JPH0557241U - Membrane connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To apply uniform tension continuously over the entire length of the connection end of the membrane body, and to remarkably improve the sealing property. [Structure] A connecting member 32 is arranged so as to straddle between the connection ends of the film pieces 30a to be connected to each other. Connecting member 32
Are continuously arranged along the connection end of the membrane piece 30a. A pair of engaging portions 36, which are curved in opposite directions, are formed at both ends of the connecting member 32. Neoprene rubbers 38a and 38b are provided on both surfaces of the connection end of the film piece 30a. A fitting member 40 is provided on the engaging portion 36, and the neoprene rubber 38
The connection end of the membrane piece 30a held by a is sandwiched by the engaging portion 36. A pressing member 46 is provided between the pair of fitting members 40 to press the fitting member 40 toward the engaging portion 36.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a connecting structure for connecting respective connecting end portions to each other while continuously applying substantially uniform tension over the entire length of the connecting end portions of a film body.

[0002]

[Prior Art]

 In recent years, there has appeared a structure in which the roof of a structure such as a large space facility having a pillarless structure such as a dome is used as a membrane roof. This membrane connection structure covers the upper end of the outer wall surrounding the large space facility with a membrane made of a waterproof flexible membrane. The membrane roof is inflated by injecting air into the facility, and in the inflated state, a dome-shaped roof having a bulged central portion is formed.

By the way, since the membrane roof needs to continuously cover a large space facility, its area becomes remarkably large. Therefore, the membrane body constituting the membrane roof has a plurality of membrane pieces arranged on top of each other. The whole is formed by connecting them. At this time, the connection between the membrane pieces is made via a connecting fitting as disclosed in, for example, Japanese Utility Model Publication No. 2-24857 (E04H 15/54). That is, the connecting fitting is provided with inner and outer presser fittings which are arranged on both sides of the film body across the connecting end portions of the membrane piece, and the presser fittings on both sides are arranged at appropriate intervals, It is configured to be tightened via nuts. Further, since the connecting end portions of the membrane piece are sandwiched between the presser pieces, it is possible to prevent the connecting portion from being easily separated even when a large tension is applied to the membrane body. There is.

[0004]

[Problems to be solved by the device]

 However, in such a conventional connecting structure for membranes, the inner and outer presser fittings provided on the connecting fittings for connecting each membrane piece should be tightened at appropriate intervals via bolts and nuts. Has become. Therefore, the tension acting between the membranes connected to each other concentrates on the tightened portions of the bolts and nuts, and the membranes are easily damaged at the tension concentrated portions. The durability will be significantly reduced.

Further, in the connection part of the above-mentioned membrane body, a high liquid-tight function can be obtained between the membrane piece and the presser member in the vicinity of the tightened portion of the bolt and nut, but at a position away from the tightened portion, these Since the tightening force of the bolts and nuts is reduced, the liquid tightness is reduced, and there are various problems that rainwater and the like may enter.

In view of such conventional problems, the present invention can continuously apply uniform tension over the entire length of the connecting end portion of the film body and can significantly improve the sealing property thereof. It is intended to provide a connection structure of.

[0007]

[Means for Solving the Problems]

 In order to achieve such an object, the present invention is arranged straddling between the connection ends of the film bodies to be connected to each other, and is continuous along the connection ends of the film body, and opposite to each other at both ends. And a continuous flat elastic body sandwiching the connecting end portion, which is arranged on both sides of the connecting end portion of the film body and the connecting member in which the engaging portion curved in the direction of bending is formed, and the film body. A pair of continuous fitting members that are sandwiched between the engaging portions in a state where both surfaces of the connection end portion of the pair are sandwiched by the flat elastic body, and a pressing member that presses the pair of fitting members against the engaging portions. , And are configured.

Further, it is desirable that the connection end portion of the film body is wound around a core material and folded back.

Further, it is preferable that the pressing member is located between the pair of fitting members, and a central portion of the pressing member is pivotally attached to the connecting member so as to be rotatable.

[0010]

[Action]

 In the structure for connecting a film body according to the present invention having the above-described structure, the connection end portion of the film body is sandwiched by the flat elastic members, and the connection end portion is connected to the engaging portion of the connecting member via the pressing member. Since they are pressed against the fitting member, the film bodies to be connected to each other are respectively connected to the connecting member with a large fixing force. Further, since the connecting member, the flat plate-like elastic body and the fitting member are continuously formed, the connecting end portion of the film body is connected to the connecting member with substantially the same fixing force over its entire length. A substantially uniform tension can be continuously applied to the connection end.

Further, by winding the core material around the connection end portion of the film body and folding the core material back, the wound portion of the core material serves as a locking portion, and the film body is pulled out from the connecting portion of the connecting member. Can be prevented, and the film body can be connected more reliably.

Further, the pressing member is positioned between the pair of fitting members, and a central portion of the pressing member is pivotally attached to the connecting member so that the pressing of the fitting member is performed by the pressing member. This can be easily done by simply rotating, and the work of connecting the film bodies can be made easier.

[0013]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. 1 to 3 show an embodiment of a connecting structure of a membrane body according to the present invention, FIG. 1 is a schematic configuration diagram showing a cross section of a large space facility using a roof membrane to which the present invention is applied, and FIG. 2 is FIG. 1 is an enlarged perspective view showing a cross section of a main part of a connection part of the film body corresponding to the line AA in FIG. 1, and FIG.

That is, the large space facility shown in FIG. 1 is used as an indoor artificial ski resort 10. Outer walls 12 and 12 that are continuous in the direction perpendicular to the paper surface in the figure are constructed on both sides, and the upper ends of these outer walls 12 and 12 are constructed. A membrane roof 14 is stretched between the parts. The floor surface 18 of the large space 16 composed of the outer walls 12 and 12 and the membrane roof 14 is continuously inclined in the extending direction of the outer walls 12 and 12, and the inclined floor surface 18 is formed. A ski is constructed by accumulating artificial snow on top of which you can slide on the snow.

The membrane roof 14 is inflated by injecting air into the large space 16 in the solid line state in FIG. 1, and in the two-dot chain line state, the internal air pressure is The state where it is excluded and deflated (contracted) is shown. The membrane roof 14 is supported by a plurality of cables (not shown) installed between the upper ends of the outer walls 12 and 12. A machine room 24 and a lift room 26 are provided outside the outer walls 12 and 12, and an air conditioner, an artificial snowmaking machine, a snow gun and the like are installed in the machine room 24.

The film body 30 forming the film roof 14 is entirely configured by connecting the film pieces 30a to each other as shown in FIG. These film pieces 30a are connected via a connecting member 32.

The connecting member 32 is arranged so as to straddle between the connecting ends of the film pieces 30a to be connected to each other, and is a long body having a predetermined length L as shown in FIG. It is formed. Then, a plurality of connecting members 32 are bolted and nut-attached (not shown) through the joint plate 34, so that the connecting members 32 are continuously arranged along the connecting end portion of the membrane piece 30a.

Further, as shown in FIG. 2, the connecting member 32 has outer sides (inward and outward directions are determined at the center of the floor surface 18 shown in FIG. 1) at both ends of the connecting member 32. The same applies to the following), and a pair of engaging portions 36 that are curved in the directions opposite to each other are formed. On the other hand, neoprene rubbers 38a and 38b as flat plate-shaped elastic bodies, which are arranged on both sides of the connecting end portion and are sandwiched between the connecting end portions, are provided at the respective connecting end portions of the membrane piece 30a.

The pair of engaging portions 36 are U-shaped in cross section and are sandwiched by the neoprene rubber 38a on both sides of the connecting end portion of the film piece 30a. A pair of fitting members 40 are provided. The neoprene gums 38a, 38b and the fitting member 40 are continuously formed along the connecting member 32. The connecting end of the membrane piece 30a is wound around the rope 42 as a core member and folded back, and the folded-back portion is fused, while the connecting member 32 is fitted with the wound portion of the rope 42. A groove 44 is formed.

A pressing member 46 that presses the fitting members 40 toward the engaging portion 36 is provided between the pair of fitting members 40. The central portion of the pressing member 46 is pivotally attached to the outer surface of the connecting member 32 via a bolt 48. The lower end portion of the bolt 48 penetrates the connecting member 32, and the penetrated portion is fixed to the connecting member 32 via the washers 52a and 52b and the nut 52.

Further, after the pressing member 46 is inserted into the upper end portion of the bolt 48, a locking bolt 54 is screwed to the upper end portion thereof, and the locking bolt 54 prevents the pressing member 46 from coming off. In addition, the length L1 of the pressing member 46 is the above-mentioned value when the pressing member 46 is rotated in the direction perpendicular to the length L direction of the connecting member 32 (see FIG. 3) (the state shown in FIG. 2). The fitting member 40 is set so that an optimum pressing force can be applied.

By the way, it is desirable that a cover 56 be attached across the pair of fitting members 40 to prevent rainwater from entering the inside of the connecting member 32.

With the above structure, in the connecting structure of the film body of the present embodiment, both surfaces of each connecting end of the film piece 30a are sandwiched by the pair of neoprene rubbers 38a and 38b. The respective connection ends sandwiched by the neoprene rubbers 38a and 38b are sandwiched between the curved engaging portion 36 of the connecting member 32 and the fitting member 40 fitted into the engaging portion 36. Then, the pressing member 46 is rotated to the state shown in FIG. 2 to press the fitting member 40 toward the engaging portion 36, whereby the connecting end portion of the film piece 30a is engaged with the engaging portion 36 and the fitting member 40. The film pieces 30a that are pressed against each other and are about to be connected to each other are connected to the connecting member 32 with a large fixing force, respectively, so that the film pieces 30a are connected to each other.

Further, when the membrane pieces 30a are connected to each other via the connecting member 32 in this manner, the connecting member 32, the neoprene rubbers 38a and 38b, and the fitting member 40 are continuously formed. The connection end of the film body 30a is coupled to the connecting member 32 with substantially the same fixing force over the entire length. Therefore, even tension can be continuously applied over the entire length of the connecting end of the film piece 30a, so that the tensile stress is prevented from being concentrated at the connecting portion, and The durability can be improved and the sealing property of the connection portion can be greatly improved.

Further, since the connecting end portion of the membrane piece 30a is wound around the rope 42 and folded back, the wound portion of the rope 42 serves as a locking portion, and the membrane piece 30a joins the connecting member 32. Since it is possible to prevent the film body 30 from being pulled out, it is possible to more reliably connect the film body 30.

Furthermore, the pressing member 46 that presses the pair of fitting members 40 toward the engaging portion 36 is rotatably pivotally attached to the central portion of the pressing member 46 so that these fitting members 40 are fitted together. The pressing of the coupling member 40 can be easily performed by simply rotating the pressing member 46, and the connection work of the film body 30 can be further simplified.

In the present embodiment, since the connecting member 32 and the fitting member 40 can be formed of a plastic having high rigidity and flexibility, the remarkable weight reduction thereof can be achieved, and The weight of the roof membrane 14 itself can be reduced. Therefore, it is possible to set the overpressure inside the facility required when the roof membrane 14 is inflated to a low level, and it is possible to achieve downsizing of the blower.

Further, although the present invention discloses the case where the present invention is applied to the membrane roof 14 in the present embodiment, it is needless to say that the present invention is not limited to this and can be applied to connection of general membrane bodies.

[0029]

As described above, in the connecting structure for a film body according to claim 1 of the present invention, the connecting end portion of the film body is sandwiched between the plate-like elastic bodies and the connecting end portion is pressed. Since it is designed to press between the engaging portion of the connecting member and the fitting member via the member, it is possible to couple the film bodies to be connected to each other with a large fixing force to the connecting member. it can. Further, since the connecting member, the plate-like elastic body and the fitting member are continuously formed, the connecting end portion of the film body is connected to the connecting member with substantially the same fixing force over its entire length, and the connecting member is connected. It is possible to prevent the tensile stress from concentrating on the end portions, improve the durability of the film body, and improve the sealing property.

Further, according to the second aspect of the present invention, since the connecting end portion of the film body is wound around the core material and folded back, the wound portion of the core material serves as a locking portion. It is possible to prevent the body from being pulled out from the joint portion of the connecting member, and to more reliably connect the film body.

Further, according to a third aspect of the present invention, the pressing member is positioned between the pair of fitting members, and the central portion thereof is pivotally attached to the connecting member, The fitting member can be easily pressed by simply rotating the pressing member, and various advantageous effects can be obtained in that the work of connecting the film body can be further simplified.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a cross section of a large space facility using a roof membrane to which the present invention is applied.

FIG. 2 is an enlarged perspective view of an essential part of a portion corresponding to the line AA in FIG. 1 showing an embodiment of the present invention.

FIG. 3 is a schematic configuration diagram showing a connecting portion of a film body showing an embodiment of the present invention.

[Explanation of symbols]

10 Indoor Artificial Ski Resort (Large Space Facility) 12 Outer Wall 14 Membrane Roof 30 Membrane 30a Membrane Piece 32 Connecting Member 36 Engaging Parts 38a, 38b Neoprene Rubber (Plate-like Elastic Body) 40 Fitting Member 42 Rope (Core Material) 46 Pressing member

Claims (3)

[Scope of utility model registration request] 1. A film is disposed straddling between connection end portions of film bodies to be connected to each other, is continuous along the connection end portions of the film body, and is curved in a direction facing each other at both end portions. A connecting member on which an engaging portion is formed, a flat plate-like elastic body that is respectively disposed on both sides of the connection end of the film body, and sandwiches the connection end, and both sides of the connection end of the film body. A pair of continuous fitting members that are sandwiched by the engaging portion in a state of being sandwiched by the flat elastic body, and a pressing member that presses the pair of fitting members against the engaging portion. And the connection structure of the film body. 2. The connection structure for a film body according to claim 1, wherein the connection end portion of the film body is formed by winding and folding a core material. 3. The membrane according to claim 1, wherein the pressing member is located between the pair of fitting members, and a central portion of the pressing member is pivotally attached to the connecting member so as to be rotatable. Body connection structure.