JP2001213357A - Fastening structure and steering member fastening structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastening structure in which a fastened part hardly comes off even under excessive load. SOLUTION: A flange 30c interposed between a pair of bent pieces 44, 44 is formed at a bar body 30a, and the bent pieces 44 are fastened through the flange 30c to fix the bar body 30a to a bracket 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fastening structure for fastening a rod to a bracket. The present invention also relates to a steering member fastening structure formed by fastening a pair of steering members to a joint bracket.

[0002]

2. Description of the Related Art A steering member extending in the vehicle width direction is mounted between left and right front pillars of a vehicle body.

The basic functions of this steering member are as follows: Steering column shaft (steering post)
Installation, air conditioning unit, air bag unit, electrical unit, etc., and strength improvement.

[0004] FIG. 4 is a schematic diagram of Japanese Patent Application Laid-Open No. H11-129940.
FIG.

[0005] The steering member 10 is attached to left and right front pillars of the vehicle body, and extends in a vehicle width direction in an instrument panel in front of the vehicle compartment. The steering member 10 is configured as a hollow molded product having a small diameter on the passenger seat side and a large diameter on the driver seat side for weight reduction. At a substantially central portion of the steering member 10, a stay mounting bracket 11 for mounting a stay having the other end fixed to the vehicle body floor is welded. Steering support brackets 12 and 13 are fixed to the steering support portion 10a near the driver's seat. One steering support bracket 12 is mounted on a steering column shaft, and the other steering support bracket 13 is mounted on a dash upper on the vehicle body side.

As another prior art, a small-diameter steering member on the passenger seat side and a large-diameter steering member on the driver seat side are formed as separate members, and these two steering members are connected by a joint bracket.

FIGS. 5 and 6 show a fastening structure between the small diameter side steering member 20 and the joint bracket 21 in the prior art.

In this prior art, a small-diameter steering member 20 is interposed in a rectangular tube-shaped bracket 21 formed such that a pair of opposed bent pieces 22 project in a flange shape from a cut 23. A pair of bent pieces 22
Are fastened using bolts 24 and nuts 25 so that the small-diameter steering member 20 is fixed to the square-tube bracket 21. The large-diameter steering member also has a similar fastening structure.

The fastening method using the bolt 24 and the nut 25 is a method suitable for a material whose strength is reduced by heat, for example, aluminum. That is, there is welding as another fastening method, but the welding deteriorates the strength due to the thermal effect, and is not suitable for materials such as aluminum. By the way, it is possible to restore the strength by heat-treating the material whose strength has been deteriorated by welding, but in this process, the entire heat, except for the welded parts that are not affected by heat, will be heat-treated, This leads to increased costs.

[0010]

In the prior art shown in FIGS. 5 and 6, a pair of bent pieces 22 opposing each other are pressed against each other by bolts 24 and nuts 25, so that the steering member 20 is fixed by a square tube type bracket 21. By tightening from around, the steering member 20
Are fixed to the joint bracket 21, so that these connections are weak. Therefore, when an excessive load is applied, such as at the time of a vehicle collision, the steering member 20 may come off the joint bracket 21 as shown in FIG. 7 and an unexpected serious situation may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a fastening structure and a fastening structure for a steering member, in which a fastening portion is not easily detached even when an excessive load is applied.

[0012]

According to one aspect of the present invention,
In a fastening structure in which a pair of opposing bent pieces are fitted with a rod to a bracket formed at a cut portion, and the rod is fixed to the bracket by fastening the pair of bent pieces,
A flange interposed between the pair of bent pieces is formed on the rod, and the rod is fixed to the bracket by fastening the bent pieces through the flange.

According to this invention, since the pair of bent pieces and the flange are fixedly fastened together, the coupling force of these fastening structures can be improved.

Further, according to one aspect of the present invention, a pair of opposing bent pieces are provided at a cut portion on both sides, respectively, and a joint bracket and two steering members are provided. In the steering member fastening structure in which the two steering members are fixed to the joint bracket by fitting and fastening the pair of bending pieces, the pair of bending members are attached to the ends of the steering members. It is characterized in that a flange interposed between the pieces is formed, and the steering member is fixed to both sides of the joint bracket by fastening the flange and the bent piece together.

According to the present invention, the pair of bent pieces formed on both sides of the joint bracket are fixedly fastened together with the flanges formed on the two steering members, respectively. Can be improved.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of a steering member 30 to which the present invention is applied.

The steering member 30 is connected by a joint bracket 40 to two hollow members as separate members: a small-diameter passenger seat member 30a located on the passenger seat side and a large-diameter driver seat member 30b located on the driver seat side. It is constituted by that. The passenger seat member 30a and the driver seat member 30b are made of lightweight metal such as aluminum.

At the end of the passenger seat member 30a and the end of the driver seat member 30b, side brackets 31 and 32 made of, for example, aluminum are fixed, respectively, and steering is performed via these side brackets 31 and 32. The member 30 is fixed between the front pillars of the vehicle body.

A first steering support bracket 33 is provided at a steering mounting portion of the steering member 30.
Further, the second steering support bracket 34 is fixed by welding or a bolt, a nut or the like.

The first steering support bracket 33 is
It is fixed to a steering column shaft (not shown) for supporting the steering, and is connected to the second steering support bracket 34 at the upper surface or the lower surface. Second steering support bracket 34
Is connected at its front end to a dash upper (not shown).

The joint bracket 40 is made of, for example, magnesium, and a stay mounting bracket 41 is formed below the lower portion thereof so that the other end is fixed to the vehicle body floor. One end of the stay is fixed.

FIG. 2 is a sectional view taken along line DD of FIG. 1, and FIG. 3 is a sectional view taken along line EE of FIG.

As shown in these figures, an insertion hole 42 into which the passenger seat member 30a is inserted is formed on one side of the joint bracket 40. In this insertion hole,
A cut 43 is formed, and a pair of bent pieces 44 protrude from the cut 43.

On the other hand, an end of the passenger seat member 30a is provided with a flange 30c for interposing between the pair of bent pieces 44.
Are formed. The flange 30c may be provided over the entire length of the passenger seat member 30a, but in this case, necessary parts are left out and other parts are excluded for weight reduction. That is, after forming the passenger seat member 30a in which the flange 30c is integrally formed over the entire length by extrusion or the like, unnecessary portions are cut and removed.

The pair of bent pieces 44 and the flange 30
The bolt insertion holes 45 and 37 are formed in c.

When connecting the passenger seat member 30a to the joint bracket 40, the passenger seat member 30a is inserted into the insertion hole 42 on one side of the joint bracket 40,
With the flange 30c interposed between the pair of bent pieces 44, the pair of bent pieces 44 and the flange 30c are jointly fastened with the bolt 50 and the nut 51 (or screw), so that the passenger seat member 30a is connected to the joint bracket 40. Fixed to.

On the other hand, the other side of the joint bracket 40 is formed with an insertion hole 46 into which the driver seat member 30b is inserted, as shown in FIG. A cut 47 is also formed in the insertion hole 46, and a pair of bent pieces 48 protrude from the cut 47.

At the end of the driver's seat member 30b, a bent piece 4
A flange 30d for interposing between 8 is formed. As with the above, the flange 30d is also left with only a portion corresponding to between the bent pieces 48 for weight reduction.

The pair of bent pieces 48 and the flange 30
D has bolt insertion holes 49 and 38, respectively.

When connecting the driver seat member 30b to the joint bracket 40, the driver seat member 30b is inserted into the insertion hole 46 on the other side of the joint bracket 40,
In a state where the flange 30d is interposed between the pair of bent pieces 48, the pair of bent pieces 48 and the flange 30d are fastened together by the bolt 52 and the nut 53 (or screw), so that the driver seat member 30b is connected to the joint bracket 40. Fixed to.

As described above, in this embodiment, flanges are respectively formed at the end portions of the passenger seat member 30a and the driver seat member 30b, and when the passenger seat member 30a and the driver seat member 30b are fixed to the joint bracket 40, Since the flange is fixed together with the bent piece of the joint bracket 40 by a bolt, a nut, or the like, the members 30a, 30b do not fall off the joint bracket 40 unless the bolt, nut, or the bracket 40 is broken. Is significantly improved as compared with the prior art.

Therefore, in the event of a collision or the like, the possibility that the passenger seat member 30a and the driver seat member 30b will come off the joint bracket 40 and cause an unexpected situation can be reduced.

In the above embodiment, the present invention is applied to the fastening structure of the steering member.
The present invention provides a fastening structure in which a pair of opposing bent pieces is fitted to a bracket formed at a cut portion, and a rod is fixed to the bracket by fastening the pair of bent pieces. Can be adopted for any fastening structure.

In the above embodiment, the steering member 30 is made of aluminum and the joint bracket 40 is made of magnesium in order to reduce the weight, but other metals may be used. .

In the above embodiment, the steering members 30a and 30b having different diameters are employed. However, the present invention may be applied to the coupling of steering members having the same diameter.

[0037]

According to the present invention, the rod is fitted to the bracket having a pair of opposing bent pieces formed at the cuts,
In the fastening structure in which the rod is fixed to the bracket by fastening the pair of bent pieces, the pair of bent pieces and the flange are fixed together so that the connection of these fastening structures can be strengthened. it can.

According to the present invention, the two steering members are each formed with a flange, and the pair of bent pieces formed on both sides of the joint bracket are fixed together with these flanges to fix the two. Since the steering member is fixed to the joint bracket, the connection of these fastening structures can be strengthened, and in the event of a collision, these steering members come off the joint bracket, causing an unexpected situation. Possibility can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line DD of FIG. 1;

FIG. 3 is a sectional view taken along line EE of FIG. 1;

FIG. 4 is a perspective view showing a conventional technique.

FIG. 5 is a perspective view showing a conventional technique.

FIG. 6 is a sectional view showing a conventional technique.

FIG. 7 is a diagram showing a problem of the related art.

[Explanation of symbols]

 Reference Signs List 30 steering member 30a passenger seat member 30b driver seat member 30b 30c flange 30d flange 31 side bracket 32 side bracket 33 first steering support bracket 34 second steering support bracket 37 bolt insertion hole 38 bolt insertion hole 40 joint bracket 41 stay mounting bracket 42 insertion hole 43 cut 44 bent piece 45 bolt insertion hole 46 insertion hole 47 cut 47 48 bent piece 49 bolt insertion hole

Claims (4)

[Claims] 1. A fastening structure in which a rod is fitted into a bracket having a pair of opposed bent pieces formed at a cut portion, and the rod is fixed to the bracket by fastening the pair of bent pieces. A fastening structure, wherein a flange interposed between the pair of bent pieces is formed on a body, and the rod is fixed to the bracket by fastening the bent pieces through the flange. 2. A fastening structure wherein the pair of bent pieces and the flange are fastened using bolts and nuts or screws. 3. A joint bracket having a pair of opposing bent pieces formed at cuts on both sides thereof, and two steering members, wherein the steering members are fitted from both sides of the joint bracket, respectively. In a fastening structure of a steering member, wherein the two steering members are fixed to a joint bracket by fastening a pair of bent pieces, an end portion of each of the steering members is interposed between the pair of bent pieces. A fastening structure for a steering member, wherein a flange is formed, and the steering member is fixed to both sides of the joint bracket by fastening the flange and the bent piece together. 4. A fastening structure wherein said pair of bent pieces and flanges are fastened using bolts and nuts or screws.