Fire hose

Abstract

To present V-shaped patterns showing a retreat direction by weave of a cylindrical woven fabric in a part of a fire hose, and clearly present the V-shaped patterns.SOLUTION: Body parts 21 and direction display parts 22 where V-shaped patterns continuously appear in a longitudinal direction are aligned in a circumferential direction on a cylindrical woven fabric 2 whose weave structure is twill weave. The direction display part 22 is such that: in a normal oblique line pattern part 221 composing one side oblique line of the V-shaped pattern, one first yarn 31 having a hue different from that of the body part 21, and one second yarn 32 having a hue different from that of the first yarn 31 are alternately aligned as the warps in the circumferential direction: and in a reverse oblique line pattern part 222 composing the other side oblique line of the V-shaped pattern, the first yarn 31 and the second yarn 32 are used as the warps, and the one first yarn 31 and the plurality of second yarns 32-32 aligned in the circumferential direction make a pair, and each pair is aligned in the circumferential direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a fire hose in which at least the inner surface of a tubular woven fabric made of warp and weft threads is lined with rubber or synthetic resin. [Background technology]

[0002] Fire hoses are used in firefighting activities. When a fire is in a building on the ground, if evacuation is necessary, firefighters can simply evacuate away from the fire, but when fighting a fire inside a building, firefighters often become engulfed in smoke and lose their direction.

[0003] For this reason, the deployed fire hose is used as a guide to return to the outside of the fire, and it has been proposed that the fire hose extending in the direction of the retreat route should be marked with a sign indicating the direction in which firefighters should evacuate.

[0004] In relation to this proposal, for example, Japanese Patent Laid-Open Publication No. 2004-132443 (Patent Document 1) and Utility Model Registration No. 3091291 (Patent Document 2) have proposed providing an arrow indicator on a fire hose. However, this arrow indicator is displayed using a coating material such as a reflective material or luminous paint, and there is a possibility that it will disappear when the hose becomes worn, etc.

[0005] Also, in Japanese Patent No. 6093893 (Patent Document 3) and Japanese Patent No. 6116732 (Patent Document 4), it has been proposed to express the arrow indicator by weaving a tubular woven fabric. In this case, the arrow indicator will not wear away, but in these designs the arrow indicator is unclear and it is difficult to tell at a glance which direction to retreat. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2004-132443 A [Patent Document 2] Utility Model Registration No. 3091291 [Patent Document 3] Patent No. 6093893 [Patent Document 4] Patent No. 6116732 Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, an object of the present invention is to form a V-shaped pattern indicating the evacuation direction on a part of a fire hose by weaving a tubular woven fabric, and to clearly show the V-shaped pattern. [Means for solving the problem]

[0008] The present invention relates to a fire hose in which at least the inner surface of a tubular woven fabric made of warp threads and weft threads is lined with rubber or synthetic resin. The tubular woven fabric has a twill weave formed by the warp threads and the weft threads. The tubular woven fabric has a main body and a direction indicating part arranged in a circumferential direction. In the direction indicating part, a V-shaped pattern appears continuously in the longitudinal direction of the tubular woven fabric. The direction indicating part has a positive diagonal line pattern part constituting one side diagonal line of the V-shaped pattern, and a positive diagonal line pattern part constituting a diagonal line on one side of the V-shaped pattern. and an inverse diagonal pattern portion constituting the other side diagonal line of the main body portion, wherein in the normal diagonal pattern portion, a first thread having a different color from the main body portion and a second thread having a different color from the first thread are arranged alternately in parallel in the circumferential direction as the warp threads, and in the reverse diagonal pattern portion, the first thread and the second thread are used as the warp threads, and each set of the first thread and multiple second threads arranged in the circumferential direction is arranged in parallel in the circumferential direction.

[0009] According to this configuration, a V-pattern can be formed with a simple twill weave by arranging the first and second yarns of the forward and reverse diagonal pattern portions.

[0010] In addition, in the reverse diagonal pattern portion, one first thread aligned in the circumferential direction and a plurality of second threads excluding the number of threads that meets the following condition 1 or condition 2 may be considered as one set, and each set may be arranged parallel to the circumferential direction. Condition 1: If the weave is 2 / 1 twill, then 3n+2 (n is an integer equal to or greater than 0) Condition 2: If the weave is 3 / 1 twill or 2 / 2 twill, the number is 4n+3 (n is an integer equal to or greater than 0).

[0011] According to this configuration, by using a plurality of second yarns excluding the number of yarns that meets condition 1 or condition 2, the V-shaped pattern can be reliably formed.

[0012] In addition, in the inverse diagonal pattern portion, the second threads may be thinner than the first threads.

[0013] With this configuration, the second thread in the reverse diagonal pattern portion is thinner than the first thread in the normal diagonal pattern portion and the reverse diagonal pattern portion, and by adjusting the circumferential dimension in the reverse diagonal pattern portion of the second thread that appears on the front side of the tubular woven fabric in the twill weave, it is possible to make the normal diagonal pattern portion and the reverse diagonal pattern portion appear nearly circumferentially symmetrical.

[0014] The positive diagonal pattern portion and the negative diagonal pattern portion in the circumferential direction may be symmetrical.

[0015] With this configuration, the second yarn in the reverse diagonal pattern portion is thinner than the first yarn in the forward diagonal pattern portion, and the circumferential dimension of the second yarn appearing on the front side of the tubular woven fabric in the twill weave can be adjusted more finely to make the forward diagonal pattern portion and the reverse diagonal pattern portion appear circumferentially symmetrical, thereby forming a regular V-shaped pattern.

[0016] The present invention also relates to a fire hose in which at least the inner surface of a tubular woven fabric made of warp and weft threads is lined with rubber or synthetic resin, the tubular woven fabric having a twill weave formed by the warp and weft threads, the tubular woven fabric having a main body and a direction indicating portion aligned in the circumferential direction, the direction indicating portion having a V-shaped pattern continuously appearing in the longitudinal direction of the tubular woven fabric, and the direction indicating portion having a forward diagonal line pattern portion constituting one side of the V-shaped pattern and a reverse diagonal line pattern portion constituting the other side of the V-shaped pattern. and a pattern portion, wherein in the positive diagonal pattern portion, the warp threads include a first thread having a different color from the main body portion and a second thread having a different color from the first thread, which are arranged alternately in parallel in the circumferential direction, and in the reverse diagonal pattern portion, the warp threads include a third thread having a different color from the main body portion and the first thread, and a fourth thread having a different color from the third thread, and each set includes one third thread and multiple fourth threads arranged in the circumferential direction, and each set is arranged in parallel in the circumferential direction.

[0017] With this configuration, by arranging the first and second threads in the forward diagonal pattern portion and the third and fourth threads in the reverse diagonal pattern portion, it is possible to form V-patterns of various colors with a simple twill weave.

[0018] In addition, in the reverse diagonal pattern portion, each set may be made up of one third thread aligned in the circumferential direction and a plurality of fourth threads excluding the number of threads that meets the following condition 3 or condition 4, and each set may be arranged parallel to the circumferential direction. Condition 3: If the weave is 2 / 1 twill, then 3n+2 (n is an integer equal to or greater than 0) Condition 4: If the weave is 3 / 1 twill or 2 / 2 twill, then 4n+3 (n is an integer equal to or greater than 0)

[0019] According to this configuration, by using a plurality of second yarns excluding the number of yarns that meets condition 3 or condition 4, the V-shaped pattern can be reliably formed.

[0020] In addition, in the inverse diagonal pattern portion, the fourth thread may be thinner than the third thread.

[0021] With this configuration, the fourth thread in the reverse diagonal pattern portion is thinner than the third thread in the forward diagonal pattern portion, and by adjusting the circumferential dimension of the fourth thread that appears on the front side of the tubular woven fabric in the twill weave in the reverse diagonal pattern portion, it is possible to make the fourth thread appear nearly circumferentially symmetrical in the forward diagonal pattern portion and the reverse diagonal pattern portion.

[0022] The positive diagonal pattern portion and the negative diagonal pattern portion in the circumferential direction may be symmetrical.

[0023] With this configuration, the fourth thread in the reverse diagonal pattern portion is thinner than the third thread in the forward diagonal pattern portion, and the circumferential dimension of the fourth thread appearing on the front side of the tubular woven fabric in the twill weave can be adjusted more finely to make the forward diagonal pattern portion and the reverse diagonal pattern portion appear circumferentially symmetrical, thereby forming a regular V-shaped pattern.

[0024] The present invention also relates to a fire hose in which at least the inner surface of a tubular woven fabric made of warp threads and weft threads is lined with rubber or synthetic resin, the tubular woven fabric having a twill weave formed by the warp threads and the weft threads, the tubular woven fabric having a main body portion and a direction indicating portion aligned in the circumferential direction, the direction indicating portion having a V-shaped pattern continuously appearing in the longitudinal direction of the tubular woven fabric, the direction indicating portion having a positive diagonal line pattern portion constituting one side of the V-shaped pattern and a reversed diagonal line pattern portion constituting the other side of the V-shaped pattern, the positive diagonal line pattern portion having a warp thread and a reversed ... a first thread having a different color from the first thread and a second thread having a different color from the first thread are arranged alternately in parallel in the circumferential direction, the reverse diagonal pattern portion has an elongated twill weave formed by removing one or more warp threads from the twill weave, the first thread and the second thread are used as the warp threads, one first thread and multiple second threads arranged in the circumferential direction are considered to be one set, each set is arranged in parallel in the circumferential direction, and the elongated twill weave is formed between the first thread and the second thread or between the second threads of each set.

[0025] With this configuration, by arranging the first and second threads in the forward diagonal pattern portion and the first and second threads in the reverse diagonal pattern portion and forming a stretch twill weave, a V-pattern can be formed by combining twill weave and stretch twill weave.

[0026] In addition, in the inverse diagonal pattern portion, the second threads may be thinner than the first threads.

[0027] With this configuration, the second thread in the reverse diagonal pattern portion is thinner than the first thread in the normal diagonal pattern portion and the reverse diagonal pattern portion, and by adjusting the circumferential dimension in the reverse diagonal pattern portion of the second thread that appears on the front side of the tubular woven fabric in stretch twill weave, it is possible to make the normal diagonal pattern portion and the reverse diagonal pattern portion appear nearly circumferentially symmetrical.

[0028] The positive diagonal pattern portion and the negative diagonal pattern portion in the circumferential direction may be symmetrical.

[0029] With this configuration, the second yarn in the reverse diagonal pattern portion is thinner than the first yarn in the normal diagonal pattern portion and the reverse diagonal pattern portion, and the circumferential dimension of the second yarn appearing on the front side of the tubular woven fabric in the stretch twill weave can be adjusted more finely to make the normal diagonal pattern portion and the reverse diagonal pattern portion appear circumferentially symmetrical, thereby forming a regular V-shaped pattern.

[0030] The twill weave may also be a 2 / 1 twill weave.

[0031] According to this configuration, a regular V-shaped pattern can be formed using a typical weave. Effect of the Invention

[0032] The present invention can form a V-pattern with a simple twill weave by arranging the first and second threads of the forward and reverse diagonal pattern parts. Therefore, a V-pattern indicating the evacuation direction is formed on a part of a fire hose by weaving a tubular woven fabric, and the V-pattern can be clearly expressed. [Brief description of the drawings]

[0033] [Figure 1] FIG. 1 is a perspective view showing a fire hose according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a structure diagram of the tubular woven fabric of the fire hose. [Diagram 3] 3 is a diagram showing a schematic view of a yarn arrangement in a horizontal cross section of part A in FIG. 2. FIG. [Figure 4] 1 is a photograph of an actual example of the fire hose, which has been flattened, showing a part of the main body and a direction indicator. [Diagram 5] FIG. 4 is a perspective view showing a fire hose according to a second embodiment of the present invention. [Figure 6] FIG. 2 is a structure diagram of the tubular woven fabric of the fire hose. [Figure 7] 7 is a diagram showing a schematic view of a yarn arrangement in a transverse cross section of part B in FIG. 6. FIG. [Figure 8] 1 is a photograph of an actual example of the fire hose, which has been flattened, showing a part of the main body and a direction indicator. [Figure 9] 1 is a photograph of an actual example of the fire hose, which has been flattened, showing a part of the main body and a direction indicator. [Figure 10] FIG. 5 is a structure diagram of a tubular woven fabric for a fire hose according to a third embodiment of the present invention. [Figure 11] 11 is a diagram showing a schematic view of a yarn arrangement in a horizontal cross section of part C in FIG. 10. FIG. [Figure 12] FIG. 11 is a structure diagram of a tubular woven fabric for a fire hose according to a fourth embodiment of the present invention. [Figure 13] FIG. 11 is a structure diagram of a tubular woven fabric for a fire hose according to a fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] Next, the present invention will be described with reference to an embodiment.

[0035] FIG. 1 shows a fire hose 1 of the first embodiment. The fire hose 1 includes a tubular woven fabric 2. The tubular woven fabric 2 is made of warp threads 3 and weft threads 4. The tubular woven fabric 2 has a twill weave formed by the warp threads 3 and the weft threads 4. In this embodiment, the warp threads 3 pass over the front side of two weft threads 4, and then pass over the back side of one weft thread 4, which is a 2 / 1 twill weave. In FIG. 2, the area shown in dots (first thread 31) and the area shown in black (second thread 32) correspond to the portion that appears on the surface of the tubular woven fabric 2 in the 2 / 1 twill weave. In FIG. 2, the area shown in white corresponds to the portion through which the weft thread 4 passes. In FIG. 3, the positional relationship between the front and back of the warp threads 3 based on the weft thread 4 in part A of FIG. 2 is shown in schematic form (the thickness ratio of each thread shown is not accurate). The inner surface of the tubular woven fabric 2 is lined with a lining 5 made of soft rubber or synthetic resin.

[0036] A plurality of V-shaped patterns 6 indicating the retreat direction (to the right in FIG. 1) are displayed on the surface of the tubular woven fabric 2 by the weave structure of the tubular woven fabric 2. In the tubular woven fabric 2, a main body 21 of the tubular woven fabric 2 and a direction display section 22 where the plurality of V-shaped patterns 6 appear consecutively in the longitudinal direction are aligned in the circumferential direction.

[0037] In the main body 21, uncolored (white) yarns 30 are used as the warp yarns 3 in this embodiment. In Fig. 2, black areas are provided to explain the weave structure, but in reality, the yarns are uncolored (white) as shown in Fig. 4. In this embodiment, uncolored (white) yarns are used as the weft yarns 4. Since Fig. 2 is a weave diagram and the vertical and horizontal directions are drawn evenly, the weft yarns 4 appear to be visible, but in an actual weave structure, the warp yarns 3 are packed in the circumferential direction, so they do not appear on the surface of the tubular woven fabric 2, or appear only slightly.

[0038] The direction display unit 22 includes a positive diagonal pattern portion 221 which constitutes the diagonal lines on one side of the V-pattern 6 (the diagonal lines shown on the upper side in FIG. 1 and the diagonal lines shown on the left side in FIG. 4), and a reverse diagonal pattern portion 222 which constitutes the diagonal lines on the other side of the V-pattern 6 (the diagonal lines shown on the lower side in FIG. 1 and the diagonal lines shown on the right side in FIG. 4).

[0039] In the positive diagonal line pattern portion 221, a first thread 31 having a different color from that of the main body portion 21 and a second thread 32 having a different color from that of the first thread 31 are used as the warp threads 3, and one first thread 31 and one second thread 32 are arranged alternately in parallel in the circumferential direction of the tubular woven fabric 2 (the horizontal direction in FIG. 2). The color of the first thread 31 can be selected from various colors as long as it is clearly different from the color of the main body portion 21 (white in this embodiment). In addition, the color of the second thread 32 can be selected from various colors as long as it is clearly different from the color of the first thread 31. Therefore, the color of the second thread 32 may be the same as the color of the thread 30 of the main body portion, or may be a different color (non-colored (white) in this embodiment).

[0040] In the reverse diagonal line pattern portion 222, a first yarn 31 and a second yarn 32 are used as warp threads 3, and each set is made up of one first yarn 31 and multiple second yarns 32 arranged in the circumferential direction, and each set is arranged in parallel in the circumferential direction. The number of second yarns 32 is not particularly limited. However, since no diagonal lines are formed in the reverse diagonal line pattern portion 222 with a number that meets the following condition 1 or condition 2, it is sufficient that there are multiple yarns excluding the number. The 2 / 1 twill weave, 3 / 1 twill weave, and 2 / 2 twill weaves in each condition are illustrative examples of weave structures often used in fire hoses. Condition 1: If the weave is 2 / 1 twill, then 3n+2 (n is an integer equal to or greater than 0) Condition 2: If the weave is 3 / 1 twill or 2 / 2 twill, the number is 4n+3 (n is an integer equal to or greater than 0). The number of second yarns 32 can be appropriately set according to the thicknesses of the first yarns 31 and the second yarns 32. In this embodiment, since the weave is a 2 / 1 twill weave, the number of second yarns is three.

[0041] In this embodiment, 20 / 6 spun polyester yarn (6 twisted strands of 20-count yarn in the example of FIG. 4) is used as the first yarn 31 and the second yarn 32. The dimensions calculated from the yarn count (calculated dimensions, not actual dimensions) of the 20 / 6 2-ply yarn are 1.10 mm in the circumferential dimension of the tubular woven fabric 2. The weft yarn 4 is made of 5 twisted strands of 1100 dtex polyester filament.

[0042] In the positive diagonal line pattern portion 221, the first yarns 31 and the second yarns 32 are arranged alternately in parallel in the circumferential direction for each individual yarn. In the 2 / 1 twill weave, the section where the warp yarns 3 appear on the front side of the tubular woven fabric 2 (the section shown in black or with a dotted pattern in Fig. 2) is arranged to head upward toward the right in Fig. 2 (toward the symmetrical center of the direction display portion 22), as indicated by the inclined line L221 shown by a two-dot chain line.

[0043] On the other hand, in the inverse diagonal pattern portion 222, one first thread 31 and three second threads 32 are grouped together, and each group is arranged in parallel in the circumferential direction. In other words, three second threads 32 are positioned consecutively next to one first thread 31 in the circumferential direction.

[0044] In a 2 / 1 twill weave, the section in which warp threads 3 appear on the front side of the tubular woven fabric 2 is arranged so that it moves upward as it moves to the left in Figure 2 (towards the center of symmetry of the direction indicating portion 22), as shown by the inclined line L222 indicated by a dotted line.

[0045] In this way, by arranging the first thread 31 and the second thread 32 of the forward diagonal pattern portion 221 and the reverse diagonal pattern portion 222, a V-shaped pattern 6 indicating the evacuation direction can be expressed in a part of the fire hose 1 with a simple twill weave by the weave structure of the tubular woven fabric 2.

[0046] In the inverse diagonal line pattern portion 222, the second thread 32N may be thinner than the first thread 31. In this case (second embodiment), the fire hose 1 of this embodiment is as shown in FIG. 5, the weave structure diagram of the tubular woven fabric 2 is as shown in FIG. 6, and the positional relationship between the front and back of the warp thread 3 based on the weft thread 4 in part B of FIG. 6 is as shown in FIG. 7 (the thickness ratio of each thread shown is not accurate). For example, a single 20 / 4 thread of spun ester (four-ply 20-count thread) can be used as the second thread 32N. The circumferential dimension of the tubular woven fabric 2 is 0.45 mm for one 20 / 4 thread. The first yarn 31 and the second yarn 32N of the positive diagonal pattern portion 221 are made of 20 / 6 (six plies of 20-count yarn in the example of FIG. 8) or 20 / 8 (eight plies of 20-count yarn in the example of FIG. 9) spun ester two-ply yarn. The dimensions calculated from the yarn count (calculated dimensions, not actual dimensions) are 1.10 mm for the 20 / 6 two-ply yarn and 1.27 mm for the 20 / 8 two-ply yarn in the circumferential direction of the tubular woven fabric 2.

[0047] 6, the direction indicating portion 22 is arranged so that, with respect to the right end of the forward diagonal pattern portion 221 in Fig. 6 as a reference, the exposed position on the front side of the tubular woven fabric 2 of the first thread 31 on the left side of the forward diagonal pattern portion 221 in Fig. 6 and the exposed position on the front side of the tubular woven fabric 2 of the first first thread 31 on the right side of the reverse diagonal pattern portion 222 substantially coincide with each other in the longitudinal direction of the tubular woven fabric 2. The relationship between the second and subsequent first threads 31 on the left and right sides is similar.

[0048] That is, since the second yarn 32N is thinner than the first yarn 31 in the reverse diagonal pattern portion 222, the number of the second yarns 32N appearing on the front side of the tubular woven fabric 2 in the twill weave and the circumferential dimension corresponding to the thickness of each yarn in the reverse diagonal pattern portion 222 can be adjusted so that the second yarns 32N appear symmetrically in the circumferential direction of the tubular woven fabric 2 in the normal diagonal pattern portion 221 and the reverse diagonal pattern portion 222. Therefore, each V-shaped pattern 6 constituting the direction indicating portion 22 can be formed in a regular shape. Therefore, the V-shaped pattern 6 indicating the evacuation direction is represented in a part of the fire hose 1 by the weave structure of the tubular woven fabric 2, and the V-shaped pattern 6 can be clearly represented without being visually unnatural as shown in Figs. 8 and 9.

[0049] In the reverse diagonal pattern portion 222, a third thread (not shown) different in color from the main body portion 21 and the first thread 31 and a fourth thread (not shown) different in color from the third thread may be used as the warp threads 3, and one third thread and multiple (three in this embodiment) fourth threads arranged in the circumferential direction may be grouped together, with each group being arranged in parallel in the circumferential direction. In this case, a V-shaped pattern with different colors is formed in the normal diagonal pattern portion 221 and the reverse diagonal pattern portion 222.

[0050] The number of the third threads is not particularly limited. However, since the number of the third threads that meets the following condition 3 or 4 does not form a diagonal line, it is sufficient that the number of the third threads is a number other than the number of the third threads that meets the following condition 3 or 4. Condition 3: If the weave is 2 / 1 twill, then 3n+2 (n is an integer equal to or greater than 0) Condition 4: If the weave is 3 / 1 twill or 2 / 2 twill, then 4n+3 (n is an integer equal to or greater than 0)

[0051] Furthermore, by adjusting the number of threads and the thickness of each thread in the reverse diagonal line pattern portion 222 for the fourth yarn, a V-shaped pattern having different colors in the normal diagonal line pattern portion 221 and the reverse diagonal line pattern portion 222 can be made to appear symmetrically in the circumferential direction of the tubular woven fabric 2 in the normal diagonal line pattern portion 221 and the reverse diagonal line pattern portion 222.

[0052] Although an embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

[0053] For example, in the above embodiment, one first thread 31 and three second threads 32 are arranged in one set in the inverse diagonal pattern portion 222. However, the number of second threads 32 may be any number other than the number that meets the above-mentioned condition 1 or condition 2, and may be appropriately set according to the thickness of the first thread 31 and the second thread 32. In order to avoid unnatural appearance of the V-shaped pattern, it is preferable to set the number of second threads 32 to 3n (n=1, 2, 3...) in the case of 2 / 1 twill weave, 4n or 4n+1 (n=1, 2, 3...) in the case of 3 / 1 twill weave, and 4n (n=1, 2, 3...) in the case of 2 / 2 twill weave. Furthermore, in consideration of the weaving workability of the tubular woven fabric 2, it is appropriate to limit the number of second threads 32 in each set to a maximum of 13.

[0054] Furthermore, the thicker the first thread 31 is compared to the second thread 32, or the thinner the second thread 32 is compared to the first thread 31, the narrower the gap between the first threads 31, 31 in the circumferential direction of the tubular woven fabric 2, and the more the color of the first thread 31 appears continuous, making the V-shaped pattern clearer. However, since the first thread 31 also appears continuous in the longitudinal direction of the tubular woven fabric 2, it is not preferable if the second thread 32 is too thin. For example, when spun ester is used and the number of second threads 32 constituting one set is three as in the above embodiment, the following can be exemplified as suitable threads (however, they are not limited to these). The first yarn 31 is one 20 / 6, two 20 / 6, two 20 / 8, and two 20 / 10. The range of dimensions calculated from the yarn count (not the actual dimensions but the calculated dimensions) is 0.55 mm to 1.42 mm. The second yarn 32 is one 20 / 3, one 20 / 4, one 20 / 6, two 20 / 3 strands, and two 20 / 6 strands. The range of dimensions calculated from the yarn count is 0.39 mm to 1.10 mm.

[0055] Moreover, as the first yarn 31 and the second yarn 32 constituting one set, the combinations shown in Table 1 can be exemplified (however, the combinations are not limited to these). [Table 1]

[0056] Also, the reverse diagonal line pattern portion 222 may have a stretched twill weave structure formed by deleting one or more warp threads from a twill weave structure, as in the third embodiment shown in FIG. 10 (FIG. 11), the fourth embodiment shown in FIG. 12, and the fifth embodiment shown in FIG. 13, and may have one first thread 31 and two second threads 32 in one set. The stretched twill is a weave structure formed by deleting several warp threads or weft threads of a twill weave, as described on pages 141-142 of a book titled "Textiles and Textile Products - Japan Textile Industry Education Research Association" (published by Jikkyo Publishing Co., Ltd., author (representative): Tatsuo Adachi), which is a high school textbook, and here, the stretched twill is formed by deleting the warp threads. In the ones shown in each figure, one second thread 32 is deleted in each set compared to the first and second embodiments, and a stretched twill weave structure is formed between the first and second threads or between the second threads themselves. Of the three second threads 32 lined up in Figure 2, Figure 10 (Figure 11) shows one with the left hand side removed, Figure 12 shows one with the center thread removed, and Figure 13 shows one with the right hand side removed.

[0057] Here, two second threads 32, 32 are used as one set, but two or more threads may be used, and the number can be appropriately set according to the thicknesses of the first thread 31 and the second thread 32. Also, as in Fig. 6, a thread thinner than the first thread 31 can be used as the second thread 32. Also, if a thread thinner than the first thread 31 is used as the second thread 32, four or more second threads 32 can be connected in succession. [Explanation of symbols]

[0058] 1. Fire hose 2. Tubular woven fabric 21 Main body 22 Direction display 221 Positive diagonal line pattern 222 Reverse diagonal line pattern 3. Warp 30 Warp threads (uncolored) 31 First Thread 32 Second Thread 32N 2nd thread (thin thread) 4 Weft 5 Lining 6 V-shaped pattern

Claims

1. A fire hose in which at least the inner surface of a tubular woven fabric made of warp and weft yarns is lined with rubber or synthetic resin, The weaving structure of the tubular woven fabric is a twill weave woven by the warp yarns and the weft yarns, The tubular woven fabric has a main body and a direction indicating portion aligned in a circumferential direction, In the direction indicating portion, a V-shaped pattern appears continuously in the longitudinal direction of the tubular woven fabric, the direction indication portion includes a positive diagonal line pattern portion constituting a diagonal line on one side of the V-pattern, and a reverse diagonal line pattern portion constituting a diagonal line on the other side of the V-pattern, In the positive oblique line pattern portion, as the warp yarns, one first yarn having a different color from that of the main body portion and one second yarn having a different color from that of the first yarn are arranged alternately in parallel in the circumferential direction, In the inverse diagonal line pattern portion, the first yarn and the second yarn are used as the warp yarns, and each set of the first yarn and a plurality of the second yarns arranged in the circumferential direction is arranged in parallel in the circumferential direction, a first thread arranged in the circumferential direction and a plurality of the second threads excluding the number of the second threads that meets the following condition 1 or condition 2 are grouped into one set, and each set is arranged in parallel in the circumferential direction. Condition 1: If the weave is a 2 / 1 twill weave, 3n+2 (n is an integer equal to or greater than 0) Condition 2: If the weave is 3 / 1 twill or 2 / 2 twill, 4n+3 (n is an integer of 0 or more)

2. 2. The fire hose according to claim 1, wherein the second threads are thinner than the first threads in the inverse diagonal pattern portion.

3. 3. The fire hose according to claim 2, wherein the positive diagonal pattern portion and the negative diagonal pattern portion in the circumferential direction are symmetrical.

4. A fire hose in which at least the inner surface of a tubular woven fabric made of warp and weft yarns is lined with rubber or synthetic resin, The weaving structure of the tubular woven fabric is a twill weave woven by the warp yarns and the weft yarns, The tubular woven fabric has a main body and a direction indicating portion aligned in a circumferential direction, In the direction indicating portion, a V-shaped pattern appears continuously in the longitudinal direction of the tubular woven fabric, the direction indication portion includes a positive diagonal line pattern portion constituting a diagonal line on one side of the V-pattern, and a reverse diagonal line pattern portion constituting a diagonal line on the other side of the V-pattern, In the positive oblique line pattern portion, as the warp yarns, one first yarn having a different color from that of the main body portion and one second yarn having a different color from that of the first yarn are arranged alternately in parallel in the circumferential direction, In the inverted diagonal pattern portion, a third yarn having a different color from the main body portion and the first yarn, and a fourth yarn having a different color from the third yarn are used as the warp yarns, and one third yarn and a plurality of fourth yarns arranged in the circumferential direction are regarded as one set, and each set is arranged in parallel in the circumferential direction, a reverse diagonal pattern portion including a set of one third thread aligned in the circumferential direction and a plurality of fourth threads excluding the number of fourth threads that meets the following condition 3 or condition 4, and each set is arranged in parallel in the circumferential direction. Condition 3: If the weave is a 2 / 1 twill weave, 3n+2 (n is an integer of 0 or more) Condition 4: If the weave is 3 / 1 twill or 2 / 2 twill, 4n+3 (n is an integer of 0 or more)

5. 5. The fire hose according to claim 4, wherein the fourth threads are thinner than the third threads in the inverse diagonal line pattern portion.

6. 6. The fire hose according to claim 5, wherein the positive diagonal pattern portion and the negative diagonal pattern portion in the circumferential direction are symmetrical.

7. A fire hose in which at least the inner surface of a tubular woven fabric made of warp and weft yarns is lined with rubber or synthetic resin, The weaving structure of the tubular woven fabric is a twill weave woven by the warp yarns and the weft yarns, The tubular woven fabric has a main body and a direction indicating portion aligned in a circumferential direction, In the direction indicating portion, a V-shaped pattern appears continuously in the longitudinal direction of the tubular woven fabric, the direction indication portion includes a positive diagonal line pattern portion constituting a diagonal line on one side of the V-pattern, and a reverse diagonal line pattern portion constituting a diagonal line on the other side of the V-pattern, In the positive oblique line pattern portion, as the warp yarns, one first yarn having a different color from that of the main body portion and one second yarn having a different color from that of the first yarn are arranged alternately in parallel in the circumferential direction, The reverse diagonal pattern portion has an elongated twill weave formed by removing one or more warp threads from the twill weave, the first thread and the second thread are used as the warp threads, one first thread and multiple second threads arranged in the circumferential direction are considered to be one set, each set is arranged in parallel in the circumferential direction, and the elongated twill weave is formed between the first thread and the second thread of each set or between the second threads of each set.

8. 8. The fire hose according to claim 7, wherein the second threads are thinner than the first threads in the inverse diagonal pattern portion.

9. 9. The fire hose according to claim 8, wherein the positive diagonal pattern portion and the negative diagonal pattern portion in the circumferential direction are symmetrical.

10. 10. A fire hose as claimed in claim 1, wherein the twill weave is a 2 / 1 twill weave.

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