JPH07246299A - Double vessel type washing machine - Google Patents

Abstract

PURPOSE:To prevent abnormal vibrations at the time of a dehydrating operation by linking and exactly positioning a washing vessel and a dehydrating vessel with a supporter provided at one of the bottom parts of the washing vessel and the dehydrating vessel and a fixed holder provided at the other bottom part. CONSTITUTION:Integrally molded washing and dehydrating vessels 3 and 4 are fitted to an outer cabinet 1. A cylindrical body 12 protruded at the bottom part of the dehydrating vessel 4 is tapered-shaped to be thickened toward its root, and functioned as the supporter. A drainage port at the lower part of the washing vessel 3 and a discharge port at the bottom part of the dehydrating vessel 4 are communicated by a drainage pipe 6a and connected to a drainage hose 7. A fixed holder 6b provided at the drainage pipe 6a is fitted to the cylindrical body 12 and fixed. On the other hand, the cylindrical body 12 and the fixed holder 6b are integrally molded into respective parts. Thus, since the washing machine is held at three points by the fixed holder 6b, washing vessel 3 and cylindrical body 12 of the dehydrating vessel 4 while being formed integrally with the drainage pipe 6a, noises are prevented from being generated by abnormal vibrations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-tub type washing machine in which a washing tub and a dehydrating tub are integrally formed by resin molding.

[0002]

2. Description of the Related Art FIG. 4 is a schematic sectional view of a general two-tub washing machine. The washing tub 3 and the dehydration tub 4 are integrally formed by resin molding. The drainage port at the bottom of the washing tub 3 and the drainage port at the bottom of the dehydration tub 4 are connected by a drainage pipe 6a. A drain hose 7 is connected to the drain port of the drain pipe 6a. The washing tub 3 and the dehydration tub 4 are fixed at the upper end of the outer casing 1 by screws or other appropriate means.
A bottom table 2 to which a washing motor 8 and a dehydration motor 9 are attached and fixed is fixed to the lower portion of the outer casing 1 by screws or other appropriate means.

[0003] 10 is a pulsator arranged at the inner bottom of the washing tub 3, 15 is a belt for transmitting the driving force of the washing motor 8 to the pulsator 10, 5 is a dewatering basket arranged inside the dewatering tub 4, and 16 is dewatering. A shaft for transmitting the driving force of the dehydration motor 9 to the basket 5 and an operation panel 17 disposed above the washing tub 3 and the dehydration tub 4.

FIG. 5 is a cross-sectional view of an essential part of a joining portion at the boundary between the washing tub 3 and the dehydration tub 4 integrally formed with the washing tub 3. The slope is exaggerated for clarity. In FIG. 5, the washing tub 3 is arranged on the left side of the dehydration tub 4.

The wall 20 at the boundary between the washing tub 3 and the dehydration tub 4 is provided with a draft of a mold formed by integral molding. Therefore, for example, the wall thickness of the upper end of the wall 20 is 1.5 mm,
Part A where the washing tub 3 and the dehydration tub 4 are separated from the upper end of the wall 20
If the distance to is 400 mm and the draft is 1/200 (usually 1/60), the difference in wall thickness between the upper end of the wall 20 and the part A to be separated is 4 mm. The average thickness d of the bottom 3-1 of the washing tub 3 and the bottom 4-1 of the dehydration tub 4 is set to 2
When the thickness is mm, there is a difference in wall thickness between the parts. In addition, a valley portion 13 is formed at the boundary between the bottoms of the washing tub 3 and the dewatering tub 4 for carrying and stacking these molded bodies.

As shown in FIG. 5, a washing tub 3 and a dehydration tub 4 integrally formed with the washing tub 3 are provided at the boundary between the trough 13 and a boundary wall 2 between the tubs for transporting and stacking the molded articles.
Due to the difference in wall thickness above and below 0, there is a difference in the shrinkage of the resin after molding at each part, and there is a tendency for the resins to deform so as to approach each other as indicated by arrow a. This is because the thicker portion has a larger shrinkage after molding than the thinner portion. For this reason, internal stress is generated and it deforms.

[0007]

Due to the above-mentioned deformation, there is a problem that the dehydration basket 5 arranged inside the dehydration tank 4 is eccentric with respect to the dehydration tank 4, and this eccentricity causes abnormal vibration during dehydration operation. there were. In order to prevent this, a separate device that can slide into the mold is provided so that the wall 20 has a uniform wall thickness.

The valley portion 13 is deepened to have the same wall thickness. A column is provided on the base 2 and is inserted into the valley 13 to prevent deformation.

Methods such as the above have been considered. However, in the above method, the die becomes complicated and large, the cost of the die becomes high, and the molding cost becomes high.

The method (1) has a large size and increases the transportation cost. It is also necessary to consider the strength of the product, and when water is put in the tub, there is a problem that the space between the washing tub and the dehydration tub is widened due to the load of the water.

In the method of (1), it is not always possible to reliably correct the deformation at the time of assembly due to the dimensional error of the molding of the washing tub and the dehydrating tub, the dimensional error of the outer casing 1, the dimensional error of the bottom stand 2, and the like.

[0012]

According to the present invention, one of the integrally formed washing tub and dehydration tub is provided with a fixed holding member that extends from the bottom to the other bottom, and either the washing tub or the dehydration tub is provided. On the other hand, a support protruding downward from the bottom of the support is provided, and the fixed holding body and the support are joined together to fix the positions of the washing tub and the dehydration tub.

More specifically, a cylindrical support is provided at the bottom of the washing tub, and a fixed holder is provided on a drain pipe that connects the drain of the bottom of the washing layer and the drain of the bottom of the dehydration tub. Is provided, and the tubular body is fitted and fixed in a fitting hole opened in this fixed holding body, and the gap between the washing tub and the dehydration tub is maintained at a regular interval.

[0014]

The bottom of the washing tub and the bottom of the dewatering tub are fixed by the support provided on either one and the fixed holder provided on the other, so that the positions of the washing tub and the dewatering tub are fixed.

When a fixed holder integrally formed with a drain pipe communicating the bottom of the washing tub with the bottom of the dehydrating tub is used, it is supported and fixed at three points of the washing tub, the dehydrating tub and the tubular body. The eccentricity problem of the dehydration basket is solved because the positions of the dehydration tank and the dehydration tank are surely corrected and always properly positioned.

[0016]

1 is a bottom perspective view of an embodiment of the present invention. The base is omitted. A washing tub 3 and a dehydration tub 4 which are integrally formed are attached inside the outer casing 1. A drain pipe 6a connects a drain port at the bottom of the washing tub 3 and a drain port at the bottom of the dehydration tub 4, and a drain hose 7 is connected to the drain port of the drain pipe 6a. Reference numeral 12 is a cylindrical body which is a support body protruding from the bottom of the washing tub 3. As shown in FIG.
The tubular body 12 is a hollow, tapered pipe that becomes thicker from the tip toward the root, and is easy to insert. The drainage pipe 6a and the plate-shaped fixed holding body 6b having the fitting hole 14 into which the cylindrical body 12 is inserted are integrally molded to form the drainage molded body 6. The pipe 6c of the drainage molded body 6 is connected to the drainage port at the bottom of the dehydration tub 4, and the pipe 6d is connected to the drainage port at the bottom of the washing tub 3.

FIG. 2 is a sectional view of the bottoms of the washing tub 3 and the dewatering tub 4. A valley portion 13 exists at the boundary between the washing tub 3 and the dehydration tub 4 which are integrally formed of resin, and the lower portion of the wall 20 is gradually thickened due to the draft. And
Although the washing tub 3 and the dehydration tub 4 tend to be deformed toward each other due to contraction and deformation after molding,
This deformation is achieved by fitting the cylindrical body 12 projecting from the lower portion of the washing tub 3 into the fitting hole 14 of the fixed holding body 6b which extends to the outside of the drainage pipe 6a and fixing the same. Is being corrected.

FIG. 3 is a perspective view of a portion where the cylindrical body 12 is inserted into the fitting hole 14 of the fixed holding body 6b.

As described above, the drain pipe 6a and the fixed holding body 6b.
And are integrally molded. It can also be formed separately and joined.

As described above, the drainage pipe 6a and the fixed holder 6b formed integrally with the drainage pipe 6a form the washing tub 3 and the dehydration tub 4
By holding the discharge port and the cylindrical body 12 at three points,
The washing tub 3 and the dewatering tub 4 can always be maintained at regular positions.

In the above description, the tubular body 12 is integrally formed with the washing tub 3, but the tubular body 12 may be connected to the connecting portion provided at the bottom of the washing tub 3. In addition, the cylindrical body 12 is attached to the dehydration tank 4
It is also possible to provide the fixed holding body 6b on the side of the washing tub 3 on the side thereof.

The cylindrical body 12 does not have to be a cylinder, and its fixing effect is increased by increasing the width.

[0023]

Since the present invention is constructed as described above,
The washing tub 3 and the dewatering tub 4 are always held at regular positions, whereby the dewatering basket is not eccentric, and therefore abnormal vibration during the dewatering operation can be prevented. Moreover, if the tubular body and the fixed holding body are integrally formed with the respective parts and provided, it is not necessary to upsize the washing tub 3 and the dehydration tub 4, and the whole can be put together in the same size, and the manufacturing cost can be reduced. It can be kept cheap.

[Brief description of drawings]

FIG. 1 is a bottom perspective view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of bottom portions of a washing tub and a dehydrating tub.

FIG. 3 is a perspective view of an assembly portion of a drainage molded body and a cylindrical body.

FIG. 4 is a schematic cross-sectional view of a conventional two-tub type washing machine.

FIG. 5 is a sectional view of a boundary portion between a washing tub and a dehydrating tub.

[Explanation of symbols]

 1 Outer casing 2 Bottom stand 3 Washing tub 4 Dehydration tub 5 Dehydration basket 6 Drainage forming body 6a Drainage pipe 6b Fixed holding body 7 Drainage hose 8 Washing motor 9 Dehydration motor 10 Pulsator 12 Cylindrical body 13 Trough 14 Fitting hole 15 Belt 16 Shaft 17 Operation panel 20 Wall

Claims (2)

[Claims] 1. A washing tub and a molded body including a dehydration tub integrally molded with the washing tub, and an outer casing for accommodating the washing tub, wherein one of the washing tub and the dewatering tub has a bottom portion other than a bottom portion thereof. Providing a fixed holding body protruding to one side, a supporting body protruding downward from the bottom of the washing tub or the dehydrating tub is provided on the other side, and the fixing holding body and the supporting body are combined to form a washing tub and a dehydrating tub. A two-tub type washing machine characterized by fixing the position. 2. The support body is formed in a tubular shape and is provided at the bottom of the washing tub, and the fixed holding body is formed in a plate shape having a fitting hole, and is provided at a drain pipe provided at the bottom of the dehydration tub. The two-tub washing machine according to claim 1, wherein the support is fitted and fixed in the fitting hole of the fixed holder.