JPH09303624A - Hose for washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine in which a pipe can be sharply bent with the piping maintaining the cylindrical pipe shape even in the vertically narrow space of the lower part of the washing tank, the bottom of the washing machine can be disposed in a low position and the vertical height of the whole washing machine is low relative to the vertical length of the washing tank. SOLUTION: In a hose for a washing machine provided on one end side with a water receiving tubular part 1 connected to a draining tube and on a part continued to the tubular part 1 with a bend formed part 2 bendably formed into the L-shaped form, the bend formed part 2 has a bellows-like irregular corrugation consisting of the combination of different diameter annular parts, and both sides of the bend formed part 2 in the axial direction of the pipe are held by annular parts 12, 12 projecting in the right angle direction from both sides of a base part 11 of the bend forming means 10. Large diameter annular parts 21, 21... in the bend formed part 2 about forcibly against each other at the small diameter side of a hose bending part to bend the hose at a right angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage hose used by being attached to an electric washing machine.

[0002]

2. Description of the Related Art Conventionally, a washing machine hose of this type is generally mounted on the inside of the washing machine and is hung along the outer box of the washing machine connected to the inside hose. There are two types of hose, one is a hose for external use, and the other is a single long hose in which the internal hose and the external hose are connected in series in place of these separate internal and external hoses. .

Any of these conventionally known hoses for a washing machine is provided with a water receiving tubular portion at one end for connecting to a drain tube in the washing machine. The hose has a tubular portion on the other end side for connecting to an opening formed in the side wall of the washing machine, and the inner-outer integrated hose projects to the outside through this opening. It has a long intermediate tubular portion.

On the other hand, the washing machines include a two-tank type in which a washing tub and a dehydrating tub are separately provided, and a one-tub type in which a washing tub and a dehydrating tub are combined. And in any of these types, the drainage pipe in the washing machine is provided in the vertical direction and opens downward, for connection or passage of the other end of the hose formed on the side wall of the washing machine. The opening is open horizontally. Therefore, regardless of whether the hose for a washing machine is the hose for an inside machine or the hose integrated with the inside and outside, the water receiving tubular portion is attached vertically to the drain pipe in the washing machine, and the external hose connecting tubular portion or hose is connected. Since the middle portion of the hose must be attached or passed horizontally to the opening of the washing machine, the hose must be changed by 90 ° between the drain of the washing machine and the opening.

[0005]

By the way, there are two ways to make a washing tub of a washing machine a large-capacity large tub: to increase the diameter of the tub or to increase the vertical length. If the size is increased, the outer case also needs to be made larger, and the appearance becomes large.
It is not preferable in all respects due to the high transportation cost, etc. Also, if the vertical length of the tub is increased to make the washing machine as a whole taller, the same problems as those mentioned above will occur, and It will be difficult to use for people with low levels.

Therefore, as a means for solving these problems, it is conceivable to increase the vertical length of the washing tub and make the lower space inside the washing machine as small as possible. Also,
This method is effective even when using a washing tub of the current size, and has an advantage that a washing machine having a low height and easy to wash can be obtained.

However, the conventional drainage hose has a large bending radius, making it difficult to form a sharp bend in the lower part of the washing tub, and requires a considerably large space inside the washing machine. It was compressed and deformed inside the washing machine, and it was impossible to keep the cylindrical state.

[0008] Therefore, the present invention has an object to solve the problems that the conventional hoses for a washing machine have, and it is possible to form a sharp bend, and the vertical space under the washing tub is small. Even if it is possible to pipe while maintaining a cylindrical shape, the vertical space of the lower part of the washing tub can be made as small as possible and the bottom part of the washing tub can be arranged at a low position. In view of the above, it is an object of the present invention to provide a washing machine hose capable of obtaining a washing machine with a low vertical height of the entire washing machine.

[0009]

The structure of the present invention for achieving the above object will be described with reference to the reference numerals used in the embodiments. A washing machine hose H according to the present invention has a washing machine A at one end thereof. The water receiving tubular portion 1 for connecting to the drainage tube a inside,
A hose for a washing machine, which is provided with a bend forming portion (2) for forming an L shape in a portion following the bend forming portion (2), wherein the bend forming portion (2) is composed of a combination of annular portions having different diameters. And both sides 23, 24 of the bend forming portion 2 in the tube axis direction are held by two annular portions 12, 12 projecting from both sides of the base portion 11 of the bend forming tool 10 in a substantially right-angled direction. On the small diameter side of the portion, the large diameter annular portions 21, 21 ... In the bend forming portion 2 are bent and formed at a substantially right angle so as to be in pressure contact with each other.

One specific form of the bend forming portion 2 is a large-diameter annular portion 21, 21 ... And a small-diameter annular portion 2.
2, 22 ... and a bellows-like corrugated corrugation, and another form is a large-diameter annular portion 21, 21.
... and annular portions 22, 22 having only a small diameter in the pipe circumferential direction
It is to have a certain structure as a corrugated corrugated waveform composed of a combination of ...

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In carrying out this hose,
The entire length of the hose is formed into a substantially straight shape, and then the bend forming portion 2 is formed into an L shape by using the bend forming tool 10. At this time, the large-diameter annular portions 21, 21 ... Constituting the bend forming portion 2 of the hose are brought into pressure contact with each other on the small-diameter side in the bending posture so as to have the minimum bending posture. The material for forming the hose is not particularly limited, but may be polyolefin resin or PVC.
A material having high water resistance such as a resin is preferable.

Further, the hose may be formed with flat cylindrical portions 2a, 2a on both sides of the bend forming portion 2 for fitting the annular portions 12, 12 of the bend forming tool 10, or It can be carried out by forming a flat tubular portion for fixing in the machine for fixing inside the washing machine at a required position in the middle part of the hose. In addition, the intermediate tubular portion 3
In this case, the predetermined length portion may be a flat cylindrical portion having no unevenness, and the shape of the unevenness waveform may be not only the unevenness waveform having a semi-circular cross section, but may also be an uneven scale unevenness waveform.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a hose H according to a first embodiment of the present invention, and FIG. 1 is a view showing a structure of the hose H shown by cutting a part thereof. Similarly, FIG. 3 is a diagram showing the structure of the hose H before bending formation, which is similarly broken away, and FIG. 3 is an enlarged view of the bending formation portion. FIG. 4 is a diagram showing a state where the washing machine A is mounted.

The washing machine hose H according to the present invention is a synthetic resin material, such as polypropylene (PP), which can be easily molded, and is made of a resin material having appropriate rigidity, elasticity and flexibility. A resin is extruded into a molding die into a tube shape and blow-molded into a linear shape. The hose H of the first embodiment is, as shown in FIG.
It is an in-machine hose that is attached inside the washing machine A to be piped.

As shown in FIG. 2, the structure of the hose H at the time of molding is such that the water receiving tubular portion 1 for connecting to the drainage pipe a in the washing machine A is formed at one end side, and the portion following it. To
A bend forming portion 2 for forming an L shape later is formed, and both sides 23, 24 of the bend forming portion 2 in the pipe axis direction are formed.
Flat tubular portions 2a, 2a are formed on the one end, and an intermediate portion between the tubular portion 2a on one side 24 and the external hose connecting tubular portion 4 formed on the other end side is formed into a bellows-like unevenness. The intermediate cylindrical portion 3 is formed in a wave shape, and the whole of these is integrally and substantially linearly formed. Also, the bend forming part 2
Is a corrugated corrugated waveform of a special shape in which large-diameter annular portions 21 and small-diameter annular portions 22 are alternately arranged.

Then, using the hose having such a structure, as shown in FIGS. 1 and 3, the bending portion 2 is formed.
The two annular portions 12 formed in two folds, which are protruded substantially at right angles from both sides of the base portion 11 of the bend forming tool 10 separately formed on the tubular portions 2a, 2a on both sides 23, 24 in the tube axis direction. , 12 are fitted and held, and the bending portion 2 is
The large-diameter annular portions 21, 21 ... Are pressed into contact with each other on the small-diameter side of the bent portion, and the outer diameters of the small-diameter annular portions 22, 22 ,. The structure is such that it is bent substantially at a right angle so as to be enclosed by the side walls of the annular portions 21 and 21 (in particular, see FIG. 3).

By doing so, the bending portion 2 is bent with an extremely small bending radius, and this bending posture is minimized. Further, the hose H in the embodiment is, as shown in an enlarged manner in FIG. 3, a bend forming portion 2 in the water receiving tubular portion 1 formed for connecting to the drain pipe a of the washing machine A formed at one end side. The portion 23 adjacent to the side is also used as the fitting tubular portion 2a of the one annular portion 12 of the bend forming tool 10, and the length of the water receiving tubular portion 1 is set to a short or small length. 1 and 2
Reference numeral 7 shown in (1) is a fitting portion to be inserted and fitted into the opening c opened in the side wall b of the washing machine A.

As described above, the hose H according to the present invention can be bent and used with a minimum vertical width. Therefore, as shown in FIG. 4, the lower end of the inner washing tub d in the washing machine A can be arranged to be significantly lowered, and the upper and lower space e under the washing tub d is used as a minimum. It is possible.

As shown in FIG. 6, the hose H of the second embodiment shown in FIGS. 5 and 6 is a hose formed in the portion to be mounted inside the washing machine A and the side wall b of the washing machine A. It is an inner-outer integrated hose in which a portion that is used by projecting to the outside from the insertion opening c is formed integrally into one continuous hose.

That is, in the hose H of the embodiment, the water receiving tubular portion 1 is formed at one end side for connecting to the drainage pipe a in the washing machine A, and the portion following the water receiving tubular portion 1 is different from that of the first embodiment. Similarly, a bellows-shaped uneven wave-shaped bend forming portion 2 in which a large-diameter annular portion 21 and a small-diameter annular portion 22 are alternately arranged is formed, and a portion to be connected to the inside of the washing machine A subsequent to this is formed. A long intermediate tubular portion 3 formed of a portion that protrudes to the outside through the opening portion c of the side wall b is formed in an annular corrugated shape, and has a tubular shape that is fixed to the opening portion c of the side wall b at the intermediate portion. Part 7 is formed,
At the tip end side of the external protruding portion, there are formed a tubular portion 8 which is detachably engaged with a hose engaging portion f fixed to the upper portion of the side wall b of the washing machine A and a tubular portion 6 for drainage, and these are entirely formed. It is a long-sized inner-outer integrated hose that is integrally formed in series.

Both sides 23 and 24 of the bending portion 2 in the tube axis direction are provided with the two annular portions 12 of the bending tool 10.
The first point is that it is held by 12 and bent in an L-shape, and the large-diameter annular portions 21, 21 ... Are bent and formed substantially at right angles on the small-diameter side of the bent portion so as to press-contact each other. Same as the embodiment. A generally known hook-type hose hooking device may be attached to the detachable / engaging cylinder portion 8 on the distal end side of the hose H for use.

In the embodiment shown in FIG. 7, in the hose H shown in the first and second embodiments, the structure of the bend forming portion 2 is the same as that of the adjacent large diameter annular portions 21 and 21. It shows an embodiment of a hose structure in which two small-diameter annular portions 21 and 21 are formed between them. The hose H according to the present invention can also be implemented in this manner.

In the embodiment shown in FIGS. 8 to 12, the bend forming portion 2 is formed by forming small-diameter annular portions 22, 22 ... Between the large-diameter annular portions 21, 21. Shape
This is an example of the annular portion 22 in which only a part in the pipe circumferential direction has a smaller diameter than the large diameter annular portion 21.

In the case of the fourth embodiment shown in FIGS. 8 to 10, the cross-sectional shape of the small-diameter annular portion 22 is shown in FIG.
As shown in FIG. 0, the structure is such that it is eccentric in one direction (downward in FIG. 10) compared with the circular portion 21 having a large diameter and a large diameter. The embodiment shown in FIG. 11 has a structure in which only the upper half portion is deformed so as to have a smaller diameter than the large-diameter annular portion 21. Further, the embodiment shown in FIG. 12 has a structure in which two portions, an upper portion and a lower portion, are deformed so as to have a smaller diameter than the large-diameter annular portion 21.

Although the examples considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these examples, and includes the above-mentioned constitutional requirements of the present invention. In addition, the object of the present invention can be achieved and appropriately modified within the scope of the following effects.

[0026]

As is apparent from the above description, the hose of the present invention, whether it is a hose for piping inside the machine or a hose integrated with the inside and outside, has a drain pipe in the washing machine formed at one end side. Bend forming part having a corrugated corrugated waveform by alternately arranging a part that follows the water receiving tubular part for connecting to the other part with different diameters such as a large diameter annular part and a small diameter annular part age,
Both sides of this bend forming part are held and bent by two annular parts of the bending part, and the small diameter side of this bending part is bent and formed at a substantially right angle such that the large diameter annular parts are in pressure contact contact with each other. Therefore, it is possible to form a sharp bend, and even if the vertical space at the bottom of the washing tub is small, the hose does not flatten due to bending and can be piped while maintaining a cylindrical shape. It has become possible to arrange the bottom part of the washing tub at a low position by making the upper and lower spaces of the as small as possible.

Therefore, it is not necessary to increase the vertical height of the washing machine as a whole even if the vertical length of the washing tub is increased to provide a large-capacity tub. In the case of a conventional large-sized washing tub, the vertical height is increased. Therefore, it is possible to obtain a remarkable effect that a washing machine having a low height can be obtained, and a washing machine that can be easily washed by a person with a short height can be obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a hose according to a first embodiment.

FIG. 2 is a partially cutaway front view of the hose of FIG. 1 in an unflexed state.

FIG. 3 is an enlarged front view of a bending portion.

FIG. 4 is a partially cutaway front view showing a state of attachment to a washing machine.

FIG. 5 is a front view of the second embodiment corresponding to FIG.

6 is a partially cutaway front view corresponding to FIG. 4 of the embodiment. FIG.

FIG. 7 is a front view showing a main part of the third embodiment.

FIG. 8 is a front view of the fourth embodiment corresponding to FIG.

FIG. 9 is an enlarged front view of the same embodiment as FIG.

10 is a cross-sectional view taken along the line AA in FIG.

FIG. 11 is a sectional view of another embodiment corresponding to FIG.

FIG. 12 is a sectional view of yet another embodiment corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water receiving tubular portion 2 Bending formation portion 3 Intermediate tubular portion 4 Connection tubular portion 5 External hose 6 Draining tubular portion 10 Bending forming tool 11 Base portion 12 Annular portion 21 Large diameter annular portion 22 Small diameter annular portion 23 One of Side 24 The other side A Washer a Washer drain

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[Procedure amendment]

[Submission date] August 26, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

[0009]

The structure of the present invention for achieving the above object will be described with reference to the reference numerals used in the embodiments. A washing machine hose H according to the present invention has a washing machine A at one end thereof. The water receiving tubular portion 1 for connecting to the drainage tube a inside,
A hose for a washing machine, which is provided with a bend forming portion (2) for forming an L shape in a portion following the bend forming portion (2), wherein the bend forming portion (2) is composed of a combination of annular portions having different diameters. And both sides 23, 24 of the bend forming portion 2 in the tube axis direction are held by two annular portions 12, 12 projecting from both sides of the base portion 11 of the bend forming tool 10 in a substantially right-angled direction. On the small diameter side of the portion, the large diameter annular portions 21, 21 ... In the bend forming portion 2 are bent in a substantially right angle so as to be in pressure contact or very close to each other.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In carrying out this hose,
The entire length of the hose is formed into a substantially straight shape, and then the bend forming portion 2 is formed into an L shape by using the bend forming tool 10. At this time, the large-diameter annular portions 21, 21 ... Constituting the bend forming portion 2 of the hose are brought into pressure contact contact or extremely close to each other on the small-diameter side in the bending posture so that the minimum bending posture is obtained. The material for forming the hose is not particularly limited, but a material having high water resistance such as a polyolefin resin or PVC resin is preferable.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

Then, using the hose having such a structure, as shown in FIGS. 1 and 3, the bending portion 2 is formed.
The two annular portions 12 formed in two folds, which are protruded substantially at right angles from both sides of the base portion 11 of the bend forming tool 10 separately formed on the tubular portions 2a, 2a on both sides 23, 24 in the tube axis direction. , 12 are fitted and held, and the bending portion 2 is
Is bent-shape, press Setto or extremely wherein the large diameter annular portion 21, 21 ... if you have each other in the smaller diameter side of the bent portion
A state adjacent Te is obtained by a structure in which small diameter annular portion 22, 22 ... outer peripheral portion of the are is substantially a right angle bend formed as a state enveloped in the side wall on both sides of the large diameter annular portion 21, 21 adjacent ( See especially Figure 3.)

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

Both sides 23 and 24 of the bending portion 2 in the tube axis direction are provided with the two annular portions 12 of the bending tool 10.
It is held by 12 and bent into an L-shape, and on the small diameter side of this bent portion, the large-diameter annular portions 21, 21 ... Are bent and formed at a substantially right angle so as to be in pressure contact or very close to each other. This is the same as the first embodiment. A generally known hook-type hose hooking device may be attached to the detachable / engaging cylinder portion 8 on the distal end side of the hose H for use.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

[0026]

As is apparent from the above description, the hose of the present invention, whether it is a hose for piping inside the machine or a hose integrated with the inside and outside, has a drain pipe in the washing machine formed at one end side. Bend forming part having a corrugated corrugated waveform by alternately arranging a part that follows the water receiving tubular part for connecting to the other part with different diameters such as a large diameter annular part and a small diameter annular part age,
A state in which both sides of the bend forming part are held and bent by two annular parts of the bending part, and the large diameter annular parts are in pressure contact contact or extremely close to each other on the small diameter side of the bending part. Since the hose is bent almost at a right angle to the hose, it can be bent sharply, and the hose does not flatten due to bending even if the upper and lower space under the washing tub is small Therefore, the upper and lower spaces of the lower part of the washing tub can be made as small as possible and the bottom part of the washing tub can be arranged at a low position.

Claims (3)

[Claims] 1. A water receiving tubular portion (1) for connecting to a drain pipe (a) in a washing machine (A) is provided at one end side, and a portion following the water receiving tubular portion (1) is L-shaped.
A washing machine hose having a bend forming part (2) for forming a bent shape, wherein the bend forming part (2) is formed into a corrugated corrugated waveform composed of a combination of annular parts having different diameters. ,
Moreover, both sides (23), (24) of the bending portion (2) in the pipe axis direction.
Is held by two annular portions (12), (12) projecting from both sides of the base portion (11) of the bending tool (10) in a substantially right angle direction,
A hose for a washing machine, in which the large-diameter annular portions (21), (21) in the bend forming portion (2) are bent and formed at a substantially right angle on the small-diameter side of the bent portion of the hose so that they are pressed against each other. 2. A water receiving tubular portion (1) for connecting to a drain pipe (a) in a washing machine (A) is provided at one end side, and a portion following the water receiving tubular portion (1) is L-shaped.
A hose for a washing machine, comprising a bend forming portion (2) for forming a bent shape, wherein the bend forming portion (2) has a large diameter annular portion (21), (21) ... The combination of the annular portions (22), (22) ... Has a corrugated corrugated corrugation, and both sides (23) and (24) of the bend forming portion (2) in the pipe axis direction are bend forming tools. The large diameter of the bend forming part (2) is held by two annular parts (12) and (12) protruding from both sides of the base part (11) of the (10) in a substantially perpendicular direction, and on the small diameter side of the hose bent part. Annular parts (21), (21) ... A hose for a washing machine that is bent and formed at a substantially right angle so that they are pressed against each other. 3. A water receiving tubular portion (1) for connecting to a drain pipe (a) in a washing machine (A) is provided at one end side, and a portion following the water receiving tubular portion (1) is L-shaped.
A hose for a washing machine, comprising a bend forming portion (2) for forming a bent shape, wherein the bend forming portion (2) has a large diameter annular portion (21), (21) ... A corrugated corrugated corrugation formed by a combination of annular portions (22), (22) ... A part of which has a small diameter and both sides of the bend forming portion (2) in the pipe axis direction ( 23) and (24) are two annular parts (12) and (12) protruding from both sides of the base part (11) of the bending tool (10) in a substantially right angle direction.
The large diameter annular portions (21), (21) in the bend forming portion (2) are bent and formed at a substantially right angle on the small diameter side of the hose bending portion so that they are pressed against each other. Hose for washing machine.