JP5473285B2 - Arched air column, method for manufacturing the same, and air column tent - Google Patents

Description

  The present invention relates to an arch-shaped air column that is curved in an arch shape in a state where a flexible airtight cylinder is inflated by air pressure, and an air column tent formed by extending a sheet along the skeleton using the arch-shaped air column as a skeleton. It is about.

  In general, a tent stands upright on the ground, and the tent is formed by extending the sheet with the support as a support, but it requires a long bar-like support and is bulky to be accommodated and transported when not needed. It was inconvenient.

  Therefore, compressed air is pressed into a flexible airtight cylinder and inflated to form a rod-shaped air column, a frame is formed by combining these air columns, and a sheet is placed on the outside to form a tent. (Japanese Utility Model Laid-Open No. 6-56395).

  However, in this case, when compressed air is pressed into the cylinder, the cylinder forms a straight air column, so the individual air columns must be straight, and in order to form a tent framework, These linear air columns are connected to form a frame of a desired shape, and the structure becomes complicated.

  Japanese Patent Application Laid-Open No. 7-71140 discloses that a normal woven fabric woven in the vertical and horizontal directions and a bias woven fabric woven with diagonal threads are joined at both side edges to form a cylinder and compressed air is injected. It is shown that a biased woven fabric woven with diagonal threads is elongated to form an air column having a curved shape as a whole.

  However, in this case, since two woven fabrics having different properties are joined to form a cylindrical shape, at least two joint portions are formed in the circumferential direction of the air column, and the joint portions have different properties. Since the woven fabric is joined, the behavior of the two woven fabrics is different at the time of pressurization, so that a large force is applied to the joined portion, and the joining strength may be greatly reduced.

  In view of such circumstances, the applicant has developed an arch-type air column that is a column of an air column tent that is curved in an arch shape by applying internal pressure to a single tubular woven fabric. A patent application has been filed as 2008-42436.

  This fabric uses a warp thread as a warp thread, weaves a tubular woven fabric using normal yarns for weft, and extends along the longitudinal direction of a part of the circumferential direction of the tubular woven fabric. Stretching restraining means such as sticking tape is applied, and by applying internal pressure, the warp yarns are stretched in the length direction and part of the circumferential direction is restrained by the stretching restraining means. By this, it curves in the shape of an arch as a whole.

  FIG. 1 shows an air column tent 1 according to the present invention. A plurality of the arched air columns 2 are arranged side by side to inject pressure fluid to be inflated into a cylindrical shape and curved in an arch shape as shown in the drawing. Let stand. Therefore, a plurality of arch-type air columns 2 standing in an arch shape are provided as a framework, and the seat 3 is extended along the framework on the outside thereof, so that the arch-type air column 2 supports the seat 3 and has a space inside. To build a tent.

However, the arch type air column 2 does not have sufficient rigidity in a direction perpendicular to the curve direction of the arch, and tends to fall in a right angle direction while being curved when a large force is applied. For this reason, when the tent is beaten by a strong wind or rainwater accumulates on the seat 3, the tent may fall down.
Japanese Utility Model Publication No. 6-56395 JP-A-7-71140

  The present invention has been made in view of such circumstances, and in the arched air column that serves as a support of the above-described air column tent, the arch can be smoothly curved in the bending direction, and the direction perpendicular to the bending direction. An object of the present invention is to provide an arched air column that has a large rigidity and does not fall over even when a large external force is applied.

  Thus, the arch type air column of the present invention comprises two tubular woven fabrics formed by weaving stretchable warp yarns extending in the length direction and having stretchability in the length direction and weft yarns extending in the circumferential direction. The weft yarns in the two tubular woven fabrics are laid in parallel and spirally woven in opposite directions, and the two tubular woven fabrics are continuous in the length direction in a part of the circumferential direction. Bonded to each other, and the inner surface of each cylindrical woven fabric is subjected to an airtight process to form a flexible dual airtight cylinder, and the positions of each airtight cylinder that are symmetrical with respect to the plane including the joint portion. Further, the present invention is characterized in that an extension suppressing means is provided in the length direction.

  In the arched air column of the present invention, each of the tubular woven fabrics is preferably a tubular fabric woven into a tubular shape by weaving a weft thread in a spiral manner with respect to the elastic warp yarns arranged in an annular shape. . Moreover, it is preferable that the two cylindrical cloths are joined together by being continuously joined in the length direction by warp yarns.

  In the present invention, it is preferable that each of the airtight cylinders has an airtight lining on at least an inner surface of each of the tubular woven fabrics. The two tubular woven fabrics may be joined together by stitching together. The two tubular woven fabrics may be continuously joined in the length direction at a plurality of locations close to each other.

  Further, as the elongation restraining means in the present invention, by using a non-stretch warp having no stretchability in the length direction as a part of the warp in the circumferential direction of each cylindrical woven fabric, Stretching in the vertical direction can be suppressed.

  Further, as another means for suppressing elongation in the present invention, a part of the airtight cylindrical body in the circumferential direction has a stretchability in the length direction along the length direction of the cylindrical woven fabric. By attaching a flexible extension suppressing member that does not, the extension in the length direction can be suppressed.

  In this case, the extension suppressing member is preferably a rope, string, wire, or other string-like object having no extension in the length direction. Further, the string-like object is more preferably a flat belt shape.

  Moreover, it is preferable that the said expansion | extension suppression member is attached along the inner surface of the cylindrical woven fabric in the said airtight cylinder. Moreover, as an expansion | extension suppression means in this invention, a bag part is formed in the circumferential direction part of each said cylindrical woven fabric along the length direction, an expansion | extension suppression member is inserted in the said bag part, The said expansion | extension suppression Elongation can also be suppressed by the member.

  In this case, it is preferable that the bag portion is a vertical-mouth bag weaving portion formed in a part of the tubular woven fabric in the circumferential direction. Further, the two tubular woven fabrics may be joined at a plurality of locations close to each other, and a portion between the joined locations may be a bag portion.

  Further, the position at which the extension suppressing member is provided in each of the airtight cylinders is preferably provided at a position substantially perpendicular to the center of the joint portion of each of the airtight cylinders from the center thereof. .

  Next, the invention of the manufacturing method of the arched air column in the present invention is to weave a cylindrical cloth in which wefts are spirally woven into a plurality of elastic warp yarns arranged in an annular shape into two layers, The two-layer cylindrical cloth is continuously connected to each other in the length direction, and the inner cylindrical cloth is turned into the outer cylindrical cloth by inverting the inner and outer surfaces of the outer cylindrical cloth of the two layers. The two cylindrical cloths are juxtaposed to each other, and an extension suppressing means is provided on a part of the circumferential direction of each cylindrical cloth.

  Further, the air column tent of the present invention forms a tent framework by inflating and bending a pressure fluid into the arch type air column described in any of the above, and forming a sheet along the framework. It is characterized by the extension.

  In the present invention, the arched air column has two airtight cylinders juxtaposed and joined, and each of the airtight cylinders is provided with an extension restraining means. It can be easily bent in the direction perpendicular to the line connecting the center of the body to form an arch shape, and shows high rigidity in the direction in which the airtight cylinders are arranged, and does not curve.

  Therefore, according to the present invention, the arch is smoothly bent in the bending direction to form a smooth arch, and has a high rigidity in the direction perpendicular thereto, so that the tent does not fall down due to wind and rain.

  According to the invention, the weft yarns in the two tubular woven fabrics are woven into spirals in opposite directions. In general, in a cylindrical woven fabric in which weft yarns are spirally woven with respect to the warp yarns arranged in an annular shape, when the internal pressure is applied, the cylindrical woven fabric is twisted in the direction opposite to the spiral direction of the weft yarns. However, in the present invention, the spiral directions of the weft yarns in the two tubular woven fabrics are reversed, and the two tubular woven fabrics are joined together, so that the twisting direction is canceled out. The arched air column forms a smooth arched shape without twisting as a whole.

  The present invention will be described below with reference to the drawings. FIG. 2 shows an arched air column 4 of the present invention, in which two airtight cylinders 5a and 5b are arranged in parallel, and the two airtight cylinders 5a and 5b are part of the circumferential direction thereof. In the airtight cylinders 5a and 5b, the expansion suppressing members 7 are attached in the length direction at positions symmetrical to the plane A including the joints 6 in the airtight cylinders 5a and 5b. The elongation of 5b is partially suppressed. As means for attaching, means such as sewing and adhesion can be used.

  FIG. 3 shows an example of a specific structure of the arched air column 4. The airtight cylinders 5a and 5b are respectively composed of a stretchable warp 8 having stretchability in the length direction and a circumferential direction. It has cylindrical cloths 10a and 10b made of weft yarns 9 that are spirally woven into stretchable warp yarns 8. Airtight lining 11 is applied to the inner surfaces of the cylindrical cloths 10a and 10b. .

  As the elastic warp yarn 8, a yarn having elasticity in the length direction is used. As a material of the elastic warp yarn 8, a crimped yarn of synthetic fiber, a polyurethane elastic yarn, or the like can be used. Moreover, as the weft yarn 9, a normal natural fiber or a synthetic fiber can be used, and it is preferable to use a non-stretchable one.

  The lining 11 is made of a flexible material such as rubber, soft vinyl chloride resin, polyurethane elastic body, or polyester elastomer. A tube made of these materials is drawn into the cylindrical cloths 10a and 10b and is inflated by applying internal pressure. It can be formed by adhering to the inner surface of the cylindrical cloth 10a, 10b. In general, various methods for lining the inner surface of a jacket in a fire hose or the like have been proposed, and these can be appropriately selected and employed.

  In this example, the lining 11 needs to be formed on at least the inner surface of the tubular woven fabric 2, but a similar rubber or soft plastic film is formed on the outer surface of the tubular woven fabric 2. There is no problem.

  The two cylindrical cloths 10a and 10b are connected to each other in a circumferential direction by connecting the warp yarns 12 to the weft yarns 9 of both the cylindrical cloths 10a and 10b. The cloths 10a and 10b are joined together.

  And the expansion | extension suppression member 7 is attached to the position symmetrical to the surface A containing the said junction part 6 of the orthogonal | vertical direction toward the junction part 6 from the center of each airtight cylinder 5a, 5b. The elongation suppressing member 7 is a long object that does not have elasticity, and a string-like object such as a rope, a string, or a wire can be used. However, excessive force is locally applied to the airtight cylinders 5a and 5b. It is preferable to use a flexible and flat belt so as not to act. In the example of FIG. 3, the extension suppressing member 7 is attached to the inner surface of the lining 11.

  As a means for joining the cylindrical cloths 10a and 10b, in FIG. 3, the two cylindrical cloths 10a and 10b are connected by a separate warp thread 12 which is separate from the elastic warp yarn 8 constituting them. Alternatively, the elastic warp yarns 8 constituting the cylindrical cloths 10a and 10b can be connected to each other by organizing them into the weft threads 9 of the opposite cylindrical cloths 10b and 10a. It is also possible to sew and join two tubular cloths 10a and 10b woven separately.

  Moreover, it is preferable that the weft thread 9 which comprises the said two cylindrical cloth 10a, 10b is woven in the mutually opposite spiral direction. When internal pressure is applied to each of the airtight cylinders 5a and 5b, the airtight cylinders 5a and 5b are twisted in a direction opposite to the spiral direction of the weft thread 9 in the cylindrical cloths 10a and 10b. By reversing the spiral direction of the weft thread 9 in the cylindrical cloths 10a and 10b, the twist directions cancel each other, and the entire twist can be prevented from occurring.

  When manufacturing the two cylindrical cloths 10a and 10b connected as described above, they can be woven as two vertical sack fabrics connected to each other using a normal power loom. However, it is preferable to use a circular loom for weaving a tubular woven fabric as described below.

  FIG. 4 shows a two-layered tubular fabric 13 in which two tubular fabrics 10a and 10b are woven in two layers, and the tubular fabric 10b is inserted into the tubular fabric 10a. The tubular cloth 10 a and the tubular cloth 10 b are connected by the warp 12.

  FIG. 5 shows a state in which the two-layered tubular fabric 13 is woven by the annular loom 17, and the elastic warp yarn 8 and the connected warp yarn that are radially arranged and supplied from the outside to the inside are shown. 12 is opened in a predetermined order by a heald (not shown) provided on the outer periphery of the warps 8 and 12, and the four shuttles 14a and 14b are rotated in the openings to be mounted on the shuttles 14a and 14b. The weft yarn 9 supplied from the bobbin 15 is woven into the stretchable warp yarn 8 and the bound warp yarn 12 to thereby form two pieces of the cylindrical fabric 10a and the tubular fabric 10b connected by the connected warp yarn 12. The layered tubular fabric 13 is woven.

  A circular loom usually has two or four shuttles, and separate wefts are fed out from bobbins mounted on these shuttles. Therefore, by adjusting the opening order of the warp yarns, two layers of inner and outer layers are formed into a two-layer cylindrical shape. It is easy to weave the fabric 13.

  Further, the tubular fabrics 10a and 10b are connected by the connected warp yarn 12 by adjusting the opening of the warp yarn 12 which is connected so as to be woven into both the cylindrical fabrics 10a and 10b in the two-layered cylindrical fabric 13. Can do.

  Of the two-layered tubular fabric 6, the outer tubular fabric 10a is turned upside down and turned over so that the inner tubular fabric 10b inserted into the tubular fabric 10a is turned outside the tubular fabric 10a. Thus, it becomes a double cylindrical cloth shown in FIG.

  FIG. 6 shows a state in which the outer tubular cloth 10a of the two-layered tubular fabric 13 is turned over. The outer tubular cloth 10a is folded back to the outside, and the inner side of the folded portion 16 is outside. When turned upside down, the inner tubular cloth 10b connected to the outer tubular cloth 10a is reversed to the outside along with the outer tubular cloth 10a, and the outer tubular cloth 10a is turned over. In this state, the cylindrical cloth 10a and the cylindrical cloth 10b are connected in parallel and connected by the warp thread 12, and two continuous cylindrical cloths are obtained.

  Further, according to this method, since the shuttles 14a and 14b in the circular loom 17 rotate in the same direction, the spiral direction of the weft yarns 9 of the two cylindrical fabrics 10a and 10b in the two-layered cylindrical fabric 13 is the same. However, when the outer tubular cloth 10a is turned over, the direction of the spiral of the weft 9 of the tubular cloth 10a is reversed, and the inner tubular cloth 10b is inverted as it is, so that they are opposite to each other. It becomes what connected cylindrical cloth 10a, 10b which has the weft 9 of the direction spiral.

  In the above description, the two airtight cylinders 5a and 5b are connected at one place in the circumferential direction as shown in FIG. 7, but are connected at a plurality of places close to each other as shown in FIG. It is also possible. In this case, it is necessary to connect at a short interval, and the interval between the ends should be 30% or less of the circumference of the airtight cylinders 5a and 5b. As shown in FIG. 8, the arcuate shape of the airtight cylinders 5a and 5b is lost at the connected locations. Therefore, if it exceeds 30%, the form of the airtight cylinders 5a and 5b is impaired.

  Further, in the above description, each of the airtight cylinders 5a and 5b is described as having the lining 11 on the inner surface of the cylindrical cloth 10a and 10b woven in a cylindrical shape, but this is limited to this structure. It is not a thing.

  Although the extension suppressing member 7 can be joined to each of the airtight cylinders 5a and 5b as described above, a bag portion 24 extending in the length direction is formed on a part of each of the airtight cylinders 5a and 5b. The extension suppressing member 7 can be inserted into the bag portion 24.

  FIG. 9 shows an example thereof, and the airtight cylinders 5a and 5b are connected at a plurality of locations close to each other as in the example of FIG. 24, the extension suppressing member 7 is inserted there.

  Thus, in the state which formed the bag part 24 in a part of airtight cylinders 5a and 5b, and the expansion | extension suppression member 7 was penetrated in the said bag part 24, the expansion | extension suppression member 7 becomes the airtight cylinders 5a and 5b. It is not fixed. However, when a pressure fluid is fed into the airtight cylinders 5a and 5b and an internal pressure is applied, the internal pressure crushes the bag portion 24 and presses against the expansion suppressing member 7, so that the expansion suppressing member 7 is within the bag portion 24. Does not slip, and the function as an extension suppressing means is not impaired.

  As described above, in the structure in which the expansion suppressing member 7 is attached to the airtight cylinders 5a and 5b, the expansion suppressing member 7 is attached in a state where the cylindrical cloths 10a and 10b contract in the length direction. However, in some cases, the degree of curvature of the arched air column 4 can be adjusted by attaching the extension suppressing member 7 in a state where the cylindrical cloths 10a and 10b are slightly extended in the length direction. .

  In other words, in the present invention, when the internal pressure is applied to the airtight cylinders 5a and 5b, the cylindrical cloths 10a and 10b are stretched due to the tension in the length direction and stretched by a part of the circumferential direction. When the extension is suppressed by the extension suppressing member 7, it is bent so that the position where the extension suppressing member 7 is attached is inside.

  Since the degree of the curvature is determined by the difference in the expansion rate between the inside and outside of the curve in the airtight cylinders 5a and 5b, the extension suppressing member 7 is in a state where the airtight cylinders 5a and 5b are slightly extended as described above. As a result, the rate of extension of the outer side of the curve relative to the inner side becomes relatively small, the degree of bending becomes more gradual, and the degree of bending can be partially adjusted.

  Conversely, when attaching the expansion suppressing member 7 to the airtight cylinders 5a and 5b, attaching the airtight cylinders 5a and 5b with some slack, the degree of curvature of the arched air column 4 is increased. Can be made more rapid.

  FIG. 10 shows another example of the extension suppressing means for suppressing extension in a part of the cylindrical cloth 10a, 10b in the present invention, and shows the main part of one cylindrical cloth 10. The same applies to the other cylindrical cloth.

  In FIG. 10, the tubular cloth 10 is formed by weaving warp and weft. As the warp, the elastic warp 8 occupying most of the tubular cloth 10 and a part of the circumferential direction of the tubular cloth 10. And the warp yarns 23 and 23 and the weft yarn 5 form a cylindrical cloth 10.

  In other words, in this example, the tubular fabric 10 is stretchable by the stretchable warp yarn 8 that occupies most of the warp yarn constituting the tubular fabric 10, and the lengthwise direction is partly in the circumferential direction. By using the non-stretchable warp yarn 23 as the warp yarn extending in the direction, the elongation is partially suppressed. The tubular cloth 10 is subjected to an airtight process to form an arched air column 4.

  In this specification, “not having stretchability” means that the material is not particularly characterized in that it has stretchability, and that it does not take any special means for imparting stretchability. It means, and does not exclude even the stretchability as a physical property inherent to the material.

  Accordingly, the non-stretch warp yarn 23 is excluded from the yarn having the characteristic of being stretchable like the stretch warp yarn 8, but other yarns made of ordinary natural fibers or synthetic fibers are used as they are. can do.

  In the present invention, the extension suppressing member 7 is provided at a symmetrical position with respect to the surfaces including the joint portion in each of the airtight cylinders 5a and 5b, and the joint portion from the center of each of the airtight cylinders 5 and 5 is provided. Is provided at a position substantially perpendicular to the center of the tube, so that when the internal pressure is applied to the two airtight cylinders 5a and 5b, the tube is smoothly curved while maintaining its circular shape.

  As described above, the extension suppressing member 7 can be provided in a direction shifted from a right angle direction from the center of each of the airtight cylinders 5a and 5b toward the center of the joint. However, in this case, each of the airtight cylinders 5a and 5b tends to bend so that the position of the extension suppressing member 7 is inside the curve. Although it may be distorted, the function of the arched air column 4 is not impaired.

  The air column tent 1 of the present invention feeds a pressure fluid into the arched air column 4 described above to inflate and bend it, and stands this on the ground to make it a tent framework. Then, by expanding the sheet along the framework, the air column tent 1 similar to that shown in FIG. 1 can be formed.

  Thus, the arch-type air column 4 of the present invention basically has a structure in which an airtight treatment is applied to a tubular woven fabric in which warp yarns and weft yarns are woven. It has pressure resistance and has a structure that can be folded flat when not in use, based on the flexibility of the tubular woven fabric.

  Since the elastic warp 8 is used as the warp in the tubular woven fabric, when the internal pressure is applied, tension is applied to the elastic warp 8 and the tubular woven fabric extends in the length direction. Can do. However, since the tubular woven fabric is restrained from being stretched in a part of the circumferential direction, even when an internal pressure is applied and a tension is applied, the tubular woven fabric cannot stretch in the portion in which the stretch is restrained. .

  Therefore, when an internal pressure is applied and tension is applied in the length direction of the tubular woven fabric, the portion where the extension is suppressed does not extend, and the other portions extend and there is a difference in the amount of extension between them. Therefore, the tubular woven fabric 2 is bent so that the portion in which the expansion is suppressed is inside, and an arch-shaped tubular body is formed.

  The arch-type air column 4 has two such airtight cylinders 5a and 5b arranged in parallel, and the extension restraining means is formed at a symmetrical position from the joint, so that the two airtight cylinders 5a and 5b are As shown in FIG. 11, it bends in an arch shape in a parallel state. Therefore, although it can bend smoothly in the bending direction, it has rigidity in the direction perpendicular to it by the two airtight cylinders 5a and 5b, and the formed arch becomes difficult to fall.

  Accordingly, when the air column tent 1 is formed using the arch-shaped air column 4 as a framework, the tent collapses due to wind or rain because the arch-shaped air column 4 as the framework exhibits a large rigidity with respect to the direction in which it collapses. There is no.

Perspective view of air column tent Perspective view of arched air column of the present invention Cross-sectional view showing an example of the arched air column of the present invention Cross-sectional view of a two-layered tubular fabric in the process of producing a double tubular fabric in the present invention The top view which shows the state which weaves the said 2 layer cylindrical textile fabric with a ring loom Central longitudinal sectional view showing a state in which the two-layered tubular fabric is turned over Cross section showing an example of arched air column Cross section showing another example of arched air column Cross section showing yet another example of arched air column Perspective view of main part showing another example of cylindrical cloth The perspective view of the use condition of the arch type air column of the present invention

DESCRIPTION OF SYMBOLS 1 Air column tent 4 Arch type | formula air column 5 Airtight cylinder 6 Joint part 7 Elongation suppression member 8 Stretch warp 9 Weft thread 10 Cylindrical cloth 11 Lining 12 Tying thread 13 Two-layer cylindrical fabric 17 Circular loom 21 Longitudinal bag weaving part 23 Non-stretch warp 24 Bag

Claims (17)

Two tubular woven fabrics (10) formed by weaving a stretchable warp yarn (8) extending in the length direction and having a stretchability in the length direction and a weft yarn (9) extending in the circumferential direction are arranged side by side. The weft yarns (9) in the two tubular woven fabrics (10) are woven in spirals in opposite directions, and the two tubular woven fabrics (10) are long in a part of the circumferential direction. Each of the airtight cylinders is joined to each other continuously in the vertical direction and subjected to airtight treatment on the inner surface of each tubular woven fabric (10) to form a flexible double airtight cylinder (5a, 5b). An arch-type air column characterized in that, in (5a, 5b), an extension suppressing means (7, 23) is provided in a longitudinal direction at a position symmetrical to a plane including the joint (6). Each of the tubular woven fabrics (10) is a tubular fabric (10a, 10b) in which weft yarns (9) are spirally woven into an annular stretch warp yarn (8) and woven into a tubular shape. The arched air column according to claim 1, wherein   The said two cylindrical cloth (10a, 10b) is joined by connecting continuously in the length direction mutually by the connecting thread (12), The joining is characterized by the above-mentioned. Arched air column Each of the airtight cylinders (5a, 5b) is obtained by applying an airtight lining (11) to at least an inner surface of each cylindrical woven fabric (10). Arched air column described The arched air column according to claim 1, wherein the two tubular woven fabrics (10) are joined together by stitching together. The arched air column according to claim 1, wherein the two tubular woven fabrics (10) are continuously joined in the longitudinal direction at a plurality of locations close to each other. By using a non-stretchable warp (23) that does not have stretchability in the length direction as a part of the warp in the circumferential direction of each tubular woven fabric (10), the stretch in the lengthwise direction of that portion is used. The arched air column according to claim 1, wherein the air column is suppressed. A flexible extension restraining member that does not have stretchability in the length direction along a length direction of the tubular woven fabric (10) in a part of the circumferential direction of each of the airtight cylinders (5a, 5b). The arch type air column according to claim 1, wherein the longitudinal extension is suppressed by attaching (7). The arch type air column according to claim 8, wherein the extension suppressing member (7) is a rope, a string, a wire, or other string-like object having no extension in the length direction. The arch-type air column according to claim 9, characterized in that the extension suppressing member (7) has a flat belt shape. The arch according to claim 8, wherein the extension suppressing member (7) is attached along an inner surface of a tubular woven fabric (10) in the airtight cylinder (5a, 5b). Type column A bag portion (24) was formed along a length direction of a part of the cylindrical woven fabric (10) in the circumferential direction, and an extension suppressing member (7) was inserted into the bag portion (24). The arched air column according to claim 8, The arch type according to claim 12, characterized in that the bag portion (24) is a vertical-mouth bag weaving portion (21) formed in a part of a circumferential direction of the tubular woven fabric (10). Air column The arch according to claim 12, wherein the two tubular woven fabrics (10) are joined at a plurality of locations close to each other, and a portion between the joined locations is a bag portion (24). Type column The said expansion | extension suppression member (7) was provided in the position of a substantially perpendicular direction toward the center of a junction part from the center in each airtight cylinder (5a, 5b). Arched air column A cylindrical fabric (10a, 10b) formed by spirally weaving a weft thread (9) with respect to a plurality of elastic warp threads (8) arranged in a ring is woven in two layers, and the two-layer cylinder The inner cloth (10b) is formed by continuously connecting the cloths (10a, 10b) to each other in the length direction and inverting the inner and outer surfaces of the outer tubular cloth (10a) of the two layers. To the outside of the outer cylindrical cloth (10a), the two cylindrical cloths (10a, 10b) are juxtaposed, and an extension suppressing means is provided on a part of the circumferential direction of each of the cylindrical cloths (10a, 10b). A method of manufacturing an arched air column, characterized by taking The arch-type air column (4) according to any one of claims 1 to 15 is fed with a pressure fluid to be inflated and curved to form a tent framework, and a sheet is stretched along the framework. An air column tent characterized by

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