KR101139249B1 - Washing Machine - Google Patents

Abstract

Disclosed is a washing machine having a power transmission device which can simplify the configuration and more reliably implement braking and dehydration of dehydration. The power transmission device of the washing machine includes a clutch device for regulating power transmission between the washing shaft connected to the pulsator and the dehydrating shaft connected to the dehydration tank, and the clutch device includes a first clutch member coupled to the washing shaft and an outer side of the dehydration shaft. A second clutch member fixed to the frame, and a third clutch member which is installed to be movable in the longitudinal direction on the dehydration shaft so as to be selectively bitten by the first clutch member and the second clutch member, rotates together with the dehydration shaft, and has a conical outer surface. And an actuating lever moving forward and backward in a direction intersecting with a moving direction of the third clutch member so as to move the third clutch member.

Description

Washing Machine

1 is a cross-sectional view showing the internal configuration of a washing machine according to the present invention.

Figure 2 is a cross-sectional view showing a configuration of a washing machine power transmission device according to the present invention, showing a state in which the connection between the de-shrink and the laundry shaft is released.

Figure 3 is a cross-sectional view showing the configuration of a washing machine power transmission device according to the present invention, showing a state in which the dehydration and washing shaft is connected.

Figure 4 is an exploded perspective view showing a configuration of a clutch device of a washing machine power transmission device according to the present invention.

Figure 5 is a bottom view showing the lower tank of the washing machine according to the present invention.

6 is a perspective view showing the configuration of a clutch device of a washing machine power transmission device according to the present invention.

Explanation of symbols on the main parts of the drawings

10: main body case, 11: tank,

12: dehydration tank, 13: pulsator,

17: drive motor, 20: power train,

21: laundry shaft, 22: deshrinkage,

23, 24: frame, 40: clutch device,

41: first clutch member, 42: second clutch member,

43: third clutch member, 50: operating lever,

53: fork portion, 61: first spring,

62: second spring, 63: actuator,

64: connection line.

The present invention relates to a washing machine, and more particularly to a washing machine having a power transmission device for transmitting the rotational force of the drive motor to the pulsator or dehydration tank.

A conventional washing machine includes a dehydration tank for accommodating laundry, a pulsator for stirring the laundry in the dehydration tank, and a power transmission device for selectively transmitting the rotational force of the driving motor to the dehydration tank or the pulsator. Korean Patent Registration No. 10-0352066 discloses an example of a power transmission device of such a washing machine.

The power transmission device disclosed in the above publication is coupled to the washing shaft coupled to the pulsator, the dehydration tank is installed on the outside of the washing shaft, the brake drum provided on the dehydration shaft, the planetary gear reduction device inside the brake drum, braking the brake drum A clutch device includes a band brake, a clutch spring for clamping power transmission between the laundry shaft and the dehydration shaft, and a clutch lever.

However, the power transmission device of the washing machine has a complicated structure because it is equipped with a brake drum and a band brake for braking of the dehydration shaft and a planetary gear reduction device installed in the brake drum.

In addition, the braking band brake of de-shrinkage has a problem of slip or rotational noise when worn for a long period of time, and the clutch device has a limit in implementing a reliable power transmission because the clutch spring method is used.

The present invention is to solve such problems, the object of the present invention is to provide a washing machine having a power transmission device that can simplify the configuration than the prior art.

Another object of the present invention is to provide a washing machine having a power transmission device for more reliably implementing the braking of the deshrinkment and the power transmission to the deshrinkment.

Washing machine according to the present invention for achieving this object is provided with a power transmission device for selectively transmitting the rotational force of the drive motor to the dehydration tank and the pulsator, the power transmission device is connected to the washing shaft and the dehydration tank connected to the pulsator And a clutch device for regulating power transmission between the dewatering shafts, wherein the clutch device includes a first clutch member coupled to the laundry shaft, a second clutch member fixed to a frame outside the dewatering shaft, and the first clutch. A third clutch member installed to be movable in the longitudinal direction on the dewatering shaft to be selectively bitten by the member and the second clutch member, rotating together with the dewatering shaft, and having a conical outer surface and the third clutch member to move; It characterized in that it comprises an operating lever for advancing in the direction crossing the moving direction of the third clutch member.

In addition, the clutch device may be provided at both ends of the third clutch member so as to be engaged with the first tooth portion provided in the first clutch member, the second tooth portion provided in the second clutch member, and the first and second tooth portions. And third and fourth teeth.

In addition, the third clutch member is characterized in that coupled to the deshrinkage in a serration manner.

In addition, the actuating lever is a support portion rotatably coupled to a support shaft fixed to the frame, a first extension portion extending from the support portion toward the third clutch member, and to press the outer surface of the third clutch member And a fork portion provided at an end of the first extension portion, and a second extension portion extending from the support portion to the opposite side of the first extension portion.

The clutch device may further include a first spring configured to press the actuating lever so that the third clutch member may be bitten by the second clutch member by pressing the fork portion of the actuating lever to the third clutch member and the actuating lever. And an actuator for rotating the second extension part of the operating lever so that the pressurization of the third clutch member can be released.

In addition, the clutch device further includes a second spring for pressing the third clutch member so that the third clutch member can be bitten by the first clutch member when the pressure of the third clutch member is released by the operating lever. Characterized in that.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the washing machine according to the present invention includes a water tank 11 installed inside the main body case 10, a dewatering tank 12 rotatably installed inside the water tank 11, and a dewatering tank ( The pulsator 13 is rotatably provided in the lower part of the inside of 12).

The water tank 11 is supported by a plurality of suspension devices 14 hanging on the inner upper portion of the body case 10. A water supply device 15 for supplying the washing water into the inside of the water tank 11 is installed at the upper portion of the water tank 11, and a drain for draining the washing water of the water tank 11 to the outside at the lower portion of the water tank 11. The device 16 is installed. The lower part of the water tank 11, the drive motor 17 for driving the pulsator 13 and the dewatering tank 12, and the rotational force of the drive motor 17 is selectively selected to the pulsator 13 and the dewatering tank 12. Power transmission device 20 to be transmitted to is installed. The drive motor 17 and the power transmission device 20 are connected via the pulleys 18a and 18b and the connecting belt 19.

As shown in FIG. 2, the power transmission device 20 includes a washing shaft 21 penetrating through the water tank 11, a hollow dehydration shaft 22 coupled to the outside of the washing shaft 21, and a dehydration shaft 22. ) And frames (23, 24) rotatably supporting, and a clutch device (40) for intermittent power transmission between the washing shaft 21 and the dehydration shaft (22).

The washing shaft 21 is connected to the pulsator 13 in the upper end of the dehydration tank 12, and the lower end is coupled to the pulley 18b connected to the driving motor 17 through the connecting belt 19. Therefore, the rotational force of the drive motor 17 is transmitted directly to the pulsator 13 through the washing shaft 21.

The dehydration shaft 22 penetrates the water tank 11 and the upper end thereof is connected to the dehydration tank 12, and the lower end thereof extends to the clutch device 40. In addition, the dehydration shaft 22 is rotatably supported on the outer surface of the washing shaft 21 through a plurality of oilless bearings (25a, 25b), the outer surface via a plurality of bearings (26a, 26b) It is rotatably supported on the frames 23, 24. The frames 23 and 24 are fixed to the bottom surface of the water tank 11. In the part through which the dehydration shaft 22 of the water tank 11 penetrates, the packing 27 which prevents the leakage of wash water is interposed.

As shown in FIGS. 2 and 4, the clutch device 40 is fixed to an outer surface of the washing shaft 21 adjacent to the pulley 18b and has a first clutch member 41 having a first tooth portion 41a formed thereon. ), The second clutch member 42, the first clutch member 41 and the second clutch member 42, which are fixed to the lower end of the frame 24 outside the dehydration shaft 22 and have a second tooth portion 42a formed therein. Third teeth 43a and fourth teeth 43b are formed on the upper and lower ends so as to be selectively snapped to each other, and are installed on the outer surface of the dehydration shaft 22 to be movable in the longitudinal direction of the dehydration shaft 22. Clutch member 43 is included.

In addition, the clutch device 40 includes an actuating lever 50 and an actuating lever 50 which retreat in a direction (radial direction) intersecting with the moving direction of the third clutch member 43 so as to move the third clutch member 43. Presses the first spring 61 to press the third clutch member 43, the actuator 63 to operate the operating lever 50, and the third clutch member 43 to the first clutch member 41. And a second spring 62 pressurized toward the side.

As shown in FIG. 4, the third clutch member 43 is coupled to the second serration portion 45 provided on the outer surface of the dehydration shaft 22 by the first serration portion 44 provided on the inner surface thereof. As a result, it is possible to advance and retract in the longitudinal direction of the predetermined section dehydration shaft 22 and rotate together with the dehydration shaft 22. In addition, the third clutch member 43 has a conical outer surface of which the outer diameter is reduced toward the lower side so that the third clutch member 43 can rise toward the second clutch member 42 when the outer surface is pressed by the operation lever 50. In addition, a second spring 62 is installed on the third clutch member 43 to press the third clutch member 43 toward the first clutch member 41.

This configuration is such that the outer surface of the third clutch member 43 is conical so that when the outer surface of the third clutch member 43 is pressed by the actuating lever 50, the third clutch member 43 is connected to the actuating lever 50. As a result of pushing up, the third tooth 43a of the third clutch member 43 is engaged with and restrained by the second tooth 42a of the second clutch member 42. When the pressurization of the operation lever 50 is released, the third clutch member 43 is lowered by the extension force of the second spring 62, and the fourth tooth 43b of the third clutch member 43 is the first. It is to be engaged with the first tooth portion 41a of the clutch member (41).

This causes the third clutch member 43 to be restrained by the second clutch member 42 when the third clutch member 43 is raised so that braking of the dehydration tank 12 connected to the dehydration shaft 22 is performed. will be. This simplifies the construction compared to the conventional power transmission device, while allowing the dehydration tank 12 to be braked more reliably than before. When the third clutch member 43 descends and is connected to the first clutch member 41, the rotation of the first clutch member 41 which rotates together with the washing shaft 21 is removed through the third clutch member 43. The dehydration tank 12 and the pulsator 13 are rotated together by being transmitted to the contraction 22.

As shown in FIGS. 2 and 4, the actuating lever 50 includes a support part 51 rotatably coupled to a support shaft 65 fixed to the frames 23 and 24, and a support part 51. Semi-circular to the end of the first extension portion 52 and the first extension portion 52 extending in the form bent to the side of the three clutch member 43 and the first extension portion 52 to press the outer surface of the third clutch member 43 And a second extension portion 54 extending a predetermined length from the prepared fork portion 53 and the support portion 51 to the opposite side of the first extension portion 52.

The first spring 61 is installed on the support 51 side of the operating lever 50 so that the fork portion 53 of the operating lever 50 can press the outer surface of the third clutch member 43. This is to enable the operating lever 50 to press the third clutch member 43 to raise the third clutch member 43. To this end, the first spring 61 has an elastic force greater than that of the second spring 62.

As shown in FIG. 5, the actuator 63 for operating the operating lever 50 is fixed to the lower surface of the water tank 11, and the second extension part 54 of the operating lever 50 is connected through the connecting line 64. Is connected to. The actuator 63 operates the operating lever 50 by pulling or releasing the connecting string 64 connected to the operating lever 50. Therefore, as shown in FIG. 6, the actuating lever 50 is separated from the third clutch member 43 by the fork part 53 when the second extension part 54 is pulled by the actuator 63. The fork portion 53 is rotated by the elasticity of the first spring 61 when the pressure of the member 43 can be released and the second extension portion 54 is released by the actuator 63. It is possible to press the outer surface of the three-clutch member 43.

The following describes the operation of this power train.

When the washing operation is performed, the pulling of the operation lever 50 by the actuator 63 is released. Therefore, at this time, as shown in FIG. 2, the operating lever 50 presses the third clutch member 43 while rotating by the elasticity of the first spring 61. That is, the fork portion 53 of the operating lever 50 moves in the direction of arrow A to press the outer surface of the third clutch member 43.

Since the third clutch member 43 pressurized by the operating lever 50 is conical in shape, the third clutch member 43 is pushed upward in response to the entry of the fork 53. That is, since the outer surface of the third clutch member 43 having an inclination is pushed against the inner surface of the fork portion 53, the third clutch member 43 is pushed upward. Accordingly, in the third clutch member 43, the fourth tooth 43b at the lower end of the third clutch member 43 is spaced apart from the first tooth 41a of the first clutch member 41, and the third tooth 43a at the upper end thereof is the second clutch member ( The second tooth 42a of 42 is engaged and restrained. In addition, the dehydration shaft 22 coupled to the third clutch member 43 in a serration manner and the dehydration tank 12 coupled to the dehydration shaft 22 are constrained by this operation. When the driving motor 17 operates in this state, since the rotational force of the driving motor 17 is transmitted only to the washing shaft 21, the pulsator 13 is rotated, but the dehydration tank 12 does not rotate.

When performing the dehydration operation, the operation lever 50 is pulled by the operation of the actuator 63. Therefore, at this time, as shown in FIG. 3, the operating lever 50 rotates by pulling the actuator 63 to release the pressurization of the third clutch member 43. That is, the fork portion 53 of the operating lever 50 moves in the direction of arrow B and is spaced apart from the outer surface of the third clutch member 43.

Therefore, since the third clutch member 43 descends due to the elasticity of the second spring 62, the third tooth 43a at the upper end is spaced apart from the second tooth 42a of the second clutch member 42, and The fourth tooth 43b is engaged with the first tooth 41a of the first clutch member 41.

In this state, when the driving motor 17 operates, the rotational force of the driving motor 17 is transmitted not only to the washing shaft 21 but also toward the dehydration shaft 22, so that the pulsator 13 and the dewatering tank 12 are at the same speed. Rotate together. That is, the rotational force of the driving motor 17 transmitted to the washing shaft 21 is transmitted to the dehydration shaft 22 through the first clutch member 41 and the third clutch member 43 engaged with each other.

As described above in detail, the washing machine according to the present invention has a conventional band brake system because the third clutch member may be restrained by the second clutch member when the third clutch member of the power transmission device is lifted to perform the dehydration braking. Compared to a washing machine equipped with a braking device, the configuration can be simplified and the braking of the dehydration tank can be more reliably performed.

In addition, since the fourth tooth of the third clutch member is connected to the first tooth of the first clutch member coupled to the washing shaft, the present invention has an effect of more reliably implementing power transmission to the de-shrinkage.

Claims (6)

In a washing machine having a power transmission device for selectively transmitting the rotational force of the drive motor to the dehydration tank and the pulsator, The power transmission device includes a clutch device for regulating power transmission between the washing shaft connected to the pulsator and the dehydration shaft connected to the dehydration tank, The clutch device includes a first clutch member coupled to the laundry shaft, a second clutch member fixed to a frame outside the dehydration shaft, and the first clutch member and the second clutch member to be selectively snapped to the second clutch member. A third clutch member which is installed to be movable in the longitudinal direction in the contraction and rotates together with the dehydration shaft, and moves forward and backward in a direction intersecting with the moving direction of the third clutch member so as to move the third clutch member. Washing machine comprising an operating lever. The method of claim 1, The clutch device may include a first tooth provided in the first clutch member, a second tooth provided in the second clutch member, and third ends provided at both ends of the third clutch member so as to be engaged with the first and second teeth. And a washing machine comprising a fourth tooth. 3. The method of claim 2, The third clutch member is a washing machine, characterized in that coupled to the desorption in the serration method. The method according to claim 1 or 3, The actuating lever may include a support part rotatably coupled to a support shaft fixed to the frame, a first extension part extending from the support part toward the third clutch member, and the outer surface of the third clutch member to be pressed. And a fork portion provided at an end of the first extension portion, and a second extension portion extending from the support portion to the opposite side of the first extension portion. 5. The method of claim 4, The clutch device may include a first spring configured to press the operating lever so that the third clutch member may be bitten by the second clutch member by forcing the fork portion of the operating lever to press the third clutch member, and by the operating lever. Washing machine further comprises an actuator for rotating the second extension of the operating lever to release the pressure of the third clutch member. The method of claim 5, The clutch device further includes a second spring for pressing the third clutch member so that the third clutch member can be bitten by the first clutch member when the pressure of the third clutch member is released by the operating lever. Washing machine characterized in that.

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