KR950004282B1 - Driving device for washing machine - Google Patents

Abstract

The driving unit includes a solid arm having the second coupling which transmits the power of a motor shaft to a washing shaft, an actuator connected with the arm. The actuator is connected to a drying shaft used as a brake drum in drying. The driving unit also includes a brake lever interlocked with a cam, for moving the actuator in case of changing washing/drying modes, thereby effectively using space and efficiently performing a clutching/declutching mechanism in washing or drying.

Description

Driving device of automatic washing machine

1 is a longitudinal sectional view showing a driving unit of a conventional fully automatic washing machine.

2 is an enlarged longitudinal sectional view of the clutch of FIG.

Figure 3 is a half longitudinal cross-sectional view showing the present invention.

4 is an exploded perspective view of an arm and an actuator which are main parts of the present invention.

5 is a longitudinal sectional view of the cam according to the invention.

6 is a plan view showing a dehydration shaft for both brakes according to the present invention.

7 is a plan view showing the operation partner in the dehydration mode according to the present invention.

8 is a state diagram of the mode-specific actuator according to the present invention,

(a) is a state diagram in neutral position.

(b) is a state diagram of the washing position.

(c) is a state diagram at the dehydration position.

* Explanation of symbols for the main parts of the drawings

7: motor shaft, 8: washing shaft,

9: deshrinkage, 10: first coupling,

11: second coupling, 12: arm,

13: actuator, 14: spring,

15: cam, 15a: cam pin,

16: guide groove, 17: guide protrusion,

18: fixing protrusion, 19: insertion groove.

The present invention relates to a driving device for a full automatic washing machine, and more particularly, to simplify the structure of the driving unit installed in the full automatic washing machine, so as to smoothly transfer power to the rotor and the dehydrating tank during washing and dehydration. It is.

In the conventional fully automatic washing machine, as shown in FIG. 1, a washing / dehydrating tank 28 is rotatably installed in the outer tub 27, and a rotor 29 is disposed in the lower portion of the washing / dehydrating tank 28. The dehydration tank 28 and the rotor 29 are installed, and the dehydration shaft 9a and the washing shaft 8a of the clutch 3a installed on the bottom surface of the outer tank 27 are respectively physically penetrated. The motor pulley 30 and the V-belt pulley 31 are respectively installed on the motor 1a and the clutch 3a provided on one side of the bottom surface of the 27, so that the V-belt 32 is wound and transmitted.

In addition, as shown in FIG. 2, the above-described clutch 3a is provided with a spring block 34 at the lower portion of the gear side 33 that directly transmits power from the V-belt pulley 31 of the clutch 3a. On the outer circumferential surface of the lower dehydration shaft 9b of the upper portion of the spring block 34, the rotational driving force of the motor 1a is transmitted to the dehydration shaft during washing as a unit with the upper dehydration shaft 9a and the brake drum combined gear housing 35. Without dehydration, the first clutch spring 36 which is transmitted to the dehydration shaft is installed.

Also. On the outer circumferential surface of the first clutch spring 36, a clutch boss 38 having teeth 37 formed on its surface is provided, and a side portion of the dodge outer shell 27 that meshes with the teeth 37 of the clutch boss 38 is provided. Cam 40 is rotatably installed at the lower end of the lever 39, which is interlocked with the drain valve actuation solenoid (not shown) installed in the upper part of the gear housing 35, One-way clutch 41 for preventing the reverse rotation is installed. In addition, the gear housing 35 is provided with a planetary gear 42 for decelerating and transferring the power of the gear shaft 33 to the washing shaft 8a during washing, and a brake is provided on the outer circumferential surface of the brake drum and gear housing 5. The band 20a is fixed and comprised.

Generally, the driving device of the automatic washing machine is a washing mode in which the dehydration tank 28 is stopped as shown in FIG. 1 and the laundry is washed by left and right stirring of the rotor 29 and the dehydration tank 28 and the rotor 29. ) Is divided into dehydration mode, rotating at high speed at the same speed.

Therefore, when washing laundry with a conventional fully automatic washing machine, as shown in FIGS. 1 to 2, the forward rotational force of the motor 1a, which is transmitted to the clutch 3a as the V-belt 32, is the first clutch spring. Since the 36 is wound in the ice, it must be transmitted to the lower dehydration shaft 9a by the spring block 34, but the cam on the teeth 37 of the clutch boss 38 installed on the outer circumferential surface of the first clutch spring 36 is cam. 40 is engaged by pushing to prevent the winding of the first clutch spring 36 to prevent power transfer to the dewatering shaft 9a.

Accordingly, the rotational power transmitted to the gear shaft 33 is decelerated through the planetary gear 42 in the brake drum combined gear housing 35 and transferred to the washing shaft 8a, and is fixed on the washing shaft 8a. The electrons 29 are rotated to wash.

In addition, since the reverse rotational power of the motor 1a is the direction in which the first clutch spring 36 is released, the rotational power of the gear shaft 33 cannot be transmitted to the dehydration shaft 9a even at this time, and thus, the planetary gear 42 is decelerated. Then, the washing shaft 8a is transferred to the washing shaft 8a, and the laundry is rotated by rotating the rotor 29 fixed on the washing shaft 8a.

Also. Reaction rotation torque is generated in the gear housing 35 when the speed decreases through the planetary gear 42. The one-way clutch 41 which prevents reverse rotation of the dewatering shaft 9a by the reaction rotation torque and the brake The rotation of the dewatering shaft 9a is prevented by the brake band 20a mounted on the outer circumferential surface of the drum combined gear housing 35 at a predetermined pressure.

In addition, when the laundry is dewatered by the fully-operated washing machine, since the rotational power of the motor 1a transmitted to the clutch 3a by the V-belt 32 is always rotated forward, the first clutch spring 36 is wound in the winding direction. The first clutch spring 36 and the spring block 34 is in close contact with each other, the valve actuating solenoid is turned on to pull the brake lever 21a, and the cam of the lever 39 interlocked with the brake lever 21a. 40 is disengaged from the toothed portion 37 of the clutch boss 38.

At the same time, the brake band 203 is separated from the outer circumferential surface of the gear housing 35, so that the rotational force of the spring blade 34 is integral with the gear housing 35 and the gear housing 35. ) Is rotated at a high speed without deceleration, so that the laundry shaft 8a and the upper dewatering shaft 9a are rotated at a high speed in one direction to dehydrate the laundry.

Then, when dehydration is completed or the dehydration process is forcibly stopped during the dehydration, for example, when the drain valve actuating solenoid is turned off to release the lever 39, the cam 40 has the teeth of the color tooth boss 38 ( 37) in between.

At the same time, while the brake band 20a compresses the outer circumferential surface of the gear housing 35 to switch to the washing mode, the brake housing 20 and the upper part of the gear housing 35 stop the rotational operation of the gear housing 35 which is a brake drum. The dehydration tank 28 fastened through the dehydration shaft 9a is also stopped.

However, the driving apparatus of the conventional fully automatic washing machine has a structure in which the motor 1a and the clutch 3a are separately installed so that the power of the motor 1a is transmitted to the clutch 3a through the V-belt 32. In addition to the complicated structure of the clutch 3a, which has a function of selectively intercepting and decelerating rotational power during washing and dehydration, the structure of the clutch 3a is very complicated, and the rotational power is transmitted by the V-belt 32. There was a problem such that a lot of power loss occurs.

The present invention is to solve the above problems, the present invention is not only to simplify the structure of the drive unit by integrally installing the clutch and the motor of the automatic washing machine, but also selectively to the rotor and dehydration tank during washing and dehydration An object of the present invention is to provide a driving device for a fully automatic washing machine that can smoothly transmit power.

In order to achieve the above object, the present invention is an arm formed integrally with the second coupling for transmitting the power of the motor shaft to the washing shaft, and the actuator is fastened to the dehydration shaft combined with the brake drum when dewatering when the arm is engaged, and the It is a driving device of a fully automatic washing machine including a cam interlocked with a brake lever for moving the actuator during the change of washing and dehydration mode. Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 8 as follows.

Figure 3 is a half longitudinal cross-sectional view showing the present invention, Figure 4 is an exploded perspective view of the arm and the actuator that is the main part of the present invention, Figure 5 is a longitudinal cross-sectional view of the cam according to the present invention, Figure 6 is a combined brake drum according to the present invention Figure 7 is a plan view showing the dehydration shrinkage, Figure 7 is a plan view showing the operating state in the dehydration mode according to the present invention, Figure 8 is a state diagram of the mode-specific actuator according to the present invention, the power of the washing and dehydration drive unit of the automatic washing machine The motor support member 2 is installed on the outer circumferential surface of the motor 1 for transmitting the clutch, and the clutch 3 is installed on the motor 1 and the housing of the clutch 3 of the imaginary motor support member 2. (4) Between the ends, an elastic member 5 which absorbs the impact of driving the motor 1 is inserted and fixed as the fastening member 6.

In addition, the upper part of the motor shaft (7) of the motor (1) is connected to the washing machine (Pulsator Or Agltator), the washing shaft (8) through the clutch (3), the washing shaft (8) serves as a brake drum The dewatering shaft 9 to be fastened is fastened.

In addition, a first coupling 10 is inserted into the motor shaft 7 of the motor 1, and a second coupling 11 is inserted into the end of the washing shaft 8 so that the first and second couplings ( 10 and 11 are coupled to transfer the rotational power of the motor 1 to the washing shaft 8 without impact, and between the first and second couplings 10 and 11, an E-ring ( 12a) is inserted, and an arm 12 is integrally formed with the second coupling 11 at one end of the outer circumferential surface of the second coupling 11.

In addition, an actuator 13 is fastened to an arm 12 of the second coupling 11, and a spring 14 is installed between the end of the arm 12 and the actuator 13, and the The upper surface is provided with a cam 15 which slides in the radial direction, the guide groove 16 is formed in the cam 15 is inserted into the guide projection 17 formed on the bottom surface of the actuator 13, combined with the brake drum In the lower end of the dehydration shaft (9) is formed an insertion defect (19) into which the fixing protrusion (18) formed at one side of the lower portion of the actuator (14) is inserted.

In addition, a brake band 20 for restraining rotation of the dehydration shaft 9 at the end of washing and dehydration is mounted on the outside of the dehydration shaft 9 which is also a brake drum, and the brake lever 21 connected to the brake band 20 is mounted. ) Is installed through the side of the housing 4 of the clutch 3, the fixing pin 22 penetrating the upper portion of the housing 4 is fixed to the brake lever 21, the brake lever 21 and The torsion spring 23 is inserted into the fixing pin 22 between the housings 4, and one end of the cam 15 is hinged to the end of the brake lever 21 and the can pin 15a.

In addition, a bearing member 24 for supporting rotation of the dehydration shaft 9 is inserted between the upper and lower ends of the housing 4 and the dehydration shaft 9, respectively, and the upper end and the dehydration shaft 8 of the dehydration shaft 9 are inserted. And between the upper end of the housing 4 and the dehydration shaft 9, respectively, to prevent leakage of water, and between the upper end of the dehydration shaft 9 and the washing shaft 8. In the washing shaft 8 under the sealing member 25, a bushing 26 for rotating the washing shaft 8 in the dehydration shaft 9 is installed. In addition, the motor 1 is composed of a variable speed motor capable of low speed high torque when washing, high speed rotation when dewatering.

In the present invention configured as described above, as shown in FIGS. 3 to 8, when the first washing is started, the fixing protrusion 18 having the lower one side of the actuator 13 is combined with the brake drum of the dehydration shaft 9. It is not known whether or not it is inserted into the insertion groove 19 formed in the lower end. Therefore, the fixing protrusion 18 of the actuator 13 is always inserted into the insertion groove 19 of the dehydration shaft 9 for the brake drum. Program the wash process to start the wash in the reverse direction that is not inserted.

Therefore, when washing laundry with a full automatic washing machine, the reverse rotational power of the motor 1 is the first coupling 10 inserted into the motor shaft 7 of the motor 1 and the end of the washing shaft 8 coupled thereto. It is transmitted to the washing shaft (8) without impact by the second coupling 11 of the, to rotate the rotor directly connected to the washing shaft (8).

At this time, the actuator 13 inserted into the arm 12 formed integrally with the second coupling 11 may be in the washing and dewatering mode of FIG. 8 (b) or (c), but the motor Since the rotation direction of (1) is the reverse direction and the cam 15 hinged to the brake lever 21 is in a state in which the brake lever 21 is not operated, the cam 15 is moved to the cam 15 even in the dehydration mode of FIG. The state of FIG. 8 (b) is changed to the washing mode.

At this time, the operation of the cam 15 is formed on the bottom surface of the actuator 13 by the operation of the cam 15 up to the neutral position of FIG. 8 (a) and inserted into the guide groove 16 of the cam 15. When the guide protrusion 17 is pushed, as shown in Fig. 8 (b), the elastic force of the spring 14 provided between the end of the arm 12 of the second coupling 11 and the actuator 13 shows the b) a force is generated to maintain the same state as in the laundry, and the washing protrusion 18 formed on one side of the lower part of the actuator 13 maintains such a state during washing so that the inside of the lower end of the dehydration shaft 9 having a brake drum is also used. Since it is not inserted into the insertion groove 19 formed in the power of the washing shaft 8 is not transmitted to the dehydration shaft (9).

Then, in order to proceed with the washing process for the stirring of the rotor, the motor 1 rotates in the forward direction. At this time, the actuator 13 already maintains the state as shown in FIG. Rotates only, and the motor 1 is reliably regulated by the brake band 20 mounted at a predetermined pressure on the outer circumferential surface of the lower part of the dehydration shaft 9, which serves as the rotating brake drum of the dehydration shaft 9 in the washing mode. By repeating the forward and reverse rotation, the rotor can be stirred to smoothly perform the washing process.

In addition, when the laundry is dewatered by the automatic washing machine, when the washing process proceeds and enters the dehydration mode, as shown in FIG. 7 by the drain valve operating solenoid (not shown), the brake lever 21 is rotated clockwise. The brake lever 21, which is pulled and is intimately coupled to the fixing pin 22 penetrating the upper portion of the housing 4, rotates about the fixing pin 22.

At the same time, the brake band 20 mounted on the lower part of the dehydration shaft 9, which is also used as a brake drum, is separated from the lower part of the dehydration shaft 9, and is hinged by the end of the brake lever 21 and the cam pin 15a. The cam 15 provided on the upper surface of (1) is slid in the radial direction so that the cam 15 is in the dewatering mode.

Then, after the draining is finished, the motor 1 starts to rotate at a low speed in the forward direction, and at this time, the actuator 13 in the state of FIG. 8 (b) is integral with the second coupling 11 having the arm 12 formed therein. The actuator 13 is neutralized in FIG. 8 (a) by a cam 15 having a guide groove 16 into which the guide protrusion 17 of the bottom of the actuator 13 is inserted while rotating with the washing shaft 8. When it is rotated to the position or more, it is maintained in the state as shown in FIG. 8 (c) and inserted into the insertion groove 19 formed in the lower end of the dehydration shaft 9 of the fixing protrusion 18 formed on one side of the lower part of the actuator 13. The rotational force is transmitted to the dehydration shaft 9 to perform a dehydration process.

Then, when dehydration is completed or the dehydration process is forcibly stopped during dewatering, when the drain valve operation solenoid is turned off to release the brake lever 21, the fixing pin between the brake lever 21 and the housing 4 ( The dehydration shaft 9 is stopped by the friction of the brake band 20 by the torsion spring 23 inserted in the shaft 22, and the cam 15 is also restored to the washing mode. Restoring to the same state as b) the washing process is terminated.

As described above, in the present invention, the motor 1, the washing shaft 8, and the dehydration shaft 9 for both the brake drum and the automatic washing machine driving unit are installed on the same axis, and are inserted into the washing shaft 8. An arm 12 is integrally formed in the coupling 11 to insert an actuator 13, and an insertion groove 19 into which the fixing protrusion 18 of the actuator 14 is inserted into the lower end of the dehydration shaft 9. Is formed to operate the actuator 13 with the cam 15 interlocked with the brake lever 21 so that the fixing projection 18 of the actuator 13 inserts the brake drum dehydration shaft 9 when washing. Only the washing shaft 8 is stirred left and right so that the washing shaft 8 is not inserted into the groove 19. When the dehydration is performed, the fixing protrusion 18 of the actuator 13 is inserted into the insertion groove 19 of the brake drum dehydrating shaft 9. It can be inserted to transmit the rotational force to the dehydration shaft (9) to perform the dehydration process smoothly, installation space due to the simple structure In addition to reducing the pressure, the clutch and declutching mechanisms during washing and dehydration can be efficiently performed, which is a useful invention that always improves the efficiency and reliability of the automatic washing machine.

Claims (5)

An arm integrally formed with the second coupling 11 which transfers the power of the motor shaft 7 to the washing shaft 8, and the dehydration shaft 9 which is combined with the brake 12 when dewatered by being coupled to the arm 12. And a cam (15) interlocked with an actuator (13) to be engaged and a brake lever (21) for moving the actuator (13) in the change of washing and dehydration modes. 2. The driving device according to claim 1, further comprising a spring (14) between the end of the arm (12) and the actuator (13) to maintain the elastic force during laundering and dehydration mode vacancy. The fully automatic washing machine according to claim 1, wherein an insertion groove (19) into which the fixing protrusion (18) formed on one side of the lower portion of the actuator (14) is inserted is formed in the lower end of the dehydrating shaft (9) for the brake drum. Drive. According to claim 1, wherein the cam 15 is installed so as to slide radially on the upper surface of the motor 1, the cam 15 is formed with a guide groove 16 is formed on the bottom surface of the actuator 13 Driving device for a fully automatic washing machine, characterized in that the guide projections (17) formed in the insertion. The driving device of a full automatic washing machine according to claim 1, wherein one end of the cam (15) is hinged to the end of the brake lever (21) and the cam pin (15a).