JPH10213109A - Member fastening method and member fastening structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a member fastening method that can simplify fastening work of laminating a plurality of members to fasten them while allowing fastening release work to be performed easily from the opposite side to the fastening work performed side. SOLUTION: A sleeve 1 is fixed to a first member 23 arranged on one side, while a bolt 10 with a head 13 is fitted to a second member 21, arranged on the other side, so as to be extended from the other side to one side, and the first member 23 and second member 21 are overlapped in a state of the bolt 10 piercing the sleeve 1. In order to fasten the first member 23 and second member 21 to each other, the sleeve 1 is fastened to the bolt 10 being deformed radially inward in relation to a shank 14 of the bolt 10. Fastening is performed by a fastening tool 26. The bolt 10 can be detached from the sleeve 1 by rotating the bolt head 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a member fastening method and a member fastening structure in which a plurality of members such as a plurality of panels are overlapped and fastened to each other.

[0002]

2. Description of the Related Art When a plurality of members such as a plurality of panels are sequentially stacked and fastened to each other, a bolt and a nut are generally used. In the case of fastening using a bolt and a nut, when the lowermost side and the uppermost side of the fastening member are accessible, the nut and the bolt can be easily screwed together to fasten the member. However, if only one side can be reached, for example, a bolt or nut required for fastening is fixed to the lowest member so as not to rotate. In the fastening operation, a nut is screwed into the tip of a bolt extending to the uppermost member, or a bolt is penetrated from the uppermost member and screwed to a nut in the lowermost member,
A plurality of members are fastened to each other.

[0003]

As described above, when a plurality of members are fastened, the fastening is released because the bolt or nut is fixed to the lowest member so as not to rotate the bolt or nut. Only the top side can rotate the nut or bolt. That is, the work of releasing the fastening can be performed only from the side that has performed the fastening operation. In other words, there is a problem that the fastening release operation cannot be performed from the side opposite to the side on which the fastening operation was performed (the lowest side in the above example). From the side opposite to the side that performed the fastening work, to perform the fastening release work, using a headless bolt called a through bolt, penetrate from the lowest member to the highest member, and use both bolts A method of screwing a nut to the end of the hole is conceivable. According to this method, the fastening release operation can be performed not only from the side on which the fastening operation is performed but also from the side opposite to the side on which the fastening operation is performed. However, in this method, it is necessary to screw nuts to both ends of the bolt, and the workability of the fastening operation itself of stacking and fastening a plurality of members is poor, and is not suitable for the fastening operation of a plurality of members. .

Accordingly, an object of the present invention is to simplify a fastening operation for stacking and fastening a plurality of members, and to easily perform a fastening release operation from the side opposite to the side on which the fastening operation was performed. An object of the present invention is to provide a member fastening method and a member fastening structure.

[0005]

According to the present invention, there is provided a member fastening method in which a plurality of members such as a plurality of panels are overlapped and fastened to each other, wherein a sleeve member is provided on a first member arranged on one side. A bolt with a head is fixed to a second member arranged on the other side so as to extend from the other side to one side, and the first member and the second member are attached to the sleeve means. Stacking with the bolt penetrating; and deforming the sleeve means radially inward with respect to a shaft of the bolt so as to fasten the first member and the second member to each other. Fixing the member to the member. According to such a member fastening method, since the fastening operation is performed by deforming the sleeve means radially inward with respect to the shaft portion of the bolt, the rotation of the nut when screwing the conventional nut to the bolt is unnecessary. Removing the bolt from the sleeve means by rotating the bolt head on the opposite side of the fastening operation, i.e. on the side of said other member, after fastening, in a simple and quick manner. Can be easily released from the side opposite to the fastening operation.

According to the present invention, there is also provided a member fastening structure in which a plurality of members such as a plurality of panels are overlapped and fastened to each other, and the first member disposed on one side has a sleeve means. A second member, which is fixed and disposed on the other side, is provided with a headed bolt from the other side to the one side, and the first member and the second member are attached to the second member. The member is overlapped with the bolt passing through the sleeve means, and the sleeve means is radially inward with respect to a shaft of the bolt protruding toward the first member superimposed on the second member. The first member and the second member are mutually fastened to each other, thereby providing a member fastening structure. In this member fastening structure, Fastening work is easy and quick For even cancellation of the engagement, it can be easily carried out from the side opposite to the fastening operation side.

In the present invention, the sleeve means can be fixed to the first member by press-fitting or caulking, can be fixed to the first member by welding, and furthermore, the plate-shaped first member is stamped. By doing so, the first member can be formed. The bolt head is formed in a hexagonal shape, and after the fastening, the fastening between the first member and the second member can be released by rotation of the hexagonal head. In the above method of the present invention, the step of fixing the sleeve means to the bolt includes the step of holding the sleeve means on a nosepiece of a fastening tool, and fastening the distal end side of the bolt protruding from the sleeve means and having a small diameter portion formed in the middle. The method may comprise the steps of gripping with a jaw of a tool, pulling out the bolt strongly from its small diameter portion so as to break it, and deforming the sleeve means radially inward with respect to the bolt shaft portion by the nose piece.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings. FIGS. 1 to 3 show several states in which a sleeve means is fixed to a first member arranged on one side of a plurality of members such as panels which are overlapped and fastened to each other. . FIG. 4 shows a state in which a headed bolt is attached to a second member arranged on the other side from the other side toward one side. FIG.
FIG. 6 shows a state in which the first member with the sleeve means and the second member with the bolt are overlapped with the bolt penetrating the sleeve means, and FIG. 6 shows the state in which the first member and the second member overlap. FIG. 7 shows a state before the sleeve means is deformed inward in the radial direction with respect to the extending bolt shaft portion.
Is fixed to the bolt by deforming the sleeve means.
The state where the member and the second member are fastened to each other is shown.
FIG. 8 shows how the fastening is released.

In FIG. 1A, a sleeve 1 comprises a hollow cylindrical portion 2 and a flange 3, and a central portion of the lower surface of the flange 3 has an annular protrusion used for welding such as projection welding. A part 5 is provided. Sleeve 1
As shown in FIG. 1 (B), the protrusion 5 is positioned in the mounting hole of the first member 6, and the portion of the flange 3 including the portion of the protrusion 5 is welded to the first member 6. , The first member 6 is fixed. The sleeve 1 and the first member 6 are formed of a weldable metal.

FIG. 2 shows another embodiment in which the sleeve 1 is fixed to the first member 6. In FIG. 2A, a metal sleeve 1 composed of a cylindrical portion 2 and a flange 3 includes:
At the center of the lower surface of the flange 3, there is provided a projection 7 that can be deformed by press fitting or caulking. As shown in FIG. 2B, the sleeve 1 has a protrusion 7 in a mounting hole of the first member 6.
By press-fitting, or after the insertion of the projection 7
Is fixed to the first member 6 by performing a caulking operation so as to increase the diameter. Since no welding is performed in the case of FIG. 2,
The first member 6 may not be made of metal, and may be, for example, a member made of a plastic material.

FIG. 3 shows a sleeve 9 fixed to the first member 6.
Is shown as yet another way of obtaining. In FIG. 3, a cylindrical sleeve 9 is obtained by punching (so-called burring) a first member 6 made of sheet metal. This sleeve 9 is formed by punching the first member 6.
The punched holes are formed by standing up. Therefore, the sleeve 9 is integrated with the first member 6. The manner of fixing the sleeve to the first member may be any of the above, and may be in another mode such as adhesion. In any case, the sleeve is fixed so as not to rotate around the axis with respect to the first member.

FIG. 4A shows a bolt 10 used for fastening.
FIG. 4B shows that the second member 11 arranged on the side opposite to the first member 6 (that is, the other side) has a bolt 1
0 shows the state where it was attached. The bolt 10 includes a hexagonal head 13 and a threaded shaft 14, and a small diameter portion 17 is formed in the middle of the shaft 14 so that the distal end portion 15 can be broken. Further, a portion of the bolt 10 adjacent to the head 13 of the shaft portion 14 is provided with a groove 18 in the circumferential direction.
Are formed. The circumferential groove 18 receives the projection 19 formed in the mounting hole of the second member 11 and
To prevent the bolts 10 attached to the bolts from falling off.

FIG. 5 shows an inner panel 21 of an automobile as a second member, and a bracket 23 as a first member welded to a reinforcing pipe 22 before being fastened to the inner panel 21 in order to reinforce the inner panel 21. The state is shown. The sleeve 1 is fixed to a bracket 23 welded to the reinforcing pipe 22 by welding, press fitting, or caulking so as not to rotate around the axis. The shaft 14 of the bolt 10 passes through the mounting hole 25 of the inner panel 21, and the projection 19 of the mounting hole fits into the circumferential groove 18, and the bolt 1
No. 0 is attached to the inner panel 21 in a state where it is prevented from falling off. Then, the inner panel 21 and the bracket 23 are overlapped with each other so that the shaft portion 14 of the bolt 10 passes through the hollow portion of the sleeve 1. FIG. 5 shows a state before the inner panel 21 and the bracket 23 are overlapped.

FIG. 6 shows a state in which the inner panel 21 and the bracket 23 are overlapped with each other so that the shaft portion 14 of the bolt 10 passes through the hollow portion of the sleeve 1. In this manner, when the inner panel 21 and the bracket 23 are overlapped, the distal end portion 15 of the bolt shaft 14 projects from the sleeve 1. A nosepiece 27 of a fastening tool 26 as described in JP-A-7-290184 is disposed on the protruding tip portion 15 of the shaft portion 14 and the sleeve 1. The nosepiece 27 of the fastening tool 26 surrounds the sleeve 1 and the jaws inside the nosepiece are
The fastening tool 26 is set on the sleeve 1 and the bolt shaft portion 14 so as to firmly hold the distal end portion 15 of the bolt.

When the fastening tool is operated, the jaw is lifted with a strong force upward in FIG.
By the reaction, the nosepiece 27 descends and the sleeve 1
Nosepiece 27 having an inner diameter portion smaller than the outer diameter of
Starts narrowing so as to deform the cylindrical portion 2 of the enclosed sleeve 1 radially inward with respect to the shaft portion 14 of the bolt 10. When the operation of the fastening tool is continued, the jaw further raises the gripped tip portion 15 to break the shaft portion at the small diameter portion 17. At the time of this break, the nosepiece 27 sufficiently reduces the diameter of the cylindrical portion 2 of the sleeve 1 inward in the radial direction, and firmly fixes the sleeve 1 to the shaft portion of the bolt 10. Also,
In this fixing, the shaft 14 of the bolt 10 is strongly raised and the sleeve 1 is strongly lowered, so that the first portion between the bolt head 13 and the flange 3 of the sleeve 1 is formed.
The bracket 23 as a member and the inner panel 21 as a second member are closely adhered to each other, and the integrity of the two members at the time of fastening is ensured. In the illustrated example, the number of members to be fastened is two, but it goes without saying that three or more members may be used. As described above, since the sleeve 1 is deformed to the bolt 10 radially inward and fastened, the conventional nut is not required to rotate when screwing the nut to the bolt, and the fastening operation is performed easily and in a short time. be able to.

FIG. 7 shows the state after the fastening.
The bracket 23 as the first member and the inner panel 21 as the second member are connected to each other by the strong connection between the deformed cylindrical portion 2 of the sleeve 1 and the shaft portion 14 of the bolt 10.
Between the head 13 of the sleeve 1 and the flange 3 of the sleeve 1, and the inner panel 21 can be reinforced by the reinforcing pipe 22 to the same strength as when the pipe 22 is directly welded to the inner panel 21. Was. This allows
The inner panel 21 and the reinforcing pipe 23 can be separated without welding, and the two can be connected to each other on an outfitting line of an automobile, and the work of welding the reinforcing pipe 23 to the inner panel 21 can be eliminated. Was.

FIG. 8 shows a state in which the hexagonal head 13 of the bolt 10 is rotated with a spanner or the like to remove the bolt 10 from the sleeve 1, thereby releasing the fastening between the inner panel 21 and the bracket 23. I have. Thus, after the fastening, the bolt 10 can be removed from the sleeve 1 by rotating the bolt head 13 on the side (the lower side in the figure) opposite to the side of the fastening operation.

[0018]

According to the present invention, since the fastening operation is performed by deforming the sleeve means radially inward with respect to the shaft of the bolt, the rotation of the nut when screwing the conventional nut to the bolt is performed. And the fastening operation can be performed easily and in a short time, and after the fastening, the bolt can be removed from the sleeve means by rotating the bolt head on the side opposite to the side of the fastening operation. Also, the release of the fastening on the side opposite to the fastening operation can be easily performed.

[Brief description of the drawings]

1A and 1B show a first mode of fixing a sleeve to a first member, wherein FIG. 1A is a front view of the sleeve, and FIG. 1B is a front view after fixing the sleeve to the first member.

FIGS. 2A and 2B show a second embodiment in which a sleeve is fixed to a first member. FIG. 2A is a front view of the sleeve, and FIG. 2B is a front view after fixing the sleeve to the first member.

FIG. 3 is a view showing a sleeve formed by stamping a first member.

4A and 4B show how a bolt is attached to a second member. FIG. 4A is a front view of the bolt, and FIG. 4B shows a state where the bolt is attached to the second member.

FIG. 5 is a diagram showing a state immediately before fastening a bracket of a reinforcing pipe as a first member and an inner panel as a second member using a bolt and a sleeve.

FIG. 6 is a view showing a state before a fastening tool is set in order to fix a sleeve to a bolt with respect to a bolt shaft extending from the first member and the second member which are overlapped.

FIG. 7 is a view showing a state in which a sleeve is deformed and fixed to a bolt, and a first member and a second member are fastened to each other.

FIG. 8 is a view showing release of fastening.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sleeve 2 Cylindrical part of sleeve 3 Flange of sleeve 5 Projection 6 First member 7 Projection for press-fitting or caulking 9 Sleeve 10 Bolt 11 Second member 13 Hexagonal head 14 Bolt shaft part 15 Tip part of shaft part 17 Small diameter portion 18 Peripheral groove 19 Mounting hole protrusion 21 Inner panel as second member 22 Reinforcement pipe 23 Bracket as first member 26 Fastening tool 27 Nose piece

Claims (8)

[Claims] 1. A member fastening method in which a plurality of members such as a plurality of panels are overlapped and fastened to each other, wherein a sleeve means is fixed to a first member arranged on one side and arranged on the other side. A headed bolt is attached to the second member so as to extend from the other side to the one side, and the first member and the second member are brought into a state in which the bolt passes through the sleeve means. And deforming the sleeve means radially inward with respect to the shaft of the bolt so as to fasten the first member and the second member to each other, and fixing the sleeve means to the bolt. A member fastening method, comprising: 2. The method of claim 1, wherein said sleeve means is secured to said first member by one of press-fitting, caulking and welding. 3. The method according to claim 1, wherein said sleeve means is formed in said first member by stamping a first member in the form of a plate. 4. The method of claim 1, wherein the step of securing the sleeve means to the bolt includes holding the sleeve means on a nose piece of a fastening tool, projecting from the sleeve means and forming a small diameter portion therebetween. The leading end side of the bolt is gripped by a jaw of a fastening tool, and the bolt is pulled out so as to break from the small diameter portion, and the nose piece deforms the sleeve means radially inward with respect to the bolt shaft portion. A method comprising: 5. The method according to claim 1, wherein the bolt head is formed in a hexagonal shape, and after the fastening, the fastening of the first member and the second member is released by rotation of the hexagonal head. A method comprising: 6. A member fastening structure in which a plurality of members such as a plurality of panels are overlapped and fastened to each other, a sleeve member is fixed to a first member arranged on one side, and the other side is fixed to a first member arranged on one side. A headed bolt is attached to the second member disposed from the other side toward the one side, and the first member and the second member are provided with the sleeve means. The bolt is pierced in a penetrating state, and the sleeve means is deformed radially inward with respect to a shaft portion of the volt protruding toward the first member superposed on the second member, so that the boss is formed on the volt. The member fastening structure, wherein the first member and the second member are fastened to each other. 7. The member fastening structure according to claim 6, wherein said sleeve means is fixed to said first member by any one of press-fitting, caulking and welding. 8. The member fastening structure according to claim 6, wherein said sleeve means is formed on said first member by stamping a plate-shaped first member.