JPH10278843A - Steering column mounting structure - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To make full use of through bolts to improve the rigidity of a joint between a steering column and a column bracket, increase the resonance frequency of a steering wheel, and reduce the size of a reinforcing member. SOLUTION: A column bracket 14 having a laterally extending steering support member 13 whose both ends are connected to a vehicle body is supported by the steering support member.
And column mounting member 1 for supporting steering column 5
The column mounting member 19 is fixed to the column bracket 14 by using through bolts 20 at both front and rear positions with respect to the steering support member 13, and the through bolt 20 is attached to the column bracket 14 and the reinforcing member 17. , 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering column mounting structure for supporting and mounting a steering column of an automobile in a predetermined posture.

[0002]

2. Description of the Related Art FIG. 4 is a longitudinal sectional side view showing a main part of a conventional steering column mounting structure, and FIG. 5 is a sectional view taken along line AA. This steering column mounting structure,
A hollow column bracket 1 is formed by an upper plate 2 and a lower plate 3, and a reinforcing member 4 is disposed inside the column bracket 1,
At the position behind the steering column 5, a through bolt 6 is made to penetrate these, and the upper end of the through bolt 6 is fixed to the upper plate 2 by welding W, and the lower end is fixed to the lower plate 3 by welding W. A column mounting member 7 for supporting the steering column 5 is provided with a bolt 8 separate from the through bolt 6 and a nut 9 screwed thereto.
It is fixed to the lower surface of the column bracket 1.

[0003] With this structure, deformation of the upper plate 2 and the lower plate 3 when a vertical load is applied to the steering wheel 10 and the local twisting of the column bracket 1 due to the deformation are prevented. I have.

[0004]

However, in the above-mentioned conventional mounting structure, the through bolt 6 serves only to prevent local deformation, twisting, etc. of the column bracket 1.
It is not effective in securing the rigidity of the joint between the steering column 5 and the column bracket 1, is not efficient in increasing the resonance frequency of the steering wheel, and has a problem that the reinforcing member 4 becomes large. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to utilize through bolts other than to prevent local deformation and twisting of a column bracket. Another object of the present invention is to provide a steering column mounting structure capable of improving the rigidity of a joint between a steering column and a column bracket, increasing the resonance frequency of a steering wheel, and reducing the size of a reinforcing member.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a column bracket supported by the steering support member, which penetrates a lateral steering support member having both ends connected to a vehicle body, and a steering system. A column mounting member for supporting a column, wherein the column mounting member is fixed to the column bracket at both front and rear positions with respect to the steering support member. is there.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A steering column mounting structure according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a main part of a steering column mounting structure according to an embodiment of the present invention, and FIG. 2 is a partially broken side view of the steering column mounting structure according to the embodiment of the present invention.

In the steering column mounting structure according to this embodiment, a column bracket 14 supported by penetrating the steering support member 13 using a laterally oriented steering support member 13 having both ends coupled to the vehicle body, And a column mounting member 19 for supporting the steering column 5. The column mounting member 19 is passed through the column mounting member 19 at both the front and rear positions with respect to the steering support member 13 and fastened to the column bracket 14 by bolts 20 and nuts 21. It is.

The steering support member 13 is shown in FIG.
Are arranged laterally and substantially horizontally in the instrument panel 12 indicated by a two-dot chain line, and have rectangular coupling flanges 24, 24 at both ends. The coupling flanges 24 are coupled to corresponding left and right predetermined portions. It is attached to the body.

The column bracket 14 includes an upper plate 15 fixed to the steering support member 13 by welding.
The lower plate 16 and the lower plate 16 are overlapped to form a hollow, and reinforcing members 17 and 18 are disposed between the upper plate 15 and the lower plate 16 at a position near an end in the front-rear direction of the vehicle body, as shown in FIG. The upper plate 15 and the lower plate 16 are provided with bolt holes 15a and 16a at corresponding locations.

As shown in FIG. 2, the upper plate 15 has a chevron plate 26 at an intermediate position in the front-rear direction.
Are integrally formed with a flat plate portion 27 before and after the flat plate portion 27 and a mating plate portion 28 formed by bending downwardly following the flat plate portions 27, and a bolt hole 15a is formed in each flat plate portion 27.

The lower plate 16 has an abutting plate portion 31 formed by bending into an upwardly projecting bead, a flat plate portion 32 before and after the abutting plate portion 31, and an upward bending following each of the flat plate portions 32. Each of the flat plate portions 32 has a bolt hole 16a.

As shown in FIG. 3, the reinforcing members 17 and 18 are formed of bent corrugated plates. The reinforcing members 17 and 18 are sandwiched between the upper plate 15 and the lower plate 16 with the bent curves along the front-back direction. The bolt holes 15a, 16 of the upper plate 15 and the lower plate 16 are symmetrically arranged with respect to the steering column 5.
The flat plate portion 3 abutting on the lower plate 16 at a position corresponding to a
A bolt hole 36a is formed in a portion 6.

The column bracket 14 is, as shown in FIG. 2, provided by a steering support member 13 passed between the top of the chevron plate 26 of the upper plate 15 and the contact plate 31 of the lower plate 16. Positioning in the front-back direction is performed.

As shown in FIG. 3, the column mounting member 19 integrally includes a cylindrical portion 40 through which the steering column 5 passes and mounting flanges 41 projecting to both lateral sides along a tangential plane of the cylindrical portion 40. The mounting flange 41 has a bolt hole 41a.

The column mounting member 19 is connected to the lower plate 1.
6, a mounting hole 41a of the mounting flange 41, a bolt hole 16a of the lower plate 16
a, bolt holes 36a of the flat plate portions 36 of the reinforcing members 17 and 18
The bolt 20 is inserted through the bolt hole 15a of the upper plate 15, and the nut 21 screwed to the through bolt 20 is turned and tightened to fix the steering column 5 fixed to the column bracket 14 and passing through the cylindrical portion 40 in a predetermined manner. Support in an inclined position. Through bolt 20 and nut 2
As shown in FIG. 1, 1 is provided at a total of four locations before and after each symmetric position.

According to the above embodiment of the present invention, the through bolt 20 penetrates through the upper plate 15, the reinforcing members 17, 18 and the lower plate 16 of the column bracket 14, and supports the steering column 5 at the same time. The local rigidity of the column bracket 14 is improved. Further, the vertical resonance frequency of the steering wheel 10 can be increased, and there is an advantage that vibration of the steering during idling and during running can be reduced.

It should be noted that the present invention is not limited to the above embodiment, and various modifications are possible.

[0019]

According to the present invention, there is provided a steering apparatus comprising: a column bracket supported by the steering support member; By fixing the column mounting member to the column bracket at both the front and rear positions with respect to the support member, the resonance frequency of the steering wheel can be increased, and the effect of reducing steering vibration during idling can be achieved. Play. Further, the column bracket has a reinforcing member, and the column mounting member is fixed to the column bracket by using through bolts at both front and rear portions with respect to the steering support member, and the through bolts connect the column bracket and the reinforcing member. By penetrating, there is an advantage that the rigidity of the joint between the steering column and the column bracket can be improved by utilizing the through bolt, and the reinforcing member can be reduced in size.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a steering column mounting structure according to an embodiment of the present invention.

FIG. 2 is a partially broken side view of the steering column mounting structure according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line BB and CC in FIG. 2;

FIG. 4 is a partially broken side view showing a main part of a conventional steering column mounting structure.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

[Explanation of symbols]

 Reference Signs List 5 steering column 10 steering wheel 13 steering support member 14 column bracket 15 upper plate 16 lower plate 17, 18 reinforcing member 19 column mounting member 20 through bolt 26 angle plate portion 31 contact plate portion 41 mounting flange

Claims (2)

[Claims] 1. A steering system comprising: a column bracket penetrating a lateral steering support member having both ends coupled to a vehicle body and supported by the steering support member; and a column mounting member for supporting a steering column. A steering column mounting structure, wherein the column mounting member is fixed to the column bracket at both front and rear portions. 2. The column bracket has a reinforcing member, and the column mounting member is fixed to the column bracket by using through bolts at both front and rear positions with respect to the steering support member. The steering column mounting structure according to claim 1, wherein a hole extends through the column bracket and the reinforcing member.