KR20020076902A - full automation type washing machine - Google Patents

Abstract

PURPOSE: A fully automated washing machine is provided to carry out the switch of the rotation force transmission from a driving part formed of a stator and a rotor to a pulsator or a dehydrating tub stably in a short time. CONSTITUTION: A fully automated washing machine includes a dehydration tub rotatably mounted in an outer tub, a pulsator mounted in the dehydration tub and rotatably independently from the dehydration tub, a dehydration shaft(5) rotatably supported in a shaft-supporting bearing case(20) for transmitting rotation force to the dehydration tub, a washing shaft(6) for transmitting the rotation force to the pulsator, a motor(7) having a rotor(7b) rotating as a stator(7a) is energized, and a clutch unit for switching the power transmission path of the motor to the washing shaft or the dehydration shaft in response to the washing or 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, since the operation of the engagement clutch mechanism is performed by the solenoid, the operation is unstable, and there is a high possibility that thermal deformation occurs in the gear by the heat generated from the solenoid. There were many problems such as a lot of noise during the engagement.

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 stably controlled in a short time when the rotational power is transmitted to the pulsator or the dehydration tank by the drive unit of the stator and the 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 according to the present invention

3a to 3c is a longitudinal cross-sectional view showing the operation of the present invention,

3A is a state diagram at the time of washing

3B is a state diagram at the time of dehydration

3C is a state diagram at the time of instant restraint

Fig. 4A is a partially expanded view of the movable gear of the slider and the fixed gear of the stationary body.

4B is a state diagram at the time of dehydration

4C is a state diagram at the time of instant restraint

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: Shock Spring

9: wire 10: bevel tip

12: movable rod 13: torsion spring

14: return spring 15: slider

150: serration 151: movable gear

152: jaw 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

21: fixing pin 210: stopper

22: fixed body 220: support bracket

221: fixed gear 23: upper bearing

24: Lower bearing 30: Wire guide

40: compression spring

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 that transmits rotational power to the pulsator, Motor rotating the rotor as the stator is energized, and the power transmission path of the motor 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 4C.

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 A dehydration tank 2, a pulsator 3 installed in the dehydration tank 2 and rotatable independently of the dehydration tank 2, and a dehydration tank 2 rotatably supported by the axial support bearing case 20. Dehydration shaft (5) for transmitting rotational power to the rotor, washing shaft (6) for transmitting rotational power to the pulsator (3), and the motor (7) in which the rotor (7b) rotates as the stator (7a) is energized. 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, the clutch motor (6) is installed in the lower portion of the outer tub (1), the wire guide 30 is installed through the shaft support bearing case 20, and the clutch motor (6) on On / off of the wire (9) to be moved by the guide of the wire guide 30, the inclined tip 10 is coupled to the end of the wire 9, the inclined surface is formed at the upper end thereof, and the clutch motor (6) on A connecting rod 17 which pulls the wire 9 toward the clutch motor side, a buffer spring 8 installed between the connecting rod 17 and the wire 9, and the shaft support bearing case 20. The fixed body 22 is fixed to the lower portion of the fixed gear 221 formed along the circumferential direction, the fixing pin 21 is fixed on the support bracket 220 of the fixed body 22, and the fixed It is installed so as to rotate around the pin 21 in the clockwise or counterclockwise direction when the inclined tip 10 is elevated. The movable rod 12 which rotates and the movable gear 151 which are matched with or separated from the fixed gear 221 of the said fixed body 22 are provided, and the dehydration shaft 5 according to the rotation direction of the movable rod 12 is provided. It comprises a slider 15 for switching the rotational power transmission path of the motor (7) while lifting in the direction, and a connector assembly (16) interposed so that the rotational force of the rotor (7b) is transmitted to the washing shaft (6). .

At this time, molybdenum coating layers 221a and 151a are formed on the fixed gear 221 of the fixed body 22 and the movable gear 151 of the slider 15 to improve corrosion resistance, heat resistance, and wear resistance.

In particular, molybdenum disulfide (MoS2) is coated on the fixed gear 221 of the fixture 22 and the movable gear 151 of the slider 15 to improve self-lubrication.

On the other hand, the movable gear 151 that can be fitted to the fixed gear 221 of the fixed body 22 is provided at the upper end of the slider 15, and the serration of the dehydration shaft 5 on the inner circumferential surface of the slider 15 and The serration 150 is provided to engage the serration 160 on the outer circumferential surface of the upper end of the inner connector 16b constituting the connector assembly 16.

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, between the upper surface and the lower bearing 24 of the slider 15 is provided with a compression spring 40 for pushing the slider 15 downward when the clutch motor 6 is off.

In addition, on the support bracket 220 of the fixing body 22 to which the fixing pin 21 is coupled, a stopper 210 is formed to limit the lowering position of the slider 15 by limiting the rotation angle of the movable rod 12. When the clutch motor 6 is turned off, the movable rod 12 is provided with a torsion spring 13 to impart rotational force to rotate clockwise about the fixing pin 21.

Reference numeral 23 is an upper 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 starts, thereby maintaining a state as shown in FIGS. 1 and 3B.

That is, at this time, the inclined tip 10 coupled to the wire 9 is located at the bottom dead center, and thus the slider 15 is located at the bottom dead center.

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 wire 9 is pulled toward the clutch motor 6 while being guided by the wire guide 30.

At this time, the shock absorbing spring 8 provided between the connecting rod 17 and the wire 9 is tensioned.

On the other hand, as the wire 9 is pulled toward the clutch motor 6 side, the inclined tip 10 which is in contact with the inclined surface of the movable rod 12 is raised, and at the time when the inclined tip is completed, as shown in FIG. As shown, the inclined tip 10 is located at the top dead center.

As such, when the wire 9 moves and the inclined tip 10 rises, the movable rod 12, which is in surface contact with the inclined tip 10, is installed through the support bracket 220 of the fixing body 22. The pin 21 is rotated counterclockwise in the drawing.

In this way, when the movable rod 12 is rotated counterclockwise in the drawing about the fixing pin 21, the tip of the movable rod 12 pushes the jaw portion 152 of the slider 15 to the slider 15. ) Is pushed along the dehydration shaft 5 in the axial direction.

Accordingly, the movable gear 151 formed at the upper end of the slider 15 is matched to the fixed gear 221 provided in the fixed body 22 fixed on the lower surface of the shaft support bearing case 20. 4a)

In this manner, 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 slide is out of the connector assembly 16, so that the washing shaft when the rotor 7b is rotated ( 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.

On the other hand, when the fixed gear 221 and the movable gear 151 for washing, the molybdenum coating layer (221a) (221) on the fixed gear 221 of the fixed body 22 and the movable gear 151 of the slider 15 Since 151a) is formed, the corrosion resistance, heat resistance, and wear resistance of the gears are improved.

In particular, when molybdenum disulfide (MoS2) is coated on the fixed gear 221 of the fixed body 22 and the movable gear 151 of the slider 15, self-lubrication is performed, thereby reducing noise.

On the other hand, the coating of molybdenum or molybdenum disulfide as described above exhibits corrosion resistance, heat resistance, abrasion resistance improvement and self-lubrication when applied not only to the clutch structure of the present invention but also to a conventional clutch mechanism in which a tooth is operated by a solenoid.

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 movable rod 12 rotates clockwise in the drawing by the restoring force of the torsion spring 13, and the tilting tip 10 moves the movable rod. It descends by the rotational force of (12).

In addition, the connecting rod 7 and the shock absorbing spring 8 moves together in the washing shaft center direction when the wire 9 moves along the lowering of the inclined tip 10.

In this way, when the clockwise rotation of the movable rod 12 and the lowering of the inclined tip 10 occur when the clutch motor 6 is turned off, the tension applied to the shock absorbing spring 11, which is a tension spring, is alleviated.

On the other hand, when the return of the inclined tip 10 is completed, the movable rod 12 during washing is located at the bottom dead center.

Therefore, at this time, as the movable rod 12 rotates clockwise in the drawing about the fixing pin 21, the tip of the movable rod 12 moves the slider 15 along the dehydration shaft 5 in the axial direction. The boosting force is removed.

As the bearing force of the movable rod 12 with respect to the slider 15 is removed in this way, the slider 15 is lowered by the self-weight and the pushing force of the compression spring 40, and thus, the slider 15 The movable gear 151 and the fixed gear 221 of the fixed body 22 are separated (see FIG. 4B).

When the slider 15 is completely lowered, the serration 150 of the inner circumferential surface of the slider 15 is serrated 160 and the dewatering shaft 5 on the outer circumferential surface of the upper end of the inner connector 16b coupled to the washing shaft 6. ) Is engaged with the serration of the lower end at the same time, so that the high-speed rotation of the washing shaft 6 and the dewatering shaft 5 during the high-speed rotation of the rotor (7b) is dehydrated.

On the other hand, when entering into the washing state in the clutch motor 6 off state, the position of the movable gear 151 of the slider 15 relative to the fixed gear 221 of the fixed body 22 does not match the position of Figs. 3C and 4C As shown in FIG. 1, a state in which the slider 15 is instantaneously bound 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 together with the dehydration shaft 5, so that the movable tooth at the stop The position of 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 is naturally engaged by the buffering action of the shock absorbing spring (8) provided between the connecting rod 17 and the wire (9) of the clutch mechanism of the present invention slider 15 The restraint for is released.

On the other hand, instead of the serration is formed in the lower end of the washing shaft (4), the lower end of the washing shaft to form a square shaft shape, the inner connector (16b) inside the shaft to form a hollow square ring shape to match the hollow shaft It may be combined.

According to the present invention, when the rotational power is transmitted to the pulsator or the dehydration tank by the drive unit of the stator and the rotor, the rotational power transmitted to the washing shaft or the dehydration shaft can be reliably and reliably switched in a short time.

Claims (6)

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 for transmitting rotational power to a dehydration tank which is rotatably supported by the axial support bearing case; A washing shaft that transmits rotational power to the pulsator, A motor in which the rotor rotates as the stator is energized, A fully automatic washing machine comprising a clutch mechanism capable of switching a power transmission path of a motor to a washing shaft or a dehydrating shaft by a gear engaged or separated in response to a washing stroke or a dehydrating stroke. The method of claim 1, Fully automatic washing machine, characterized in that the molybdenum coating layer is formed to improve the corrosion resistance, heat resistance, and abrasion resistance in the tooth to be separated or toothed. The method of claim 1, The toothpaste to be separated or separated is a fully automatic washing machine, characterized in that the coating of molybdenum disulfide (MoS2) to increase the self-lubrication. The method of claim 1, The clutch mechanism, Clutch motor is installed in the lower part of the outer tub, a wire guide installed through the shaft support bearing case, a wire moving by the guidance of the wire guide when the clutch motor on / off, coupled to the wire end and the upper end An inclined tip formed on the inclined surface, a connecting rod which pulls the wire on the clutch motor to the clutch motor side, a shock absorbing spring installed between the connecting rod and the wire, and fixed to a lower portion of the axial support bearing case. A fixed body having a fixed gear formed along a direction, a fixed pin fixed on a support bracket of the fixed body, and rotatably installed around the fixed pin, in a clockwise or counterclockwise direction when the inclined tip is elevated; A movable rod that rotates and a movable gear that is matched to or separated from the fixed gear of the fixed body Fully automatic washing machine comprising: a slider for switching the rotational power transmission path of the motor while moving up and down along the dehydration direction according to the rotational direction of the movable rod; and a connector assembly interposed so that the rotational power of the rotor is transmitted to the washing shaft. . The method of claim 4, wherein And a compression spring for pushing the slider downward when the clutch motor is turned off between the upper surface and the lower bearing of the slider. The method of claim 4, wherein On the support bracket of the fixing body to which the fixing pin is coupled, a stopper is formed to limit the lowering position of the slider by limiting the rotation angle of the lever, and when the clutch motor is turned off, the lever rotates clockwise around the fixing pin. Fully automatic washing machine, characterized in that provided with a torsion spring.