JP5873639B2 - Sheet fixing structure - Google Patents

Description

  The present invention relates to a sheet fixing structure for fixing a sheet in a building when a film structure such as an air dome or a tent is assembled using the sheet.

  Conventionally, as a sheet fixing structure in which the edge of a sheet is locked to a fixing member arranged at a predetermined position of a building or the like when the sheet is fixed in assembling or the like of a membrane structure building or the like, it is described in Patent Document 1. There is something.

  In this sheet fixing structure, as shown in FIG. 7, a sheet 102 fixed to a fixed body 100 such as a building support member, a fixing member 110 fixed to the fixed body 100, and a sheet 102 attached to the fixing member 110. A locking member 120 for locking the edge of the sheet and a pressing member 130 for pressing the sheet 102 toward the fixing member 110 are used.

  Specifically, the sheet 102 includes a plurality of film bodies 102a, 102a, 102a arranged in the stacking direction. In a portion adjacent to the inside of the sheet edge 106 that is an edge of the sheet 102, a fixing portion 104 is formed by fixing the peripheral portions of the plurality of film bodies 102a, 102a, and 102a to each other in a stacked state. The sheet 102 configured as described above is inflated by filling a gas such as air between the film bodies 102a and 102a. The fixing member 110 is a long member extending along the sheet end 106 of the sheet 102, and has a mounting recess 112 into which the locking member 120 is inserted. The attachment recess 112 is recessed downward in FIG. 7, and an engagement piece 116 protrudes inward from the side surface 114 on the outer side in the width direction of the fixing member 110. The locking member 120 includes a main body portion 122 that holds the sheet end 106, and an engaging portion 124 that protrudes outward from the lower end of the main body portion 122 and engages with the engaging piece 116 of the mounting recess 112. The engaging portion 124 extends substantially downward in FIG. 7 and has a distal end bent outward. Then, the locking member 120 is fixed in the mounting recess 112 by locking the tip of the engaging portion 124 to the engaging piece 116 of the mounting recess 112. By attaching the pressing member 130 to the fixing member 110 in this state, the sheet 102 extending from the sheet end 106 held by the locking member 120 is sandwiched between the pressing member 130 and the fixing member 110. As a result, the sheet 102 is fixed to the fixed body 100.

JP 2007-314990 A

  In the sheet fixing structure described above, the fixing portion 104 is sandwiched as uniformly as possible in the portion of the sheet 102 sandwiched between the fixing member 110 and the pressing member 130. A fixing portion 104 of the sheet 102, specifically, an end portion (sheet inner end portion) 104a inside the sheet of the fixing portion 104 is formed outside the end position. For example, the fixing portion 104 is formed so that the position of the sheet inner end portion 104a in the fixing portion 104 substantially matches the position of the end portion of the fixing member 110 and the pressing member 130 that sandwich the sheet 102. ing.

  In such a sheet fixing structure, a film is filled between the film bodies 102a and 102a and the sheet 102 swells, whereby a predetermined tension is introduced into the film body, and each film body caused by wind load or the like. In some cases, stress in a direction (out-of-plane direction) intersecting the main surface of 102a is concentrated on the sheet inner end portion 104a of the fixing portion 104. If the state in which the stress in the out-of-plane direction is concentrated at the sheet inner end 104a of the fixing portion 104 continues for a long time, there is a concern that tearing may occur at the position of the sheet inner end 104a of the fixing portion 104 in the film body 102a. The

  Further, even when the sheet has one film body, in order to hold the sheet end to the locking member, the peripheral portion of the film body is folded back toward the inner side of the sheet, and fixed to each other by fixing them together. It is formed. Also in this sheet, when the fixing portion is formed so that the position of the inner end portion of the sheet in the fixing portion substantially coincides with the end portion position of the portion sandwiching the sheet in the fixing member and the pressing member, In some cases, a predetermined tension is introduced into the sheet, and stress in the out-of-plane direction of the film body 102 due to wind load or the like is concentrated on the inner side edge of the fixing portion. Also in this case, as in the case of the sheet having a plurality of film bodies, when the state where the stress in the out-of-plane direction is concentrated for a long time at the sheet inner end of the fixing part, the sheet inner side of the fixing part in the film body There is a concern that tearing may occur at the end position.

  Therefore, in view of the above-described problems, the present invention provides a sheet fixing structure that includes a film body and is firmly fixed to each other in a state where the peripheral portions of the film body are laminated, so that tearing in the vicinity of the fixing portion is unlikely to occur. The issue is to provide.

Therefore, in order to solve the above problems, a sheet fixing structure according to the present invention includes a sheet body having a sheet body portion and a fixing portion fixed to each other in a state where the peripheral portion of the film body is laminated, A fixing member that is fixed to a fixing body that fixes the sheet; and a pressing member that sandwiches the sheet between the fixing member. And the said adhering part is located inside the outer side edge part of the said fixing member, and the outer side edge part of the said pressing member, and the sheet | seat inner side edge part of the said adhering part is located between the said fixing member and the said pressing member. And the site | part connected to the sheet | seat inner side edge part of the said adhering part in the said sheet | seat main-body part is pinched | interposed between the said fixing member and the said pressing member.

In the present invention, the fixing part is positioned inside the outer end portion of the outer end portion and the pressing member of the fixing member, shea over preparative site leading to seat inner end fixing member and the pressing of the fixing portion in the sheet body of the Since it is sandwiched between the members, the stress in the out-of-plane direction (direction intersecting the main surface of each film body) acting on each film body is inside the sheet of the fixing portion located between the fixing member and the pressing member. Does not reach the edge of the sheet (the inner edge of the seat). Thereby, it is possible to effectively suppress the out-of-plane stress concentration on the inner end portion of the sheet and the occurrence of tearing in the vicinity of the fixing portion (sheet inner end portion of the fixing portion).

  In particular, when the sheet main body portion has a plurality of the film bodies and the fixing portions are formed by being fixed to each other in a state where the peripheral portions of the plurality of film bodies are laminated, Since the sheet is filled with the gas and the sheet swells, stress in the out-of-plane direction is more easily concentrated on the sheet inner end of the fixing portion, so that the occurrence of tearing at the position becomes more remarkable. However, it is possible to suppress the concentration of stress in the out-of-plane direction on the inner side edge of the sheet by sandwiching a part of the sheet main body portion between the fixing member and the pressing member, and as a result, tearing is prevented. Occurrence in the vicinity of the fixed portion can be effectively suppressed.

  In addition, when the said film body is a resin film, generation | occurrence | production of the tear in the adhering part vicinity can be suppressed more effectively. This is because the tear strength of the resinous film is low, and when the film body is a resinous film, if stress in the out-of-plane direction is concentrated on the sheet inner end portion of the fixing portion, tearing at that position occurs. Although it becomes more remarkable, it is possible to suitably prevent the concentration of stress in the out-of-plane direction on the end portion of the fixing portion by sandwiching a part of the sheet main body portion between the fixing member and the pressing member. It is because it can do.

  The sheet fixing structure according to the present invention includes a locking member that holds an edge of the sheet, and the pressing member forms a space for housing the locking member between the fixing member and the sheet. The end edge of is securely locked to the fixed body.

  Specifically, the locking member includes a main body portion that extends along an edge of the sheet and into which the edge can be inserted, and a locked piece that protrudes from the main body portion. A notch for inserting a sheet extending from the sheet edge inserted into the main body, and a space between the notch and the locked piece, and an outer surface bulges outward. A curved support surface portion, and the fixing member is a receiving surface facing a space between the pressing member and the fixing member, and is a force from the support surface portion acting by the tension of the sheet. It is preferable to have a concave-curved receiving surface for receiving and a locking portion for locking the locked piece.

  According to such a configuration, since the locking member is fixed to the fixing member by the locked piece and the support surface portion that is a part of the main body, the cross section perpendicular to the longitudinal direction of the locking member can be reduced. . That is, in the conventional locking member, since the locking member is fixed to the fixing member only by the engaging portion, a large engaging portion is provided from the main body portion in order to ensure sufficient strength to face the tension of the sheet. It was protruding. On the other hand, according to the locking member having the above-described configuration, the force acting by the tension of the sheet can be distributed to the locked piece and the support surface portion. It can be made sufficiently smaller than the engaging portion. Thereby, the space for accommodating the locking member can be saved between the fixing member and the pressing member, and as a result, the fixing member and the pressing member are adopted while adopting a configuration that suppresses tearing of the sheet. Can be avoided.

  In the space between the pressing member and the fixing member, the locking piece is moved to the locking portion by rotating the locking member so that the support surface portion follows the receiving surface. Locked.

  According to such a configuration, since the locking member is fixed to the fixing member by rotating the locking member so that the support surface portion follows the receiving surface, the engaging portion is locked like the conventional fixing member. It is not necessary to secure an accommodation space (for example, a space into which the locking member 120 in FIG. 7 is inserted) having a size that allows the main body to move to engage with the piece. As a result, the space for accommodating the locking member can be further reduced, and the fixing member and the pressing member can be further downsized.

  As described above, according to the present invention, there is provided a sheet fixing structure in which tearing in the vicinity of an adhering portion is difficult to occur in sheets that are provided with a film body and are fixed to each other in a state where peripheral portions of the film body are laminated. Can do.

It is the figure which showed typically the structure to which the sheet fixing structure which concerns on this embodiment is applied. It is a figure for demonstrating the arrangement | positioning state of a sheet | seat. FIG. 2 is a longitudinal sectional view showing the sheet fixing structure. FIG. 3B is a partially enlarged view of FIG. 3A. It is an exploded view showing the sheet fixing structure. It is a figure for demonstrating the fixing operation | work of the said sheet | seat. It is a figure for demonstrating the fixing operation | work of the said sheet | seat. It is a longitudinal sectional view showing a conventional sheet fixing structure.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a front view schematically showing an example of a structure to which the sheet fixing structure of the present invention is applied.

  The sheet fixing structure according to the present embodiment is a structure for fixing the sheet 30 to the support member 10 of the structure, and the sheet fixing device for fixing the sheet 30 and the edge of the sheet 30 to the support member 10. 20.

  The structure includes a plurality (three in the example of the present embodiment) of support members (fixed bodies) 10 arranged at a predetermined interval. The support member 10 has a horizontal plate 10a that is orthogonal to the direction in which the support members 10 are arranged and extends horizontally, and a predetermined direction in which the horizontal plate 10a extends below the horizontal plate 10a in order to support the horizontal plate 10a. It has columns 10b, 10b,. The sheet fixing device 20 is disposed on the horizontal plate 10a, and the sheets 30 and 30 on both sides are fixed to the support member 10 by the sheet fixing device 20.

  As shown in FIG. 2, each sheet 30 includes a plurality of film bodies 32 a, 32 b, and 34 a, and includes a sheet main body 32 and a connection portion 34. The sheet main body 32 is mainly present outside the sheet fixing device 20 (between the support members 10 in FIG. 1), and has a sheet main body portion 36b and a fixing portion 36a. Specifically, the sheet main body 32 includes a plurality of film bodies 32a and 32b. In the sheet main body 32, a fixing portion 36a is formed by fixing the peripheral portions of the plurality of film bodies 32a and 32b in a stacked state. Further, the portion inside the fixing portion 36a in the seat body 32 constitutes the seat body portion 36b. In the sheet main body portion 36b, the film bodies 32a and 32b are arranged in the stacking direction in a state where they are not fixed to each other (separated or separable state). Each film body (for example, between the film bodies 32a and 32b) is in an airtight state. The sheet main body 32 is filled with a fluid (air in the present embodiment) between the laminated film bodies 32 a and 32 b, and has a shape in which the central portion bulges in the thickness direction of the sheet 30.

  The connection part 34 is a part connected to the peripheral part of the sheet main body 32 and exists inside the sheet fixing device 20. One end 34 b of the connecting portion 34 is overlapped with and fixed to the ends of the film bodies 32 a and 32 b constituting the sheet main body 32. In other words, the sheet 30 has a fixing portion 36 a to which the film bodies 32 a and 32 b of the sheet main body 32 and the film body 34 a of the connection portion 34 are fixed. In the present embodiment, the sheet 30 has three film bodies 32 a, 32 b, 34 a, of which two film bodies 32 a, 32 b constitute the sheet main body 32, and one film body 34 a constitutes the connection portion 34. ing. In the fixing portion 36a, the film bodies 32a, 32b, and 34a are fixed to each other by heat welding, adhesion by an adhesive, and adhesion by a double-sided tape where strength is not required.

  The film bodies 32a, 32b, and 34a are resin films that do not have a fiber fabric as a core material. For example, specifically, the film bodies 32a, 32b, and 34a are films formed of a synthetic resin such as a fluororesin, a polyvinyl chloride resin, or a polyethylene resin. The film bodies 32a, 32b, and 34a are not limited to resin films that do not have a fiber fabric as a core material, but are at least one of the core materials formed of fiber fabric (fiber woven fabric, knitted fabric, etc.). The sheet | seat etc. which coat | covered the said synthetic resin on the surface may be sufficient. The film bodies 32a, 32b, and 34a of the present embodiment are films formed of, for example, a fluororesin, and a tetrafluoroethylene-ethylene copolymer (ETFE) is used as the fluororesin, and the size is, for example, 4 ×. It is a square of 4 m and has a thickness of 50 to 500 μm, for example.

  Such an edge 33 of the sheet 30 constitutes a held portion held by the locking member 210. The held portion 33 is configured to have a larger thickness dimension (a vertical dimension in FIG. 2) than the portion of the sheet main body 32 adjacent to the held portion 33. Specifically, the held portion 33 of the present embodiment is one of the film bodies 32a and 32b stacked to form the sheet main body 32 (in the example shown in FIG. The end of the film body 32 a) is formed by folding back so as to enclose the long core material 38. The tip of the folded portion of the film body 32a is fixed in a state of being laminated together with the other film bodies 32b and 34a at the fixing portion 36a.

  The connection part 34 of one sheet 30 is connected to the connection part 34 of the other sheet 30. That is, the connection part 34 of one sheet 30 extends toward the connection part 34 of the other sheet 30. One end 34b of the connection portion 34 of one sheet 30 is fixed to the film bodies 32a and 32b of the sheet main body 32 by the fixing portion 36a as described above, and the other end 34c is the other end of the connection portion 34 of the other sheet 30. 34c. In the present embodiment, the other ends 34c, 34c of the connection portion 34 are fixed to each other by the double-sided tape 39, but the present invention is not limited to this.

  3A is a longitudinal sectional view showing the sheet fixing structure of the present embodiment, FIG. 3B is an enlarged view of a portion surrounded by a one-dot chain line in FIG. 3A, and FIG. 4 is an exploded view thereof.

  The sheet fixing device 20 in the sheet fixing structure of the present embodiment includes a locking member 210 that holds an edge (held portion 33) of the sheet 30, a fixing member 220 that is fixed to the support member 10, and the fixing member 220. And a pressing member 230 attached to the.

  The locking member 210 has a main body portion 211 that extends along the held portion 33 of the sheet 30 and into which the held portion 33 can be inserted, and a locked piece 212 that protrudes from the main body portion 211. It is disposed in a space (locking member accommodation space) S1 formed between the fixing member 220 and the pressing member 230.

  The main body 211 has a notch 213 through which the sheet 30 extending from the held portion 33 inserted into the main body 211 is inserted, and a support provided between the notch 213 and the locked piece 212. And a surface portion 214.

  The notch 213 is a part that communicates the space inside the body portion 211 (held portion accommodating space) S <b> 2 and the space outside the body portion 211. The notch 213 is formed in the main body 211 over the entire length direction. The interval between the portions through which the sheet 30 passes in the notch 213 is smaller than the diameter of the core member 38 of the held portion 33.

  The outer surface 214a of the support surface portion 214 has a curved shape that bulges outward. Specifically, the outer surface 214a of the support surface portion 214 is a curved surface that forms a circular arc in which a cross section perpendicular to the longitudinal direction of the main body portion 211 bulges outward.

  In addition, the main body 211 has a jig mounting portion 215 to which a jig used to rotate the main body 211 so that the locking member 210 is locked to the fixing member 220 in the fixing operation of the sheet 30 can be attached and detached. Have. The jig attaching portion 215 is provided on the opposite side of the main body portion 211 with the support surface portion 214 and the held portion accommodating space S2 interposed therebetween.

  The jig attachment portion 215 protrudes from the main body portion 211 and opens toward the sheet 30 side in a circumferential direction of the main body portion 211 rather than a direction orthogonal to a tension direction (see arrow T in FIG. 3A) applied to the held sheet 30. A groove 215a is provided. The tip of the jig is inserted into the groove 215a (see FIG. 5). In addition, the groove part 215a of this jig attachment part 215 may be continued along the longitudinal direction of the main-body part 211, and may be intermittent.

  The locked piece 212 is provided on the opposite side of the main body 211 with the notch 213 and the held portion accommodating space S2 interposed therebetween. The latching piece 212 is configured such that the latching member 210 is rotated so that the support surface 214 is along the receiving surface 222 of the fixing member 220 in the latching member accommodating space S <b> 1. Locked by 224. The locked piece 212 of the present embodiment is formed over the entire length of the main body 211.

  The fixing member 220 has a shape extending in one direction (a direction along the edge 33 of the sheet 30). The fixing member 220 is provided between the thick portions 220a and 220a on both sides, the central projecting portion 220b, and the thick portions 220a and 220b in the cross section orthogonal to the one direction. Mounting recesses 221 and 221.

  The protruding portion 220b is provided with a female screw hole 220c into which a bolt B2 for fixing the pressing member 230 to the fixing member 220 is screwed.

  The thick portion 220a is provided with a bolt receiving portion 220d that receives a bolt B1 for fixing the fixing member 220 to the support member 10 (horizontal plate 10a). An inclined sheet receiving surface 225 is formed at the end of the thick portion 220a opposite to the support member 10. The sheet receiving surface 225 is formed outside the mounting recess 221 in the width direction of the fixing member 220. The sheet receiving surface 225 has a width larger than the width of the fixing portion 36 a in the width direction of the fixing member 220. Thereby, the sheet receiving surface 225 can sandwich a predetermined range including the fixing portion 36 a in the sheet 30 between the pressing member 230. Further, the sheet receiving surface 225 is inclined in a direction away from the support member 10 toward the outside (for example, a direction increasing toward the outside in FIG. 3A). The fixing member 220 of the present embodiment has a waterproof member 226 disposed along the sheet receiving surface 225 on the sheet receiving surface 225. The surface of the waterproof member 226 (the surface opposite to the fixing member 220) is substantially parallel to the sheet receiving surface 225. The sheet 30 extending from the held portion 33 inserted into the locking member 210 is disposed on the waterproof member 226. At this time, the fixing portion 36 a of the sheet 30 is positioned on the inner side of the outer end portion of the waterproof member 226 in the width direction of the fixing member 220. The waterproof member 226 of this embodiment is formed of rubber.

  The attachment recess 221 is a portion that extends along the held portion 33 of the sheet 30 and into which the locking member 210 is inserted. The mounting recess 221 forms a space (locking member accommodation space) S <b> 1 with the pressing member 230. The mounting recess 221 has a receiving surface 222 that faces the locking member accommodation space S1, and this receiving surface 222 is formed so as to be continuous with a surface 227 that extends substantially vertically from the inner end of the sheet receiving surface 225. . The surface 227 extending substantially perpendicularly is inclined slightly toward the outer side in the width direction of the fixing member 220 (on the adjacent sheet receiving surface 225 side).

  The receiving surface 222 is a surface that receives a force from the support surface portion 214 that acts by the tension T of the sheet 30 and has a concave curved shape. Specifically, the receiving surface 222 has a curved shape corresponding to the outer surface 214a of the support surface portion 214 of the locking member 210, and is disposed in the locking member accommodating space S1 (that is, inserted into the mounting recess 221). The contact surface portion 214 of the locking member 210 is in surface contact with the outer surface 214a. Therefore, the support surface portion 214 can be rotated along the receiving surface 222, whereby the locking member 210 can be rotated at a fixed position in the fixing member 220.

  Further, the mounting recess 221 has a side surface (side surface of the projecting portion 220b) 223 that is provided on the opposite side of the receiving surface 222 across the locking member 210 and faces the locking member accommodation space S1. From this side surface 223, a locking portion 224 protrudes toward the main body portion 211 of the locking member 210. The locking portion 224 is a portion for locking the locked piece 212 as described above. Specifically, the locking portion 224 is brought into contact with the locked piece 212 by rotating the locking member 210 disposed in the locking member accommodation space S1 so that the support surface portion 214 follows the receiving surface 222. A contact surface 224a is provided. For example, when the fixing member 220 is fixed to the support member 10 in the posture shown in FIG. 3A, the contact surface 224a extends horizontally or at the front end side obliquely downward with the side surface 223 of the fixing member 220 facing downward. Yes.

  By inserting the locking member 210 into the mounting recess 221, the locking member 210 is fixed to the fixing member 220. Specifically, the mounting recess 221 of the fixing member 220 in a state where the outer surface 214a of the support surface portion 214 is in surface contact with the receiving surface 222 and the locked piece 212 is locked (contacted) with the locking portion 224. The locking member 210 is fixed to the fixing member 220 by disposing the locking member 210 therein.

  The fixing member 220 configured as described above is fixed to the horizontal plate 10a of the support member 10 by bolts B1.

  The pressing member 230 sandwiches the sheet 30 with the fixing member 220. The pressing member 230 of the present embodiment is a plate-like member that extends along the fixing member 220. Sheet pressing surfaces 232 that are inclined surfaces corresponding to the sheet receiving surfaces 225 of the fixing member 220 are formed on both sides in the width direction of the back surface (surface on the fixing member 220 side) 231 of the pressing member 230. The sheet 30 extending from the locking member 210 is disposed between the sheet pressing surface 232 of the pressing member 230 and the sheet receiving surface 225 of the fixing member 220. In other words, the sheet 30 extending from the held portion 33 is pressed toward the sheet receiving surface 225 by the sheet pressing surface 232. In the present embodiment, with the waterproof cover 233 disposed on the fixing member 220 (on the pressing member 230 side) in a state where the locking member 210 and the sheet 30 are disposed, the pressing member 230 is between the fixing member 220 and the fixing member 220. The sheet 30 is sandwiched between the two. Accordingly, the sheet 30 extending from the locking member 210 is sandwiched between the waterproof member 226 and the waterproof cover 233. The waterproof cover 233 is formed of rubber in the same manner as the waterproof member 226. Therefore, even if rainwater or the like flows along the sheet main body 32 by sandwiching the sheet 30 with the waterproof cover 23 in close contact with the waterproof member 226, rainwater into the sheet fixing device 20 can be obtained. Etc. can be prevented. This prevents the rainwater or the like from being immersed in the structure to which the sheet 30 is fixed.

  The fixing portion 36 a of the sheet 30 is located inside the sheet pressing surface 232 and the outer end of the waterproof cover 233 in the width direction of the pressing member 230 (fixing member 220). In the fixing member 220 that sandwiches the sheet 30 with the pressing member 230, the fixing portion 36 a of the sheet 30 is located on the inner side of the outer end portion of the fixing member 220. For this reason, in the sheet | seat 30 extended from the locking member 210 accommodated in locking member accommodation space S1 by the fixing member 220 and the pressing member 230, the adhering part 36a and the part before and behind that are pinched | interposed It becomes. In the sheet 30 in the present embodiment, the fixing portion 36a does not come out from between the fixing member 220 and the pressing member 230 (outside in the width direction of the fixing member 22) when the sheet 30 is extended by the tension T. Formed in position. For example, in the present embodiment, in the width direction of the fixing member 220, the outer end portion of the fixing portion 36 a is located at a position about 10 mm inside the outer end portions of the fixing member 220 and the pressing member 230. In the present embodiment, in the width direction, the end portion of the waterproof member 226 of the fixing member 220 protrudes more outward in the width direction than the end portion of the sheet pressing surface 232 of the pressing member 230 (FIG. 3A). And FIG. 3B).

  Such a pressing member 230 is attached to the fixing member 220 by screwing the bolt B2 into the female screw hole 220c of the projecting portion 220b via the pressing member 230.

  Next, a fixing operation of the sheet 30 to the support member 10 using the sheet fixing structure as described above will be described with reference to FIGS.

  The fixing member 220 is attached on the horizontal plate 10 a of the support member 10. Then, before the air is filled between the film bodies 32a and 32b constituting the sheet main body 32 (specifically, between the film bodies 32a and 32b in the sheet main body portion 36b), the held portion 33 of the sheet 30 is held by the locking member 210. Is inserted into the held portion accommodating space S <b> 2, and the locking member 210 holds the sheet 30. Specifically, the held portion 33 of the sheet 30 is inserted into the held portion receiving space S2 along the axial direction from the axial end face opening of the locking member 210. And the front-end | tip part of a jig is inserted in the groove part 215a of the jig attachment part 215. FIG. This jig includes a portion obtained by bending the tip of a plate-like member having a thickness corresponding to the width of the groove 215a.

  By pressing this jig in a direction away from the sheet 30 in the circumferential direction of the locking member 210 (in the example shown in FIG. 5, the direction of the arrow A), the locking member 210 (main body portion 211) is rotated (FIG. 5 arrow B). At this time, the tip of the latched piece 212 protruding from the main body 211 is rotated to a position where it faces the bottom of the mounting recess 221. Specifically, in the mounting recess 221, the locking portion 224 protruding from the side surface 223 is displaced, and the locked piece 212 can be inserted deeper than the locking portion 224 (posture as shown in FIG. 5). Rotate until.

  Then, in this rotated state, the locking member 210 is inserted into the gap between the receiving surface 222 and the side surface 223 of the protruding portion 220b first from the locked piece 212 side (see arrow C in FIG. 5). The locking member 210 is inserted into the mounting recess 221 until the support surface portion 214 of the main body portion 211 comes into surface contact with the receiving surface 222, and then the pressing force on the jig is loosened. Then, since tension (see arrow T in FIGS. 5 and 6) is exerted on the sheet 30 due to its own weight or the like, the main body portion 211 is directed in the opposite direction by the tension T of the sheet 30 (arrow D in FIG. 6). ). As a result, the locking member 210 rotates in the mounting recess 221 so that the support surface portion 214 follows the receiving surface 222, and the locked piece 212 comes into contact with and locks the locking portion 224. Thus, according to the above-described sheet fixing device 20, the locking member 210 can be fixed to the fixing member 220 while using the tension T of the sheet 30. At this time, since the locking member 210 is rotated at the fixed position in the fixing member 220, it is not necessary to move the locking member 210 against the tension T for locking. In this state, the adhering portion 36 a is located inside the outer end portion of the sheet receiving surface 225.

  Next, the tip of the jig is pulled out from the groove 215a (see arrow E in FIG. 6).

  In this way, after fixing the locking member 210 in a state where the sheet 30 is held in the mounting recesses 221 and 221 on both sides of the fixing member 220, respectively, the waterproof cover 233 and the pressing member 230 are sequentially covered, and the bolt B2 is used. The holding member 230 is attached to the fixing member 220.

  As described above, the sheet 30 is fixed to the support member 10. Then, air is filled between the film bodies 32 a and 32 b constituting the sheet main body 32 of the sheet 30 to inflate the sheet 30 and introduce tension into the film body.

  According to the above-described sheet fixing structure, a portion inside the sheet (that is, a part of the sheet main body portion 36 b) with respect to the fixing portion 36 a in the sheet 30 extending from the locking member 210 is formed by the fixing member 220 and the pressing member 230. Since they are sandwiched, the stress in the out-of-plane direction (direction intersecting the main surface of each film body) acting on each film body 32a, 32b is transmitted to the fixing portion 36a located between the fixing member 220 and the pressing member 230. Absent. Accordingly, it is possible to effectively suppress the out-of-plane stress from being concentrated on the inner end of the sheet of the fixing part 36a and the occurrence of tearing in the vicinity of the fixing part 36a.

  In particular, since the film bodies 32a and 32b of the present embodiment are resinous films that do not have a fiber fabric as a core material, it is possible to more effectively suppress the occurrence of tearing in the vicinity of the fixing portion 36a. This is because the tear strength of the resinous film is lower than that of the film body having the core material, and therefore when the film bodies 32a and 32b are resinous films (when the fiber fabric as the core material is not provided). When the stress in the out-of-plane direction is concentrated on the sheet inner end portion of the fixing portion 36a, tearing at the position becomes more prominent. However, at least the sheet inner end portion of the fixing portion 36a is formed between the fixing member 220 and the pressing member 230. By being configured to sandwich the portion inside the sheet (that is, a part of the sheet main body portion 36b) with respect to the fixing portion 36a in the above-described sheet 30 between the fixing member 220 and the pressing member 230 so as not to protrude outside the outer end portion. This is because the concentration of stress in the out-of-plane direction on the end portion of the fixing portion 36a can be suitably prevented.

  In particular, a configuration in which a part of the sheet main body portion 36b is sandwiched between the fixing member 220 and the pressing member 230 even after a predetermined tension is introduced into the film bodies 32a and 32b is preferable. Specifically, in consideration of the influence of wind load after construction and the like, it is preferable that a part of the sheet main body part 36b is sandwiched between the fixing member 220 and the pressing member 230 at least 10 mm or more. This is because if the portion sandwiched is less than 10 mm, the sheet inner end portion of the fixing portion 36a may be exposed to the outside when some external force such as wind load is applied to the film bodies 32a and 32b. .

  Further, according to the above-described sheet fixing structure, the locking member 210 is fixed to the fixing member 220 by the locked piece 212 and the support surface portion 214 which is a part of the main body portion 211. The cross section perpendicular to the direction can be reduced. That is, in the conventional locking member, since the locking member is fixed to the fixing member only by the engaging portion, a large engaging portion is provided from the main body portion in order to ensure sufficient strength to face the tension of the sheet. It was protruding. On the other hand, according to the locking member 210 having the above-described configuration, the force acting on the tension T of the sheet 30 can be distributed to the locked piece 212 and the support surface portion 214, and thus protrudes from the main body portion 211. The locked piece 212 can be made sufficiently smaller than the conventional engaging portion. Thereby, space saving of locking member accommodation space S1 can be achieved, As a result, it is possible to avoid the enlargement of the fixing member 220 and the pressing member 230 while adopting a configuration that suppresses tearing of the seat 30. It becomes.

  Further, according to the above-described sheet fixing structure, the locking member 210 is fixed to the fixing member 220 by rotating the locking member 210 so that the support surface portion 214 follows the receiving surface 222. As described above, an accommodation space (for example, a space into which the locking member 120 in FIG. 7 is inserted) having a margin for moving the main body to allow the engaging portion to engage with the locking piece is secured. You don't have to. As a result, it is possible to further reduce the space of the locking member accommodation space S1, and to further reduce the size of the fixing member 220 and the pressing member 230.

  The sheet fixing structure of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

  In the above embodiment, the fixing member 220 and the pressing member 230 sandwich the fixing portion 36a of the sheet 30 and the front and rear portions thereof. However, the part of the sheet 30 that is sandwiched between the fixing member 220 and the pressing member 230 is not limited to this part, and a part of the sheet main body portion 36b may be sandwiched. This is because the stress in the out-of-plane direction of the respective film bodies 32a and 32b generated by inflating the sheet 30 is fixed if the portion inside the sheet with respect to the fixing part 36a is sandwiched between the fixing member 220 and the pressing member 230. This is because it is prevented from being transmitted to the portion 36a, thereby suppressing the occurrence of tearing in the vicinity of the fixing portion 36a. Therefore, only the sheet main body portion 36b (a portion inside the sheet from the fixing portion 36a in the sheet 30) is positioned between the sheet receiving surface 225 of the fixing member 220 and the pressing surface 232 of the pressing member 230, and the locking member 210 is Even if the fixing portion 36a is located in the space to be accommodated, the transmission of the stress in the out-of-plane direction to the fixing portion 36a is suppressed, so that the occurrence of tearing in the vicinity of the fixing portion 36a can be suppressed. Further, a part of the fixing portion 36a may be sandwiched between the fixing member 220 and the pressing member 230.

  Moreover, although the film bodies 32a and 32b of the said embodiment are resinous films, it is not limited to this. For example, the film body may be a sheet-like base material coated with a resin or the like.

  The specific number of film bodies constituting the sheet body 32 is not limited. For example, in the above embodiment, the number of film bodies arranged in the stacking direction constituting the sheet main body 32 is two, but may be three or more.

  Further, the number of film bodies constituting the sheet main body may be one. In this case, the held portion 33 held by the locking member 210 is formed by folding the end portion of the film body so as to enclose the long core member 38. Further, the fixed portion is formed by fixing the folded end portion of the film body and the portion inside the end portion in a stacked state.

  Even in the case of such a sheet, when the fixing member 220 and the pressing member 230 are fixed to a fixed body such as a building, the inner end portion of the sheet of the fixing portion extends from between the fixing member 220 and the pressing member 230 to the outside. When it is exposed, when a stress in the out-of-plane direction is generated in the film body due to wind load or the like, the stress is concentrated on the inner end portion of the sheet of the fixing portion and tearing occurs at the portion. Therefore, by adopting a configuration in which a part of the sheet main body is sandwiched between the fixing member and the pressing member, it is possible to suppress the concentration of stress in the out-of-plane direction on the sheet inner end portion of the fixing portion. Can be effectively suppressed from occurring in the vicinity of the fixing portion. That is, the portion inside the sheet with respect to the fixing portion of the sheet extending from the locking member 210 is sandwiched between the fixing member 220 and the pressing member 230, and the stress in the out-of-plane direction acting on the film body is fixed. By not transmitting to the fixing portion located between 220 and the pressing member 230, it is possible to suppress the occurrence of tearing in the vicinity of the fixing portion due to the stress in the out-of-plane direction.

  Moreover, in the said embodiment, although the number of the attachment recessed parts 221 provided in the fixing member 220 is two, it is not limited to this, One may be sufficient.

  Moreover, in the said embodiment, although the latching member 210 is being fixed with respect to the fixing member 220 by the receiving surface 222 and the latching | locking part 224, it is not limited to this. In addition to pressing by the receiving surface 222 and the locking portion 224, the locking member 210 may be fixed to the fixing member by pressing the locking member 210 with the pressing member 230, for example.

10 Support member (fixed body)
30 Sheet 32a, 32b Film body 33 Holding part (edge of sheet)
36a Adhering portion 36b Seat body portion 210 Locking member 211 Body portion 212 Locked piece 214 Support surface portion 214a Support surface portion outer surface 220 Fixing member 222 Receiving surface 224 Locking portion 230 Pressing member S1 Locking member accommodation space T Sheet tension

Claims (6)

A sheet having a sheet main body portion made of a film body and a fixing portion fixed to each other in a state where the peripheral edge portion of the film body is laminated;
A fixing member fixed to a fixing body for fixing the sheet;
A pressing member that sandwiches the sheet between the fixing member, and
The fixing portion is positioned inside the outer end portion of the fixing member and the outer end portion of the pressing member, and at least the sheet inner end portion of the fixing portion is positioned between the fixing member and the pressing member; A sheet fixing structure in which a portion of the sheet main body portion that is connected to the inner end portion of the fixing portion is sandwiched between the fixing member and the pressing member. The sheet main body has a plurality of the film bodies,
2. The sheet fixing structure according to claim 1, wherein the fixing portion is formed by fixing the peripheral portions of the plurality of film bodies to each other in a stacked state.     The sheet fixing structure according to claim 1, wherein the film body is a resin film. A locking member for holding an edge of the sheet;
4. The sheet fixing structure according to claim 1, wherein the pressing member forms a space for accommodating the locking member between the fixing member and the fixing member. 5. The locking member has a main body part that extends along an edge of the sheet and can be inserted, and a locked piece that protrudes from the main body part.
The body portion is provided between a notch portion through which a sheet extending from the sheet edge inserted into the body portion is inserted, and between the notch portion and the locked piece, and an outer surface is outward. A curved support surface portion bulging out,
The fixing member is a receiving surface facing a space between the pressing member and the fixing member, and a receiving surface having a concave curved shape that receives a force from the support surface portion acting by a tension of the sheet, The sheet fixing structure according to claim 4, further comprising a locking portion for locking the locked piece.   In the space between the pressing member and the fixing member, the locking piece is moved to the locking portion by rotating the locking member so that the support surface portion follows the receiving surface. The sheet fixing structure according to claim 5, which is locked.

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