JPS62167595A - Two-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 INDUSTRIAL APPLICATION The present invention relates to a two-tub washing machine for general household use, particularly to a washing tub holding structure.

2, - Conventional technology A typical two-tub washing machine will be explained with reference to FIG.

In other words, the washing tub 1 made of resin molding is the dehydration tub 2.
is formed integrally with. There are rotor blades 3 on the bottom of the washing tub 1.
The rotation of the washing motor 5 fixed to the underframe 4 is
Rotation is transmitted to the rotor blade 3 via the motor pulley 6, belt 7, and impeller pulley 8 shaft 9.

The tubs (washing tub 1 and dehydration tub 2) are fixed to the box 10 at the upper end with screws, and the box 10 is fixed to the underframe 4 at the lower end with screws. In other words, the tank is box body 1
0 is suspended from the upper end surface.

Problems to be Solved by the Invention However, in the conventional configuration, the washing tub 1 has a motor pulley 6.
In order to prevent slippage between the impeller pulley 8 and the belt 7 and loss of power transmission, the belt 7 is stretched to a certain degree of tension, so the washing tub 1 is always It is constantly being pulled in the direction of motor 5.

Further, while the washing motor 5 is rotating, its pulling force increases. The deformation of the washing tub 1 due to this force sometimes becomes large when hot water is used during washing. The deformation of the washing tub 1 occurs as shown by the two-dot chain line in FIG. 6 because the -A part is fixed to the box body 10. Also, since the washing tub 1 contains more than 301" water or hot water during washing, the washing tub 1 deforms downward due to its weight.

Due to the above deformation, the contact between the belt 7 and the impeller pulley 8 and motor pulley 6 becomes uneven, reducing the contact area between the two, making slipping more likely, loss of power transmission, and rotational speed. Washing without rotating the wing 3 for 1 minute.
The rinsing performance becomes insufficient.

Moreover, due to the deformation of the washing tub 1, the positions of the impeller pulley 8 and the motor pulley 6 become closer, so that the belt becomes loose and sag.

In view of the above-mentioned problems, the present invention solves the problem that washing performance and rinsing performance, which are the basic performance of washing machines, deteriorate due to belt slippage due to deformation of the washing tub and the resulting insufficient rotation of the rotor blades. The purpose is to

Means for Solving the Problems In order to achieve the above object, the two-tub washing machine of the present invention does not hold the washing tub only by the upper end surface of the box, but also holds the washing tub from the bottom by a protruding body that protrudes from the underframe. It is a configuration that is maintained from

With the structure described above, the protruding body protruding from the underframe holds the washing tub from below, preventing the washing tub from being deformed in one direction by the washing motor through the belt, and reducing the weight of hot water and water in the washing tub. This prevents the washing tub from deforming downward,
Prevents deterioration in cleaning and rinsing performance due to belt slip and resulting insufficient rotation of the rotor.

EXAMPLE Hereinafter, an example of the present invention will be explained with reference to FIGS. 1 to 4.

In the figure, 11 is a drain pipe connected to the bottom of the washing tub 1 for drainage, and the inside is an L-shaped hollow pipe and a vertically protruding pipe as shown in 5 in Figure 1. did,
A tube portion 12 is integrally formed, a partition wall 12 is provided between the two, the lower end of the tube portion 12 is open, and a rod body 13 is formed integrally with the underframe 4. is inserted,
A space of several millimeters is provided between the inner wall of the tube portion 12 and the rod 13 on both the upper surface and the side wall. This space is provided in consideration of variations in the shape of the tank and underframe 4 during molding, etc.
When assembling the product, the tube part 12 and the rod 13 can be inserted smoothly.

As described above, there are the following three advantages of holding the washing tub 1 by the underframe 4 via the drain pipe 11.

First, the drain pipe 11 is attached to the bottom of the washing tub so that the position is continuous with the downwardly protruding step A14 provided at approximately the center of the bottom of the washing tub, as shown in Fig. 3. stepped section B1
It is attached to the bottom surface of 5, and the step part A141 step part B1
The entire bottom of the washing tub 1 is held by the underframe 4 via the drain pipe 11 by continuous side walls 16 of 5. Compared to this configuration,
Step A14゜6 /, -7 If you try to hold the washing tub 1 at the bottom of the washing tub 1 other than the step B15, force will be applied only to the holding section.For this reason, the entire washing tub will be held. It is not possible to do so, and on the contrary, only the holding part is deformed.

The second advantage is that of the positional relationship in the height direction. That is, as shown in FIG. 2, the drain pipe 11 is located at the lowest part of the bottom of the washing tub 1 so that no water remains in the washing tub 1. In addition, since the distance between the drain pipe 11 and the underframe 4 decreases by the amount that the drain pipe 11 extends downward, the distance between the drain pipe 11 and the underframe 4 decreases.
The height of the pipe part 12 integrally formed with the underframe 4 and the rod body 13 integrally formed with the underframe 4 is such that the height of the pipe part 12 is directly from the bottom of the washing tub 1.
The structure is lower than that in the case where the tube section 12 and the rod body 3 are provided, and the amount of material is also reduced, and the strength against the force in the perpendicular direction of the tube section 12 and the rod body 3 is increased.

As a third advantage, since the drain pipe 11 is also connected to the bottom of the dehydration tank 2, it has the function of preventing deformation of the washing tub 1. The conventional drain pipe 11 has a washing tub 1 and a dehydration tub 2.
However, since they are not connected to other fixed parts, such as the underframe 4 and the box bodies 1o and 7, both tanks may deform at the same time. Even though both tubs were connected, they were not sufficiently effective against deformation of the washing tub 1.

On the other hand, in this embodiment, the drain pipe 11 and the underframe 4
Since the washing tub 1 is connected, deformation of the washing tub 1 is prevented by both the underframe 4 and the dehydration tub 2, and the synergistic effect of the two provides sufficient power.

It's a trench. As shown in Figure 4, there are 7 tanks and 10 boxes. The order of assembling the three parts of the underframe 4 is to first fasten the underframe 4 and the flange part 16 on the lower end surface of the box body 10 with screws, insert the V-shaped flange part 17 of the tank into the upper end of the box body 10, and then screw It's stopped. Compared to the overlap dimension &18 between the upper end surface of the box body 10 and the V-shaped flange portion 17 of the tank, the insertion dimension b of the tube portion 12 and the rod body 13 is
19, there is a relationship b>a, and when inserting the rice cake upward into the box body 10, first insert the underframe 4 into the pipe part 12 provided in the drain pipe 11 at the bottom of the washing tub 1. The rod 13 provided at the bottom is inserted, and the insertion of both serves as a guide to smoothly insert the upper end surface of the box 10 and the V-shaped flange 7 of the tank. Since the ■-shaped flange part 1 is made to cover the outer circumference of the tank, it takes time to insert it into the box body 1o, but due to the function of the guide, the insertion of both can be carried out smoothly.

The dimension C20- is the gap between the pipe portion 12 and the rod 13 after insertion, and the initial value of this dimension C20 is set to O due to the deformation of the washing tub 1 when water is poured into the washing tub 1. This prevents the pipe part 12 and the rod body 13 from coming into contact with each other during product assembly, which makes assembly impossible, and also minimizes downward deformation due to water or hot water in the washing tub 1.

Effect of the invention As described below, the present invention provides the following effects.

(1) Prevents deformation of the washing tub due to water or hot water placed in the resin washing tub and drives the rotor blades. It prevents the increase in slip between the impeller pulley, motor pulley and belt, and prevents deterioration of the washing machine's basic performance such as washing and washing.

9-Beno (2) When assembling the product, a protrusion formed integrally with the underframe is inserted into the drain pipe provided on the bottom of the washing tank to guide the work of delivering the tank to the box. This allows for smooth assembly work.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a sectional view of main parts of a two-tub washing machine according to an embodiment of the present invention, Fig. 2 is a rear view of the same, Fig. 3 is a -F side view of the same, and Fig. 4 is 5 is a partially cutaway front view of a conventional two-tub washing machine, and FIG. 6 is a partially cutaway front view showing a modification of the same washing tub. 1...Washing tub, 4...Underframe, 11...
Drain pipe, 12... Pipe portion (protruding body), 13...
... Rod body (protruding body). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 7-2 Previous washing tank 4--Ichiusui 7 no-'fl# 7 Do, Ut /2- Beibang (missing = wood) /, 3- Serving body) Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (3)

[Claims] (1) A drain pipe fitted to the bottom of the washing tub, a protruding body integrally formed with the drain pipe and protruding downward, an underframe serving as a base, and a protruding body integrally formed with the underframe protruding upward. A two-tub washing machine comprising a protruding body, and one of the protruding bodies having another protruding body inserted therein. (2) When water is poured into the washing tub between both protrusions,
A two-tub washing machine according to claim 1, in which no gap occurs. (3) The insertion dimension of both protrusions is set larger than the insertion dimension of the flange provided on the upper outer periphery of the washing tub and the box covering the outer periphery of the washing machine. Tank type washing machine.