KR950004274B1 - Driving device for washer - Google Patents

Abstract

The driving unit includes a washing shaft geared with a driving motor. A driven gear which is formed with cam slots in its upper sides, and a ratchet gear whose lower hub engaged with an inner circumference of the driven gear, are fitted on the washing shaft integrally. The driving unit further includes a drying shaft rotatably fitted on the outer circumference of the upper washing shaft, a drying shaft adapter from whose lower sides hinge pins are projected. The driving shaft adapter is fitted on the outer circumference of the lower drying shaft. The driving unit also has a pair of brake pads whose upper part is coupled with the hinge pins of the drying shaft adapter. The projections of the brake pads are projected toward the ratchet gear. The cam of the lower part of the brake pads is projected downward and inserted to the cam slots of the driven gear. The brake pads are connected to each other by springs.

Description

Driving device of automatic washing machine

1 is a partial cutaway cross-sectional view of a conventional fully automatic washing machine.

2 is a cross-sectional view showing a clutch of a conventional fully automatic washing machine.

3 is a cross-sectional view showing a clutch of the present invention.

4 is a cross-sectional view showing a cross-sectional view taken along the line A-A of FIG. 3 and the driving motor.

* Explanation of symbols for the main parts of the drawings

100: drive motor 110: drive gear

120: rotating shaft 200: washing shaft

210: driven gear 220: ratchet gear

300: dewatering 310: dehydration adapter

320: brake pad 330: coil spring

340: Stator

The present invention relates to a drive system for a fully automatic washing machine that simplifies the structure of the clutch, reduces installation space and reduces manufacturing costs.

As shown in FIG. 1, a driving apparatus of a conventional washing machine includes a washing tank 10 having a washing shaft 11 integrally fixed to a lower end thereof, a dehydrating tank 20 having a dehydrating shaft 21 fixed thereto, and a washing shaft ( 11) and the clutch 30 is connected to the dehydration shaft 21 to connect or block the rotational force, and the motor to the rotating shaft to be installed in the lower portion of the washing tank 10 and to transmit the rotational force to the clutch 30 by the belt 41 It consists of a drive motor 40 into which the pulley 42 is inserted.

In the conventional washing machine, the driving force due to the rotation of the driving motor 40 is transmitted to the clutch 30 through the motor pulley 42 and the belt 41, and the washing shaft 11 is rotated according to the operation of the clutch 30. Washing is performed by rotating the dehydration shaft 21.

Here, the clutch 30 has a clutch pulley 31 connected to a belt 41 that transmits the rotational force of the drive motor 40, as shown in FIGS. 1 and 2, and the center of the clutch pulley 31. The gear shaft 32 is inserted into and fixed to the washing shaft, and the washing shaft 11 is rotatably mounted inside the dewatering shaft 21 on the top of the gear shaft 32, and the gear housing 33 is disposed at the outer circumference of the lower end of the dewatering shaft 21. The upper inner circumferential surface of the) and the roller support 35 is connected to the lower end of the washing shaft (11). In addition, the planetary gears 34 are supported on the bottom surface of the gear housing 33, and the roller support 35 is connected to the shaft of the planetary gears 34. In addition, the gear housing 33 is connected to the gear shaft 32 through planetary gears inside, the lower end is connected to the gear housing shaft 36, the brake bend 50 is provided on the outer peripheral surface. In addition, the clutch spring (37) is mounted on the outer circumference of the gear housing shaft (36), and the clutch boss (38) is installed on the outer circumference of the clutch spring (37). The cam 39 is provided outside the clutch boss 38. Meanwhile, the brake spring 51 is mounted on one side of the brake bend 50, and the cam 39 is connected to the end of the brake lever 52 connected to the brake spring 51.

The clutch of the conventional washing machine configured as described above rotates the washing tank and the dehydrating tank by performing power transmission differently during washing and dehydration. First, during washing, the brake bend 50 is wound around the outer circumferential surface of the gear housing 33 by the brake spring 51 to hold the dehydration shaft 21 and the gear housing 33 directly connected to the dehydration tank 20. Then, the rotational force of the clutch pulley 31 is decelerated by the planetary gear and then transmitted to the washing shaft 11 through the roller shaft 35. On the other hand, during dehydration, the brake bend 50 is released to change the outer circumferential surface of the gear housing 33 to a rotatable state, and the gear housing 33 is gear housing shaft 36 by the winding friction force of the clutch spring 37. The dehydration shaft 21 is rotated at the same rotational speed as the constant rotation of the clutch pulley 31 without being decelerated and integrally connected to the.

The clutch of the conventional washing machine has a complicated structure, which causes the overall manufacturing cost to rise, and is separated from the driving motor 40, which requires a lot of installation space under the washing tank.

It is an object of the present invention to simplify the structure of the clutch by transmitting the rotational force of the driving motor directly to the washing shaft and dewatering shaft by the driven gear and the ratchet gear, reducing the installation space and reducing the cost of washing To provide a drive.

Hereinafter, the technical configuration of the present invention according to the accompanying drawings in detail as follows.

As shown in FIG. 3 and FIG. 4, the driving gear 110 is engaged with the driving gear 100 in which the driving gear 110 is inserted into the rotating shaft 120 and the driving gear 110 of the driving motor 100. The driven gear 210 having the cam slot 211 formed to be symmetrical on both sides is inserted into the lower end of the hub of the ratchet gear 220 and inserted into the washing shaft 200 and rotatably inserted into the washing shaft 200. And it is characterized in that the basic technology consists of a dehydration shaft 300 is to receive a rotational force by the ratchet gear 220.

Here, the dehydration side 300 is installed at the lower end to maintain a predetermined gap with the upper end of the ratchet gear 220, the dehydration shaft adapter 310 is inserted and fixed to the outer periphery of the lower end of the dehydration shaft 300, the dehydration shaft The gig hinge hinge pins 311 protrude downward from the lower centers of both sides of the dipter 310. In addition, a pair of brake pads 320 are mounted on both outer edges of the latch gear 220 at the lower portion of the dehydration adapter 310, and the brake pads 320 each have a bent surface and the outer shaft surface is curved to form a multistage portion. One end of the opposite brake pad 320 extends to each other, the protrusion 321 protrudes toward the ratchet gear 220 at each inner center, the cam 322 protrudes to the bottom at the bottom, the hinge hole is formed at one side The hinge pin 311 of the dehydration adapter 310 is rotatably fitted in the hinge hole, and the cam 332 of the brake pad 320 slides on the cam slot 211 of the driven gear 210. It is possible to fit, the coil spring 330 is connected to the hinge pin 311 and the other end of one end. On the other hand, the outer peripheral surface of the brake pad 320 is installed with a predetermined gap between the inner peripheral surface of the stator 340 is expanded and bent from the top.

In the operation of the present invention configured as described above, the outer surface of the brake pad 320 installed in the stator 340 at the time of washing is compressed to the inner wall surface of the stator 340 by the elastic force of the coil spring 330, and the brake pad 320 Protrusions 321 are separated from the ratchet gear 220 of the washing shaft 200. Therefore, the forward and reverse rotational force of the driving motor 100 is transmitted to the washing shaft 200 through the driven gear 210, thereby rotating the washing tank forward and reverse. In addition, since the driving motor 100 rotates in one direction when dewatering, and the driven gear 210 engaged with the driving gear 110 is rotated, the driving motor 100 operates in the cam slot 211 formed on the driven gear 2101. Cam 322 is moved to the brake pad 320 in the center direction, the brake pad 320 is a projection 321 of the inner center is sandwiched between the ratchet gear 220 of the washing shaft 200 is connected. Therefore, the dehydration shaft 300, which is hinged to the braze pad 320 by the hinge pin 311 of the dehydration shaft adapter 310, is rotated in one direction with the washing shaft 200. On the other hand, when the dehydration is terminated, the driving load is not applied to the washing shaft 200, the brake pad 320 engaged by the projection 321 to the ratchet gear 220, the ratchet gear (330) by the elastic force of the coil spring (330) Detached from 220, the outer peripheral surface of the brake pad 320 is in close contact with the inner wall surface of the stator 340 by the centrifugal force due to the dehydration rotation to increase the friction pressure to stop.

In this field name, the drive motor 100 drives the washing shaft 200 and the dewatering shaft 300 directly by driving the driven gear 210 and the ratchet gear 220, and the structure is simple because the number of parts is reduced. . Therefore, since the installation space occupies the lower part of the washing tank, the outer shape of the washing machine can be made compact, and the manufacturing cost can be reduced because the parts are simple.

As described above, the present invention is to directly transfer the rotational force of the drive motor to the washing shaft and dewatering shaft by the driven gear and the ratchet gear to simplify the structure of the clutch, reducing the installation space and reduce the manufacturing cost The week is very useful.

Claims (1)

A washing shaft geared to the drive motor, a driven gear having cam slots formed on both sides of the upper part, and a ratchet gear into which the hub lower end is fitted to the inner circumference of the driven gear; A dehydration shaft inserted into the dehydration shaft, a dehydration adapter fitted to the outer periphery of the lower end of the dehydration shaft, and hinge pins protruding from the lower end of both shafts; The cam is projected to the lower end is inserted into the cam slots of the driven gear and is connected to each other by a spring brake pads, characterized in that it consists of a stator fixed with a certain gap on the outer surface of the brake pads Driving device for automatic washing machine.