JPH04368578A - Double film body for pneumatic structure - Google Patents

Abstract

PURPOSE:To obtain a new bending structure in a double film body for a pneumatic structure having an inside and an outside airtight film. CONSTITUTION:Basic clothes 8a, 8b being mutually opposite are connected with many stringers 11 at fixed intervals, and the outside surfaces of the basic clothes are coated for forming an inside airtight film 10a and an outside airtight film 10b, and pressurized gas is enclosed inside an airtight structure formed of the above airtight films 10a, 10b to form a double film body 12 for a pneumatic structure. Either side of the opposite inside and outside airtight films is bent to form a bending part 15, and a form maintaining sheet 17 is fixed across a bent part 16 on the inside of the bending part 15.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double membrane for air structures, and more particularly to a novel bent structure of a double membrane for air structures.

0002

[Prior Art] An inner airtight membrane and an outer airtight membrane of a double membrane body for air structures are arranged with their membrane surfaces facing each other, and both airtight membranes are connected with a reinforcing cloth, and the membrane surfaces are Pressurized gas is sent in to form a so-called air mat, and this air mat is used to construct a heat insulating structure. At that time, when forming each bend, in the air structure,
A rigid member such as a metal pipe that has been plastically worked or bent has been used to maintain its overall shape.

0003

[Problems to be Solved by the Invention] Conventional double membrane bodies for air structures used rigid members such as pipes to maintain a predetermined shape, making assembly and folding troublesome. They often caused damage and were heavy and inconvenient to transport.

SUMMARY OF THE INVENTION An object of the present invention is to provide a double membrane body for air structures that is easy to manufacture, easy to assemble, fold and transport, and which is free from damage to the airtight membrane.

[0005]

[Means for Solving the Problems] The present invention connects base fabrics provided facing each other at regular intervals by a large number of stringers, and coats the outer surfaces of both base fabrics with a synthetic resin material. A double membrane body for an air structure characterized by comprising an inner airtight membrane and an outer airtight membrane, and a pressurized gas is sealed inside the double membrane body, and one of the inner and outer airtight membranes facing each other. is bent to form a bent part, and a shape-retaining sheet is fixed across the bent part on the inside of the bent part, or the end surfaces of the independent double membrane bodies are arranged adjacent to each other at a certain angle. The bent portion is formed by connecting both adjacent inner airtight membranes with a first sheet and connecting both adjacent outer airtight membranes with a second sheet longer than the first sheet. This is a double membrane body for air structures.

[0006]

[Operation] In the present invention, the structure of the bent portion of the double membrane body for air structures is made of the same type of sheet as the membrane body without using a rigid member, so there is no danger and it is easy to handle and transport. It's easy.

[0007]

[Embodiment] As shown in FIG. 1, the present invention connects base fabrics 8a and 8b that are provided facing each other at a constant interval by a large number of stringers 11, and synthesizes them on the outer surfaces of both base fabrics 8a and 8b. A double membrane body 12 consisting of an inner airtight membrane 10a and an outer airtight membrane 10b formed by applying resin coatings 9a and 9b is used, and pressurized gas is sealed inside the double membrane body 12. . When forming the bent portion 15 in such an air structure, as shown in FIG. 2, a bent portion 16 is formed inside the inner airtight membrane 10a, and in the bent state, the bent portion is formed on the inner surface of the inner airtight membrane 10a. The shape-retaining sheet 17 is adhered and fixed in a state where it straddles the shape-retaining sheet 16, and the bent portion at a predetermined angle is maintained.

FIG. 5 shows a case in which the technique of the present invention is applied to a tent, and the bending structure of the present invention is employed at the bent portion 15 of the tent roof.

[0009] Reference numeral 13 in the figure is a tent main body, and a lower edge portion 20 is formed on both sides of the tent body, and foot portions 21 are provided at multiple locations on this lower edge portion 20. A tent body 13 is fixed to the ground. In addition, the lower edge 20
A supply/exhaust port 30 is provided on the side surface, and this supply/exhaust port 30 is connected to a supply/exhaust device 32 via a pipe 33. Further, a guide rope attachment portion 35 is provided on the side surface of the tent body 13.
One end of a guide rope 36 is fixed to the tent body 13, and the other end of the guide rope 36 is fixed to the ground so as to pull the side surface of the tent body 13.

[0010] In a tent provided with such a bending part 15, the tent main body 13 which has been folded and stored is opened and the lower edges 20 are temporarily fixed at preset fixed positions parallel to each other, and then transported. By connecting the exhaust port 30 to a supply/exhaust device 32 via a pipe and driving the supply/exhaust device 32 to supply air, pressurized air is sent between the inner airtight membrane 10a and the outer airtight membrane 10b. By doing so, the tent body 13 rises up and the adjacent airtight structures at the bent portions 15 are formed while maintaining a predetermined angle. During this molding process, the lower edge 20 of the tent body 13 is fixed to the ground by the foot part 21, and the side surface 13S of the tent body 13 is fixed to the ground by the guide rope 36 so as to stand upright.

FIG. 3 shows another embodiment of the present invention, in which both inner airtight membranes 10a of adjacent airtight structures are connected to each other by a first sheet 40, and both outer airtight membranes 10a of adjacent airtight structures are connected to each other by a first sheet 40.
b are connected to each other by a second sheet 41 which is longer than the first sheet 40. In addition, ventilation holes 42 are provided in the opposing end faces of the adjacent airtight structures, respectively, so that the adjacent airtight structures are formed so as to be able to ventilate each other. Therefore, air is vented to the adjacent airtight structures through the ventilation holes 42, and the adjacent airtight structures are bent at a predetermined angle toward the short first sheet 40 to maintain their shape.

FIG. 4 shows still another embodiment of the present invention, in which in place of the ventilation holes in FIG. 3, opposite end surfaces of adjacent airtight structures are provided in order to maintain air permeability and obtain a reinforcing effect. It is formed of mesh 45.

[0013]

As explained above, in the present invention, the inner airtight membrane and the outer airtight membrane of the double membrane body for air structures are made of a base fabric that faces and is connected to each other at a constant interval by a large number of stringers. Since the outer surface is coated with a synthetic resin material, a substantially smooth flat wall is formed in which pressurized gas is sealed without leakage and there is no local bulge. Therefore, it is easy to attach an entrance and exit to the tent and provide a door. In addition, the complicated assembly work of attaching pipes to bent parts as in the past is no longer necessary, making it possible to assemble the tent in a short time, reducing the number of separate parts, and preventing parts from being lost during transportation. This makes it possible to reduce manufacturing costs.

[Brief explanation of drawings]

FIG. 1 is a partially enlarged sectional view of a double membrane body according to the present invention.

FIG. 2 is a partial perspective view of an example of a bent portion according to the present invention.

FIG. 3 is a partial perspective view of another example of the bending portion according to the present invention.

FIG. 4 is a partial perspective view of another example of the bending portion according to the present invention.

FIG. 5 is a perspective view of an embodiment of a tent to which the present invention is applied.

[Explanation of symbols]

8a Base fabric 8b Base fabric 9a Coating 9b Coating 10a Inner airtight membrane 10b Outer airtight membrane 11 Stringer 12 Double membrane body 15　Bending part 16 Flexible part 17 Shape-retaining sheet 40 First sheet 41 Second sheet 42 Ventilation hole 45 Mesh

Claims (5)

[Claims] Claim 1: Base fabrics provided facing each other are connected at regular intervals by a number of stringers, and the outer surfaces of both base fabrics are coated with a synthetic resin material to form an inner airtight membrane and an outer airtight membrane. A double membrane body for air structures characterized by comprising: 2. A double membrane body for air structures, comprising pressurized gas sealed between an inner airtight membrane and an outer airtight membrane, which face each other and are connected at a constant interval by a large number of stringers. A double membrane body for an air structure, characterized in that one of the inner and outer airtight membrane sides is bent to form a bent part, and a shape-retaining sheet is fixed across the bent part on the inside of the bent part. 3. A double membrane body for air structures in which pressurized gas is sealed between an inner airtight membrane and an outer airtight membrane that face each other and are connected at a constant interval by a large number of stringers. The end surfaces of the double membrane body for air structures are arranged adjacent to each other at a certain angle, both adjacent inner airtight membranes are connected by a first sheet, and both adjacent outer airtight membranes are connected to each other by a first sheet. A double membrane body for an air structure, characterized in that the double membrane body is connected by a long second sheet to form a bent part. 4. The double membrane body for air structures according to claim 3, further comprising communication means between the end faces of both adjacent double membrane bodies. 5. The membrane for air structures according to claim 3, wherein end faces of both adjacent double membranes are communicated through a mesh.