JP3121695B2 - hose - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a drain hose.

[0002]

2. Description of the Related Art Usually, an electric washing machine is provided with a drain hose of about 1 meter, but this drain hose alone may be short. Therefore, in the above case, a drain hose for extension is connected to the drain hose.
As the extension drain hose, there is a drain hose shown in FIG. 12, which is formed of a vinyl chloride resin, has flexibility, and has a main body 11 which mainly constitutes a hose;
Each end of the hose has a large / short mouth portion 12, 13 thicker than the main body.

The long and long mouth 12 is longer than the short and short mouth 13, and the long and long mouth 12 is usually connected to the tip of a drain hose of the electric washing machine. Wastewater is discharged outside. By the way, in the above-mentioned conventional art, the main body 11 and each of the mouth portions 12 and 13 are manufactured separately, and after manufacturing, they are bonded by an adhesive to be integrated.

[0004]

For this reason, in the above-mentioned prior art, the number of parts of the extension drain hose is large, and
It is necessary to adhere the main body 11 and each of the mouth portions 12 and 13,
The manufacture of the extension drain hose is troublesome, and the body 1
There was also a fear of water leakage due to poor adhesion between the opening 1 and each of the mouth portions 12 and 13. An object of the present invention is to provide a hose that can solve the above problems.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention is characterized in that it is formed of a synthetic resin, has flexibility, has a main body constituting a hose, and a hose end. The main body and the mouth are integrally formed, and the main body is provided with an A.I. A pipe wall; The tube has a reinforcing wire rod which is thicker than the wall thickness of the tube wall and is spirally provided on the tube wall. B. a tube wall formed integrally with the tube wall of the main body and having a greater thickness than the tube wall of the main body; It is formed integrally with the reinforcing wire of the main body, is thinner than the thickness of the reinforcing wire of the main body and the thickness of the tube wall of the mouth, and is provided spirally as a substantially internal shape on the tube wall of the mouth. It may have a reinforcing wire rod.

[0006]

When the hose is used, for example, the mouth at one end is connected to the tip of a drain hose of an electric washing machine or a cooler, and the drain of the electric washing machine is discharged from the other end to the outside. . In the above case, since the main body and the mouth are integrally formed, there is no fear of water leakage due to poor adhesion between the main body and the mouth.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to an extension drainage hose will be described below with reference to FIGS. 1 and 2 show an extension drain hose, which has a circular cross-section, and has a tube wall 1 and a helical shape in the tube wall 1 and an oval or circular cross-section. And the reinforcing wire 2 provided. The tube wall 1 and the reinforcing wire 2 are formed of an olefin-based synthetic resin, and in the embodiment, are formed of polyethylene. The extension drain hose has a main body 4 that mainly forms the hose, and long and short mouths 5 and 6 that form each end of the hose, and is integrally formed.

The reinforcing wire 2 of the main body 4 is entirely thicker than the wall of the tube wall 1 of the main body 4, and the outer peripheral portions of the reinforcing wire 2 and the tube wall 1 (that is, the reinforcement of the main body 4). Wire rod 2
Is provided, a ridge 8 projecting radially outward in a curved shape is formed in a spiral shape. The inner surface of the main body 4 is a smooth surface, and the inner diameter is constant over the entire length in the axial direction. The long and short mouths 5 are longer than the short and short mouths 6. In the long and short mouth portions 5 and 6, the tube wall 1 is made thicker than the tube wall 1 of the main body 4, and the reinforcing wire 2 is made thicker and the mouths 5 and 6 of the reinforcing wire 2 of the main body 4. The reinforcement wire 2 is made thinner than the tube wall portion 1 of the mouth portions 5 and 6, and each of the mouth portions 5 and 6 has no ridge portion. The inner and outer surfaces are smooth surfaces. The inner diameter and the outer diameter of each of the mouth portions 5 and 6 are constant over the entire length in the axial direction.

In the case of manufacturing the above-mentioned drainage hose for extension, a strip of fixed width made of semi-molten polyethylene is continuously extruded from a forming nozzle of a strip-shaped extruder to form the strip. The tube wall portion 1 is formed by spirally winding on a rotary shaft for use and overlapping corresponding ends in the width direction at adjacent winding portions and welding them together.
At the same time, at the same time, the reinforcing wire 2 made of semi-molten polyethylene is discharged from the forming nozzle of the extruder for reinforcing wire.
Is extruded continuously, and sandwiched between the overlapping ends of the adjacent wound portions, whereby the reinforcing wire 2 is contained in the tube wall 1.

In each of the mouths 5, 6, the pipe wall 1 is made thicker than the pipe wall 1 of the main body 4 by increasing the extrusion amount of the band-shaped material from the forming nozzle. The reinforcing wire 2 is made thinner than the reinforcing wire 2 of the main body 4 by reducing the amount of extrusion from the forming nozzle 2. When the above-mentioned extension drain hose is used, usually, the long and large mouth 5 is connected to the tip of a drain hose such as an electric washing machine or a cooler, and the drain of the electric washing machine or the like is discharged from the short mouth 6 to the outside. Is done.
It should be noted that another extension drainage hose may be further connected to the short end portion 6.

By the way, in the above extension drain hose,
Since the main body 4 and the mouth portions 5 and 6 are integrally formed, the number of parts of the extension drainage hose can be made single, and there is no need to bond the parts when manufacturing the extension drainage hose. The extension drain hose can be easily manufactured, and there is no danger of water leakage due to poor adhesion between the main body 4 and each of the openings 5 and 6. Further, since the extension drain hose is made of polyethylene instead of vinyl chloride, there is no problem that toxic gas is generated during incineration.

FIG. 3 shows a first comparative example of the present invention, in which the reinforcing wire 2 is provided only in the main body 4 and the reinforcing wires 2 are not provided in the openings 5 and 6. FIGS. 4 and 5 show examples of the second embodiment and the second comparative example of the present invention, which are modifications of the first embodiment and the first comparative example, respectively. The inner peripheral surface and the outer peripheral surface of the portion 5 are formed in a tapered shape inward in the axial direction. In each of these examples, after the band-shaped material and the reinforcing wire 2 are wound on the forming rotary shaft, the long opening 5 is formed in a tapered shape by performing an appropriate processing. In the second embodiment and the second comparative example, since the long mouth 5 is formed in a tapered shape, the diameter range of the distal end of the drain hose to which the long mouth 5 can be connected can be widened.

FIGS. 6 to 9 show examples of a third embodiment, a third comparative example, a fourth embodiment, and a fourth comparative example of the present invention, respectively. In a modified example of each of the comparative example, the second embodiment, and the second comparative example, the reinforcing wire 2 is attached to the inner peripheral surface of the tube wall 1, and the reinforcing wire 2 is substantially inside the tube wall 1. The inner diameter of the main body 4 is substantially constant over the entire length in the axial center direction. In the third and fourth comparative examples,
No reinforcing wire 2 is provided at each of the mouth portions 5 and 6.
Further, in each of the above examples, at the time of manufacturing the extension drain hose, the reinforcing wire 2 is directly spirally wound on the forming rotary shaft,
A strip material is wound thereon. FIGS. 10 and 11 show fifth and sixth comparative examples of the present invention, which are modifications of the first and second embodiments of the present invention, respectively. In the fifth and sixth comparative examples, the tube wall of the first and second embodiments and the reinforcing wire are integrated, and a semicircular ridge 8 is integrally formed on the tube wall 1. In the fifth and sixth comparative examples, at the time of manufacturing the extension drainage hose, when the strip is extruded from the forming nozzle, the ridge 8 is formed on the outer surface of the strip.

In the embodiment, the hose has long and short mouths at each end. However, the length of each mouth may be the same, or only one end may have a mouth. May be provided. Further, in the embodiment, both the opening portions are formed integrally with the main body, but only one opening portion may be formed integrally with the main body.

[0015]

As described in detail above, according to the present invention,
The following effects are obtained. I. Since the main body and the mouth are integrally formed, the number of parts of the hose can be reduced, and the bonding process at the time of manufacturing the hose can be reduced. Therefore, the hose can be easily manufactured, and the main body and the mouth can be easily connected. There is no danger of leakage due to poor adhesion of. B. Since the main body and the tube wall of the mouth are integrally formed, and the reinforcing wire of the main body and the mouth are also integrally formed, the extrusion of the reinforcing wire is stopped when the mouth is formed at the time of manufacturing the hose. The main body and the mouth can be easily formed continuously, and even when a large number of hoses are formed continuously, it can be easily performed. C. By making the tube wall of the main body thin, the flexibility of the main body can be made sufficient, and the reinforcing wire of the main body is made thicker than the wall thickness of the main body, so that the strength of the main body is also increased. Can be large. D. Since the tube wall of the mouth is made thicker than the tube wall of the main body, it can be firmly connected when other hoses, pipes, joints and the like are connected to the mouth. E. Since the reinforcing wire of the mouth is thinner than the reinforcing wire of the main body, the elasticity of the mouth can be increased, and when connecting other hoses, pipes, joints, etc. to the mouth, for example, in the mouth, Even when fitting other hoses, pipes, fittings, etc.,
The above-mentioned fitting can be easily performed by the elastic deformation of the mouth. What. Since the reinforcing wire rod at the mouth is thinner than the wall of the tube wall at the mouth, and is made substantially intrinsic to the tube wall at the mouth, the inner and outer peripheral surfaces of the mouth have almost no irregularities. it can. Thereby, even when other hoses, pipes, joints, and the like are fitted to and connected to the inner or outer peripheral surface of the mouth, other hoses, pipes, joints, or the like are fitted to the inner or outer peripheral surface of the mouth. Can be easily fitted and firmly fitted.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a half sectional view showing a first embodiment of the present invention.

FIG. 3 is a half sectional view showing a first comparative example of the present invention.

FIG. 4 is a half sectional view showing a second embodiment of the present invention.

FIG. 5 is a half sectional view showing a second comparative example of the present invention.

FIG. 6 is a half sectional view showing a third embodiment of the present invention.

FIG. 7 is a half sectional view showing a third comparative example of the present invention.

FIG. 8 is a half sectional view showing a fourth embodiment of the present invention.

FIG. 9 is a half sectional view showing a fourth comparative example of the present invention.

FIG. 10 is a half sectional view showing a fifth comparative example of the present invention.

FIG. 11 is a half sectional view showing a sixth comparative example of the present invention.

FIG. 12 is a half sectional view showing an example of the related art.

[Explanation of symbols]

1 ... tube wall, 2 ... reinforcement wire, 4 ... body, 5, 6 ... long
Short-mouthed part, 8 ... ridge.

Claims (1)

(57) [Claims] 1. A hose made of a synthetic resin, having flexibility and having a main body constituting a hose and a connection port constituting an end of the hose, wherein the main body and the mouth are integrally formed. And the main body is A. A tube wall; It has a reinforcing wire rod which is thicker than the wall thickness of the tube wall portion and is provided spirally on the tube wall portion, and the mouth portion has: B. a tube wall formed integrally with the tube wall of the main body and having a greater thickness than the tube wall of the main body; It is formed integrally with the reinforcing wire of the main body, and is thinner than the thickness of the reinforcing wire of the main body and the wall thickness of the tube wall of the mouth,
A hose having a reinforcing wire rod spirally provided in a tube wall portion of a mouth as a substantially internal shape.