KR0132996Y1 - Driving gear of a washing machine - Google Patents

Abstract

The present invention relates to a driving device of a washing machine, the power of the motor (63) to drive the pulsator (67) at the time of washing through the reduction gear body 71 from the drive washing shaft (69) to reduce the rotational speed It is transmitted to the washing shaft 73, the power of the motor 63 is removed from the drive washing shaft 69 through the upper drum (81, 79) to drive the washing and dehydration tank (65) during dehydration. In the drive unit of the washing machine transmitted to the contraction 75, the driving washing shaft 69 is disposed on the center line of the drive washing shaft 69 to generate power to maintain the rotational balance of the washing machine. The motor 63 and the operating means 102 arranged and operated outside the drive washing shaft 69 so as to change the transmission path of the power generated by the motor 63, and the operating means 102 is operated. It consists of the operating means 103 disposed on one side of the operating means 102 to A characterized, because it is configured in this manner, the rotational balance of the outer tank is maintained and the manufacturing cost reduced, and at the same time reduces the vibration and noise of the washing machine has a simple structure.

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.

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

4 is an operational state diagram of a 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: motor 65: washing and dehydration tank

67 pulsator 69 drive washing shaft

71: reduction gear 73: driven washing shaft

75: dewatering 79: upper drum

81: lower drum 102: operating means

103: operating means 104: first connector

105: retaining ring 107: second connector

109: elastic member 111: lever

113: wire 114: motor

The present invention relates to a driving device of a washing machine.

Conventionally, as shown in FIG. 1, the outer tub 3 is provided in the washing machine main body 1, and the rotational force of the motor 5 is transmitted to the bottom surface of the outer tub 3 through the belt 7. The driving device 13 for driving the washing and 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. A pulsator for washing by forming a stream of water in the wash water stored in the washing and dewatering tank 9 while repeating the forward and reverse rotations according to the driving of the motor 5 in the washing and dewatering tank 9. (11) is provided on the washing shaft of the drive device (13).

The outer tub 3 is suspended in the tension bar 17 via the 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 appeal 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 washing water is discharged according to the operation of the draining means 25, and when water is supplied through the water supply means 23, rinsing is performed several times, and the washing and dehydrating tank 9 is rotated at high speed. The dehydration is performed from the laundry cloth by centrifugal force to complete the washing.

As shown in FIG. 2, the drive washing machine of the conventional washing machine includes a drive washing shaft 29 having a pulley 27 fixed at a lower end thereof to receive a rotational force through the belt 7 according to the driving of the motor 5. It is free to rotate, the outer peripheral surface of the drive washing shaft 29 is inserted into the drive coupling 31 and the upper side of the drive coupling 31, the first dehydration shaft 33 is not shown bushing member Is interposed rotatably installed, the upper portion of the first dehydration shaft 33 is coupled to the connector 35, which serves as a brake drum is rotatably connected integrally with the first dehydration shaft (33).

The 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 the washing and dehydration tank is disposed on the upper portion of the second dehydration shaft 37. 9) is coupled and is free to rotate integrally with the second dehydration shaft 37, the driven through 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 rotatably inserted.

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. The brake band 49, which is connected to the support 51, is disposed. It is also 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 latch spring 55 is disposed, and the clutch lever 59 is connected to the latch 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.

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 and 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 directions as described above, so that the brake band 49 is released and the clutch spring 55 is wound. 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.

However, in the driving apparatus of the conventional washing machine configured as described above, since the rotational force of the motor 3 is transmitted to the drive washing shaft 29 through the belt 7, the motor is installed eccentrically on the bottom surface of the outer tub 3. (5) had a problem of causing vibration noise of the washing machine.

In addition, since the power is switched by the clutch, there is a problem that the structure of the drive device is complicated.

Therefore, the present invention has been made to solve the above problems, the object of the present invention is to arrange the motor to the drive washing shaft in a straight line by transmitting power, maintaining the rotation balance of the outer tub of the washing machine to reduce the vibration noise of the washing machine To provide a drive.

Another object of the present invention is to provide a driving apparatus of a washing machine, by reducing the manufacturing cost by simplifying the structure by switching power by the serration coupling of the connector.

The driving device of the washing machine according to the present invention made to achieve the above object is a power driven to drive the pulsator during washing, the rotational speed is reduced from the driving washing shaft through the reduction gear to the driven washing shaft, and washing when dewatering A driving device for a washing machine in which power is transferred from the driving washing shaft to the dehydration shaft through a lower drum and an upper drum to drive the dehydration tank, wherein the driving washing shaft generates power to drive the driving washing shaft and maintains a rotational balance of the washing machine. A motor disposed on a center line of the drive laundry shaft, an operation means disposed and operated outside the drive laundry shaft so as to change a transmission path of power generated by the motor, and on one side of the operation means to operate the operation means. Characterized in that consisting of the operation means disposed.

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 the drawing 3, an outer tub is provided in the washing machine main body, and a motor 63 is disposed below the outer tub 61 to generate power, and the motor 63 is disposed in the outer tub 61. Washing and dehydration tank (65) is disposed to dehydrate the laundry cloth by centrifugal force generated by the driving of), and the inside of the washing and dewatering tank (65) is rotated forward or by the driving of the motor (63). The pulsator 67 which wash | cleans by forming a water flow in the wash water stored in the washing-and-dehydration tank 65, repeating a reverse rotation is arrange | positioned. At this time, the motor 63 is disposed on the center line of the outer tub 61 to maintain the rotational balance of the outer tub 61.

The drive washing shaft 69 is directly fixed to the upper end of the motor shaft 63a on the upper side of the motor 63, and the reduction gear body rotates the pulsator 67 on the upper side of the drive washing shaft 69. A driven washing shaft 73 is disposed through the 71, and a dewatering shaft 75 rotates the washing and dewatering tank 65 on the outer circumferential surface of the driven washing shaft 73. It is freely rotated about 73. At this time, the dehydration shaft 75 is fixed to the bottom of the washing and dewatering tank 65 by the fastening member 77.

An upper drum 79 is tightly fixed to the lower end of the dehydration shaft 75 so as to protect the reduction gear body 71 and transmit the rotational force of the motor 63 to the washing / dehydration tank 65. The lower drum 81 is tightly fixed to the lower end surface of the upper drum 79. At this time, the inner circumferential surface of the lower drum 81 is rotatably coupled to the outer circumferential surface of the drive laundry shaft 69.

In addition, the upper case 83 and the lower case 85 are coupled to each other by a plurality of fastening members 87 so as to protect the upper drum 79 and the lower drum 81 and constrain the rotation at the same time. The upper support member 89 is disposed outside the upper case 83 to protect the upper case 83 and to support the upper case 83 and the lower case 85. The lower support member 91 is disposed outside the lower case 85 to protect the case 85 and to support the motor 63.

At this time, the lower end of the upper case 83 and the upper end of the lower case 85, flange portions 83a and 85a are formed to facilitate each other, the plurality of fastening members 87 are the plan The upper case 83 and the lower case 85 are coupled to each other at a predetermined position of the branches 83a and 85a.

The driving washing shaft 69 is supported by a lower rotating bearing 93 press-fitted into the lower case 85 so as to easily rotate in accordance with the rotation of the motor shaft 63a of the motor 63. It is supported by a lower sliding bearing 95 press-fitted into the lower drum 81, and the dehydration shaft 75 is press-fitted in the upper case 83 so as to easily rotate in accordance with the rotation of the upper drum 79. It is supported by the rotary bearing 97 and at the same time by the upper sliding bearing 99 pressed into the upper drum 79.

The packing member 100 is disposed at a predetermined position by the stop ring 101 on the outer circumferential surface of the dehydration shaft 75 to prevent leakage between the dewatering shaft 75 and the outer tub 61. At this time, the lower end of the packing member 100 is tightly fixed to the upper end of the upper case (83).

On the other hand, the operating means 102 is disposed outside the drive washing shaft 69 to change the transmission path of the power generated by the motor 63, and the operating means 102 on one side of the operating means 102. The operating means 103 is arranged to operate ().

The operation means 102 is fixed to the middle of the inner circumferential surface of the lower case 85, the fixing ring 105 is fixed so as to restrain the rotation of the lower drum 81 via the first connector 104 as a medium, The lower side of the first connector 104 is configured to transfer / block the rotational force of the motor 63 to the dehydration shaft 75 by coupling / disconnecting the driving laundry shaft 69 and the lower drum 81 to each other. The two connectors 107 are supported and disposed by the elastic member 109.

The operation means 103 is a lever 111 is hingedly coupled to the upper side of the first connector 104 to move the first connector 104 to the lower side, the right side of the lever 111 is connected to a wire ( The motor 114 is arranged so as to drive the lever 111 via the medium 113.

At this time, the lever 111 is hinged to the end of the protrusion (85b,) formed in the flange portion (85a) of the lower case 85, one end of the wire 113 of the motor of the motor 113 It is fixed to be wound on a pulley (not shown) disposed on the shaft, and the other end of the wire 113 is fixed to the right end of the lever 111.

On the other hand, a protruding plate 63b is formed on the outer circumferential surface of the motor 63 so as to easily dispose the motor 63 on the lower supporting member 91, and the lower support is formed at the edge of the protruding plate 63b. A plurality of fastening members 115 are fastened to fix the protrusion plate 63b to the member 91.

The driving washing shaft 69 is a two-stage shaft having a smaller upper diameter than the lower portion thereof, and the lower end thereof is flange-coupled to the motor shaft 63a, and the outer peripheral surface of the upper end thereof is geared to the reduction gear body 71. A gear tooth is formed, and a serration portion 69b is formed on the outer circumferential surface of the lower portion thereof so that the second connector 107 moves in the axial direction and is coupled / separated, and on the outer circumferential surface of the upper portion of the lower drum 81. The inner circumferential surface is freely disposed.

At this time, the lower side and the upper side of the lower side of the lower drum 81 and the upper side of the driving washing shaft 69 is freely in close contact with the side end face to meet the step by the diameter difference.

The connecting gear 71 has a plurality of planetary gears 117 caught by the gear teeth of the drive laundry shaft 69 and a rotational movement of the planetary gear 117 to the driven laundry shaft 73 at one end thereof. The part is fixed to the driven laundry shaft 73 and the other end thereof is composed of a connector 121 which is freely rotated to the center of the planetary gear 117 by the connecting shaft member 119.

The driven laundry shaft 73 has an upper end thereof coupled to the pulsator 67 and a lower end thereof fixed to the connector 121 of the reduction gear body 71.

The upper drum 79 has a container shape in which a lower side thereof is connected to the lower drum 81, and a gear tooth 79a is formed on an inner circumferential surface thereof so as to be geared to the planetary gear 117, and an upper portion of the upper drum 79 is formed. The driven laundry shaft 73 is freely connected to the driven washing shaft 73 by the upper slide bearing 99.

The lower drum 81 has a first fragment so that the flange portion 81a is fixed to the lower end of the upper drum 79, and the lower portion of the flange portion 81a is serrated and coupled to the first connector 104. The migration part 81b is formed, and the second single serration part 81c is formed below the first single serration part 81b so as to serrately couple to the second connector 107.

At this time, the outer diameter of the first stage serration section 81b and the outer diameter of the second stage serration section 81c are different from each other and the second stage serration to change the transmission path of power from the driving washing shaft 69. The outer diameter of the portion 81c is equal to the outer diameter of the serration portion 69b of the drive laundry shaft 69.

That is, the outer diameter of the first single serration section 81b is larger than the outer diameter of the second single serration section 81c.

One side of the upper support member 89 is formed with a reinforcing rib (89a). The flange portion 83a of the upper case 83 and the flange portion 85a of the lower case 85 are fastened to the upper support tube 89 by the fastening member 123.

Serration teeth are formed on the inner circumferential surface of the first connector 104 to be serration coupled to the first end serration portion 81b of the lower drum 81, and the lever (on the upper surface of the first connector 104). The groove 104a is formed to contact 111. In addition, serration teeth are formed on the outer circumferential surface of the first connector 104 and the inner circumferential surface of the fixing ring 105 so as to be serration-coupled with each other.

The lever 111 has a bent portion 111a formed at one end thereof to be easily accommodated in the groove 104a and to push the first connector 104, and a bent portion to absorb the impact at the middle portion thereof. 111b is formed and has a structure that swings around the hinge point 111c.

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 administration, as shown in FIG. 3, the lever 111 maintains a horizontal state, and the elastic member 109 moves the second connector 107 and the first connector 104 upward. Since the second connector 107 is serrated coupled to the lower drum 81, the first connector 104 is serrated coupled to the fixing ring 105 and the lower drum 81.

Accordingly, the rotational force by the motor 114 is decelerated in the reduction gear body 71 disposed in the upper and lower drums 79 and 81 from the drive washing shaft 69 and transmitted to the driven washing shaft 73. The pulsator 67 coupled to the upper end of the shaft 73 washes while being rotated forward or reverse.

At this time, since the first connector 104 is coupled to the fixing ring 105 and the lower drum 81, the lower drum 81 is connected to the fixing ring 105 fixed to the lower case 85. Does not rotate by Therefore, the washing-and-dehydrating tank 65 fixed by the lower drum 81 by the dehydration shaft 75 and the upper drum 79 itself does not rotate because it is not affected by the washing cloth and the water flow.

Next, in the dehydration operation, as shown in FIG. 4, when the motor 114 rotates forward by a predetermined amount in accordance with a control signal of a control means (not shown), the wire 113 is wound on a pulley (not shown). The lever 111 connected to the wire 113 rotates counterclockwise around the hinge point 111c, and an end portion of the bent portion 111a of the lever 111 is formed in the groove of the first connector 104. In close contact with 104a, the first connector 104 is pushed downward.

According to the push force of the bent portion 111a, the first connector 104 and the second connector 107 adjacent to the lower side of the first connector 104 move downward to overcome the elastic restoring force of the elastic member 109. Thus, the second connector 107 is simultaneously serrated to the serration portion of the drive laundry shaft 69 and the second stage serration portion 81d of the lower drum 81, and the first connector 104. ) Is separated from the first stage serration portion 81b of the lower drum 81 and the serration portion of the fixing ring 105.

Accordingly, the rotational force by the motor 114 is transmitted from the drive washing shaft 69 to the driven washing shaft 73 through the reduction gear body 71 disposed in the upper and lower drums 79 and 81, thereby driving the driven washing shaft. The pulsator 67 coupled to the end of 73 rotates.

At the same time, the rotational force by the motor 114 is transmitted from the driving laundry shaft 69 to the lower drum 81, the upper drum 79, and the dehydration shaft 75 in turn, and is coupled to the end of the dehydration shaft 75. The washed and dewatering tank 65 rotates at the same speed as the pulsator 67 to perform dehydration.

Next, after the dehydration stroke is completed, if the motor 114 reverses by a predetermined amount according to a control signal of a control means (not shown), the wire 113 is released from a pulley (not shown) and connected to the wire 113. The lever 111 rotates clockwise around the hinge point 111c, and an end of the bent portion 111a of the lever 111, which is pushing the first connector 104 downward, moves upward. Since the elastic member 109 pushes the second connector 107 and the first connector 104 upward, the second connector 107 is serration-coupled to the lower drum 81 and the first connector 107. The connector 104 is serration-coupled to the fixing ring 105 and the lower drum 81 to prepare the washing stroke again.

As described above, the driving device of the washing machine according to the present invention directly connects the rotational force of the motor to the driving washing shaft, and simultaneously switches the power by the serration coupling of the connector, so that the rotation balance of the outer tub is maintained and vibration noise of the washing machine is reduced. At the same time, the structure is simple and the manufacturing cost is very practical design.

Claims (3)

A driven laundry shaft provided between the pulsator and the reduction gear body so as to reduce the rotational speed of the power during washing, and to the pulsator, and the upper and lower drums of the reduction gear body without reducing the rotational speed of the power in the reduction gear body. In the drive unit of the washing machine comprising a dehydration shaft installed between the upper drum and the dehydration tank so as to be connected directly to the dehydration tank, and the upper and lower cases installed to wrap the reduction gear body and to fix the position on the bottom of the outer tank, A motor fixed to a lower case, which is a bottom of an outer tub, positioned on a concentric shaft of a driven laundry shaft and a dewatering shaft, and a drive laundry configured to transmit power of the motor to the reduction gear to decelerate, and not to transmit rotational force to a lower drum; Transmission and blocking of power between the shaft and the drive laundry shaft and the lower drum, An actuating means composed of a serration combination for separating / combining the drive laundry shaft and the lower drum so that power is directly transmitted to the drive gear and is transmitted to the reduction gear when shut off. And a driving means for driving it to transmit / block power while being driven. According to claim 1, wherein the operating means is installed so that the serration is coupled to the outer ring is fixed to the fixed ring fixed to the lower case when the rising, and the inner side is serration coupled with the lower drum and the serration coupling is released when falling It is in close contact with the first connector and the lower part of the first connector and is supported by an elastic member at the bottom, and blocks the power between the washing drive shaft and the lower drum when the first connector is raised and the power when the first connector is lowered. Driving device of the washing machine, characterized in that consisting of a second connector coupled to the serration to deliver. According to claim 1, wherein the operation means is installed so that one end is in contact with the opposite side of the elastic member of the first connector, the lever hinged to the lower case, and the wire is rotated around the hinge Driving device for a washing machine, characterized in that consisting of a motor connected to the other end.