KR19980037932A - Power transmission device and drain valve operation device of washing machine - Google Patents

Abstract

The present invention relates to a power transmission device for a washing machine and a drain valve operating device, the object of which is that the state does not change even during a power failure.

In the present invention, one side of the operation line 41 is wound around the pulley 250. And by installing the motor 220 for rotating the pulley 250 to pull or loosen the operation line 41 to switch the power transmission device 100 or to open and close the drain valve (30). In addition, by arranging a plurality of reduction gears 240 and dignity gears 230 between the motor 220 and the pulley 250, the operation line 41 pulled when the deceleration and the motor 220 stops is the drain valve 30. It is to prevent the return to the original by the elastic restoring force of.

As a result, the pulled-out state of the operation line 41 can be maintained even during a power failure.

Description

Power transmission device and drain valve operation device of washing machine

The present invention relates to a power transmission device and a drain valve operating device of a washing machine, and more particularly, the structure is simplified and configured to maintain the pulled and pulled state and return to the original state using the majestic gear and the reduction gear. It relates to a power transmission device and a drain valve operating device of the washing machine configured to.

In general, a washing machine performs washing and dehydration by rotating a rotary blade and a rotating tub by using a rotational force of a motor. FIG. 1 is a view showing the bottom of the washing tub. As shown in the drawing, the bottom surface of the water tank 1 is provided with a motor 2, which is a power source for washing and dehydration, and a rotary blade (not shown) and a rotating tank (rotated by the motor 2 and the motor 2). A power transmission device 3 is installed between the power transmission devices 3 to selectively transmit the rotational force of the motor 2 to the rotary blades (not shown), the rotary blades (not shown), and the rotating tub (not shown). Switch the administration. And one side of the bottom surface of the water tank 1 is connected to the drain hose 4a for discharging the wash water, the drain valve 4 is installed in the middle of the drain hose (4a). And between the power transmission device 3 and the drain valve 4 is provided with an operating device 7 for operating them. The operating device 7 is connected to them via the operation line 5 via the link 6 to pull or release the operation line 5 so as to switch the power transmission device 3 and the drain valve 4. Simultaneously open and close.

2 is a diagram showing the configuration of the above-described operating device. As shown in the drawing, the operating device 7 is composed of a pulley 7f on which a part of the operation string 5 is wound and a motor 7a for rotating the pulley 7f. Between the motor 7a and the pulley 7f, gear reduction gears 7b and 7c composed of a plurality of gears are provided. The gear reduction gears 7b and 7c are driven side 7b and pulley connected to the motor 7a. Separately configured by a driven side 7c connected to 7f, a clutch gear 7d is provided between the driving side 7b and the driven side 7c to connect or disconnect them. The clutch gear 7d is installed to reciprocate by the solenoid 7e and the spring 7h. Then, a switch 7g is installed between the pulley 7f and the driven side reduction gear 7c to sense the pulling completion time of the operation line 5.

The operation of the control device configured as described above is as follows. First, during washing, the clutch gear 7d is in a state in which the driving side 7b and the driven side 7c are separated, so that the operation line 5 is released by the elastic force of the drain valve 4. Thus, the power train 3 is in the wash mode and the drain valve 4 is closed. The transition from the washing administration to the dehydration administration is as follows. First, the solenoid 7e is operated to operate the clutch gear 7d to connect the driving side 7b and the driven side 7c of the reduction gear parts 7b and 7c. Thereafter, the motor 7a is rotated, and the rotational force of the motor 7a is decelerated while passing through the driving side 7b and the driven side 7c of the reduction gear parts 7b and 7c, and then transferred to the pulley 7f. The pulley 7f is rotated so that the operation line 5 is wound. As the operation line 5 is wound in this manner, the power transmission device 3 connected to the operation line 5 is switched to the dehydration mode, and the drain valve 4 is opened. When the dehydration stroke is completed or the power failure occurs, the clutch gear 7d is returned to its original position by the spring 7h, so that the driving side 7b and the driven side 7c of the reduction gear are separated, so that the operation line 5 is drain valve 4. The drain valve 4 is closed by returning to the original state by the elastic force of the power supply, and the power transmission device 3 is switched to the washing mode to brake the rotating body. The reason why the rotating body is braked is because the power transmission device 3 has a function of braking the rotating tub in the washing mode.

However, such a power transmission device and a drain valve operating device of the conventional washing machine use a solenoid, so that the structure is complicated and malfunctions may occur when a problem occurs in an electric wire for supplying power to the solenoid. In addition, since the operation line returns to its original state due to the elastic force of the drain valve during a power failure, it is not possible to use the direct connection power transmission device in which the motor brakes the rotor directly without using a separate braking device because the rotating tub is separated from the motor. There was.

Therefore, the present invention is to solve the above problems, the object of the present invention is to simply configure the structure can reduce the manufacturing cost, the power transmission device and drain valve operation of the washing machine can be compactly configured product To provide a device.

Another object of the present invention is to provide a power transmission device and a drain valve operating device of a washing machine that can maintain an operating state even when the power is cut off.

1 is a view showing the bottom of a conventional washing machine tank.

Figure 2 is a view showing the configuration of a conventional power transmission device and drain valve operation device.

Figure 3 is a view showing the structure of a washing machine employing the operation device according to the present invention.

Figure 4 is a perspective view showing the configuration of a direct type power transmission device operated by the operating device according to the present invention.

5 and 6 are cross-sectional views showing the operation of the power transmission device shown in FIG. 4, FIG. 5 shows washing and FIG. 6 shows dehydration.

7 is a view showing the bottom of the water tank to which the present invention is employed.

8 is a view showing the configuration of an operating device according to the present invention.

9 and 10 are configuration diagrams of the gears shown in FIG.

Explanation of symbols on the main parts of the drawings

210: case 220: motor 230: worm gear 240: reduction gear

250: pulley 260: switch

The power transmission device and the drain valve operating device of the washing machine according to the present invention for achieving the above object is connected to the power transmission device and the drain valve of the washing machine via an operation line to pull or release the operation line to transmit the power transmission. The device is configured to switch the power transmission system and to open and close the drain valve, and maintain the state even in the event of a power failure.

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

3 is a view showing an internal configuration of a washing machine to which the present invention is employed. As shown in the drawing, the water tank 11 is installed inside the main body case 10. The rotating tank 12 is rotatably installed inside the water tank 11, and the rotary blade 13 is rotatably installed on the inner bottom surface of the rotating tank 12. And the lower surface of the water tank 11 is provided with a motor 20 for driving the rotating tank 12 and the rotary blade 13 in the center of the outer surface, the motor 20 is rotated forward and reverse, the rotation speed is variable and rotates when dewatering A model capable of braking the jaw 12 and the rotary blade 13 is installed. A power transmission device 100 is installed between the motor 20 and these rotating bodies to selectively transmit the rotating force of the motor 20 to the rotary blade 13 or the rotary blade 13 and the rotary tub 12. In the laundry, idle rotation of the rotating tub 12 is suppressed. And one side of the water tank 11 is connected to the drain hose 14 for draining the wash water, the free end of the drain lake 14 extends to the outside of the body case 10, the middle of the drain valve ( 30) is interposed.

The power transmission device 100, as shown in Figures 4, 5 and 6, the upper end is coupled to the rotary tub 12, the lower end of the hollow dewatering shaft 120 extending to the bottom of the water tank 11 Is installed inside the dehydration shaft 120, the upper end is coupled to the rotary blade 13 and the lower end is extended to the washing shaft 110, the dehydration shaft 120 coupled to the motor 20 to the washing shaft 110 It is roughly divided into a fixing member 140 for fixing the dehydration shaft 120 in order to suppress the idle rotation of the connection member 130 and the rotating tub 12 for coupling or separating.

The dehydration shaft 120 is installed to penetrate the water tank 11 up and down so that both top and bottom ends protrude into the inside and outside of the water tank 11, and the upper end is integrally coupled to the rotating tank 12. At this time, the reinforcement plate 191 is coupled to the portion where the dehydration shaft 120 is installed to reinforce the portion where the dehydration shaft 120 is coupled, and between the reinforcement plate 191 and the dehydration shaft 120 A bearing 192 for rotationally supporting the 120 is interposed. The upper end of the washing shaft 110 is installed in the dehydration shaft 120 is coupled to the rotary blade 13 and the lower end is coupled to the motor 20, the upper is serrated coupled to the rotary blade (13) .

And the lower end of the washing shaft 110 is extended to be exposed to the outside of the dehydration shaft 120, the rotating member 150 is installed to rotate integrally with the washing shaft 110, the reinforcement plate 191 The lower side of the fixing member 140 is fixedly coupled, and the dehydration shaft 120 between them is coupled to the fixing member 140 when ascending and the connecting member 130 coupled to the rotating member 150 when descending dehydration It is installed to rotate integrally with 120. That is, the rotating member 150 is installed to rotate integrally with the washing shaft 110 in a gear shape with the outer tooth 151, the inner tooth 141 is provided on the center of the fixing member 140, the connecting member 130. The outer tooth 132 and the inner tooth 131 are respectively formed on the upper and lower sides of the upper and lower teeth, and are engaged with the fixing member 140 when ascending, and are engaged with the rotating member 150 when descending. Meanwhile, three grooves 121 extending upward and downward are installed on the lower outer surface of the dewatering shaft 120 facing the connecting member 130 at equal intervals, and the grooves are provided on the inner surface of the connecting member 130 facing the connecting member 130. Protruding portion 133 is inserted into the 121 is provided so that the connection member 130 ascends by rotating the dehydration shaft 120 while being integral with the dehydration shaft 120. In this way, the connection member 130 is coupled to the fixing member 140 by raising the dehydration shaft 120 to fix or lower the dehydration shaft 120 and coupled to the rotating member 150 to wash the dehydration shaft 120. Rotate integrally with the shaft (110).

And a structure for elevating the connecting member 130 is provided. That is, the elevating member 160 is installed so as to be integrated with the connecting member 130 and rotate separately. That is, the elevating member 160 provided in a ring shape is installed to be coupled to the connecting member 130 via the bearing 93 so that the elevating member 160 and the connecting member 130 can be raised and lowered integrally but separately from each other. do. At this time, the lower inner surface of the elevating member 160 has a plurality of protruding jaw 162 is formed to support the bearing 93 inserted therein from the lower side, the upper side has a plurality of locking jaws 163 extending upwards The bearing 93 is coupled to the inner side of the elevating member 160 by being formed to support the upper side of the connecting member 130.

On the outer side of the elevating member 160, an elevating guide member 170 for inducing elevating of the elevating member 160 is installed. The lifting guide member 170 has a lifting guide hole 171 which slides by inserting a protrusion 161 formed to protrude outwardly of the lifting member 160 and is slidably extended, and the lifting guide hole 171 is vertically up and down. It is formed to be inclined so that the projection 161 rotates left and right along the inclined surface to elevate the elevating member 160 and the connecting member 130.

In addition, a rotating member 180 is installed to lift the connecting member 130 by rotating the lifting member 160. The rotating member 180 has a free end of the protrusion 161 penetrating the lifting guide hole 171. It is disposed on the outer side of the elevating guide member 170 so as to be coupled to its inner side, and the rotary gear 181 having an external tooth 181a and one end thereof are engaged with the rotary gear 181, and the other end of the operation line (41 in Fig. 7). It is connected to the) includes a rotation bar 182 for rotating the rotation gear 181 by the reciprocating motion of the operation line (41). A groove 181b is formed on the inner surface of the rotation gear 181 opposite to the projection 161 so that the projection 161 is inserted and coupled, and the groove 181b extends up and down so that the projection 161 is a rotation gear ( 181 to move up and down along the elevation guide hole 171 while integrally rotating. And the rotation bar 182 is installed so that both ends are rotated by the rotation shaft 183 fixed to the lower surface of the water tank 11, teeth (182a) which is bitten by the outer tooth of the rotation gear 181 at one end thereof. Is provided, the other side is installed connected to the operation line (41). Both ends of the rotation bar 182 are installed to rotate to the starting point with the rotation shaft 183, the rotation shaft 183 is installed to the operating line 41 side to enlarge the rotation width of the rotation gear (181). The teeth 182a formed at one end of the rotation bar 182 are extended in an arc shape close to a straight line so as to sufficiently rotate the rotation gear 181.

Subsequently, an operation device for adjusting the power transmission device by operating the rotating member through the operation line will be described.

Referring to FIG. 7, an operation device 200 for switching the power transmission device 100 and opening / closing the drain valve 30 is installed at one side of the lower surface of the water tank 11, and the operation device 200 includes an operation line ( 41) is connected to the power transmission device 100 and the drain valve (30). That is, the operation device 200 is connected and installed at one end of the operation line 41, and the drain valve 30 is connected and installed at the other end, and the link 42 is installed at the middle of the operation line 41. The other end of the rotating bar 182 is installed in the coupling. At this time, although not shown, the drain valve 30 is provided with a spring for elastic recovery when the external force is extinguished.

8, 9, and 10, a manipulation apparatus according to the present invention will be described. As shown therein, the operation device 200 is accommodated and installed in the case 210, and the pulley 250 and the pulley 250 in which one side of the operation line 41 is wound inside the case 210. A plurality of reduction gears 240 interposed between the motor 220 and the motor 220 and the pulley 250 to rotate the dignity gear 230 interposed between the reduction gear 240 and the motor 220. Include. The biggest feature of the operation device 200 according to the present invention is to maintain the state even if the power supply is cut off. To this end, a plurality of reduction gears 240 and dignity gears 230 are disposed between the pulley 250 and the motor 220. In addition, a switch 260 for detecting the stopping time of the motor 220 is installed. The pulley 250 has two ribs 251 and 252 respectively installed to correspond to the opening and closing time of the drain valve 30. The switch 260 is installed so that the contact is converted by the contact with the ribs 251 and 252 and stops the operation of the motor 220 when the contact is converted.

Here, the reduction gear 240 and the majestic gear 230 is configured to maintain the pulled operation line 41 when the motor 220 is stopped. That is, the elastic restoring force of the fully open drain valve 30 is greater than the stopping force of the motor 220. Therefore, the reduction gear 240 and the majestic gear 230 attenuates the elastic restoring force of the drain valve 30 to be smaller than the stopping force of the motor 220 to be transmitted to the motor 220 so that the operation of the motor 220 stops. The operation line 41 does not return to normal. In this case, the dignity gear 230 is installed on the rotating shaft 221 of the motor 220 and engaged with the reduction gear 240 so that a smaller number of reduction gears 240 are required by expanding the attenuation degree of the elastic restoring force. It is. That is, the amount of attenuation in the dignity gear 230 is much greater than the elastic restoring force offset by each reduction gear 240.

The operation of the power transmission device and the drain valve operating device of the washing machine according to the present invention configured as described above will be described together with the operation of the washing machine and the power transmission device.

First, I will explain the washing administration. In the laundry administration, the connection member 130 is elevated and engaged with the fixing member 140, and the dehydration shaft 120 is separated from the laundry shaft 110. In this state, the motor 20 rotates the washing shaft 110 forward and backward at a rotation speed suitable for washing. The rotating wing 13 coupled to the forward and backward washing shaft 110 rotates forward and backward to form a water stream to perform a washing stroke. (Figure 5)

We will continue to explain the transition to dehydration administration. When the motor 220 is operated to generate a rotational force, the rotational force is decelerated at a low speed while passing through the majestic gear 230 and the reduction gear 240 to gradually rotate the pulley 250 integrally installed at the last reduction gear 240. Let's do it. As a result, the operation line 41 is pulled to one side by winding one side of the pulley 250 to open the drain valve 30 and at the same time counterclockwise from one side of the rotation bar 182 to the rotation shaft 183. Rotate to (Figure 7). As a result, one end of the rotation bar 182 is rotated clockwise so that the rotation gear 181 meshed with the teeth 182a formed at one end is rotated in the clockwise direction (Fig. 7). As the rotation gear 181 rotates clockwise, the projection 161 rotates in the same direction. As a result, the protrusion 161 is lowered along the inclined surface of the elevating guide hole 171 so that the elevating member 160 and the connecting member 130 which are interlocked with the protrusion 161 at the time of elevating are lowered and disposed below the rotating member 150. Is matched to. That is, the inner tooth of the connecting member 130 is engaged to the outside of the rotating member 150, the connecting member 130 is lowered along the groove 121 formed up and down on the dehydration shaft (120). At this time, if the valley of the lower teeth of the inner tooth 131 of the connecting member 130 and the valley of the outer tooth 151 of the rotating member 150 does not match exactly, the connecting member 130 is a spring 194 installed in the protrusion 133 ( The force of 195 is rotated a predetermined width in the circumferential direction so that the hill and the valley are correctly engaged. (Figure 6)

At the time when the above process is completed, the rib 251 installed in the pulley 250 converts the contact point of the switch 260 to stop the operation of the motor 220. The operation line 41 in which the pulling force of the motor 220 is extinguished is maintained, because the elastic restoring force of the drain valve 30 is reduced to a plurality of reduction gears 240 and dignity gears 230. Since the attenuation force is reduced to less than the stopping force of the 220 to the motor 220, the operation line 41 is to maintain the pulled state.

Dehydration operation is performed by rotating the motor 20 at a speed suitable for dehydration in the above state. That is, the rotational force of the motor 20 is transmitted to the rotary blade 13 and the rotating tub 12 through the laundry shaft 110 and the dehydration shaft 120 connected thereto so that they rotate at a high speed to generate centrifugal force, which causes water to be washed in the laundry. Centrifuge.

When the washing stroke is completed, the operation line 41 is released from the pulley 250 by the elastic restoring force of the drain valve 30 by rotating in the opposite direction of rotation for the switch to the motor 220. As a result, the drain valve 30 is closed and the power transmission device 100 is switched to the reverse of the switching to the dehydration stroke.

On the other hand, in the case of sudden braking or power failure during dehydration operation, the state in which the washing shaft 110 and the dehydration shaft 120 are coupled does not change, and thus, the rotary tub 12 and the rotary blade 13 are stopped by the stopping force of the motor 220. Stop.

As described in detail above, the power transmission device and the drain valve operating device of the washing machine according to the present invention is adopted in a direct-type power transmission device because the state is not changed even in the case of power failure, the rotating tub and the rotor blades in the dehydration administration motor To allow direct braking. In addition, since the speed reduction is implemented by using a mixture of the dignity gear and the reduction gear, there is an advantage in that a structure for obtaining a desired reduction ratio can be simply configured.

Claims (4)

It is connected to the power transmission device 100 and the drain valve 30 of the washing machine via the operation line 41 to pull or release the operation line 41 to switch the power transmission system to the power transmission system. And opening and closing the drain valve 30, the power transmission device and drain valve operating device of the washing machine, characterized in that to maintain the state even in the event of a power failure. The method of claim 1, The power transmission device and the drain valve operation device, One side of the operation line 41 is wound around the pulley 250, Motor 220 provided with the worm gear 230 on the rotary shaft 221, Power transmission device and drain valve operating device of the washing machine, characterized in that it comprises a plurality of reduction gear 240 provided between the majestic gear 230 and the pulley (250). The method of claim 2, Contact switch is converted by the pulley 250, the switch for switching the operating time of the motor 220 is provided with a power transmission device and drain valve operating apparatus of the washing machine. The method of claim 3, Ribs 251 and 252 are provided on the pulley 250 so as to face the opening and closing points of the drain valve 30, and the switch 260 is in contact with the ribs 251 and 252. Power transmission device and drain valve operating device of the washing machine characterized in that the contact is converted by.