JP4531172B2 - Fire hose - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire hose, in particular, ease and stretched hose stretched when stretched hose from the storage state is extended straight, relates to a so-called stretched for improvement.
[0002]
[Prior art]
Fire fighting hoses generally used are a jacket made by weaving a warp yarn made of fiber and a weft yarn into a cylindrical shape, and a lining layer made of a rubber material or a synthetic resin material bonded and fixed to the inner peripheral surface of the jacket, It has a double structure.
[0003]
This type of hose is usually stored in a flat state, wound around a reel, and stored and transported as it is. In actual use, the hose is sequentially drawn out from the reel, and then the high-pressure water is introduced into the hose so that the hose bulges into a circular shape.
[0004]
As the hose, the part along the both side ends in the state of being folded flat is called the ear part, and the color yarn for making identification of the hose manufacturer, for example, is almost along the middle part between these ear parts. It is sewn and is called the handle.
[0005]
That is, the said handle | pattern part is a pattern provided in the single side | surface side of the hose folded in flat shape, and is provided in the surface of a hose. The portion on the back side of the hose handle is called the back portion.
[0006]
[Problems to be solved by the invention]
When performing fire fighting using the fire hose constructed in this way, it is necessary to stretch the hose that is in storage for a moment and to inject it from the tip of the hose through high pressure water.
[0007]
Therefore, conditions required for fire fighting hoses include easiness of stretching when the hose is stretched from the storage state and so-called stretchability in which the stretched hose stretches straight. However, as a conventional fire hose, not reached until fully satisfied with stretched resistance.
[0008]
The present invention has been made paying attention to the above circumstances, the purpose of which is to improve the easiness of stretching the hose from the state of storage and the so-called stretchability that the stretched hose extends straight It is intended to provide a fire hose that can be used to make it easier.
[0010]
[Means for Solving the Problems]
In order to satisfy the above object , a fire hose according to the present invention comprises, as claimed in claim 1, a lining layer made of a rubber material or a synthetic resin material fitted on the inner surface of a jacket in which warp yarns and weft yarns are woven into a cylindrical shape. In addition, the handle between the ears or only between the ears that are both side ends in the state where the hose is folded in a flat shape , and the part corresponding to the outer peripheral side when wound on a reel, etc. A warp yarn at a portion corresponding to the back portion is twisted by selecting a yarn that is thicker than the warp yarn at the other portion, and a stretch accelerating portion formed by weaving into a belt shape of a predetermined width is provided.
[0015]
As claim 2, the stretched accelerator unit in fire hose of claim 1 is in the longitudinal direction of the hose, characterized in that it consists of plural rows of belts provided in parallel to each other.
[0019]
By adopting the means to solve such problems, when the hose is extended from the storage state in which the hose is wound around a reel or the like, the extension promoting part applies a weight to the hose in the extension direction, so that it is stable. The stretched hose is straight and has good stretchability.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
A first embodiment is shown in FIG. 1 and FIG. FIG. 1 is a perspective view of a fire hose H, and shows a state in which a hose H folded flat and wound on a reel (not shown) is expanded in the direction of the arrow in the figure. FIG. 2 schematically shows a cross section of a fire hose.
[0022]
This fire hose H has a double structure of a jacket (also called a tubular cloth) 1 and a lining layer 2 that is bonded and fixed to the inner surface of the jacket 1 and integrated with the jacket.
[0023]
The jacket 1 is formed by weaving a warp yarn 1a and a weft yarn 1b into a cylindrical shape. Here, the warp yarn 1a and the weft yarn 1b are twisted as described later to form a yarn, and at a predetermined ratio. It is driven and woven.
[0024]
The lining layer 2 is made of a flexible rubber material or a synthetic resin material and is lined on the jacket 1. For example, a thermoplastic elastomer lining is applied to the inner surface of the jacket 1.
[0025]
The fire hose H is stored in a state of being folded into a flat shape and wound around a reel or the like, and is transported as it is to a place of use. In actual use, if the reel is moved or rotated, the hose H is sequentially fed out and expanded, and then the high-pressure water is turned on to bulge and deform in a circular shape.
[0026]
In such a fire hose H, portions along both side ends in a state of being folded flat are called ear portions 3 and 3. A color thread for identifying a hose manufacturer, for example, is sewn along the substantially middle portion between the ear portions 3 and 3, and this is called a handle portion 4a.
[0027]
That is, the handle portion 4a is provided on the surface of the hose on the one side of the hose H folded in a flat shape. And the back side of the handle | pattern part 4a is called the back part 4b.
[0028]
Here, when the handle portion 4a or the back portion 4b of the jacket 1 is wound around a reel and put into a storage state, the expansion promoting portion 5 is provided along only the portion corresponding to the outer peripheral side of the hose H. It is a feature.
[0029]
In other words, the expansion promoting part 5 is formed in a belt shape having a predetermined width, and when the fire hose H in a storage state is expanded, the weight is applied along the extending direction. As a result, the fire hose H is immediately and stably stretched, so that it is easy to stretch and the stretched hose H is straightened, and so-called stretchability is good.
[0030]
The actual configuration of the stretch promoting part 5 is, for example, using 10 pieces of polyester spun yarn (φ2.3 mm) as the warp yarn 1a ₁ of the corresponding part, and using 30 strands of 10 twisted yarns aligned. is doing.
[0031]
On the other hand, for the warp yarns 1a ₂ other than the stretch promoting portion 5, 542 yarns obtained by selecting 20th polyester spun yarn (φ0.96 mm) and aligning six twisted yarns are used. is doing.
[0032]
Therefore, by forming the warp yarn 1a ₁ constituting the extension promoting portion 5 in a belt shape using a yarn thicker than the warp yarn 1a _{2 at} other portions, the weight is applied in the extension direction during the extension. Good sex.
[0033]
In addition, when the hose H in a wound state is stretched when the fire hose H is used, the outer surface of the hose H is slidably contacted with the road surface and easily wears. However, in the fire hose H, the stretch promoting portion 5 is provided on the outer surface. Therefore, the extension promoting portion 5 comes into sliding contact with the road surface, and an improvement in wear resistance is obtained.
[0034]
Even if there is a sharp glass piece or metal piece on the road surface and it may come into contact with the outer surface of the fire hose H, the extension promoting portion 5 actually comes into contact with these, so the lining layer 2 The trauma that leads to is not easily affected.
[0035]
After being used once, it is completely dried and taken up on the reel again. At this time, the expansion promoting part 5 is composed of only a part of the hose H that is flattened. Smooth winding is possible.
[0036]
In addition, as the expansion promoting part 5, a reinforcing cloth having a predetermined width may be bonded to the handle part 4a between the ear parts 3 and 3, or rubber latex may be applied to a predetermined part between the ear parts 3 and 3. It may be impregnated in a belt shape, and in short, it is sufficient that weight can be applied in the extending direction at the time of expansion.
[0037]
Further, as shown in FIG. 3, the two parallel development promoting portions 5 and 5 are provided only between the ear portions 3 and 3 and at a portion corresponding to the outer peripheral side in a state where the hose Ha is wound. You may do it.
[0038]
Or as shown in FIG. 4, you may make it provide the two expansion | deployment promotion parts 5 in parallel with each other between the ear | edge parts 3 and 3 and this double-sided side. That is, a plurality of deployment promoting portions 5 are provided over the longitudinal direction of the hose Hb.
[0039]
Any of the development promoting portions 5 has a belt shape, and is selected from any of those that are impregnated with a thicker yarn, reinforcing cloth, or rubber latex than other portions as described above.
[0040]
FIG. 5 shows a fire hose Hc according to the second embodiment.
Although not shown in detail, basically, as described above, the jacket 1 and the lining layer 2 have a double structure, and the jacket 1 is formed by weaving the warp yarn 1a and the weft yarn 1b in a cylindrical shape. And the composition of the material of the lining layer 2 and the jacket 1 remains unchanged.
[0041]
The fire hose Hc is normally wound around a reel or the like while being folded flat and stored and transported. Similarly, when high-pressure water is conducted during actual use, it bulges and deforms into a circle.
[0042]
As a feature here, it may be flat in a folded state, but at least in a state where the hose Hc is expanded in actual use, both sides between the ear parts 3 and 3 bulge without being in close contact. It is to make a non-flat structure.
[0043]
On the other hand, in a conventional fire hose that is stretched in a flat state where both sides are in close contact, high pressure water must pass through the hose from the inside, and it takes time to become completely circular .
[0044]
However, in the fire hose Hc adopting the non-flat structure, both sides bulge in a stretched state, and high pressure water is passed through as it is. Therefore, there is little resistance to the hose Hc of the high-pressure water, and the hose is immediately bulged and deformed through a very rapid passage. Therefore, this fire hose Hc is excellent in so-called water permeability, which is the speed at which water can pass inside.
[0045]
Specifically, as the weft thread 1b constituting the jacket 1, an elastic fiber or elastic thread having higher elasticity than the warp thread 1a is used. For example, if a yarn in which a monofilament and a filament are twisted is used, a non-flat structure is formed in which both sides bulge by applying elastic restoring force of the weft yarn 1b when no pressure is applied or when low pressure is applied. .
[0046]
FIG. 6 shows a fire hose Hd according to the third embodiment.
The basic configuration is the same as that described above, and a new description is omitted. As a feature here, in a state where the hose Hd is flatly folded and wound around a reel or the like, the ear portions 3a and 3a along the both side end portions maintain a substantially semicircular shape, like other portions. Rigidity that does not completely adhere.
[0047]
Therefore, even if the hose Hd is extended, the ears 3a, 3a are maintained in a semicircular shape and a gap is formed inside, so that the high-pressure water immediately bulges the hose Hd into a complete circle through this gap. Deform. Such a hose Hd is also excellent in so-called water permeability, which is the speed at which water can pass inside.
[0048]
In the above embodiment, the fire fighting hoses H to Hb having the stretch promoting part 5 to enhance the stretchability and the fire fighting hoses Hc and Hd having a non-flat structure to enhance the water permeability are described separately. However, the present invention is not limited to this, and a fire hose having both of these may be used.
[0049]
【The invention's effect】
As described above, according to the present invention, the belt-like stretch promotion is achieved by twisting the warp yarns thicker than the warp yarns of other parts only at the part corresponding to the outer peripheral side when wound between the ears of the hose. Since the portion is provided, there is an effect that it is possible to obtain the easiness of stretching when the hose is stretched and the so-called stretchability of the stretched hose being straightened.
[Brief description of the drawings]
FIG. 1 is a perspective view of a fire hose according to a first embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a fire hose according to the embodiment.
FIG. 3 is a perspective view of a fire hose as a modification of the embodiment.
FIG. 4 is a perspective view of a fire hose as still another modification of the embodiment.
FIG. 5 is a perspective view of a fire hose according to a second embodiment of the present invention.
FIG. 6 is a perspective view of a fire hose according to a third embodiment of the present invention.
[Explanation of symbols]
1 ... jacket,
1a ... warp,
1b weft,
2 ... lining layer,
3 ... ears,
4a ... handle
4b ... the back,
5 ... Extension promotion department.

Claims (2)

In a fire hose in which a lining layer made of a rubber material or a synthetic resin material is fitted to the inner surface of a jacket in which warps and wefts are woven into a cylindrical shape,
The handle portion between the ear portions or the portion between the ear portions which are both end portions in a state where the hose is folded in a flat shape , and the portion corresponding to the outer peripheral side when wound on a reel or the like. the site of warp corresponding to the back portion, twisting select the thick thread than the warp at other sites, fire hose, characterized in that a stretched accelerator portion ing in woven belt having a predetermined width . 2. The fire hose according to claim 1 , wherein the expansion promoting portion is composed of a plurality of belts provided in parallel with each other over the longitudinal direction of the hose.

Images