JP2567915Y2 - Roof membrane support structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof membrane support structure in which a roof membrane is supported via a cable installed between outer walls.

[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. In this membrane roof structure, an upper end portion of an outer wall surrounding a large space facility is covered with a roof membrane formed of a waterproof flexible membrane. The roof membrane is inflated (expanded) by injecting air into the inside of the facility, and a dome-shaped roof having a central portion swelled in the inflated state is formed. Further, the roof membrane is supported by a cable installed between opposing outer walls in order to prevent the roof membrane from being fluttered by the influence of wind or the like.

[0003] By the way, the roof membrane is structurally advantageous by increasing its swelling height in the inflated state, and it is possible to obtain a large open feeling by increasing the indoor space. When the swelling height of the roof membrane is increased, it is necessary to set the cable supporting the roof membrane to be longer along the swelled roof membrane.
However, when the cable is set to be long in this way, when the roof film is deflated (contracted), the roof film and the cable are loosened and droop greatly to the floor surface. Therefore, if the roof membrane is damaged due to the occurrence of a disaster and the air inside is exhausted, the roof membrane may be in a deflated state and the hanging roof membrane may become an obstacle, and smooth evacuation may not be possible.

Therefore, the cable is constituted by a primary cable arranged outside and a secondary cable arranged inside, and the primary cable is formed to have a length along the bulging shape of the roof membrane in an inflated state. It has been proposed by the applicant that the secondary cable is formed shorter than the primary cable, and the roof membrane in the deflated state is set to a length that is suspended at a predetermined height from the floor surface. ing.

[0005] When the roof membrane is supported by the primary cable and the secondary cable in this way, the corresponding primary and secondary cables are connected to each other at appropriate intervals, and when the roof membrane is inflated, these primary cables are connected. , The secondary cable is lifted integrally.

[0006]

However, in such a conventional roof membrane support structure, a cable or a round bar is used as a connecting member between the primary cable and the secondary cable. For this reason, since the rigidity of the connection member is significantly increased, there is a problem that when the roof film is deflated, the connection member may be stretched and the roof film may be damaged.

In view of the above-mentioned problems, the present invention reduces the rigidity of the connecting member between the primary cable and the secondary cable during deflation of the roof membrane and smoothly folds the roof membrane. An object of the present invention is to provide a roof membrane support structure that prevents a member from damaging a roof membrane.

[0008]

In order to achieve the above object, the present invention comprises a roof membrane stretched between opposite outer walls so as to be inflatable and deflateable, and the roof membrane is installed between the outer walls. In a supporting structure of a roof membrane supported via a cable to be formed, the cable is composed of a primary cable disposed outside and a secondary cable disposed inside, and the primary cable or the secondary cable Of these, one cable is provided with fixed fixtures at appropriate intervals, and the other cable is provided with a movable fixture corresponding to the fixed fixture, and these fixed fixtures and movable fixtures are It is configured to be connected via a foldable connecting member.

In this configuration, it is desirable to use a chain covered with a flexible cover for the connecting member.

[0010]

According to the above construction, in the roof membrane support structure of the present invention, the roof membrane is supported by the primary cable and the secondary cable, and one of the primary and secondary cables is supported. And the movable attachment provided on the other cable are connected via a foldable connection member, so that when the roof membrane is inflated, the connection member is tensioned. In the state,
The primary cable and the secondary cable are connected. On the other hand, when the roof membrane is deflated, the connecting member is smoothly folded to prevent the roof membrane from being stretched, thereby preventing the roof membrane from being damaged.

When the connecting member is attached to a primary cable and a secondary cable via a fixture, one of the primary and secondary cables is fixed and the other is movable. Accordingly, when the connecting member is tensioned at the time of inflation of the roof membrane, the fittings of the primary and secondary cables are relatively moved, so that the fitting of the connecting member can be improved.

By the way, in this configuration, by using a chain covered with a flexible cover for the connecting member,
The chain allows the connecting member to be folded more smoothly, and by covering the chain with a flexible cover, it is possible to prevent the roof membrane from being caught in the chain when the chain is folded. it can.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment of a roof membrane support structure according to the present invention, FIG. 1 (A) is a schematic configuration diagram of a large space facility showing an inflated state of a roof membrane, and FIG. 1 (B) is FIG. 2A is a schematic configuration diagram of a large space facility showing a deflated state of a roof membrane, FIG. 2A is a main configuration diagram showing a tensioned state of a connection member, and FIG. 2B is a main configuration diagram showing a folded state of a connection member. FIG. 3A is an enlarged sectional view of the fixture, and FIG. 3B is an enlarged side view of the fixture.

That is, in the large space facility 10 shown in FIGS. 1 (A) and 1 (B), outer walls 12 and 12 are constructed on both sides, and are covered by a roof film 14 which is installed between upper ends of the outer walls 12 and 12. Will be Further, a roof membrane 14 is provided between the outer walls 12 and 12.
A cable 16 is stretched inside (downward in the figure), and the roof membrane 14 is supported via the cable 16.

The cable 16 is a primary cable 16a
And a secondary cable 16b disposed inside the primary cable 16a. Primary cable 16
1A is set to a length substantially along the swelling shape of the roof membrane 14 in the inflated state as shown in FIG. 1A, and the secondary cable 16b is connected to the primary cable 1
6A, and when the roof membrane 14 is deflated as shown in FIG.
8, the length is set to a predetermined height h (approximately 3 m).

The primary cable 16a and the secondary cable 16b are connected via a chain 20 as a connecting member as shown in FIGS. 2A and 2B, and these primary and secondary cables 16a and 16b are connected. A predetermined interval is maintained between the two. The chain 20 has a fixed attachment 22 provided at one upper end in the drawing to the primary cable 16a.
And is rotatably mounted via a pin 24,
The other end in the lower part of the figure is rotatably attached to a movable attachment 26 provided on the secondary cable 16b via a pin 28 similarly.

The fixed fixture 22 and the movable fixture 26 have a pair of gripping pieces 32a, 32b which can be opened and closed via a hinge 30, and a pair of gripping pieces 32a, 32b.
Engaging and disengaging member 34 for fixing the closed state of
32b, and a mounting bracket 36 protruding from one of the mounting brackets 32b.

The gripping pieces 32a and 32b are formed in half along the outer circumferences of the primary cable 16a and the secondary cable 16b. One end of each of the gripping pieces 32a and 32b (see FIG. 3A) The left ends are connected via the hinge 30. The engaging / disengaging member 34 is provided between the other ends (right ends in FIG. 3A) of the gripping pieces 32a and 32b, and is rotatable on one gripping piece 32a via a hinge 34a. Claw 34b attached to the other, and the other gripping piece 3
2b. The closed state of the gripping pieces 32a, 32b is maintained by engaging the locking claw 34b with the locking projection 34c in a state where the gripping pieces 32a, 32b are closed. .

Incidentally, in the fixed attachment 22, the inner diameter of the gripping pieces 32a, 32b is made substantially equal to the outer diameter of the primary cable 16a, and the cable 16a is strongly gripped with the gripping pieces 32a, 32b closed. Then, in the fixed state, the movement of the fixed attachment 22 is prevented.
On the other hand, in the movable attachment 26, the gripping pieces 32a, 3
The inner diameter of 2b is formed larger than the outer diameter of the secondary cable 16b, so that the movable fixture 26 can move relative to the secondary cable 16b.

In the fixed fixture 22 provided on the primary cable 16a, the mounting bracket 36 is fixed to the lower gripping piece 32b and the secondary cable 16 is fixed.
b, the movable attachment 26 is provided with
A mounting bracket 36 is fixed to 2a.

The chains 20 are provided at appropriate intervals in the direction in which the cables 16 are routed. Each chain 20 is formed to have a length L that maintains a predetermined interval between the primary cable 16a and the secondary cable 16b. . The chain 2
The outside of 0 is covered with a flexible cover 38.

With the above structure, in the roof membrane support structure of the present embodiment, the cable 16 is composed of the primary cable 16a and the secondary cable 16b, and the primary cable 16a
Is formed to have a length along the bulging shape of the roof membrane 14 in the inflated state, so that the bulging height of the roof membrane 14 can be set to a relatively high level. On the other hand, when the secondary cable 16b is formed shorter than the primary cable 16a and the roof membrane 14 is deflated, the roof membrane 14
8, the height is set to be a predetermined height h. Therefore, even if the roof membrane 14 suddenly becomes deflated in the event of a disaster or the like, there is no human being between the floor surface 18 and the roof membrane 14. It is possible to secure enough space for passing disaster prevention equipment and safety in emergency.

In this embodiment, since the primary cable 16a and the secondary cable 16b are connected via the chain 20, when the roof film 14 is inflated, the primary cable 16a is tensioned while the roof 20 is in tension. 16a and the secondary cable 16b are connected. On the other hand, when the roof membrane 14 is deflated, the primary cable 16a and the secondary cable 16b
At this time, since the chain 20 is smoothly folded, it is possible to prevent the roof membrane 14 from being stretched and to prevent the roof membrane 14 from being damaged. Can be.

The chain 20 is attached to the primary cable 16a and the secondary cable 16b via a fixed fixture 22 and a movable fixture 26, and the movable fixture 26 is connected to the secondary cable 16b. Since the movable member 26 is relatively movable with respect to the cable 16b, when the connecting member is tensioned as the roof membrane is inflated, the movable attachment 26 moves to improve the accommodation of the chain 20. can do.

Further, in this embodiment, the chain 20 covered with the flexible cover 38 is used as the connecting member, so that the chain 2
0 makes the folding at the time of deflation smoother, and the flexible cover 38 coated on the chain 20 prevents the roof membrane 14 from being caught in the chain 20 when the chain 20 is folded. Can be prevented.

In this embodiment, the case where the fixed attachment 22 is provided on the primary cable 16a and the movable attachment 26 is provided on the secondary cable 16b is disclosed. Function can be exhibited.

[0027]

As described above, in the roof membrane support structure according to the first aspect of the present invention, the cable supporting the roof membrane is composed of a primary cable and a secondary cable. Because the next cable is connected via a foldable connecting member, the connecting member is smoothly folded at the time of deflation of the roof membrane, preventing the roof membrane from being stretched, and extending the roof membrane. Can be prevented from being damaged. At this time, when attaching the connecting member to the primary cable and the secondary cable, one of the primary and secondary cables is fixed and the other is movable, so that when the roof membrane is inflated, When the connection member is tensioned, the attachments of the primary and secondary cables are relatively moved, so that the connection member can be easily accommodated.

According to the second aspect of the present invention, since a chain covered with a flexible cover is used for the connecting member,
The chain allows the connecting member to be more smoothly folded, and by covering the chain with a flexible cover, the roof membrane is prevented from being caught in the chain when the chain is folded. Various excellent effects can be obtained that the inflation and deflation of the roof membrane can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a large space facility showing an inflated state and a deflated state of a roof membrane to which the present invention is applied.

FIG. 2 is a main part configuration diagram showing a tensioned state and a folded state of the connecting member showing one embodiment of the present invention.

FIG. 3 is an enlarged sectional view and an enlarged side view of a fixture used in one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Large space facility 12 Outer wall 14 Roof membrane 16 Cable 16a Primary cable 16b Secondary cable 20 Chain (connection member) 22 Fixed fixture 26 Movable fixture 38 Flexible cover

Claims (2)

(57) [Scope of request for utility model registration] 1. A roof membrane support structure comprising a roof membrane stretched between an opposing outer wall so as to be inflatable and deflateable, and the roof membrane is supported via a cable installed between the outer walls. The cable is composed of a primary cable arranged outside and a secondary cable arranged inside, and fixed cables are provided at an appropriate interval on one of these primary cables or secondary cables. In addition, the other cable is provided with a movable attachment corresponding to the fixed attachment, and the fixed attachment and the movable attachment are connected via a foldable connection member. Roof membrane support structure. 2. The support structure for a roof membrane according to claim 1, wherein a chain covered with a flexible cover is used as the connecting member.