JPH0454389Y2 - - Google Patents

Description

[Detailed explanation of the idea]

INDUSTRIAL APPLICATION FIELD The present invention relates to the structure of a hose formed by forming an airtight film layer on the inner surface of a woven jacket. This relates to the structure of the reel hose. Conventional technology As a conventional hose of this type, the
The one described in Publication No. 38087 is known.
As shown in FIG.
and threads 8 of natural or synthetic fibers are alternately woven as weft threads and woven into a cylindrical shape to form a jacket 1, and an airtight lining 2 made of rubber or synthetic fibers is provided on the inner or outer surfaces of the jacket 1. It is an excellent hose that is lightweight and flexible, and allows water to flow through it while being wound on a reel. Problems to be Solved by the Invention However, in this type of hose, rigid linear bodies 7 made of wire or synthetic resin and synthetic fiber threads 8 are alternately woven into the weft of the jacket 1, so that unevenness on the inner surface may occur. The problem was that the pressure loss was large. In order to solve this problem, Japanese Patent Application Laid-Open No. 106787/1983 proposes a lining made of a flexible cylindrical fabric with an airtight layer made of rubber or synthetic resin formed on the inner surface of the jacket. , a hose is described in which a cylindrical fabric and a jacket are bonded to the inner surface of the jacket only at the tops of convex portions of irregularities, or a cylindrical fabric and a jacket are bonded with an extremely flexible adhesive. However, this hose is complicated and difficult to manufacture, and is expensive, so it has not been put into practical use. The present invention was developed in view of the above circumstances, and it is an object of the present invention to provide a hose that has small irregularities on its inner surface and can be wound with a small radius of curvature. Means for Solving the Problems Accordingly, the present invention uses a rigid linear body made of wire or synthetic resin for at least a part of the front weft, uses a synthetic fiber yarn as the back weft, and A jacket made by weaving weft and warp yarns into a cylindrical shape with at least a double weave structure, and an airtight film layer made of rubber or synthetic resin is formed on at least the inner surface of the jacket. It is. FIG. 1 shows the hose of the present invention. 1
This jacket is made by weaving warp and weft yarns, and has a synthetic resin coating layer 2 formed on its inner surface. The jacket 1 is woven with a double layered structure or a cored weft double weave structure. 2 and 3 show a jacket 1 in an embodiment of the hose of the present invention, and the jacket 1 is woven with a cored weft double weave structure. FIG. 2 is a longitudinal sectional view, and FIG. 3 is a surface view. In FIGS. 2 and 3, 3 is the front weft, and 4 is the back weft. 5 is the warp thread, 6
is the core warp yarn. In this structure, the front weft 3 and the back weft 4 are arranged on the outside and inside of the core warp yarn 6, respectively, and the warp 5 is woven through the front weft 3 and the back weft 4. Therefore, in the present invention, a rigid cotton-like body made of synthetic resin such as wire or nylon brittle is used as the front weft 3, and a normal synthetic fiber thread such as polyester or nylon is used as the back weft 4. be done. In addition, as the front weft thread 3, it is also possible to use the above-mentioned wire or flocculent body of synthetic fiber and synthetic fiber thread, which are aligned. In this structure, as shown in FIG. 2, the front weft 3 and the back weft 4 are connected to the jacket 1
The front weft 3 and the weft 4 can be located at the same position in the thickness direction within the tissue. In addition, in the present invention, the jacket 1 can be constructed by the front weft 3, the back weft 4, and the warp 5, without arranging the core warp 6 as described above. Further, FIGS. 4 and 5 show a jacket 1 in another example of the hose of the present invention,
The jacket 1 is woven with a double layer structure. In this structure, the front warp yarns 5a and the front weft yarns 3 are woven in a plain weave weave to constitute the front weave, and the back warp yarns 5b and the back weft 4 are woven in a plain weave weave to constitute the back weave. There is. Thus, the front texture and the back texture are overlapped and exist on the front and back sides of the jacket 1. Note that the front weave and the back weave are connected by the front warp yarn 5a or the back warp yarn 5.
It can also be partially bound by either one of b) or by another binding thread. In this specification, a weft double weave structure refers to a structure in which the weft threads constituting the jacket are arranged in two stages in the thickness direction of the jacket, and is a double weave structure in terms of textile structure. does not necessarily match. For example, FIGS. 2 and 3 above.
If the core warp yarn 6 is removed from the structure shown in the figure, it is a warp ridge weave structure, and the core warp yarn 6 is passed between two parallel weft yarns in the warp ridge weave structure, and the two weft yarns are It is divided into two stages in the thickness direction to form a front weft 3 and a back weft 4, and although it cannot be called a cored weft double weave structure in the strict sense of textile structure, in the present invention. It also includes such organizations. Function In the hose shown in FIGS. 2 and 3 of the present invention, the front weft 3 and the back weft 4 are arranged on the front and back sides of the jacket 1, respectively, and are made of rigid wire or synthetic resin. The shaped body is placed on the front surface of the jacket 1, and the synthetic fiber yarn is placed on the back surface of the jacket 1. Therefore, on the back side, the back weft 4 of the synthetic fiber yarn is woven with the warp 5 and the core warp 6 and flattened to form a smooth coating layer 2 with few irregularities. Furthermore, in the hose shown in FIGS. 4 and 5 of the present invention, on the back side of the jacket 1, the back warp yarns 5b and the back weft yarns 4 made of synthetic fiber yarns are woven to form the back weave. The back weft 4 of the synthetic fiber yarn is flattened by the back warp 5b,
A smooth film layer 2 with few irregularities can be formed. In addition, in the present invention, since the front weft thread 3 and the back weft thread 4 are located at the same position in the thickness direction of the jacket 1, the conventional stiff linear body of wire or synthetic resin and the synthetic fiber When compared to a jacket made of yarn alternately woven in the length direction,
Even if the number of weft threads is the same, the distance between the weft threads becomes larger, resulting in a hose that is flexible and has a small radius of curvature. Example As an example of the present invention, the following configuration has an inner diameter of 32 mm.
mm hose was manufactured. Example 1 As the warp yarn, 2 yarns made of 8 20 count polyester spun yarns were tied together and 85 yarns were used, and as the core warp yarn, 2 yarns of 1000 d polyester long fiber yarn were twisted together. 85
I used this book. Nylon blitzle with a diameter of about 2.0 mm was used as the front weft, and a yarn consisting of four 1500 d polyester long fiber yarns twisted together was used as the back weft. This front warp thread and back warp thread are each 10 cm.
He hit 38 shots in between. The warp and core warp yarn, front weft yarn and back weft yarn are woven into a cylindrical shape with a cored horizontal double weave structure to form a jacket, and a synthetic resin film layer with a thickness of 0.4 mm is formed on the inner surface of the jacket. , got a hose. Comparative example 1 8 pieces of 20 count polyester spun yarn were used as the warp yarn.
A total of 168 strands of two twisted yarns were used.
In addition, as the weft, we used a nylon bristle with a diameter of 2 mm and a yarn made by twisting four 1500 d polyester long fiber yarns, and weaved 38 nylon bristle and polyester long fiber yarns into a 10 cm space at the same time. is. The warp and weft yarns were woven into a cylindrical plain weave structure to form a jacket, and a 0.4 mm synthetic resin film layer was formed on the inner surface of the jacket. Performance Test The following performance tests were conducted on the hoses of the above Examples and Comparative Examples. Pressure loss test A water discharge nozzle with an inner diameter of 10 mm was attached to one end of a 10 m long hose, and when water was supplied from the other end at a rate of 200/min, the pressure difference between the water supply side and the water discharge side was measured. Minimum bending radius A hose with a length of approximately 1 m was bent by hand to form a loop, and the limit bending radius that would cause a kink was measured. Test Results The results of the above tests were as shown in the table on the next page.

[Table] Effects of the invention It can be seen that according to the invention, the pressure loss during water flow is extremely small. Furthermore, the hose is flexible and can be wound around a wreath or the like with a small radius of curvature, allowing the hose to be stored compactly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the hose of the present invention. Second
3 and 3 show one embodiment of the present invention, FIG. 2 is an enlarged vertical sectional view of the hose, and FIG. 3 is a surface view showing the structure of the jacket. 4 and 5 show an embodiment of the present invention, in which FIG. 4 is an enlarged longitudinal sectional view of the hose, and FIG. 5 is a surface view showing the structure of the jacket. FIG. 6 is a longitudinal sectional view showing a jacket of a conventional reel hose. 1... Jacket, 2... Film layer, 3... Front weft, 4... Back weft, 5... Warp.

Claims (1)

[Scope of utility model registration request] A rigid linear body made of wire or synthetic resin is used for at least a part of the front weft, a synthetic fiber yarn is used as the back weft, and the front weft, the back weft, and the warp are interwoven with at least a double weft structure. 1. A reel hose, characterized in that it is woven into a jacket to form a jacket, and an airtight film layer made of rubber or synthetic resin is formed on at least the inner surface of the jacket.