JPS6021032Y2 - washing machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a stain prevention device for a washing and dehydrating tub in a fully automatic washing machine.

First, the structure of a fully automatic washing machine will be explained based on FIG.

Reference numeral 1 denotes a machine frame; 2 an outer tank suspended and supported within the machine frame 1 by a plurality of hanging rods 3; and 4 a perforated washing and dewatering tank disposed within the outer tank 2.

A laundry input port 6 covered with a lid 5 that can be opened and closed is provided on the top surface of the machine frame 1.

7 is a clutch fixed to the center of the bottom surface of the outer tank 2, which receives the rotating force of the electric motor 8, which is also fixed to the bottom surface of the outer tank 2, via a small pulley 9, a belt 10, and a large pulley 11;
The pulsator 12 provided inside the washing and dehydrating tank 4 or the washing and dehydrating tank 4 itself can be selectively rotated.

13 is a drain valve attached to the bottom of the outer tank 2.

Now, in recent years, traditional soap powders have been gaining popularity as an alternative to synthetic detergents because they cause less water pollution and have stronger cleaning power.

However, powdered soap has the disadvantage that it produces a lot of soap scum.

Soap scum adheres to the inner and outer surfaces of the washing and dehydrating tub 4 and the inner surface of the outer tub 2.

Most of the soap scum attached to the inner surface of the washing and dehydration tank 4 flies out of the tank during dehydration, and is also carried away with clothes, so it hardly remains.

The inner surface of the outer tub 2 is also smooth like the inner surface of the washing/drying tub 4, and since the dehydrated rinsing water collides with it and washes it away, there is hardly any soap scum remaining.

However, the outer surface of the washing and dehydrating tub 4 has a rough surface finish, and if it is molded from synthetic resin, reinforcing ribs 14 are provided vertically and horizontally, making it extremely easy for soap scum to adhere to it. .

Moreover, the attached soap scum cannot be removed even by the centrifugal force during dehydration.

In this way, soap scum 15 is deposited in a layer on the outer surface of the washing/drying tub 4 as shown in FIG.

The soap scum 15 becomes black as time passes, becomes liberated during washing, flows back through the through hole of the washing/dehydration tank 4, and stains the laundry.

The present invention has been made to solve the above-mentioned problems.

That is, in the present invention, as shown in FIG. 3, an upwardly inclined guiding surface 16 and a substantially perpendicular repelling surface 17 are formed.

The inclined guide surface 16 starts near the bottom of the outer tub 2 and gradually increases in width in the direction of rotation of the washing and dehydrating tub 4, rising up until it reaches the middle height of the washing and dehydrating tub 4. Or, it ended a little past that.

The repelling surface 17 rises continuously from the end of the inclined guide surface 16, and is slightly oriented toward the washing and dewatering tub 4.

Next, the action will be explained.

When rinsing is completed and dehydration begins, a considerable amount of water that cannot be drained remains at the bottom of the outer tank 2, and this water is circulated at high speed together with the washing/dehydration tank 4.

Water circulating along the inner circumferential surface of the outer tub 2 rises along the inclined guide surface 16, collides with the repelling surface 17, and is slammed against the outer surface of the washing/drying tub 4.

As a result, soap scum adhering to the outer surface of the washing and dehydrating tub 4 is washed away.

Depending on the washing program, before starting spinning, the washing/spinner tub 4 is rotated with enough rinse water left to soak the laundry, and the laundry is evenly distributed in the tub. A similar soap scum washing action occurs.

As described above, in this invention, we focused on the fact that rinsing water circulates at the bottom of the outer tank during spin-drying, and this circulating water is scooped up by an inclined guiding surface provided on the inner surface of the outer tank, and is continuously distributed on several surfaces. The soap scum is washed away from the washing/dehydrating tank by being bounced off the outer surface of the washing/dehydrating tank by the splashing surface provided on the surface of the washing/dehydrating tank, thereby preventing the residual layer from fighting or turning black and contaminating the laundry. It can be avoided, the configuration is simple, and the practical effect is great.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the washing machine of the present invention, with Figure 1 being a sectional view, Figure 2 being a plan view of the outer tub and the washing/drying tub, and Figure 3 showing the inner surface of the outer tub. FIG. 3 is a perspective view of main parts. FIG. 4 explains the problem to be solved by the present invention. FIG. 3 is a partial cross-sectional view of a washing and dehydrating tank. 2...Outer tank, 4...Washing/dehydration tank, 1
6... Inclined guiding surface, 17... Repelling surface.

Claims (1)

[Scope of utility model registration request] A washing and dehydrating tank is disposed in an outer tank, and an inclined guide surface is provided on the inner surface of the outer tank to scoop up circulating water generated at the bottom of the outer tank when the washing and dehydrating tank rotates for dehydration, and the inclined guide surface This washing machine is equipped with a splashing surface that bounces water scooped up by the washing and dehydrating tank onto the outer surface of the washing and dehydrating tank.