight.

Looking at the rotational force transmission process at this time, the rotational force of the rotor assembly 500, the rotor bushing 535, the lower washing shaft 240, the planetary gear 220, the upper washing shaft 210 of the rotor frame 530 Is passed to.

And the rotational force transmitted to the upper washing shaft 210 is a state in which the sliding coupler 650 is engaged with the rotor bushing 535 and the lower dehydration shaft 140 at the same time through the lower dehydration shaft 140 and the drum 160 The upper dehydration shaft 120 is delivered.

That is, during dehydration, the washing shaft 200 and the dehydration shaft 100 are simultaneously rotated at the same speed by the driving of the motor to perform dehydration.

On the other hand, the planetary gear 220 does not rotate because the drum 160 of the dehydration shaft 100 rotates at the same speed as the lower washing shaft 240, but the drum 160 is in the same direction as the sun gear 242. Revolve together.

As described above, during the dehydration process, the sliding coupler 650 and the coupler support part 640b may be maintained at a predetermined interval by the support spring 630g.

However, when the support spring 630g is separated by an impact, the sliding coupler 650 may be brought into contact with the coupler support part 640b by disappearing the force to press the switching lever. According to the present invention, the coupler support part 640b is used. As the ball B is rotatably installed at), the sliding coupler 650 can be prevented from being worn even in this case.

Therefore, according to the present invention, the sliding coupler 650 can be prevented from being worn during washing as well as during dehydration.

As described above, in order to prevent the sliding coupler from being worn because the coupler support part and the sliding coupler are in contact with each other during washing, it is a basic technical gist of the present invention to install the balls rotatably at both ends of the coupler support part. Able to know.

At the same time, the present invention is within the scope of the basic technical idea, many modifications are possible to those skilled in the art.

According to the present invention as described above it is possible to effectively prevent the wear of the sliding coupler for switching the power transmission path of the washing machine driving motor.

That is, by minimizing the friction force between the sliding coupler and the coupler support portion of the switching lever, wear of the sliding coupler can be effectively prevented, thereby improving product life and reliability.

Claims (7)

A washing tank rotatably installed in the outer tank, a pulsator installed in the washing tank and rotatable independently of the washing tank, a deshrinkage for transmitting the rotational power of the washing machine driving motor to the washing tank, and installed inside the deshrinkage pulsator Washing power transmission path of the washing machine driving the washing machine driving motor to the rotor, the rotor assembly and stator assembly constituting the washing machine driving motor, and the washing stroke or dehydration stroke A fully automatic washing machine having a clutch mechanism switchable to a shaft or a dehydration shaft; The clutch mechanism, A clutch housing coupled to the outer tub lower portion; A stopper fixed to a lower end of the clutch housing; A rotor bushing coupled to the lower end of the washing shaft so that the rotational force of the rotor is transmitted to the washing shaft; Clutch motor installed on the lower side of the outer tank, A cam coupled to the drive shaft of the clutch motor; Sliding coupler for switching the rotational power transmission path of the washing machine driving motor to the deshrinkment or washing shaft while moving up and down along the deshrinkage direction, A switching lever for receiving the power of the clutch motor through a link link assembly to move the sliding coupler directly up and down; And the rolling member provided in the part in contact with the sliding coupler of the switching lever, And a connecting link assembly provided between the clutch motor and the switching lever to transfer the driving force of the clutch motor to the sliding coupler through the switching lever. The method of claim 1, The switching lever is in the form of "b", And a lever body portion coupled to the connection link assembly and a coupler support portion on which the sliding coupler is placed. The method of claim 2, The coupler support portion extends in a direction orthogonal to the lever body portion at a lower end of the lever body portion, and extends in a branched form to form a "U" shape. The method of claim 3, wherein Fully automatic washing machine, characterized in that the ball is provided as a rolling member provided in the portion in contact with the sliding coupler of the coupler support. The method according to any one of claims 2 to 4, Fully automatic washing machine, characterized in that the groove is formed in the end of the coupler support portion is provided with the rolling member. The method according to any one of claims 2 to 4, Fully automatic washing machine, characterized in that the lubricant is applied to the rolling member. The method of claim 5, wherein The rolling member is a fully automatic washing machine, characterized in that the upper end of the groove formed at the end of the switching lever is fixed to the inside of the groove rotatable as caulking (caulking).