KR200221492Y1 - Apparatus for operating clutch of washing machine - Google Patents

Abstract

The present invention relates to a clutch operating device of a washing machine for operating a wire connected to a clutch lever of a clutch intermittently interposing a first drive shaft and a second drive shaft of a gear device. The washing machine of the present invention includes a wire connected to a clutch lever of a clutch intermittent between the first drive shaft and the second drive shaft of the gear device. The clutch operating device includes a drive means installed in the housing and rotating the drive shaft in both directions, a gear train installed to transmit a driving force to the housing, a drive pulley provided to operate the wire in cooperation with the gear train; Position detection means for detecting the rotational position of the drive pulley, and a control unit for controlling the drive of the drive means in accordance with the signal of the position detection means. According to the present invention, by cooperating the gear train and the driving pulley which transmits the driving force of the driving means rotating in both directions, by operating the wire connected to the clutch lever of the clutch, the structure is simple, low cost, assembly Can improve the sex. In addition, there is an effect that the driving force of the driving means is accurately transmitted to prevent malfunction and to improve the reliability.

Description

Clutch operating device of washing machine {APPARATUS FOR OPERATING CLUTCH OF WASHING MACHINE}

The present invention relates to a washing machine, and more particularly, to a clutch operating device of a washing machine for operating a wire that is connected to the clutch lever of the clutch to control the first drive shaft and the second drive shaft of the gear device.

In general, a washing machine is a device that automatically performs a series of washing, rinsing, and dehydration by putting laundry, water, and an appropriate amount of detergent in a washing tank and giving the impact of mechanical water flow to the laundry.

Looking at the example of such a washing machine, the reservoir is installed in the cabinet, the washing tank is installed in the interior of the reservoir to be rotatable. At the bottom of the washing tank, a pulsator or agitator is installed to generate water by rotating by a gear device that reduces and regulates the driving force of the motor. The gear unit includes a combination of planetary gears and ring gears for decelerating driving force, a first drive shaft for rotating the pulsator, a second drive shaft for rotating the washing tub, and rotation of one of the first and second drive shafts. It is composed of a clutch to control the driving force to be made.

Therefore, when the washing function of the washing machine is set, the first drive shaft and the pulsator are rotated by a gear device that transmits the driving force of the motor, and the impact of water current generated by the rotation of the pulsator is applied to the laundry while washing the laundry. This is done. When the laundry is dewatered, the second drive shaft and the washing tank are rotated by the gear device, and the water in the washing tank and the water wetted by the laundry are drained out through the holes of the washing tank by the rotation of the washing tank to perform dehydration.

The washing machine having such a configuration is provided with a synchronous motor for operating the clutch lever for the washing and dehydration operation or for operating the drain valve for the drainage operation. The synchronous motor is operated by the clutch lever and the wire of the clutch. Connected with

Looking at the configuration of the synchronous motor disclosed in the Japanese Utility Model Publication No. 2000-14473 of the present applicant, the DC motor to drive in one direction, the clutch gears for intermittently transmitting the driving force of the DC motor, and the clutch gears to It consists of a solenoid and a pulley that engages with the clutch gear to wind or unwind the wire.

This technology controls the clutch gears that transmit the driving force of the DC motor by driving the solenoid, so that the clutch lever of the clutch is operated by winding or releasing the wire by the pulley. However, the clutch gears and the solenoids are very complicated in structure, which is expensive and the assembly is greatly deteriorated. In addition, not only wear of the clutch gears is severely generated, but also malfunctions of the solenoid and the clutch gears are generated, and thus there is a problem that the reliability is significantly reduced.

The present invention is devised to solve various problems and disadvantages of the prior art as described above, the object of the present invention is a simple operation, low cost, clutch operating device of the washing machine that can improve the assembly To provide.

Another object of the present invention is to provide a clutch operating device of a washing machine that can accurately transfer the driving force of the driving means to the clutch to prevent malfunction and improve reliability.

A feature of the present invention for achieving the above object is a clutch operating device of a washing machine for operating a wire that is connected to the clutch lever of the clutch to control the first drive shaft and the second drive shaft of the gear device, the housing; A driving means fixedly installed in the housing, the driving means rotating the drive shaft in both directions; A gear train installed to transmit a driving force of the driving means to the housing; A drive pulley provided to operate the wire in cooperation with the gear train; Position detecting means for detecting a rotational position of the drive pulley; In the clutch operating device of the washing machine composed of a control unit for controlling the driving of the drive means in accordance with the signal of the position detecting means.

1 is a cross-sectional view showing a washing machine to which the clutch operating device of the present invention is applied;

Figure 2 is a perspective view showing the housing, the drive means, the gear train and the drive pulley separately of the clutch operating device according to the present invention,

3 is a plan view partially showing a clutch operating device of the present invention,

Figure 4 is a partial cross-sectional view of the clutch operating device of the present invention,

Figure 5 is a plan view partially showing a first embodiment of the position detecting means in the clutch operating device according to the present invention,

Figure 6 is a plan view partially showing a second embodiment of the position sensing means in the clutch operating device according to the present invention,

7 is a plan view partially showing a third embodiment of the position detecting means in the clutch operating device according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

12: reservoir 14: washing tank

16: pulsator 18: motor

20: gear device 22: clutch

24: wire 30: housing

50: drive means 52: drive shaft

60: gear train 90: position detection means

92: arc-shaped cutout 94: locking portion

96: cam curve 98: switch

100: operating unit 102: first micro switch

104: second microswitch 110: control unit

Hereinafter, a preferred embodiment of the clutch operating device of the washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 7 are views for explaining the clutch operating device of the washing machine according to the present invention.

First, referring to FIG. 1, in the washing machine of the present invention, a water storage tank 12 is installed inside a cabinet 10 constituting an exterior, and a washing tank 14 is rotatably installed inside the water storage tank 12. . A plurality of holes 14a communicating with the water storage tank 12 are formed around the washing tank 14, and the pulsator 16 is rotatably installed at the bottom of the washing tank 12.

In addition, the bottom of the reservoir 12 is provided with a gear device 20 for transmitting the driving force of the motor 18 to be driven forward and backward. The gear device 20 rotates the washing tank 14 by surrounding a combination of planetary gears and ring gears (not shown), a first drive shaft 20a for rotating the pulsator 16, and a first drive shaft 20a. The second drive shaft 20b and a clutch 22 for intermittent driving force to rotate one of the first and second drive shafts are provided. A wire 24 is operatively connected to the clutch lever 22a of the clutch 22.

2 to 4, the clutch operating device of the present invention includes a housing 30. The main body 32 of the housing 30 is formed with a storage space 34 for receiving the components, the storage space 34 of the main body 32 is covered by a cover 36, the cover 36 The through hole 38 is formed at one side of the lateral side to be coaxial with the fourth drive shaft 46. As shown in FIG. 1, the housing 30 can be assembled by fastening screws to the bottom of the reservoir 12.

First to fourth fixed shafts 40, 42, 44, and 46 are fixed to the storage space 34 of the main body 32 of the housing 30. The driving means 50 is fixedly installed in the storage space 34 of the housing 30 at a position close to the first fixed shaft 40, and the driving means 50 moves the driving shaft 52 in both directions, that is, forward and backward. Rotate to In the embodiment of the present invention, the driving means 50 may be composed of a DC motor, an AC motor and a stepping motor.

In addition, the driving force of the driving means 50 is decelerated and transmitted to the driving pulley 80 for operating the wire 24 by the gear train 60. The gear train 60 is centered on the worm gear 62 mounted on the drive shaft 52 of the drive means 50 and the first, second and third fixed shafts 40, 42, 44 of the housing 30. First, second and third two-stage intermediate gears 64, 66, and 68 mounted to rotate respectively, and the main gear 70 mounted to rotate about the fourth fixed shaft 46 of the housing 40. Consists of The atmospheric gear portion 64a of the first two-stage intermediate gear 64 meshes with the worm gear 62 and the small gear portion 64b meshes with the atmospheric fish portion 66a of the second two-stage intermediate gear 66. The small gear portion 66b of the second two-stage intermediate gear 66 meshes with the standby gear portion 68a of the third two-stage intermediate gear 68, and the small gear portion 68b of the third two-stage intermediate gear 68 is a main gear ( 70). On one side of the main gear 70 is formed a shaft portion 70a which protrudes through the through hole 38 of the housing 30. The drive pulley 80 is mounted to the shaft portion 70a of the main gear 70, and one end of the wire 24 is fixed to the drive pulley 80 so that it can be wound or unwound.

In the clutch operating device of the present invention having such a configuration, when the driving shaft 52 is rotated in both directions by the driving of the driving means 50, the rotational force of the driving shaft 52 is the worm gear 62 of the gear train 60. The first to third two-stage intermediate gears (64, 66, 68) and the main gear 70 is transmitted to the drive pulley 80, the wire 24 is wound by the rotation of the drive pulley 80 or The clutch lever 22a of the clutch 22 is operated while being released. Therefore, the driving force of the driving means 50 is accurately transmitted to the driving pulley 80 by the gear train 60, whereby the clutch lever 22a of the clutch 22 can also be operated correctly by the operation of the wire 24. have. In addition, since the components of the drive means 50 and the gear train 60 are reduced, the structure is simplified, not only can the assembly performance be improved, but also the cost is low.

3 and 5 together, the clutch operating device of the present invention is driven by processing the position detection means 90 for detecting the rotational position of the drive pulley 80 and the signal from the position detection means 100 A control unit 110 for controlling the driving of the means 50 is provided. The controller 110 controls the operation of the washing machine and may be configured by a microcomputer.

Looking at the first embodiment of the position detecting means 100 with reference to Figure 5, the position detecting means 90 is an arc-shaped cutout 92 formed on the inner surface of the through hole 38 of the housing 30, It consists of a locking portion 94 protruding on one side of the drive pulley 80 to be caught on both sides of the inner surface of the cutout (92). When the engaging portion 94 of the driving pulley 80 is caught by the cutout portion 92 of the housing 30, rotation of the driving pulley 80 and the gear train 60 is constrained. Therefore, a load is applied to the drive shaft 52 of the drive means 50. When a load is applied to the drive shaft 52 of the drive means 50 by the position detecting means 90, the voltage applied to the drive means 50 is varied. The controller 110 detects a voltage change of the driving means 50 and stops driving the driving means 50 to control the winding or unwinding operation of the wire 24.

6 shows a second embodiment of the position detection means 90. Referring to FIG. 6, the position detecting means 90 is a cam curve portion 96 formed on an outer surface of the driving pulley 80 and a switch 98 which outputs a switching signal in cooperation with the cam curve portion 96. Consists of. The cam curve portion 96 is formed such that the first switching signal section 96a, the second switching signal section 96b and the third switching signal section 96c are continuous. The switch 98 includes a first contact 98a in operative direct contact with the cam curve 96 and a second contact 98b in operative contact with the first contact 98a and outputting an on / off signal. ) And a third contact 98c which is in operative contact with the second contact 98b and outputs an on / off signal. The first to third contacts 98a, 98b and 98c of the switch 98 are attached to the cover 36 of the housing 30.

When the first contact 98a of the switch 98 contacts the first switching signal section 96a of the cam curve 96 and all of the first to third contacts 98a, 98b, and 98c are turned on, the controller ( The driving of the driving means 50 is stopped by the control signal of 110, and the loosening operation of the wire 24 is stopped. The first contact 98a of the switch 98 contacts the second switching signal section 96b of the cam curve 96 so that the first contact 98a and the second contact 98b are turned on, and the second contact is turned on. When the 98b and the third contact 98c are turned off, the driving means 50 is driven by the control signal of the controller 110 to perform the unwinding or winding of the wire 24. When the first to third contacts 98a, 98b, and 98c of the switch 98 contact the third switching signal section 96c of the cam curve portion 96 and all of the first contact 98a is turned off, the controller ( The driving of the driving means 50 is stopped by the control signal of 110, and the winding operation of the wire 24 is stopped.

7 shows a third embodiment of the position detection means 90. Referring to FIG. 7, the position detecting unit 90 contacts the operating unit 100 protruding from the outer surface of the driving pulley 80 and the operating unit 100 of the driving pulley 80 to provide an on / off signal. It is composed of a first micro switch 102 and a second micro switch 104 mounted on the cover 36 of the housing 30 to output. When the operating unit 100 operates the first micro switch 102 or the second micro switch 104 by the rotation of the driving pulley 80, the first and second micro switches 102 and 104 are turned on / off. Output the signal. The controller 110 controls the winding or unwinding operation of the wire 24 by stopping driving of the driving means 50 according to the on / off signals of the first and second micro switches 102 and 104.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and may be appropriately changed within the scope of the claims. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

According to the clutch operating device of the washing machine according to the present invention as described above, by operating the wire connected to the clutch lever of the clutch by the cooperation of the gear train and the driving pulley for transmitting the driving force of the driving means to rotate in both directions, The structure can be simplified, the cost is low, and the assembly can be improved. In addition, there is an effect that the driving force of the driving means is accurately transmitted to the clutch to prevent a malfunction and to improve the reliability.

Claims (5)

In the clutch operating device of the washing machine for operating the wire connected to the clutch lever of the clutch for regulating the first drive shaft and the second drive shaft of the gear device, A housing 30; A driving means (50) fixedly installed in the housing (30), for driving the drive shaft in both directions; A gear train 60 installed to transmit the driving force of the driving means 50 to the housing 30; A drive pulley 80 provided to operate the wire 24 in cooperation with the gear train 60; Position detecting means (90) for detecting a rotational position of the drive pulley (80); Clutch operating device of the washing machine, characterized in that consisting of a control unit (110) for controlling the driving of the drive means (50) in accordance with the signal of the position detecting means (90). The method of claim 1, wherein the gear train 60, A worm gear 62 mounted to the drive shaft 52 of the drive means 50; First, second, and third two-stage intermediate gears 64, 66, and 68 that are mounted to rotate with each other about the first, second, and third fixed shafts 40, 42, 44 of the housing 30, respectively. )Wow; Main gear 70 is mounted so as to rotate in engagement with the third two-stage intermediate gear 68 around the fourth fixed shaft 46 of the housing 40, the shaft portion (80a) to which the drive pulley is mounted. Clutch operating device of the washing machine, characterized in that consisting of. The method of claim 1, wherein the position detecting means 90, An arc-shaped cutout portion 92 formed on an inner surface of the through hole 38 of the housing 30; Washing machine, characterized in that consisting of the engaging portion 94 protruding on one side of the drive pulley 80 so that the voltage applied to the drive means 50 is caught on both inner surfaces of the cutout 92 Clutch actuator. The method of claim 1, wherein the position detecting means 90, The cam curve portion 96 is formed on the outer surface of the driving pulley 80 and is formed such that the first switching signal section 96a, the second switching signal section 96b and the third switching signal section 96c are continuous. Wow; A first contact 98a operatively contacting the cam curve 96, a second contact 98b operatively contacting the first contact 98a to output an on / off signal, and The clutch operating device of the washing machine, characterized in that it comprises a switch (98) having a third contact (98c) for operatively contacting the second contact (98b) and outputting an on / off signal. The method of claim 1, wherein the position detecting means 90, An operation part 100 protruding from an outer surface of the driving pulley 80; Clutch operating device of the washing machine, characterized in that it is composed of a first micro switch (102) and a second micro switch 104 in contact with the operating unit (100) to output an on / off signal.