JP2876941B2 - Connection structure of membrane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a membrane, and more particularly to a connecting structure for a membrane in which the rigidity of the connecting portion of the membrane in the swinging direction is reduced.

[0002]

2. Description of the Related Art In recent years, there has appeared a structure in which a roof of a large space facility or the like having a pillarless structure such as a dome is constructed as a membrane roof. This membrane roof is formed of a waterproof flexible membrane, and covers the upper end of the outer wall surrounding the large space facility. The membrane roof is inflated (expanded) by injecting air into the inside of the facility, and a dome-shaped roof whose central portion is expanded in this inflated state is formed. The inflated membrane roof is supported by cables stretched at appropriate intervals.

Since the membrane roof needs to continuously cover large space facilities, the area of the membrane roof becomes significantly large. Therefore, this membrane roof connects a plurality of membrane bodies cut into a predetermined shape to each other. The whole is formed. At this time, the connection between the film bodies is performed via a connection fitting as disclosed in, for example, Japanese Utility Model Publication No. Hei 2-24857 (E04H 15/54). That is, the connection fitting includes inner and outer presser members disposed on both sides of the film member so as to straddle between the connection ends of the film member. It is configured to be tightened via a nut. Then, the connection end portions of the film body are sandwiched between the presser fittings,
Even when a large tension acts on the film body, it is possible to prevent the connection portion from being easily separated.

[0004]

However, in such a conventional connection structure for a film body, a bolt and a nut are tightened with the connection end of the film body to be connected between the inner and outer presser fittings sandwiched therebetween. Therefore, the connection between the film bodies is performed in a rigidly connected state. Therefore, when the film roof is fluttered and the angle between the film members connected to each other is changed, the respective film members are swung about both side edges of the inner and outer presser foot. The bending is repeated locally at this edge portion. For this reason, the fatigue occurs in the locally bent portion of the film body, and the film body is easily damaged in the portion,
As a result, there is a problem that the durability of the film body is significantly reduced.

In view of the above-mentioned problems, the present invention makes it possible to relatively open and close the connecting portions of the membrane, thereby preventing local bending of the membrane itself and greatly improving the durability. It is an object of the present invention to provide a connection structure of a film body that can be used.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a cable arranged at least along a connecting portion of the membrane, and the cable supports the membrane. in the connection structure, a pair of hinge members attaching portion is opened and closed as a pivot axis of this cable to the outer periphery of the cable is provided, the hinge member and the cable
A sliding tube is interposed between the hinged member and the connecting end of the membrane to be connected to each mounting portion of the hinge member , thereby connecting the membrane via the hinge member. .

[0007]

Further, it is preferable that the connecting films are branched in a bifurcated manner from the connection ends of the film body, and these connecting films are connected in an airtight structure so as to cover the connection portions of the film body.

[0009]

With the above structure, in the connection structure of the membrane according to the present invention, the connection end of the membrane to be connected is fixed to the pair of mounting portions of the hinge member having the cable as the rotation axis . Said
A sliding tube was interposed between the cable and the hinge member.
When the angle of the connecting portion is changed by the swing of the film body due to the fluttering, the angle change can be tolerated by the opening / closing operation of the attachment portion of the hinge member, so that the film body itself is locally bent. Can be prevented and also of the slide tube
Smooth opening and closing operation of a pair of mounting parts by lubrication function
Can apply excessive force to the connection end of the membrane
Can be significantly reduced.

[0010]

Further, the connecting films are branched in a bifurcated manner from the connection ends of the film members, and these connecting films are connected in an airtight structure by covering the connection portions of the film members. Can be prevented from leaking.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show one embodiment of a connection structure of a film body according to the present invention. FIG.
FIG. 3 is a perspective view in which a main part of a film body connection portion is sectioned.

That is, as shown in FIGS. 1 and 2, in the connection structure of the membrane of the present embodiment, a cable 12 is routed between the connecting portions of the membranes 10 to be connected to each other. The films 10, 10 connected to each other by the cable 12 are supported. The membranes 10, 10 are connected via a number of hinge members 14 having a pair of mounting portions 14a, 14a that are opened and closed with the cable 12 as a rotation axis. That is, the hinge member 14 is connected to the cable 1.
A pair of tubular portions 14 surrounding the outer circumference of the second so as to be relatively rotatable.
b, 14b, and the mounting portions 14a, 14a are integrally provided so as to extend from these tubular portions 14b, 14b in directions opposite to each other. A sliding tube 15 coated with a metal sliding agent is interposed between the tubular portion 14b of the hinge member 14 and the outer periphery of the cable 12.

On the other hand, the connection ends 10a, 10a of the membranes 10, 10 are folded by winding the strings 16, 16, and the folded portions are fused. On the upper surfaces of the connection ends 10a, 10a, the base ends of the connecting films 18, 18 are respectively fused to positions inward from the wound portions of the strings 16, 16 by a predetermined distance, and these connecting films are bonded. Reference numerals 18 are provided in a bifurcated manner from the film bodies 10.

The connection ends 1 of the film members 10
Reference numerals 0a and 10a denote attachment portions 14a and 1 of the hinge member 14, respectively.
4a are disposed on the upper surface of the connecting ends 10a, 10a via the packings 20, 20, and the holding plate 2
2 and 22 are arranged, and the stacked mounting portion 14a, packing 20, connection end portion 10a and holding plate 22 are tightened and fixed via bolts 24 penetrating therethrough and nuts 24a screwed thereto. It has become so.

Also, the membrane members 10 are connected to hinge members 14.
After being attached to the attachment portions 14a, 14a,
The connecting portions of the film bodies 10 are covered with connecting films 18, 18 branched in a bifurcated manner from the connecting members a, 10 a, and their respective ends are connected via a fastener 26 in an airtight structure.

With the above structure, the hinge member 1 having the cable 12 as a rotation axis is provided in the membrane connection structure of the present embodiment.
4 and a pair of mounting portions 14a, 1 of the hinge member 14 are provided.
Connection end portion 10 of the film body 10 to be connected to 4a
a, 10a are fixed, so that the film bodies 10,
Reference numeral 10 allows the relative angle to be freely changed by the opening and closing operation of the mounting portions 14a, 14a of the hinge member 14.
Therefore, when the angle of the connecting portion is changed by the swinging of the film bodies 10 and 10 due to the fluttering, the angle change can be tolerated by the hinge member 14, and the film bodies 10 and 10 themselves are locally bent. Can be prevented. Therefore, since the films 10, 10 are prevented from being fatigued by local bending, the durability of the film 10 can be greatly improved.

Further, in this embodiment, since the slide tubes 15, 15 are interposed between the cable 12 and the tubular portions 14b, 14b of the hinge member 14, the slide tubes 15, 1 are provided.
With the lubrication function of No. 5, the opening and closing operations of the respective mounting portions 14a, 14a can be performed smoothly. Therefore, the film body 1
Even when the 0 and 10 are rocked, the application of an unreasonable load to the connection ends 10a and 10a is significantly reduced, and the durability of the film bodies 10 and 10 can be further improved.

By the way, when the membranes 10, 10 are connected via the hinge member 14, airtightness is impaired at the connecting portions of the membranes 10, 10 due to the opening / closing operation of the hinge member 14. Then, the connection end portion 1 of the film body 10
Since the connecting films 18, 18 branched from 0 a, 10 a, respectively, are connected in an air-tight structure via the fastener 26, it is possible to reliably prevent air from leaking from the connecting portions of the film bodies 10, 10.

[0020]

As described above, in the membrane connection structure according to the first aspect of the present invention, the membrane to be connected to the pair of mounting portions of the hinge member having the cable as the rotation axis. Between the cable and the hinge member.
Since the sliding tube is interposed in the opening, the swing of the connecting portion of the membrane is allowed by the opening and closing operation of the mounting portion of the hinge member, and the membrane itself can be prevented from being locally bent ,
As a result , it is possible to prevent the membrane from being damaged by local fatigue and to significantly improve the durability.
Function to smoothly open and close the pair of mounting parts,
Significant reduction of excessive load on the connection end of the body
And, consequently, the durability of the membrane can be further improved.
You.

Further, according to claim 2 of the present invention, the film
Branch the connecting membrane bifurcated from the connection end of the body.
These connecting films cover the connecting part of the film body and have an airtight structure
Connection, make sure that air leaks from the membrane connection.
It has various excellent effects that it can actually be prevented
You.

[0022]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a film body connection portion showing one embodiment of a film body connection structure of the present invention.

FIG. 2 is a perspective view showing a cross section of a main part of a film body connection portion showing one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Membrane body 10a Connection end part 12 Cable 14 Hinge member 14a Attachment part 18 Connecting membrane 26 Fastener

Claims (2)

(57) [Claims] 1. A connecting structure for a membrane, comprising a cable routed at least along a connecting portion of the membrane, wherein the cable is pivoted around an outer periphery of the cable. a pair of hinge members attaching portion is opened and closed as the shaft, the hinge member and the cable
By connecting a sliding tube between the hinged member and the connecting end of the membrane to be connected to each mounting portion of the hinge member , the membrane is connected via the hinge member. The connection structure of the membrane. 2. A bifurcated shape from a connection end of the film body.
The connecting films are branched and the connecting films are covered with the connecting parts of the film body.
The connection structure of the film body according to claim 1, wherein the connection is performed in an airtight structure.