KR0132191B1 - Clutch for a washing machine - Google Patents

Abstract

An object of the present invention is to provide a clutch of a two-type washing machine configured to selectively control the driving force generated by one electric motor 1 to the pulsator 11 and the dehydration tank (14).

The clutch for a washing machine according to the present invention is fixed to the rotary shaft 2 of the electric motor 1, the sun gear 3 being rotated by the rotation of the rotary shaft 2, the outer surface by the surface contact with the lining of the band brake The clutch case 5 is polished to be braked and has an internal gear 6 formed therein, a brake lining for controlling the rotation of the clutch case 5 itself by surface contact with the outer surface of the clutch case. At least two planetary gears 4, which are placed between the sun gear 3 and the internal gear 6 of the clutch case 5 and are gear-coupled to transmit power, are mounted on the upper end of the planetary gear 4, The pulsator shaft 7 fixed to rotate according to the rotation of the planetary gear 4, the ratchet gear 8 and the ratchet fixed to the pulsator shaft 7 to control the rotation of the pulsator 11 itself. Gear combination with gear (8) With a ratchet gear (8) is fixed characterized by constituted by any ratchet (9) for controlling rotation of the pulsator shaft 7.

Description

Clutch for Washing Machine

1 is a cross-sectional view schematically showing a clutch for a washing machine according to the present invention.

2 is a cross-sectional view showing a state in which the clutch case is fixed and the pulsator shaft is rotatable.

3 is a cross-sectional view showing a state in which the pulsator shaft is fixed and the clutch case is rotatable.

4 is a plan sectional view showing the rotation of the sun gear and the planetary gear in the second state.

5 is a plan sectional view showing the rotational state of the sun gear, the planetary gear and the clutch case in the state of FIG.

* Explanation of symbols for main parts of the drawings

1: electric motor 2: rotating shaft

3: sun gear 4: planetary gear

5: clutch case 6: internal gear

7: pulsator shaft 8: ratchet gear

9: ratchet 10: brake lining

11: pulsator 12: belt

13: pulley 14: dehydration tank

[Field of Invention]

The present invention relates to a clutch for a washing machine.

In particular, the present invention relates to a washing machine clutch configured to selectively control the driving force generated by one electric motor in a two-chamber washing machine to a pulsator and a dehydration tank.

[Background of invention]

One tank automatic washing machine mounts a washing tank in which a plurality of water outlets are formed on a separate side wall in one storage tank for storing the washing water, and rotates a pulsator for forming water flow at the bottom of the washing tank to have a concentric shaft with the washing tank. By fixing it and rotating it, it is configured to wash the laundry between the laundry, the inner wall of the laundry and the washing tank, or the laundry and the pulsator. Among these, only the washing tank and the pulsator actually rotate, and the washing tank is dehydrated. It rotates the bay and exerts strong centrifugal force on the laundry, so that the wash water soaked in the laundry is discharged. Since the washing tank and the pulsator are rotatably fixed to one concentric shaft, only one electric motor is needed for generating power in the case of a single tank washing machine. In order to adjust, various control circuits or mounting and reduction gears of microprocessors, which have recently been adopted, are employed.

On the other hand, in the case of a two-chamber washing machine, two tubs of a washing tank for performing a washing process and a dehydrating tank for performing a dehydration process are separately installed and mounted inside a single washing machine, and rotatably at a lower end of the washing tank. Two electric motors, one for the fixed motor and the other for the rotation of the dehydration tank, for driving the pulsator generating water flow, are mounted in the washing and dewatering tanks, respectively. The electronics are also organized separately. This is a significant cost increase and productivity has been a factor.

The present inventors have developed a clutch for a washing machine that can drive a washing tank and a dehydration tank, respectively, by one electric motor, thereby solving the above problems and completing the present invention.

[Purpose of invention]

An object of the present invention is to provide a clutch of a two-chamber washing machine.

Another object of the present invention is to provide a clutch of a two-type washing machine configured to selectively control the driving force generated by one electric motor to the pulsator and the dehydration tank.

[Summary of invention]

An object of the present invention is to provide a clutch of a two-type washing machine configured to selectively control the driving force generated by one electric motor to the pulsator and the dehydration tank.

Washing clutch according to the present invention is fixed to the rotary shaft of the electric motor is rotated by the rotation of the rotary shaft, the outer surface is polished to be braked by the surface contact with the lining of the band brake, the inner gear At least two clutch case is formed, the brake lining for controlling the rotation of the clutch case itself in surface contact with the outer surface of the clutch case, is placed between the sun gear and the internal gear of the clutch case is at least geared to transfer power At least one planetary gear, a pulsator shaft mounted on an upper end of the planetary gear and fixed to rotate according to the rotation of the planetary gear, a ratchet gear for controlling the rotation of the pulsator itself and the ratchet gear fixed to the pulsator shaft; The pulsator shaft on which the ratchet gear is fixed The constituted by any latch for controlling the rotation features.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[Description of Specific Example of the Invention]

As shown in FIG. 1, the washing machine clutch according to the present invention is fixed to the rotating shaft 2 of the electric motor 1, the sun gear 3 being rotated by the rotation of the rotating shaft 2, the outer surface of the band It is polished to be braked by the surface contact with the lining of the brake, and the inner surface of the clutch case 5 and the clutch case 5 formed on the inner surface of the brake, the surface of the clutch case 5 itself Brake lining 10 for controlling rotation at least two planetary gears (4), which are placed between the sun gear (3) and the internal gear (6) of the clutch case (5) is geared to transfer power, the A pulsator shaft 7 mounted on the upper end of the planetary gear 4 and fixed to rotate according to the rotation of the planetary gear 4 and fixed to the pulsator 7 to control the rotation of the pulsator 11 itself. Ratchet gear 8 and the ratchet gear for It characterized in that it consists of a ratchet (9) for controlling the rotation of the pulsator shaft (7) fixed to the ratchet gear (8) by the gear coupling with (8).

The sun gear (3) is fixed to the rotary shaft (2) of the electric motor (1) and rotates simultaneously with the rotary shaft (2) in accordance with the rotation of the rotary shaft (2), which is a planetary gear (4) gear-coupled thereto Functions to transmit torque.

The clutch case 5 has an outer surface which is polished to be braked by surface contact with the lining of the band brake, and is formed with an internal gear 6 on the inner surface thereof, and the internal gear 6 includes the sun gear ( 3) and the planetary gear (4) which is a gear defect is also geared. Therefore, when rotating with the sun gear (3) fixed to the rotary shaft (2) of the electric motor (1), the planetary gear (4) geared with the sun gear (3) is rotated at the same time as the rotation of the sun gear (3) Since the clutch case 5 is also gear-coupled to the planetary gear 4 by the internal gear 6 of its inner surface, the clutch case 5 can rotate in accordance with the rotation of the electric motor 1.

The brake lining 10 is fixed to the outer surface of the clutch case 5 adjacently and variably so that the clutch case 5 may be contacted and spaced apart from the brake lining 10 which is variable by the normal brake line. The rotation of itself is controlled.

The planetary gear 4 is placed between the sun gear 3 and the internal gear 6 of the clutch case 5 to be coupled to each other to transmit power, and at least two or more preferably three planetary planets. A gear 4 may be interposed between the sun gear 3 and the internal gear 6 of the clutch case 5.

The lower end of the pulsator shaft 7 is rotatably mounted to the upper end of the planetary gear 4 at the upper end of the planetary gear 4. At this time, the upper end of the planetary gear 4 and the lower end of the pulsator shaft 7 is a combination that can be freely rotated, not a separate gear coupling.

At the interruption of the pulsator shaft 7, the ratchet gear 8 is fixed integrally with the pulsator shaft 7 so that the control by the interference of the ratchet 9 of the ratchet gear 8 is immediately controlled by the pulsator shaft ( The rotation of 7) is to be controlled. That is, when the ratchet 9 is inserted between the gear teeth of the ratchet gear 8, the ratchet gear 8 cannot be rotated, and accordingly, a pulsator shaft fixed integrally with the ratchet gear 8 is provided. (7) Again, rotation is impossible. On the contrary, when the ratchet 9 inserted between the gear teeth of the ratchet gear 8 is separated, the ratchet gear 8 is rotatable again, and thus the pulsator shaft 7 is a planetary gear fixed to the lower end thereof. It can be rotated by the rotation of 4).

The part to be finally rotated under the rotational force of the electric motor 1 is the pulsator 11 and the dehydration tank 14, the pulsator 11 is fixed directly to the upper end of the pulsator shaft (7) Can be directly rotated by the rotation of the pulsator shaft (7), the dehydration tank 14 is a pulley of the dehydration tank 14 is fixed to the outer surface of the clutch case (5) and the lower end of the dehydration tank (14) (13) is connected to the power transmission belt 12 so as to receive the rotational force of the clutch case (5). In the dehydration tank 14 and the pulley 13 of the dehydration tank 14 is fixed to the dehydration tank 14, the pulley 13 is rotated by the rotation of the power transmission belt 12 as the pulley ( 13) can be rotated at the same time.

The action according to the configuration of the present invention is as follows.

In the washing machine clutch according to the present invention, the rotational force of the electric motor 1 can be used for the rotation of the pulsator 11 and the rotation of the dehydration tank 14 by the configuration as described above. It can be controlled by the operating sequence as shown.

First of all, when the washing stroke is started, only the pulsator 11 should be rotated. In this case, as shown in FIG. 2, the brake line 10 is connected to one end of the brake line 10 to relax the brake line. The clutch case 5 can be rotated and the ratchet 9 is separated between the gear teeth of the ratchet gear 8 fixed to the interruption of the pulsator shaft 7, and the clutch case 5 is rotated. (7) and the sun gear (3) fixed to the end of the rotary shaft (2) of the electric motor (1) as the electric motor (1) fixed to the lower end of the clutch case (5) rotates so as to be rotatable state Rotate As the sun gear 3 rotates, the planetary gears 4 around the sun gear 3, which are geared to the sun gear 3, are linked and rotated by gear teeth engaged by the gear coupling. Although the gears are gear-coupled with the sun gear 3 and also gear-coupled with the internal gear 6 of the clutch case 5, the clutch case 5 cannot be rotated so that the clutch case The internal gear 6 of (5) is in a fixed state, and therefore the sun gear 3 rotates under rotational force from the electric motor 1, so that the planetary gear 4 is rotated according to the rotation of the sun gear 3. It rotates along the internal gear 96 of the clutch case 5 which does not rotate while rotating simultaneously with the sun gear 3. This rotational state is shown in FIG. Accordingly, the pulsator shaft 7 rotatably fixed to the upper end of the planetary gear 4 is rotated while forming a concentric shaft with the rotation shaft 2 of the electric motor 1. 11) rotates to perform the laundry administration. At this time, since the planetary gear 4 rotates by the gear coupling with the internal gear 6 and revolves around the sun gear 3, the rotational movement of the planetary gear 4 can be freely rotated at the upper end of the planetary gear 4. It is possible to rotate the pulsator shaft 7 and the ratchet gear 8 coupled thereto.

In addition, as shown in FIG. 3, the ratchet 9 cannot be rotated by inserting the ratchet 9 between the gear teeth of the ratchet gear 8 fixed to the stop of the pulsator shaft 7. At the same time, the brake line 10 is loosened to be spaced apart from the outer surface of the clutch case 5 by the force of the spring connected to the brake lining 10, and fixed to the upper end of the pulsator shaft 7. The pulsator 11 does not rotate, and only the clutch case 5 rotates, and as the clutch case 5 rotates, the pulley 13 of the clutch case 5 and the dehydration tank 14 is rotated. Of the electric motor 1 for rotating the clutch case 5, that is, rotating the clutch case 5 while simultaneously rotating the power transmission belt 12 between the clutch case 5 and the outer surface of the clutch case 5, respectively. The rotational force is transmitted to the dehydration tank 14 so that The water tank 14 is rotated to apply centrifugal force to the laundry in the dewatering tank 14 to dehydrate the laundry. This rotational state is shown in FIG.

In order to control two different rotations such as rotation of the pulsator and rotation of the dehydration tank, it is obvious that the brake lining 10 and the ratchet 9 must be operated in opposite directions as described above. That is, when the brake lining 10 is in contact, the ratchet 9 must be out of the ratchet gear 8, and the ratchet 9 is in contact with the ratchet gear 8. When engaged, the brake linings 10 must be controlled in opposite directions to be spaced apart.

In the above operation, the ratchet 9 for controlling the ratchet gear 8 of the pulsator shaft 7 or the brake wire for controlling the contact and separation of the brake lining 10 may be a manual lever or solenoid for control. And the like, which will be apparent to those of ordinary skill in the art.

Effects of the configuration and operation of the present invention are as follows.

The washing machine clutch according to the present invention is configured to selectively transmit the rotational force of the electric motor 1 to the pulsator 11 and the dehydration tank 14 by using one electric motor 1, and a separate It is possible to supply the pulsator 11 and the dehydration tank 14 with a rotating torque having a large torque without using a reduction gear. Therefore, even in a two-chamber washing machine, the pulsator 11 and the dehydration tank 14 can be selectively driven using one electric motor 1 and the necessary electric parts.

Although the present invention has been described in detail only with respect to the above-described embodiments, it will be apparent to those skilled in the art that the present invention may be changed or modified within the spirit and scope of the present invention, and such changes or modifications are attached to the appended claims. Should be limited by

Claims (2)

The sun gear 3, which is fixed to the rotary shaft 2 of the electric motor 1 and rotated by the rotation of the rotary shaft 2, is ground so that the outer surface can be braked by surface contact with the lining of the band brake, A clutch case 5 having an internal gear 6 formed therein, a brake lining 10 for controlling the rotation of the clutch case 5 itself by surface contact with the outer surface of the clutch case, and the sun gear 3; At least two planetary gears 4 are disposed between the internal gears 6 of the clutch case 5 and are gear-coupled to transfer power, and are mounted on an upper end of the planetary gear 4 so as to mount the planetary gears 4. With a pulsator shaft (7) fixed to rotate in accordance with the rotation of the, the ratchet gear (8) and the ratchet gear (8) for controlling the rotation of the pulsator 11 itself fixed to the pulsator shaft (7) The ratchet gear 8 is fixed by gear coupling. Washing machine according to claim clutch constituted by any of the ratchet (9) for controlling the rotation of the three-axis data (7). 2. The planetary gear (4) according to claim 1, wherein the planetary gears (4) are three, and the planetary gears (4) are geared with the sun gear (3) while maintaining an angle of 120 ° with respect to each other about the sun gear (3). Clutch for washing machines characterized in that the.