JPS61293497A - One-tub type 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 Application of the Invention] The present invention relates to a single-tank washing machine, and particularly to improving the vibration-proofing performance of a washing and dehydrating tank.

[Celebration of invention]

As shown in Fig. 4, the conventional one-tank washing machine has a washing tank 6 that also serves as a dewatering tank, and a stirring blade 5t.When washing, the washing tank 6 is held stationary by a bearing clutch 22, and the stirring blade 5 is rotated back and forth to perform dewatering. Sometimes both the stirring blades and the washing tank are rotated at high speed, and centrifugal dehydration is carried out through a large number of holes provided in the side wall of the washing tank 6.

A balancer 7 filled with salt water or the like is attached to the top of the washing tank 6 in order to cancel the unbalanced vibration caused by the rattling of the cloth during dewatering and to alleviate the vibration of the washing machine.

If you make this balancer heavier and increase the weight of the washing tank, the absorption of unbalance will improve somewhat, but there is a limit to how much the weight of the washing tank can be increased, so there is a limit to the improvement of vibration-proofing performance. This is the problem. As an example of this type of device, %KOKAI No. 58-617915 can be mentioned.

An object of the present invention is to provide a washing tank that further improves vibration damping performance without increasing the weight of the washing tank.

[Purpose of the invention]

In the present invention, the side wall of the washing tank is a non-porous cylinder whose inner diameter at the lower part is slightly larger than that at the upper part, and a second bottom plate is provided above the first bottom plate of the cylinder at a distance from the first bottom plate. Water-tightly joined to form a double bottom made of Japanese cypress, the second bottom plate has an outer edge and the first bottom plate has a small diameter circumference spaced apart from the outer edge of the bottom plate toward the center. Along each side, multiple drainage holes were arranged in parallel to form a washing tank.

[Summary of the invention]

According to this configuration, when the washing tank is rotated at high speed to dehydrate the washed clothes, the water separated from the clothes moves downward along the slope of the side wall and flows through the drain hole of the second bottom plate into the double drain hole. The ice flows into the ice receiving chamber formed by the bottom, flows into the outer tank through the drainage hole of the first bottom plate, and is discharged outside the machine. At this time, since the drainage hole of the first bottom plate is far from the side wall, the second
As shown in the figure, water is stored in a donut shape between the button, side wall, and drain hole, and this acts as a balancer.

Since this action additionally acts on the salt water balancer 7 in the upper part, the vibration damping effect can be increased without increasing the weight of the salt water balancer. The additional effect can be further increased by selecting the location of the drainage holes in the first bottom plate. In this case, there is no increase in the weight of the washing tank.

[Embodiments of the invention]

As shown in FIG. 1, the outer tank 2 is vibration-proofly supported from the upper end of the outer frame 1 by a hanging rod 4 via a spring 3. The washing tank 6 is fixed to the upper end of a vertical rotating shaft that penetrates the center of the bottom plate 23 of the outer tank 2 in a watertight manner and projects upward. The washing tank 6 has an inner diameter slightly larger at the lower part of the side wall than that at the upper part, and has a double bottom by joining a first bottom plate 8 and a second bottom plate 5a to a non-porous cylinder. A plurality of ribs 11 are fixed in the vertical direction on the inner surface of the side wall io, and stirring blades 5 are fixed on the upper surface of the second bottom plate 5a.

A drainage hole 5b is provided at the outer end of the second bottom plate 5a, and a plurality of drainage holes 9 are arranged in parallel on a circumference of a small diameter circle that is spaced from the outer end of the first bottom plate 8 toward the center. ing.

A drive mechanism 12 for rotating the washing tank 6t is attached to the bottom plate 23 of the outer tank 2. Rotation of motor 13 causes pulley 1
4. Belt 15, stirring pulley 16f: Transmitted to the drive mechanism 12 via.

When washing, water is supplied into the washing tank 6 from the water supply port 21, and the water is also filled into the outer tank 2 through the drain port 5b of the bottom plate 5a of the washing tank and the drain port 9 of the bottom plate 8. If the motor 13 is started by a pressure switch that responds to the water level,
The washing tank 6 is reciprocated at low speed by changing the number of poles or converting the frequency. The clothes in the washing tank 6 are washed by the stirring blade 5.
Dirt is removed by the flow of washing water generated by the ribs 11.

During dewatering, the washing water in the washing tank 6 is drained by drainage from the outer tank 2, and the action of vibration prevention during the subsequent high-speed rotation during dehydration of clothes is as described above.

〔Effect of the invention〕

According to the present invention, since the washing liquid acts as a balancer during dehydration, the weight of the washing machine itself is not increased, and the fluid balancer acts in two places, the upper and lower, and the vibration damping effect is increased.

Furthermore, the intermittent high-speed operation method has the effect of reducing noise.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a longitudinal section of a single-tank washing machine of the present invention, Fig. 2 is a longitudinal sectional view of the washing machine for explaining the invention in detail, and Fig. 3 is a longitudinal section of the washing tank draining state. FIG. 4 is a front view showing a vertical section of a conventional one-tank brewing machine.

Claims (1)

[Claims] 1. A washing tank is fixed to the upper end of a vertical rotating shaft that watertightly penetrates the center of the bottom plate of the outer tank suspended in the outer frame and projects upward. It is a non-porous cylinder with an inner diameter slightly larger than that of the upper part, and a plurality of ribs are provided in the vertical direction on the inner surface of the cylinder. The second bottom plate is watertightly connected to the side wall to form a double-bottomed washing tank, and the stirring blade is fixed to the upper surface of the second bottom plate, and the first bottom plate is attached to the outer end of the second bottom plate. The tank has a structure in which multiple drainage holes are arranged in parallel at positions away from the outer edge toward the center, and an automatic system that repeatedly rotates the washing tank in low-speed forward and reverse directions when washing is desired, and intermittently rotates it at high speed during spin-drying. A one-tank washing machine characterized by being equipped with a control device.