JPH11325334A - Hose, and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To get low friction in drawing-out, and provide high friction at the time of holding by a hand. SOLUTION: In a hose 20 applied with a lining layer 24 of a synthetic resin or rubber to the inside of a jacket 23 woven with the warp 21 comprising a fiber and the weft 22 comprising a fiber into a cylindrical shape, a protrusion- like friction body 26 projected from the warp 21 is provided in a surface of the jacket 23, and the friction body 26 is formed by hot compression deformation of an adhesive layer 25 for bonding the jacket 23 to the lining layer 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jacket type hose used for, for example, firefighting.

[0002]

2. Description of the Related Art General fire hoses are required to have high durability because they are used at high pressure, and to have low flow resistance of fluid and low pressure loss. Also,
During use, the outer surface of the hose is required to have abrasion resistance in order to slide on the road surface.

[0003] A conventional jacket-type fire hose 1 is configured as shown in FIG. That is, the plain woven jacket 2 is composed of the warp yarn 3 made of fiber,
It has a plain weave configuration in which weft 4 made of fiber is woven in a tubular shape. A lining layer 5 of rubber or synthetic resin is provided inside the jacket 2. Thereby, the high-pressure water is provided so as to flow through the inside of the tubular lining layer 5 existing inside the jacket 2.

[0004]

By the way, the fire hose 1 is pulled out of a fire engine or the like at the time of fire fighting in the event of a fire, and drags the road surface to extend the hose to a target location. On the other hand, it is desired to have a configuration that has low friction and is easy to pull out.

[0005] However, the conventional fire hose 1 is easy to pull out from a fire engine or the like, but on the other hand, the reaction force generated by the high pressure water injection of the fire hose 1 is not sufficient for holding by hand. Had no problem of having no friction. For this reason, when performing a fire fighting activity using the fire hose, it is necessary to increase the holding power of the fire hose by hand, which has a problem that workability is impaired.

However, since the low friction required when pulled out is opposite to the high friction required when held by hand, it is difficult to realize a fire hose 1 having both these properties. It has become something.

The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to provide a hose which has low friction when pulled out and has high friction when held by hand, and a method of manufacturing the hose. What you want to do.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 provides a rubber or synthetic resin inside a jacket in which a warp made of fiber and a weft made of fiber are woven in a tubular shape. A hose provided with a lining layer as described above, wherein a protrusion-shaped friction body protruding from the warp is provided on the surface of the jacket.

The invention according to claim 2 is the hose according to claim 1, wherein the friction body is formed by deformation of an adhesive layer that adheres the jacket and the lining layer.

According to a third aspect of the present invention, the friction body is formed on at least one of one end and the other end in the longitudinal direction of the hose.
The hose described.

According to a fourth aspect of the invention, there is provided the hose according to the first or second or third aspect, wherein the friction body is formed in a vertical stripe shape or a horizontal stripe shape. The invention according to claim 5 is such that a rubber or synthetic resin lining layer is applied to the inside of a jacket in which a warp yarn made of fiber and a weft yarn made of fiber are woven in a cylindrical shape, and these are adhered through an adhesive layer. In the method for manufacturing a hose, a holding step of holding the surface of the jacket in a floating state so as not to come into contact with other members, and a melting point of the adhesive layer lower than the melting point of the lining layer inside the lining layer. A melt deformation step of introducing a fluid at a high temperature to melt the adhesive layer and projecting the adhesive layer on the surface of the jacket by applying pressure, and an adhesive layer projecting on the surface of the jacket in a projecting manner. Forming a friction body on the jacket surface by cooling and solidifying the friction body.

According to a sixth aspect of the present invention, in the hose according to the fifth aspect, the adhesive layer is applied to the surface of the tube, and the applied adhesive layer exudes to the jacket surface by applying pressure. It is a manufacturing method of.

According to the first aspect of the present invention, a projection-shaped friction body protruding from the warp is provided on the surface of the jacket, so that when the surface of the jacket is held, the friction is improved, so that it can be easily held by hand. Become. For this reason, workability when holding the hose is improved.

Further, since the friction body is provided so as to protrude from the jacket surface in a projecting manner, the hose comes into contact with the ground in a point-like manner. For this reason, the frictional force with the ground does not increase, and the drawability is not impaired.

According to the invention of claim 2, the friction body is
Since it is formed by the deformation of the adhesive layer that adheres the jacket and the lining layer, the structure is simplified and the friction body can be favorably formed.

According to the third aspect of the present invention, the friction body is
Since the hose is formed on at least one of the one end and the other end in the longitudinal direction, the amount of the adhesive layer required for forming the friction body can be reduced, and the friction body to the one end or the other end that normally holds the hose is provided. By this, the holding condition of the hose can be improved.

According to the invention of claim 4, the friction body is
Since it is formed in the shape of vertical stripes or horizontal stripes, the amount of the adhesive layer required for forming the friction body can be reduced. Further, since the friction body is formed to protrude from the surface of the jacket, the holding condition of the hose can be favorably maintained.

According to the fifth aspect of the present invention, it is possible to easily form a friction body on the jacket surface. In addition, since the formation of the protrusion on the jacket surface is performed while maintaining the hose surface in a floating state so as not to contact, it is possible to form the friction body without crushing the friction body on the hose surface.

According to the sixth aspect of the present invention, the adhesive layer is applied to the surface of the tube, and the partially applied adhesive layer oozes out to the jacket surface by applying pressure. The degree of freedom in manufacturing is improved, and the adhesive layer is made uniform by applying pressure, so that the adhesion between the jacket and the lining layer can be improved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The fire hose 20 shown in FIG. 2 uses a warp 21 made of a plurality of twisted polyester spun yarns, and a weft 22 made of a plurality of twisted polyester filament yarns, for example, about 45 yarns in 10 cm. The jacket 23 is formed by driving and weaving in a tubular shape. The jacket 23 is configured such that only the warp yarn 21 covers the surface. Therefore, the weft yarn 22 is basically not exposed on the surface of the jacket 23.

On the inner surface side of the jacket 23, a lining layer 24 made of a thermoplastic elastomer is provided. The lining layer 24 has a material made of, for example, a high-melting polymer elastomer. Since the lining layer 24 has an appropriate thickness, the lining layer 24 can withstand high-pressure water flowing inside.

An adhesive layer 25 is provided between the jacket 23 and the lining layer 24. This adhesive layer 2
5 is formed by applying a low-melting polymer elastomer to a predetermined thickness. The adhesive layer 25 adheres the lining layer 24 and the jacket 23.

A friction body 26 is formed on the surface of the jacket 23. The friction body 26 is provided on the surface of the jacket 23 not continuously but in a dot-like manner, for example, so as to be higher than the height of the warp 21 constituting the surface of the jacket 23. Therefore, when the hose 20 is held by hand, the friction body 26 comes into contact with the hand.

At both ends of the hose 20, cylindrical fittings 27 and 28 are provided. A method for manufacturing the hose 20 having the above configuration will be described below. In the case of manufacturing the hose 20, after forming the jacket 23, the lining layer 24 having the outer surface coated with the adhesive layer 25 is drawn into the jacket 23.

Next, in order to form a friction body 26 on the surface of the jacket 23, the jacket 23 and the tube are held in an extended state by metal fittings 27 and 28 so that the surface of the jacket 23 does not come into contact with other members. Float. Thereafter, warm water or steam is circulated inside the lining layer 24. The temperature of the hot water or steam is controlled to be lower than the melting point of the high melting point polymer elastomer and higher than the melting point of the low melting point polymer elastomer. The pressure of the hot water or steam flowing inside the lining layer 24 is also controlled to a predetermined value.

The not-shown circulation means for letting the hot water or steam flow is provided with a not-shown control means. The temperature of the hot water or steam,
It is possible to control pressure, heating time, and the like.

Instead of such control, adjustment of the melting point by selecting the material used for the adhesive layer 25, adjustment of the thickness of the adhesive layer 25, and adjustment of the weaving interval of the jacket 23 are performed. It is also possible to perform control.

As shown in FIG. 3, due to the flow of the hot water or steam, the adhesive layer 25 is melted, and the adhesive layer 25 protrudes from the gap of the jacket 23 to the surface of the jacket 23 in a projecting manner. It is formed. A large number of friction bodies 26 are formed on the surface of the jacket 23 by cooling and solidifying the protrusions formed.

According to the hose 20 having such a configuration, the friction body 26 formed on the surface of the jacket 23 comes into contact with the ground not in a plane or a line but in a point-like manner. Is provided, the friction between the hose 20 and the ground when the hose 20 is pulled out does not increase, and the hose 20 can be pulled out quickly.

Further, a friction material 26
Are protruded, so that when the hose 20 is held by hand, the friction increases and the holding property becomes good.

For this reason, it is possible to improve the workability when performing the fire extinguishing activity or the like while holding the hose 20. Further, since the friction member 26 is formed by melting and deforming the adhesive layer 25, it is not necessary to attach a separate member for forming the friction member 26, and the structure can be simplified. it can.

The formation of the friction body 26 is performed by using the adhesive layer 25.
A suitable pressure is applied at a temperature at which the metal melts, and at the same time, the surface of the jacket 23 is maintained in a floating state so as not to come into contact with the floor or the like, so that the friction body 26 can be formed satisfactorily. The friction body 26 can be formed on the surface of the jacket 23 without being crushed.

While the embodiment of the present invention has been described above, the present invention can be variously modified. This is described below. The friction body 26 is not limited to the one formed on the entire surface of the jacket 23, and may have a configuration in which the friction body 26 is formed only on one of the metal fittings 27 and 28, for example, as shown in FIG. . In this case, there is no change in the configuration in which the frictional body 26 is provided in a portion that normally holds the hose 20, so that the holding condition of the hose 20 can be improved and the portion in which the frictional body 26 is provided is reduced. Therefore, the material of the adhesive layer 25 can be reduced.

As shown in FIGS. 5A and 5B,
The friction body 26 may be formed intermittently in a vertical stripe or horizontal stripe with respect to the longitudinal direction of the hose 20. In this case, the amount of the adhesive layer 25 can be reduced,
In addition, the holding condition of the hose 20 can be improved. Further, even when the frictional bodies 26 are not formed in a vertical or horizontal stripe shape, the friction bodies 26 can be provided in various shapes as long as the holding condition of the surface of the jacket 23 is not impaired.

Further, when the frictional body 26 is formed on the surface of the jacket 23, the adhesive layer 25 is partially provided on the surface of the lining layer 24 without providing the adhesive layer 25 on the entire surface. No problem. In addition, various modifications can be made without departing from the scope of the present invention.

[0036]

As described above, according to the first aspect of the present invention, the surface of the jacket is provided with the protruding frictional member, so that when the surface of the jacket is held, the frictional force is reduced. For improvement, holding by hand becomes easy. For this reason, workability when holding the hose is improved.

Further, since the friction body is provided so as to protrude on the surface of the jacket, the hose comes into contact with the ground in a point-like manner. For this reason, the frictional force with the ground does not increase, and the drawability is not impaired.

According to the second aspect of the present invention, since the friction body is formed by deformation of the adhesive layer for bonding the jacket and the lining layer, the structure is simplified and the friction body can be formed well.

According to the third aspect of the present invention, since the friction body is formed on at least one of the one end and the other end in the longitudinal direction of the hose on the jacket surface, the adhesive layer required for forming the friction body is formed. The amount of the hose can be reduced, and the holding condition of the hose can be improved by forming a frictional body at one end or the other end that normally holds the hose.

According to the fourth aspect of the present invention, since the friction member is formed on the surface of the hose in the form of vertical stripes or horizontal stripes, the amount of the adhesive layer required for forming the friction member can be reduced. it can. Further, since the friction body is formed to protrude from the surface of the jacket, the holding condition of the hose can be favorably maintained.

According to the fifth aspect of the present invention, it is possible to easily form a friction body on the jacket surface.
In addition, since the formation of the protrusion on the jacket surface is performed while maintaining the surface of the hose in a floating state so as not to come into contact with the surface of the hose, the friction body can be formed on the surface of the hose without being crushed.

According to the sixth aspect of the present invention, the adhesive layer is applied to the surface of the tube, and the applied adhesive layer oozes out to the jacket surface by applying pressure. In addition, the degree of freedom can be improved, and the adhesive layer can be made uniform by applying pressure to improve the adhesion between the jacket and the lining layer.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the shape of a hose according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the shape of the hose according to the embodiment.

FIG. 3 is a process chart showing a method for manufacturing a hose according to the embodiment.

FIG. 4 is a perspective view showing the shape of a hose provided with a friction body near a fitting and a connection fitting according to a modification of the present invention.

5A and 5B are perspective views showing the shape of a hose according to a modified example of the present invention, in which FIG. 5A shows a state in which a frictional body is provided in a vertical stripe shape, and FIG.

FIG. 6 is a sectional view showing the shape of a conventional hose.

[Explanation of symbols]

 Reference Signs List 20 hose 21 warp 22 weft 23 jacket 24 lining layer 25 adhesive layer 26 friction body 27 fitting 28 fitting

Claims (6)

[Claims] 1. A hose in which a rubber or synthetic resin lining layer is applied to the inside of a jacket in which a warp made of fiber and a weft made of fiber are woven in a cylindrical shape, a projection projecting from the warp on the surface of the jacket. A hose provided with a friction member in a shape of a circle. 2. The hose according to claim 1, wherein the friction body is formed by deformation of an adhesive layer that adheres the jacket and the lining layer. 3. The hose according to claim 1, wherein the friction body is formed on at least one of one end and the other end in the longitudinal direction of the hose. 4. The hose according to claim 1, wherein the friction body is formed in a vertical stripe shape or a horizontal stripe shape. 5. A method of manufacturing a hose in which a rubber or synthetic resin lining layer is applied to the inside of a jacket in which a warp yarn made of fiber and a weft yarn made of fiber are woven in a cylindrical shape, and these are bonded via an adhesive layer. In the method, a holding step of holding the surface of the jacket in a floating state so as not to come into contact with another member, and a temperature lower than the melting point of the lining layer and higher than the melting point of the adhesive layer inside the lining layer. Melts the adhesive layer by introducing a fluid of the type described above, and a melt deformation step of projecting the adhesive layer on the surface of the jacket by applying pressure, and cooling and solidifying the adhesive layer projecting on the surface of the jacket. And forming a friction body on the surface of the jacket. 6. The method for producing a hose according to claim 5, wherein the adhesive layer is applied to the surface of the tube, and the applied adhesive layer exudes to the jacket surface by applying pressure.