JPH0321400Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to the improvement of membrane material joints in air membrane structures and the like.

``Prior art'' As shown in the plan view of Fig. 2, the so-called air membrane structure consists of a compression ring 1 provided around the building, a wire 2... stretched across it according to the scale of the building, and the wire 2... In this structure, a membrane material 3 is stretched between them to form a roof surface, a pressure greater than the weight per unit area of the roof surface is applied to the chamber, and the roof surface is supported by air pressure. The tensioning of the membrane material 3 is usually carried out by jointing two wires between the ends of the cut membrane material 3 in an area surrounded by the wires 2.

This also applies to tension structures.

That is, as shown in FIG. 3, a U-bolt 4, a holding plate 5, and an aluminum channel 12 fixed to the tip of the U-bolt 4 are attached to the wire 2 at predetermined intervals.
, the aluminum channel 12 is fitted and fixed into the aluminum channel 6 provided with a predetermined gap, a plate part (aluminum channel 6) for the membrane material joint is formed on the wire 2, and the membrane is attached on top of this. The end of the material 3 is processed into a bag shape, into which the rope 7 is inserted, and the large diameter end is connected to the upright portions 20 on both sides.
20 is held down with a shaped presser metal fitting 8 (with bolts) to fix the membrane material 3 to the wire 2.

In this joint part, it is important to obtain airtightness and watertightness, so the fixing part of the membrane material 3 is made of synthetic rubber cushion to prevent the membrane material 3 from being damaged by repeated movements such as wind pressure. It is better to fasten it through.

In the figure, reference numeral 11 is a condensation catcher made of synthetic rubber or the like and mounted on the aluminum channel 6, and the connection between adjacent units is through a connecting pipe 13 at the loop corner.
It is done by handing over.

Reference numeral 10 designates a neoprene cover for covering the hardware 8, which has a thick wall portion 14 formed on one end thereof, and presses a fitting groove 15 attached to the thick wall portion 14 to engage the shape of the hardware 8. It is fitted onto the stop projection 16 to cover the presser foot 8.

The seal for the gap between the thick parts 14 is as follows:
The gasket 17 is inserted into the insertion groove 18 attached to the thick walled portion 14 at a joint on site and is welded.

"Problems to be Solved by the Invention" However, in the above-mentioned structure for fixing the large diameter end of the membrane material 3, the large diameter end is dragged under the presser foot 8 and sinks in, as shown in FIG. This causes the presser foot 8 to generate a force in the lifting direction as shown by arrow A, but in order to withstand this force and prevent it from sinking in, the rigidity of the presser foot 8 must be increased.
This leads to an increase in weight, which is undesirable for this joint part, which wants to reduce the weight as much as possible.

``Means for solving problems'' and ``effects'' This proposal was made in view of the circumstances described above, and its gist is that the plate part for the membrane joint with a vertical wall shaped in the center. Arranging a mold presser on both sides of the vertical wall of the constituent aluminum channel, and arranging the upright part on the vertical wall side of the standing parts at both ends of the mold presser in a position retracted from the side edge,
In the recessed step formed between the upright part and the upright wall,
The end of the membrane material is processed into a bag shape and a rope is inserted into the large diameter end, which is then crimped between the aluminum channel and the presser fitting, and a tenon is applied to the membrane material. As a result, the large end of the membrane material presses down on the presser foot, eliminating the conventional phenomenon of the large end of the membrane material digging in and lifting the presser foot, and achieving a much higher holding effect on the joint part with the same cross-sectional area. The point is that it will play.

"Example" This will be explained in detail below based on the drawings.

FIG. 1 shows a joint portion of the membrane material of the present invention, and the same components as those in FIG. 3 are given the same reference numerals.

In this case, a standing wall 6a of a predetermined height is formed in the center of the aluminum channel 6, and this pushes out the large diameter end of the membrane material 3 attached along this rising edge to the inside of the membrane, that is, the backrest. It serves a purpose. There is no particular limit to its height.

On the other hand, the upright part 20' on the large diameter end of the membrane material of the presser foot 8', which has upright parts 20' and 20'' on both sides, is moved slightly toward the inside of the membrane to form a recessed step. 19 to secure a housing portion for the large diameter end.

Since the configuration is as described above, the force acting on the presser foot 8 at the large diameter end of the membrane material shown in FIG. , the presser foot 8 is pressed down from above, and there is no inconvenience such as the presser foot 8 lifting up, which is convenient.

``Effects of the invention'' As described above, according to the present invention, the force that previously caused problems is effectively used for the presser foot, so compared to the conventional joint structure, even if the design has the same cross-sectional area, It has a much higher holding effect and is extremely convenient.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the joint part of the membrane material of the present invention, Figure 2
The figure is an explanatory diagram of the membrane structure, Fig. 3 is an explanatory diagram of the conventional membrane material joint part, and Figures 4 and 5 are explanatory diagrams of the flow of mechanical force in the conventional membrane material end presser part of the present invention. be. Explanation of symbols, 1... Compression ring, 2
... wire, 3 ... membrane material, 4 ... U bolt, 5 ... holding plate, 6 ... aluminum channel, 6a ... standing wall, 7
... rope, 8 ... presser foot, 10 ... neoprene cover, 11 ... condensation catcher, 12 ... aluminum channel, 1
3...Communication pipe, 14...Thick wall part, 15...Fitting groove, 16
...Latching protrusion, 17...Gasket, 18...Insertion groove, 8'...Presser foot, 19...Concave step, 20,
20′20″…Standing part.

Claims (1)

[Scope of utility model registration request] A mold presser is arranged on both sides of the vertical wall of the aluminum channel that constitutes the plate part for the membrane joint with a vertical wall shaped in the center, and the vertical wall is placed between the standing parts at both ends of the mold presser. The side upright part is set back from the side end, and the end of the membrane material is processed into a bag shape and a rope is inserted into the recessed step formed between the upright part and the upright wall. A membrane material joint portion, characterized in that the membrane material is crimped between the aluminum channel and a presser fitting in a manner in which the end portion is received.