JP2012140765A - Sheet fixing device, locking member used for the device, and sheet fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet fixing device capable of saving a storage space for a locking member in a fixing member and capable of reducing work load in sheet fixing work, a locking member used for the sheet fixing device and a sheet fixing structure.SOLUTION: A sheet fixing device comprises a locking member 210, a fixing member 220, and a presser member 230 in which the locking member 210 and a sheet 30 extending from the locking member 210 are sandwiched between the presser member 230 and the fixing member 220. The locking member 210 has a body part 211 and a locked piece 212 projecting therefrom; the body part 211 has a notch 213 through which the sheet 30 passes and a curved support face part 214 between the notch 213 and the locked piece 212; the fixing member 220 has a concave receiving surface 222 receiving force from the support face part 214 and a locking part 224 for locking the locked piece 212; and the locked piece 212 is locked to the locking part 224 when the locking member 210 is rotated such that the support face part 214 is disposed along the receiving surface 222.

Description

  The present invention relates to a sheet fixing device, a locking member, and a sheet fixing structure that fix a sheet in a building when a film structure such as an air dome or a tent is assembled using the sheet.

  DESCRIPTION OF RELATED ART Conventionally, when fixing a sheet | seat in the assembly etc. of a membrane structure building etc., it describes in patent document 1 as a sheet fixing apparatus which latches the edge of a sheet | seat to the fixing member arrange | positioned in predetermined positions, such as a building. There are things.

  In this sheet fixing apparatus, as shown in FIG. 7, a fixing member 110 fixed to a fixing body 100 such as a building support member, and an edge portion 102 a of the sheet 102 are locked to the fixing member 110. The locking member 120 and the pressing member 130 that presses the locking member 120 toward the fixing member 110 are used.

  Specifically, the fixing member 110 is a long member extending along the edge portion 102a of the sheet 102, and has an attachment 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 body portion 122 that holds the edge portion 102a of the sheet 102, an engagement portion 124 that protrudes outward from the lower end of the body portion 122 and engages with the engagement piece 116 of the mounting recess 112. Have 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.

  In this sheet fixing device, when the sheet 102 is fixed, the locking member 120 holding the edge portion 102a of the sheet 102 is held from the fixed position so that the engaging portion 124 is fitted below the engaging piece 116. However, it is necessary to pull the sheet 102 against the inner side in the width direction against the tension of the sheet 102. Then, by inserting the locking member 120 into the mounting recess 112 and moving the locking member 120 slightly outward in the width direction of the fixing member 110, the engaging portion 124 of the locking member 120 is moved into the mounting recess 112. The engagement piece 116 is engaged. As a result, the edge 102 a of the sheet 102 is locked to the fixing member 110.

JP 2007-314990 A

  In the above-described locking member 120, the engaging portion 124 is locked to the fixing member 110 by engaging with the engaging piece 116 of the fixing member 110. It must be sized so as to ensure sufficient strength to maintain the engaged state with the engaging piece 116 in opposition to the tension. The fixing member 110 also has a size with a margin that allows the main body portion 122 to move in the width direction of the fixing member 110 in order to engage the engaging portion 124 with the engaging piece 116 in the mounting recess 112. The housing space (the space into which the locking member 120 is inserted) must be large enough, and it is difficult to save space.

  Further, in the above locking member 120, when fixing the sheet 102, the locking member 120 is pulled against the tension of the sheet 102 from the fixing position in the mounting recess 112 to the inner side in the width direction of the fixing member 110. Therefore, the sheet 102 needs to be inserted into the mounting recess 112 of the fixing member 110 temporarily, and a large load more than necessary is temporarily applied to the sheet 102. For this reason, the work load in the sheet fixing work is large, and the sheet 102 may be damaged during the fixing work.

  Accordingly, in view of the above problems, the present invention provides a sheet fixing device capable of saving the space for accommodating the locking member in the fixing member and reducing the work load in the sheet fixing operation. It is an object of the present invention to provide a locking member and a sheet fixing structure used in the sheet fixing apparatus.

  Accordingly, in order to solve the above-described problems, the present invention is an apparatus for fixing a sheet to a fixed body, and is provided between a long locking member that holds an edge of the sheet and the fixing member. And a pressing member for sandwiching the sheet. The locking member includes a main body part into which an edge of the sheet can be inserted and a locked piece protruding from the main body part, and is formed between the fixing member and the pressing member. The body portion is provided between the notch portion and the locked piece, and a notch portion through which the sheet extending from the edge portion inserted into the body portion is inserted. And a curved support surface portion whose outer surface bulges outward, and the fixing member is a receiving surface facing the space from the support surface portion acting by the tension of the sheet. A receiving surface having a concave curved shape for receiving a force and a locking portion for locking the locked piece, wherein the locked piece is in the space, and the support surface portion is the receiving surface. The locking member is rotated so as to follow the locking portion, thereby being locked to the locking portion.

  In the present invention, the locking member is fixed to the fixing member by the locked piece and the support surface portion which is a part of the main body portion. Therefore, the locking member is thinned (that is, the dimension in the direction orthogonal to the longitudinal direction is reduced). )can do. Therefore, it is not necessary to provide a large engaging portion that protrudes from the main body portion like the locking member in the conventional sheet fixing device. 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. In addition, according to the sheet fixing device having the above-described configuration, the locking member is fixed to the fixing member by rotating the locking member so that the support surface portion is along the receiving surface. In addition, it is not necessary to secure an accommodation space (a space into which the locking member 120 is inserted in FIG. 7) having a margin for moving the main body portion in order to engage the engaging portion with the locking piece. . As a result, it is possible to save the space in which the locking member is accommodated, and it is possible to reduce the size of the fixing member.

  Further, according to the sheet fixing device having the above-described configuration, the locking member is fixed to the fixing member only by rotating the main body at the fixing position of the locking member in the fixing member (the position where the support surface comes into surface contact with the receiving surface). Therefore, it is possible to reduce labor in fixing the sheet. That is, in the sheet fixing device having the above-described configuration, when fixing the sheet, the supporting surface portion of the locking member is received by the receiving surface in a state where the sheet is pulled through the locking member, and the supporting surface portion is positioned at that position. The locking member is fixed to the fixing member by rotating the locking member along the receiving surface. On the other hand, in the conventional sheet fixing device, when fixing the sheet, the locking member is pulled against the sheet tension further than the fixing position in the sheet surface direction, and the locking member is then used as the fixing member. It must be inserted. Therefore, according to the sheet fixing device having the above-described configuration, the distance for pulling the locking member against the tension of the sheet can be reduced as compared with the conventional sheet fixing device, thereby reducing the work load when fixing the sheet. In addition to being able to reduce, the possibility of damaging the sheet during fixing work can also be reduced.

  In the sheet fixing device according to the present invention, the locked piece is provided on the main body portion on a side opposite to the notch portion, and the main body portion is fixed to the locking member in the fixing operation of the sheet. It is preferable to have a jig mounting part on the opposite side of the support surface part to which a jig used when rotating the main body part to be locked to the member can be attached and detached.

  According to such a configuration, by attaching the jig to the jig attachment portion, it becomes easy to rotate the locking member so that the support surface portion follows the receiving surface in a state where the tension of the sheet is applied, and against the tension of the sheet. It becomes easy to move the locking member to the locking position of the fixing member. Moreover, since the jig can be attached to the side opposite to the support surface portion, the locking member is moved to the fixing position of the fixing member while the jig is attached, and the locking member is arranged so that the support surface portion follows the receiving surface. Can be rotated.

  In addition, the latching piece is provided on the opposite side of the notch, that is, the latching piece is provided between the support surface part and the jig mounting part, so that the locking member is fixed with the jig attached. The jig attached to the jig mounting portion does not get in the way in the operation of moving the member to the fixing position and the operation of rotating the locking member to lock the locked piece to the locking portion of the fixing member.

  It is preferable that the jig attachment portion has a groove portion that opens toward the sheet side in a circumferential direction of the main body portion rather than a direction orthogonal to a tension direction applied to the held sheet.

  According to such a configuration, the locking member can be pulled by inserting the jig into the groove and pushing the jig in the direction opposite to the direction pulled by the sheet. In other words, since the groove portion opens toward the sheet side in the circumferential direction of the main body portion, the locking member can be moved in a state where the jig is hooked on the groove portion, so the sheet can be moved without fixing the jig in the groove portion. The locking member can be moved against the tension.

  Moreover, since the jig is only inserted into the groove after the locking member is fixed to the fixing member, it can be easily removed from the main body by simply pulling out the jig.

  The locking portion is provided on the opposite side of the receiving surface across the locking member and is formed from a side surface of the fixing member facing the space formed between the fixing member and the pressing member. It is preferable to protrude toward the part.

  According to such a configuration, it is possible to reduce labor for rotating the main body portion in order to lock the locked piece to the locking portion. Specifically, since the groove portion of the jig mounting portion opens toward the sheet side, the jig inserted into the groove portion is pulled in the circumferential direction of the main body portion by pressing the jig inserted in the groove portion. The main body can be rotated in a direction opposite to the direction. And if the said press by a jig is stopped in the rotated state, a main-body part will rotate in the direction opposite to the previous direction with the tension | tensile_strength of a sheet | seat. Thereby, the pressing member can be inserted between the receiving surface and the side surface in the state where the jig is pressed and the main body portion is rotated, and the pressing force is loosened. Since the main body is rotated by the tension of the sheet and the locked portion comes into contact with the locking portion protruding from the side surface, the locking member can be fixed to the fixing member while utilizing the tension of the sheet.

  In order to solve the above-described problems, the present invention provides a locking member used in any of the above-described sheet fixing devices, a main body part into which an edge of a sheet can be inserted, and a cover projecting from the main body part. A locking piece, and the main body portion includes a cutout portion that allows a sheet extending from the edge portion inserted into the main body portion to communicate with each other, and between the cutout portion and the locked piece. And a curved support surface portion whose outer surface bulges outward.

  In the present invention, even if a large engaging portion protruding from the main body portion is not provided as in the conventional locking member, the engaging member is made into a fixing member by the locked piece and the support surface portion which is a part of the main body portion. The locking member can be made thin.

  In order to solve the above problems, the present invention includes any one of the sheet fixing devices described above and a sheet whose edge is held by the main body of the locking member in the sheet fixing device.

  In this invention, even if it does not provide a large engaging part which protrudes from a main-body part like the engaging member in the conventional sheet fixing structure, it is a locking member by a to-be-latched piece and the support surface part which is a part of main-body part. By fixing to the fixing member, the locking member can be made thin. In addition, according to the sheet fixing structure having the above-described configuration, the engaging member is fixed to the fixed body by rotating the engaging member so that the support surface portion is along the receiving surface. Therefore, it is not necessary to secure an accommodation space having a size that allows the main body portion to move to engage with each other. As a result, it is possible to save the space for accommodating the locking member. Become.

  Further, according to the sheet fixing structure having the above-described configuration, the fixing member can be fixed to the fixed body simply by rotating the main body portion at the fixing position of the fixing member in the fixing member. The labor can be reduced.

  As described above, according to the present invention, it is possible to save the space for accommodating the locking member in the fixing member, and to reduce the work load in the sheet fixing work, and the sheet fixing device. A locking member used in the apparatus and a sheet fixing structure can be provided.

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. 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 the sheet main body 32 is formed by laminating the peripheral portions of a plurality of film bodies 32a and 32b. It is the structure mutually fixed in the state. And between each film body (for example, between the film bodies 32a and 32b) is an airtight state. The sheet main body 32 is filled with a fluid (air in the present embodiment) between the laminated film bodies 32a and 32b, and has a shape in which the central portion bulges in the thickness direction of the sheet.

  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. That is, the sheet 30 has a fixing portion 36 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 36, the film bodies 32a, 32b, and 34a are fixed to each other by heat welding, adhesion by an adhesive, or adhesion by a double-sided tape where strength is not required.

  The film bodies 32a, 32b, and 34a are synthesized on at least one surface of a core formed of a film formed of a synthetic resin such as a fluororesin, a polyvinyl chloride resin, or a polyethylene resin, or a fiber woven fabric or a knitted fabric. A sheet coated with resin. 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 portion 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 where it is laminated together with the other film bodies 32b and 34a at the fixing portion 36.

  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 36 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 connecting portion 34 are joined by the double-sided tape 39, but the present invention is not limited to this.

  FIG. 3 is a longitudinal sectional view showing the sheet fixing structure of the present embodiment, and FIG. 4 is an exploded view thereof.

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

  The locking member 210 extends along the edge portion 33 of the sheet 30, and includes a main body portion 211 into which the edge portion (held portion) 33 can be inserted, and a locked piece 212 protruding from the main body portion 211. And is disposed in a space (locking member accommodating 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 attaching part 215 protrudes from the main body part 211 and opens toward the sheet 30 side in a circumferential direction of the main body part 211 rather than a direction orthogonal to a tension direction (see arrow T in FIG. 3) 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 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 fixing member 220 has a shape extending in one direction (direction along the edge 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 is inclined in a direction away from the support member 10 toward the outside (for example, a direction increasing toward the outside in FIG. 3). 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 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 mounting recess 221 is a part that extends along the edge 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. 3, the contact surface 224 a extends horizontally or at the front end side obliquely downward while facing downward from the side surface 223 of the fixing member 220. 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 locking member 210 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 similarly to the waterproof member 226, and even if rainwater or the like flows along the sheet body 32 by sandwiching the sheet 30 in close contact with the sheet 30, the sheet fixing device Prevent intrusion of rainwater, etc. into 20. This prevents the rainwater or the like from being immersed in the structure to which the sheet 30 is fixed.

  The fixing portion 36 of the sheet 30 is positioned 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). Further, also in the fixing member 220 that sandwiches the sheet 30 with the pressing member 230, the fixing portion 36 of the sheet 30 is located inside the outer end portion of the fixing member 220. For this reason, the pressing member 230 and the fixing member 220 hold the locking member 210 in a state where the portion beyond the fixing portion 36 of the sheet 30 is sandwiched in the width direction. In the present embodiment, in the width direction, the end of the waterproof member 226 of the fixing member 220 protrudes more outward in the width direction than the end of the sheet pressing surface 232 of the pressing member 230 (FIG. 3). reference).

  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, the held portion (edge portion) 33 of the sheet 30 in a state before being filled with air between the film bodies 32 a and 32 b constituting the sheet main body 32 is inserted into the locking member 210, and the sheet is inserted into the locking member 210. 30 is held. Specifically, the held portion 33 of the sheet 30 is inserted 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.

  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 fixed 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.

  According to the sheet fixing device 20 used in 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 that is a part of the main body portion 211. The stop member 210 can be made thin (that is, the dimension in the direction orthogonal to the longitudinal direction can be reduced). Therefore, it is not necessary to provide a large engaging portion that protrudes from the main body portion like the locking member in the conventional sheet fixing device. 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. In addition, according to the sheet fixing device 20 having the above-described configuration, 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 in the case of the fixing member, it is not necessary to secure a locking member housing space having a size that allows the main body portion to move in order to engage the engaging portion with the locking piece. As a result, it is possible to reduce the space of the locking member accommodation space S1 in which the locking member 210 is accommodated, and it is possible to reduce the size of the fixing member 220 and the like.

  Further, according to the above-described sheet fixing device 20, it is possible to lock only by rotating the main body 211 at the fixing position of the locking member 210 in the fixing member 220 (the position where the support surface 214 comes into surface contact with the receiving surface 222). Since the member 210 can be fixed to the fixing member 220, the labor in fixing the sheet 30 can be reduced. That is, in the sheet fixing device 20 having the above-described configuration, when the sheet 30 is fixed, the support surface portion 214 of the locking member 210 is received by the receiving surface 222 while the sheet 30 is pulled through the locking member 210. 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 at that position. On the other hand, in the conventional sheet fixing device, when fixing the sheet, the locking member is pulled against the sheet tension further than the fixing position in the sheet surface direction, and the locking member is then used as the fixing member. It must be inserted. Therefore, according to the sheet fixing device 20 having the above-described configuration, the distance for pulling the locking member 210 against the tension T of the sheet 30 can be reduced as compared with the conventional sheet fixing device, thereby fixing the sheet 30. It is possible to reduce the work load.

  Further, in the above-described sheet fixing device 20, by attaching a jig to the jig attachment portion 215, the locking member 210 is rotated so that the support surface portion 214 follows the receiving surface 222 in a state where the tension T of the sheet 30 is applied. In addition, it is easy to move the locking member 210 to the locking position of the fixing member 220 against the tension T of the sheet 30. In addition, since the jig can be attached to the side opposite to the support surface portion 214, the locking member 210 is moved to the fixing position in the fixing member 220 while the jig is attached, and the support surface portion 214 follows the receiving surface 222. Thus, the locking member 210 can be rotated.

  In addition, the locked piece 212 is provided on the opposite side of the notch 213, that is, the locked piece 212 is provided between the support surface portion 214 and the jig mounting portion 215, so that the jig is attached. Jig attachment in the operation of moving the locking member 210 to the fixing position of the fixing member 220 and the operation of rotating the locking member 210 to lock the locked piece 212 to the locking portion 224 of the fixing member 220 The jig attached to the part 215 does not get in the way.

  Further, according to the locking member 210 in the sheet fixing device 20 described above, the groove portion 215a in which the jig attaching portion 215 opens toward the sheet 30 side in the circumferential direction of the main body portion 211 rather than the direction orthogonal to the direction of the tension T. The jig can be pulled by inserting the jig into the groove 215a and pushing the locking member 210 in the direction opposite to the direction pulled by the sheet 30. That is, since the groove portion 215a opens toward the sheet 30 in the circumferential direction of the main body portion 211, the locking member 210 can be moved in a state where the jig is hooked on the groove portion 215a. Therefore, the jig is moved into the groove portion 215a. Even if it is not fixed, the locking member 210 can be moved against the tension T of the sheet 30.

  Moreover, after the locking member 210 is fixed to the fixing member 220, the jig is only inserted into the groove portion, and therefore can be easily detached from the main body portion 211 simply by pulling out the jig.

  The sheet fixing device of the present invention, the locking member used in this device, and the sheet fixing structure are not limited to the above embodiment, and various changes can be made without departing from the scope of the present invention. Of course.

  The number of film bodies constituting the sheet body 32 is not limited to two, and may be one, for example, or three or more.

  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 jig attachment part 215 has the groove part 215a in which the front-end | tip part of a jig is inserted, it is not limited to this structure. The jig attaching portion is not limited as long as a jig for moving and rotating the locking member in a state in which the tension of the sheet is applied can be detachably attached. For example, the jig attaching portion may be attached with a screw or the like.

  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)
20 Sheet fixing device 30 Sheet 33 Holding part (edge)
210 Locking member 211 Main body 212 Locked piece 213 Notch 214 Support surface 214a Support surface outer surface 215 Jig mounting portion 220 Fixing member 222 Receiving surface 224 Locking portion 230 Holding member S1 Locking member receiving space T Sheet tension

Claims (6)

An apparatus for fixing a sheet to a fixed body,
An elongated locking member for holding the edge of the sheet;
A fixing member fixed to the fixed body;
A pressing member that sandwiches the sheet between the fixing member, and
The locking member includes a main body part into which an edge of the sheet can be inserted, and a locked piece protruding from the main body part, and a space formed between the fixing member and the pressing member. Arranged in
The body portion is provided between a notch portion through which a sheet extending from the edge portion inserted into the body portion is inserted, and the notch portion and the locked piece, and an outer surface faces outward. And a curved support surface portion that bulges out,
The fixing member is a receiving surface facing the space, and has a concave curved receiving surface that receives a force from the support surface portion acting by the tension of the sheet, and for locking the locked piece. A locking portion,
The locked piece is a sheet fixing device that is locked to the locking portion by rotating the locking member in the space so that the support surface portion is along the receiving surface. The locked piece is provided on the side opposite to the notch in the main body,
The main body portion is opposite to the support surface portion with a jig mounting portion that is detachable from a jig used when the main body portion is rotated so that the locking member is locked to the fixing member in the fixing operation of the sheet. The sheet fixing device according to claim 1, which is provided on a side.   The sheet fixing according to claim 2, wherein the jig attaching portion has a groove portion that opens toward the sheet side in a circumferential direction of the main body portion rather than a direction orthogonal to a tension direction applied to the held sheet. apparatus.   The locking portion is provided on the opposite side of the receiving surface across the locking member and is formed from a side surface of the fixing member facing the space formed between the fixing member and the pressing member. The sheet fixing device according to claim 3, wherein the sheet fixing device projects toward the portion. A locking member for use in the sheet fixing device according to any one of claims 1 to 4,
A body part into which the edge of the sheet can be inserted;
A locked piece protruding from the main body,
The main body is provided between a notch for allowing a sheet extending from the edge inserted into the main body to communicate with each other, and between the notch and the locked piece, and an outer surface faces outward. And a curved support surface portion that bulges. A sheet fixing device according to any one of claims 1 to 4,
A sheet fixing structure comprising: a main body portion of a locking member in the sheet fixing device, and a sheet whose edge is held.

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