Membrane end fixing structure

Abstract

To provide a fixing structure of a membrane material end which dispenses with peripheral processing of a membrane material at a plant, and facilitates tension introduction and adjustment of a membrane material at a site.SOLUTION: A fixing structure of a membrane material end includes: a membrane end fixing frame 10 connected in a longitudinal direction of a side end of a pipe structure 2; fixing bolts 20 arranged on the membrane end fixing frame 10 at a predetermined interval in the longitudinal direction of the pipe structure 2; and a membrane end pressing plate 30 for penetrating each bolt shaft of the fixing bolt 20 and held on each of the bolt shafts, and sandwiching the end of a membrane material 1. The fixing bolt 20 is fixed and held on the membrane end fixing frame 10 so that the bolt shafts are substantially perpendicular to a surface where the membrane material 1 is expanded, inserts an engagement hole formed on the end of the membrane material 1 to the fixing bolt 20, sandwiches the end of the membrane material with the membrane end pressing plate 30, moves the membrane end pressing plate 30 in a bolt shaft direction, and fixes and holds the membrane material 1 with a step between the expanded surface of the membrane material 1 and the surface of the membrane end sandwiching frame 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fixing structure for membrane material ends, and more particularly to a fixing structure for membrane material ends that allows easy fixing of membrane material ends at a site where membrane material is installed. [Background technology]

[0002] Conventionally, in various membrane structures, various fixing structures have been adopted to fix and support the ends of membrane materials used as roofing materials, ceiling membranes, inner curtains, or sidewall membranes to structural supports such as beam / column pipes, steel materials, or parts of the concrete framework. The applicant has already proposed a fixing structure for membrane material ends that allows for easy fixing of membrane materials while eliminating excessive pulling when fixing membrane materials to structural supports (Patent Document 1).

[0003] In the fixing structure disclosed in Patent Document 1, the edge rope portion of the membrane material is inserted into the edge rope swallowing portion of the aluminum fastener, which has an edge rope swallowing portion and a pocket-like groove along the longitudinal direction of the member, and the membrane material is pulled to a predetermined position while supporting the side edge of the membrane material, so that the aluminum fastener is fixed and held in place by connecting hooking members that engage with the hooked portion formed integrally with the pipe support and the pocket-like groove of the aluminum fastener, respectively. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-129698 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned fixing structure, the edge rope is inserted and held together with the bag portion formed on the periphery of the membrane material through the end opening of the edge rope intake portion formed on the aluminum fastener. Therefore, in the manufacturing process of the membrane material at a factory or the like, it is necessary to form the bag portion on the periphery of the membrane material that has been cut to a predetermined size with high precision, and then insert the rope into the bag portion to install the edge rope.

[0006] Another simple fixing structure that has been used is racking using ropes, but in this case it is necessary to form a plurality of eyelet holes at predetermined intervals around the periphery of the membrane material.

[0007] Therefore, the object of the present invention is to provide a fixing structure for the end of a membrane material that eliminates the problems associated with the conventional technology described above, eliminates the need for peripheral processing of the membrane material when it is manufactured in a factory, and makes it easy to introduce and adjust tension into the membrane material when it is stretched. [Means for solving the problem]

[0008] The present invention provides a fixing structure for fixing and holding an end of a membrane material stretched on a structural support, the fixing structure comprising: a membrane end fixing member connected along the longitudinal direction of the side end of the structural support; A fixing height adjusting nut and a fixing pressing nut are screwed onto the shaft portion, and the film end clamping means is held between the fixing height adjusting nut and the fixing pressing nut, The structure is characterized in that it comprises fixing bolts arranged on the membrane end fixing member at predetermined intervals along the longitudinal direction of the structural support, and membrane end clamping means that are passed through and held by each bolt shaft of the fixing bolts and clamp the end of the membrane material, the fixing bolts are fixed and held on the membrane end fixing member so that the bolt shaft is approximately perpendicular to the extended surface of the membrane material, the fixing bolts are inserted into locking holes formed in the end of the membrane material, the membrane end clamping means clamps the end of the membrane material, and the membrane end clamping means is moved along the bolt axial direction, creating a step between the surface of the extended membrane material and the surface of the membrane end clamping means to introduce tension into the membrane material and fix and hold the end of the membrane material.

[0009] The membrane end fixing member preferably has a pocket-shaped groove formed along the longitudinal direction of the member, capable of accommodating the bolt head of the fixing bolt.

[0011] The film end clamping means is a long member consisting of a film end upper surface pressure plate and a film end lower surface pressure plate, and it is preferable that the end of the film material is clamped between the film end upper surface pressure plate and the film end lower surface pressure plate, and is fixed and held in place by applying a compressive force to the end of the film material by tightening the fixing height adjustment nut and the fixing pressure nut.

[0012] It is preferable that the holding position of the film end clamping means is set by adjusting the height of the fixing height adjusting nut.

[0013] It is preferable that the membrane material be bent back at a part of the upper end of the membrane end fixing member and a part of the membrane end upper surface pressing plate so that the locking hole is inserted through the fixing bolt.

[0014] The end of the membrane material is preferably covered with a decorative cover fixedly held by the membrane end fixing member and the fixing bolt. [Effects of the Invention]

[0015] According to the present invention, it is not necessary to process the periphery of the membrane material when manufacturing the membrane material in a factory, and it is possible to easily introduce and adjust tension in the membrane material when stretching the membrane material on site. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a cross-sectional view showing the cross-sectional shape of one embodiment of a membrane material end fixing structure of the present invention. [Figure 2] 2 is a partial plan view showing the cross-sectional shape and longitudinal configuration of the membrane material end and membrane end fixing frame (before membrane end fixing) in the fixing structure of the membrane material end shown in FIG. 1. FIG. [Figure 3] 2 is an explanatory diagram showing the fixing state of the fixing structure of the membrane material end shown in FIG. 1. FIG. [Figure 4] 4 is a plan view illustrating a state corresponding to the fixing state shown in FIG. 3; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the membrane material end fixing structure of the present invention will be described with reference to FIG.

[0018] Fig. 1 shows a part of a membrane material structure to which the membrane material end fixing structure of the present invention is applied. As shown in the figure, the end 1a of a membrane material 1 stretched as a membrane roof of a steel structure building, for example, is fixed to the membrane end fixing part 11 of the membrane end fixing frame 10 attached along the longitudinal direction of the pipe structure 2 so as to cover from above a steel pipe (hereinafter referred to as the pipe structure 2) that is part of the beam of the building.

[0019] 2(a) and 2(b), the membrane end fixing frame 10 is connected to a joint plate 4 welded to one end of the outer surface of the pipe structure 2 by connecting bolts 3 arranged at predetermined intervals along the longitudinal direction of the membrane end fixing frame 10. In addition, rib plates 5 are attached to the joint plate 4 at predetermined intervals along the longitudinal direction, thereby maintaining the rigidity of the joint plate 4.

[0020] The membrane end fixing frame 10 is a long, hollow aluminum extrusion of a predetermined length, continuously attached along the longitudinal direction to the pipe structure 2 that is covered by the membrane end 1a of the expanded membrane material 1. As shown in Figure 1, the cross-sectional shape is a hollow shape with an approximately L-shaped outer cross section, and a portion of the membrane material 1 is pressed against the rounded chamfered portions 12a at the top corners of the vertical members 12 when expanded. Multiple horizontal ribs 13 are formed to divide the hollow interior of the vertical members 12, maintaining the cross-sectional rigidity of the frame members. Pocket-like grooves 15a, 15b capable of accommodating bolt heads are formed in parts of the hollow interior (Figures 1 and 2(b)). The pocket-like groove 15a provided in the horizontal member 14 accommodates the bolt head 20a of the fixing bolt 20 that secures the membrane end 1a (Figures 1 and 2(b)). The bolt heads 3a of the connecting bolts 3 are accommodated in the pocket-shaped grooves 15b provided in the vertical member 12 (Fig. 2(b)). These pocket-shaped grooves 15a, 15b are formed with the same cross section along the entire longitudinal length of the membrane end anchoring frame 10. Therefore, by tightening nuts at appropriate longitudinal positions on the membrane end anchoring frame 10, the anchoring bolts 20 and connecting bolts 3, whose heads are accommodated in the pocket-shaped grooves 15a, 15b, can be fixed and held in place at any desired position. The installation position of the connecting bolts 3 can be adjusted by forming elongated holes (not shown) in the joint plate 4, allowing the position of the semicircular top 12a of the membrane end anchoring frame 10 relative to the joint plate 4, thereby enabling precise adjustment of the height of the membrane material end 1a. Note that, instead of the pocket-shaped grooves 15a, 15b, female threaded holes into which the connecting bolts 3 and anchoring bolts 20 can be threaded may be provided at predetermined positions on the membrane end anchoring frame 10, or they may be directly welded.

[0021] The configuration of the membrane material end 1a anchoring structure and the anchoring state of the membrane material end 1a of the present invention will now be described with reference to Figures 1, 2(a), and 2(b). Figure 2(a) shows a plan view of the end 1a of the membrane material 1 constituting the membrane roof and the membrane end anchoring frame 10 before the membrane material end 1a is anchored. Figure 2(b) shows a side view of the configuration shown in Figure 2(a). The membrane roof of this embodiment uses a membrane material with a polyester fiber woven fabric base and a polyvinyl chloride (PVC) coating on the surface. However, membrane materials such as a glass fiber woven fabric base and a polytetrafluoroethylene coating can also be used as appropriate depending on the specifications of the membrane roof. The end 1a of the membrane material 1, which is stretched over the top surface of the roof structure support member as a membrane roof, has locking holes 6 formed at intervals equal to the installation intervals of the anchoring bolts 20 on the membrane end anchoring frame 10 (200 mm intervals in the longitudinal direction in this embodiment). This locking hole 6 can be machined in a factory, or it can be done at the membrane roof construction site by cutting the membrane material 1 to the specified dimensions based on on-site measurements and drilling holes along the periphery of the cut membrane material 1 using hand tools.

[0022] FIG. 1 shows a membrane end fixing frame 10 to which a membrane material end 1a is fixed. A fixing bolt 20, whose bolt head 20a is received in a pocket-shaped groove 15a, is fixed and held in place in the membrane end fixing frame 10 by tightening a fixing nut 16. In addition to the fixing nut 16, a fixing height adjusting nut 17 is screwed onto the fixing bolt 20. In the same figure, the fixing height adjusting nut 17 is attached so that the fixing position of the membrane material end 1a is approximately at the mid-height position of the fixing bolt 20. Two aluminum membrane end pressing plates 30 (a membrane end lower surface pressing plate 31 and a membrane end upper surface pressing plate 32) are attached to the fixing bolt 20 so that the fixing height adjusting nut 17 maintains its attachment position. The membrane end lower surface pressing plate 31 and the membrane end upper surface pressing plate 32 are fitted into the locking holes 6 as shown in FIG. (Fig. 2(a) When the membrane material end 1a held by the fixing bolt 20 via the membrane end pressure plate 31 is clamped between two membrane end pressure plates 30, the membrane material end 1a folded back by the convex end of the thick membrane end upper pressure plate 32 is pressed from below by the membrane surface lower pressure plate 31, which is sized to fit tightly against the underside of the membrane end upper pressure plate 32.

[0023] [Fixation of membrane edge] In the state where the membrane material end 1a has been fixed as shown in Figure 1, the membrane material end 1a is bent down to follow the rounded chamfered portion 12a at the corner of the membrane end fixing frame 10, folded back at the corner 32a of the membrane end upper surface pressing plate 32, and clamped on both sides by two membrane end pressing plates 30 (membrane end lower surface pressing plate 31, membrane end upper surface pressing plate 32) positioned above and below, and fixed in a state where it is tightened so that a predetermined tension is applied to the membrane material end 1a between the fixing height adjustment nut 17 and the pressing nut 18. The tension introduced into the membrane material 1 can be adjusted by changing the amount of retraction of the membrane material end 1a toward the membrane end fixing frame 10 by adjusting the height of the fixing height adjustment nut 17.

[0024] Furthermore, a decorative cover 40 is attached to the membrane end fixing frame 10 so as to cover the entire membrane end fixing portion 11 and the fixing bolt 20. The decorative cover 40 is an extruded aluminum material with a cross section that is roughly inverted L-shaped, and a locking claw 41 that can be locked onto the tip of the fixing bolt 20 is formed on the inner surface of the upper edge, and the decorative cover 40 has the locking claw 41 placed over the tip of the fixing bolt 20, and the lower end of the cover is fixed and held to the membrane end fixing frame 10 with a screw 42. The cross-sectional shape functions to drip water from the membrane material end 1a, and can be made to be suitable for the design of the eaves of a membrane roof.

[0025] [Fixing the membrane end] The process of fixing the end of the roof membrane material to the above-mentioned membrane material 1 end fixing structure will be described with reference to Figures 3 and 4. Note that Figures 3 and 4 show a modified example in which the top of the vertical member 12 of the membrane end fixing frame 10 is formed into a semicircular top portion 12b with a semicircular cross section. By forming this semicircular top portion 12b, it is possible to reduce resistance when the membrane material end 1a is pressed and bent in the bolt axial direction toward the membrane end pressing plate 30.

[0026] First, to fix the membrane material end 1a, the fixing height adjustment nuts 17 are screwed onto the fixing bolts 20 of the membrane end fixing frame 10, the membrane end lower surface pressing plate 31 is set on top of them, and each locking hole 6 of the membrane material end 1a is inserted into each fixing bolt 20, and it is temporarily fixed on the membrane end lower surface pressing plate 31 (Fig. 3(a) and Fig. 4(a)). After that, the membrane material end 1a is pressed against the fixing bolts 20, and the membrane material end 1a is clamped between the membrane end upper surface pressing plate 32 and the membrane end lower surface pressing plate 31. In this state, the membrane material end 1a is folded back by the convex end 32a of the membrane end upper surface pressing plate 32, and is sandwiched between the lower surface of the membrane end upper surface pressing plate 32 and the upper surface of the membrane lower surface pressing plate 31, resulting in a temporarily fixed state (Fig. 3(b) and Fig. 4(b)). At this stage, it is necessary to introduce a predetermined tension into the membrane material 1 to adjust the tension of the membrane surface stretched out as a membrane roof, and the introduced tension can be adjusted by adjusting the amount of retraction of the membrane material 1 end 1a toward the membrane end fixing frame 10 in the bolt axial direction of the fixing bolts 20. For example, by adjusting the height of the fixing height adjustment nuts 17, the height (bolt axial position) of the two membrane end pressing plates 30 (membrane end lower surface pressing plate 31, membrane end upper surface pressing plate 32) can be adjusted, and this makes it possible to increase or decrease the amount of retraction of the membrane material end 1a toward the membrane end fixing frame 10, thereby adjusting the tension of the membrane surface. Then, by tightening the pressure nut 18 on the membrane end upper pressure plate 32, the membrane material end 1a is tightly clamped between the membrane end upper pressure plate 32 and the membrane end lower pressure plate 31, and the fixing bolt 20 is moved in the bolt axial direction, thereby introducing a predetermined tension into the membrane material end 1a and securely fixing it to the membrane end fixing frame 10 (Fig. 3(c), Fig. 4(c)). As the final step, a decorative cover 40 is attached to the membrane end fixing frame 10 so as to cover the entire membrane end fixing part 11 and the fixing bolt 20. When attaching the decorative cover 40, the locking claw 41 formed on the inner surface of the upper edge is placed over the tip of the fixing bolt 20, and the lower end of the cover is fixed to the side of the cross member 14 of the membrane end fixing frame 10 with a screw 42 (Fig. 3(d), Fig. 4(d)).

[0027] If the tension in the membrane material 1 decreases after the membrane roof has been in service, it is easy to reintroduce tension to the membrane material 1. To reintroduce tension to the membrane material 1, remove the decorative cover 40, tighten the anchoring height adjustment nuts 17 attached to the anchoring bolts 20 to lower the nut position by an appropriate amount, lower the position of the membrane material end 1a sandwiched between the two membrane end pressure plates 30 (membrane end lower surface pressure plate 31, membrane end upper surface pressure plate 32), and then tighten the pressure nuts 18. In this way, tension can be reintroduced to the membrane material 1 with the anchoring height adjustment nuts 17, the two membrane end pressure plates 30, the membrane material end 1a, and the pressure nuts 18 integrated together.

[0028] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. In other words, embodiments obtained by combining technical means modified appropriately within the scope of the claims are also included in the technical scope of the present invention. [Explanation of symbols]

[0029] 1 Membrane material 2 Pipe structure 10. Film end fixing frame 12 Vertical members 17 Fixing height adjustment nut 18 Press nut 20 Fixing bolt 30 Membrane edge pressure plate 31 Membrane end lower surface pressure plate 32 Membrane end upper surface pressure plate 40 Makeup Cover

Claims

1. An anchoring structure for fixing and holding the end of the membrane material stretched on the structural support, a membrane end fixing member connected along the longitudinal direction of the side end of the structural support; Anchoring bolts, each having a fixing height adjusting nut and a fixing pressure nut threadedly engaged with a shaft portion, a film end clamping means held between the fixing height adjusting nut and the fixing pressure nut, and arranged on the film end fixing member at predetermined intervals along the longitudinal direction of the structural support; a membrane end clamping means that is passed through and held by each bolt shaft of the fixing bolt and clamps the end of the membrane material; Equipped with The fixing bolt is fixed and held to the membrane end fixing member so that the bolt axis is approximately perpendicular to the stretched surface of the membrane material, A fixing structure for a membrane material end, characterized in that a locking hole formed in the end of the membrane material is inserted into the fixing bolt, the end of the membrane material is clamped by the membrane end clamping means, the membrane end clamping means is moved along the axial direction of the bolt, and tension is introduced into the membrane material by creating a step between the surface of the expanded membrane material and the surface of the membrane end clamping means, thereby fixing and holding the end of the membrane material.

2. 2. The fixing structure for a membrane material end according to claim 1, wherein the membrane end fixing member has a pocket-shaped groove formed along the longitudinal direction of the member, capable of accommodating the bolt head of the fixing bolt.

3. The film end clamping means is a long member consisting of a film end upper surface pressure plate and a film end lower surface pressure plate, and the end of the film material is clamped between the film end upper surface pressure plate and the film end lower surface pressure plate, and is fixed and held in place by applying a compressive force to the end of the film material by tightening the fixing height adjustment nut and the fixing pressure nut.

4. 4. The membrane material end fixing structure according to claim 3, wherein the membrane end clamping means has a holding position set by adjusting the height of the fixing height adjusting nut.

5. A fixing structure for a membrane material end as described in claim 3, wherein the membrane material is bent back at a portion of the upper end of the membrane end fixing member and a portion of the membrane end upper surface pressing plate, and the locking hole is inserted into the fixing bolt.

6. 2. The membrane material end fixing structure according to claim 1, wherein the membrane material end is covered with a decorative cover fixedly held by the membrane end fixing member and the fixing bolt.

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