KR0125498Y1 - Driving apparatus of a washing machine - Google Patents

Abstract

The present invention relates to a driving device of a washing machine, the outer tank 61, the washing and dehydration tank 63 disposed in the outer tank 61, and the power of the power transmission means 67 by the drive shaft member 69. In the washing machine provided with a pulsator (65) disposed in the washing and dewatering tank (63) to agitate the laundry cloth and the washing water, the washing and dewatering tank (63) and drive shaft by buoyancy of the washing water. Engaging means 75 disposed on the bottom of the outer tub 61 to connect / disconnect the members 69 to each other, and the washing and dehydrating tank 63 so that the washing and dewatering tank 63 does not rotate during washing. Rotational restraint means 77 disposed on the upper side of) and buoyancy increasing means 82 disposed on the bottom of the washing and dewatering tank 63 to increase the buoyancy of the washing water that floats the washing and dewatering tank 63. It is characterized by consisting of), so that not only lowers the manufacturing cost, but also the structure And the operation can be simplified to increase the reliability of power transmission.

Description

Drive of washing machine

1 is a longitudinal sectional view showing a washing machine to which a conventional driving device is applied.

FIG. 2 is a longitudinal sectional view showing a driving device of the washing machine of FIG.

3 is a longitudinal sectional view showing a washing machine to which a driving device according to an embodiment of the present invention is applied.

4a and 4b are perspective views showing the engagement means of FIG.

5 is a plan view showing the concave member of the rotational restricting means of FIG.

6a and 6b is a state diagram of the operating device of the washing machine according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: body 61: outer shell

63: washing and dehydrating tank 65: pulsator

67: power generating means 69: drive shaft member

75: engagement means 77: rotational restriction means

82: buoyancy increasing means 89: inner clutch member

91: outer clutch member 93: insertion member

95: concave member 95a: groove

The present invention relates to a driving device of a washing machine, and more particularly, to a driving device of a washing machine to change the power transmission path by using the buoyancy of the wash water.

As shown in FIG. 1, the outer tub 3 is installed in the washing machine body 1, and the bottom surface of the outer tub 3 receives the rotational force of the motor 5 through the belt 7. A drive device 13 for driving the dewatering tank 9 or the pulsator 11 is fixedly installed.

In other words, a washing and dehydration tank 9 for dewatering the laundry cloth by the centrifugal force generated by the driving of the motor 5 is installed in the dehydration shaft of the driving device 13 in the outer tank 3. The pulsator which washes by forming a water flow in the wash water stored in the washing-and-dewatering tank 9 while repeating forward or reverse rotation in accordance with the driving of the motor 5 in the washing-and-dehydrating tank 9. (11) is provided on the washing shaft of the drive device (13).

The outer tub 3 is suspended on the tension bar 17 via a damper 15 to support the outer tub 3 and to sense vibrations of the outer tub 3.

And, the upper side of the washing machine main body 1 is connected to the water tap 21 through the hose 19 is provided with water supply means 23 for supplying the washing water into the washing and dehydration tank (9) The lower surface of the outer tub 3 is provided with drainage means 25 for discharging the wash water.

In the conventional washing machine configured as described above, when washing cloth is put into the washing and dehydrating tank 9 disposed in the outer tank 3 and washing conditions are selected on a control panel not shown, hot or cold water is supplied through the water supply means 23. It is supplied to the washing and dewatering tank (9), and then the rotational force according to the operation of the motor (5) is transmitted to the driving device (13) via the belt (7), and this rotational force is decelerated in the driving device (13). It is transmitted to the pulsator 11 to rotate the pulsator 11.

At this time, the pulsator 11 performs washing by forming water flow in the washing and dehydrating tank 9 while repeating the forward and reverse rotation. After washing, after washing water is discharged according to the operation of the draining means 25 and water is supplied through the water supply means 23, rinsing is performed several times, and then the washing and dewatering tank 9 is rotated at high speed. Washing is completed by dewatering from the laundry cloth by centrifugal force.

As shown in FIG. 2, in the conventional washing machine driving device configured as described above, the driving washing machine having the pulley 27 fixedly installed at the lower end of the pulley 27 receiving the rotational force through the belt 7 according to the driving of the motor 5 is provided. The shaft 29 is free to rotate, and the driving coupling 31 is inserted into the outer circumferential surface of the driving laundry shaft 29, and the first dehydration shaft 33 is shown above the driving coupling 31. Is installed rotatably via a non-bushing member, the upper portion of the first dehydration shaft 33 is coupled to the connector 35, which also serves as a brake drum to rotate freely integrally with the first dehydration shaft 33 Connected.

In addition, a second dehydration shaft 37 is inserted and coupled to the upper side of the connector 35 so as to be freely rotated integrally with the connector 35, and an upper portion of the second dehydration shaft 37 has the washing and dehydration tank ( 9) is coupled to be freely rotated integrally with the second dehydration shaft 37, the driven of the pulsator 11 coupled to the upper end via a bushing member (not shown) inside the second dehydration shaft 37 The washing shaft 39 is inserted into the rotor freely.

On the other hand, inside the connector 35, the rotation of the drive washing shaft 29 is decelerated by a planetary gear (not shown) to be transmitted to the driven washing shaft 39.

In addition, the first dehydration shaft 33 is supported by a lower bearing 43 press-fitted into the lower case 41 so that the first dewatering shaft 33 is easily rotated in accordance with the rotation of the driving laundry shaft 29. 37 is supported by an upper bearing 47 press-fitted into the upper case 45 so as to easily rotate in accordance with the rotation of the first dehydration shaft 33.

In addition, a brake lever may be provided on a middle outer circumferential surface of the connector 35 to prevent the washing and dewatering tank 9 from idling during washing and to brake the washing and dewatering tank 9 when the dehydration stops. A brake band 49, which is connected to the support 51, is disposed. In addition, it is supported by the clutch boss 53 over the outer circumferential surface between the first dehydration shaft 33 and the drive coupling 31 to transmit the rotation of the drive laundry shaft 29 to the first dehydration shaft 33. The clutch spring 55 is disposed, and the clutch lever 53 is connected to the clutch boss 53 via the connecting member 57.

In the conventional washing machine driving device configured as described above, the brake lever 51 is operated at the time of washing so that the brake band 49 is wound around the connector 35 and the clutch lever 59 is operated to operate the clutch spring 55. ) Is released to the drive coupling 31 and the first dehydration shaft 33, so that the drive laundry shaft 29 and the first dehydration shaft 33 are separated.

Therefore, the rotational force by the motor 5 is decelerated in the planetary gear disposed in the connector 35 from the drive washing shaft 29 and transmitted to the driven washing shaft 39, and coupled to the upper end of the driven washing shaft 39. The washed pulsator 11 performs washing while being rotated forward or reverse. At this time, the washing and dewatering tank 9 is idling by the washing cloth and water flow, and this idling is prevented by the brake band 49.

However, at the time of dehydration, the brake lever 51 and the clutch lever 59 act in the opposite directions to the washing direction as described above, so that the brake band 49 is released to the connector 35 and the clutch spring is engaged. 55 is wound around the drive coupling 31 and the first dehydration shaft 33 so that the driving laundry shaft 29 and the first dehydration shaft 33 are coupled to each other.

Therefore, the rotational force by the motor 5 is sequentially transmitted from the drive washing shaft 29 to the first dehydration shaft 33, the connector 35, and the second dehydration shaft 37, and the second dehydration shaft 37 is provided. Washing and dehydration tank (9) coupled to the outer peripheral surface of the rotating to perform dehydration. Then, during the dehydration stop or power failure, the brake lever 51 is operated so that the brake band 49 is wound and the rotation of the washing / dehydration tank 9 is stopped.

By the way, in the conventional drive system of the washing machine configured as described above, the number of parts related to clutch spring and gear used for power switching is not only high, but also has a problem of low reliability due to complicated structure and operation.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to drive the pulsator at the time of washing or to drive the pulsator and washing and dehydration tank at the same time by using the buoyancy of the wash water to drive power It is to provide a driving device of the washing machine to simply switch.

The driving device of the washing machine according to the present invention made to achieve the above object is the outer tub, the washing and dehydration tank disposed in the outer tub, and the drive shaft member to receive the power of the power transmission means to agitate the laundry cloth and the wash water; A washing machine having a pulsator disposed in a washing and dewatering tank, comprising: engaging means disposed at a bottom of the outer tub so as to connect / disconnect the washing and dewatering tank and the drive shaft member to each other by buoyancy of the washing water; Rotating restraining means disposed on the upper side of the washing and dehydrating tank so that the washing and dewatering tank does not rotate, and buoyancy increasing means disposed on the bottom of the washing and dehydrating tank to increase the buoyancy of the washing water to open the washing and dehydrating tank. Characterized in that consisting of.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected about the part same as the part shown in FIG. 1, FIG. 2, and the overlapping description is abbreviate | omitted.

As shown in FIG. 3, an outer tub 61 is disposed in the main body 1, and a washing-and-dehydrating tank 63 is disposed so that a laundry cloth is contained in the outer tub 61 for washing and dehydration. In the laundry and dehydration tank (63), a pulsator (65) is disposed to agitate the laundry cloth and washing water contained therein, and the pulsator (65) and / or the bottom surface of the outer tank (61). Alternatively, power generating means 67 for generating power to drive the washing and dewatering tank 63 is disposed.

The power generating means 67 is connected to the pulsator 65 by a drive shaft member 69.

In addition, the suspension means 71 is disposed on the outer side of the outer tub 61 to support the outer tub 61 and to adjust the shanghai movement of the outer tub 61 to suspend the outer tub 61. Engaging means 75 at the lower side of the outer tub 61 to connect / disconnect the washing and dehydrating tub 63 and the drive shaft member 69 with each other according to the shanghai of the outer tub 61 and the washing and dehydrating tub 63. ) Is disposed, and the rotary binding means 77 is disposed above the washing / dehydrating tank 63 so that the washing-and-dehydrating tank 63 does not rotate during washing.

Where the drive shaft member 69 penetrates the outer tub 61, a bearing 79 is disposed to smoothly rotate the drive shaft member 69, and one side of the bearing 79 is provided with washing water. The packing member 81 is arrange | positioned so that leakage may be prevented.

In addition, a buoyancy increasing means 82 is disposed on the bottom of the washing / dehydrating tank 63 to increase the buoyancy of the washing water that floats the washing-and-dewatering tank.

The power generating means 67 is a transmission motor or a motor equipped with a transmission, and is fixed to an outer bottom surface of the outer tub 61 by fixing means (not shown).

The suspension means 71 has a plurality of guide cover 83 is fixed to the outer peripheral surface of the lower portion of the outer tank 61, the inside of the guide cover 83 absorbs the vibration of the outer tank 61 and at the same time An elastic member 85 is disposed to move the outer tub 61 in accordance with the weight of the 61. One end of the support bar 87 is connected to the elastic member 85, and the support bar 87. The other end of the structure is fixed to the upper surface of the washing machine body (1).

As shown in FIGS. 3 to 4b, the engagement means 75 has an inner clutch member 89 having teeth 89a on its outer circumferential surface fixedly disposed on the outer circumferential surface of the drive shaft member 69. The outer clutch member 91 having the teeth 91a on its inner circumferential surface so as to engage the teeth 89a is fixedly disposed on the bottom of the washing / dehydrating tank 63. At this time, the teeth (89a, 91a) are formed along the circumferential direction of the inner and outer clutch members (89,91) over the protruding portion and the indentation portion in the longitudinal direction of the respective inner, outer clutch members (89,91) It is.

As shown in FIG. 3 and FIG. 5, the rotational restraining means 77 has a plurality of insertion members 91 having a fixed height fixedly arranged on the upper surface of the washing and dewatering tank 63 in a circumferential manner. The structure of the recess member 95 having a plurality of recesses 95a formed therein at the height of the insertion member 93 is fixedly disposed on the upper inner surface of the outer tub 61 so that the insertion member 93 is inserted. It is.

The concave member 95 is generally ring-shaped, and has a structure in which the plurality of concave grooves 95a are circumferentially formed in the plane thereof.

The buoyancy increasing means 82 is a lightweight buoyancy sphere whose interior is empty.

The operation and effects of the driving device of the washing machine according to the embodiment of the present invention configured as described above will be described below.

First, at the time of washing, as shown in FIG. 6A, a laundry cloth such as clothing is put into the washing and dewatering tank 63, and the washing and dewatering tank 63 and the outer tank ( When water is supplied into the tank 61, the washing and dewatering tank 63 floats due to the buoyancy of the washing water introduced into the outer tub 61. At this time, since the buoyancy is increased by the buoyancy increasing means 82, the washing and dehydration tank 63 is easily floated.

Therefore, the inner clutch member 89 of the engaging means 75 is separated from the outer clutch member 91, and the insertion member 93 of the rotational restricting means 77 is inserted into the recess 95a of the recessed member 95. do.

Therefore, the power generated in the power generating means 67 is transmitted only to the pulsator 65 and at the same time the washing and dehydrating tank 63 is constrained to the outer tank 61 by the rotary restraining means 77, The washing-and-dehydrating tank 63 does not rotate by the force which the pulsator 65 stirs a wash cloth and wash water.

Next, at the time of dehydration, as shown in FIG. 6B, when the washing water stored in the washing and dehydrating tank 63 and the outer tank 61 is drained by the operation of the drainage means 25, the washing and dehydrating tank 63 ) Sags down due to the weight of the cloth itself and the laundry.

Therefore, the inner clutch member 89 of the engaging means 75 is inserted into the outer clutch member 91, and the insertion member 93 of the rotary restraining means 77 is separated from the concave member 95, The power generated by the generating means 67 is transmitted to the pulsator 65 and the washing and dehydrating tank 63, and at the same time, the washing and dehydrating tank 63 is free to rotate from the outer tank 61. It can be dehydrated.

That is, it is possible to simply change the transmission path of the power by the operation of the engaging means 75 and the rotational restraining means 77 by the buoyancy of the washing water, without using a separate converter for washing and dehydration.

As described above, the driving device of the washing machine according to the present invention disposes the engaging means and the rotational restraining means connected to and separated by the buoyancy of the wash water in the outer tank, thereby lowering the manufacturing cost and simplifying the structure and operation of the power transmission. It is a very practical design that can increase the reliability.

Claims (3)

The outer tank 61, the washing and dehydration tank 63 disposed in the outer tank 61, and the drive shaft member 69 receives the power of the power transmission means 67 to agitate the laundry cloth and the wash water. In a washing machine having a pulsator (65) disposed in the washing and dewatering tank (63), the washing and dewatering tank (63) and the drive shaft member (69) are connected and separated from each other by buoyancy of the washing water. Engagement means (75) disposed at the bottom of the outer tub (61), and rotary restraining means (77) disposed on the upper side of the washing-and-dehydration tank (63) so that the washing-and-dehydration tank (63) does not rotate during washing. ), And a buoyancy increasing means 82 disposed on the bottom of the washing and dewatering tank 63 to increase the buoyancy of the washing water that floats the washing and dewatering tank 63. . According to claim 1, The rotational restriction means 77 is a plurality of insertion members 93 and circumferentially fixedly disposed on the upper surface of the washing and dewatering tank 63, the insertion member 93 so that the insertion A plurality of grooves (95a) is formed inside the driving device of the washing machine, characterized in that consisting of a concave inlet member (95) fixed to the upper inner surface of the outer tank (61). The driving device of claim 2, wherein the concave member (95) has a ring shape in which the plurality of concave grooves (95a) are formed in a circumferential shape on one side thereof.