JPH05231048A - Membrane connecting structure - Google Patents

Abstract

PURPOSE:To greatly enlarge the durability of a membrane by continuously applying an uniform tension over the overall length of the connecting end part of the membrane. CONSTITUTION:A joint member 32 is laid bridging between the inner surfaces of the connecting end parts of membrane pieces 30a. A plurality of such joint member 32 formed in a strip-like long length member are connected together in its longitudinal direction. A pair of strip-like retaining members 36 which are continued along the joint member 32 are arranged being opposed together. The connecting end parts of the membrane pieces 30a are clamped between the joint member 32 and the retaining members 36. Concave and convex parts 38, 40 are formed on the opposing surfaces of the joint member 32 and the retaining members 36. The pair of the retaining members 36 are pressed in a direction in which they approach the joint member 32 by means of a pressing mechanism 42. An arm 46 are movably fitted onto the front end part of a shank 44 projected from the center part of the joint part 32, and opposite end parts of the arm 46 coupled to the retaining members 36 through the intermediary or rods 52 so as to constitute the pressing mechanism 42.

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 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]

2. Description of the Related Art In recent years, there has appeared a structure in which a roof of a structure such as a large space facility having a pillarless structure such as a dome is constructed as a membrane roof. In this membrane connection structure, the upper end of the outer wall surrounding the large space facility is covered with a membrane made of a waterproof flexible membrane. The membrane roof is inflated (inflated) by injecting air into the facility, and a dome-shaped roof having a bulged central portion in the inflated state is configured.

By the way, since the membrane roof needs to continuously cover a large space facility, its area is remarkably large. Therefore, the membrane body constituting this membrane roof is formed by connecting a plurality of membrane pieces to each other. The whole is formed. At this time, the connection between the membrane pieces is, for example,
No. 24857 (E04H 15/54). That is, the connection fitting is provided with inner and outer presser metal fittings arranged on both sides of the film body across the connecting end portions of the membrane piece, and bolts for disposing the presser metal fittings on both sides at appropriate intervals, It is configured to be tightened via a nut. The connecting end portions of the membrane pieces are sandwiched between the presser pieces, so that the connecting portions can be prevented from being easily separated even when a large tension is applied to the membrane body. ..

[0004]

However, in such a conventional connecting structure for a film body, the inner and outer presser members of the connecting fittings for connecting the respective film pieces are appropriately spaced via the bolts and nuts. When tightened with, the bolts penetrate the connecting end of each membrane body. Therefore, the tension acting between the film bodies connected to each other is concentrated and acts on the tightened portion where the bolt is penetrated, and the film body is easily damaged at the tension concentrated portion. However, there was a problem that the durability of the

In view of the conventional problems, the present invention significantly improves the durability of the film body by continuously applying an equal tension over the entire length of the connection end of the film body. It is an object of the present invention to provide a connection structure of a film body capable of performing the above.

[0006]

In order to achieve the above object, the present invention is arranged so as to straddle one side of the connection ends of the film bodies to be connected to each other, and to be continuous along these connection ends. A connecting member and a pair of holding members located at both ends of the connecting member and arranged on the other side surface of the film body and continuous along the connecting member. The connecting member and the holding member face each other. A concavo-convex portion is formed on at least one of the surfaces, and the connecting end portions of the film body are respectively sandwiched between the connecting member and the pair of pressing members, and the connecting end portions of the film bodies facing each other are located. A pressing mechanism that presses the pressing member and the connecting member in the proximity direction is provided between the central portion of the connecting member and the pair of pressing members.

Further, the pressing mechanism is fixed to the shank protruding from the central portion of the connecting member on the side where the film body is arranged, and is fixed to the shank so as to be positionally adjustable, and is arranged so as to straddle between the pair of pressing members. The arm is pivotally mounted between the arm and both ends of the arm and the pair of holding members, and the holding member side pivot point is inclined to the shank side from the arm side pivot point. And a pair of rods.

[0008]

In the structure for connecting a film body according to the present invention having the above-described structure, the connection ends of the film body are respectively provided between the both ends of the connecting member and the pair of holding members located at the both ends. By sandwiching and pressing the connecting member and the pressing member in the proximity direction via the pressing mechanism, the connecting ends of the film body can be clamped between these members to connect the film bodies to each other. .. At this time, since the connecting member and the pressing member are continuously formed, the connecting end portion of the film body is connected to the connecting member with substantially equal fixing force over the entire length thereof, and the connecting end portion is substantially connected to the connecting end portion. Equal tension can be applied continuously. Further, since the concavo-convex portion is formed on at least one of the facing surfaces of the connecting member and the pressing member, the fixing force of the connecting end portion of the film body sandwiched between these members is remarkably increased, and the film is extended. It is possible to increase the connection power of the physical comrades. By the way, when the connecting member and the pressing member are pressed through the pressing mechanism in this way, the pressing mechanism includes a central portion of the connecting member and a pair of pressers which are located between the connecting end portions of the film bodies opposed to each other. It is provided between the member. Therefore, it is not necessary to form an opening such as an eyelet at the connection end of the film body, and it is possible to prevent the tensile stress from concentrating on the connection end together with the continuous application of the tension. At the same time, the sealability of this connecting portion can be greatly improved.

Further, the pressing mechanism is fixed to the shank protruding from the central portion of the connecting member on the side where the film body is arranged, and is fixed to the shank so as to be positionally adjustable, and arranged across the pair of pressing members. The arm is pivotally mounted between the arm and both ends of the arm and the pair of holding members, and the holding member side pivot point is inclined to the shank side from the arm side pivot point. Since a pair of rods are provided, the pressing force is transmitted to the pressing member via the rod by pressing the arm toward the pressing member and fixing it to the shank, and the pressing force is constantly applied to the pressing member. Can be operated. Then, in the state in which the arm is pressed in this way, since the pivot point of the pressing member side is inclined to the shank side from the pivot point of the arm side, the connecting end is pulled by the tensile force acting on the film body. When the force for moving the portion acts on the pressing member, a component force for pressing the pressing member in the connecting member direction is exerted by the inclined rod, and the clamping force of the connecting end portion can be further increased.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 to 3 show an embodiment of a connection 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 of a cross section of a main portion of a connecting portion of the film body corresponding to the line AA in FIG. 1, and FIG. 3 is an explanatory view schematically showing a main portion of the connecting portion of the film body.

That is, the large space facility shown in FIG. 1 is used as an indoor artificial ski resort 10. Outer walls 12 and 12 are formed on both sides in the direction perpendicular to the plane of the drawing, 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 portion 16 formed by 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 floor surface 18 is artificially attached to the inclined floor surface 18. It is possible to glide on the snow by forming snow on the slope.

The membrane roof 14 is inflated by injecting air into the large space portion 16 in the solid line state in FIG. 1, and the internal air pressure is eliminated in the two-dot chain line state. The deflated (contracted) state is shown. The membrane roof 14 is supported by a plurality of cables 20 (shown by chain double-dashed lines in FIGS. 2 and 3) installed between the upper ends of the outer walls 12, 12. Further, a machine room 24 and a lift room 26 are provided outside the outer walls 12, 12, and the machine room 2
An air conditioner, an artificial snowmaking machine, and a snow gun are installed at 4.

The membrane body 30 constituting the membrane roof 14 is constructed as a whole by connecting the membrane 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 determined by the inner side surface of the connecting end portions of the membrane pieces 30a to be connected to each other (inward and outward directions are determined with the floor surface 18 shown in FIG. 1 as the center, and in FIG. Is the inner side and the upper side is the outer side. The same applies hereinafter) and is formed as a strip-shaped elongated body having a predetermined length. Then, the plurality of connecting members 32 are connected to each other in the length direction via the connecting plate 34, so that the connecting members 32 are connected to the film piece 30.
It is arranged continuously along the connection end of a. A pair of strip-shaped pressing members 36, which are continuous along the connecting member 32, are arranged opposite to each other outside the both ends of the connecting member 32. The connecting end portions of the membrane pieces 30a to be connected to each other are sandwiched between both end portions of the connecting member 32 and the pair of pressing members 36. Further, concavo-convex portions 38 and 40 are formed on the opposing surfaces of the connecting member 32 and the pressing member 36, respectively, and the connecting end portion of the film piece 30a is sandwiched between the concavo-convex portions 38 and 40.

The pair of pressing members 36 are pressed by a pressing mechanism 42 in the direction of approaching the connecting member 32. The pressing mechanism 42 is outward (upward in the drawing) from the central portion of the connecting member 32 in which the connection end portions of the membrane pieces 30a facing each other are located.
The shank 44 is projected toward the
And an arm 46 that is fitted so that its vertical position can be adjusted.
The arm 46 is disposed so as to straddle between the pair of pressing members 36, and a fitting portion 46 a fitted to the shank 44 is formed in the center thereof. A screw 48 is provided on the fitting portion 46a.
Are screwed together, and by tightening the screws 48, the arm 46 is fixed to the shank 44.

A pair of rods 52 are pivotally attached to both ends of the arm 46 via pins 50, and the tips of these rods 52 are rotated via pins 56 to a catcher 54 provided on the pressing member 36. Movably pivoted. At this time, as shown in FIG. 3, the rod 52 is inclined so that the pivot point 56 on the pressing member 36 side is located closer to the shank 44 side than the pivot point 50 on the arm 52 side.

By the way, the connecting end portion of the film piece 30a is wound around the cord body 58 and folded back, and the folded back portion is fused. Then, the winding portions 60 of the cord body 58 at the connecting end portions are respectively locked to the end faces on the opposite side of the pair of pressing members 36, and the film piece 30a is connected to the connecting member 32.
It is prevented from being pulled out from between the holding member 36 and the holding member 36.
The shank 44 of the pressing mechanism 42 has its lower end in the drawing penetrating the connecting member 32 and is fixed by being screwed into a bolt 62 with a nut arranged inside the connecting member 32. Then, the cable 20 is supported on the upper end portion of the shank 44 in the figure, and the secondary cable (not shown) is supported by the nut bolt 62.

In the structure for connecting the film bodies of the present embodiment having the above structure, when the film pieces 30a are connected to each other, the screw 48 for fixing the arm 46 of the pressing mechanism 42 is loosened,
The membrane piece 3 to be connected to each other between both ends of the connecting member 32 and the pair of pressing members 36 located at the both ends.
The connection ends of 0a are respectively clamped. Then, the arm 46 is pressed downward and the screw 48 is tightened to fix the arm 46 to the shank 44. Then, the pressing force of the arm 48 is applied to the pressing member 3 via the rod 52.
6, the pressing force in the approaching direction of the connecting member 32 is constantly applied to the pressing member 36, and each film piece 30a
It is possible to clamp and fix the connecting end portion between the connecting member 32 and the pressing member 36. Therefore, the film piece 30a
The comrades are connected to each other via the connecting member 32 and the pressing member 36, and the connecting work can be greatly simplified.

At this time, since the connecting member 32 and the pressing member 36 are continuously formed along the connecting end of the film body 30a, the connecting end of the film piece 30a extends over its entire length. Therefore, they are coupled to the connecting member 32 with substantially the same fixing force. Therefore, substantially uniform tension can be continuously applied to the connection end of the film piece 30a over the entire length thereof. For this reason, the sealing property between the connecting member 32 and the pressing member 36, that is, the sealing property of the connecting portion of the film body 30 is significantly improved, and the intrusion of rainwater can be prevented.

Also, the connecting member 32 and the pressing member 3
Since the concavo-convex portions 38 and 40 are formed on the opposing surfaces of 6, respectively, the connection end of the film body 30a is sandwiched between the concavo-convex portions 38 and 40, and the fixing force of the film piece 30a is significantly increased. As a result, the connection force between the film bodies 30 can be increased.

By the way, the pressing mechanism 42 includes the arm 4
Since the rod 52 connecting the 6 and the pressing member 36 is inclined so that the pivot point 56 on the pressing member 36 side is located on the shank 44 side from the pivot point 50 on the arm 52 side, the membrane piece 30a. When the connecting end portions are moved in the directions in which they are separated from each other by the tensile force acting on the film piece 3
The pressing member 36 also tries to move with 0a. At this time, as shown in FIG. 3, the tilted rod 52 tends to rotate about the pin 50, so that the pressing member 3 is rotated.
A component force F2 that pushes in the direction of the connecting member 32 against the moving force F1 acting on 6 is generated. This component force F2 further increases the clamping force of the connecting end portion of the membrane piece 30a, so that the membrane piece 30a can be prevented from being pulled out from between the connecting member 32 and the pressing member 36. ..

The pressing mechanism 42 includes a shank 44.
Are projected from the central portion of the connecting member 32 where the connection end portions of the membrane pieces 30a facing each other are located.
Since the arm 46 and the rod 52 are provided in the above, other members do not penetrate the connecting end portion of the film piece 30a when the pressing member 36 is pressed in the direction of the connecting member 32.
Therefore, it is not necessary to form an opening such as an eyelet at the connection end of the film piece 30a, and the tension of the film body 30 is continuously applied to the entire length of this connection end, and this connection is performed. It is possible to prevent the tensile stress from concentrating on the ends, and it is possible to remarkably improve the durability of the film body 30.

Further, although the case where the present invention is applied to the membrane roof 14 is disclosed 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.

[0023]

As described above, in the connecting structure of the film body according to the first aspect of the present invention, the connecting end part of the film body is sandwiched between both end parts of the connecting member and the pair of pressing members. At the same time, the membrane members are connected to each other by pressing the connecting member and the pressing member in the proximity direction via the pressing mechanism, and at this time, the connecting member and the pressing member are continuous. Since it is formed as described above, substantially uniform tension can be continuously applied to the connection end portion of the film body. Further, since the concavo-convex portion is formed on at least one of the facing surfaces of the connecting member and the pressing member, the connecting force between the film bodies can be increased. Further, since the pressing mechanism is provided between the pair of pressing members and the central portion of the connecting member where the connection end portions of the film bodies facing each other are located, an opening such as an eyelet is formed at the connection end portion of the film body. It is not necessary to form a part. Therefore, it is possible to prevent the tensile stress from concentrating on the connection end portion in conjunction with the continuous application of the tension, and it is possible to remarkably improve the durability of the film body. Furthermore, since tension is continuously and substantially uniformly applied to the connecting end of the film body, the sealing property of the connecting portion is greatly improved, and rainwater or the like is prevented from entering from the outside to the inside. Can be prevented.

According to a second aspect of the present invention, the pressing mechanism is fixed to the shank projecting from the central portion of the connecting member on the side where the film body is disposed, and the shank so that the position can be adjusted.
An arm arranged straddling between the pair of pressing members,
A pair of pivot members are rotatably pivoted between both ends of the arm and the pair of pressing members, and a pivot point of the pressing member is inclined to the shank side from the pivot point of the arm. Since the rod and the rod are configured, when the pulling force acting on the film body acts on the pressing member, a component force for pressing the pressing member in the direction of the connecting member is exerted by the inclined rod, so that the connecting end portion It is possible to further increase the clamping force of the film body and to secure the connection between the membrane bodies. Also,
Since the pressing mechanism can apply a pressing force to the pressing member by simply pressing the arm and fixing it to the shank, it has various excellent effects that the work of connecting the film bodies can be greatly 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 showing a cross section of a main part of a connecting portion of a film body corresponding to line AA in FIG. 1 showing an embodiment of the present invention.

FIG. 3 is an explanatory view schematically showing a main part of 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 body 30a Membrane piece 32 Connecting member 36 Holding member 38, 40 Concavo-convex portion 42 Pressing mechanism 44 Shank 46 Arm 52 Rod

Claims (2)

[Claims] 1. A connecting member, which is disposed so as to straddle one surface of connecting end portions of film bodies to be connected to each other and which is continuous along these connecting end portions, and is located at both end portions of the connecting member. , A pair of pressing members arranged on the other side surface of the film body and continuous along the connecting member, and a concavo-convex portion is formed on at least one of the facing surfaces of the connecting member and the pressing member. While sandwiching the connection end portion of the film body between the and the pair of holding members, between the center portion of the connecting member and the pair of holding members where the connection end portions of the film body are opposed to each other, A connecting structure for a film body, comprising a pressing mechanism for pressing the pressing member and the connecting member in the proximity direction. 2. The pressing mechanism includes a shank protruding from a central portion of the connecting member on the side where the film body is disposed, and the shank is fixed to the shank so that the position of the pressing mechanism can be adjusted. The arm is pivotally mounted between the arm and both ends of the arm and the pair of holding members, and the holding member side pivot point is inclined to the shank side from the arm side pivot point. The connecting structure for a film body according to claim 1, further comprising a pair of rods.