KR0125497Y1 - Driving gear of a washing machine - Google Patents

Abstract

The present invention relates to a driving device for a washing machine, the outer tank 61, the washing and dewatering tank 63 disposed in the outer tank 61, and the laundry contained in the outer tank 61 and the washing and dewatering tank 63. A washing machine equipped with a pulsator (65) disposed in the washing and dewatering tank (63) to stir cloths and wash water, while supporting the outer tank (61) and adjusting the shanghai copper of the outer tank (61). The first suspension means 67 disposed on the outside of the outer tub 61 to suspend the outer tub 61 and the washing-and-dehydrating tank 63 and at the same time the washing-and-dehydrating tank 63 A second suspension means 69 disposed outside the washing and dewatering tank 63 to suspend the shanghai dong, and suspending the washing and dewatering tank 63; and the outer tank 61 and the washing and dewatering tank. The lower portion of the outer tub 61 to connect / disconnect the washing and dehydrating tank 63 and the drive shaft member 77 with each other according to the shanghai-dong of 63. The engaging means 71 disposed on the side, the rotary restraining means 73 disposed on the upper side of the washing and dewatering tank 63 so that the washing and dewatering tank 63 does not rotate during washing, and the drive shaft member. It is characterized in that it consists of a power generating means 75 for generating power to rotate and at the same time to change the rotational speed of (77), because it is configured in this way, do not use a separate conversion device for washing and dehydration It is possible to change the rotational speed at the same time simply by changing the transmission path of the power by the operation of the engagement means and the rotation restraining means by the weight of the laundry cloth and the wash water.

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.

5a and 5b is a working state diagram of the driving 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: first suspension means 69: second suspension means

71: engaging means 73: rotation restraining means

75: power generating means 77: drive shaft member

77a: gear tooth 109: reduction gear

The present invention relates to a driving apparatus for a washing machine, and more particularly, to a driving apparatus for a washing machine in which a power transmission path is changed by using a weight of a laundry cloth and washing water, and at the same time a reduction gear is disposed in the motor itself.

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 in a tension bar 17 via a damper 15 so as to support the outer tub 3 and reduce vibration 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 forward and reverse rotation. After the washing is finished, the water is discharged through the water supply means 23 after the washing means is discharged according to the drainage means 25, and 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 drive laundry shaft 29. The 37 is supported by the upper bearing 47 press-fitted in the upper case 45 so that it may rotate easily with the rotation of the said 1st dehydration shaft 33. As shown in FIG.

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 driving device for a washing machine configured as described above, the brake lever 51 is operated to wash the brake band 49 in a closed state, and the clutch lever 59 is operated so that the clutch spring 55 is released in the washing state. Thus, the driving washing shaft 29 and the first dehydration shaft 33 are in a separated state.

Accordingly, 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 portion 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 and the clutch spring 55 is locked. The driving washing shaft 29 and the first dehydration shaft 33 is in a coupled state.

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.

In addition, there is a problem in that the driving device of the washing machine is enlarged because a separate reduction device must be disposed adjacent to the motor.

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

Another object of the present invention is to provide a driving device of a washing machine that simply changes the rotational speed of the drive shaft member by using a weight of the washing cloth and the washing water, such as clothing, by disposing the reduction gear in the power generating means.

Driving device for a washing machine according to the present invention made to achieve the above object is the washing and dehydration to agitate the outer tub, the washing and dehydration tank disposed in the outer tank, and the laundry cloth and washing water contained in the outer tank and the washing and dehydration tank. A washing machine having a pulsator disposed in a tank, the washing machine comprising: a first suspension means disposed on an outer side of the outer tank to suspend the outer tank to support the outer tank and to adjust the shanghai copper of the outer tank; A second suspension means disposed outside the washing and dehydrating tank to suspend the washing and dehydrating tank to support the dehydrating tank and to adjust the shanghai and the dehydrating tank of the washing and dehydrating tank; Engaging means disposed on the lower side of the outer tub so as to connect / disconnect the washing / dehydrating tank and the drive shaft member to each other according to the present invention. Rotational restraining means disposed on the upper side of the washing and dewatering tank so that the washing and dewatering tank does not rotate, and a power generating means for generating power to rotate the drive shaft member and to change the rotational speed thereof. .

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 washing and dehydrating tank 63, a pulsator 65 is disposed to agitate the washing cloth and the washing water contained therein.

In addition, a first suspension means 67 is disposed outside 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. A second suspension means 69 is disposed on the outside of the washing and dehydrating tank 63 to support the washing and dehydrating tank 63 and to adjust the shanghai movement of the washing and dehydrating tank 63. The washing and dewatering tank 63 is suspended, and the outer tub 61 is connected to and separated from the washing and dehydrating tank 63 and the drive shaft member according to the shanghai east of the outer tank 61 and the washing and dehydrating tank 63. Engaging means 71 is disposed below the 61. Rotating binding means 73 is disposed above the washing / dehydrating tank 63 so that the washing-and-dehydrating tank 63 does not rotate during washing. The lower surface of the outer tank 61 to drive the pulsator 65 and / or washing and dehydration tank 63 It is power generating means for generating a force (75) is arranged.

At this time, the power generating means 75 is connected to the pulsator 65 by a drive shaft member 77.

Where the drive shaft member 77 penetrates the outer tub 61, a bearing 78 is disposed to smoothly rotate the drive shaft member 77, and one side of the bearing 78 is provided with a wash water. A packing member 79 is disposed to prevent leakage, and a corrugated pipe 81 is disposed on the upper side of the outer tub 61 to support the upper side of the outer tub 61.

The first suspension means 67 has a plurality of guide covers 83 are fixed to the outer circumferential 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 The elastic member 85 is disposed to move the outer tank 61 in accordance with the weight of the outer tank 61, one end of the support bar 87 is connected to the elastic member 85, and the support bar ( The other end of 87 is fixed to the upper surface of the washing machine body 1.

The second suspension means 69 has a plurality of support members 89 fixedly disposed on an upper surface of the washing machine body 1, and one end of the support member 89 is disposed on the washing and dehydrating tank 63. It has a structure in which the locking step 91 is formed so that it may be caught. At this time, a portion of the support member 89 is formed with an elastic portion 89a to move the washing and dewatering tank 63 according to the weight of the washing and dewatering tank 63, and the supporting member ( The free end of the 89 is bent to catch the engaging jaw 91.

On the other hand, the total elastic modulus k1 of the first suspension means 67 is the second suspension means 69 so that the deflection of the outer tub 61 with respect to the load is greater than the deflection amount of the washing and dewatering tank 63. It is smaller than the total modulus of elasticity (k2).

As shown in Figs. 3 to 4b, the engagement means 71 has an inner clutch member 93 having teeth 93a on its outer circumferential surface fixedly disposed on the outer circumferential surface of the drive shaft member 77, The outer clutch member 95 having the teeth 95a on its inner circumferential surface to be engaged with the teeth 93a is fixedly disposed on the bottom of the washing / dehydrating tank 63. In this case, the teeth 93a and 95a are formed along the circumferential direction of the inner and outer clutch members 93 and 95 over the longitudinal direction of the inner and outer clutch members 93 and 95. .

The rotational restraining means 73 is fixedly disposed at a predetermined height on the upper surface of the washing and dehydrating tank 63, and the height of the insertion member 97 is generally inserted so that the insertion member 97 is inserted. The receiving member 99 having the receiving space 99a in the log is fixedly disposed on the upper inner surface of the outer tub 61.

The power generating means 75 is the main body 101 is fastened to the bottom surface of the outer tub 61 by a plurality of fastening members 103, the stator 105 is disposed inside the main body 101, Inside the stator 105, a rotor 107 which rotates by acting with the stator 105 by the power supplied from the outside is disposed, and inside the rotor 107 of the rotor 107 The reduction gear 109 is disposed so as to reduce the rotational speed and transmit it to the drive shaft member 77.

A plurality of heat dissipation holes 101a are formed in the lower side of the main body 101 so that heat generated inside the power generating means 75 is discharged to the outside. A flange portion 101b is formed at an upper portion of the main body 101 so as to be easily coupled to the bottom surface.

The stator 105 has a cup shape in which a through hole is formed in the center of the bottom of the stator to facilitate heat dissipation.

The rotor 107 has inner gear teeth 107a and 107b formed on the inner upper side and the inner lower side thereof so that the reduction gear 109 is geared and the end of the drive shaft member 77 is engaged. It is. At this time, the inner circle diameter of the inner gear teeth 107a is formed larger than the diameter of the base circle of the inner gear teeth 107b.

Gear teeth 109a are formed on the outer circumferential surface of the reduction gear 109 so as to be caught by the stator 105 and the drive shaft member 77. At this time, one side of the reduction gear 109 is geared to the inner gear teeth 107a of the rotor 107 and the other side is geared to the end of the drive shaft member 77.

Gear teeth 77a are formed on the outer circumferential surface of the lower portion of the drive shaft member 77 so as to be caught by the gear teeth 109a of the reduction gear 109 and the inner gear teeth 107b of the rotor 107.

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. 5A, 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 are operated by the operation of the water supply means 23. When water is supplied into the tank 61, the outer tank 61 suspended by the first suspension means 67 and the washing and dewatering tank 63 suspended by the second suspension means 69 are washed with cloth and washed water. Due to its weight sag down.

At this time, since the total elastic modulus k1 of the first suspending means 67 is smaller than the total elastic modulus k2 of the second suspending means 69, the deflection amount of the outer tank 61 is the washing and dewatering tank ( Greater than the deflection of 63). Therefore, the insertion member 97 of the rotational restricting means 73 is inserted into the receiving member 99, the inner clutch member 93 of the engaging means 71 is separated from the outer clutch member 95, and the drive shaft member ( The lower portion of 77 is bitten by the reduction gear 109.

Therefore, the power generated in the power generating means 75 is transmitted only to the pulsator 65 and at the same time the washing and dewatering tank 63 is constrained to the outer tank 61 by the rotary restraining means 73, The washing-and-dehydrating tank 63 does not rotate by the force which the pulsator 65 stirs a wash cloth and wash water.

At this time, since the rotational force of the rotor 107 of the power generating means 75 is decelerated through the reduction gear 109 and transmitted to the drive shaft member 77, the pulsator 65 may have no separate reduction device. Rotation at low speed increases the rotational force on the laundry cloth and the wash water.

Next, at the time of dehydration, as shown in FIG. 5B, 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, only the washing cloth is washed and dewatering. Since it remains in the tank 63, the washing and dewatering tank 63 suspended by the second suspension means 69 sags downward due to the weight of the object to be cleaned. At this time, the washing and dehydration tank 63 is lowered because the support member 89 of the second suspension means 69 is caught on the locking jaw (91).

Therefore, the insertion member 97 of the rotational restriction means 73 is separated from the receiving member 99, the inner clutch member 93 of the engaging means 71 is inserted into the outer clutch member 95, the drive shaft The lower portion of the member 77 is bitten by the inner gear teeth 107b of the rotor 107.

As a result, the power generated by the power generating means 67 is transmitted to the pulsator 65 and the washing and dewatering tank 63, and at the same time, the washing and dewatering tank 63 becomes free to rotate from the outer tank 61. This can be dehydrated without twisting. At this time, since the rotational force of the rotor 107 of the power generating means 75 is transmitted directly to the drive shaft member 77, the pulsator 65 and the washing and dewatering tank 63 is rotated at a high speed.

As described above, the driving device of the washing machine according to the present invention disposes the engaging means and the rotational restraining means in the space between the outer tub suspended in the first suspension means and the washing and dehydrating tank suspended in the second suspension means, and simultaneously generates power. By arranging the reduction gear in the means, it is possible to simply change the power transmission path and operate the rotational speed at the same time by operating the engagement means and the rotation restraining means by the weight of the laundry cloth and the washing water without using a separate converting device for washing and dehydration. It is a very practical design that can change.

Claims (4)

The washing and dehydration to stir the outer tank 61, the washing and dewatering tank 63 disposed in the outer tank 61, and the laundry cloth and washing water contained in the outer tank 61 and the washing and dehydrating tank 63. A washing machine provided with a pulsator (65) disposed in a tank (63), which is disposed outside the tank (61) to support the tank (61) and to adjust the shanghai movement of the tank (61). The washing and dewatering tank to support the first suspension means 67 suspended in the outer tank 61 and the washing and dewatering tank 63 and to adjust the shanghai movement of the washing and dewatering tank 63. The second suspension means (69) disposed outside the (63) and suspending the washing and dewatering tank (63), and the washing and drying according to the shanghai east of the outer tank (61) and the washing and dewatering tank (63). Engaging means 71 disposed below the outer tub 61 to connect / disconnect the dehydration tank 63 and the drive shaft member 77 with each other; Rotational restraining means 73 disposed above the washing-and-dehydration tank 63 and the drive shaft member 77 are rotated so as not to rotate the tack-cum-dehydration tank 63 and the rotation speed thereof is changed. Driving device for a washing machine, characterized in that consisting of power generating means (75) for generating a. According to claim 1, wherein the power generating means 75 is the main body 101 fastened to the bottom surface of the outer tub 61, the stator 105 disposed inside the main body 101, and the stator 105 Rotor 107 disposed inside the stator 105 to rotate in response to the rotor and the rotor 107 to reduce the rotational speed of the rotor 107 to be transmitted to the drive shaft member 77 The driving device of the washing machine, characterized in that consisting of the reduction gear 109 disposed inside. The inner gear teeth 107a of claim 2, wherein the rotor 107 is gear-coupled with the reduction gear 109 and at the same time the end of the drive shaft member 77 is engaged with the gear. , 107b are formed, respectively, and the base circle diameter of the inner gear teeth (107a) is larger than the base circle diameter of the inner gear teeth (107b). 3. The gear teeth 77a of claim 2, wherein the gear teeth 109a of the reduction gear 109 and the inner gear teeth 107b of the rotor 107 are caught on the outer circumferential surface of the lower portion of the drive shaft member 77. The driving device of the washing machine, characterized in that is formed.