JPS62353Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to fasteners used to secure corrugated sheets to the base material of roofs and walls.The purpose of this invention is to eliminate the hassle of drilling holes in the corrugated sheets. It can be fixed simply by drilling a hole and inserting a screw, without crushing the peaks of the corrugated plate more than necessary.
To provide a fastener for fixing a corrugated plate that can maintain a predetermined floating state.

Conventionally, this type of fastener was used, for example, in
As is well known from Japanese Patent No. 25052, etc., it is a hook-shaped shaft with a bent lower end, a head is provided on this, and a washer and a cushion seat are fitted. When using this fastener, drill a hole in the corrugated sheet in advance, place it at the peak of the corrugated sheet, and then insert it into the hole through the hook and attach it to the base material formed at an angle, such as on a roof. It is secured by hooking the hook part and applying pressure to the mountain part, using the repulsive force. However, during the fixing work, it takes time and effort to drill holes in the corrugated sheet, and due to differences in the hanging length of the base material or the length of the shaft, the fastening force may become weaker or stronger, causing damage to the peaks of the corrugated sheet. There were drawbacks such as the fact that it sometimes applied too much pressure.

This idea was devised to solve the above-mentioned drawbacks, and by screwing, holes are made in the corrugated sheet and the base material, and they are screwed together, and the distance between the surface of the base material and the ridges of the corrugated sheet is kept constant. It is designed so that it can be retained.

Therefore, an embodiment of the fastener according to this invention will be explained with reference to the drawings. As shown in FIG.
protrudingly longer than the height of the ridges of the corrugated sheet 11, a trunk 3 that is thinner than the diameter of the neck is provided from the lower end of the neck 2, and a tapered leg 4 extends from the trunk 3 in a tapered shape. A first blade 5 is formed on the outer periphery of the leg portion 4, and a screw 6 is formed on the body portion 3, and a first blade 5 is formed on the outer periphery of the lower end of the neck portion 2. form the second blade 7 to obtain, and the head 1
A driver receiving hole 8 is bored in the top surface of the screwdriver. Furthermore, the neck portion 2 is provided with a washer plate 9 having a crescent-shaped cross section.
A disc-shaped cushion seat 10 is rotatably fitted therein.

The shape of the head 1 is not limited to a hemispherical shape, but may be formed into a hexagonal shape or other shapes. Further, in FIGS. 2 and 3, reference numeral 11 indicates a corrugated plate, and reference numeral 12 indicates a base material made of extruded aluminum rafters.

This invention has the above-mentioned structure, and when pasting the corrugated sheet 11 on the base material 12, the leg part 4 of the fastener according to the present invention is attached to the part of the peak of the corrugated sheet 11 that faces the base material 12. When the corrugated plate 11 is pierced and the fastener is rotated, the first blade 5 of the leg 4 makes holes in the corrugated plate 11 larger in turn, and the body 3 with the screw 6 inserted therethrough. There, the leg portion 4 reaches the surface of the base material 12 and punches a hole in the base material 12 again with the first blade 5, and at this time, the lower end surface of the neck portion 2, which is thicker than the body portion 3, reaches the surface of the corrugated sheet 11. However, since this neck 2 is provided with a second blade 7, the second blade 7 is used to make the hole in the corrugated plate 11 even larger, and the neck 2 also enters therein. If the fastener continues to be rotated in this way, the screw 6 of the body 3 will be screwed into the base material 12, and since the lower end of the neck 2 protrudes outward from the body 3, its lower end surface will be attached to the base material 12. The corrugated sheet 11 is fixed to the base material 12 in a state in which the cushion seat 10 is also pressed against the surface of the corrugated sheet 11. Therefore, the neck portion 2 functions as a kind of support supporting the peak portion of the corrugated sheet 11.

As described above, the fastener for fixing corrugated sheets according to this invention has a neck section that is smaller than the head section, a body section that is thinner than the neck section, and leg sections that are more tapered than the body section, and the neck section is slightly longer than the height of the peaks of the corrugated sheet. A first blade is formed in the leg part, a screw is formed in the body part, and a second blade is formed in the neck part,
Since the holes can be made using the first blade of the leg, it is possible to save the trouble of drilling holes one by one when fixing the corrugated sheets, which can improve work efficiency.
Since a screw is carved into the body, it is screwed into the base material and fixed, and since the neck is thicker than the body in a stepped manner and is provided with a second blade, it can be secured by the second blade. In addition to cutting the corrugated sheet into the corrugated sheet, the ridges of the corrugated sheet are held at a predetermined height above the base material, so there is no risk of undue pressure on the ridges, and a constant state is maintained for each fastening section. It can be fixed with the pressure of

Also, since the corrugated plate is first drilled with the first blade of the tapered leg, and then the hole is drilled with the second blade of the large-diameter neck, it is different from those that drill the hole with a larger diameter from the beginning.
Since the holes are sequentially drilled with larger diameters, the holes can be drilled accurately and reliably at predetermined positions in the corrugated plate.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the corrugated plate mounting fastener according to this invention, Fig. 2 is a front view showing the corrugated plate in a fixed state, and Fig. 3 is the arrow shown on the line A-A in Fig. 2. FIG. 1...Head, 2...Neck, 3...Torso, 4...
Leg, 5...first blade, 6...screw, 7...second
Blade, 8...Driver receiving hole, 9...Washer plate, 1
0...Cushion seat, 11...Corrugated plate, 12...Base material.

Claims (1)

[Scope of utility model registration request] A neck portion 2 that is slightly longer than the height of the peak of the corrugated sheet 11 is provided protruding from the head portion 1, and a body portion 3 that is thinner than the neck portion 2 is provided in a stepped manner at the lower end of the neck portion 2, and the body portion 3 is tapered from the lower end of the body portion 3. A leg portion 4 tapered in the shape of a shape protrudes, a first blade 5 for cutting by rotation is formed on the outer periphery of the leg portion 4, a screw 6 is carved in the body portion 3, and a lower outer peripheral edge of the neck portion 2. A fastener for fixing a corrugated plate, in which a second blade 7 is provided to make a cut by rotation, and a washer plate 9 and a cushion seat 10 are fitted to the neck part 2.