JPH0731796Y2 - hose - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hose, and more particularly to a hose which is housed in a fire hydrant device installed indoors or outdoors and which allows water to pass through even when housed in the device. It is a thing.

The fire hydrant hose used to have a thin rubber lining on the inner surface of a tubular cloth, similar to a fire hose, and was stored in a flat folded state.
Since this hose cannot hold a circular cross section, when using it, the hose must be pulled out from the fire hydrant over the entire length and it must be extended straight to allow water to pass through. Was extremely difficult to use.

Therefore, in recent years, a fire hydrant has been used in which a hose capable of holding a circular cross section is housed, and the hose can be pulled out and discharged while allowing water to pass through the hose while being housed in the fire hydrant.

FIGS. 2 and 3 show an example of this fire hydrant. Reference numeral 1 is a fire hydrant box, and a hose storage box 2 is provided in the fire hydrant box 1. The hose storage box 2 comprises a front plate 2a, a rear plate 2b, an upper plate 2c, a lower plate 2d and both side plates 2e, 2f, and an annular opening 3 is formed in the center of the front plate 2a. A ring 4 for hose guidance is mounted around the part 3.

Reference numeral 5 denotes a separator, which is formed by bending a plate into a substantially "V" shape to form guide surfaces 6 and 7, and is provided in the hose storage box 2.

8 is a hose, one end of which is connected to the water supply source 9,
A water discharge nozzle 10 is attached to the other end.

By pushing the hose 8 through the opening 3, the hose storage box 2 is sequentially stored in the shape of "8" along the guide surfaces 6 and 7 of the separator 5 from the rear plate 2b to the front plate 2a. When the hose 8 is pulled from the outside, the hose 8 stored in the "8" shape is sequentially unwound and pulled out from the opening 3.

2. Description of the Related Art As a hose 8 used for this kind of fire hydrant,
An elastic layer of soft rubber or synthetic resin is formed on the inner and outer surfaces of a tubular reinforcing body in which synthetic fiber yarn is braided on a blade, and the elasticity of the elastic layer causes the hose to hold a circular cross section, which makes it difficult to be crushed by external force. In addition, a material that can recover a circular cross section due to the elasticity of the elastic layer even when it is crushed or bent is used.

Problems to be Solved by the Invention However, in this hose, the elastic layer is exposed to the outside and the coefficient of friction of the elastic layer is large, so that it is extremely difficult for the hose to slide when adjacent hoses are in contact with each other. Therefore, when storing the hose 8 in the hose storage box 2, the hose 8
When the hose 8 comes into contact with the part of the hose 8 that has already been stored, the hose 8 cannot be moved to an appropriate position while sliding, and it is difficult to reliably store the hose 8 in the hose storage box 2. .

The same is true when pulling out the hose 8, and due to the frictional resistance between the hoses 8 that are in contact with each other, the adjacent hose 8 tends to be pulled out together with the opening 3 to cause a large resistance, and sometimes the hose is stored. In some cases, the hose 8 may become entangled in the box 2 and cannot be pulled out.

Further, the frictional resistance between the hose 8 and the inner surface of the hose storage box 2, the separator 5, the ring 4, etc. is large, and even if the hose 8 is pulled out from the hose storage box 2 by eliminating those resistances, the hose 8 slides on the floor surface. The frictional resistance is large when the hose 8 is pulled out, and a very large force is required to pull out the hose 8.

It may be possible to reduce the frictional resistance by increasing the hardness of the elastic layer of the hose 8, but the hose 8 as a whole becomes stiff and inferior in handleability, and since such a stiff hose 8 becomes difficult to bend, it is necessary to store it. The fire hydrant box 1 is inevitably large and is not preferable.

Also known is a group of hoses called so-called spiral hoses, in which a linear body such as a rigid wire or bristles of synthetic resin is spirally wound around the surface of a flexible hose and the circular cross section is retained by the rigidity of the linear body. However, this type of hose is not preferable because when it is flattened by applying a large external force, the linear body is broken and cannot recover to a circular cross section.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a hose that has a small frictional resistance and can be easily stored in and pulled out from the hose storage box 2.

Means for Solving the Problems In the present invention, the elastic layer made of rubber or synthetic resin is formed on the inner and outer surfaces of the cylindrical reinforcing member made of synthetic fiber, and the elastic layer keeps the circular cross section. A tubular braided body in which a monofilament yarn or a multifilament yarn of synthetic fiber is braided is loosely fitted to the outside.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a hose 8 of the present invention, in which reference numeral 11 is a tubular reinforcing body formed by braiding synthetic fibers. The tubular reinforcing member 11 is made of synthetic fiber yarns such as polyester and polyamide fibers, 32
A blade that is braided by a design such as beating or 64 beating, a triaxial woven fabric that is braided with two sets of skewed yarns and warp yarns, and a yarn that is wound in a spiral shape at an angle are used.

Elastic layers 12 and 13 made of rubber or synthetic resin are formed on the inner and outer surfaces of the cylindrical reinforcing body 11. And the elastic layer 12,
Due to the elasticity of 13, the hose 8 has a circular cross section.

For the elastic layers 12 and 13, natural rubber, synthetic rubber, soft polyvinyl chloride resin, a blend thereof, or the like is used. Then, elastic layers 12 and 13 are formed on the inner and outer surfaces of the cylindrical reinforcing body 11, and the elastic layers 12 and 13 are integrated through the tissues of the cylindrical reinforcing body 11 so that the circular cross section of the hose 8 can be held. Is relatively thick.

A tubular braided body 14 is loosely fitted to the outermost portion. The tubular braided body 14 is a filament of synthetic filament monofilament yarn or multifilament yarn such as polyester, polyamide, etc., which is coarsely braided into a tubular shape by a structure such as 12 striking, 16 striking, 32 striking. The tubular braided body 14 is loosely fitted to the outer elastic layer 13 without adhering thereto.

The tubular braid 14 does not have to cover the entire surface of the outer elastic layer 13, but it is sufficient if the outer layer 13 is roughly covered so that the outer elastic layer 13 does not directly contact the adjacent hose 8 or the floor surface.

The thickness of the yarns constituting the tubular braided body 14 is the diameter of the hose 8,
For example, in the case of a hose having an inner diameter of 20 mm, a multifilament yarn having a diameter of 1000 to 5000 d or a monofilament yarn having a diameter of 0.3 to 1.0 mm is suitable, although it varies depending on the number of lines to be aligned.

Operation In the present invention, the tubular braid 14 is formed in the outermost layer of the hose 8. Since the tubular braid 14 is made of synthetic monofilament yarn or multifilament yarn, the friction resistance is small. Moreover, the hose 8 and the contact portion between the hose 8 and the hose storage box 2 or the floor surface are in contact with each other through the thin monofilament thread or the multifilament thread, so that the contact area is small.

Therefore, the frictional resistance is small when the hoses 8 are in contact with each other, and the hoses 8 are likely to slip when the hoses 8 are stored in the hose storage box 2 or when the hose 8 is pulled out. Further, the frictional resistance between the hose 8 and the inner wall of the hose storage box 2, the opening 3, the floor surface, etc. is small, and it slides easily.

Therefore, according to the present invention, even if the newly inserted hose 8 portion and the hose 8 portion already contained in the hose storage box 2 come into contact with each other when the hose 8 is stored, the hose 8 parts are not separated from each other. You can easily slide and move to the appropriate position,
The hose 8 can be reliably stored in the hose storage box 2.

Further, when the hose 8 is pulled out, the hose 8 slides with each other, so that the hose 8 adjacent to the hose 8 to be pulled out does not try to be pulled out together, and the hose 8 is pulled out in order from the end. In addition, the hose 8 does not get caught in the hose storage box 2.

Further, even if the hose 8 comes into contact with the inner surface of the hose storage box 2, the opening 3, the floor surface, etc., the hose 8 can be easily slipped, and the hose 8 can be pulled out with a small force without excessive resistance.

Further, unlike the linear body in the spiral hose described above, the yarns constituting the tubular braided body 14 are themselves flexible, so that the hose 8 can be easily deformed by an external force,
Moreover, the elasticity of the elastic layers 12 and 13 can recover the deformation. Therefore, the hose of the present invention can be bent with a small radius of curvature.

[Brief description of drawings]

FIG. 1 is a perspective view of the hose of the present invention. 2 and 3 show a fire hydrant device to which the present invention is applied, FIG. 2 is a front view, and FIG. 3 is a right side view with a part cut away. 8 ... Hose, 11 ... Cylindrical reinforcement 12,13 ... Elastic layer, 14 ... Cylindrical braid

Claims (1)

[Scope of utility model registration request] 1. An elastic layer (12, 13) made of rubber or synthetic resin is formed on the inner and outer surfaces of a cylindrical reinforcing body (11) made of synthetic fiber, and the elastic layer (12, 13) is elastic to give a circular cross section. And a tubular braid (14) braided with a monofilament yarn or a multifilament yarn of synthetic fiber is loosely fitted to the outermost part of the hose.