JPS59125599A - Dehydration washer - 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 (1) [Technical Field of the Invention] The present invention relates to an improvement of a dehydrating and washing machine equipped with an agitator.

[Technical background of the invention]

Conventionally, in this type of dehydrating/washing machine, an agitator having wings is installed in a rotating tank that also serves as a dehydrating tank and a washing machine.
A brake device comprising a brake drum that rotates and stops together with the rotating tank and a tightening band wrapped around the drum is provided, and during dewatering, the braking by the brake device is released and the rotating tank and the agitator are connected. The agitator is rotated integrally, and the agitator is rotated in forward and reverse directions with the brake device applying braking during washing to stop the rotation 41#. The winding band in the brake device normally rotates together with the brake drum (when the brake is released), and when braking is to be performed, one end of the winding band is locked so as to exert a frictional braking force on the brake drum. Therefore, the tightening band tends to loosen when the brake drum rotates in one direction, and tighten when the brake drum rotates in the other direction.

[Problems with background technology]

By the way, when considering the washing time in the conventional type mentioned above,
Washing water and laundry in the rotating tub flow through the face and inside the tub from the forward rotation direction to the reverse rotation direction, and from the reverse rotation direction to the forward rotation direction, by the blades of the agitator, which rotates forward and backward at relatively low cycles. However, due to this folding, the flow of the laundry and washing water, the rotating tub is subjected to rotational forces in the forward and reverse directions. However, in the above-mentioned conventional system, 1 is because the tightening band of the brake device loosens and tightens when the brake drum rotates in one direction and the other direction, respectively, so that the braking force inevitably becomes weak or strong. , G〉1 When the drum receives a rotational force from the rotating tank in one direction that causes the tightening band to loosen, the brake shoe slightly rotates with respect to the tightening band, and as a result, the rotating tank loosens. When the agitator rotates in the direction of rotation of the laundry and washing water, the relative force between the laundry and the rotating tub decreases, resulting in a lower cleaning effect. Further, since the brake drum moves side by side with respect to the tightening band, there is a problem that the tightening band is severely worn, shortens its service life, and even damages the brake drum.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a dehydrating/washing machine that can fully enhance the cleaning effect and extend the service life of the brake device.

[Summary of the invention]

According to the present invention, the seven sides in the rotational direction of the brake drum that allow the tightening band to be loosened in the wing portion of the agitator are formed into a cedar slope that is more gentle than the side in the opposite rotational direction. However, it is characterized in that the rotational force exerted on the brake drum from the agitator through the laundry etc. is reduced in the direction of rotation in which the brake drum loosens the heald band. .

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

First, in FIG. 1, reference numeral 1 denotes an outer box, inside of which a water receiving tank 3 is elastically suspended via an elastic suspension mechanism 2, and a motor 42 and a mechanical part 5 are attached to the outer bottom of the water receiving tank 3. A belt transmission mechanism 6 and the like are provided. Further, a rotating tank 7 serving as a washing tub and a dehydrating tank is disposed inside the water receiving tank 3, and an agitator 8 is disposed at the bottom of the rotating tub 7. The rotating tank 7 is connected to a rotating shaft 9 of the mechanism section 5, and the agitator 8 is connected to a stirring shaft (not shown) in the mechanism section 5 via a deceleration mechanism 10 disposed at the inner bottom of the rotating tank 7. There is. The mechanism section 5 has a clutch mechanism 11 and a brake device 12, and the clutch mechanism 11 has a carp A/
On the other hand, as shown in FIGS. 2 and 3, the brake device 12 is a brake drum that is attached to the rotating fI 1119 and rotates and stops together with it. 13 and this brake drum 1
6 and a brake shoe 14a is attached to the inner circumferential surface thereof. The supported brake lever 15, the spring 16 provided to urge the brake lever 15 in the direction of locking the locked portion 14'b, and the brake lever against the spring force of the spring 16. Electromagnet 17 that extends 15 in the opposite direction
has been established. The clutch mechanism 11 transmits the rotational power of the motor 4 to the stirring shaft and rotating shaft 9 during dewatering, and transmits it only to the stirring shaft during washing. The electromagnet 17 moves the brake lever 15 to the unlocked position 1 with respect to the tightening band 14 as shown by the dashed line in the second drawing. When washing the brake drum 13, the brake lever 15 is brought to the locking position by the spring 16 as shown by the solid line in FIG.
The braking force (sealing force) of the seaming band 14 is applied to the winding band 14, so that the braking force by the brake device 12 is released during dewatering and the rotation 4117 and the agitator 8 are rotated together, and the braking force is applied to the seaming band 14 during washing. 12 to cause the agitator 8 to rotate fully. In this case, the agitator 8 is set to rotate forward and backward repeatedly, for example, it is rotated three times in the forward direction, then reversed, and then rotated again six times in the opposite direction.

Here, in the brake device 12, as shown in FIGS.
If we consider a state in which the brake lever 15 is locking the locked portion 141 of the seaming band 14 as shown in the figure, the seaming band 4 is of a so-called one-end locking type, so that, for example, the brake drum 13 is When subjected to a rotational force in the direction of arrow A in Fig. 2, the tightening band 4 loosens with respect to the brake drum 13, and when subjected to a rotational force in the direction of arrow B (opposite arrow A) in Fig. 5, it tightens. It has a tendency to become.

Now, to explain the agitator 8 in detail, the agitator 8 is as shown in FIGS. 4 and 5! A flat protrusion 19f is formed on the 2vi disk portion 18, and is formed by protruding four wing portions 20 radially. −
Brake drum 13 in brake device 12 as shown in the figure
The side part 20a facing the direction of arrow B, i.e., the rotation side O, which is the direction in which the brake device 12 is tightened, has a substantially upright shape, and faces inward in the direction of the arrow, that is, the rotation side, which is the direction in which the brake device 12 is loosened. The side portion 201) is shaped like a circular arc 11 and 6, which is gentler than the side portion 20a.

In the above configuration, considering the washing time in which the rotating tank 7 is stopped by the brake device 12 and the agitator 8 is rotated in forward and reverse directions, the agitator 8 first rotates in the direction of arrow B (forward rotation direction) in FIGS. 5 and 6. In this case, the laundry and washing water in the rotating tub Z are made to flow in the rotating tub 7 by the projections 19 and the wing parts 20, especially the upright side parts 20a. In this case, the rotating tub 7 receives a rotational force in the direction of arrow B due to the flow of the laundry and washing water, thereby causing the brake device 1
Brake drum 13 connected to rotating tank 7 at 2
However, as described above with reference to FIG. The tightening force of the band 14 acts strongly, and the brake drum 13
There is no possibility that the rotating tank 7 will rotate.

Next, consider the case where the agitator 8 can be rotated completely in the direction of the arrow (reverse IO1 direction). However, since the side portion 201) has a gentle slope, the flow urging force on the laundry becomes slightly weaker, and the flow of the laundry and washing water becomes slightly slower than when the agitator 8 is rotated in the forward direction. Become. Therefore, the rotational force acting on the rotating tank 7 in the direction of arrow A is also weaker than in the case described above, and as a result, the rotational force of the brake drum 13 in the direction of loosening the seaming band 14 can be reduced. As a result, the tightening band 14 brakes the brake drum 15 against its rotational force, thereby reliably preventing the rotating tank 7 from rotating in the direction indicated by the arrow. Therefore, unlike the conventional system, which has the problem of rotating the rotary tub in the direction of flow of the laundry, the cleaning effect can be enhanced by using a thicker number, and the service life of the brake drum 13 and the tightening pad 12 can be extended completely. Damage to the brake drum 13 can also be prevented. Also, since the angles m1 of the side portions 20a and 2.01) of the wing portion 20 are different, the water flow is more complicated than in the conventional case. This can also further enhance the cleaning effect.

〔Effect of the invention〕

As is clear from the above description, the present invention includes a rotating tank, an agitator provided inside the rotating tank and having a wing section, a brake drum that rotates and stops together with the rotating tank, and a brake drum that rotates when braking the rotating tank. A braking device comprising a tightening band that loosens when rotated in one direction and tightens when rotated in the opposite direction, and releases the braking by the braking device during dewatering. In the washing and dewatering machine, the rotary tank and the agitator are integrally rotated, and the agitator is rotated in forward and reverse directions by applying braking by the brake device during washing. The feature is that the side facing the free rotation side is carved in a slope that is gentler than the side facing the opposite rotation side, which allows the rotation of the rotating tub during washing to be controlled. This can be reliably prevented, thereby greatly increasing the cleaning effect, prolonging the service life of the brake device, and preventing damage to the brake pad.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which FIG. 1 is an overall longitudinal sectional side view, FIG. 82 is a schematic plan view of the brake device, and FIG. 3 is a schematic plan view of the brake device in an operating state different from that in FIG. 2. , FIG. 4 is a cross-sectional view of the rotary tank portion, FIG. 5 is a perspective view of the agitator, and FIG. 6 is an enlarged sectional view of the wing portion. In the police map, 7 is the rotating tank, 8 is the agitator, and 12 is the pump (11).

Claims (1)

[Claims] 1. The rotary tank and the agitator provided inside the rotary tank and having a wing section are also provided with a brake drum that rotates and stops together with the rotary tank, and a brake drum that loosens when the brake drum rotates in one direction when braking the drum. and a brake device having a winding a# band that is tightened against rotation in the opposite direction, and the rotating tank and the agitator are released by releasing the braking by the brake device during dewatering. In the agitator, which rotates integrally and performs braking by the brake device during washing to rotate the agitator in forward and reverse directions, the wing portion of the agitator has a side portion facing the rotation side where the brake device is loosened, A dehydrating and washing machine characterized by being formed in a slope that is gentler than the side facing the reverse rotation side.