JPH0440068Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a water supply and drainage hose whose cross section can be folded flat when not in use.

(Prior Art) Conventionally, a water supply/drainage hose that is connected to a water pump or the like to perform drainage work, etc. has a relatively thin wall thickness, and is folded to a flat cross section when not in use. It is a device that can be stored by winding it in a spiral shape while it is folded flat.

(Problem to be solved by the invention) When carrying out water supply and drainage work using the above-mentioned water supply and drainage hose, since the supply and drainage hose is folded flat, there are places where the water supply and drainage hose has to go over corners of the drainage channel and protrusions of curb stones. In many cases, the hose is bent and crushed, and the water delivery area within the hose at the bent portion becomes extremely small, resulting in a decrease in the amount of water delivered.

In addition, during water supply and drainage work, pulsating flow occurs in the water supply and drainage hose due to air being mixed in, and vibrations caused by the pulsating flow also cause the ground surface of the hose to wear out.

The present invention adds a means to the above-mentioned water supply and drainage hose to ensure the required water supply area within the hose even when the hose body is bent, thereby reducing the water supply amount due to the bending of the hose. It is an object of the present invention to prevent the hose body from directly rubbing against the cutting surface due to vibrations caused by pulsating flow by providing a protective means on the ground surface of the hose.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the water supply and drainage hose of the present invention has a belt-like member with a substantially trapezoidal cross section that stably supports the hose body along the grounding part of the hose body. The surface of the belt-like member that meets the circumferential surface of the hose body is formed into a concave shape to match the circumferential shape of the hose body.

(Function) According to the above means, the strip member formed along the grounding part of the water supply/drainage hose body is grounded on the ground and stably supports the hose body from below during water supply, and instead of the hose body, the band member is formed along the grounding part of the water supply/drainage hose body. Under load. Further, the surface of the band-like member that meets the circumferential surface of the hose main body keeps the grounding portion of the hose main body in a concave shape in alignment with the circumferential surface of the hose main body. Even if the section of the hose main body is partially crushed at the bending point when the above-mentioned water supply and drainage hose is bent, the shape retention of the concave portion of the band-shaped member allows the grounding side inside the hose main body to A roughly semicircular water supply space is secured in the area.

(Effect of the invention) Since the invention is constructed as described above,
Even if the main body of the supply and drainage hose is bent by a corner of a drainage channel or a protrusion such as a curb, and the cross section of the hose is partially crushed, the concave part of the hose main body will be able to maintain its shape due to the shape retention of the concave part of the strip member. Since a substantially semicircular water supply space can be secured inside the portion attached to the water supply, a sufficient amount of water supply can be maintained using the water supply space.

In addition, the main body of the water supply and drainage hose is stably supported on the ground via the band-like member formed along the grounding part of the hose main body, so the main body of the water supply and drainage hose does not come into direct contact with the ground, and is therefore more convenient than conventional hoses. Similarly, the outer peripheral surface of the water supply and drainage hose does not rub against the ground and break due to vibrations caused by pulsating flow.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The water supply and drainage hose A shown in Figs. 1 to 3 is
Along the ground surface of the outer circumferential surface of the water supply and drainage hose body 1,
A belt-like member 2 that stably supports the hose main body 1 is integrally attached and configured.

The main body 1 of the water supply/drainage hose is formed into a relatively soft synthetic resin pipe with a plaid installed therein to a desired length, and is folded flat into a band shape when not in use.

The strip member 2 is integrally attached to the ground portion of the water supply/drainage hose body 1, that is, along the lower circumferential surface thereof, and has a trapezoidal cross section so as to stably support the hose body 1.

Further, the concave portion 2a in the strip member 2 that meets the circumferential surface of the hose body 1 is formed in a concave arc shape so as to follow the circumferential surface of the hose body 1 when the hose body 1 is expanded. . The above band-shaped member 2
The concave portion 2a has a shape-retaining property due to the appropriate thickness of the band member 2, so that even if the upper half of the drain plug hose body 1 is deformed so as to be crushed as shown in FIG. Also, the recess 2a of the same hose body 1
The part along the line is kept in a semicircular shape, and an arcuate water supply space b is secured inside the semicircular shape.

Therefore, as shown in FIG. 3, for example, when the water supply and drainage hose A connected to the submersible pump is pulled out from the drainage channel B, the water supply and drainage hose A is bent by the corner b of the drainage channel B. Even if the hose body 1 at the bent portion A' is partially crushed and deformed as shown in FIG. 2, the water supply space b secured inside the recess 2a inside the hose body 1 as described above. It is possible to maintain sufficient water supply by using

In addition, the water supply and drainage hose A stretched on the ground
The hose body 1 is grounded on the strip member 2. Therefore, even if vibrations occur due to pulsating flow, the water supply and drainage hose A will not be rubbed against the ground surface, and the water supply and drainage hose will not be worn out as in conventional hoses.

Incidentally, the water supply and drainage body 1 and the belt-shaped member 2 described above may be formed integrally, or both 1 and 2 may be formed separately and bonded together afterwards.

[Brief explanation of the drawing]

Fig. 1 is a vertical perspective view showing a water supply and drainage hose according to the present invention, Fig. 2 is a longitudinal perspective view showing the same water supply and drainage hose in a collapsed state, and Fig. 3 is a vertical perspective view showing the water supply and drainage hose in a collapsed state. It is a sectional view showing a water supply and drainage hose in a state where In the diagram, A... water supply and drainage hose, b... water supply space,
1... Water supply and drainage hose main body, 2... Band-shaped member, 2a
...Concavity.

Claims (1)

[Scope of utility model registration request] In a water supply and drainage hose whose cross section is folded flat, a belt-shaped member having a substantially trapezoidal cross section is attached and formed to stably support the hose main body along the ground contact part of the water supply and drainage hose main body, and the water supply and drainage hose in this belt-like member is A structure in which the surface that meets the circumferential surface of the main body is formed into a concave shape to match the circumferential shape of the hose main body.