JPH09242734A - Method for attaching nut or bolt for fixing part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent associative rotation by creating a fixing hole, fixing a fixed plate having a press-piece fixed thereto to a main body by matching the fixing hole to the bolt inserting hole of the main body, fitting a bolt head or a nut in the fixing hole and fixing this by the press-piece. SOLUTION: A fixing hole 11 matched to the shape of the bolt head 5 of a part item fixing bolt 4 or a nut 6 is formed in a fixed plate 9 and a pair of L-shaped press-pieces 10 are fixed by spot welding or the like. The fixed plate 9 is welded and fixed to a main body 1 by matching the fixing hole 11 to the position of the bolt inserting hole 3 of the main body 1. When necessary, this is plated. Then, the bolt head 5 or the nut 6 is fitted in the fixed hole 11 and fixed by bending the press-pieces 10. Thus, a part item 2 is assembled in the main body 1 and even if a nut 7 or a bolt 8 for fastening is fixed, the bolt 4 or the nut 6 is prevented from being associatively rotated. Also, the damage to the screws of the bolt or the nut is prevented by plating and tap setting or die setting is not necessary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of attaching a bolt or a nut for fixing a component to be attached to a bolt insertion hole of the main body in advance for attaching the component to the main body, and in particular, a dedicated material for a steel structure or building. The present invention relates to a method of attaching a bolt or a nut for fixing a component suitable for.

[0002]

2. Description of the Related Art Generally, when a component is assembled to a main body in a material made of steel or a building, a bolt insertion hole is formed in the main body in advance, and the bolt head of the bolt is formed on the surface opposite to the surface on which the component is mounted. Alternatively, a method is used in which a nut is fixed by welding and then fastened with a nut or a bolt from the component side.

For example, as shown in FIG. 5, in a dedicated material for a steel structure to be installed on a road surface or the like, after the main body 1 having a U-shape is installed on the road surface A with the opening downward, When the procedure of assembling the component 2 into the body is taken, it is impossible to put a hand into the body 1 after the body 1 is installed on the road surface. The bolt 4 is inserted into the hole 3 from the inner surface of the main body 1 and the bolt head 5 is welded and fixed to the inner surface of the main body 1, or the nut 6 is welded to a portion of the inner surface of the main body 1 corresponding to the bolt insertion hole 3. It is fixed and the component 2 is installed after the main body 1 is installed on the road surface.
Is a method in which a bolt 4 is passed through the bolt insertion hole 3a and is fastened with a fastening nut 7, or a fastening bolt 8 is fastened and assembled.

In this method, the bolt heads and nuts of the bolts are fixed to the main body to which the parts are assembled in advance, for example, on the back surface of the wall body or the inner surface of the box body. Even if they cannot be inserted, the parts can be assembled to the main body by using the fastening nuts and bolts that are paired with each other.

[0005]

However, in such a method, there are some problems in plating the body to which the bolts or nuts for fixing the parts are fixed by welding.

[0006] One of the problems is that when the body of the bolt for fixing the parts or the body to which the nut is welded and fixed is plated, the screw formed on the bolt or the nut is crushed. Therefore, it is necessary to perform tapping or die standing after plating, and especially when the bolts and nuts are large, considerable time and effort must be taken. In addition, tapping or die standing causes peeling of the plated portion, which requires global finishing or the like.

[0007] The other is to prevent the bolt head of the bolt for fixing the parts and the screw of the nut from being crushed, in order to prevent the bolt head and nut from being welded after the body is plated, welding after plating Is difficult in practice, and the strength of the weld does not appear even after welding, and it is easy to remove. Therefore, it is necessary to finish the welded portion locally.

If the main body and the bolt heads or nuts of the bolts for fixing the parts are not fixed to each other, the parts can be stopped when the nuts or bolts for tightening are used for fastening regardless of the necessity of plating. There is a drawback that the bolts and nuts of 1 turn together.

The present invention solves such a problem and provides a method of attaching a bolt or a nut for fixing a component, which can be used universally.

[0010]

First of all, a fixing plate for a bolt head or a nut is formed by opening a fixing hole into which a bolt head or a nut of a bolt for fixing a component is fitted and fixing a pressing piece of the bolt head or the nut. Is fixed to the main body so that the fixing hole is located in the bolt insertion hole of the main body, and the bolt head or nut is fitted into the fixing hole opened in the fixing plate and is fixed by pressing it with the pressing piece. Provide a nut mounting method.

Then, a fixing hole for inserting a bolt head or a nut of a bolt for fixing a component is opened, and a fixing plate of the bolt head or the nut, which is formed by fixing a pressing piece of the bolt head or the nut, is attached to the bolt of the main body. Fix the bolt to the body so that the fixing hole is located in the insertion hole, and after plating the body, insert the bolt head or nut into the fixing hole opened in the fixing plate and press it with the holding piece to fix it. Alternatively, a method for attaching a nut is provided.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. FIG.
2 to 4 are schematic cross-sectional views showing a state in which a component is assembled to a main body to which a bolt or nut for fixing the component is attached by the attaching method according to the present invention, and FIGS. 2 to 4 show the bolt or nut for fixing the component to the main body. It is a schematic perspective view which shows a procedure.

2 to 4, the bolts or nuts for fixing the parts are attached as follows.

First, referring to FIG. 2, a fixing hole 1 having the shape of a bolt head or a nut for fitting a bolt head or a nut of a component fixing bolt into a plate-shaped fixing plate 9 having an appropriate size.
1 is perforated and a pair of L-shaped pressing heads 10 and 10 for restraining a bolt head or a nut are fixed by spot welding or the like. Here, the pressing pieces 10 and 10 are L-shaped, but the shape is not limited as long as they can hold a bolt head or a nut as described later.

The fixing plate 9 thus constructed is the main body 1
Then, the fixing holes 11 are aligned with the positions of the bolt insertion holes 3 of the main body 1 and are fixed by welding. The main body 1 to which the fixing plate 9 is fixed is plated, for example, hot dip galvanized. When the plating process is not required, the plating process may not be performed.

Then, a bolt head or a nut, in this embodiment the nut 6 is fitted into the fixing hole 11 of the fixing plate 9, and the pressing pieces 10 and 10 are bent and pressed using a jig to be fixed. Even if the bolt head or nut 6 is not welded to the main body 1, the bolt head or the nut 6 is held by the holding piece 10 and therefore does not fall off.

The fixing plate 9 is usually attached to the surface of the main body 1 which is hard to work, which is hard to reach, which does not reach, does not enter, or does not enter easily. Is also within the contemplation of the present invention.

The main body to which the bolts or nuts for fixing the components thus formed are attached, the components are attached as shown in FIG. Here, an embodiment in which a bolt and a nut are attached to one body will be described, but this is due to the convenience of being able to describe both in one embodiment, and the bolt or nut is attached to the body. When installing multiple, generally unified to either one.

First, as described above, the body 1 having the bolts 4 or the nuts 6 for fixing the parts on the inner surface is installed on the road surface A and the parts 2 are assembled. As for the assembly of the component 2, the bolt 4 attached to the body 1 is inserted through the bolt insertion hole 3a that is predrilled in the component 2 and is fastened with the fastening nut 7, or the bolt insertion hole 3a of the component 2 and the body 1 are attached. The bolt insertion holes 3 formed in the holes are aligned and the fastening bolts 8 are inserted and fastened. Even when the fastening nut 7 or the fastening bolt 8 is tightened, the bolt head 5 of the component fixing bolt 4 and the component fixing nut 6 are fitted into the fixing hole 11 of the fixing plate 9 and are restrained. So I don't turn around.

[0020]

As described above, the present invention has the following effects.

In the first and second aspects of the present invention, the bolts or nuts for fixing the parts to the main body are mounted by inserting the bolt heads or nuts into the fixing holes of the fixing plate fixed to the main body. It is easier than welding nuts.

In the first and second aspects, since the bolt head or the nut of the bolt for fixing the component is held by the pressing piece, it does not fall out from the fixing hole and is restrained by the fixing hole, so that the fastening is performed. It will not turn even if tightened with a nut or bolt for use.

In the second aspect of the present invention, the fixing of the fixing head to the main body of the bolt head or the nut of the fixing bolt to the main body is performed by fixing the fixing plate to the main body, plating the main body, and then fixing the fixing plate to the main body. Since the bolt head is inserted into and is pressed by the holding piece, unlike the case where the bolt head or nut is attached to the main body and then the plating treatment is performed, tapping or die standing is not required. Also, it does not require a global finish like welding after plating.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a state in which a component is attached to a body to which a bolt or nut for fixing the component is attached by the method according to the present invention.

FIG. 2 is a perspective view showing an example of a fixing plate in the procedure of the present invention.

FIG. 3 is a perspective view showing an example in which a fixing plate is fixed to a main body in the procedure of the present invention.

FIG. 4 is a perspective view showing an example in which a nut is fitted in a fixing hole of a fixing plate and the nut is pressed by a pressing piece in the procedure of the present invention.

FIG. 5 is a schematic cross-sectional view showing a conventional example in which parts are attached to a main body.

[Explanation of symbols]

 1 Main Body 2 Parts 3 Bolt Insertion Hole 3a Bolt Insertion Hole 4 Parts Fixing Bolt 5 Bolt Head 6 Parts Stopping Nut 7 Fastening Nut 8 Fastening Bolt 9 Fixing Plate 10 Holding Piece 11 Fixing Hole

Claims (2)

[Claims] 1. A fixing plate for a bolt head or a nut, which is formed by forming a fixing hole into which a bolt head or a nut of a bolt for fixing a component is fitted and fixing a pressing piece of the bolt head or the nut, and inserting a fixing plate of the main body into the bolt. Fixing to the main body so that the fixing hole is located in the hole, fitting the bolt head or nut into the fixing hole opened in the fixing plate and pressing it with the holding piece to fix it. installation method. 2. A fixing plate for a bolt head or a nut, which is formed by forming a fixing hole into which a bolt head or a nut of a bolt for fixing a component is fitted and fixing a pressing piece of the bolt head or the nut, and inserting a bolt of the main body into the bolt. The fixing hole is fixed to the main body so that the fixing hole is located in the hole, and after the main body is plated, the bolt head or the nut is fitted into the fixing hole opened in the fixing plate and is fixed by pressing with the pressing piece. How to install bolts or nuts for fixing parts.