KR950007079B1 - Driving apparatus for washing machine - Google Patents

Abstract

a washing shaft hub being a flexible coupling having an arm in one body; a brake drum connected to a drying shaft fitted on the washing shaft, and having a ratchet and a space; an actuator hingedly connected to the arm so as to be in the space and having a ratchet connected to the ratchet of the brake drum; and a cam sliding in the radial direction by a brake lever for moving the actuator during the change of washing and drying modes.

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.

3 is a longitudinal sectional view showing a driving device of the present invention fully automatic washing machine.

Figure 4 is a perspective view of the arm of the laundry shaft hub according to the present invention.

Figure 5 is a perspective view of the actuator according to the present invention.

6 is a perspective view of a cam according to the present invention.

7 is a perspective view of a brake drum according to the present invention.

8 is a plan view showing the operating state of the brake band according to the present invention, (a) is a state at the time of washing, (b) is a state diagram at the time of dehydration.

9 is an operating state diagram of the actuator according to the present invention, (a) is a state diagram at the neutral position, (b) is a state diagram at the washing position, (c) is a state diagram at the dehydration position.

* Explanation of symbols for main parts of the drawings

1: motor 7: motor shaft

8: washing shaft 10: brake drum

10a, 16a: Ratchet 11: Deshrink

12: motor shaft coupling 13: arm

14: laundry shaft hub 16: actuator

16b: first projection 16c: second projection

17: spring 18: brake lever

21: Cam Guide 23: Cam

23a: Campin S: Space

C: contact surface

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

As shown in FIG. 1, a conventional fully automatic washing machine is rotatably provided with a washing dehydration tank 28 inside the outer tub 27, and a rotor 29 is disposed in the lower part of the washing dehydration tank 28. The dehydration tank 28 and the rotor 29 are installed on the motor 1a and the clutch 3a installed at one side of the bottom surface of the outer tank 27, respectively, and the motor pulley 30 and the V-belt pulley 31 are respectively installed. Is installed 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 a lower portion of the gear shaft 33 that receives power directly 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 integrally formed with the upper dehydration shaft 9a and the brake drum combined gear housing 35. When dehydration without transmission, the first clutch spring 36 is transmitted to the dehydration shaft.

In addition, a clutch boss 38 having teeth 37 formed on a surface thereof is provided on an outer circumferential surface of the first clutch spring 36, and the outer thread 27 is engaged with the teeth 37 of the clutch boss 38. The cam 40 is rotatably installed at the lower end of the lever 39 linked to the drain valve actuation solenoid (not shown) installed at the side portion, and the washing / dehydration tank 28 is installed at the upper portion of the gear housing 35. One-way clutch 41 for preventing the reverse rotation of the.

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 combined gear housing 35. The band 17a is attached and comprised.

In general, the driving device of the automatic washing machine is a washing mode in which the dehydration tank 28 is stopped and the laundry is washed by left and right stirring of the rotor 29 and the dehydration tank 28 and the rotor 29 as shown in FIG. ) 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 power of the motor 1a transmitted to the clutch 3a as the V-belt 32 is the first clutch spring. Since the direction of winding 36 is to be transmitted to the lower dehydration shaft 9a by the spring block 34, 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 and pushed to prevent the first clutch spring 36 from being wound, thereby preventing power transfer to the dewatering shaft 9a.

Therefore, 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 transmitted 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.

In addition, a reaction rotation torque is generated in the gear housing 35 when the speed decreases through the planetary gear 42, and the one-way clutch 41 prevents reverse rotation of the dewatering shaft 9a by the reaction rotation torque. The rotation of the dehydration shaft 9a is prevented by the brake band 17a mounted to the outer circumferential surface of the brake drum combined gear housing 35 at a predetermined pressure.

In addition, when the laundry is dewatered by the automatic washing machine, since the rotational power of the motor 1a transmitted to the clutch 3a as the V-belt 32 always rotates in the forward direction, the first clutch spring 36 is wound in the winding direction. In operation, the first clutch spring 36 is in close contact with the spring block 34, the valve actuating solenoid is turned on to pull the brake 18a, and the cam of the lever 39 interlocked with the brake lever 18a. 40 is separated from the toothed portion 37 of the clutch boss 38.

At the same time, the brake band 17a is separated from the outer circumferential surface of the gear housing 35 so that the rotational force of the spring block 34 is integral with the gear housing 35 and the gear housing 35. As it rotates at a high speed without deceleration, 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, when the drain valve actuating solenoid is turned off to release the lever 39, the cam 40 has a clutch boss 38 with a toothed portion 37. Caught in between.

At the same time, as the brake valve 17a compresses the outer circumferential surface of the gear housing 35 to switch to the washing mode, the rotation of the gear housing 35 serving as the brake drum is stopped while the gear housing 35 and the upper detachment are stopped. The dehydration tank 28 fastened through the contraction 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. The complicated structure of the clutch 3a, which has a function of selectively controlling the rotational power at the time of washing and dehydration and a function of reducing the speed, is also very complicated, and is equal in the transmission of the rotational power by the V-belt 32. There was a problem such that a lot of 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 coupled to the motor shaft coupling of the motor shaft to transfer the rotational power of the motor to the laundry shaft and the laundry shaft hub is a flexible coupling that the arm is integrally formed, and is inserted into the laundry shaft Brake drum combined with dehydration and ratchet and incision to form a space, an actuator hinged to the arm is positioned in the space and connected to the ratchet of the brake drum is formed, and when the actuator is washed and converted to the dehydration mode It is a driving device of a fully automatic washing machine composed of a cam sliding in a radial direction in conjunction with the moving brake lever.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 3 to 9.

Figure 3 is a longitudinal sectional view showing the present invention, Figure 4 is a perspective view showing the arm of the washing shaft hub according to the invention, Figure 5 is a perspective view showing the actuator according to the invention, Figure 6 is a cam according to the invention 7 is a perspective view showing a brake drum according to the present invention, FIG. 8 is an operating state of the brake band during washing and dehydration according to the present invention, and FIG. 9 is an operating state diagram of the actuator according to the present invention. The driving unit of the washing machine is a low speed high torque, the motor support member 2 is installed on the outer circumferential surface of the motor (1) for transmitting power to enable high speed rotation when dewatering, the motor support member (2) and the clutch (3) Between the ends of the housing 4 of the elastic member 5 is inserted into the shock absorbing effect of the driving of the motor 1 is fixed as the fastening member (6).

In addition, a washing shaft 8 which is directly connected to a pulsator or agitator and penetrates the clutch 3 installed on the bottom surface of the outer tub 9 is connected to the upper portion of the motor shaft 7 of the motor 1, (8) is inserted into the dehydration shaft 11 is coupled to the brake drum 10 at the end.

In addition, a motor shaft coupling 12 is inserted into the motor shaft 7 of the motor 1, and a washing shaft hub 14 which is a flashable coupling having an arm 13 integrally formed at the end of the washing shaft 8. Is inserted into the motor shaft coupling 12 and the washing shaft hub 14 is coupled to transfer the rotational power of the motor (1) to the washing shaft (8) without impact, the arm of the washing shaft hub (14) An actuator (16) is hinged to the pin (15), and between the arm (13) and the actuator (16) is attached or detached from the brake drum (10) during operation of the actuator (16). A plurality of springs 17 for holding are connected.

In addition, the brake drum 10 is formed with a space (S) in which one side is cut and the actuator 16 is installed on the bottom circumferential surface, and one end of the flange formed on the bottom circumferential surface of the brake drum 10. Ratchet (10a) is connected to the ratchet (16a) on the (), the circumferential surface of the brake drum 10 is equipped with a brake band (17) for restraining the rotation of the dehydration shaft 11 at the end of washing and dehydration One end is fixed to the housing 4 and the other end is fixed to the brake lever 18 with a pin 19.

In addition, the lever pin 20 penetrating the upper portion of the housing 4 of the clutch 3 is fixed through the brake lever 18 and the lower end of the housing 4, and the brake lever 18 and the housing 4 are fixed. The torsion spring 22 is inserted and supported in the lever pin 20 therebetween, and the cam 23 is radially slid by the brake lever 18 so as to penetrate the brake lever 18. It is hinged to the campim 23a, the contact surface (C) is formed on the circumferential surface of the cam 23, the actuator (16) at the front of the cam 23 during washing and dehydration of the first and second projections (one side forward) 16b) The protrusion 23b which is connected to 16c is formed.

And, between the upper part of the washing shaft (8), the upper part of the dehydrating shaft (11), and the lower end of the washing shaft (8) and the brake drum (10), the bushing 24 for supporting the rotating shaft 8 in the dehydrating shaft (11), respectively. ) Is installed, and a bearing member 25 for supporting the rotation of the dehydration shaft 11 is mounted between the dehydration shaft 11 and the upper and lower ends of the housing 4, and the upper end and the demounting of the housing 4. Between the contractions 11 is provided with a sealing member 26 to prevent leakage.

The present invention configured as described above, as shown in FIGS. 3 to 9, the arm is formed integrally with the washing shaft hub 14, which is a flexible coupling inserted at the end of the washing shaft 8 when the first washing is started. Since the actuator 16 hinged to the 13 and the brake drum 10 coupled with the dehydration shaft 11 inserted into the laundry shaft 8 are not known, the actuator 16 is always connected. The washing process is programmed to start the washing in a reverse direction in which the ratchet 10a formed at one end of the flange on the bottom circumference of the ratchet 16a and the brake drum 10 are spaced apart from each other.

Therefore, when washing laundry with a full automatic washing machine, the reverse rotational power of the motor 1 is the end of the motor shaft coupling 12 inserted into the motor shaft 7 of the motor 1 and the end of the washing shaft 8 coupled thereto. The flexible coupling of the washing shaft hub 14 is transmitted to the washing shaft 8 without impact to rotate the rotor directly connected to the washing shaft (8).

At this time, the actuator 16 hinged to the arm 13 integrally formed in the washing shaft hub 14 may be in the state of washing and dehydration mode of FIG. 9b or c, but in the rotational direction of the motor 1. In this reverse direction, the cam lever 23 is hinged to the cam guide 21 by the cam pin 23a penetrating the brake lever 18, and the brake lever 18 is not operated when the cam 23 slides in the radial direction by the brake lever 18. Since the cam 23 is in the dehydration mode of FIG. 9D, the cam 23 enters the washing mode of FIG.

At this time, the operation of the cam 23 pushes the first projection 16b on one side of the actuator 16 by the operation of the cam 23 only to the neutral position or more of FIG. 9a, and the washing shaft hub 14 as shown in FIG. 9b. The spring 17 provided between the arm 13 and the actuator 16 of the washing force is generated because the spring 17 provided by the elastic force tries to maintain the state as shown in FIG. Power is not transmitted to the dehydration shaft (11).

Thereafter, in order to proceed with the washing process for stirring the rotor, the motor 1 rotates in the forward direction. At this time, the state of the actuator 16 is already in the state of FIG. 9b, that is, the ratchet 16a of the actuator 16 and the state of FIG. Since the ratchet 10a of the brake drum 10 is kept in a spaced state, only the washing shaft 8 is rotated, and the rotation of the dehydration shaft 11 in the washing mode is performed at a predetermined pressure on the outer circumferential surface of the brake drum 10. Since the motor 1 is reliably regulated by the mounted brake band 17, the rotor can be stirred and the washing process can be smoothly performed by repeating the forward and reverse rotation.

In addition, when the laundry is dewatered by the automatic washing machine, when the washing process proceeds and enters the dehydration mode, the brake lever 18 is in the state shown in FIG. 8A by the drain valve opening / closing solenoid (not shown). The brake lever 18, which is pulled clockwise and hinged to the lever pin 20 penetrating the upper portion of the housing 4, rotates about the lever pin 20.

At the same time, the brake band 17 mounted on the brake drum 10 is spaced apart from the brake drum 10, and the cam is hinged to the cam guide 21 by a cam pin 23a penetrating the brake lever 18. The 23 slides in the radial direction so that the cam 23 enters the dewatering mode.

Subsequently, when the drainage is finished and the motor 1 starts the low speed rotation in a forward direction in which the ratchet 16a on the actuator 16 and the ratchet 10a formed at one end of the flange of the lower end surface of the brake drum 10 are connected, the actuator (16) The second projection 16c on one side and the projection 23b on the upper part of the cam 23 are connected and lifted up to the neutral position of FIG. 9a, so that the ratchet 16a of the actuator 16 and the brake drum 10 Ratchet 10a is connected to the dehydration mode of FIG. 9b, and this state is continuously maintained by the elastic force of the spring 17 connected between the actuator 16 and the arm 13 of the washing shaft hub 14. Will be performed.

Then, when dehydration is completed or the dehydration process is forcibly stopped during dewatering, when the drain valve opening solenoid is turned off to release the brake lever 18, the lever pin between the brake lever 18 and the housing 4 The dehydration shaft 11 is stopped by the friction of the brake band 17 by the torsion spring 22 inserted into the cam 20, and the cam 23 is also restored to the washing mode so that the actuator 16 is in the state shown in FIG. The washing process is terminated as it is restored.

As described above, according to the present invention, the motor 1 and the clutch 3 of the automatic washing machine are integrally installed on the same axis, thereby simplifying the structure of the driving mechanism and reducing the installation space. Since the clutching and declutching functions can be performed efficiently, it is a very useful invention that improves the efficiency and reliability of the automatic washing machine.

Claims (4)

The motor shaft 7 is coupled to the motor shaft coupling 12 to transmit the rotational power of the motor 1 to the laundry shaft 8, the washing shaft hub 14 is a flexible coupling in which the arm 13 is integrally formed. ), A brake drum 10 coupled to the dehydration shaft 11 inserted into the laundry shaft 8 and the ratchet 10a and the incision is formed to form a space S, and hinged to the arm 13. An actuator 16 located in the space S and connected to the ratchet 10a of the brake drum 10, and an actuator 16 formed thereon, and a brake lever for moving the actuator 16 during the conversion of the washing and dehydration modes. 18) the driving device of the fully automatic washing machine, characterized in that consisting of a cam (23) which is interlocked in the radial direction. The apparatus of claim 1, wherein a plurality of springs 17 are connected between the arm 13 and the actuator 16 to maintain a detachable state with the brake drum 10 when the actuator 16 operates. . According to claim 1, wherein the contact surface (C) is formed on the circumferential surface of the cam 23, the upper and upper projections of the first and second projections (16b) (b) (1) in front of the actuator 16 during washing and dehydration ( A driving device for a fully automatic washing machine having a projection (23b) connected to 16c). 2. The driving apparatus of a fully automatic washing machine according to claim 1, wherein the cam (23) is hinged to the cam guide (21) by a cam pin (23a) passing through the brake lever (18).