JPH0140914Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the mounting structure of a double membrane, which is made for the purpose of improving fire prevention performance in an air membrane structure, improving safety, and improving heat insulation, sound absorption, and sound insulation performance.

The so-called air membrane structure is, as shown in the plan view of Fig. 1, a compression ring 1 provided around the building, wires 2... stretched in accordance with the scale of the building, and a membrane material 3... between the wires 2... The structure is such that the roof surface is supported by pneumatic pressure, and a pressure greater than the weight per unit area of the roof surface is applied inside the building. This is done by performing a joint process on two wires between the ends of the cut membrane material 3 to the desired area. Immediately, as shown in FIG. 2, attach U-bolts 4 to the wire 2 at predetermined intervals, fasten the holding fitting 5, spacer 6, plate fitting 7, plate member 8, etc. to the U-bolt 4 with nuts 9, and then tighten the wire. A plate surface (plate member 8) for the membrane material joint is attached to 2, and on this, the end of the membrane material 3 is folded back and heat welded, and a rim portion into which a rope is inserted into the processed bag-shaped portion is attached. The membrane material 3 is fixedly attached to the wire 2 by being pressed and latched onto a bolted presser 10. The seal between the adjacent membrane materials 3, 3 is achieved by holding one end of the cover 11 in place with the holding tool 10, and fitting the other end of the cover 11 into the embedded part 12 provided upright in the center of the plate fitting 7. This is done by inserting and fixing into a clamping groove formed in the gasket 13.

In such an air membrane structure, it is possible to protect the outer membrane from fire by adding a double layer to the inner membrane (improving fire resistance performance), and also to improve insulation, sound absorption, and sound insulation performance as necessary. However, in the conventional method of attaching the inner membrane, as shown in FIG. A knot rope 20 (details shown in figure b) is wrapped around the wire 2 (only one is shown in the figure, but the other is also present).

However, the narrative structure has the following difficulties.

(1) The inner membrane 18 serves as a sacrifice to the outer membrane 3 and absorbs heat, but the heat welded part 15 at the edge of the membrane is thermocompression bonded at about 370°C. When exposed to heat, the welded portion (glass fiber membrane) will melt, peeling will occur, the thickness will become thinner, the strength will decrease, and there is a risk that the ends of the membrane material will be cut by the tied rope 20 and fall off.

(2) There is a large gap between adjacent endometrial ends that are pulled together by the tying rope 20, and the wire is exposed in the center of the gap, resulting in insufficient heat protection for the wire, which is important in the membrane support structure. .

This proposal was made in view of the above circumstances, and its gist is to assemble a U-bolt to the wire in a position with the opening on the lower side, and to install a presser fitting that presses against the wire between the tips of the U-bolt. The above-mentioned difficulties are solved by fastening the intimal end portions that abut each other on the lower surface of the holding metal fittings with nuts attached to the U-bolts through the holding metal fittings.

This will be explained in detail below based on the drawings.

FIG. 3 shows a mode in which the present invention is implemented at the cross section of the high wire 21 and the low wire 22. As is clear from the figure, in this example, the outer membrane 3 joint configuration is used, and the presser metal fitting 23 is placed in the middle of the U bolt. A fixed aluminum channel 25 is inserted and fixed into a large aluminum channel 26 via a spacer 24 at the tip of the U bolt to match the outer membrane joint level of the high wire 21. are doing. In addition, in the figure, 27 is a condensation catcher, 28 is a presser for holding the end of the outer membrane 3 on the large aluminum channel 26 with bolts, and 29 is a cover for covering the presser 28; It is clamped by the presser 28, and the thick portion 30 of the other end is fitted into a protrusion on the side end of the presser 28. Reference numeral 31 indicates a gasket that is inserted and attached between the thick portions.

In this outer membrane joint configuration, the present invention attaches the U bolt 32 downward to the low wire 22 as shown in the figure, and assembles the holding metal fitting 33 on the lower side to form a plate surface for the membrane joint on the lower side. The end of the intima 18 is pressed and latched via the presser 34. Therefore, the inner membrane 18 is attached directly under the wire in a bonded manner, and the folded welded portion at the end of the membrane material is under the grip of the presser 34, so that the wire 22 is covered and protected without being exposed. Even if heat is applied that would cause the folded welded part of the membrane material end to peel off, it will continue to be folded and kept in a stacked state, so there will be no cutting or unraveling at this part, and protection for the outer membrane will be maintained, which is a drawback of the conventional method. can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the membrane structure, FIGS. 2a and 2b are explanatory diagrams of a conventional double membrane mounting structure, partially enlarged in detail, and FIG. 3 is a diagram of one embodiment of the present invention. 22...low wire, 32...U bolt, 33
... Presser fitting, 34... Presser fitting, 18... Intima.

Claims (1)

[Scope of utility model registration request] Attach a U-bolt to the wire in a position with the bottom opening open, and install a holding fitting that presses against the wire between the tips of the U-bolt, and attach the inner membrane ends that abut each other on the lower surface of the holding fitting through the holding fittings. The corresponding U
A mounting structure for a double membrane in an air membrane structure, characterized in that it is fastened with a nut attached to a bolt.