JPH04302677A - Outlet and inlet expansion structure of air film structure - Google Patents

Abstract

PURPOSE:To facilitate the manufacture of a film by giving the performance that an expansion section joining an air film structure body and an outlet-inlet part in an air film structure is capable of following the deformation of the air film structure and housed without damaging the appearance of the outlet- inlet part. CONSTITUTION:A plurality of ropes 4 for holding a film 3a of an expansion section 3 joining an air film structure body 1 and outlet-inlet part 2 are disposed spaced from each other on the film 3a. The film is divided into small units in every rope gap to form a bellows-like film surface by the internal air pressure.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of an expansion portion of an air membrane structure, which is a connecting portion between the main body of the air membrane structure and the entrance/exit portion.

0002

[Prior Art] Expansion portion c connecting air membrane structure main body a and entrance/exit portion b in a conventional air membrane structure
As shown in FIG. 3, the shape of the membrane is nearly semicircular in vertical cross section so that it can follow the deformation of the air membrane structure.

0003

Problems to be Solved by the Invention The shape of the membrane of the expansion portion in the conventional structure is such that the membrane of the expansion portion protrudes to a greater extent than the height and width of the entrance, which impairs the aesthetic appearance of the entrance. Further, since the area of the membrane in the expansion portion becomes large, wrinkles are likely to occur on the membrane surface, and as with the air membrane structure itself, it is necessary to cut the membrane in a complicated manner.

The present invention has been proposed in view of the problems of the prior art, and aims to provide the expansion portion with the ability to follow the deformation of the air membrane structure, and at the same time improve the aesthetic appearance of the entrance/exit. An object of the present invention is to provide a doorway expansion structure having an air membrane structure, which can be accommodated without damaging the structure and which can be easily manufactured.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the inlet/outlet expansion structure of the air membrane structure according to the present invention includes the same membrane in the expansion part connecting the air membrane structure main body and the inlet/outlet part. A plurality of ropes to be held down are arranged at intervals, and the membrane is divided into small units for each rope interval.

[0006]

[Function] As described above, the membrane of the expansion part connecting the main body of the air membrane structure and the entrance/exit part is held down by ropes arranged at predetermined intervals on the same membrane, so that its cross section is the same as that of the entrance/exit part. It is formed to be approximately the same size. Further, since the membrane in the expansion portion is divided into small units according to the rope spacing, the shape of the membrane surface becomes a small-scale and simple donut-shaped collection of membrane surfaces due to the pressurization of internal air.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show an embodiment of the present invention. Reference numeral 1 indicates an air membrane structure main body, 2 an inlet/outlet portion, and 3 an expansion portion connecting these parts. Same expansion part 3
In this example, when a plurality of ropes 4 are arranged at intervals and pressurized by internal air, the membrane 3a of the expansion part 3 cut so that the membrane 3a between each rope 4 has a donut shape releases air. It is airtightly connected to the membrane structure body 1 and the inlet/outlet portion 2, so that when air is fed into the air membrane structure body 1 and pressurized, a bellows-like membrane surface is formed on the expansion portion 3. .

[0008]

Effects of the Invention As described above, in the present invention, the membrane of the expansion part connecting the main body of the air membrane structure and the entrance/exit part of the air membrane structure is held down by a plurality of ropes arranged at predetermined intervals, Because it has a bellows-like shape,
It has enough deformation performance to follow the deformation of the air membrane structure,
In addition, its cross section is approximately the same size as the entrance and exit,
It does not spoil the beauty of the entrance/exit.

Furthermore, since the membrane in the expansion portion is divided into donut-shaped small unit membranes by the plurality of ropes, the membrane can be easily cut and therefore manufactured.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of an entrance/exit expansion structure with an air membrane structure according to the present invention.

FIG. 2 is a longitudinal sectional view of the entrance/exit expansion joint structure.

FIG. 3 is a longitudinal cross-sectional view of a conventional air membrane structure.

[Explanation of symbols]

1 Air membrane structure body 2 Entrance/exit section 3 Expansion part 3a Expansion part membrane 4 Rope

Claims (1)

[Claims] Claim 1: A plurality of ropes holding down the membrane are arranged at intervals on the membrane of the expansion part connecting the air membrane structure main body and the entrance/exit part, and the membrane is divided into small units according to the rope intervals. Expansion structure for entrance and exit with air membrane structure.