JPH08449Y2 - Membrane fastening structure of membrane structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a membrane fastening structure for a membrane structure.

[0002]

2. Description of the Related Art Conventionally, a membrane structure has been proposed which is constructed by fixing a membrane to a membrane supporting portion such as a steel frame. FIG. 6 is a sectional view schematically showing a conventional membrane fastening structure in a membrane structure.

The membrane fastening structure shown in FIG.
Membrane retainers 12, 14 and a cover portion 16 are provided. Membrane presser 12
And a membrane retainer 14 are provided in parallel with the membrane supporting portion 10, and one membrane 18 arranged on one side of the membrane supporting portion 10 is locked between the membrane supporting portion 10 and the membrane retainer 12, The other membrane 20 arranged on the other side of the support portion 10 is locked between the membrane support portion 10 and the membrane retainer 14.

In locking the membrane 18, the end portion of the membrane 18 is folded back to form a bag-shaped portion 18a, and the rope 22 is inserted into the bag-shaped portion 18a. Make up a roped edge. Then, while engaging the roped edge of the membrane 18 with the membrane retainer 12, the membrane retainer 1
2 with the membrane 18 sandwiched between the membrane support 10 and
The membrane retainer 12 is attached to the membrane supporting portion 10 with the bolt 24 and the nut 26.
To conclude. Thereby, the membrane 18 is locked between the membrane retainer 12 and the membrane supporting portion 10.

In locking the membrane 20, as in the case of the membrane 18, the ends of the membrane 20 are folded back to form a bag-shaped portion 20a, and the rope 22 is inserted into the bag-shaped portion 20a. The bag-shaped portion 20a and the rope 22 form a roped edge. Then, while engaging the roped edge of the membrane 20 with the membrane retainer 14, the membrane 2 is interposed between the membrane retainer 14 and the membrane supporting portion 10.
The membrane retainer 14 is fastened to the membrane supporting portion 10 with the bolt 24 and the nut 26 in a state where 0 is sandwiched. Incidentally, the locked membrane 1
A cushioning material 2 is provided between the membrane supporting portions 8 and 20 and the membrane supporting portion 10.
8 are provided.

The cover portion 16 is a mounting portion 16a and a gasket 1
6b and cover films 16c and 16d. Mounting part 16a
Is fixed to the membrane support portion 10 between the membrane retainers 12 and 14, and the gasket 16b is fitted into the attachment portion 16a and fixed. Then, one end side of the covering film 16c is sandwiched between the film 18 and the film retainer 12 and locked, and the other end side of the covering film 16c is fitted into the gasket 16b and locked. Further, one end side of the covering film 16d is sandwiched between the film 20 and the film retainer 14 and locked, and the other end side of the covering film 16d is fitted into the gasket 16b and locked. By covering the membrane retainers 12 and 14 with the cover portion 16 in this manner, it is possible to prevent rain and wind from entering the inside of the membrane structure from the membrane retainers 12 and 14.

[0007]

However, in the above-mentioned conventional membrane fastening structure, since the number of constituent parts of the cover portion 16 is large, the cost is high and the mounting work is troublesome.

An object of the present invention is to provide a membrane fastening structure in which the structure of the cover portion is further simplified in order to solve the above-mentioned conventional problems.

[0009]

In order to achieve this object, the membrane fastening structure of the membrane structure of the first invention comprises a membrane supporting portion,
First and second membrane retainers provided in parallel with the membrane support,
These membrane presser cover parts are provided, and one of the membranes arranged on one side of the membrane support part is locked between the membrane support part and the first membrane presser and arranged on the other side of the membrane support part. In the membrane fastening structure of the membrane structure, in which the other membrane is locked between the membrane supporting portion and the second membrane retainer, the cover portion extends to one side of the membrane supporting portion and Of the first membrane that is locked between the membrane retainer and one of the membranes, and the second membrane retainer that is extended between the second membrane retainer and the other membrane of the membrane support part. And a cover film having one end connected to the first extension film and the other end connected to the second extension film, and one end of the film is folded back,
A roped edge is formed at the starting point of the turn-back of the one film, the one film is locked while the roped edge is engaged with the first film retainer, and the end of the turn-up of the one film is performed. , The first extended film is formed by extending to one side and connected to the covering film by heat welding, and the end portion of the other film is folded back, and a roped edge is formed at the starting point of the folding back of the other film. The other membrane is locked while the roped edge is engaged with the second membrane retainer, and the folded end of the other membrane is extended to the other side to form the second membrane. It is characterized in that it is formed as an extended film and is connected to the covering film by heat welding.

Further, the membrane fastening structure of the membrane structure of the second invention comprises a membrane supporting portion, a membrane retainer provided on the membrane supporting portion, and a covering portion of the membrane retainer, and the membrane end of the membrane is supported by the membrane supporting portion. In the membrane fastening structure of the membrane structure, which is formed by engaging between the membrane retainer and the membrane and extending the membrane from the membrane supporting portion, the covering portion has one portion on the side where the membrane is retained. Provided between the other part of the cover plate and the extending part of the film, and the cover plate fixed to the other part and extending the other part to the side where the film is extended to face the extending part of the film. And a cover plate made of a metal plate.

[0011]

According to the first and second inventions having such a structure,
The number of constituent parts of the cover is smaller than in the conventional case.

[0012]

Embodiments of the invention will be described below with reference to the drawings. It should be noted that the drawings are merely schematic representations so that the invention can be understood, and therefore the invention is not limited to the illustrated examples.

FIG. 1 and FIG. 2 are a sectional view and a plan view schematically showing the structure of the main part of the embodiment of the first invention. In FIG. 2, in order to facilitate understanding of the drawing, a part of the configuration is cut out and the covering film 36c and the cushioning material 48 (see FIG. 1) are shown.
Are omitted.

As shown in these figures, the membrane fastening structure of this embodiment has a membrane supporting portion 30 and first and second membrane retainers 3.
2 and 34 and a cover 36.

The first and second membrane retainers 32 and 34 are provided in parallel with the membrane supporting portion 30, and one membrane 38 disposed on one side of the membrane supporting portion 30 is provided with the membrane supporting portion 30 and the first membrane 38. The membrane 40 is locked between the membrane retainers 32, and the other membrane 40 arranged on the other side of the membrane support 30 is retained between the membrane support 30 and the second membrane retainer 34. The cover portion 36 has first and second extension films 36a and 36b and a cover film 36c. The first extension film 36a is extended to one side of the membrane support portion 30 and locked between the first membrane retainer 32 and the one membrane 38, and the second extension film 36b is formed as the membrane. The second membrane retainer 34 and the other membrane 40 are extended to the other side of the support portion 30.
Lock in between. Then, one end of the covering film 36c is connected to the first extending film 36a, and the other end of the covering film 36c is connected to the second extending film 36b.

One end of the membrane 38 is folded back, and a roped edge composed of the bag-like portion 38a and the rope 42 is formed at the starting point of the folding back of the one membrane 38, and the roped edge is used as the first membrane retainer 32. One membrane 38 while engaging with
And the folded end portion of the one film 38 is extended to one side to form a first extended film 36a, which is connected to the cover film 36c by heat welding. Further, the end of the other film 40 is folded back, and a roped edge composed of the bag-like portion 40a and the rope 42 is formed at the starting point of the folding of the other film 40, and the roped edge is engaged with the second film retainer 34. The other film 40 is locked while being joined together, and the folded back end of the other film 40 is extended to the other side to form the second extended film 36b, and the cover film 36c is formed by heat welding. Connect to. In this manner, the one film 38 and the first extension film 36a are integrally formed in advance, and the other film 40 and the second extension film 36b are integrally formed in advance. The assembly work can be simplified.

In this embodiment, one of the membranes 38 is a glass fiber cloth whose surface is coated with Teflon (trade name of DuPont), and one end of the membrane 38 is provided with one end of the membrane 38. Fold it back to extend to. Of the folded-back portion, the portion extended to one side of the membrane supporting portion 30 is used as the first extending membrane 36a, and the corner portion of the folded-back starting point is used as the bag-shaped portion 38a for forming the roped edge. . Then, the portion Q1 excluding the portions to be the first extending film 36a and the bag-shaped portion 38a and the film 38 portion facing the portion Q1 are joined by any suitable joining means such as heat welding. By thus forming the first extension film 36a by utilizing a part of the one film 38, the first extension film 36a integrated with the one film 38 and the bag-shaped portion 38a are formed. It can be formed easily. Similarly, the other film 4
Reference numeral 0 denotes a glass fiber cloth whose surface is coated with Teflon (trade name of DuPont), and the end portion of the membrane 40 is folded back so as to extend to the other side of the membrane supporting portion 30. Of the folded back portion, the portion extended to the other side of the membrane supporting portion 30 is used as the second extended membrane 36b, and the corner portion of the folded back starting point is used as the bag-like portion 40a for forming the roped edge. . And these second extension films 36
The portion Q2 excluding the portion to be the b and the bag-shaped portion 40a and the portion of the film 40 facing the portion Q2 are joined by any suitable joining means such as heat welding. One and the other membrane 3
The ropes 42 are inserted into the bag-shaped portions 38a and 40a of 8 and 40, respectively, and roped edges are formed in these films 38 and 40, respectively.

Further, in this embodiment, the membrane support portion 30 is a steel material having an I-shaped cross section, and the first and second membrane retainers 32 and 34 are metal plates having a rectangular planar shape.

A plurality of first membrane retainers 32 are attached to the membrane supporting portion 30.
The first membrane retainers 32 are arranged at predetermined intervals along the extending direction P of each of the first membrane retainers 32 and are provided on the upper surface of the membrane supporting portion 30 so as to be close to one side. Further, a plurality of second membrane retainers 34 are arranged at predetermined intervals along the extending direction P, and the respective second membrane retainers 34 are provided on the upper surface of the membrane supporting portion 30 so as to be closer to the other side.

To lock one of the membranes 38, the roped edge of the one membrane 38 is engaged with the first membrane retainer 32 while being interposed between the first membrane retainer 32 and the membrane supporting portion 30. The first membrane retainer 32 and the membrane supporting portion 30 are fastened with the bolt 44 and the nut 46 with the one membrane 38 being sandwiched. Thereby, the one membrane 38 is locked between the first membrane retainer 32 and the membrane supporting portion 30. One membrane 38 and the first extension membrane 3
If 6a is not integrally formed in advance, it is necessary to sequentially penetrate the bolt 44 into the first extension film 36a and one film 38, which is a troublesome work twice. However, these films 38 and 36a are previously integrated. If done, it will be easy to work without twice. Similar to the case of the one membrane 38, in locking the other membrane 40, the second membrane retainer 34 and the second membrane retainer 34 are engaged while the roped edge of the other membrane 40 is engaged with the second membrane retainer 34. The second membrane retainer 34 and the membrane support portion 30 are fastened with the bolt 44 and the nut 46 with the other membrane 40 sandwiched between the membrane support portions 30. Incidentally, the one membrane 38 and the first membrane retainer 3
2 and the membrane support portion 30, and further between the other membrane 40 and the second membrane retainer 34 and the membrane support portion 30, a cushioning material 48 such as a rubber sheet is provided. The cushioning material 48 is the membrane 3
This is to prevent damage to the parts 8 and 40.

Further, the covering film 36c is a glass fiber cloth whose surface is coated with Teflon (trade name of DuPont). After locking one and the other of the membranes 38 and 40, one and the other side of the covering membrane 36c is attached to the first and the second extending membranes 36a and 36b using any suitable coupling means such as heat welding. And the assembling of the cover portion 36 is completed.

The covering film 36c is formed in the extending direction P of the film supporting portion 30.
The first and second membrane retainers 32 and 34 provided on the membrane supporting portion 30 are covered with a cover membrane 36c. The covering portion 36 seals the portion of the membrane supporting portion 30 where the first and second membrane retainers 32 and 34 are provided in a watertight or airtight manner.

[0023]

Next, an embodiment of the second invention will be described. FIG. 3 is a sectional view schematically showing the structure of the main part of the embodiment of the second invention. The components corresponding to those of the embodiment of the first invention described above are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 3, the membrane fastening structure of this embodiment is one in which the membrane retainers 32 and 34 are provided side by side on the membrane supporting portion 30, and the membrane supporting portion 30 and The membrane retainers 32 and 34 and the covering portions 50 of the membrane retainers 32 and 34 are provided.

The membrane end of the membrane 52 is attached to the membrane supporting portion 30 and the membrane retainer 3
The membrane 52 extends from the membrane support portion 30 by being locked between the two. Similarly, the membrane end of the other membrane 54 is locked between the membrane supporting portion 30 and the membrane retainer 34 to extend the other membrane 54 from the membrane supporting portion 30. Further, the cover portion 50 is a cover plate 50a,
50b and seals 50c and 50d. The cover plate 50a is a metal plate, and the cover plate 50a
The part A on one side is provided with the film support portion 30 on the side where the film 52 is locked.
And the other portion B is extended to the side where the membrane 52 is extended to face the extended portion of the membrane 52. Then, a seal 50c is provided between the other portion B of the cover plate 50a and the extending portion of the film 52. Similarly, cover plate 5
0b is a metal plate, and one portion A of the cover plate 50b is fixed to the membrane supporting portion 30 at the side where the membrane 54 is locked, and the other portion C is extended to the side where the membrane 54 is extended. It faces the extended portion of the membrane 54. A seal 50d is provided between the other portion C of the cover plate 50b and the extended portion of the film 54.

In this embodiment, the membranes 52 and 54 are glass fiber cloths having a surface coated with Teflon (trade name of DuPont). The end of the membrane 52 is folded back, and this membrane 5
Of the two folded-back portions, the corner portion of the folded-back starting point is used as the bag-shaped portion 52a for forming the roped edge. Then, of the folded-back portion, the portion excluding the portion to be the bag-shaped portion 52a and the membrane 52 portion facing this portion are joined by any suitable joining means such as heat welding.
Similarly, the bag-shaped portion 54a is formed on the other film 54. The ropes 42 are inserted into the bag-shaped portions 52a and 54a, respectively, to form roped edges on the membranes 52 and 54.
Then, the rope 52, the bolt 44 and the nut 46 are used to lock the membrane 52 between the membrane support portion 30 and the membrane retainer 32 and the membrane 54 between the membrane support portion 30 and the membrane retainer 34. A cushioning material 48 is provided between the membrane 52 and the membrane retainer 32 and the membrane support portion 30, and between the other membrane 54 and the membrane retainer 34 and the membrane support portion 30, respectively.

FIG. 4 is a perspective view schematically showing the structure of the cover plate in this embodiment. In this embodiment, as shown in FIGS. 1 and 4, the cover plates 50a and 5a are
0b are integrally connected at the common portion A to form the cover plate L (see FIG. 4). The cover plate L is formed by bending a single metal plate.

The portion A of the cover plate L is connected to the membranes 52 and 5
4 is fixed to the exposed portion of the membrane supporting portion 30 between the membrane edges. Welding, screws, adhesives or any other suitable means may be used for this fixing. The extending portion B of the fixed cover plate 50a is extended to the side where the membrane 52 extends, and the portions A to B of the cover plate 50a cover the membrane retainer 32 like eaves. Similarly, the extending portion C of the fixed cover plate 50b is extended to the side opposite to the cover plate 50a, and the portions A to C of the cover plate 50b cover the membrane retainer 34 like eaves.

The extended portion B of the cover plate 50a
A seal 50c between the membrane and the membrane 52, and a seal 50d between the extended portion C of the cover plate 50b and the membrane 54.
To provide. A sealant (liquid seal material) or any other suitable seal is used as the seals 50c and 50d. The covering portion 50 seals the portion of the membrane supporting portion 30 where the membrane retainers 32 and 34 are provided in a watertight or airtight manner. still,
If there is a concern about leakage of rain from the portion A of the fixed cover plate L, it is preferable to provide a seal also on this fixed portion. Further, the cover plates 50a and 50b may not be integrally formed.

FIG. 5 is a cross-sectional view of an essential part schematically showing the construction of another embodiment of the second invention. The components corresponding to those of the embodiment of the second invention described above are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 5, the membrane fastening structure of this embodiment is one in which one membrane retainer 32 is provided on the membrane supporting portion 30 and the other membrane retainer 34 is not provided. The support portion 30, the membrane retainer 32, and the cover portion 56 of the membrane retainer 32 are provided.

The membrane end of the membrane 52 is attached to the membrane supporting portion 30 and the membrane retainer 3
The membrane 52 extends from the membrane support portion 30 by being locked between the two. The other membrane 54 does not engage with the membrane support 30. The cover portion 56 includes the cover plate 50a and the seal material 50c, and does not include the cover plate 50b and the seal 50d. The cover plate 50a is a metal plate, and one portion A of the cover plate 50a is fixed to the membrane supporting portion 30 on the side where the membrane 52 is locked and the other portion B is extended to the side where the membrane 52 is extended. To face the extended portion of the membrane 52. And the other part B of the cover plate 50a and the film 52
A seal 50c is provided between the seal 50c and the extended portion of the.

The invention is not limited to the above-mentioned embodiment, and therefore, the shape of each component, the arrangement position, the arrangement number, the forming material and the like can be arbitrarily changed.

[0035]

As is apparent from the above description, according to the first and second inventions, the number of constituent parts of the cover portion is smaller than that of the conventional one, so that the sealing work of the membrane fastening portion of the membrane structure portion can be performed. The cost required for sealing can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part schematically showing the configuration of an embodiment of the first invention.

FIG. 2 is a main part plan view schematically showing the configuration of an embodiment of the first invention.

FIG. 3 is a cross-sectional view of a main part schematically showing the configuration of an embodiment of the second invention.

FIG. 4 is a perspective view schematically showing a configuration example of a cover plate.

FIG. 5 is a cross-sectional view of essential parts schematically showing the configuration of another embodiment of the second invention.

FIG. 6 is a cross-sectional view of a main part schematically showing the configuration of a conventional membrane fastening structure.

[Explanation of symbols]

 30: Membrane supporting part 32, 34: Membrane retainer 36, 50: Covering part 36a, 36b: Extending film 36c: Covering film 38, 40, 52, 54: Membrane 50a, 50b: Covering plate 50c, 50d: Seal

Claims (2)

[Scope of utility model registration request] 1. A membrane supporting portion, first and second membrane retainers provided in parallel with the membrane supporting portion, and a cover portion for these membrane retainers, one arranged on one side of the membrane supporting portion. Of the membrane is locked between the membrane support and the first membrane retainer, and the other membrane disposed on the other side of the membrane support is retained between the membrane support and the second membrane retainer. In the membrane fastening structure of the membrane structure, the cover portion extends to one side of the membrane supporting portion, and the first membrane retainer and the first extending membrane locked between the one membrane, A second extension film extended to the other side of the membrane support part and locked between the second membrane retainer and the other membrane, and one end is connected to the first extension film and the other end is connected to the first extension film. And a covering film connected to the two extending films, the end portion of the one film is folded back, and a roped edge is formed at the starting point of the folding back of the one film, and the roped edge is the first film. In the presser foot While the two films are locked together, the folded end of the one film is extended to one side to form a first extended film, which is connected to the covering film by heat welding. , The end of the other film is folded back, a roped edge is formed at the starting point of the folding of the other film, and the other film is locked while the roped edge is engaged with the second film retainer. A film structure, characterized in that the end portion of the folded back portion of the other film is extended to the other side to form a second extended film and is connected to the covering film by thermal welding. Membrane fastening structure. 2. A membrane supporting section, a membrane retainer provided on the membrane supporting section, and a covering section for the membrane retaining section, wherein the membrane edge of the membrane is locked between the membrane supporting section and the membrane retaining section. In the membrane fastening structure of the membrane structure formed by extending from the support portion, the cover portion fixes one portion to the membrane support portion on the side where the membrane is locked and the other portion extends the membrane. A cover plate extending toward the open side and facing the extended portion of the membrane, and a seal provided between the other portion of the cover plate and the extended portion of the membrane, the cover plate being a metal plate. A membrane fastening structure for a membrane structure comprising: