JPH07197920A - Fixing bolt for metal building material and fixing structure therefor - Google Patents

Abstract

PURPOSE:To smoothen fixture of a metal construction material by means of a fixing bolt by avoiding simultaneous locking action on a metal plate and a tip turn-over piece. CONSTITUTION:A synthetic resin layer 2 is backed at the back surface of a metal plate 1. A tip turn-over piece 7 of the metal plate 1 is turned over approximately in parallel to the metal plate 1, to be inserted into the synthetic resin layer 2, thus obtaining a fixing bolt for a metal building material. A boring drill 4 is formed at the tip of a bolt main body 3. A screw 5 for screwing and advancing is located in the intermediate portion of the bolt main body 3. The screw 5 is located at such a position as not to simultaneously act on both the metal plate 1 and the tip turn-over piece 7 in boring a fixing bed 6 by the drill 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing bolt for a metal building material and a fixing structure for the metal building material, and more particularly to a technique for smoothly fixing the metal building material with the fixing bolt.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a backside of a metal plate 1 is lined with a synthetic resin layer 2, and a tip-end folded piece 7 of the metal plate 1 is folded substantially parallel to the metal plate 1 and then folded back to be synthesized. Fixing bolt Aa of metal building material inserted inside the resin layer 2
In the drilling portion 4 at the tip, the threaded portion 5 acts on the metal plate 1 and the tip-turning piece 7 for making a hole in the mounting base 6 of the section steel of the channel material.

[0003]

However, in the case of such a structure, the metal plate 1 and the tip-returning piece 7 thereof act on the threaded portion 5 during drilling by the drill portion 4, so that the fixing bolt Aa is fixed. It tries to advance the metal building material Aa at high speed by the propulsive force of the drill part 4, but the fixing bolt A
The metal plate 1 and the tip folding piece 7 act on a at the threaded portion 5 thereof to prevent the fixing bolt Aa from advancing at a high speed, and these act like a lock nut to advance the fixing bolt Aa. And the tightening hole formed in the head of the fixing bolt Aa is crushed, or when the tightening hole is not crushed and a tool having a weak tightening torque is used, the fixing bolt Aa cannot be tightened. there were.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a fixing bolt for a metal building material capable of smoothly fixing the metal building material with the fixing bolt.

[0005]

According to the first aspect of the present invention, the synthetic resin layer 2 is lined on the back surface of the metal plate 1, and the tip-end folded piece 7 of the metal plate 1 is folded substantially parallel to the metal plate 1. A fixing bolt for a metal building material inserted inside the synthetic resin layer 2, wherein a drill portion 4 for drilling is formed at the tip of the bolt body 3, and a screw for screwing is provided at the middle portion of the bolt body 3. A portion 5 is formed, and the threaded portion 5 is provided at a position where it does not act on both the metal plate 1 and the tip folding piece 7 at the same time when the attachment base 6 is drilled by the drill portion 4.

In the second aspect, the synthetic resin layer 2 is lined on the back surface of the metal plate 1, and the tip folding piece 7 of the metal plate 1 is provided.
Is a structure in which the metal building material is fixed substantially parallel to the metal plate 1 and folded back and inserted into the synthetic resin layer 2 by means of a fixing bolt. The drill body 4 for drilling is provided at the tip of the bolt body 3. A threaded portion 5 for screwing is formed in the middle of the bolt body 3, and the threaded portion 5 acts on both the metal plate 1 and the tip folding piece 7 at the same time when the mounting base 6 is drilled by the drill portion 4. It is characterized in that the fixing bolt A is provided at a position not provided, and the screw portion 5 is screwed into the tip folding piece 7 at the end of tightening by the screw portion 5.

In the third aspect, the synthetic resin layer 2 is lined on the back surface of the metal plate 1, and the tip folding piece 7 of the metal plate 1 is provided.
Is a structure in which the metal building material is fixed substantially parallel to the metal plate 1 and folded back and inserted into the synthetic resin layer 2 by means of a fixing bolt. The drill body 4 for drilling is provided at the tip of the bolt body 3. The bolt body 3 is formed with a threaded portion 5 for screwing in the middle portion of the bolt body 3, and the threaded portion 5 simultaneously acts on both the metal plate 1 and the tip folding piece 7 when the mounting base 6 is drilled by the drill portion 4. It is characterized in that the fixing bolt A is formed at a position not provided, and that the screw portion 5 does not act on the tip folding piece 7 at the end of tightening by the screw portion 5.

According to a fourth aspect of the present invention, at the end of tightening by the threaded portion 5, the threaded portion 5 is provided with a tip folding piece 7.
It is characterized in that it is formed at a position to be screwed into. In the fifth aspect, at the terminal end of tightening by the threaded portion 5, the threaded portion 5 is provided with the tip folding piece 7.
It is characterized in that it is formed in a position that does not act on.

[0009]

According to the first aspect of the present invention, when the mounting base 6 is drilled in the drill portion 4, the screw portion 5
Does not act on both the metal plate 1 and the tip folding piece 7 at the same time, and avoids the locking action due to acting on both, so that the fixing bolt A advances smoothly. The tightening hole at the head of the fixing bolt A is not crushed, and the tool can be tightened smoothly even if the tightening torque is weak.

In the second aspect, as in the first aspect,
The screw portion 5 does not act on both the metal plate 1 and the tip folding piece 7 at the same time, and the locking action caused by acting on both is avoided, and the fixing bolt A is smoothly advanced. Especially, in the tightening end part by the screw part 5,
The threaded portion 5 is screwed into the tip folding piece 7 to enhance the fixing strength of the metal building material 13.

In claim 3, as in claim 1,
Since the threaded portion 5 does not act on both the metal plate 1 and the tip folding piece 7 at the same time, the locking action caused by acting on both can be avoided, and the fixing bolt A can be smoothly advanced. Especially, in the tightening end part by the screw part 5,
The threaded portion 5 does not act on the tip folding piece 7, and reduces the screwing torque of the fixing bolt A.

According to a fourth aspect of the present invention, at the end of tightening by the threaded portion 5, the threaded portion 5 is provided with a tip folding piece 7.
It is formed at a position where it is screwed in to increase the fixing strength of the metal building material 13. In the fifth aspect of the present invention, at the end of tightening by the screw portion 5, the screw portion 5 is formed at a position where it does not act on the tip folding piece 7, and the screwing torque of the fixing bolt A is reduced.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. The metal building material 13 includes a front metal plate 1 and a back metal plate 1a.
A synthetic resin layer 2 such as urethane foam resin is held in a sandwich form between and. A fitting recess 8 is formed at one end of the metal building material A, and a fitting protrusion (not shown) is provided at the other end.
Is formed, and the packing 9 is interposed so that the concave and convex can be fitted. Then, the tip-end folded piece 7 of the metal plate 1 on the surface is made substantially parallel to the metal plate 1 and folded back to be inserted into the synthetic resin layer 2. Further, the tip piece 10 of the back metal plate 1a is also folded back. The tip piece 10 is formed shorter than the tip folding piece 7.
In the metal building material 13, the back metal plate 1a may be omitted.

The fixing bolt A has a tightening hole 12 formed in its head 11, a drill portion 4 for drilling is formed at the tip of the bolt body 3, and a screwing portion 4 is formed in the middle portion of the bolt body 3. A threaded portion 5 is formed. And the screw part 5
Is a mounting base 6 such as a channel material by the drill portion 4.
It is provided at a position where it does not act on both the metal plate 1 and the tip folding piece 7 at the same time when punching. In particular,
As shown in FIG. 1, the length of the drill portion 4 is set to be substantially equal to the thickness of the synthetic resin layer 2, and after the drill portion 4 penetrates the mounting base 6 made of a steel material such as a channel material, the screw portion 5 is formed.
3 has a structure in which the tip end portion of the screw thread is screwed into the mounting base 6 and acts on the tip folding piece 7, or as shown in FIG. 3, the length including the screw portion 5 and the drill portion 4 is set to the synthetic resin layer 2 After the drill part 4 penetrates the mounting base 6 made of steel such as a channel material, the tip of the threaded portion 5 is screwed into the mounting base 6 and the tip folding piece 7 is formed. It may be a structure that does not work.

As described above, the threaded portion 5 is provided at a position where it does not act on both the metal plate 1 and the tip folding piece 7 at the same time when the attachment base 6 is drilled by the drill portion 4, and the attachment base 6 is formed in the drill portion 4. When the perforation is performed on the metal plate 1, the metal plate 1 and the tip folding piece 7 do not act simultaneously, and the locking action caused by acting on both can be avoided and the fixing bolt A can be smoothly advanced. Therefore, the tightening hole in the head of the fixing bolt A is not crushed, and the tool can be tightened smoothly even if the tightening torque is weak.

As in the embodiment shown in FIG. 1, when the screw portion 5 is screwed into the tip folding piece 7 at the tightening end portion by the screw portion 5, the fixing strength of the metal building material 13 is enhanced. At this meeting, the screw part 5
It may be screwed into both the metal plate 1 and the tip folding piece 7. The packing 14 is inserted through the under-neck portion of the fixing bolt A to maintain watertightness when the metal building material A is fixed.

Further, as in the embodiment of FIG. 3, in the tightening end portion by the screw portion 5, when the screw portion 5 does not act on the tip folding piece 7, the screwing torque of the fixing bolt A is set. It alleviates.

[0018]

According to the first aspect of the present invention, the back surface of the metal plate is lined with the synthetic resin layer, and the folded piece at the tip of the metal plate is made substantially parallel to the metal plate and folded back and inserted into the synthetic resin layer. A fixing bolt for metal building materials, in which a drill part for drilling is formed at the tip of the bolt body, a screw part for screwing is formed in the middle part of the bolt body, and the screw part is the mounting base by the drill part. Since it is installed at a position where it does not act on both the metal plate and the tip folding piece at the same time when drilling, the drill works on both the metal plate and the tip folding piece at the same time when drilling the mounting base. It is possible to avoid the locking action caused by acting on both of them, the fixing bolt can be smoothly advanced, and there is no need to crush the tightening hole of the head of the fixing bolt. To the advantage that even smoothly tightening can be carried in the weak tightening torque tool.

According to a second aspect of the present invention, a synthetic resin layer is lined on the back surface of the metal plate, and the tip-end folded piece of the metal plate is made substantially parallel to the metal plate and folded back to be inserted into the synthetic resin layer. It is a fixing structure with fixing bolts, and a drill part for drilling is formed at the tip of the bolt body, a screw part for screwing is formed in the middle part of the bolt body, and the screw part is attached by the drill part. A fixing bolt is formed at a position where it does not act on both the metal plate and the tip-turning piece at the same time when the base is punched, and a fixing bolt is formed. Similar to the item 1, the screw portion does not act on both the metal plate and the tip folding piece at the same time, and the locking action by acting on both is avoided, and the fixing bolt is It has the advantage that it can be smoothly advanced, it does not crush the tightening hole in the head of the fixing bolt, and that it can perform smooth tightening even with a tool with a weak tightening torque. In the section, since the threaded portion is screwed into the tip folding piece, there is an advantage that the fixing strength of the metal building material can be increased.

According to a third aspect of the present invention, a synthetic resin layer is lined on the back surface of the metal plate, and the tip-end folded piece of the metal plate is substantially parallel to the metal plate and folded back to be inserted into the synthetic resin layer. It is a fixing structure with fixing bolts, and a drill part for drilling is formed at the tip of the bolt body, a screw part for screwing is formed in the middle part of the bolt body, and the screw part is attached by the drill part. The fixing bolt is formed at a position where it does not act on both the metal plate and the tip-turning piece at the same time when the base is punched, and a fixing bolt is formed. Similarly, the screw portion does not act on both the metal plate and the tip folding piece at the same time, and the locking action by acting on both can be avoided.
The fixing bolt can be advanced smoothly, there is no need to crush the tightening hole in the head of the fixing bolt, and
There is an advantage that the tightening can be performed smoothly even with a tool having a weak tightening torque, and in particular, at the terminal end of tightening by the screw part, the screw part does not act on the tip folding piece, so that there is an advantage that the screwing torque of the fixing bolt can be reduced. .

In the fourth aspect of the present invention, since the threaded portion is formed at the position where the threaded portion is screwed into the tip folding piece at the end of tightening by the threaded portion, there is an advantage that the fixing strength of the metal building material can be increased. In the fifth aspect of the present invention, since the threaded portion is formed at the position where it does not act on the tip folding piece at the fastening end portion by the threaded portion, there is an advantage that the screwing torque of the fixing bolt can be reduced.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a cross-sectional view of a state before construction and (b) is a cross-sectional view after construction.

FIG. 2 shows the same fixing bolt, (a) is a plan view,
(B) is a partially broken side view.

3A and 3B show another embodiment of the above, wherein FIG. 3A is a sectional view before construction and FIG. 3B is a sectional view after construction.

FIG. 4 shows the fixing bolt of the above, (a) is a plan view,
(B) is a side view with a part omitted.

FIG. 5 is a cross-sectional view of a conventional example in a construction state.

[Explanation of symbols]

 1 Metal plate 2 Synthetic resin layer 3 Bolt body 4 Drill part 5 Screw part 6 Mounting base 7 Tip folding piece

Claims (5)

[Claims] 1. A fixing bolt for a metal building material, wherein a synthetic resin layer is lined on the back surface of a metal plate, and a bent back piece of the metal plate is made substantially parallel to the metal plate and folded back and inserted into the synthetic resin layer. There is a drill part for drilling at the tip of the bolt body, and a screw part for screwing is formed at the middle part of the bolt body.The screw part is a metal plate when drilling the mounting base with the drill part. A fixing bolt for a metal building material, wherein the fixing bolt is provided at a position where it does not act on both of the end piece and the folded back piece at the same time. 2. A synthetic resin layer is lined on the back surface of the metal plate, and a tip-end folded piece of the metal plate is folded substantially parallel to the metal plate and folded back, and is inserted into the synthetic resin layer by a fixing bolt of a metal building material. It is a fixed structure, a drill part for drilling is formed at the tip of the bolt body, and a screw part for screwing is formed in the middle part of the bolt body. Occasionally, a fixing bolt is formed at a position where it does not act on both the metal plate and the tip folding piece at the same time, and the threaded portion is screwed into the tip folding piece at the end of tightening by the threaded portion. Fixed structure. 3. A synthetic resin layer is lined on the back surface of the metal plate, and a tip-turning piece of the metal plate is made substantially parallel to the metal plate and folded back and inserted into the synthetic resin layer by a fixing bolt of a metal building material. It is a fixed structure, a drill part for drilling is formed at the tip of the bolt body, and a screw part for screwing is formed in the middle part of the bolt body. Sometimes a fixing bolt is formed at a position where it does not act on both the metal plate and the tip-turning piece at the same time, and at the end of tightening by the screw part, the screw part does not act on the tip-turning piece. Construction. 4. The fixing bolt for a metal building material according to claim 1, wherein at the terminal end of tightening with the screw portion, the screw portion is formed at a position to be screwed into the tip folding piece. 5. The fixing bolt for a metal building material according to claim 1, wherein the screw end is formed at a position where it does not act on the tip folding piece at the end of tightening by the screw part.