JPH10217041A - Fixing method for steel plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a manufacturing time by providing a fitting allowance between the outer diameter of the serration part of a serration bolt, or the press-in part of a calking bolt, and the hole diameter of a steel plate, to integrally fix the steel plate by fitting force of these bolts. SOLUTION: A rubber elastic body 3 (integrated with an inner tube member 30) is pressed into an outer tube member 2 to be integrated, and a serration bolt 4 is fitted into both holes 23 and 13 so as to be concurrently pressed in, while a bottom plate 1, wherein the hole 13 is position-aligned so as to be accorded with and conformed to the hole 23 of the outer tube member 2, is retained integrally with the outer tube member 2 in an unmovable and closely- fitted condition. This can integrally fix the bottom plate 1, the outer tube member 2, and the rubber elastic body 3 without welding, thereby reducing man days and a manufacturing cost by the part of unnecessary welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel plate for fastening serrated bolts or caulking bolts into corresponding holes of at least two or more steel plates having holes at a plurality of corresponding positions. The fixing method.

[0002]

2. Description of the Related Art For example, when two steel plates are mounted on an appropriate mounting member, the corresponding holes of these steel plates are positioned in a state of being aligned and then welded together.
Next, a bolt is screwed between the hole of the integrated steel plate and the hole on the mounting member side.

[0003]

However, since such a fixing method involves welding, equipment for the welding is required, and the number of man-hours is increased by the amount of welding work, which leads to an increase in cost. .

[0004] In view of the above circumstances, an object of the present invention is to provide a method for fixing a steel sheet that can reduce the manufacturing cost and can easily shorten the manufacturing time. .

[0005]

That is, according to the first aspect of the present invention, a serration bolt or a serration bolt is formed between the corresponding holes of at least two or more steel plates provided with through holes at a plurality of corresponding positions. A method of fixing a steel plate for fastening two or more steel plates by press-fitting a caulking bolt, wherein a fitting margin is provided between an outer diameter of a serration portion of the serration bolt or a press-fitting portion of the caulking bolt and a hole diameter of the steel plate, The at least two steel plates are integrally fixed by a fitting force of the bolt.

[0006]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a fitting member or the like to which a fixing method according to the present invention is applied. The fitting member or the like is a strut mount for attaching a suspension rod (or a shock absorber shaft or the like) of an automobile to a vehicle body side. A bottom plate 1 and an outer cylindrical member 2 formed of metal such as a hot-rolled steel plate, a rubber elastic body 3 press-fitted into the outer cylindrical member 2, and a serration bolt 4. I have.

The bottom plate 1 has a substantially hexagonal cylindrical portion (a cylindrical shape or any other shape is applicable) 11 formed at the center thereof, and a generally triangular flange 12 is spread around the central portion. In addition, as shown in FIG. 2, the serration bolts 4 are press-fitted into holes 13 provided at three points in a conformal manner. A number of grooves into which the serrations of the serration bolts 4 are inserted are formed in the holes 13 so as to correspond to the grooves of the serrations.

The outer cylindrical member 2 has a substantially hexagonal cylindrical portion (a cylindrical shape or other various shapes can be applied) 21 corresponding to the bottom plate 1 formed at a central portion thereof, and has a periphery similar to the flange 11 of the bottom plate 1. The flange 22 has an expanded shape, and holes (simple round holes) 23 into which the serration portions 4A of the serration bolts 4 are press-fitted are provided at three corresponding locations, similarly to the bottom plate 1. The holes 23 are configured so that, when the serration bolts 4 are press-fitted, the respective ridges extending in the axial direction around the serrations 4 </ b> A are fitted while shaving the periphery of the holes 23. I have.

The rubber elastic body 3 is formed integrally with an inner cylindrical member 30 which is previously formed into an appropriate shape from a steel plate.

As shown in FIG. 3, the serration bolt 4 has a length obtained by adding at least the thicknesses of the two flanges 22 and 12 of the bottom plate 1 and the outer cylinder member 2 to the upper part of the trunk adjacent to the head. The serration part 4A longer than the length t is provided.
Many grooves are formed. The body except for the serration 4A is provided with a thread 4B having an external thread. The strut mount configured in this way
The suspension rod is inserted into and fixed to the inner cylinder member 30, and is fixed to the body of the automobile by tightening the screw portion 4 </ b> B of the serration bolt 4.

Next, a description will be given of a method of integrally fixing the fitting member and the like according to this embodiment. First, if the rubber elastic body (integral with the inner cylinder member 30) 3 is press-fitted into the outer cylinder member 2 and integrated, the hole 13 is aligned so as to correspond to and coincide with the hole 23 of the outer cylinder member 2. The serration bolts 4 are fitted into the two holes 23 and 13 at the same time while the bottom plate 1 is held integrally with the outer cylinder member 2 in a tight contact state so as not to move.

As a result, as shown in FIG.
The outer cylinder member 2 and the rubber elastic body 3 can be integrally fixed without the need for welding.

Therefore, according to this fixing method, not only welding is not required, but also the man-hour and the manufacturing cost can be reduced, and the rubber elastic body 3 particularly sensitive to heat can be fixed integrally. become.

In this embodiment, a serration bolt is used, and a plurality of members are integrally fixed by using a serration portion of the serration bolt.
A plurality of members may be integrally fixed by using a caulking bolt and utilizing a press-fit portion of the caulking bolt.

[0015]

As described above, according to the present invention, a fitting fit is provided between the outer diameter of the serration portion of the serration bolt or the press-fit portion of the caulking bolt and the hole diameter of the steel plate. Since at least two steel plates are fixed together, no welding work is required, so that manufacturing costs can be reduced and man-hours can be reduced, and the manufacturing time can be shortened easily. realizable. In addition, there is an effect that the work of fixing the steel plates can be easily realized anywhere because the welding is not required.

[Brief description of the drawings]

FIG. 1 is an exploded view showing a fitting member to which a fixing method according to the present invention is applied.

FIG. 2 is a plan view showing a fitting member and the like fixed and integrated by a fixing method.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom plate 2 Outer cylinder member 3 Rubber elastic body 30 Inner cylinder member 4 Serration bolt

Claims (1)

[Claims] 1. A steel sheet for fastening two or more steel sheets by press-fitting a serration bolt or a caulking bolt between the corresponding holes of at least two or more steel sheets provided with holes penetrating at a plurality of corresponding positions. Fixing method, wherein a fitting margin is provided between the outer diameter of the serration portion of the serration bolt or the press-fit portion of the caulking bolt and the hole diameter of the steel plate, and the at least two steel plates are integrally fixed by the fitting force of the bolt. A method for fixing a steel plate, characterized in that the steel plate is fixed.