KR950007075B1 - Driving apparatus for washing machine - Google Patents

Abstract

a washing shaft connected to the motor roller of a motor and more directly connected to an agitator through the housing of a clutch, and stirred in right and left directions according to the driving of the motor; a drying shaft fitted inserted on the washing shaft and serving as a break drum; a spiral band connected between the pins fixed on the drying shaft of an one-directional roller clutch fitted on the washing shaft so as to carry out a washing when it is incompletely winding, and a drying when it is completely winding; a break band provided on the drying shaft and restricting the rotation of the drying shaft after the completion of the washing and the drying; and a break lever for controlling the break band according to the on/off state of a break washer used for the drain valve operation.

Description

Drive of fully 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 drive device of the present invention.

4 is a state diagram at the time of washing and dehydration according to the present invention,

a is a cross sectional view when the motor rotates in the reverse direction when washing.

b is a cross-sectional view when the motor rotates in the forward direction during washing.

c is a cross-sectional view when the motor rotates in the forward direction when dewatering.

Figure 5 is a longitudinal sectional view showing another embodiment of the present invention.

6 is a state diagram during washing and dehydration according to FIG.

a is a cross sectional view when the motor rotates in the reverse direction when washing.

b is a cross-sectional view when the motor rotates in the forward direction during washing.

c is a cross-sectional view when the motor rotates in the forward direction when dewatering.

* Explanation of symbols for main parts of the drawings

1: motor 2: motor support member

3: clutch 4: housing

5: elastic member 7: motor shaft

8: washing shaft 9: dewatering

10: first coupling 11: second coupling

13: roller clutch 14: spiral band

15: pin 16: brake band

17 brake lever 19 bearing member

20,20a: sealing member 21: bushing

22: sprinkler clutch boss 23: sprinkler clutch

24: spring

The present invention relates to a driving apparatus of a fully automatic washing machine, and more particularly, to simplify the structure of the clutch installed in the fully 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 27 is rotatably installed inside the outer tub 26, and a rotor 28 is disposed in the lower portion of the washing / dehydrating tank 27. The dehydration tank (27) and the rotor (28) are installed to the dehydration shaft (9a) and the washing shaft (8a) of the clutch (3a) installed on the bottom surface of the outer tub 26, respectively, and the outer tub is fastened. A motor pulley 29 and a V-belt pulley 30 are respectively installed on the motor 1a and the clutch 3a provided on one side of the bottom surface of the 26, so that the V-belt 31 is wound and transmitted.

In addition, as shown in FIG. 2, the above-described clutch 3a is provided with a spring block 33 in a lower portion of the gear shaft 32 that receives power directly from the V-belt pulley 30 of the clutch 3a. On the outer circumferential surface of the lower dehydration shaft 9b of the upper portion of the spring block 33, the rotational driving force of the motor 1a is integrally formed with the upper dehydration shaft 9a and the brake drum combined gear housing 34. When dewatering without transmitting, the first clutch spring 35 for transmitting is installed.

In addition, the outer peripheral surface of the first clutch spring 35 is provided with a clutch boss 37 having a toothed portion 26 formed on the surface thereof, so as to engage the toothed portion 36 of the clutch boss 37 of the outer tub 26. Cam 39 is rotatably installed at the lower end of the lever 38, which is interlocked with the drain valve actuation solenoid (not shown) installed on the side portion, the upper part of the gear housing 34, the washing-use dehydration tank 27 One-way clutch 40 is installed to prevent the reverse rotation of the.

In addition, the gear housing 34 is provided with a planetary gear 41 for decelerating and transmitting the power of the gear shaft 32 to the washing shaft 8a at the time of washing, and the brake on the outer circumferential surface of the gear housing 34 for brake drums. The band 16a is attached and comprised.

In general, the driving device of the automatic washing machine is a washing mode in which the dehydration tank 27 is stopped and the laundry is washed by left and right stirring of the rotor 28 and the dehydration tank 27 and the rotor 28 as shown in FIG. ) Is divided into dehydration mode, rotating at high speed at the same speed.

Therefore, when washing laundry in 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 31 is the first clutch spring. Since the 35 is the winding direction, the spring block 33 should be transferred to the lower dehydration shaft 9a, but the cam on the teeth 36 of the clutch boss 37 installed on the outer circumferential surface of the first clutch spring 35 is cam. The 39 is engaged and pushed to prevent the first clutch spring 35 from being wound, thereby preventing power transmission to the dewatering shaft 9a.

Therefore, the rotational power transmitted to the gear shaft 32 is decelerated through the planetary gear 41 in the brake drum combined gear housing 34 and transmitted to the washing shaft 8a, and is fixed on the washing shaft 8a. The laundry is rotated by rotating the electron 28.

In addition, since the reverse rotational power of the motor 1a is the direction in which the first clutch spring 35 is released, the rotational power of the gear shaft 32 cannot be transmitted to the dehydration shaft 9a even at this time. Then, the washing shaft 8a is transferred to the washing shaft 8a, and the washing is performed by rotating the rotor 28 fixed on the washing shaft 8a.

In addition, the reaction rotation torque is generated in the gear housing 34 when decelerating through the planetary gear 41. The reverse rotation of the dewatering shaft 9a by the reaction rotation torque prevents reverse rotation. 40 and the brake vane 16a mounted on the outer circumferential surface of the brake drum combined gear housing 34 at a predetermined pressure prevent the rotation of the dewatering shaft 9a.

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 31 always rotates in the forward direction, the first clutch spring 35 is wound in the winding direction. The first clutch spring 35 and the spring block 33 are in close contact with each other, the valve actuating solenoid is turned on to pull the brake lever 17a, and the cam of the lever 38 interlocked with the brake lever 17a. 39 is disengaged from the teeth 36 of the clutch boss 37.

At the same time, the brake vane 16a is disengaged from the outer circumferential surface of the gear housing 34, so that the rotational force of the spring block 33 is integral with the gear housing 34 and the gear housing 34. ) Is rotated at a high speed without deceleration, so that the laundry shaft 8a and the upper dewatering shaft 9a are rotated at high speed in one direction to perform dehydration of the laundry.

Then, when dehydration is completed or the dehydration process is forcibly stopped during dewatering, when the drain valve actuating solenoid is turned off to release the lever 38, the cam 39 has the teeth 36 of the clutch boss 37. Caught in between.

At the same time, the brake band 16a compresses the outer circumferential surface of the gear housing 34 and switches to the washing mode, thereby stopping the rotation operation of the gear housing 34 serving as the brake drum. The dehydration tank 37 fastened through 9a is also stopped.

However, the driving apparatus of the conventional fully automatic washing machine has a structure in which the clutch 3a of the motor 1a is separately installed so that the power of the motor 1a is transmitted to the clutch 3a through the V-belt 31. This complex, the structure of the clutch 3a, which has a function of selectively intercepting and decelerating the rotational power during washing and dehydration, is also very complicated, and the power in transmitting the rotational power by the V-belt 31 is also very complicated. There was a problem such that a lot of loss occurs.

The present invention is to solve the above problems, it is possible to simplify the structure of the drive unit by integrally installing the clutch and motor of the automatic washing machine, as well as to selectively power the rotor and dehydration tank during washing and dehydration. It is an object of the present invention to provide a driving device of a fully automatic washing machine that can be delivered easily.

In order to achieve the above object, the present invention is coupled to the same axis as the motor shaft of the motor, the washing shaft is directly connected to the rotor through the housing of the clutch and stirred to the left and right according to the driving of the motor, and inserted into the washing shaft It is connected between the dehydration shaft to serve as a brake drum, the roller clutch in one direction inserted into the washing shaft and the pin fixed to the dehydration shaft to perform the washing within the range that does not completely wind up when washing, A spiral band for driving dehydration in a wound state, a brake band attached to the dehydration shaft for both brake drums and restraining rotation of the dehydration shaft at the end of washing and dehydration, and the brake band according to on and off of the drain valve operation solenoid. It is a driving device of a fully automatic washing machine composed of a brake lever to control.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 3 and 4 of the accompanying drawings.

Figure 3 is a longitudinal cross-sectional view showing the present invention, Figure 4 is a state diagram at the time of washing and dehydration according to the present invention, the motor support member on the outer peripheral surface of the motor (1) for transmitting power during washing and dehydration to the drive of the automatic washing machine (2) is installed, the clutch (3) is installed on the upper portion of the motor (1), the drive of the motor (1) between the end of the housing (4) of the clutch (3) of the motor support member (2) The elastic member 5 which absorbs the shock according to the insert 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 Agitator), the washing shaft (8) through the clutch (3), the washing shaft (8) serves as a brake drum The dehydration shaft 9 to be performed is inserted.

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 are inserted into the motor shaft 7. (10) (11) is coupled to transfer the rotational power of the motor (1) to the washing shaft (8) without impact, the E-ring (between the first, second couplings 10, 11) ( 12) is inserted.

In addition, a roller clutch 13 in one direction is inserted into the washing shaft 8 of the upper portion of the second coupling 11 in the dehydration shaft 9, and the spiral clutch 14 is provided with an elastic force in the roller clutch 13. One end of the) is fixed, the other end of the spiral band 14 is fixed to the dehydration shaft (9) with a pin (15), the lower part of the dehydration shaft (9) for the brake drum combined dehydration during washing and dehydration finish A brake band 16 for restraining rotation of 9 is mounted.

In addition, the brake lever 17, which is contacted and spaced apart from the brake band 16 according to the on / off of the drain valve actuation brake washing machine (not shown), is installed through the housing 4 side of the clutch 3. The pin 15a penetrating the upper portion of the housing 4 is fixed to the brake lever 17, and the torsion spring 18 is attached to the pin 15a between the brake lever 17 and the housing 4. This is installed.

In addition, a bearing member 19 for supporting the 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 washing shaft 8 of the dehydration shaft 9 are inserted. ), And between the upper end of the housing 4 and the dehydration shaft 9, a sealing member 20, 20a is installed to prevent leakage, respectively.

In addition, the end of the pin 15 for fixing the other end of the spiral band 14 to the dehydration shaft and the washing shaft 8 under the sealing member 20 between the upper end of the dehydration shaft 9 and the washing shaft 8 respectively. A bushing 21 for rotating the washing shaft 8 in the dehydration shaft 9 is provided.

As shown in FIGS. 3 and 4, the present invention configured as described above does not always know what state the spiral band 14 is in when the first washing is started. Therefore, washing is always performed in a reverse direction in which the spiral band 14 is released. Program the process and wash so that the rotation of the last motor 1 can end in the reverse direction in which the spiral band 14 is released so that the spiral band 14 can return to the initial position as shown in FIG. 4A at the end of washing. Program the process.

Therefore, when washing the laundry in the 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, and the torque is not transmitted to the spiral band 14 by the roller clutch 13 in one direction installed on the washing shaft (8) Since the spiral band 14 is in the unwinding direction, under any circumstances shown in FIGS. 4A to C, the rotor fixed to the upper side of the washing shaft 8 is returned to the same state as the 4A by the self restoring force of the spiral band 14. Reverse rotation.

Thereafter, in order to proceed with the washing process for stirring the rotor, the motor 1 rotates in the forward direction. In this case, the torque of the washing shaft 8 is transmitted to the spiral band 14 by the roller clutch 13 in one direction. And the spiral band 14 is wound in a winding direction, but the motor 1 rotates forward only to the state as shown in FIG. 4b, so that the torque of the washing shaft 8 is not directly transmitted to the dehydration shaft 9. Only the force due to the self-elasticity of the spiral band 14 is transmitted.

Rotation of the dehydration shaft 9 by this force is reliably prevented by the brake band 16 mounted on the outer circumferential surface of the lower part of the dehydration shaft 9 at a predetermined pressure.

Therefore, as the motor 1 repeats 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, since the rotational power of the motor 1 always rotates in the forward direction, the rotating torque transmitted to the washing shaft 8 by the roller clutch 13 in one direction is transferred to the spiral band 14. And the spiral band 14 is wound in the winding direction, and thus the spiral band 14 is continuously wound so as to be in the state as shown in FIG. 4C. The torque is directly transmitted to the dehydration shaft 9 by the tension of the spiral band 14, and the dehydration shaft 9 Spinning the combined washing and dehydration tank at a high speed to smoothly perform the dehydration process.

At this time, the brake band 16 is separated from the lower part of the dehydration shaft 9 by pulling the brake lever 17 while the brake washing machine (not shown) for the drain valve is turned on, and the rotational speed of the motor 1 is washed. Unlike this, it is much faster.

Then, when dehydration is completed or the dehydration process is forcibly stopped during dewatering, when the drain valve actuating solenoid is turned off and the brake lever 17 is released, the dehydration shaft 9 is stopped by friction of the brake band 16. However, since the motor 1 is not subjected to external braking force, the relative rotation according to the inertia of the motor shaft 7 with respect to the dehydration shaft 9 is the same as that of the motor 1 rotating in the reverse direction. As the spiral band 14 returns to the same state, the washing process is completed.

In addition, the thickness of the spiral band 14 is thicker than the portion in which the spiral band 14 is wound up until the end of the winding of the spiral band 14 until the spiral band 14 starts to maintain a straight line in the tangent direction. Elasticity can be efficiently maintained.

On the other hand, as shown in FIG. 5 and FIG. 6 as another embodiment of the present invention, a spring clutch boss 22 is provided in the dehydration shaft 9 which is also used as a brake drum, and the dehydration shaft 9 and the spring clutch are provided. A spring clutch 23 for transmitting a rotational force in one direction is installed between the bosses 22, and an upper end of the sprinkler clutch 23 is fixed to the dehydration shaft 9, and a lower end of the sprinkler clutch 23 is the spring clutch boss. It is fixed to (22), a spring 24 is provided between the dehydration shaft 9 and the outer peripheral surface of the lower portion of the spring clutch boss 22 to regulate the power transmission of the spring clutch 23 during washing.

In addition, one end of the spiral band 14 is provided with an elastic force is fixed to the roller clutch 13, the other end of the spiral band 14 is configured to be fixed by the pin 15 to the sprinkler clutch 22, The rest can be produced and used in the same structure as the present invention.

Therefore, when washing the laundry in the 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. Is transmitted to the washing shaft 8 without impact by the second coupling 11, and the torque is not transmitted to the spiral band 14 by the one-way roller clutch 13 installed on the washing shaft 8. Since the band 14 is in the unwinding direction, under any circumstances shown in FIGS. 6A to C, the rotor directly connected to the upper end of the washing shaft 6 is returned to the same state as in FIG. 6A by the self restoring force of the spiral band 14. In this case, the spring clutch 23 is installed between the dehydration shaft 9 and the sprinkled clutch boss 22 to transmit the rotational force in one direction, so that the power of the washing shaft 8 is dehydrated. 9) will not be delivered.

Thereafter, in order to proceed with the washing process for stirring the rotor, the motor 1 rotates in the forward direction. In this case, the torque of the washing shaft 8 is transmitted to the spiral band 14 by the roller clutch 13 in one direction. It is transmitted and is wound because the spiral band 14 is wound, but the motor 1 rotates in the forward direction only to the state as shown in FIG. 6b, so that the washing shaft 8 has a torque installed in the dehydration shaft 9. Instead of being transmitted directly to the clutch boss 22, only the force due to the elasticity of the spiral band 14 is transmitted.

This force is installed between the dehydration shaft 9 and the outer circumferential surface of the lower portion of the sprinkler clutch 22 to regulate the power transmission of the sprinkler 23 installed between the dehydration shaft 9 and the sprinkler clutch 22 during washing. Since the spring clutch boss 22 is kept smaller than the spring force of the spring 24 to release the spring clutch 23, the rotational torque of the washing shaft 8 is not transmitted to the dehydration shaft 9. .

The rotation of the dewatering shaft 9 in the washing mode is reliably regulated by the brake band 16 mounted at a predetermined pressure on the outer circumferential surface of the lower part of the dehydrating shaft 9 which is also used as a brake drum. Therefore, as the motor 1 repeats the forward and reverse rotation, the rotor can be agitated to smoothly perform the washing process.

In addition, when the laundry is dewatered by the fully automatic washing machine, since the rotational power of the motor 1 always rotates in the forward direction, the rotating torque transmitted to the washing shaft 8 by the roller clutch 13 in one direction is transmitted to the spiral band 14. The spiral band 14 is wound in a winding direction, and thus the spiral band 14 is continuously wound so that the spiral band 14 is in the same state as in FIG. 6c. Since the spring 24 rotates beyond the elastic force, the spring clutch 23 is wound so that the rotational power of the laundry shaft 8 is transmitted to the dehydration shaft 9 so that the washing combined and dewatering tank directly connected to the dehydration shaft 9 is provided. By spinning at a high speed to facilitate the dehydration process.

At this time, the brake band 16 is separated from the dehydration shaft 9 by pulling the brake lever 17 while the brake washing machine (not shown) for the drain valve is turned on, and the rotational speed of the motor 1 is washed. Unlike this, it is much faster.

Then, when dehydration is completed or the dehydration process is forcibly stopped during dewatering, when the drain valve actuating solenoid is turned off and the brake lever 17 is released, the dehydration shaft 9 is stopped by friction of the brake band 16. However, since the motor 1 does not receive external braking force, the relative rotation according to the inertia of the motor shaft 7 with respect to the dehydration shaft 9 is the same as that of the motor 1 rotating in the reverse direction. The washing process is completed as the spiral band 17 returns in the same state as (A).

On the other hand, when the rotor is a pulsator type, the spiral band 14 is not wound completely within the range of about 2-5 rotations, so that the spiral band 14 is moved from the washing shaft 8 to the dehydration shaft 9. Since only the torque due to its elasticity is transmitted, the left and right rotations of the laundry shaft 8 are possible.

In addition, when the rotor is an agitator type, the spiral band 14 is not wound completely within the range of about 1 / 3-1 rotation, so that the spiral band (from the washing shaft 8 to the dehydration shaft 9) ( 14) Since only the torque due to its elasticity is transmitted, left and right rotation of the washing shaft 8 is possible.

On the other hand, the ratio of the thickness and width of the spiral band 14 is in the range of about 0.1-0.5, it is possible to reliably transfer the torque during dehydration while preventing torque transmission due to its elasticity as possible during washing.

As described above, in the present invention, the motor 1, the washing shaft 8 and the dewatering shaft 9 of the fully automatic washing machine driving unit are installed on the same axis, and are spirally formed between the washing shaft 8 and the dewatering shaft 9. Since the band 14 is installed, the rotor can be washed by stirring left and right within the range in which the spiral band 14 is not wound at the time of washing, and continues in the direction in which the spiral band 14 is wound at the time of dehydration. It is a very useful invention to improve the efficiency and reliability of the fully automatic washing machine because it can be carried out by spinning to smoothly dewatering, and can efficiently perform clutching and declutching during washing and dehydration due to the simple structure.

Claims (11)

The washing shaft 8 coupled to the same shaft as the motor shaft 7 of the motor 1 and directly connected to the rotor through the housing 4 of the clutch 3 and stirred left and right according to the driving of the motor 1. ), A dehydration shaft 9 inserted into the washing shaft 8 and serving as a brake drum, and fixed to the dewatering shaft 9 of the roller clutch 13 in one direction inserted into the washing shaft 8. Connected between the pins 18, the spiral band 14 for driving the deshrinkment 9 in a state that the washing is carried out within a range that is not completely wound during washing and is completely wound during dehydration, and the brake drum combined A brake that is attached to the contraction 9 to restrain the rotation of the dehydration shaft 9 at the end of washing and dehydration, and a brake that controls the brake band 10 in accordance with the on / off of the brake washing machine for drain valve operation. Drive of the automatic washing machine, characterized in that consisting of a lever (17). According to claim 1, The dehydration shaft (9) is provided with a sprinkled clutch boss (2), Between the dehydration shaft (9) and the sprinkler clutch 22, the sprinkler clutch (23) for transmitting the rotational force in one direction is Drive of installed automatic washing machine. According to claim 1 or 2, wherein one end of the spiral band 14 is fixed to the roller clutch 13, the other end of the drive of the automatic washing machine fixed to the sprinkler clutch 22 with a pin 15 Device. The driving device of a fully automatic washing machine according to claim 1, wherein a spring (34) is provided between the dehydration shaft (9) and the outer circumferential surface of the lower portion of the sprinkler clutch boss (22) to regulate the power transmission of the sprinkler clutch during washing. The elastic member (5) according to claim 1, wherein an elastic member (5) is absorbed between the motor support member (2) of the motor (1) and the end of the housing (4) of the clutch (3). Driving device of a fully automatic washing machine. The method of claim 1, wherein the first coupling 10 is inserted into the motor shaft 7 of the motor 1, and the second coupling 11 is inserted into the end of the washing shaft 8. The driving device of the fully automatic washing machine is to transmit the rotating power of the motor (1) to the washing shaft (8) without impact. The bearing member (19) 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 a washing member (8) between the washing shaft (8) and between the housing (4) top and the dehydration shaft (9), respectively. 2. A drive system according to claim 1, wherein a bushing (21) is provided so that the laundry shaft (8) is rotatably supported within the dehydration shaft (9). The method of claim 1, wherein the spiral band 14 is driven until the outer band portion is thicker than the portion wound around the inside until the spiral band 14 is maintained in a straight line to maintain elasticity Device. The helical band 14 is not wound completely within the range of about 2-5 revolutions when the rotor is an outer winding type, and the helical band 14 is 1 / 3-1 rotation when the rotor is stirred. Driving device of the fully automatic washing machine, so that the left and right rotation of the washing shaft (8) can be rotated so as not to be wound completely within the range of the degree. 10. The method of claim 1 or 9, wherein the ratio of the thickness and width of the spiral band 14 is in the range of about 0.1-0.5 to prevent torque transmission due to the self-elasticity of the washing machine spiral band 14, dehydration Drive of fully automatic washing machine designed to efficiently deliver torque.