JPH03191992A - Clutch mechanism for full automatic washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention uses a belt-shaped brake band as a brake mechanism, and clutch switching is performed by a clutch spring wrapped around the outer periphery of a dehydration shaft and a boolean boss. The present invention relates to a clutch mechanism for a fully automatic washing machine having a clutch interlocked with the mechanism.

2. Description of the Related Art A conventional clutch mechanism for a fully automatic washing machine of this type is as shown in, for example, Japanese Patent Publication No. 59-46638.

That is, as shown in FIG. 7, a clutch gear 13 that locks the lower end of a clutch spring 12 wound around the P end of the dewatering shaft 6 and the pulley post 11 to which the driven boob 9-9 is fixed; Tax-saving claw piece 1 that can be attached to
A hollow dewatering shaft 6 and a pulsator (not shown) coaxially supported within the dehydrating shaft 6 are provided.
Kaiden wash i! Switches power transmission to +1ll16.

Specifically, when the claw piece 14 is disengaged from the blade of the clutch gear 13 by operating the clutch lever 16, the clutch spring 12 is moved between the pulley post 11 and the dewatering shaft 6
The tightening of the clutch spring 12 makes it possible to transmit rotational force in the direction. When the claw piece 14 is engaged with the clutch gear 13, the lower part of the clutch spring 12 loses its tightening force on the pulley post 11, and the rotation of the pulley post 11 is dehydrated! ! Not transmitted to 115,
Since the pulley post 11 is fixed to the lower end of the washing 111 shaft 6, it rotates a pulsator (not shown), thereby performing a washing action.

Furthermore, the braking device for the dehydrating laundry 4 (not shown) has the following configuration.

Brake wheel 1 fixed to dehydration tank 6 inside bearing tank 7
7 and brake band 1 on the outer circumference of this brake wheel 17
This is done by rotating the operating plate 23 via a small pin 21 loosely attached to the end of the operating plate 9. The operation plate 23 is rotatably supported by a brake actuation pin 24, and the illustrated operation is performed by being pressed by a brake lever 18 that is integrally fixed to the clutch lever 16. The brake lever 18 and the clutch lever 15 are rotatably supported by a brake lever pin 20, and biased in a predetermined direction by a coil spring 18a wound around the brake lever pin 20. ing.

Problems to be Solved by the Invention However, with such a structure, when dewatering is performed, that is, the clutch spring 12 is connected to the pulley boss 11.
and the lower end of the dehydration tank 6, and the clutch spring 1
The tightening in step 2 will cause the dehydration washing tub to rotate in the direction, and if the rotation of this dehydration washing tub is braked, the
At the same time as is pressed by the brake wheel 17, the claw piece 14 fixed to the clutch lever 16 is engaged with the blade of the clutch gear 13, and the part of the clutch spring 12 that is connected to the dewatering shaft 6 is Tightening acts in the direction, and the tightening force is accumulated in the direction where the part connected to the pulley post 11 disappears.

In other words, when the claw piece 14 is disengaged from the blade of the clutch gear 13 by operating the clutch lever 16 in this state, the force accumulated in the clutch spring 12 becomes the restoring force of the clutch spring 12, and the clutch spring 12 is quickly returned to its natural position. Return,
At this time, there was a problem in that vibrations were generated as the restoring force was released, and the vibrations became 11 tones. In order to solve this problem, with this structure, the clutch lever had to be operated only after the rotation of the water spindle had completely stopped.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a clutch mechanism for a fully automatic washing machine that prevents the clutch spring from accumulating restoring force and prevents scratching noise no matter what state the rotation of the dehydrating washing tub is braked. With the goal.

Means for Solving the Problem In order to achieve this object, the clutch mechanism of the fully automatic washing machine of the present invention incorporates a resistance vane or the like in a housing having a fluid chamber containing oil or the like that provides resistance to the clutch lever. It is attached to a shaft equipped with a resistance piece.

Function: With this configuration, the clutch spring is tightened when an action is taken to brake the spinning washing tub.
The brake band is pressed against the brake wheel, and the spinning washing tub comes to a standstill.

In other words, after the dehydration shaft has completely stopped, the clutch lever
By operating, the pawl piece is engaged with the blade of the clutch gear without accumulating restoring force in the clutch spring, and even if the clutch lever is operated again and the pawl piece engages and disengages, vibration is not generated. It is possible to prevent the noise caused by

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view of the structure of a clutch mechanism of a self-loading washing machine according to an embodiment of the present invention. Note that the same components as in the conventional example are given the same reference numerals. As shown in the figure, a dehydration washer 14112 is disposed in the water receiving tank 1 so as to be rotatable for dehydration.

A pulsator 3 is provided at the center of the bottom of the dehydration washing tub 2 so as to be rotatable left and right.

The dehydrating washing tub 2 has seven lunges 4 fixedly installed on the outer bottom and is further fitted onto a hollow dehydrating shaft 6. A pulsator rotation washer i'i'd+' is coaxially supported within the dewatering shaft 6. The dewatering shaft 6 is a bearing box 7 fixed to the outer bottom of the water receiving tank 1.
It is rotatably supported by a bearing 8 fixed inside. The rotational force of the motor (not shown) is transferred via a V-belt 10 stretched between a driving pulley (not shown) fixed to the shaft end and a driven pulley 9 placed below the bearing box 7. Aquarium 6 or
It is transmitted to the washing shaft 6. The above-mentioned spin-drying rotation and washing rotation are performed as follows.

That is, the clutch spring 12 is wound around the lower end of the dewatering shaft 6 and the pulley post 11 to which the driven pulley 9 is fixed.
, a clutch gear 13 that engages the lower end of the clutch spring 12, and a clutch lever 15 that engages with the clutch gear 13 and has a claw piece 14 that can be engaged and detached.
This is done by the action of A resistance device 16 to which a coil spring 20 is attached is installed on the upper part of the latch lever 15, and urges the claw piece 14 in the direction in which it should be engaged with the clutch gear 13. With the above configuration, dehydration rotation is performed when the clutch lever 16 is disengaged from the blade of the clutch gear 13, and the clutch spring 12 is in close contact with the pulley post 11 and the lower end of the dehydration shaft 5, and the clutch spring 12 is tightened. Rotational force can be transmitted in the attached direction, and dehydration rotation is performed. When the claw piece 14 is engaged with the clutch gear 13 during washing rotation, the force below the clutch spring 12 to tighten the pulley post 11 is lost, and the rotation of the pulley post 11 is not transmitted to the dewatering shaft 5. Therefore, since the pulley post 11 is fixed to the lower end of the washing machine 4dI6, the pulsator 3 is rotated to perform the washing action.

The braking device that fixes the dehydrated laundry N2 during washing and controls it at the end of dehydration includes a brake wheel 17 fixed to the dehydration shaft 6 and a brake band 19 around the outer periphery of the brake wheel 17 in the bearing box 7. Around the brake lever pin 2
The braking force is obtained by operating a pre-ki lever 18 that rotates around the 0'ii axis.

Next, details of the resistance device 16 will be explained with reference to FIG. The resistance device 16 is composed of a rotatable shaft 16d having resistance blades 16b protruding from a housing 16a having an oil chamber 16e, and serves as a rotation center axis of the clutch lever 15. A clutch lever 16 and a coil spring 19 wound around a post 16c are engaged with the rotating shaft 16d, and bias the clutch lever 15 in a predetermined direction. Note that the above configuration is installed in the bearing box 7.

Clutch of fully automatic washing machine configured as above:・1
FIGS. 3 and 4 are diagrams showing the operation of the structure as viewed in the direction of the arrow in section A in FIG. 1.

This will be explained with reference to FIG. FIG. 3 shows a state in which no force is applied to the brake lever 18, which is a state in which washing rotation is performed. In this state, brake lever 1
When a force is applied to the protruding portion 18' of No. 8 using a solenoid, etc.,
It will look like Figure 4. Protrusion 18 of brake lever 18
′, the brake band 19 supported by the brake lever pin 21 is released from the outer periphery of the brake wheel 17 with the brake lever shaft 2o as the center of rotation, the clutch interlocking screw 22 is pressed, and the clutch lever 16
moves in the direction of arrow a with rotation axis 1ed as the center of rotation. Then, the claw piece 14 is disengaged from the clutch gear 13, and the dehydration rotation begins. This dewatering rotation is braked by releasing the force applied to the protrusion 18' of the brake lever 18.

As shown in FIG.
(See Figure 1)
It does not follow immediately, but the state shown in Fig. 3 occurs with a time lag.

Note that the low drag of the resistance device 16 is set to match the time when the dehydration flow reaches Orpm when braking is performed by the brake band 19.

As described above, according to this embodiment, the clutch lever 16 is engaged with the rotating shaft of the resistance device 160, which has resistance blades in a housing having an oil chamber that provides resistance, thereby braking the dewatering rotation. In this case, it is possible to prevent noise reduction without accumulating restoring force in the clutch spring 12.

In the embodiment, the resistance device 16 was engaged approximately at the center of rotation of the clutch lever 16, but as shown in FIG. You may wear it.

Effects of the Invention As is clear from the description of the embodiments in Section F, the present invention provides a clutch lever that is engaged with a resistance device having a shaft provided with resistance vanes in a housing having an oil chamber that provides a resistance force. Therefore, it is possible to realize an excellent clutch mechanism for a fully automatic washing machine that can prevent scratching noise without accumulating restoring force in the clutch spring when the spin-drying rotation is braked.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical cross-sectional view of the clutch mechanism of the all-white washer according to the embodiment of the present invention, FIG. 2 is a detailed cross-sectional view of the resistance device, and FIGS. Fig. 5 is an explanatory diagram of the operation of the clutch lever, and Fig. 6 is a partially broken view of the clutch mechanism for fully automatic washing according to another embodiment of the present invention. 1... Water tank, 2...
...Dehydration washing tub, a...Pulsator, 6.
...Dehydration shaft, 6...Washing shaft, 11...
...Pulley post, 12...Two springs, 13...Clutch gear, 14...
Pawl, 1g...Clutch lever-116...
・Resistance device, 16a...Housing, 16b・
...Pa is the anti-impeller, 16e...oil chamber, 17.
... Brake wheel, 18 ... Brake lever, 19 ... Brake band.

Claims (1)

[Claims] A dehydration washing tub is rotatably arranged in the water receiving tank, a pulsator is arranged at the bottom of the dehydration washing tub so as to be rotatable left and right, and a pulsator is installed in a hollow dehydration shaft that transmits rotation to the dehydration washing tub. A pulley post, which coaxially supports a rotating washing shaft and transmits the rotational force of a motor provided at the bottom of the water receiving tank to the dewatering shaft and the washing shaft, is fixed to the washing shaft, and a clutch spring is wound around the outer periphery. , the engagement/disengagement operation of the pawl piece with respect to the clutch gear having a blade portion engaged with one end of this clutch spring is integrated with the opening operation of the band-shaped brake band with respect to the brake drum fixed to the dehydration shaft, and the closing operation is performed using the band-shaped brake band. A fully automatic washing machine that uses a brake lever to close the band and then uses a clutch lever to engage the pawls, the housing having a liquid chamber for oil or the like that provides resistance to the clutch lever. A clutch mechanism for a fully automatic washing machine in which a resistance device having a shaft with a resistance piece such as a resistance blade installed therein is linked, and a time difference is established between the closing operation of a band-shaped brake band and the closing operation of a clutch lever.