JPH021403Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to improvement of the membrane material joint in an air membrane structure.

The so-called air membrane structure is, as shown in the plan view of Fig. 1, a compression ring 1 provided around the building, wires 2... stretched in accordance with the scale of the building, and a membrane material 3... between the wires 2... The structure is such that the roof surface is supported by pneumatic pressure, in which a pressure greater than the weight per unit area of the roof surface is applied to the chamber. This is done by jointing two wires between the ends of the membrane material 3 in the area to be cut. The joint is connected to the wire 2 as shown in FIG.
Attach U-bolts 4 and a presser plate 5 made of an aluminum channel at predetermined intervals, insert and fix the presser plate 5 into a large aluminum channel 6 disposed at a predetermined interval, and attach the wire 2 to the membrane material joint. Construct a plate part (large aluminum channel 6), process the end of the membrane material 3 into a bag shape on this, insert the rope 7 into this, hold this large diameter end with a metal fitting 8 (bolt) ) The membrane material 3 is fixedly attached to the wire 2. moreover,
A gasket 9 is pressed into the gap between the large-diameter portions to seal between the adjacent membrane materials 3, 3, and a metal fitting 8 is used as a rain cover for bolted joints where mechanical water penetration is unavoidable.
The cover for this is the upper neoprene cover 1
This is done by masking 0. On the other hand, numeral 11 in the figure is a condensation catcher which is fixed to the large aluminum channel 6 at the same time as the membrane material 3 is fixed.

In the conventional joint configuration described above, the fastening part of the joint is constructed with a single presser metal fitting for each of the abutting membrane materials, so the number of metal fittings and bolts is large.
The joint part will inevitably be large and the load will be heavy.

This proposal was developed mainly in view of this point, and its gist is to form a step part on one side of the top surface into which the large-diameter end of the membrane material, which is processed into a bag shape and into which a rope is inserted, is fitted. A single bolt is installed in the center of the plate part for the membrane material joint, and the ends of the membrane material are stacked on the plate part and abut against each other, and the large diameter end of the lower membrane material is fitted into the stepped part. The bolt is skewered in such a manner that it fits, and a stepped portion is formed on the stacked portion, on the opposite side of the stepped portion, into which the large-diameter end of the upper membrane material fits, and a bolt is inserted on the upper surface. Cover the presser metal fitting for crimping, which has engaging claws protruding from both sides of the through hole, by tightening the nut while the large diameter part on one end fits the other end of the water stop cover that fits into the engaging claws. However, by constructing a joint cover made of synthetic rubber between the opposing large diameter parts, the structure of the membrane joint part is compact and streamlined in terms of design, reducing weight and reducing the number of man-hours for installing the membrane material. Furthermore, it is possible to prevent membrane material deterioration, improve strength, reduce costs, and ensure rain protection at bolted joints.

Hereinafter, this will be explained in detail based on an embodiment diagram of the present invention.

That is, FIG. 3 is a front view of the joint part of the present invention,
Components that are the same as those in FIG. 2 are given the same reference numerals. As is clear from the figure, in this example, the holding plate 5 is fixed in the middle of the U-bolt 4 and only holds down the wire 2 via the spacer 15, and is attached to the large aluminum channel 6' of this modification. All insertion and fixing is performed by an aluminum channel 12 fixed to the tip of the U-bolt 4. 13 is the holding plate 5 and aluminum channel 1
This is a spacer for level adjustment of the wire cross section inserted between the two. In the figure, 2 is a wire that crosses. The large aluminum channel 6' is formed by bagging the membrane material 3 on one side and forming a stepped part 21 for fitting the large diameter end of the rope 7, and a single bolt 14 is installed in the center of the channel 6'. First, one membrane material (in the illustrated example, the left side) is wrapped and assembled in such a manner that the other membrane material (the right side) is covered, and this entire wrap part is attached to the large aluminum channel 6. A presser foot 16, which is formed by bagging the membrane material 3 and forming a stepped portion 22 for fitting the large-diameter end of the rope 7, on the opposite side of the rope 7 is held down by tightening a nut 17.

However, since the membrane materials 3 and 3 that butt each other are joined by a common fastener even in the wrapped state, the deterioration of the membrane materials can be prevented by increasing the thickness of the joint, and at the same time, the By improving strength and reducing the number of tightening points, quality is improved, work efficiency is improved, and the number of pressers and bolts can be reduced compared to conventional construction methods.

In the figure, reference numeral 18 denotes a water stop cover made of synthetic rubber, and a large diameter portion 18a at one end of the cover is fitted into engaging claws 16a protruding from the right and left sides of the presser foot 16.
Between 8a is a joint cover 1 made of synthetic rubber.
9 is attached by a plug-in fit, and the plug-in fit is fitted and locked with the help of a zipper 20 attached to the large diameter portion 18a for preventing unfitting.

Since the bolts 14 are protected from rain, the water-tightness at the bolt fastening portion is ensured. Therefore, in this case, it is possible to joint the membrane materials that butt each other with a single bolt while ensuring that the bolt fastening part is protected from rain, so the joint part becomes compact and the design is improved. It is also thin and lightweight, making it easy to deal with the increase in weight of double membranes, etc., and can also be applied to membrane joints with air membrane structures from large to medium to small scales, and the width of the large aluminum channel 6' can be reduced. By making the size smaller, the length of the member can be increased, so the number of members can be reduced, and the number of man-hours required for attaching the membrane material can be reduced, which is extremely significant.

In the illustrated example, the membrane material 3 is broken at the holding part by the presser foot 16 during inflation, and the large aluminum channel 6' is broken during deflation.
Although they are bent at different positions at the side edges, this is preferable because it disperses the fatigue points.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the membrane structure, FIG. 2 is an explanatory diagram of a conventional membrane joint, and FIG. 3 is an explanatory front view of the membrane joint according to the present invention. 6'... Large aluminum channel, 14... Bolt, 15... Spacer, 16... Presser foot, 1
7...Natsuto, 21, 22...Paragraph section.

Claims (1)

[Scope of utility model registration request] A single bolt is planted in the center of the plate part for the membrane material joint, which has a stepped part on one side of the upper surface into which the large diameter end of the membrane material processed into a bag shape and into which the rope is inserted, fits. The ends of the membrane materials that are stacked on top of each other and abut against each other are skewered onto the bolt in such a manner that the larger diameter end of the lower membrane material fits into the stepped portion, and further, on this stacked portion, On the opposite side of the stepped portion, a stepped portion into which the large diameter end of the upper membrane material fits is shaped, and on the top surface, a presser metal fitting for crimping with engaging claws protruding from both sides of the bolt hole is attached at one end. The large diameter part on the side clamps the other end of the water stop cover that fits into the engaging claw and is covered with a nut, and a joint cover made of synthetic rubber is installed between the opposing large diameter parts. A structure of a membrane material joint in an air membrane structure characterized by: