KR20020075673A - full automation type washing machine - Google Patents

Abstract

PURPOSE: A fully automated washing machine is provided to control the switching of a rotation force transmitting path with respect to a pulsator or a dehydrating tub in a short time precisely while keeping the rotation force stably by a driving part formed of a stator and a rotor. CONSTITUTION: A fully automated washing machine includes a dehydrating tub rotatably mounted in an outer tub, a pulsator mounted in the dehydrating tub to be independently rotatably, a dehydrating shaft(5) rotatably supported in an axial support bearing case(20) for transmitting the rotation force to the dehydrating tub, a washing shaft for transmitting the rotation force to the pulsator, a motor(7) of which robot(7b) rotates in response to the power supply to a stator(7a), and a clutch unit for switching the power transmission path of the motor to the washing shaft or the dehydrating shaft in response to the washing stroke or the dehydrating stroke.

Description

Fully automatic type washing machine

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fully automatic washing machine, and more particularly, to a fully automatic washing machine for washing and rinsing by a pulsator rotating at a low speed, and performing a dehydration tank at a high speed.

In general, a washing machine is a product that removes various contaminants attached to clothes, bedding, etc. by using the emulsification of the detergent and the friction action of the water flow due to the rotation of the washing blade, and the impact of the pulsator on the laundry. By detecting the amount and type of laundry, the washing method is automatically set, and the water level of the washing water is supplied to the appropriate level according to the amount and type of the laundry, and then washing is performed under the control of the microcomputer.

In addition, the driving method of the conventional fully automatic washing machine is a method of rotating the dehydration tank by transmitting the rotational power of the drive motor to the washing shaft through the power transmission belt and pulley to rotate the pulsator or to the dehydration shaft, There is a method in which the washing tank and the dehydration tank are rotated at different speeds during washing and dehydration by speed control of the BLDC motor.

On the other hand, in recent years, while using a BLDC motor, the power transmission path is controlled differently, and when washing, the pulsator rotates at low speed to wash, and when dewatering, a pulsator and a dewatering tank are rotated at a high speed to dehydrate. A structural example of this type is described in Japanese Patent Laid-Open No. 11-347289.

However, in the method described in Japanese Patent Laid-Open No. 11-347289, the operation is unstable because the operation of the engagement clutch mechanism is performed by the solenoid, and there is a problem such that a lot of noise occurs when the driving body is engaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a fully automatic washing machine in which the rotational power can be reliably and reliably changed in a short time when the rotational power is transmitted to the pulsator or the dehydration tank by a drive unit comprising a stator and a rotor. Its purpose is to.

1 is a longitudinal sectional view showing main parts of a clutch mechanism according to the present invention;

2 is a schematic overview of the full automatic washing machine of the present invention

3A and 3B are principal part longitudinal sectional views showing the action of the clutch mechanism according to the present invention;

3A is a state diagram at the time of washing

3B is a state diagram at the time of dehydration

4A to 4B are main plan views illustrating the operation of the slider moving lever.

Figure 4a is a state diagram when the clutch motor off or dewatering

4B is a state diagram at the time of washing

Fig. 5A is a partially expanded view of the movable gear of the slider and the fixed gear of the stationary body.

5B is a state diagram at the time of dehydration

5C is a state diagram at the time of instant restraint

6 is an exploded perspective view of main parts of the clutch mechanism according to the present invention;

Explanation of symbols on the main parts of the drawings

1: Outer tank 2: Dewatering tank

3: pulsator 4: washing shaft

5: dehydration 6: clutch motor

7a: stator 7b: rotor

7: Motor 8: slider housing

800: step 810: fixed cam

820: Hook 9: slider shift lever

900: rim 910: mobile cam

920: arm part 930: long

10: connection link 100: connection rod

100a: jam jaw 101: inclined tip portion

101a: sloped surface 101b: flat surface

12: Slider shift lever return spring

13: Lever return spring 15: Slider

15a: Outer wall portion 15b: Boss portion

150: serration 151: movable gear

152: coupling gear 153: flange portion

16: connector assembly

16a: outer connector 16b: inner connector

160: serration of the inner peripheral surface of the inner connector

161: serration of the inner peripheral surface of the inner connector

17: Connecting rod 20: Shaft support bearing case

22: fixed body 220: bracket

221: fixed gear 23: upper shaft support bearing

24: lower axial support bearing

30: Bracket 40: Return spring

50: lever 500: inclined tip portion

500a: sloped surface 500b: flat surface

In order to achieve the above object, the present invention is a dewatering tank rotatably installed in the outer tank, a pulsator installed in the dewatering tank and rotatable independently of the dewatering tank, and rotatably supported in the shaft support bearing case to rotate in the dewatering tank Dehydration shaft that transmits power, Washing shaft which transmits rotational power to the pulsator, Motor rotating the rotor as it is energized by the stator, Washing shaft or dehydration of the motor power transmission path in response to the washing stroke or dehydration stroke A fully automatic washing machine is provided, including a clutch mechanism switchable with shrinkage.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

1 is a longitudinal cross-sectional view showing a main portion of the clutch mechanism according to the present invention, Figure 2 is a schematic diagram of the overall automatic washing machine according to the present invention, the automatic washing machine of the present invention is rotatably installed in the outer tub (1) of the main body The dehydration tank 2, a pulsator 3 installed in the dehydration tank 2 and rotatable independently of the dehydration tank 2, and rotatably supported by the axial support bearing case 20, are dewatering tank 2. Dehydration shaft (5) for transmitting the rotational power to), the washing shaft (6) for transmitting the rotational power to the pulsator (3), and the motor (7b) is rotated as the rotor (7b) is energized 7) and a clutch mechanism capable of switching the power transmission path of the motor 7 to the washing shaft 6 or the dewatering shaft 5 in response to the washing stroke or the dehydrating stroke.

On the other hand, the clutch mechanism is provided with a clutch motor (6) installed in the lower portion of the outer tub (1) and a fixed gear (221) is provided in the lower portion of the axial support bearing case 20 is formed along the circumferential direction The stag 22 and the stepped portion 800 fixed to the fixing body 22 and having a plurality of fixing cams 810 formed along the circumferential direction are provided on an inner circumferential surface, and in a predetermined area of the outer circumferential surface above the stepped portion 800. A cylindrical slider housing 8 having an incision formed therein, and a rim portion 900 which is seated on the stepped portion 800 of the slider housing 8 and has a plurality of moving cams 910 formed on the lower surface thereof in the circumferential direction. a slider moving lever 9 formed by an arm part 920 extending from the part and the rim part 900 and protruding outward through the cutout of the slider housing 8, and the slider moving lever ( 9) is installed inside the rim 900 so as to lift and lower together Slider 15 (slider) for switching the rotational power transmission path of the motor while moving in the de-shrinkage direction in accordance with the rotational direction of the moving lever, and the slider moving lever (9) when the clutch motor (6) on or off The slider moving lever rotating means for imparting a rotating force to the slider moving lever 9 so as to rotate in the forward or reverse direction, and the connector assembly 16 interposed so that the rotational force of the rotor 7b is transmitted to the washing shaft 6. It is configured to include.

At this time, a plurality of hooks 820 for fixing the slider housing 8 to the fixing body 22 are formed on the outer wall of the upper side of the step portion 800 of the slider housing 8, and the hook 820 is formed. The outer wall on both sides of the hook 820 is cut to give elasticity to the hook.

The cutout formed on the outer circumferential surface of the upper side of the step portion 800 of the slider housing 8 is formed on a predetermined area along the circumferential direction at an angle corresponding to the rotation angle α of the slider moving lever 9.

In addition, the upper end of the cylindrical outer wall portion 15a of the slider 15 is provided with a flange portion 153 that spans the rim portion 900 of the slider movement lever 9, and the flange portion 153 has a fixed body ( 22. A movable gear 151 that can be engaged with the fixed gear 22 is formed, and on the inner circumferential surface of the boss portion 15b provided inside the outer wall portion 15a of the slider 15, only the serration of the deshrinkable outer circumferential surface is engaged. A serration 150 is formed to simultaneously engage the serration of the deshrinkable outer circumferential surface and the serration of the connector assembly outer circumferential surface.

In addition, a coupling tooth 152 for coupling with the rotor may be additionally provided at the bottom surface of the cylindrical outer wall portion 15a of the slider 15.

On the other hand, the slider moving lever rotation means, the inclined tip portion 500 is a linear movement when the clutch motor (6) on / off and the inclined surface 500a and the flat surface (500b) extending horizontally from the inclined surface (500a) A lever 50 including a connecting rod, a connecting rod 17 which pulls the lever 50 on the clutch motor 6 toward the clutch motor side, and an inside of the long hole 930 of the slider shift lever 9. It is composed of a connecting rod 100 inserted into the inclined tip portion 101 is formed extending from the top of the connecting rod 100 and the inclined tip portion 101, the inclined surface (500a) and the flat surface (500b) of the lever A connection link 10 provided with an inclined surface 101a and a flat surface 101b to rotate the slider moving lever 9 by relative movement with the lever 50 when the clutch motor 6 is on, and Between the bracket 220 of the lower part of the fixed body 22 and the arm part 920 of the slider lever 9 Results are provided to be configured to include a slider moving lever return spring 12 for returning the off-shi dehydrating the slider moving lever 9 position of the clutch motor 6.

At this time, the connecting rod portion 100 of the connection link 10 is formed in the locking step (100a) to contact the circumference of the long hole 930 so that the connection link is supported without sagging.

On the other hand, between the front end of the lever 50 and the bracket 30 at the bottom of the shaft support bearing case 20, when the clutch motor 6 is turned off, the return lever 12 is returned to the lever 50 together with the slider moving lever return spring 12. A lever return spring 13 for imparting force is provided.

In addition, the connector assembly 16 is integrally injection molded into the outer connector 16a, which is a resin material that is bolted to the rotor 7b, and the outer connector 16a, and the lower end of the washing shaft 6 on the inner circumferential surface thereof. The inner connector is formed of a metal material having a serration 161 that is engaged with the serration of the serration and a serration 160 for coupling with the slider 15 on the outer circumferential surface of the upper end exposed to the outer connector 16a. 16b).

At this time, the inner connector 16b is made of an aluminum alloy sintered body to improve strength.

On the other hand, on the space between the outer wall portion 15a and the boss portion 15b of the slider 15, a return spring 40 for pushing the slider 15 downward when the clutch motor 6 is turned off is provided. It is provided.

At this time, the return spring 40 is preferably a conical coil spring is installed, of course, a cylindrical coil spring may be installed.

Reference numeral 23 is an upper side shaft support bearing, and 24 is a lower side shaft support bearing.

The operation of the clutch mechanism of the present invention configured as described above is as follows.

The clutch mechanism according to the present invention is in an off state in which power is not applied to the clutch motor 6 before washing is started, thereby maintaining a state as shown in FIGS. 3B and 4A.

That is, at this time, the inclined surface 101a and the flat surface 101b provided in the inclined tip portion 101 of the connecting link 10 connected to the slider moving lever 9 are provided in the inclined tip portion 500 of the lever 50. In contact with the inclined surface 500a and the flat surface 500b, the slider 15 is located at the bottom dead center.

In addition, the moving cam 910 of the slider moving lever 9 is maintained on the stepped portion 800 provided on the inner circumferential surface of the slider housing 8 without climbing on the upper surface of the fixed cam 810.

In this state, when power is applied to the clutch motor 6 and the clutch motor 6 is turned on, the connecting rod 17 moves to the clutch motor side by the driving force of the clutch motor 6. Accordingly, the lever 50 is pulled toward the clutch motor 6 side.

At this time, the lever return spring 13 provided between the lever 50 and the bracket 30 is tensioned (see FIGS. 4A and 4B).

On the other hand, as the lever 50 is pulled toward the clutch motor 6 side, the connecting link 10 in which the inclined surface 101a of the inclined tip portion 101 is in contact with the inclined surface 500a of the lever 50 is moved. Pressed by the inclined surface 500a of the lever 50 to rotate counterclockwise in the drawing (see FIG. 4B), and the flat surface 101b of the connecting link 10 at the time when the movement of the lever 50 is completed. The inclined surface 500b of the lever 50 comes into contact with each other.

As such, when the connecting link 10 rotates according to the linear movement of the lever 50, the slider moving lever return spring 12 connecting the bracket 220 and the slider moving lever 9 provided on the fixed body 22 is connected. ) Is also tensioned.

On the other hand, when the connecting link 10 is rotated as described above, the slider moving lever 9 coupled to the lower end of the connecting link 10 also rotates counterclockwise in the drawing as shown in FIG. 4B together with the connecting link 10. At this time, the moving cam 910 of the slider moving lever 9 is raised on the inclined surface of the fixed cam 810, and thus the flange portion of the slider moving lever 9 on the rim 900 of the slider moving lever 9. The slider 15 over which the 153 extends is raised while rotating together with the slider moving lever 9.

That is, as the slider moving lever 9 rotates counterclockwise in the drawing, the moving cam 910 is raised along the inclined surface of the fixed cam 810 provided in the slider housing 8, and the moving cam 910 When the rise of) is completed, as shown in FIG. 3A, the slider moving lever 9 is positioned at the top dead center.

On the other hand, the movable gear 151 formed on the upper end of the slider 15 is thereby matched to the fixed gear 221 provided in the fixed body 22 fixed on the lower surface of the shaft support bearing case 20. See FIG. 5A)

In this way, in the state where the movable gear 151 of the slider 15 is engaged with the fixed gear 221 of the fixed body 22, the slider is out of the connector assembly 16, so that the washing shaft (when rotating the rotor 7b) ( 6) Only turns.

That is, during washing, the slider 15 is in a state in which the serration 150 formed on the inner circumferential surface is engaged only with the serration of the outer circumferential surface of the dehydration shaft 5, and the serration of the upper end of the inner connector 16b engaged with the washing shaft 6. Since it is not engaged with the 160, the rotational power of the rotor 7b is transmitted only to the pulsator 3 through the washing shaft 6.

Hereinafter, the operation of the clutch mechanism during dehydration will be described.

While the washing is in progress as shown in FIG. 3A, the power applied to the clutch motor 6 is turned off during the dehydration process after the washing is completed.

As such, when the clutch motor 6 is turned off, the slider shift lever 9 is rotated in the opposite direction to the above-described switchover mode by the restoring force of the slider shift lever return spring 12. Accordingly, the moving cam 910 of the slider moving lever 9 descends on the inclined surface of the fixed cam 810.

On the other hand, when the slider movement lever 9 is rotated by the restoring force of the slider movement lever return spring 12, the connecting link 10 coupled to the slider movement lever 9 is also raised while rotating.

At this time, the flat surface 101b formed on the inclined tip portion 101 of the connecting link 10 pushes the inclined surface 500a of the lever 50, and at the same time, the lever 50 has a lever return spring 13 The restoring force of) acts as the lever 50 moves away from the clutch motor 6 side.

On the other hand, as the clutch motor 6 is turned off as described above and the slider moving lever 9 is rotated, when the moving cam 910 of the slider moving lever 9 descends on the inclined surface of the fixed cam 810, the The slider 15 is lowered by the self-weight and the pushing force of the return spring 40, whereby the movable gear 151 of the slider 15 and the fixed gear 221 of the fixed body 22 are separated. (See Figure 5b)

When the slider 15 is completely lowered, the serration 150 of the inner circumferential surface of the slider 15 is the serration 160 and the dehydration shaft 5 on the outer circumferential surface of the upper end of the inner connector 16b coupled to the washing shaft 6. ) Is simultaneously engaged with the serration of the lower end, and accordingly, the high speed rotation of the washing shaft 6 and the dewatering shaft 5 is performed during the high speed rotation of the rotor 7b to proceed with dehydration.

On the other hand, when entering into the washing state in the clutch motor 6 off state, when the position of the movable gear 151 of the slider 15 relative to the fixed gear 221 of the fixed body 22 is not in the same state as in Figure 5c A state in which the slider 15 is fastened may occur.

That is, since the fixed body 22 is fixed on the axial support bearing case 20, the position of the fixed tooth 221 is constant, but the slider 15 is rotatable with the dehydration shaft 5, so that the fixed body 22 is The position of the movable gear 151 is variable.

Accordingly, when switching to the washing state, the peak portion of the movable tooth 151 of the slider 15 and the peak portion of the fixed tooth 221 of the fixed body 22 may come into contact with each other. Is referred to as the instantaneous restraint state for the slider 15.

At this time, since the slider 15 is slightly engaged with the serration 160 on the outer circumferential surface of the upper end of the inner connector 16b, the slider 15 is rotated, and the movable gear 151 of the slider 15 is rotated as the peaks and valleys of each gear meet. ) And the fixed gear 221 of the fixed body 22 are naturally engaged to release the momentary restraint state for the slider 15.

Instead of the serration formed on the lower end of the washing shaft 4, the lower end of the washing shaft forms a square shaft shape, and the inner connector 16b forms a hollow square ring shape to match the hollow shaft to be axially coupled. You may.

On the other hand, the clutch motor 6 may be installed in the shaft support bearing case 20, and may be configured to interlock with this when the drain valve is driven without installing a separate clutch motor as described above.

Therefore, the means for rotating the slider moving lever 9 is not limited to the form shown in the above-described embodiment, and of course, modifications and variations to other various forms are possible.

The present invention has the effect that the rotational power transmitted to the washing shaft or dewatering shaft is stably controlled in a short time when the rotational power is transmitted to the pulsator or dewatering tank by the drive unit of the stator and the rotor.

Claims (10)

A dewatering tank rotatably installed in the outer tank, A pulsator installed in the dewatering tank and rotatable independently of the dewatering tank, A dehydration shaft which is rotatably supported by the shaft support bearing case and transmits rotational power to the dehydration tank; A washing shaft that transmits rotational power to the pulsator, A motor in which the rotor rotates as the stator is energized, And a clutch mechanism capable of switching the power transmission path of the motor to the wash shaft or the dewater shaft in response to the washing stroke or the dehydrating stroke. The method of claim 1, The clutch mechanism, Clutch motor is installed in the lower part of the outer tank, A fixed body provided at a lower portion of the axial support bearing case and having a fixed tooth formed along a circumferential direction; A cylindrical slider housing which is fixed to the fixing body and has a stepped portion formed on the inner circumferential surface along a circumferential direction, and a cutout is formed in a predetermined area on the outer circumferential surface above the stepped portion; A slider which is seated on the stepped portion of the slider housing and includes a rim part having a plurality of movable cams formed in a circumferential direction on the lower surface thereof, and an arm part extending from the rim part and protruding outward through the cutout of the slider housing. With a moving lever, A slider installed inside the rim to move up and down together when the slider moving lever moves up and down along the dehydration direction according to the rotational direction of the moving lever to switch the rotational power transmission path of the motor; Slider moving lever rotating means for applying a turning force to the slider moving lever so that the slider moving lever rotates in the forward or reverse direction when the clutch motor is turned on or off; Fully automatic washing machine comprising a connector assembly interposed so that the rotational force of the rotor is transmitted to the washing shaft. The method of claim 2, And a plurality of hooks are formed on an outer wall of the upper end of the stepped portion of the slider housing to fix the slider housing to the fixed body. The method of claim 2, The slider is composed of a cylindrical outer wall portion and a boss portion therein, The upper end of the cylindrical outer wall portion is provided with a flange portion that spans the rim of the slider movement lever, the flange portion is formed with a movable tooth that can be fitted to the fixed tooth of the fixed body, the inner peripheral surface of the boss portion provided inside the outer wall portion of the slider And a serration formed on the upper surface to be engaged only with the serration of the deshrinkable outer circumferential surface or with the serration of the deshrinkable outer circumferential surface and the serration of the connector assembly outer circumferential surface. The method of claim 4, wherein Fully automatic washing machine, characterized in that the coupling gear for coupling with the rotor is further provided on the lower end of the cylindrical outer wall portion of the slider. The method of claim 2, The connector assembly is an outer connector that is a resin material that is bolted to the rotor, and a serration for coupling with a slider on an outer circumferential surface of the upper part exposed to the outside of the outer connector by being injection molded into the outer connector, coupled to a lower end of a washing shaft. Fully automatic washing machine, characterized in that consisting of the inner connector is formed of a metal material. The method of claim 6, The inner connector is a full automatic washing machine, characterized in that the aluminum alloy sintered body. The method of claim 2, And a return spring for pushing the slider downward when the clutch motor is turned off on the space between the outer wall and the boss of the slider. The method of claim 2, The slider moving lever rotation means, A lever having a linear motion when the clutch motor is on / off and having an inclined surface and a flat surface extending horizontally from the inclined surface; A connecting rod which pulls the lever on the clutch motor toward the clutch motor; The inclined tip portion extending from the upper end of the connecting rod portion and the connecting rod portion inserted into the long hole of the slider moving lever, the inclined tip portion is provided with an inclined surface and a flat surface corresponding to the inclined surface and the flat surface of the lever clutch A connecting link which rotates the slider moving lever by a relative motion with the lever when the motor is on, And a slider moving lever return spring installed to connect between the bracket of the lower part of the fixed body and the arm part of the slider moving lever to return the slider moving lever to the position when the clutch motor is dehydrated when the clutch motor is turned off. . The method of claim 9, And between the lever and the shaft support bearing case, a lever return spring which provides a return force to the lever together with the slider moving lever return spring when the clutch motor is turned off.