KR200165773Y1 - Power transmission device of a washing machine - Google Patents

Abstract

The present invention relates to a power switching device for a washing machine, a washing machine in which a clutch 23, a power unit 31, a reduction gear 41, and a power switching device 51 are sequentially mounted on a single washing shaft 21. In (11), the internal gear (44) is mounted while the fixing member (81) for fixing the internal gear (44) by the operation of the lever (52) of the power switching device (51) is mounted on the side of the internal gear (44). In order to fix the outer circumference of the motor, the height of the entire motor 17 is reduced, as well as the movement direction of the internal gear 44 and the fixing direction of the fixing member 81 are horizontal so that the durability of components such as the fixing member 81 is improved. It is.

Description

Power change device for washing machine

The present invention relates to a washing machine, and more particularly, to a power switching device for a washing machine for switching the power of washing and dehydration.

In general, the washing machine is applied to the clothes contained in the washing and dehydration tank to wash the clothes, the laundry is dewatered by the water discharged to the outside by the centrifugal force of the clothes rotated at high speed in the washing and dehydration tank Is made

The washing machine is rotatable and has a cylindrical washing-and-dehydrating tank having a plurality of drainage holes, and is formed to surround the washing-and-dehydrating tank on the outside of the washing-and-dehydrating tank, so that the outflow of the washing water discharged from the washing-and-dehydrating tank is discharged. A cylindrical outer tub sealed to be blocked, the stirrer is installed in the lower portion of the washing and dehydration tank to apply a rotational force to the water supplied in the washing and dehydration tank to generate a water flow, and a motor for transmitting the rotational force to the stirrer and washing and dehydration tank.

Here, the motor is conventionally shown in Figs. 6 and 7, the power unit 31 in the axial direction on the washing shaft 21, the stirrer 14 is mounted on the top, the reduction unit 41 and, It consists of a power switching device 151 which is mounted over this power unit 31 and the reduction gear 41.

In addition, the power unit 31 is a motor 32, the rotation of the rotor with respect to the stator according to the energization of the current, and the washing shaft 21 formed in the rod shape while being engaged to the rotor of the motor 32 It consists of a cylindrical tubular motor shaft 33 in close contact with and bonded to the outer peripheral portion of the metal bearing.

In addition, the reduction device 41 is rotated to the outer periphery of the sun gear 42 while being engaged with the sun gear 42 and the sun gear 42 attached to the lower end of the motor shaft 33 and each axis is fixed The carrier consists of a plurality of planetary gears 43 fastened to the lower end of the washing shaft 21, and gears formed on the outer circumference of the planetary gear 43 and internal gears 44 inscribed therein.

On the other hand, the power switching device 151 is a cam lever 62 for moving and controlling the clutch 23 installed so that the motor shaft 33 and the dehydration shaft 22 is intermittent, and the internal contact during washing and dehydration of the washing machine. It consists of a fixing member for controlling the rotation of the gear (44).

The clutch 23 is attached to the outer circumference of the dehydration shaft 22 while being rotated at the same time as the dehydration shaft 22 and is installed to be movable in the longitudinal direction.

Here, the cam lever 62 has a rod shape and one end is fastened to the clutch 23, and the center thereof is fastened to the one end of the housing 24 via the shaft 63, and the clutch 23 is closed. The other end in the opposite direction to the) direction is formed to reach the rotation shaft (53).

In addition, the fixing member is coupled to the lower end of the rotary shaft 53, the gear lever 171 is formed with a plurality of gear teeth at the other end, and a part of the outer peripheral portion formed on one side of the gear lever 171 The formed gear is engaged with the gear to form a ring shape so as to be seated on the upper end of the guide ring 172 positioned at the upper portion of the internal gear 44 and the inner circumference of the guide ring 172 and seated on the internal gear 44. It consists of a fixing ring (173).

In addition, the guide ring 172 is formed on the outer peripheral portion in contact with the gear portion of the gear lever 171, a plurality of inner circumference of the protrusions formed to form a protrusion to the outside is formed.

In addition, the fixing ring 173 is formed with a depression in which the protrusion of the guide ring 172 is inserted to form a slit so as to be movable in one direction and inclined in one direction at a plurality of positions corresponding to the protrusion. The fixing protrusion 174 protrudes and is formed to protrude downward to a plurality of lower ends of the fixing ring 173 and to be inserted and seated in the groove of the internal gear 44.

On the other hand, a rod-shaped rotary shaft 53 is attached to the end of the gear lever 171 and the end of the cam lever 62 so as to be rotatable on the side end of the housing 24, the rotation of the shaft 53 The cam 61 having a contact surface inclined at the contact portion of the cam lever 62 is fastened, and a lever 52 which is perpendicular to the center portion of the rotation shaft 53 and has a rod shape extending outward is formed. The end of the lever 52 is inserted into the link 54 which is pressed and moved in accordance with the user's operation.

Therefore, the motor shaft 33 rotates in the forward and reverse directions according to the operation of the motor 32 during washing, and the sun gear 42 mounted on the lower end of the motor shaft 33 in accordance with the rotation of the motor shaft 33. Is rotated, the planetary gear 43 is rotated along the outer circumference of the sun gear 42 in accordance with the rotation of the sun gear (42).

At this time, the internal gear 44 to which the outer circumference of the planetary gear 43 is joined is fixed by the fixing protrusion 174 of the fixing ring 173 so that the planetary gear 43 is formed on the inner circumference of the internal gear 44. The carrier, to which the respective axes of the planetary gears 43 are rotated and moved along the formed gear teeth and rotated and moved along the inner circumference of the internal gear 44, has an internal gear with respect to the rotational speed of the sun gear 42. 44) or the gear of each gear is reduced and rotated according to the number and the number of planetary gears 43, and the washing shaft is fastened to the carrier in accordance with the rotation of the carrier rotated at this reduced speed As the 21 is rotated, the stirrer 14 attached to the tip of the washing shaft 21 is rotated to wash the laundry.

In addition, when the washing machine is dehydrated, the link 54 is moved in one direction, and the lever 52 is rotated in the same direction, and the rotary shaft 53 to which the lever 52 is fastened is rotated according to the rotation of the lever 52. As the rotary shaft 53 rotates, the cam 61 fastened to the upper end of the rotary shaft 53 and the gear lever 171 fastened to the lower end are rotated by a predetermined angle.

Here, the end of the cam lever 62 is rotated upwardly about the shaft 63 while the protrusion of the cam 62 contacts the bottom end of the cam lever 62 as the cam 61 rotates. The end of the cam lever 62 is rotated upward, and conversely, the tip of the cam lever 62 is rotated downward so that the clutch 23 mounted at the tip of the cam lever 62 is moved downward. As the clutch 23 moves downward, the clutch 23 is joined to the motor shaft 33 positioned below the clutch 23 so that the rotational force of the motor side 33 is coupled to the clutch 23 and the clutch 23. The washing and dehydration tank 13, which is transmitted to the dehydration shaft 22 and the tip of the dehydration shaft 22 is mounted, is rotated to dehydrate the laundry.

Meanwhile, the guide ring 172 meshed with the gear of the gear lever 171 is rotated in one direction according to the gear lever 171 rotated according to the rotation of the rotary shaft 53. As the protrusion is inserted and moved to the recess of the fixing ring 173, the fixing ring 173 is moved upward according to the shape of the recess, and the fixing protrusion 174 formed at the lower end of the fixing ring 173 is The restraint force on the internal gear 44 is abolished by discharging to the outside in the groove of the internal gear 44.

Accordingly, the planetary gear 43 in contact with the inner circumference of the internal rotation gear 44 capable of free rotation receives a rotational force to rotate in one direction in accordance with the rotation of the sun gear 42, and the second rotational force is the internal gear 44. ), The internal gear 44 is rotated.

The planetary gear 43 is rotated along the outer circumference of the sun gear 42 by the rotatable internal gear 44, or is fixed at a point to rotate itself.

At this time, the carrier to which each axis of the planetary gear 43 is fastened, of course, can be rotated.

However, as described above, as the fixing member such as the fixing ring 173 or the guide ring 172 for fixing the internal gear 44 is installed on the upper portion of the internal gear 44, the motor including a washing shaft (21) The height of the washing machine is increased to increase the overall height of the washing machine, and the fixing protrusion 174 of the fixing ring 173 approaches and is fixed to the direction of rotation of the internal gear 44 in the vertical direction while the kinetic force of the internal gear 44 is increased. There was a problem that the fixing protrusion 174 is damaged by an impact transmitted to the side of the fixing protrusion 174 and acting in a direction perpendicular to the pressing action direction of the fixing protrusion 174.

Therefore, the object of the present invention was devised to solve the above problems, the fixing member is mounted on the side of the internal gear, the addition of the height according to the fastening of the fixing member is abolished, the fixing force direction and the internal contact of the fixing member It is to provide a power switching device for a washing machine in which the movement directions of the gears are opposite to each other and are horizontal to prevent breakage of the fixing member.

In the present invention for achieving the above object, in the power switching device for a washing machine connected to the power unit and the reduction gear is fastened so that the power of the power unit is connected and short-circuited to the washing shaft by the fixing and driving of the internal gear, The internal gear is fixed and driven by a fixing member to be mounted on the side thereof so that the fixing force is connected and shorted to the outer circumference of the internal gear. The fixing member includes a pivot table mounted to the side housing of the internal gear via an axis. It is characterized in that it comprises a pressurizing table which is pressurized by an eccentric plate so that the rotating table rotates, and fixed protrusions joined and spaced apart from the outer circumference of the internal gear according to the rotating of the rotating table.

1 is a partial cross-sectional view of a washing machine according to the present invention,

2 to 4 is a cross-sectional view of the motor portion according to the present invention,

3 to 5 is a plan view of a fixing member portion according to the present invention,

6 to 7 are cross-sectional views of a conventional washing machine motor.

* Explanation of symbols for main parts of the drawings

11: washing machine 12: outer tank

13: washing and dehydration tank 14: stirrer

15: water supply means 16: drainage means

17: motor 21: washing shaft

22: dewatering 23: clutch

24 housing 31 power unit

32: motor 33: motor shaft

41: reduction gear 42: sun gear

43: planetary gear 44: internal gear

45: groove 51: power switch

52: lever 53: axis of rotation

54: Link 61: Cam

62: cam lever 63: axis

71: eccentric plate 72: axis

81: fixing member 82: pressing table

83: rotating table 84: fixed protrusion

85: spring

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows a washing machine according to the present invention, Figures 2 to 4 show a motor according to the present invention, Figures 3 to 5 show a fixing member according to the present invention, showing a conventional shape 6 to 7, the same reference numerals will be used to designate the same parts, and detailed description thereof will be omitted.

The present invention, while the upper portion is opened to accommodate the laundry, the inside of the cylindrical washing and dehydration tank 13 of the hollow, and the outside of the washing and dehydration tank 13 while being sealed to prevent external leakage of washing water, etc. The outer tub 12, the stirrer 14 installed at the lower end of the washing and dehydrating tank 13 to form a water flow in the water supplied thereto, and the water supply means 15 through which the washing water is supplied into the washing and dehydrating tank 13. , A drainage means 16 through which the water washed in the washing-and-dehydrating tank 13 is discharged, and a power generator 17 for transmitting power to the stirrer 14 and the washing-and-dehydrating tank 13. A power switching device 51 is installed in the motor 17 of the washing machine 11 to switch between washing power and dehydration power.

Here, the motor 17 is a power unit 31 for generating a driving force, a speed reducer 41 for reducing the power of the power unit 31 to a constant rotation speed suitable for washing, and the speed reducer 41 And installed over the power unit 31 consists of a power switching unit 51 for switching the power generated by the power unit 31 to the heterogeneous power of washing and dehydration.

In addition, the power unit 31 is coupled to the motor 32, the rotor of the rotor rotates with respect to the stator in accordance with the current of the current, and the metal bearing on the outer circumference of the washing shaft 21 is mediated It consists of a circular tubular motor side 33 joined together.

In addition, the reduction device 41 is fastened to the lower end of the motor shaft 33 and rotated in accordance with the rotation of the motor 32 and the outer gear of the sun gear 42 while being in contact with the Rotation of the planetary gear 43 while forming a ring shape such that a plurality of planetary gears 43 rotated according to the rotation of the sun gear 42 and the gear teeth formed on the outer circumference of each planetary gear 43 and the inner circumference thereof are in contact with each other. It consists of an internal gear 44 that rotates according to.

Meanwhile, the power switching device 51 vertically moves the clutch 23 mounted to move in the longitudinal direction of the dehydration shaft 22 on the outer circumference of the dehydration side 22 fastened to the bottom of the washing and dehydration tank 13. A cam lever 62 for moving and a fixing member 81 for fixing and controlling the rotation of the internal gear 44.

In addition, the cam lever 62 has a housing, one side of which is attached to the outer circumference of the clutch 23, and a central point of the cam lever 62 surrounds the outer portions of the power unit 31 and the clutch 23 via the shaft 63. It is fastened to one end of the 24, and the opposite end of the one end attached to the clutch 23 is in contact with the upper cam 61 of the rotation shaft (53).

In addition, the fixing member 81 is a rod-shaped pivoting table 83 mounted on the lower end of the housing 24 via a shaft 72, and the housing 24 at the end of the pivoting table 83. It is formed extending in the opposite direction of the pressing table 82 is pressed by the eccentric plate 71 fastened to the lower end of the rotary shaft 53, is formed extending in the vertical direction from the tip of the pivot 83 is inscribed The fixing protrusion 84 inserted into the groove 45 formed in the outer circumference of the gear 44, and one side is mounted to the center portion of the pivot table 83, the other side is mounted to the housing 24, the pivot table 83 ) Is made of a spring 85 having elasticity to be in close contact with the internal gear 44.

In addition, the cam 61 in contact with the end of the cam lever 62 and the eccentric plate 71 in contact with the pressing member 82 of the fixing member 81 form a rod shape and have a side surface of the housing 24. It is fastened to both front ends of the rotary shaft 53 mounted in the longitudinal direction, and vertically at the central portion of the rotary shaft 53 extends outward to form a lever 52, the outer end of the lever 52 is used for operation It is inserted into the link 54 which moves along a predetermined direction.

Here, the cam 61 is formed so that one side of the upper surface is inclined, the eccentric plate 71 is fastened to the rotation shaft 53 is biased to one side is formed with a different radius on both sides around the rotation shaft 53. .

Next, the operation and effects of the present invention configured as described above will be described.

In the washing operation of the washing machine 11, as shown in Figs. 2 and 3, the link 54 is fixed to the initial position so that the lever 52, the cam 61, and the eccentric plate 71 are in the initial position. Is fixed to the first position of the cam 61, that is, the lower end of the cam 61 is in contact with the end of the cam lever 62, the clutch 23 is mounted on the tip of the cam lever 62 is the motor shaft The power joint of the dehydration shaft 22 and the motor shaft 33 mounted on the inner circumference of the clutch 23 is blocked while being spaced a predetermined distance from the upper end of the 33 and the power to the washing and dewatering tank 13 is braked. .

In addition, the pressing table 82 is brought into contact with the eccentric plate 71 at an initial position, that is, an outer circumferential position having a short radius with the rotation shaft 53, and the elasticity of the spring 85 attached to the pivoting table 83 While the pivoting table 83 is in close contact with the internal gear 44, the pressing table 82 is in close contact with the eccentric plate 71, while the fixing protrusion 84 formed at the tip of the pivoting table 83 is spring. The internal gear 44 is fixed by being inserted into the groove 45 formed on the outer circumference of the internal gear 44 while being pressed in the direction of the internal gear 44 by the elasticity of the 85.

Accordingly, the rotational force of the motor 32 generated by the energization of the electric current is transmitted to the motor shaft 33, and the sun gear 42 is rotated in accordance with the rotation of the motor shaft 33. In accordance with the rotation, the planetary gear 43 in contact with the outer circumference of the sun gear 42 is rotated.

At this time, the internal gear 44 in contact with the outer circumference of each planetary gear 43 is fixed by the fixing member 81 so that the planetary gear 43 is rotated along the gear teeth formed on the inner circumference of the internal gear 44. As the respective planetary gears 43 rotate, the carrier to which the shaft of the planetary gear 43 is fastened is rotated.

At this time, the carrier is the rotational speed of the sun gear 42 is transmitted to each planetary gear 43, the rotational speed is reduced by the number of planetary gears 43, etc. washing shaft 21 is fastened to the carrier is required The water in the washing-and-dehydrating tank 13 is washed while making the water flow while decelerating and rotating at a rotational speed, and the stirrer 14 fastened to the tip of the washing shaft 21 rotates.

In addition, when the washing machine 11 is dewatered, as shown in FIGS. 4 and 5, the link 54 is moved in one direction, and the lever 52 inserted into the link 54 is fixed to the housing 24. The rotating shaft 53 is rotated about the center, and according to the rotation of the rotary shaft 53, the cam 61 fastened to the upper end and the eccentric plate 71 fastened to the lower end are rotated by a predetermined angle.

Here, as the cam 61 is rotated by an angle, the end of the cam lever 62 is in contact with the most protruding portion of the surface of the cam 61 so that the tip of the cam lever 62 is downwardly centered on the shaft 63. Rotated, the front end of the cam lever 62 is rotated downward, the clutch 23 is moved downward along the outer circumference of the dewatering shaft 22, the lower end of the clutch 23 is moved downward It is joined to the upper end of the motor shaft 33 and is rotated at the same time as the rotation of the motor shaft 33 so that the rotational force of the motor 32 is transmitted to the dehydration shaft 22 and the washing and dehydration tank 13, the washing and dehydration tank As the 13 is rotated, the laundry is dewatered.

In addition, the eccentric plate 71 is rotated by a predetermined angle in accordance with the rotation of the rotary shaft 53, the portion making up the longest radius with respect to the shaft is in contact with the pressing table 82 of the fixing member 81, the eccentric plate 71 The pressure table 82 in contact with the longest radius of the () is moved to a predetermined width, a certain pressure is applied to the end of the rotating table 83, and the pressure of the rotating table 83 while suppressing the elasticity of the spring (85) in accordance with this pressure ) Is moved to the outside of the housing 24, the fixing protrusion 84 formed at the tip of the rotating table 83 is separated in the groove 45 of the internal gear 44 in accordance with the movement of the rotating table 83. The internal gear 44 is freed.

Therefore, the sun gear 42 provided inside the internal gear 44 in which the rotation is freed rotates in accordance with the rotation of the motor shaft 33, and the sun gear 42 of the sun gear 42 rotates according to the rotation of the sun gear 42. The planetary gear 43 in contact with the outer circumference is rotated, and the internal gear 44 in contact with the outer circumference of each of the planetary gears 43 to be rotated is rotated, and the planetary gear 43 is the sun gear 42. Along with the outer circumference of the internal gear 44 is rotated at the same time, of course, can be self-rotating on each axis fastened to the carrier.

As described above, according to the present invention, the fixing member for fixing the internal gear is mounted on the side of the internal gear so that the height of the entire motor is reduced and the washing machine is downsized, and the fixing force of the fixing member is horizontal to the rotation direction of the internal gear. This occurs, as well as making a solid fixing, the lateral impact of the internal gear against the fixing member is abolished, thereby improving the durability of the parts.

Claims (3)

In a power switching device for a washing machine connected to a power unit and a reduction gear, the power of the power unit being fastened to a washing shaft by fixing and driving the internal gear, wherein the internal gear is mounted on a side thereof and is an internal gear. It is fixed and driven by a fixing member so that the fixing force is connected and short-circuited at the outer circumference thereof, and the fixing member includes a pivot table mounted on the side housing of the internal gear via an axis, and pressure is applied by an eccentric plate to pivot the pivot table. A power switching device for a washing machine, comprising a pressurizing table to be applied and fixed protrusions joined to and spaced from an outer circumference of the internal gear according to the rotation of the rotating table. The eccentric plate of claim 1, wherein the eccentric plate is rotated about a rotation axis to form a distance of one outer circumference around the axis longer than a distance of the other outer circumference so as to intermittently transmit pressure to the pressing table according to the rotation of the one outer circumference. Power switch for washing machine characterized in that it has been. The power switching device for a washing machine according to claim 1, wherein a groove recessed inward is formed in an outer circumference of the internal gear so that the fixing protrusion is inserted and fixed.