KR200215571Y1 - Clutch device of washing machines - Google Patents

Abstract

The present invention relates to a clutch device of a washing machine. It is a pulley gear 12 is formed in a circular shape on the upper surface of the pulley 10 rotated by the drive of the motor formed on the outer periphery, and the cylindrical upper outer peripheral portion is extended to form the operating ring 24, the lower inner peripheral portion pulley A clutch gear 22 for meshing with the gear 12 is formed, and a spline gear that is engaged with the dehydration spline part 8 formed on the outer periphery of the lower end of the dehydration shaft 7 on the clutch gear 22 so as to be reciprocated vertically. The clutch 20 in which the 26 is formed and the clutch casing 24 formed in the washing machine base 40 are installed to be reciprocated by the solenoid 34 and connected to the operating ring 24 of the clutch 20. Movable opening 30 having cam portion 32 for reciprocating clutch 20 to one side, restoring spring 36 for restoring position of movable opening 30 to the other side, base 40 and clutch ( 20) Movable to hold the upper surface of spline gear 26 inside Including the spring 38 provides a clutch device in the formed washer. As a result, the clutch structure of the washing machine is simplified and the durability is improved, and since the operation of the clutch is accurate, a useful effect of improving the reliability of the washing machine is provided.

Description

Clutch device of washing machine {CLUTCH DEVICE OF WASHING MACHINES}

The present invention relates to a clutch device of a washing machine, and simplifies the configuration of the clutch that regulates the power of the washing machine and relates to a clutch device of the washing machine, which improves durability and reliability since the operation state is correct.

Generally, a washing machine clutch is used to switch between washing and dehydrating action.

Such a clutch of the washing machine is provided with a clutch spring, the interruption of power is achieved by the friction force of the clutch spring. Such a conventional washing machine is shown in FIG.

In the washing machine shown, the pulley 5 fixed integrally with the washing shaft 6 during washing rotates in both directions by the driving force of the driving motor 9, and the rotating force rotates the pulsator 4 through the washing shaft 6. It rotates to generate rotating fish in the washing tank 3.

In addition, during dehydration, the washing shaft 6 connected to the dehydration shaft 7 is connected to the washing shaft 6 and the dehydration shaft 7 by the clutch spring 20 so that the dehydration shaft 7 is rotated in only one direction through friction. The laundry is dewatered by rotating at high speed.

However, the washing machine clutch in which the clutch spring 20 is installed is a simple friction type that transfers power by connecting the washing shaft 6 and the dehydration shaft 7 by the friction force of the clutch spring 20, and when the dehydration amount is exceeded. Due to the weight of the washing tub 3, the washing shaft 6 and the spring clutch 20 are slipped or breakage of parts occurs, thereby causing a defect in the washing machine.

The present invention has been made in view of the above problems, to provide a clutch device of a washing machine that improves durability by increasing the accuracy and durability of the clutch even when an overload occurs, simplifying the structure of the clutch. .

Technical problem of the present invention as described above, the washing shaft is installed in the pulley rotated by the drive of the motor, the washing shaft and the oil-less bearing is mutually supported by a washing machine having a dewatering shaft installed in a tubular shape at the outer periphery of the washing shaft In the clutch device of the present invention, a pulley gear formed in a circular shape on an upper surface of the pulley and a cylindrical upper end portion is extended to form an operating ring, and a lower end portion has a clutch gear that is selectively engaged with the pulley gear. And a clutch having a spline gear engaged with the dehydrating spline formed on the lower periphery of the lower end of the dehydration shaft in an upper portion of the clutch gear so as to be reciprocated vertically, and reciprocally installed by a solenoid in the clutch casing formed at the washing machine base. The clutch is connected to one side of the operating part to one side It provides a clutch device of a washing machine including a movable port formed with a cam portion for copying, a restoring spring for restoring the position of the movable port to the other side, and a movable spring for holding the spline gear upper surface inside the base and the clutch. This can be achieved by.

1 is a cross-sectional view showing a clutch of a conventional washing machine,

2 is a cross-sectional view of the washing machine clutch device according to the present invention,

Figure 3 is a cross-sectional view of the operating state of the washing machine clutch device according to the present invention.

<Description of the symbols for the main parts of the drawings>

2: reduction gear part 4: pulsator

6: washing shaft 7: dewatering

8: dewatering spline 10: pulley

12: pulley gear 20: clutch

22: clutch gear 24: operating part

26: spline gear 30: movable port

32: cam portion 34: solenoid

36: restoring spring 38: movable spring

40: base

Preferred embodiments of the present invention having the features as described above will be described in detail with reference to the accompanying drawings.

The clutch device of the washing machine according to the present invention is configured to interrupt power transmission by selecting a gear of a gear tooth for power transmission in a form of transmitting power by frictional force by a spring.

Such a clutch device is shown in FIG. 2 and the same reference numerals are given to the same components as the conventional components.

This, the washing shaft 6 is installed in the pulley 10 is rotated by receiving the rotational force of the motor (not shown), the pulsator 4 is installed in the washing tank 3 at the upper end of the washing shaft (6).

The outer periphery of the washing shaft 6 is provided with a tubular dewatering shaft (7), the washing shaft (6) and the dewatering shaft (7) is supported by the oilless bearing not shown, so as to rotate mutually, dehydration At the time, the rotational force of the pulley 10 is controlled by the speed ratio from the reduction gear part 2 through the dehydration shaft 7 to transmit power to rotate the washing tank 3 at high speed.

The upper surface of the pulley 10 is placed in a circular shape, the outer peripheral portion is formed with a pulley gear 12. Therefore, the pulley 10 and the pulley gear 12 are linked at the same speed ratio.

In addition, a cylindrical clutch 20 is formed between the upper portion of the pulley 10 and the base 40 formed at the lower end of the reduction gear unit 2. The outer periphery of the upper end of the clutch 20 extends outward to form an operating annulus 24, and the lower inner periphery of the clutch 20 has a clutch gear 22 that is selectively engaged with the pulley gear 12. In addition, a spline gear 26 is formed on the clutch gear 22 to be engaged with the dehydration spline part 8 formed at the outer peripheral portion of the lower end of the dehydration shaft 7 so as to be reciprocated vertically.

In the clutch casing 24 extending from the base 40 to install the clutch 20, a movable port 30 for reciprocating the clutch 20 up and down is installed. The movable port 30 is installed to be horizontally moved in one direction by the solenoid 34 activated by an external power source, the movable port 30 has an inclined surface toward the operating ring 24 side of the clutch. The cam portion 32 is connected to the operating ring 24. Therefore, when the movable port 30 is horizontally moved in one direction, the inclined surface of the cam portion 32 is lowered along the inclined surface of the operating ring 24, the clutch 20 is lowered.

On the other hand, when the power supply of the solenoid 34 in the state in which the movable port 30 is transferred to the one side by the solenoid 34, the restoring spring 36 for restoring the movable port 30 to the original position is Clutch casing 24 is installed on the other side.

In addition, when the movable opening 30 is transferred to one side by activating the solenoid 34, a movable spring 38 for temporarily operating the lowering of the clutch 20 may include a bottom surface of the base 40 and the The upper surface of the spline gear 26 which is a cylindrical interior of the clutch 20 is mutually shot.

The operation of the present invention configured as described above will be described with reference to FIGS. 2 and 3.

First, when the washing machine is set to the washing and rinsing mode, the electric current is set not to supply the solenoid 34 installed in the clutch casing 24. Thus, the solenoid 34 is not activated, and the position of the solenoid 34 is placed in the position shown in FIG. 2, so that the cam portion 32 of the movable opening 30 protruded to the solenoid 34 is the clutch 20. ) Will be in the state of pushing up the operating part 24.

At this time, the movable spring 38 holding the upper surface of the spline gear 26 on the bottom surface of the base 40 and the inner side of the clutch 20 is in a compressed state, and the spline gear 26 of the clutch 20 is compressed. And the dehydration spline part 8 formed at the bottom of the dehydration shaft 7 is in a raised position and the clutch gear 22 formed at the bottom of the clutch 20 is a pulley gear formed at the top of the pulley 10. 12) is out of the state. In addition, the dehydration spline portion 8 formed below the dehydration shaft 6 is stopped while being engaged with the spline gear 26 of the clutch 20.

That is, since the clutch 20 is positioned in a state where the rotational force of the pulley 10 is interrupted, the clutch 20 may be stopped while the dehydration shaft 7 is stopped.

Therefore, the motor rotation in the washing and rinsing mode is repeatedly rotated in both directions and transmitted to the pulley 10, and the lower part of the washing shaft 6 built in the pulley 10 rotates in both directions from the reduction gear 2. The speed ratio is adjusted to be transferred to the upper part of the washing shaft 6, and the dehydration shaft 7 is spaced apart from the oilless bearing so as not to rotate the dewatering shaft 7. Thus, the bidirectional rotational force of the washing shaft 6 repeatedly rotates the pulsator 4 in both directions to wash the laundry while generating rotating water in the washing tank 3.

If the dehydration mode is set in the microcomputer, as shown in FIG. 3, the microcomputer of the washing machine outputs a signal for rotating the motor at high speed in one direction and at the same time, a current is applied to the solenoid 34 installed in the clutch casing 24. Apply. From the applied current, the solenoid 34 is activated to pull the movable opening 30 to one side, and the restoring spring 36 installed on the other side of the clutch casing 24 is extended with a tensile force applied.

When the movable port 30 is in the other position, the cam part 32 of the movable port 30 moves the operating ring 24 of the clutch 20 to the raised position while the restoration spring 36 maintains its original length. In the fixed state, the one-side movement of the movable port 30 and the interlocking operation of the cam part 32 according to the activation of the solenoid 34 causes the operation annular part 24 to cancel the ruled state of the rising position.

That is, according to the movement of one side of the movable port 30, the rising and holding of the operating ring 24 is released, and the clutch 20 of the operating ring 24 is rapidly lowered by the elastic force of the movable spring 38. .

The spline gear 26 formed on the inner side of the clutch 20 according to the instantaneous drop of the clutch 20 slides downward while being engaged with the dewatering spline portion 8 formed under the dehydration shaft 7 and simultaneously clutches. (20) The clutch gear 22 formed on the inner surface of the bottom is engaged with the pulley gear 12. At this time, the gear tooth end of the clutch gear 22 and the end of the pulley gear 12 are each processed into a triangular shape or similar shape, so that the engagement is smoothly made during the instantaneous lowering of the clutch 20.

When the dehydration mode is set, the one-way high-speed rotational power of the motor is transmitted to the pulley 10, and the high-speed rotational power of the pulley 10 interlocks the pulley gear 12 and at the same time, releases the gear from the momentary drop of the clutch 20. The clutch gear 22 engaged with 12 is driven. This rotates the clutch 20 so that the dewatering spline portion 8 engaged with the spline gear 26 starts to rotate.

Therefore, the rotation of the dehydration spline part 8 rotates the lower part of the dehydration shaft 7, and the rotational force is rotated the upper part of the dehydration shaft 7 in a state in which the speed is adjusted through the reduction gear 2. This, the dehydration shaft (7) is rotated at a high speed of the washing tank 3, the washing tank 3 is rotated the laundry to perform the dehydration process by centrifugal force.

When the dehydration process is completed, the driving of the motor is stopped and the high speed rotation of the washing tank 3 is stopped, and the washing machine is stopped and the power is turned off, or the washing and rinsing mode is set for washing and rinsing again. Can be.

When the washing machine is turned off or when the washing and rinsing modes are reset, the microcomputer cuts off the current applied to the solenoid 34.

When the current is blocked in the solenoid 34, the solenoid 34 is restored to an inactive state, so that the movable opening 30 which is tensioned to one side by the solenoid 34 is in a free state. At this time, since the restoring spring 36 installed on the other side of the clutch casing 24 is elongated by the tension force of the movable port 30 when the dehydration mode is set, the movable port 30 is movable when the movable port 30 is free. The restoring spring 36 is elastically compressed while pulling 30 to the other side. This, while moving the movable port 30 to the other side, the cam portion 32 of the movable port 30 will push up the bottom surface of the operation ring 24 of the upper end of the clutch 20. That is, as the other side of the movable port 30 is moved, the clutch 20 is raised again.

When the clutch 20 is raised, the spline gear 26 is slid upward while being engaged with the dehydrating spline portion 8 under the dehydration shaft 7 and simultaneously compresses the movable spring 38 while being pulled up. The clutch gear 22 is separated from the gear 12.

That is, the rotational force of the pulley 10 can be transmitted only to the washing shaft 6, and the rotational force cannot be transmitted to the dehydration shaft 7.

Therefore, when the washing machine is turned off, the operation of the washing machine is terminated while the movable opening 30 raises the clutch 20 as described above, and the washing machine is set as described above even when the washing and rinsing mode is set. In the state where 20 drives the driving force of the pulley 10, the driving force of the motor rotates only the washing shaft 6 to perform washing and rinsing again.

As described above, according to the present invention, when the washing mode is set, the clutch 20 is fixed to an elevated position, and thus the pulley gear 12 and the clutch gear 22 are separated, and thus the dehydration shaft for rotating the washing tank 3 ( 7) and the dehydration spline part 8 is in a stopped state, and when the dehydration mode is set, the clutch 20 is tensioned to the movable spring 38 by one side transfer of the movable port 30 according to the activation of the solenoid 34. The pulley gear 12 and the clutch gear 22 are engaged with each other while being lowered by the elastic force. The dehydration spline part which is driven by the driving force of the motor is transmitted to the clutch gear 22 through the pulley 10 and the pulley gear 12 and is engaged with the spline gear 26 of the clutch 20 as the clutch 20 rotates. (8) is interlocked so that the dehydration shaft (7) rotates at high speed. Therefore, the washing tank 3 is rotated at a high speed to perform dehydration by centrifugal force.

The clutch device of the washing machine according to the present invention can be operated by simplifying the clutch structure of the washing machine from the installation of a movable element capable of a single operation such as a solenoid, thereby simplifying the structure of the clutch device and improving durability, and up and down the clutch. Since the dehydration function is interrupted and connected by the instantaneous matching of the gear teeth by the reciprocating operation, the clutch operation is accurate, thereby providing a useful effect of improving the reliability of the washing machine.

Claims (1)

A washing shaft 6 is installed on the pulley 10 rotated by the driving of the motor, and the washing shaft 6 is mutually supported by the washing shaft 6 and the oil-less bearing and installed in a tubular shape at the outer circumference of the washing shaft 6. In the clutch device of the washing machine provided with the contraction (7), A pulley gear 12 formed in a circular shape on an upper surface of the pulley 10, A cylindrical upper end portion is extended to form an operating annular portion 24, and a lower end portion inner portion is formed with a clutch gear 22 that is selectively engaged with the pulley gear 12. The clutch gear 22 has an upper portion of the dewatering shaft. A clutch 20 having a spline gear 26 engaged with the dewatering spline portion 8 formed on the outer peripheral portion of the lower end so as to be reciprocated vertically; Reciprocally installed by the solenoid 34 in the clutch casing 24 formed in the washing machine base 40, it is connected to the operating ring 24 of the clutch 20 to reciprocate the clutch 20 to one side Movable opening 30 formed with a cam portion 32 for, Restoration spring 36 for restoring the position of the movable port 30 to the other side, Clutch device of the washing machine, characterized in that it comprises a movable spring (38) for mutually holding the upper surface of the spline gear (26) inside the base (40) and the clutch (20).