JP2004190836A - Double jacket hose - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight and flexible double jacket hose hardly having twist. <P>SOLUTION: This double jacket hose comprises an outer tube jacket formed by weaving warp with weft, an inner cylindrical jacket 14 installed in the outer tube jacket 13 and formed by weaving warp with weft, and a lining layer formed on the inside of the inner tube jacket 14. After one piece of weft 17 is woven with the warp 15 of the outer tube jacket 13 by a shuttle in synchronism with the opening of the warp 15 of the outer tube jacket 13 and the weft of the inner tube jacket 14 by a heddle, the weft is woven with the warp 16 of the inner tube jacket 14, and then repeatedly woven with the warp 15 of the outer tube jacket 13 to join the outer tube jacket 13 to the inner tube jacket through one piece of weft 17. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a double jacket hose used for a fire hose, a snow machine hose, and the like.
[0002]
[Prior art]
Generally, fire hoses are used at a high pressure, and thus are required to have pressure resistance. In use, the hose is required to have abrasion resistance on the outer surface because the hose is dragged violently. Therefore, to satisfy these requirements, a double jacket hose having a double structure of an outer cylinder jacket and an inner cylinder jacket and a rubber or synthetic resin lining layer provided inside the inner cylinder jacket is known.
[0003]
This double jacket hose is, for example, an outer cylinder in which a lining layer is applied to the inside of an inner cylinder jacket in which a warp and a weft made of fibers are woven in a tubular shape, and the inner cylinder jacket is woven in a tubular shape with a warp and a weft made of fibers. It is constructed by drawing inside the jacket.
[0004]
[Problems to be solved by the invention]
Therefore, the conventional double jacket hose has a configuration in which the outer cylinder jacket and the inner cylinder jacket are independent. Therefore, when used as a fire hose, when high pressure is applied to the inner cylinder jacket, twisting occurs in the direction opposite to the weft weaving direction, and this torsion generates rotational force at the tip of the cylinder, hindering firefighters from holding the water discharge nozzle. Had the problem of causing There is also a problem that the hose is meandered due to the twist and the pressure loss is increased.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to prevent the inner cylinder jacket from being twisted even when high pressure is applied, to reduce pressure loss, and to reduce the flexibility and weight. It is to provide a double jacket hose which can achieve the above.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides an outer tubular jacket woven with a warp and a weft, and an inner tubular jacket provided inside the outer tubular jacket and woven with a warp and a weft. And a lining layer provided on the inner side of the inner cylinder jacket, a shuttle synchronizes with the opening of the warp thread of the outer cylinder jacket and the warp thread of the inner cylinder jacket by opening the warp thread of the weaving machine. After wefting the weft with the warp of the outer jacket, weaving with the warp of the inner jacket, and again weaving with the warp of the outer jacket, the outer jacket and the inner jacket are covered with one weft. It is characterized by being combined.
[0007]
A second aspect of the present invention is characterized in that the point at which the one weft yarn of the first aspect shifts from the inner cylinder jacket to the outer cylinder jacket is alternately positioned on the left and right with respect to the center of the tubular jacket.
[0008]
A third aspect of the present invention is characterized in that the point at which the one weft yarn of the first aspect transfers from the inner cylinder jacket to the outer cylinder jacket is located at the abdomen of the hose.
[0009]
According to a fourth aspect of the present invention, in addition to the warp yarns constituting the outer cylinder jacket and the inner cylinder jacket of claim 1, a plurality of entangled warp yarns are arranged in the circumferential direction of the jacket, and the entangled warp yarns are disposed in the outer cylinder jacket and the inner cylinder jacket. The outer tube jacket and the inner tube jacket are combined by weaving with a weft thread.
[0010]
A fifth aspect is characterized in that the outer cylinder jacket and the inner cylinder jacket of the first aspect are woven with different weaving specifications.
[0011]
According to a sixth aspect of the present invention, the different weaving specifications of the fifth aspect are characterized in that the inner cylinder jacket is a 1/2 tri-layer weave and the outer cylinder jacket is a 2/3 tri-layer weave.
[0012]
A seventh aspect of the present invention is characterized in that the different weaving specifications of the fifth aspect are the number and / or thickness of the warp yarns and both.
[0013]
The eighth aspect of the present invention is characterized in that the different weaving specifications of the fifth aspect are the material of the warp yarn or the weft yarn and both.
[0014]
A ninth aspect of the present invention provides an outer cylinder jacket woven with a warp yarn and a weft yarn, an inner cylinder jacket woven with a warp yarn and a weft yarn provided inside the outer cylinder jacket, and a lining provided inside the inner cylinder jacket. In a double jacket hose composed of two layers, the outer tube jacket and the inner tube jacket are woven with one weft for the warp yarns, and the outer tube jacket and the inner tube jacket are joined by the weft yarn. And
[0015]
According to the above configuration, the outer cylinder jacket and the inner cylinder jacket can be simultaneously woven, and the outer cylinder jacket and the inner cylinder jacket can be connected by one weft thread. Moreover, when the internal pressure is applied, the tension is applied only to the weft portion of the inner cylinder jacket, that is, every other wheel, so that no twisting occurs.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
1 to 3 show a first embodiment, FIG. 1 is a schematic diagram of a flat quadruple woven weave forming a tubular jacket of a double jacket hose, FIG. 2A is a cross-sectional view of a double jacket hose, (B) is an enlarged sectional view of a portion A, FIG. 3 is an explanatory view of a flat quadruple weaving fabric for weaving a tubular jacket, (a) is a headle process diagram, (b) is a shuttle process diagram, (c) ) Is a longitudinal sectional view.
[0018]
First, the configuration of the tubular jacket 12 of the double jacket hose 11 will be described. The tubular jacket 12 includes an outer tubular jacket 13 and an inner tubular jacket 14.
[0019]
A plurality of warp yarns 15 of the outer jacket 13 are arranged at equal intervals in the circumferential direction of the tubular jacket 12, and each is supported by a head (not shown) of the loom. The plurality of warp yarns 16 of the inner cylinder jacket 14 are also arranged at equal intervals in the circumferential direction of the cylindrical jacket 12, and are each supported by a head.
[0020]
The warp yarn 15 of the outer tube jacket 13 and the warp yarn 16 of the inner tube jacket 14 are single weft yarns 17, and the leading end thereof is supported by a shuttle (not shown) of the loom. The single weft yarn 17 is woven with the warp yarn 15 of the outer cylinder jacket 13 and is woven with the warp yarn 16 of the inner cylinder jacket 14 to form the tubular jacket 12.
[0021]
Next, a procedure for weaving the tubular jacket 12 will be described with reference to FIGS. The warp yarns 15 of the outer tube jacket 13 and the warp yarns 16 of the inner tube jacket 14 are independently opened by a headle so that the warp yarns 15a and 15b and the warp yarns 16a and 16b cross each other. In synchronization with this opening, one weft yarn 17 is woven with the warp yarns 15a and 15b of the outer jacket 13 in accordance with the process sequence shown in FIG. 1 by (1), (2), (3),. 1)) Thereafter, weaving with the warp yarns 16a and 16b of the inner cylinder jacket 14 (steps 2 and 3) and weaving with the warp yarns 15a and 15b of the outer cylinder jacket 13 again (steps 4 and 5) are repeated. .
[0022]
In FIGS. 3A and 3B, 1 is a front face of the outer cylinder jacket (upper side when the jacket is crushed and laid flat), and 2 "una" is a back face of the inner cylinder jacket. (Lower side when placed in the same manner), "Ona" of 3 represents the table of the inner cylinder jacket, and "Ura" of 4 represents the back of the outer cylinder jacket. Further, “KARAMI” represents “connection” for connecting the inner cylinder jacket and the outer cylinder jacket, and there is no “connection” in the present embodiment. The present embodiment is a case where the point at which the weft yarn moves is alternately left and right.
[0023]
Accordingly, the warp yarn 15 and the weft yarn 17 are woven to form the outer cylinder jacket 13, and the warp yarn 16 and the weft yarn 17 are woven to form the inner cylinder jacket 14. Further, by weaving one weft 17 alternately with the warp 15 of the outer jacket 13 and the warp 16 of the inner jacket 14, the outer jacket 13 and the inner jacket 14 are joined by one weft 17, It becomes an integral structure.
[0024]
The point at which one weft yarn 17 transfers from the inner cylinder jacket 14 to the outer cylinder jacket 15 is set to alternate left and right positions with the center of the cylindrical jacket 12 interposed therebetween. The upper and lower central portions when the jacket 12 is folded flat. This embodiment corresponds to the third embodiment.
[0025]
The material of the warp yarn 15 of the outer cylinder jacket 13 is, for example, a high elongation yarn (nylon fiber), and the material of the warp yarn 16 of the inner cylinder jacket 14 is, for example, a low elongation yarn (polyester fiber). The elongation of 12 can be suppressed by the inner cylinder jacket 14, and wear can be suppressed by the outer cylinder jacket 13. Further, the warp yarn of the outer jacket 13 may be a heat-resistant yarn (aramid fiber).
[0026]
Although the warp yarns 15 and 16 are made of different fibers, they may be made of the same material, or may be spun yarns or filaments, and can be appropriately changed depending on the purpose of use.
[0027]
The double jacket hose 11 is completed by applying a lining layer 18 made of rubber or synthetic resin to the inner peripheral surface of the inner tubular jacket 14 of the tubular jacket 12 thus configured by a known means. Further, when the double jacket hose 11 is used as a fire hose and an internal pressure is applied by water pressure, tension is applied only to the weft 17 portion of the inner cylinder jacket 14, that is, every other wheel, so that no twisting occurs.
[0028]
Here, the twist of the weft of the inner cylinder jacket when the internal pressure is applied by water pressure using a double jacket hose as a fire hose will be described by comparing the conventional and the present invention. FIG. 4A shows an inner cylinder jacket of a conventional double jacket hose, and FIG. 4B shows an inner cylinder jacket and an outer cylinder jacket of the double jacket hose of the present invention.
[0029]
As shown in FIG. 4 (a), the inner cylinder jacket of the conventional double jacket hose focuses on the direction of the force at points A to D of the weft yarn. At point A, the point A is large in the L direction and the R direction is minute. Yes, the resultant force is in the L direction. Similarly, focusing on points B, C, and D, at point B, it is large in the L direction, small in the R direction, and the resultant force is in the L direction. At point C, it is small in the L direction, large in the R direction, and the resultant is in the R direction. At point D, the L direction is minute, the R direction is large, and the resultant force is the R direction.
[0030]
Therefore, in the conventional inner jacket of a double-jacket hose, the forces at points A and B are in the L direction, and the forces at points C and D are in the R direction. Problem.
[0031]
As shown in FIG. 4 (b), the inner cylinder jacket of the double jacket hose according to the present invention focuses on the direction of the force at the points a to d of the weft yarn. And the resultant force is in the l direction. Similarly, focusing on points b, c, and d, at point b, the direction is minute in the direction l, the direction r is large, and the resultant force is the direction r. At the point c, the direction is large in the direction l, the direction r is minute, and the resultant force is the direction l. At the point d, the direction l is minute, the direction r is large, and the resultant force is the direction r.
[0032]
Therefore, in the inner jacket of the double jacket hose according to the present invention, the directions of the forces at points a to d become l, r, l, r in order, and the direction of the tension is reversed every other wheel, so that no twisting occurs.
[0033]
FIG. 5 shows the second embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted. FIGS. 5A and 5B are explanatory views of a flat quadruple plait weaving weaving a tubular jacket, wherein FIG. 5A is a process diagram of a headle, FIG. 5B is a process diagram of a shuttle, and FIG. 5C is a longitudinal sectional view.
[0034]
In FIGS. 5A and 5B, 1 is a front face of the outer cylinder jacket (upper side when the jacket is crushed flat) and 2 una is a back face of the inner cylinder jacket. (Lower side when placed in the same manner), "Ona" of 3 represents the table of the inner cylinder jacket, and "Ura" of 4 represents the back of the outer cylinder jacket. Further, "KARAMI" represents "connection" for connecting the inner cylinder jacket and the outer cylinder jacket.
[0035]
In this embodiment, in addition to the warp yarns 15 and 16 constituting the outer cylinder jacket 13 and the inner cylinder jacket 14, as shown by a broken line in FIG. The entangled warp yarns 19 are interwoven with the weft yarns 17 of the outer jacket 13 and the inner jacket 14 to connect the outer jacket 13 and the inner jacket 14. This embodiment corresponds to the fourth embodiment.
[0036]
By weaving the entangled warp yarn 19 with the weft yarn 17 of the outer cylinder jacket 13 and the inner cylinder jacket 14, the outer cylinder jacket 13 and the inner cylinder jacket 14 can be more firmly joined.
[0037]
FIG. 6 shows a third embodiment, in which the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. FIGS. 6A and 6B are explanatory diagrams of a flat quadruple-ear entangled weaving fabric for forming a tubular jacket, wherein FIG. 6A is a headle process diagram, FIG. 6B is a shuttle process diagram, and FIG. 6C is a longitudinal sectional view.
[0038]
In FIG. 6A and FIG. 6B, 1 “front” is the front of the outer cylinder jacket (upper side when the jacket is crushed flat) and 2 “una” is the back of the inner cylinder jacket ( (Lower side when placed in the same manner), "Ona" of 3 represents the table of the inner cylinder jacket, and "Ura" of 4 represents the back of the outer cylinder jacket. Further, "KARAMI" represents "connection" for connecting the inner cylinder jacket and the outer cylinder jacket.
[0039]
In this embodiment, in addition to the warp yarns 15 and 16 constituting the outer jacket 13 and the inner jacket 14, as shown by the broken line in FIG. The entangled warp yarns 19 are interwoven with the weft yarns 17 of the outer jacket 13 and the inner jacket 14 to connect the outer jacket 13 and the inner jacket 14.
[0040]
By weaving the entangled warp 19 with the weft 17 of the outer cylinder jacket 13 and the inner cylinder jacket 14, the outer cylinder jacket 13 and the inner cylinder jacket 14 can be more firmly connected.
[0041]
Further, in each of the above-described embodiments, the case where the outer jacket 13 and the inner jacket 14 are each plain-woven has been described. However, the weaving specification is not limited to the plain weaving, and is not limited to the plain weave. Alternatively, it may be a 2/1 triangular weave. Further, the number and thickness of the warp yarn 17 and the entangled warp yarn 19 can be appropriately changed depending on the purpose of use.
[0042]
【The invention's effect】
As described above, according to the present invention, the outer jacket and the inner jacket can be woven simultaneously, and the outer jacket and the inner jacket can be connected by one weft. Therefore, it is possible to provide a lightweight and flexible double jacket hose, and furthermore, there is an effect that almost no torsion occurs and the pressure loss can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a flat quadruple woven weave forming a tubular jacket of a double jacket hose showing a first embodiment of the present invention.
FIGS. 2A and 2B show the same embodiment, in which FIG. 2A is a cross-sectional view of a double jacket hose, and FIG.
3A and 3B show a weaving process of the tubular jacket according to the embodiment, wherein FIG. 3A is a process diagram of a headle process, FIG. 3B is a process diagram of a shuttle process, and FIG.
FIG. 4A is a schematic view showing an inner cylinder jacket of a conventional double jacket hose, and FIG. 4B is a schematic view showing an inner cylinder jacket of the double jacket hose of the present invention.
FIGS. 5A and 5B show steps of weaving a tubular jacket according to a second embodiment of the present invention, wherein FIG. 5A is a process diagram of a headle process, FIG. 5B is a process diagram of a shuttle process, and FIG.
FIGS. 6A and 6B show a process of weaving a tubular jacket according to a third embodiment of the present invention, wherein FIG. 6A is a process diagram of a headle process, FIG. 6B is a process diagram of a shuttle process, and FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Double jacket hose 12 ... Cylindrical jacket 13 ... Outer cylinder jacket 14 ... Inner cylinder jacket 15, 16 ... Warp yarn 17 ... Weft yarn 18 ... Lining layer

Claims (9)

An outer cylinder jacket woven with warp and weft yarns, an inner cylinder jacket provided inside the outer cylinder jacket, woven with warp and weft yarns, and a lining layer provided on the inner side of the inner cylinder jacket. In the jacket hose,
After wefting one weft with the warp of the outer jacket by the shuttle in synchronism with opening the warp of the outer jacket and the warp of the inner jacket by the head of the loom, the warp of the inner jacket is A double-jacketed hose, wherein the outer jacket and the inner jacket are joined by a single weft thread by repeating weaving and weaving with the warp of the outer jacket again. 2. The double jacket hose according to claim 1, wherein a point at which the one weft is transferred from the inner jacket to the outer jacket is alternately positioned on the left and right sides of the center of the tubular jacket. 2. The double jacket hose according to claim 1, wherein a point at which the one weft thread transfers from the inner cylinder jacket to the outer cylinder jacket is an abdomen of the hose. In addition to the warp yarns constituting the outer cylinder jacket and the inner cylinder jacket, a plurality of tangled warp yarns are arranged in the circumferential direction of the jacket, and the entangled warp yarns are woven with the weft yarns of the outer cylinder jacket and the inner cylinder jacket to form the outer cylinder jacket and the inner cylinder. 2. The double jacket hose according to claim 1, wherein the double jacket hose is connected to a tubular jacket. 2. The double jacket hose according to claim 1, wherein the outer tube jacket and the inner tube jacket are woven with different weaving specifications. 6. The double jacket hose according to claim 5, wherein in the different weaving specifications, the inner cylinder jacket is a 1/2 three-layer oblique weave and the outer cylinder jacket is a 2/1 three-layer oblique weave. The double jacket hose according to claim 5, wherein the different weaving specifications are the number and / or thickness of the warp yarns. The double jacket hose according to claim 5, wherein the different weaving specifications are the material of the warp yarn or the weft yarn and both. An outer cylinder jacket woven with warp and weft yarns, an inner cylinder jacket provided inside the outer cylinder jacket, woven with warp and weft yarns, and a lining layer provided on the inner side of the inner cylinder jacket. In the jacket hose,
A double jacket hose, wherein the outer jacket and the inner jacket are woven with one weft for a warp constituting the outer jacket and the inner jacket, and the outer jacket and the inner jacket are connected with the weft.

Images