JPH0457833B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) This invention relates to a membrane material fixing device for a membrane structure roof that fixes the ends of the membrane material constituting the membrane structure roof in a state where it can exhibit its maximum yield strength. It is something.

(Problem to be solved by the invention) The fixing of the membrane material constituting the membrane structure roof is done by sandwiching the core formed at the end between metal objects, etc., and tightening bolts thereto. Because it is necessary to prevent the bolts from slipping out of the hardware due to the tension of the core, the bolts are placed on the membrane material side with respect to the core. Therefore, in this structure, bolt holes are drilled in the membrane material, which increases the strength of this part. This may cause damage to the membrane material.

This invention was made by focusing on the problem of a structure for fixing the end portion of a membrane material using this bolt, and aims to propose a fixing device having a structure that allows the strength of the membrane material to be sufficiently exhibited.

(Means for Solving the Problems) In the present invention, the core formed at the end of the membrane material is fixed by the axial force of the bolt, using an extremely thick presser, or a similarly extremely thick presser that is restrained from the periphery by a presser. By fixing the core in a crimped state using the compressive force of the rubber block, the core can be prevented from slipping out, and the membrane material can exhibit its maximum yield strength.

The core is placed on the membrane material side of the presser foot, and the bolt is placed on the outer peripheral side of the membrane material with respect to the core, and the membrane material is crimped and fixed by the presser foot or rubber block without being penetrated by the bolt.

A presser foot crimped by tightening bolts,
The axial force of the bolt is transmitted almost evenly in the width direction to the rubber block, which has increased rigidity by restraining deformation from its surroundings, and the tightening force of the bolt acts directly on the core, which prevents the core from anchoring. The situation is the same as when fastening directly with bolts.

When sandwiching the core with extra-thick presser foot from above and below,
Alternatively, when one side is held between extremely thick pressers, a thin rubber is interposed on the side of the pressers to protect the core and membrane material and to adjust the compression state of the pressers.

(Example) The present invention will be described below based on drawings showing one example.

First, the first invention will be explained with reference to FIGS. 1 to 3.

The film material fixing device of the present invention includes two sheets of thin rubber 3, 3 that sandwich the core 2 formed at the end of the film material 1, and a pair of pressers 4, 4 that sandwich the thin rubber 3, 3 from both sides. It consists of a bolt 5 which is arranged on the outer circumferential side of the membrane material 1 with respect to the core 2 and presses down the presser fittings 4, 4, and when the bolt 5 is fastened, the membrane of the presser fittings 4, 4 presses the core 2 against the bolt 5. It is fixed on the material 1 side.

The thin rubber 3, 3 has a surface that is approximately equal to the pressing surface of the presser foot 4, 4, and the presser foot 4 has an extremely thick cross section that is difficult to deform as shown in the figure, and the surface on the side of the core 2 has a A groove-shaped fitting portion 4a into which this fits is formed. The fitting portion 4a is formed at a position relatively closer to the membrane material 1 than the bolt 5 in the cross section, for example, closer to the membrane material 1 than the center.

The presser foot 4 also has a piece on the outer circumference side of the membrane material 1 from the fitting part 4a, that is, on the opposite side to the membrane material 2 with respect to the core 2.
A bolt insertion hole 4b is bored at a position where the bolt 5 and the core 2 do not interfere with each other.

The core 2 is protected by thin rubber 3, 3 and is sandwiched between the pair of pressers 4, 4 which are vertically symmetrical with respect to the core 2, and by tightening the bolt 5, the bolt 5 is fixed without penetrating. Ru.

The portion of the membrane material 1 that is released from the ends of the pressers 4, 4 is protected by thin rubber 3, 3 that slightly protrudes from the pressers 4, 4 toward the membrane material 1 side, as shown.

In this invention, the core 2 is firmly pressed by the extremely thick pressers 4, 4, and is therefore fixed by a compressive force equal to the axial force of the bolt 5.

Next, the second invention will be explained with reference to FIGS. 4 to 6.

Formally, this invention replaces the thin rubber 3 of the first invention with an extremely thick rubber block 6, but structurally, the rubber block 6 corresponds to the presser foot 4 of the first invention, It plays the role of pressing down and crimping the core 2.

The presser foot 4-1 that presses down the thin rubber 3 is the same as that of the first invention as shown in the figure, and a complete presser foot 4-1 is installed on the rubber block 6 side in order to have the same function as the extra-thick presser foot 4-1. mating with, opposing 2
A presser foot 4-2 having a groove-shaped cross section and a flange in the direction is attached to the rubber block 6, and the rubber block 6 is restrained from its surroundings by the presser foot 4-2.

This rubber block 6 is restrained by the presser foot 4-2 and compressed by the bolt 5, so that its rigidity is increased and it has approximately the same crimping ability as the presser foot 4-1.

In the embodiment shown in FIGS. 4 and 5, the core 2 is formed close to either the upper or lower side of the membrane material 1.
The crimping surface of the rubber block 6 is flat, and grooves into which the core 2 is inserted are formed in each rubber block 6.

The embodiment shown in FIG. 6 is a case in which the core 2 is formed without eccentricity with respect to the membrane surface, but in this case, the crimping surface of the presser foot 4-1 on the thin rubber 3 side Similarly, a fitting block 4a is formed.

The positional relationship between the core 2 and the bolt 5 and the procedure for fixing the core 2 are the same as those of the first invention, and when the bolt 5 is fastened, the core 2 is crimped by the clamp 4-1 and the rubber block 6. It will be established.

Next, the procedure for connecting the membrane materials 1, 1 fixed as described above will be briefly explained with reference to FIG. 7, which shows an example.

The membrane materials 1 and 1 are interconnected by connecting the presser fittings 4, 4 to the angle piece 8 attached above the steel pipe 7 of the frame using presser bolts 9 arranged on the outer circumferential side of the core 2 in the same way as the bolts 5. It is done by doing.

This presser bolt 9 may be installed separately from the bolt 5 that fastens the presser fittings 4, 4, but the bolt 5
may also serve as the presser bolt 9.

The angle piece 8 is attached to a mounting bolt 11 that is inserted horizontally into a plate 10 that is joined vertically upward to the steel pipe 7.
are joined on the angle pieces 8, 8 with the respective pressers 4, 4 facing each other as shown in FIG.

(Effects of the Invention) This invention fixes the core by sandwiching it between extremely thick pressers or equivalent rubber blocks without passing bolts through the membrane material, so there is no possibility of damage to the membrane material. It is possible to exert its strength to its maximum yield strength without wasting it. As a result, it can be applied to various membrane structure roofs that maintain their shape through tension.

In particular, in the first invention, since the presser foot is sandwiched so as to cover the entire core, there are the following advantages compared to the case where the core is sandwiched through a block of rubber.

Since the core is completely fixed, there is no loss of membrane strength.

Costs can be reduced because the processing effort of the presser foot is saved and the amount of rubber is saved.

Since the presser foot is a rigid body, the stress transmission mechanism at the fixing part becomes clear.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the first invention, with FIG. 1 being a perspective view, and FIGS. 2 and 3 being sectional views. 4 to 6 are cross-sectional views showing an embodiment of the second invention, and FIG. 7 is a cross-sectional view showing a method of joining membrane materials. 1...Membrane material, 2...Core, 3...Thin rubber, 4,4
-1, 4-2... Presser foot, 4a... Fitting part, 4
b...Bolt insertion hole, 5...Bolt, 6...Rubber block, 7...Steel pipe, 8...Angle piece,
9... Holder bolt, 10... Plate, 11...
Mounting bolts.

Claims (1)

[Scope of Claims] 1. A pair of extremely thick pressers having a groove-like fitting part with a cross-sectional shape into which a core formed at the end of the membrane material fits, and a presser foot that is approximately equal to the pressing surface of the presser metals. It consists of two thin rubber sheets that have a surface and are pressed against the presser foot and sandwich the core, and a bolt that is inserted into a bolt hole drilled on the opposite side of the core from the membrane material and presses the presser foot. A membrane material fixing device for a membrane structure roof, characterized in that the core of the end of the membrane material is crimped by the axial force of a bolt by fastening and crimping a presser foot. 2. An extremely thick rubber block having a thin rubber that sandwiches the core formed at the end of the membrane material and a fitting part that fits the core in the longitudinal direction, and respective extremely thick pressers that sandwich the thin rubber and the rubber block from both sides. , a presser foot shaped to fit a rubber block, and a bolt that is inserted into a bolt hole drilled on the opposite side of the core from the membrane material and presses down the presser foot. have approximately equal surfaces,
1. A membrane material fixing device for a membrane structure roof, characterized in that a bolt is fastened, a presser foot is crimped, and a core of the end of the membrane material is crimped by bolt axial force.