KR950004280B1 - Driving device for washer - Google Patents

Abstract

The driving unit includes a friction unit for transmitting the turning effect of a washing shaft to a drying shaft through friction and a control unit for controlling the friction unit so as to perform the wash by agitating the washing shaft from side to side in a washing mode and to rotate the washing and drying shafts simultaneously in a drying mode, thereby reducing a shock in transmitting power due to a simple construction of clutching and declutching when washing or drying and due to using a frictional force in transmitting a turning power.

Description

Drive of washing machine

1 is a cross-sectional view of a conventional washing machine.

2 is a cross-sectional view of a driving device of a conventional washing machine.

3 is a cross-sectional view of a driving device in a state of dehydration of the washing machine of the present invention.

4 is a sectional view of a driving device in a washing state of the washing machine of the present invention.

5 is a perspective view of a shifter taken from the drive unit of the washing machine of the present invention.

* Explanation of symbols for the main parts of the drawings

10l: motor shaft 102,103: coupling

104: washing shaft 105: de-shrink

106,107,110,112: Friction plate 108: Fixed shaft

109: through hole 111, 118: elastic member

113: shift 114: guide protrusion

115: housing 16: spiral groove

117: lever 119: bearing

120: Bushing

The present invention relates to a driving device for a washing machine, and more particularly, to intermittently drive a washing shaft and a dehydration shaft without a speed reduction by a gear or the like by the frictional force of a plurality of friction pieces formed between the washing shaft and the dehydration shaft.

In the conventional washing machine, as shown in FIG. 1, a washing / dehydrating tank 2 is rotatably installed inside the outer tub 1, and a rotor 3 is installed at an inner bottom of the washing / dehydrating tank 2. The jaw 2 and the annulus 3 were fastened to the dewatering shaft 6 and the washing shaft of the clutch 4 formed on the central bottom surface of the outer tub 1, respectively.

The motor 7 and the clutch 4 provided at the bottom shaft portion of the outer tub 1 are configured to be electrically driven by the V belt 10.

In addition, the clutch 4 will be described in detail. As shown in FIG. 2, a spring block 12 fastened to a lower portion of a gear shaft 11 directly receiving power from the V-belt pulley 9 and an upper portion thereof. It is installed on the outer circumferential surface of the lower dehydration shaft 14 integrated with the dehydration shaft 5 and the brake drum and gear housing 13 so that when the rotational driving force of the motor 7 is washed, the dehydration shaft 5 is not transmitted to the dehydration shaft 5 without washing. Is a clutch spring 15 for transmitting, a clutch boss 16 coupled to an outer circumferential surface of the clutch spring 15 and having teeth 10a formed on the outer circumferential surface thereof, and a drain valve acting solenoid installed at the side of the outer tub 1 ( It is rotatably installed at the lower end of the brake lever 17 linked to (not shown).

The can 18 caught on the teeth 10a of the clutch boss 16, the one-way spring clutch 19 for preventing the reverse rotation of the washing / dehydrating tank 2, and the power of the gear shaft 11 during washing It consists of the planetary gear 20 which decelerates and transmits to the washing shaft 6, and the brake band 21 etc. which wrap the outer peripheral surface of the gear housing 13 for brake drums.

The effect of the conventional washing machine configured as described above will be divided into washing time and dehydration time.

When washing, the forward rotational power of the motor transmitted to the clutch 4 by the V-belt is a direction in which the spring clutch 15 is wound, and thus the spring rotation is to be transmitted to the lower dehydration shaft 14 by the spring block 12. The clutch boss cam 18 pushes the teeth 16a of the clutch boss 16 provided on the outer circumferential surface of the spring clutch 15 to prevent the spring clutch 15 from being wound and to transmit power to the dewatering shaft 5. Prevent.

Therefore, the rotational power transmitted to the gear side 11 is decelerated through the planetary gear 20 to be transmitted to the washing shaft 6, and the rotor 3 which is fastened to the washing shaft 6 is rotated and washed.

In addition, since the reverse rotational power of the motor T is a direction in which the spring clutch 15 is released, the rotational power of the gear shaft 11 cannot be transmitted to the dehydration shaft 5 even at this time. It is delivered to the reduction gear washing shaft (6) and is washed by rotating the rotor (3) fastened to the washing shaft (6).

In addition, a one-way clutch 19 for preventing reverse rotation of the dewatering shaft 5 due to the reaction reaction torque, in which a reaction rotation torque is generated in the gear housing 13 during deceleration through the planetary gear 20, and a brake drum It is reliably regulated by the brake band 21 which wraps the outer peripheral surface of the gear housing 13 to a predetermined pressure.

In addition, when dehydration is performed, the rotational power of the motor 7 transmitted to the clutch 7 by the V-belt 10 is always rotated in the forward direction, so the spring clutch 15 is operated in the winding direction and thus the spring clutch 15 Valve contact solenoid is turned on to pull the lever 22 and close the cab 18 of the brake lever 17 interlocked with the lever 22 so as to be in close contact with the spring block 12. The rotational force of the spring block 12 is transmitted to the lower shaft 14 of the gear housing 13 by deviating from the tooth 10a of the 16 and at the same time releasing the brake band 21 from the outer circumferential surface of the gear housing 13. To rotate the gear housing 13 and the dewatering shaft 5 integrated with the gear housing 13 at high speed without deceleration, and thus, the laundry shaft 6 and the dewatering shaft 5 are rotated at high speed in one direction to dehydrate the laundry. Will be performed.

Then, when dehydration is completed or the dehydration process is forcibly stopped during the dehydration, when the drain valve operation solenoid is turned off and the brake lever 17 is released, the cam 18 has the teeth of the clutch boss 16. At the same time, the brake band 21 presses the outer circumferential surface of the gear housing 13 to switch to the washing mode, thereby stopping the rotation of the gear housing 13 serving as the brake drum. Dehydration tank 2 which is fastened through 13 and dehydration shaft 5 is also stopped.

The problem of the conventional washing machine driving device is that the motor 7 and the clutch are separately installed as described above, so that the power of the motor T is transmitted to the clutch 4 through the V belt 10 and the overall configuration is complicated. In addition, the structure of the clutch 4 having the function of selectively controlling the rotational power during washing and dehydration and the deceleration speed function is also very complicated, and there is a problem such that the power is lost when the rotational power is transmitted by the V-belt.

The present invention has been invented in view of this point, and the washing shaft, the deshrinkment shaft and the motor are configured on the same shaft, and a plurality of friction plates are formed between the washing shaft and the deshrink shaft, so that the surface pressure is not generated between the friction plates during washing. The washing was performed by stirring the washing shaft with the left and right sides, and during dehydration, the rotational force was transmitted to the dehydration shaft by the frictional force between the friction plates. It is possible to smoothly transmit power selectively to the rotor and the dehydration tank.

The washing machine driving apparatus of the present invention will be described in detail with reference to FIGS. 3 to 5.

Coupling 103 formed by coupling with the coupling 102 formed on the motor shaft 101 is formed to be rotated and spun coupled to the washing shaft 104 and the washing shaft 104 can be moved up and down In addition, the friction plate A 106 and the friction plate A 106 formed to be rotated like the washing shaft 104 and the friction plate A 106 in the dehydration shaft 105 supported by the washing shaft 104 by the bushing 120. The fixed shaft 108 and the fixed shaft formed by splines, which are coupled to the friction plate B 107 and the friction plate B 107 formed to be moved up and down while maintaining a predetermined distance and are moved up and down at the same time. The friction plate C 110 and the fixed shaft 108 fixed to the dehydration shaft 105 so that the through-hole 109 through which the 108 penetrates 108 and the elastic member 111 installed in the lower portion of the fixed shaft 108 are supported. At the bottom was formed a friction plate D (112) to prevent the dehydration shaft 105 is rotated during washing.

In order to prevent friction with the friction plate A 106, a shift 113 for pushing up the friction plate B 107 and a guide protrusion 114 formed at a circumference of the shift 113 are formed in the housing 115. An elastic member 118 is formed in the housing 115 to be inserted into the spiral groove 116 and to always hold the lever 117 integrally formed in the shift 113.

The housing 115 and the dehydration shaft 105 are connected by a bearing 119.

Effects of the washing machine driving apparatus of the present invention configured as described above will be described with reference to FIGS. 3 to 5.

The washing machine driving of the present invention is described as being divided into the operation of washing the laundry with the left and right stirring of the rotor and the dehydration operation in which the dehydration tank and the rotor rotate at the same speed.

When washing is performed, as shown in FIG. 3, the lever 117 integrally formed on the shift 113 is pushed by the elastic member 118, so that the shift 113 is formed along the spiral groove 116 formed in the housing 115. As it rises, it pushes the friction plate D 112 formed at the lower end of the fixed shaft 108.

As a result, the fixed shaft 108 on which the friction plate D 112 is formed is raised, and the friction plate A 106 fixed to the fixed shaft 108 and the friction plate A 106 are splined to the washing shaft 104. Keep away from friction.

In this state, the laundry is placed in the washing tank and the motor is operated. Accordingly, the rotational force of the motor shaft 101 is rotated by the washing shaft 104 by the coupling 103 coupled to the coupling 102 formed on the motor shaft 101. At this time, the washing shaft 104 is splined to the washing shaft 104. The combined friction plate A 106 is rotated. However, since the friction plate A 106 and friction plate B 107 do not face friction, the rotational force is not transmitted to the dewatering shaft 105.

Therefore, washing is performed while only the washing shaft 104 is rotated.

Then, since the shift 113 is pushed up, the friction plate D 112 formed at the multi-stage of the fixed shaft i08 is pushed, and the friction plate D 112 is pushed up to push the lower end of the dehydration shaft 105.

Therefore, the dehydration shaft 105 was to be fixed without being rotated.

When dehydrating the washed laundry, the shaft 113 is rotated by pulling the lever 117 of the shift 113 which is held and pushed by the elastic member 118 by a solenoid (not shown).

At this time, because the guide protrusion 114 formed on the periphery of the shift 113 is inserted into the spiral groove 116 formed in the housing 115, the shift 113 is lowered while rotating.

Accordingly, the shift 113 is separated from the friction plate D 112 formed at the lower end of the fixed shaft 108 and the friction plate D 112 is pushed by the elastic member 111. In this case, since the fixed shaft 108 fixed to the friction plate D 112 descends along, the friction plate B 107 fixed to the fixed shaft 108 also descends along the friction plate 107. This makes it easy to descend. When the friction plate B 107 descends as described above, the friction plate B 107 comes into close contact with the friction plate A 106 that is splined to the washing shaft 104 as shown in FIG.

At this time, when the washing shaft 104 is rotated, the rotational force is transmitted to the friction plate A (106) coupled to the washing shaft (104) by spline and the friction plate (107) coupled by the dehydration shaft (105) and the spline. .

Therefore, while the dehydration shaft 105 and the washing shaft 104 rotate together, dehydration is performed.

After the dehydration is completed or the dehydration process is forcibly stopped during the dehydration, when the drain valve operation solenoid is turned off to release the lever 117, the shift 113 is the spiral groove 116 and the bullet line installed on the inner surface of the housing 115 It moves back up with the restoring force of the rich man 118 to generate a friction force with the friction plate D (112) to impart a braking force to the desorption shaft (105).

The present invention can not only avoid the power loss and the complexity of the configuration by the V-belt between the conventional clutch and the motor, but also the structure of the clutching and de-clutching during washing and dehydration, and transfers the rotating power with frictional force. Therefore, not only reduces the impact force during power transmission, but also saves the space under the washing tank.

Claims (6)

A friction part for transmitting the rotational force of the tictic shaft to the dehydration shaft by friction, and when washing the friction part, only the washing shaft is stirred left and right to perform the washing, and when dehydration, the washing shaft and the dehydration shaft can rotate simultaneously. Washing machine drive, characterized in that configured to adjust the adjusting unit. The friction part of claim 1, wherein the friction part is splined to the washing shaft 104 to form a friction plate A 106 to be moved up and down, and the friction plate A 106 to be subjected to surface friction and desorption ( Washing machine drive device characterized in that consisting of a friction plate B (107) coupled to the spline 105 to move up, down. The fixed side 108 of claim 1 or 2, wherein the friction plate B 107 is fixed so as to be maintained at a predetermined interval between the friction plate B 107 and to be moved up and down. Washing machine drive device characterized in that the dehydration shaft 105 is formed on the demagnetizing plate C (110) on which the elastic member 111 is installed on the lower portion of the shaft (108). The method of claim 1, wherein the adjustment portion pushes up the friction plate D 112 formed on the lower end of the fixed shaft 108, the malleable friction plate D 112, and the surface friction between the friction plate A 106 and the friction plate B 107 In addition, the friction plate D (112) touches the lower end of the dehydration shaft (105) so that the dehydration side (105) is stopped and the shaft (113) operates up and down so that only the washing shaft (104) can be rotated. Washing machine drive, characterized in that consisting of. The spiral groove 116 of claim 1 or 4 is formed in the housing 115 to guide the shift of the shift 113 up and down, and the spiral groove 116 is formed at the periphery of the shift 113. The formed guide protrusion 114 is inserted into the washing machine driving apparatus, characterized in that the shift 113 is formed so as to rotate the upper and lower DL. The washing machine driving apparatus according to claim 1 or 4, wherein the lever (117) formed integrally with the shift (113) is formed to be supported by an elastic member (118).