KR19990013233A - Power change device of washing machine - Google Patents

Abstract

The power switching device of the washing machine according to the present invention is a washing machine having a power switching means between the power generating means and the deceleration means to disconnect and connect the power transmitted to the washing shaft, wherein the power switching means is the upper connector The upper clutch coupled to the inner circumferential surface is coupled to the plurality of toothed projection formed to project perpendicular to the outer circumferential surface of the upper clutch and the lower clutch, which is installed on the lower side of the upper clutch and the planetary gear is tooth-aligned to the outer peripheral surface of the center and Since the upper clutch is moved up and down to be separated and engaged with the lower clutch, characterized in that it is made of a power control means installed on the outside of the upper and lower clutch, by installing a power switching means to the outside of the reduction means of the entire washing machine Not only reduce the height but also simplify the structure of the power switching means Sikimyeo reduction, as a force to push up the upper clutch according to the up and down operation of the clutch guide will not be distributed evenly by the clutch guide does not inverted assembly.

Description

Power change device of washing machine

The present invention relates to a washing machine, and more particularly, to a power switching device of a washing machine for switching the washing and dewatering operation of the washing machine by intermittent power.

In the conventional washing machine, as shown in FIGS. 1 to 4, a dehydration tank 6 is rotatably installed inside the washing tank 2 installed in the washing machine, and inside the dewatering tank 6 when washing. A stirring member 7 for stirring the laundry therein is attached.

The lower part of the washing tank 2 is provided with a driving means for binding and driving in the center of the dehydration tank (6) and the stirring member (7).

That is, the driving means is a power generating means (10) for rotating the drive shaft 20 by the power applied to the lower end of the washing tank (2), and the driven shaft (21) by reducing the rotation of the drive shaft (20) during washing Decelerating means (30) installed on the upper portion of the power generating means (10) to transmit to the power generating means (10) and deceleration means (30) to disconnect and connect the power transmitted to the driven shaft (21). It consists of a power switching means 40 installed between.

Here, the power generating means 10 is composed of a stator 11 to form a magnetic field by the applied power, and a rotor 12 to rotate by the magnetic field formed on the stator (11).

At this time, the ball bearing 13 is inserted into the upper and lower portions of the stator 11 and the rotor 12 through the fastening member 99 and at the same time to smoothly rotate the drive shaft 20 in the center thereof. Upper and lower housings 14 and 15 are provided.

The reduction means 30 has an internal gear 31 having teeth formed on an inner circumferential surface thereof, a plurality of planetary gears 32 installed therein so as to rotate in engagement with teeth of the internal gear 31, and the plurality of planetary gears 32. It consists of the carrier 33 which connects the central axis 32a of ().

In addition, the upper and lower connectors 34 and 35 are rotatably mounted on the outer side of the deceleration means 30 via a bushing 98 inserted into the inner circumference of the driven shaft 21 and the driving shaft 20. The lower case 37 is provided with a ball bearing 36 press-fitted on the lower outer circumferential surface of the lower connector 35, and between the upper outer circumferential surface of the upper connector 34 on the upper side of the lower case 37. The upper case 38 to which the ball bearing 36 is press-fitted is attached.

The power switching means 40 is a brake band 42 is mounted so as to release the binding force holding the upper connector 34 when the brake lever 41 is operated on the outer periphery of the upper connector 34, One side is hinged to the support bracket 43 erected on the upper housing 14 and the other side is coupled to the roller lever 44, the clutch lever 45 and the tooth fitting to the lower end of the lower connector 35 And the upper clutch 37 which is rotatably coupled and interlocks with the lower clutch 46 at the lower end by moving up and down by the seesaw movement of the clutch lever 45 and interlocks with the upper clutch 37, and the upper clutch 47 of the upper clutch 47. It is installed in the inner groove is composed of a spring (48) acting to engage the lower clutch (46) while lowering the upper clutch (47) is compressed when washing by the operation of the clutch lever (45) and dehydrated when dewatering. have.

The clutch lever 45 is provided with a protrusion member 45a on one side thereof in which the brake lever 41 is rotated about its axis 41a so that the rotary block 41b of the brake lever 41 comes into contact with the clutch lever 45. It is.

However, the conventional washing machine configured as described above is provided with a power switching means 40 for switching power according to dehydration and washing stroke between the deceleration means 30 and the power generating means 10. The overall height is high, the number of parts constituting the power switching means 40 and at the same time there is a problem that not only the structure is complicated, but also the cost of the parts rises.

Therefore, the present invention has been made to solve the above problems, the object of the present invention is to reduce the height of the washing machine as well as to simplify the structure of the power switching means by installing a power switching means to the outside of the deceleration means. It is to provide a power switching device of a washing machine that reduced the product cost.

The power switching device of the washing machine according to the present invention made to achieve the above object, in the washing machine provided with a power switching means between the power generating means and the deceleration means to disconnect and connect the power transmitted to the washing shaft. The power switching means includes an upper clutch coupled to an inner circumferential surface of the plurality of toothed protrusions protruding perpendicularly to the outer circumferential surface of the upper connector, the upper clutch coupled to be movable up and down, and installed on the outer circumferential surface of the center of the upper clutch. A lower clutch to which the planetary gear is tooth-fitted, and a power control means installed on the outside of the upper and the lower clutch so that the upper clutch is moved up and down and engaged with the lower clutch.

1 is a longitudinal sectional view showing a driving device at the time of conventional washing;

2 is a longitudinal sectional view showing a driving apparatus at the time of conventional dehydration;

3 is a plan view showing an operating state of the clutch lever at the time of conventional washing;

4 is a plan view showing the operating state of the clutch lever at the time of dehydration in the prior art,

5 to 10 are views according to the first embodiment of the present invention.

5 is a longitudinal sectional view showing a driving device at the time of washing;

6 is a longitudinal sectional view showing a driving device at the time of dewatering;

7 is a partially cutaway perspective view illustrating a power switching device of the washing machine;

8 is an exploded perspective view showing a power switching device of the washing machine;

9 is a plan view showing the operating state of the power switching device at the time of washing,

10 is a plan view showing the operating state of the power switching device at the time of dehydration,

11 is an exploded perspective view showing a power switching device of a washing machine according to a second embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: power generating means 30: deceleration means

100: power switching means 110: upper clutch

111: protrusion groove 112: flange portion

113: groove 114: boss

115: lower protrusion 116: buffer member

120: lower clutch 121: groove

122: tooth 130: power control means

132: clutch lever 133: cam gear

133a: Teeth 133b: Guide Groove

133c: second guide groove 134: cam

134a: inclined slit groove 134b: inclined groove

135: clutch guide 135a: guide projection

135b: the second guide projection 135c: the locking projection

(First embodiment)

Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. 5 to 10.

For reference, the same configuration and the same reference numerals are used for the same configuration as the conventional configuration, and detailed description thereof will be omitted.

As shown in Fig. 5 to 10, the lower portion of the washing tank 2 is provided with a driving means for binding and driving in the center of the dehydration tank 6 and the stirring member (7).

That is, the driving means is a power generating means 10 for rotating the drive shaft 20 by the power applied to the lower end of the washing tank 2, and the washing shaft 21 by reducing the rotation of the drive shaft 20 during washing Decelerating means (30) installed on the upper portion of the power generating means 10 to transmit to) and the power generating means (10) and the deceleration means (30) to disconnect and connect the power transmitted to the laundry shaft (21) Motor control means for controlling the power switching means 100 installed between the and the drive shaft 20 inserted in the center of the power generating means 10 to rotate forward and reverse during washing and rotate in one direction when dewatering It consists of 200.

In this case, the power switching means 100 is the upper clutch 110 and the upper clutch coupled to the inner circumferential surface is coupled to the plurality of teeth projection (35a) protruding perpendicularly to the outer circumferential surface of the upper connector 34 to move up and down, The lower clutch 120 is installed on the lower side of the 110 and the planetary gear 32 is tooth-fitted to the outer peripheral surface of the center thereof, and the upper clutch 110 is moved up and down to be separated from the lower clutch 120. And it is composed of the power control means 130 installed on the outside of the upper and lower clutches 110 and 120 to engage.

The upper clutch 110 has a protrusion groove 111 formed to be integrally rotated by inserting the toothed projection 35a of the upper connector 34 on an inner circumferential surface thereof, and a flange portion 112 perpendicular to the upper outer circumferential surface thereof. , A boss portion 114 having a U-shaped groove 113 formed at a lower end of the flange portion 112, a plurality of lower protrusions 115 protruding from a lower surface of the boss portion 114, and the lower protrusions 115. Shock absorbing members 116 are inserted into the outer surface of the) so as not to generate noise due to its wear.

The lower clutch 120 includes a plurality of recesses 121 into which the lower protrusions of the upper clutch 110 are inserted into the upper surface of the outer circumference, and a plurality of planetary gears on the outer circumferential surface of the central part inserted into the driving shaft 20. Teeth 122 are formed so that 32 is tooth-fit.

The power control means 130 is coupled to one side of the upper housing 14 via the shaft member 131 and the clutch lever 132 rotated left and right by a link member 137 operated by a drain motor not shown. And a cam gear 133 rotatably engaged with the fan-shaped gear 132a of the clutch lever 132 and an inner circumferential surface of the cam gear 133 and attached to the upper housing 14. 134 and guide protrusions 135a provided on the inner circumferential surface of the cam 134 and formed on the outer circumferential surface thereof move upwardly in the inclined slit groove 134a of the cam 134 by the rotation of the cam gear 133. And the clutch guide 135 to apply a force to the lower surface of the flange portion 112 of the upper clutch 110 so that the upper clutch 110 is separated from the lower clutch 120 by moving upward. Upper and lower teeth of the clutch guide 135 in the U-shaped groove 113 of 110. Compression and elasticity according to the copper is made of an elastic member 136 to act to engage the lower clutch 120 while lowering the upper clutch 110.

Here, the cam gear 133 is formed on the lower end of the outer peripheral surface of the teeth 133a formed to be interlocked in accordance with the rotation of the clutch lever 132 is tooth-fit with the gear 132a of the clutch lever 132, both sides thereof The inner circumferential surface and the lower surface thereof are formed in the guide groove 133b formed so that the guide protrusion 135a of the clutch guide 135 slides up and down.

On the other hand, the motor control means 200 is fastened to the lower surface of the drive shaft 20 by the fastening member 99, the sensor fixing member 210, the sensor 211 is attached to the lower surface of the outer peripheral surface and the sensor ( 211 and a circuit board fixing member 220 fastened to the upper housing 15 so that the circuit board 211 is detected.

In the figure, reference numeral 138 denotes a return spring.

Next, the operation and effect by the first embodiment of the present invention thus constructed will be described.

First, when a desired washing condition is selected at the time of washing and power is applied, an appropriate amount of washing water is supplied into the dewatering tank 6, and the stator 11 of the power generating means 10 installed at the lower center of the washing tank 2 is supplied. A magnetic field is formed, and the drive shaft 20 rotates at high speed according to the rotation of the rotor 12 rotating under the influence of the magnetic field of the stator 11. The drive shaft 20 transmits the rotational force of the lower clutch 120 press-fitted to the upper end thereof, and a plurality of planetary gears 32 engaged with the teeth 122 by the serration method on the upper end of the lower clutch 120. ) Rotates, and the upper carrier 33 linked thereto transmits the reduced speed to the washing shaft 21 coupled to the center thereof.

The washing shaft 21 performs washing by forming a stream of water in the washing water while inverting the stirring member 7 coupled to the upper side.

On the other hand, after the washing is completed, drainage of the washing water is made and several rinsing is performed, and the dehydration stroke starts.

When the dehydration stroke is started, when the drain motor (not shown) pulls the link member 137, the clutch lever 132 interlocked with it rotates clockwise about the shaft member 131 as shown in FIG. The cam gear 133 meshed with the gear 132a of the clutch lever 132 rotates counterclockwise, and the guide protrusion 135a of the clutch guide 135 inserted into the guide groove 133b is rotated. While lowering along the inclined slit groove 134a of the cam 134 and at the same time the elastic member 136 is installed in the U-shaped groove 113 of the upper clutch 110 as the lower projection of the upper clutch 110 115 and the groove 121 of the lower clutch 120 is engaged to rotate integrally.

As the upper clutch 100 rotates, the upper connector 34 engaged with the protrusion groove 111 of the inner circumferential surface rotates, and the dehydration shaft 22 inserted into the upper inner circumferential surface of the upper connector 34 rotates. And, the dehydration tank (6) interlocked with the dehydration shaft 22 is to dehydrate the laundry therein while rotating at high speed.

(Second embodiment)

A second embodiment of the present invention will be described in detail with reference to FIG. 11.

For reference, the same components and the same reference numerals are assigned to the same components as those in the first embodiment of the present invention and the detailed description thereof will be omitted.

As illustrated in FIG. 11, in the power control unit 130, a plurality of guide protrusions 135a are horizontally installed on the outer circumferential surface of the clutch guide 135 at the same height that is symmetrical with each other at intervals of 180 °. The second guide protrusion 135b is horizontally disposed at the same height symmetrically with respect to the plurality of guide protrusions 135a and 90 ° with respect to the outer circumferential surface thereof. The locking protrusions 135c are respectively protruded from the upper side of the two second guide protrusions 135b to prevent the clutch guide 135 from being assembled upside down.

In the circumference of the cam 134, the inclined slit grooves 134a are formed symmetrically with each other at intervals of 180 ° so that the guide protrusions 135a of the clutch guide 135 are inserted and guided. The inclined slit grooves 134b are symmetrically formed so that the second guide protrusion 135b of the clutch guide 135 is inserted and guided at positions where the inclined slit grooves 134a are respectively spaced 90 degrees apart.

Teeth 133a are formed at the lower end of the outer circumferential surface of the cam gear 133 so as to be tooth-aligned with the gear 132a of the clutch lever 132 so as to be interlocked with the rotation of the clutch lever 132. The inner circumferential surface and the lower surface thereof are opened so that the guide groove 133b of the lower portion is symmetrically formed at intervals of 180 ° so that the guide protrusion 135a of the clutch guide 135 slides up and down is formed. The second guide groove 133c is formed at the positions maintaining the guide grooves 133b and 90 ° apart from each other so as to be symmetrical with each other so that the second guide protrusion 135b is inserted and moved. have.

Next, the operation and effect by the second embodiment of the present invention configured as described above will be described.

When the drain motor (not shown) pulls the link member 137 according to the start of the dehydration stroke, the clutch lever 132 linked thereto rotates in a clockwise direction about the shaft member 131, and the clutch lever 132 is rotated. The cam gear 133 meshed with the gear 132a is rotated counterclockwise, and the guide protrusion 135a of the clutch guide 135 inserted into the guide groove 133b and the second guide groove 133c, respectively. ) And the second guide protrusion 135b are lowered along the inclined slit groove 134a and the inclined groove 134b of the cam 134 and at the same time, the elastic member installed in the U-shaped groove 113 of the upper clutch 110. As the 136 is shot, the lower protrusion 115 of the upper clutch 110 and the recess 121 of the lower clutch 120 mesh with each other to rotate integrally.

As the upper clutch 110 rotates, the upper connector 35 engaged with the protrusion groove 111 of the inner circumferential surface rotates, and the dehydration shaft 22 inserted into the upper inner circumferential surface of the upper connector 35 is rotated. Rotation, washing and dehydration tank (6) interlocked with the dehydration shaft 22 is a high-speed rotation to dehydrate the laundry therein.

Here, when the clutch lever 132 is rotated left and right about the shaft member 131, the cam gear 133 is interlocked with both sides of the inner circumferential surface of the cam gear 133. The guide protrusions 135a and the second guide protrusions 135b protruding from both sides of the outer circumferential surface of the clutch guide 135 are formed in the guide grooves 133b and the second guide grooves 133c formed at the two ends of the cam 134. It is guided by the four inclined slit grooves (134a) and the inclined grooves (134b) to move the upper clutch 110 up and down.

At this time, the guide clutch 135a and the second guide protrusion 135b are distributed evenly on the clutch guide 135 acting on the lower surface of the flange portion 112 of the upper clutch 110. By forming a locking protrusion 135c on the upper side of the second guide protrusion 135b, the clutch guide 135 is prevented from being assembled upside down in the production line.

As described above, according to the power switching device of the washing machine according to the first embodiment of the present invention, by installing the power switching means to the outside of the deceleration means to reduce the overall height of the washing machine as well as simplify the structure of the power switching means product Cost savings are effective.

In addition, according to the power switching device of the washing machine according to the second embodiment of the present invention, the force pushing up the upper clutch according to the up and down operation of the clutch guide is not only distributed evenly, there is an effect that the clutch guide is not assembled upside down.

Claims (9)

In the washing machine provided with a power switching means between the power generating means and the deceleration means to disconnect and connect the power transmitted to the laundry shaft, The power switching means, the upper clutch coupled to the inner circumferential surface is coupled to a plurality of teeth protruding perpendicular to the outer circumferential surface of the upper connector to move up and down, A lower clutch installed at a lower side of the upper clutch and having a plurality of planetary gears tooth-fit to an outer circumferential surface of the center thereof; The power switching device of the washing machine, characterized in that the upper clutch is moved up and down by the power control means installed on the outside of the upper and lower clutch to be separated and engaged with the lower clutch. The method of claim 1, The upper clutch is a projection groove formed to rotate integrally by inserting the toothed projection of the upper connector on the inner peripheral surface, A flange portion formed perpendicular to the upper outer circumferential surface thereof; A boss having a groove formed at a lower end of the flange, A lower protrusion formed on the lower surface of the boss part in a plurality; The power switching device of the washing machine, characterized in that the buffer member is inserted into the outer surface of the lower protrusion so as not to generate noise due to its wear. The method of claim 1, The lower clutch, a plurality of grooves that the lower projection of the upper clutch is inserted into the upper surface of the outer circumference, The power switching device of the washing machine, characterized in that the teeth are provided so that a plurality of the planetary gear teeth fit on the outer peripheral surface of the center inserted into the drive shaft. The method of claim 1, The power control means, the clutch lever is coupled to one side of the upper housing via a shaft member and rotated left and right by a link member operated by a drain motor; A cam gear rotatably engaged with a gear of the clutch lever, A cam installed on the inner circumferential surface of the cam gear and fixed to the upper housing; Guide protrusions formed on the inner circumferential surface of the cam 134 and formed on the outer circumferential surface thereof move upwards as the cam gear moves upward in the inclined slit groove of the cam so that the upper clutch is separated from the lower clutch. A clutch guide for applying a force to a lower surface of the flange portion of the upper clutch; The power switching device of the washing machine, characterized in that made of an elastic member that is compressed and elasticized in accordance with the vertical movement of the clutch guide in the groove of the upper clutch to engage the lower clutch while lowering the upper clutch. The method of claim 4, wherein The cam gear has a tooth that is tooth-aligned with a gear of the clutch lever at a lower end of its outer circumferential surface so as to be interlocked with the rotation of the clutch lever, The power switching device of the washing machine, characterized in that the inner peripheral surface and the lower surface is opened on both sides thereof, the guide groove formed to slide the guide protrusion of the clutch guide up and down. The method according to claim 4 or 5, And a second guide groove formed on an inner circumferential surface of the cam gear so as to open at a lower distance from the guide groove so as to guide the clutch guide. The method of claim 4, wherein The clutch guide includes a second guide protrusion protruding horizontally to the other side of the outer circumferential surface thereof, The power switching device of the washing machine, characterized in that it comprises a locking projection protruding from the upper side of the second guide projection so that the clutch guide is not assembled upside down. The method according to claim 4 or 7, Around the cam, the power switching device of the washing machine, characterized in that it comprises an inclined groove formed so that the upper portion is opened at a predetermined distance from the inclined slit groove so that the second guide projection of the clutch guide is inserted. The method according to claim 6 to 8, The guide protrusion, the second guide protrusion, the locking projection, the inclined slit groove, the inclined groove, the second guide groove, the power switching device of the washing machine, characterized in that formed at least two or more.