hose

Abstract

To provide a hose that enables efficient manufacturing processes. According to an embodiment, the hose includes a jacket including at least one weft thread and a plurality of warp threads, and a lining layer provided on the inside of the jacket, and at least one of the plurality of warp threads is transparent.

Description

Technical Field

[0001] The present invention relates to a hose including a jacket woven from at least one weft yarn and a plurality of warp yarns.

Background Art

[0002] Conventionally, a hose has been known that includes a jacket woven from at least one weft yarn and a plurality of warp yarns, and a lining layer covering the inner surface of the jacket.

[0003] As an example of such a hose, a fire hose can be mentioned. Generally, a fire hose having a jacket based on white is often used. However, due to various reasons such as identification of the deployment location and deployment year of the fire hose, a colored fire hose may be required.

[0004] A fire hose is generally woven with approximately several hundred warp yarns and several weft yarns. For the warp yarns, white-based spun yarns or multifilaments are used. Most of the weft yarns are covered by the warp yarns and cannot be visually recognized from the outside.

[0005] Currently, as methods for manufacturing a colored fire hose, there are a first method of coloring the jacket in a separate process after manufacturing a fire hose having a white jacket, and a second method of using colored warp yarns in the process of weaving the jacket.

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the above first method, it is common to pass the fire hose through a paint for coloring. In this case, in addition to the normal manufacturing process of the fire hose, a process for coloring is required, and the manufacturing cost of the fire hose can increase significantly.

[0007] In the second method described above, in order to manufacture a fire hose of the required color, it is necessary to replace a huge number of warp threads set on the loom for each hose. Since this work is time-consuming, the manufacturing cost of the fire hose also increases accordingly.

[0008] In addition to these, there are various problems in the manufacturing process of conventional fire hoses. Also, these problems can occur similarly in hoses for uses other than fire fighting. Therefore, one of the objects of the present invention is to provide a hose capable of improving the efficiency of the manufacturing process. Other objects of the present invention will become apparent from the following description.

Means for Solving the Problems

[0009] A hose according to an embodiment includes a jacket including at least one weft thread and a plurality of warp threads, and a lining layer provided inside the jacket. Further, at least one of the plurality of warp threads is transparent. The transparent warp thread can be formed of, for example, a monofilament.

[0010] In one embodiment, the weft thread is non-transparent. The weft thread may be colored in a color other than white. The weft thread may be colored with a phosphorescent material or a reflective material. Also, the jacket may include a plurality of weft threads of different colors. Further, a stripe pattern visible through the transparent warp thread may be formed by the weft thread.

[0011] As another example, the weft thread may be transparent. In this case, the lining layer may be visible through the transparent warp thread and the transparent weft thread.

[0012] The plurality of warp threads may include a transparent warp thread and a non-transparent warp thread. In this case, a straight pattern or a broken line pattern along the length direction of the hose may be formed by the non-transparent warp thread.

Effects of the Invention

[0013] For example, according to the present invention, it is possible to provide a hose capable of improving the efficiency of the manufacturing process.

Brief Description of the Drawings

[0014]

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Embodiments for Carrying Out the Invention

[0015] Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view schematically showing a part of a hose 1 according to the present embodiment. The hose 1 is, for example, a fire hose. In this case, elements such as connectors for connecting flow paths and nozzles for discharging water are attached to both ends of the hose 1. The connector for connecting the flow path may be, for example, a fitting for connecting to a water supply source such as a fire hydrant or a fire truck, or a fitting for connecting to another hose. Note that the configuration of the hose 1 disclosed in the present embodiment can be applied to various hoses such as a hose connected to a drainage pump, a hose for supplying industrial water, or a hose for supplying agricultural water.

[0016] The hose 1 shown in FIG. 1 includes a jacket 2 and a lining layer 3 that covers the inner surface of the jacket 2. The jacket 2 is woven with at least one cross yarn P and a large number of warp yarns Q. The cross yarn P has a spiral shape in which loops extending in the circumferential direction θ of the hose 1 are continuous in the length direction X of the hose 1. The warp yarn Q extends in the length direction X. The lining layer 3 can be formed of, for example, a synthetic resin or rubber.

[0017] The hose 1 may be flattened, for example, as shown in the drawing. Further, the jacket 2 may have, for example, a straight pattern 20 or a broken line pattern 21 formed in the belly portion in a flattened state.

[0018] In the present embodiment, most of the jacket 2 has a color other than white (base color). Further, the straight pattern 20 and the broken line pattern 21 have colors different from this base color.

[0019] Examples of the weaving method of the jacket 2 include plain weave and twill weave. Hereinafter, the detailed configuration of the jacket 2 will be described by taking the case where plain weave and twill weave are respectively applied to the jacket 2 as an example.

[0020] FIG. 2 is a schematic plan view of the jacket 2 woven by plain weave. FIG. 3 is a schematic cross-sectional view of the hose 1 including the jacket 2 woven by plain weave.

[0021] In FIG. 2, the plurality of bands marked with dot patterns represent loops L of the helical horizontal thread P. These loops L may be formed by a single horizontal thread P or may be formed by a plurality of horizontal threads P. The plurality of bands intersecting the loops L represent the vertical threads Q. In FIG. 2, for ease of understanding, relatively large gaps are provided between adjacent loops L and between adjacent vertical threads Q.

[0022] In the example of FIG. 2, each loop L of the horizontal thread P alternately passes above and below the vertical threads Q arranged in the circumferential direction θ. Also, in the examples of FIGS. 2 and 3, each vertical thread Q alternately passes above and below the loops L arranged in the length direction X.

[0023] In the present embodiment, the horizontal thread P is colored with the above-described base color. Also, each vertical thread Q is transparent. Here, "transparent" means that the color of the element below can be visually recognized through the vertical thread Q under sunlight or lighting, and includes a so-called semi-transparent state. That is, in the present embodiment, the color of the horizontal thread P can be visually recognized through the vertical thread Q.

[0024] For the horizontal thread P, for example, a spun yarn, multifilament, or monofilament colored with the base color can be used. On the other hand, for the vertical thread Q, for example, a transparent monofilament can be used, but other types of wire materials may be used as long as transparency can be ensured. The materials of the above-mentioned spun yarn, multifilament, and monofilament are not particularly limited, but in one example, nylon or polyester can be used.

[0025] Note that spun yarns and multifilaments have a structure in which a large number of thin threads are twisted together. Therefore, when not colored in a specific color, these spun yarns and multifilaments appear white due to the refraction and reflection of light occurring on the surfaces of the large number of threads.

[0026] In the example of FIG. 3, a lining layer 3 is closely attached to the inner surface of the jacket 2. Concavities and convexities resulting from the shape of the jacket 2 are formed on the inner surface of the lining layer 3. The lining layer 3 may be adhered to the inner surface of the jacket 2 with an adhesive.

[0027] In the actual jacket 2 woven in plain weave, the upper surface of the weft thread P is entirely covered by the warp thread Q. That is, the weft thread P is not exposed to the outside, and when the warp thread Q is not transparent, the weft thread P can hardly be visually recognized.

[0028] On the other hand, if the warp thread Q is transparent as in the present embodiment, it is possible to visually recognize the weft thread P from the outside. Thereby, the jacket 2 or the hose 1 appears to be the base color of the weft thread P as a whole.

[0029] FIG. 4 is a schematic plan view of the jacket 2 woven in twill weave. FIG. 5 is a schematic cross-sectional view of the hose 1 including the jacket 2 woven in twill weave.

[0030] Similar to FIG. 2, in the example of FIG. 4, dot patterns are added to the loops L of the spiral weft thread P. Also, relatively large gaps are provided between adjacent loops L and between adjacent warp threads Q for easy understanding.

[0031] In the example of FIG. 4, each loop L of the weft thread P alternately passes under two warp threads Q and above one warp thread Q. Also, in the examples of FIGS. 4 and 5, each warp thread Q alternately passes above two loops L and below one loop L. The configuration of the twill weave weft thread P and warp thread Q is not limited to this example. For example, the warp thread Q may alternately pass above three or more loops L and below two or more loops L.

[0032] In each of FIGS. 3 and 5, a gap D is formed between adjacent loops L. This gap D can be made substantially zero by weaving the jacket 2 such that the warp yarn Q is crushed by the adjacent loops L. Note that "the gap D is substantially zero" means that the gap D is so small that a person observing the hose 1 without using a magnifying glass or the like cannot recognize it.

[0033] FIG. 6 is a schematic plan view of the jacket 2 in which the gap D is substantially zero. As described above, in the present embodiment, the base color of the weft yarn P can be visually recognized through the transparent warp yarn Q. Therefore, when the gap D is substantially zero, most of the jacket 2 appears to be uniformly colored in the base color of the weft yarn P.

[0034] FIG. 7 is a schematic plan view of the jacket 2 in which the gap D is not substantially zero. In this case, a striped pattern in which the gap D and the loops L are alternately arranged in the length direction X becomes visible through the transparent warp yarn Q. As an example, the gap D is smaller than the width of the weft yarn P. Note that the color of the gap D is, for example, the color of the lining layer 3 visible through the transparent warp yarn Q.

[0035] When the jacket 2 includes a plurality of weft yarns P, all of these weft yarns P may be colored in the same base color. Also, at least one of these weft yarns P may be colored in a color different from the other weft yarns P.

[0036] FIG. 8 is a schematic plan view of the jacket 2 including two weft yarns P (P1, P2) when these weft yarns P are colored in different colors. The weft yarn P1 includes a plurality of loops L1 arranged in the length direction X. The weft yarn P2 includes a plurality of loops L2 arranged in the length direction X.

[0037] In the example of FIG. 8, these loops L1, L2 are alternately arranged in the length direction X. Further, a gap D that is not substantially zero is formed between adjacent loops L1, L2.

[0038] With such a configuration, a striped pattern in which the color of the horizontal yarn P1 (first color), the gap D (for example, the color of the lining layer 3), and the color of the horizontal yarn P2 (second color) are repeatedly arranged can be visually recognized through the transparent vertical yarn Q.

[0039] In addition, in the example of FIG. 8, the gap D may be substantially zero. In this case, a striped pattern in which the colors of the horizontal yarn P1 and the horizontal yarn P2 are alternately arranged is formed. Further, when the jacket 2 includes three or more horizontal yarns P, these horizontal yarns P may be colored with different colors from each other.

[0040] Patterns such as the straight pattern 20 and the broken line pattern 21 shown in FIG. 1 may be formed by attaching paint to the woven jacket 2. Further, these patterns can also be formed by a part of a plurality of vertical yarns Q included in the jacket 2.

[0041] FIG. 9 is a schematic plan view of the jacket 2 when forming a pattern such as the straight pattern 20 and the broken line pattern 21 by the vertical yarn Q. In the example of this figure, the jacket 2 includes a transparent vertical yarn Q1 and an opaque vertical yarn Q2.

[0042] The vertical yarn Q2 has a color different from that of the horizontal yarn P. The vertical yarn Q2 may be, for example, a white yarn composed of a spun yarn or a multifilament. Further, the vertical yarn Q2 may be colored with a color different from that of the horizontal yarn P.

[0043] With such a configuration, a pattern extending in the longitudinal direction X such as the straight pattern 20 and the broken line pattern 21 can be formed by the vertical yarn Q2. When the jacket 2 includes other opaque vertical yarns Q of different colors in addition to the vertical yarn Q2, more colorful patterns can be formed.

[0044] FIG. 10 is a schematic plan view showing still another example of the jacket 2. In the example of this figure, not only the warp threads Q but also the weft threads P are transparent. In such a case, through the warp threads Q and the weft threads P, the elements below the jacket 2, which are the lining layer 3 in this embodiment, can be visually recognized.

[0045] In addition, when the jacket 2 includes a plurality of weft threads P, all of these weft threads P may be transparent, or at least one of these weft threads P may be transparent and at least one of the others may be non-transparent. As the transparent weft thread P, for example, a monofilament can be used, but other types of wire materials may be used as long as transparency can be ensured.

[0046] The variations of the jacket 2 exemplified above can be combined as appropriate. For example, the jacket 2 may include at least one transparent weft thread P, at least one non-transparent weft thread P, at least one transparent warp thread Q, and at least one non-transparent warp thread Q.

[0047] With the configuration according to this embodiment, since the jacket 2 includes a transparent warp thread Q, a colored hose 1 that utilizes the color of the element below this warp thread Q can be obtained.

[0048] For example, in a conventional general fire hose, the jacket is woven with 1 to 3 weft threads and several hundred warp threads. Also, uncolored spun yarn or multifilament is used for most of the warp threads.

[0049] In such a conventional configuration, as methods for manufacturing a hose with a color other than white, for example, the following first method A and second method B can be mentioned. [A] After manufacturing a hose with an uncolored (white) jacket, the jacket is colored in a separate process. [B] Colored warp threads are used in the process of weaving the jacket.

[0050] In the first method A, it is common to pass a hose through the paint (coloring solution). In this case, if a hose with an uncolored jacket is manufactured in advance, the hose can be colored to a desired color later according to an order. However, since a coloring process is required in addition to the normal manufacturing process of the hose, this leads to an increase in the manufacturing cost of the hose.

[0051] In the second method B, when trying to manufacture a jacket of another color with a loom after manufacturing a jacket of a certain color, a huge number of warp threads have to be replaced. Therefore, the work burden is large, which also leads to an increase in the manufacturing cost of the hose.

[0052] On the other hand, the hose 1 according to the present embodiment can be manufactured by using a transparent warp thread Q and a colored weft thread P in the process of weaving the jacket 2. Therefore, it is possible to omit the coloring process as in the first method A. Further, when manufacturing jackets 2 of different colors with one loom, for example, the warp thread Q can be left as it is and the weft thread P can be replaced. Since the number of weft threads P is significantly smaller than that of warp threads Q, a large burden of replacing the threads as in the second method B is less likely to occur.

[0053] Further, in the hose manufactured by the first method A, the surface of the warp thread that mainly forms the outer surface of the jacket is colored. In this case, when the surface of the jacket wears due to the use of the hose or the like, the color of the jacket may fade partially or entirely.

[0054] On the other hand, when using a transparent warp thread Q and a colored weft thread P, since the weft thread P is protected by the warp thread Q, the color of the jacket 2 is less likely to fade even if the warp thread Q wears.

[0055] Further, when the warp thread is entirely a spun yarn or a multifilament as in the conventional case, the warp thread may become hairy in the process of weaving the jacket. On the other hand, when using a monofilament as the warp thread Q as exemplified in the present embodiment, such hairiness can be suppressed.

[0056] Also, when using the monofilament as the warp yarn Q, it is possible to exhibit an advantageous effect also on the functional aspect of the hose 1, such as suppressing undesired elongation in the length direction X of the jacket 2.

[0057] As the color of the weft yarn P, various colors such as red, blue, and yellow can be used. Further, the color of the weft yarn P may be a fluorescent color. Furthermore, the weft yarn P may be colored with a phosphorescent material or a reflective material. In this case, a hose 1 suitable for use in a dark place can be obtained.

[0058] When both the warp yarn Q and the weft yarn P are transparent as in the example of FIG. 10, the lining layer 3 can be visually recognized from the outside of the hose 1. Such a configuration contributes to the efficiency of the specific work of the damaged portion, which is carried out, for example, when damage to the lining layer 3 is suspected.

[0059] In addition to the above, various favorable effects can be obtained from the present embodiment. Further, the configuration disclosed in the present embodiment is merely an example for embodying the invention related to the hose, and it can be modified in various aspects.

Explanation of Reference Numerals

[0060] 1... Hose, 2... Jacket, 3... Lining layer, 20... Straight pattern, 21... Dashed line pattern, P... Weft yarn, Q... Warp yarn, L... Loop of weft yarn, X... Length direction, θ... Circumferential direction.

Claims

1. a jacket including at least one weft yarn and a plurality of warp yarns; a lining layer provided on the inside of the jacket; Equipped with At least one of the plurality of warp yarns is transparent; The weft yarn is non-transparent, The weft yarns form a striped pattern visible through the transparent warp yarns.

2. The transparent warp yarns are formed of monofilaments.

2. The hose of claim 1.

3. The weft yarn is colored other than white.

2. The hose of claim 1.

4. The weft yarn is colored with a phosphorescent material or a reflective material.

2. The hose of claim 1.

5. The jacket includes a plurality of weft yarns of different colors.

2. The hose of claim 1.

6. A jacket including at least one weft yarn and a plurality of warp yarns; a lining layer provided on the inside of the jacket; Equipped with At least one of the plurality of warp yarns is transparent; The weft yarn is transparent, A hose, wherein the lining layer is visible through the transparent warp threads and the transparent weft threads.

7. A jacket comprising at least one weft yarn and a plurality of warp yarns; a lining layer provided on the inside of the jacket; Equipped with The plurality of warp yarns includes transparent warp yarns and non-transparent warp yarns.

8. The non-transparent warp yarns form a straight or dashed pattern along the length of the hose.

8. The hose of claim 7.

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