JPS59214488A - 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 Field of Industrial Application This invention relates to a washing machine with an improved agitator structure.

Conventional Structure and Problems Conventionally, whirlpool type washing machines, which have an agitator at the bottom of the tank and rotate at 200 to 800 rpm, have been most popular in Japan. The characteristics of the whirlpool method are that the cleaning method is simple, the mechanical part can be realized at low cost, and the cleaning effect is high, but on the other hand, the clothes get tangled during washing, the washing is uneven, and the damage to the fabric is high. It has disadvantages such as relatively large size.

FIG. 1 shows a conventional example. 1 is the main body of the dehydrating washing machine, and 2 is a panel section installed at the rear of the upper part of the main body 1, which has a built-in time switch and the like. Reference numeral 3 denotes an outer tank which is supported by a suspension 4 for vibration isolation within the main body 1, and 6 is a washing tank which also serves as a dehydration tank and is rotatably supported within the outer tank 3, with a balance weight on the peripheral wall of the upper opening. 6 is installed. '7 is an agitator installed at the inner bottom of the washing tub 6, and is attached to the agitation drive shaft 16. Reference numeral 8 denotes a mechanism section consisting of a bearing, a brake and a clutch, 9 a boot 9 on the side of the mechanism section 8, and 10 a V-belt, and 11 a motor pulley attached to the shaft of the motor 12. A drain hose 13 is connected to the bottom of the outer tank 3 and communicates with a drain port 14 attached to the side wall of the main body 1.

This washing machine performs washing by rotating the agitator 7, but as mentioned above, there are problems with clothes getting tangled, uneven washing, and fabric damage.

OBJECTS OF THE INVENTION The washing machine of the present invention solves this conventional problem by improving the structure of the agitator.

Structure of the Invention In the washing machine of the present invention, the agitator is composed of a plurality of parts, and the rotational speed of each agitating blade part has a relative speed difference.This reduces the load torque of the motor and increases the speed of washing of cloth. It reduces damage and tangles and maintains high cleaning power.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the attached FIGS. 2 and 3. The overall structure of the washing machine is the same as the conventional example shown in FIG. 1 except for the structure of the agitator. Therefore, only the different parts will be explained. A sun gear 16 is fixed to the stirring drive shaft 15 and meshes with each of the planetary gears 17.

The planetary gear 17 meshes with the internal gear 19.

The internal gear 19 is fixed inside the first stirring blade base 20. A plurality of stirring blades 21 are provided on the outer surface of the first stirring blade base 2o. The carrier 18 is fixed to the stirring driven shaft 24.

The planetary gear mechanism part consisting of the above-mentioned parts is
2 and the first stirring blade base portion 20, and the housing 22 is watertightly sealed to the stirring blade base portion 20 with screws B.

A second stirring blade base portion 25 is fixed to the stirring driven shaft 24, and a plurality of stirring blades 26 are similarly provided on the second stirring blade base portion 25.

This second stirring blade base portion 25 is similar to the first stirring blade base portion 20.
The embodiment shown in FIG. 2 shows an agitator for a whirlpool type washing machine, and the embodiment shown in FIG. This figure shows the agitator of a type washing machine.

The operation of the above configuration will be described with reference to FIG. The deceleration is transmitted to. At this time, if the loads applied to the first and second stirring blade bases 20.25 are the same, they rotate in the same direction and at the same speed. There is a size difference in the shape of the stirring blades 21.26 of the blade base portion 20.25, and there is also a difference in the way the load is applied between them depending on the stirring conditions. For this reason, the stirring driven shaft 24 rotates in the same direction as the stirring drive shaft 15, but the first stirring blade base 20 to which the internal gear 19 is fixed rotates in the opposite direction to the stirring drive shaft 15.

Moreover, depending on the load conditions of the first and second stirring blades 21.26, a relative speed difference occurs between the first and second stirring blade bases 20.25, and the load on the first stirring blade 21 is reduced. When the load on the second stirring blade 26 is relatively large, the second stirring blade base 25 rotates in the opposite direction at a high rotation speed, and conversely, when the load on the second stirring blade 26 is relatively large, the first stirring blade The base 2o is configured to rotate in the opposite direction at a high rotational speed, thereby increasing the relative speed difference.

In this way, since the agitating blades 21 and 26, which are divided into a plurality of parts, perform an agitating motion according to the load condition of the laundry, it is possible to generate the same relative speed at a lower rotational speed than before. In addition, the output of the motor 12 can be suppressed to a low level, damage to the cloth can be reduced, and the cleaning performance can be improved with less cloth tangled.

In the embodiment, a single-tub type dehydrating washing machine has been described, but it is clear that the present invention is also effective in a two-tub type washing machine.

Effects of the Invention As is clear from the above embodiments, the stirring blade has a divided structure and the relative speed difference between each part of the stirring blade is increased depending on the load condition, thereby suppressing the rotational speed of the stirring blade to a lower speed than before. In addition, since the load torque can be reduced, the output of the motor can be reduced. Also,
It is possible to improve cleaning performance while minimizing damage to the fabric, and the configuration is also possible by providing a planetary gear mechanism.
A washing machine with a simple structure, low cost, and high reliability can be provided.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a conventional example of a one-tub dehydrating washing machine, and FIGS. 2 and 3 are vertical cross-sectional views showing embodiments of an agitator installed in the washing machine of the present invention. 1... Body, 6... Washing tub, 20.2
5...First and second stirring blade bases, 21.26...
... Stirring blade. Name of agent: Patent attorney Toshio Nakao (1 person) Figure 1

Claims (1)

[Claims] A first agitator with agitating blades is installed at the inner bottom of the washing tub.
The first stirring blade base part is composed of a stirring blade base part and a second stirring base part having a stirring blade located above the first stirring blade base part. The second stirring base part is connected to the washing machine via a planetary gear mechanism.