JP3321829B2 - Suspension member structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension member structure, and more particularly to a suspension member structure having a collar into which a vehicle body mounting bolt is inserted into a vehicle body mounting portion.

[0002]

2. Description of the Related Art One suspension member structure having a collar into which a vehicle body mounting bolt is inserted into a vehicle body mounting portion is disclosed in Japanese Utility Model Laid-Open Publication No. 62-127067.

As shown in FIG. 5, in this suspension member structure, a collar 74 is provided in a vehicle body mounting portion 72 of a suspension member 70, and a bolt 76 penetrating the collar 74 is attached to a side member 78. It is screwed into the screw portion 80A of the reinforcing member 80 provided therein.

The upper end 74A of the collar 74 contacts the lower surface of the upper wall 72A of the vehicle body mounting portion 72, and the lower edge 74B contacts the upper surface of the lower wall 72B of the vehicle mounting portion 72. And supports the axial force of the bolt 76.

On the other hand, in a front engine / front drive vehicle, a so-called FF vehicle, as shown in FIG.
A lower arm 90, a stabilizer bar 92, a drive shaft 94, a steering rod (not shown), and the like are arranged. In order to prevent buffering of these members, the vehicle body mounting portion 84 of the suspension member 82 has a thin and protruding structure. Have been.

Further, as shown in FIG. 7, as a structure for further reducing the tip end of the vehicle body attachment portion 84 of the suspension member 82 to prevent the suspension member 82 from being buffered with other members, as shown in FIG. An opening 86 is formed by vertical cutting from above (in the direction of the arrow P in FIG. 7), and a cylindrical collar 90 in which a disk-shaped plate 88 is welded is welded to the opening 86. It is conceivable to insert a vehicle body mounting bolt.

[0007]

However, in this suspension member structure, as shown in FIG. 8, the welding surface 94 between the side wall portion 84A of the vehicle body mounting portion 84 and the outer peripheral portion 90A of the collar 90 is narrow. However, there is a problem that the rigidity of the vehicle body mounting portion 84 is reduced because the coupling rigidity of this portion cannot be sufficiently secured.

An object of the present invention is to provide a suspension member structure capable of improving the rigidity of a vehicle body mounting portion in consideration of the above fact.

[0009]

According to a first aspect of the present invention, there is provided a suspension member structure in which a collar for inserting a vehicle body mounting bolt is provided in a vehicle body mounting portion having a substantially rectangular cross-sectional shape having a curved portion. A suspension member structure, wherein the collar has the substantially rectangular cross-sectional shape.
With a closed cross-sectional structure of rectangular cross- section that contacts the part ,
A relief portion is provided at a position corresponding to the curved portion of the vehicle body attachment portion of the collar, and an outer peripheral portion of the collar is connected to an inner surface of a side wall portion of the vehicle body attachment portion.

[0010]

According to the suspension member structure of the first aspect of the present invention, the relief portion is provided at a position corresponding to the curved portion of the vehicle body mounting portion of the collar, so that the collar and the curved portion of the vehicle body mounting portion are buffered. The outer peripheral portion of the collar can be extended to a position where the outer peripheral portion of the collar contacts the side wall portion of the vehicle body mounting portion of the suspension member. In addition, the collar has a substantially rectangular cross section
Because of the closed cross-sectional structure having a rectangular cross- section that comes into contact with the shaped vehicle body mounting portion, the outer peripheral portion of the collar can be brought into contact with the side wall portion of the vehicle body mounting portion over a wide range and can be joined.

Therefore, the rigidity of the vehicle body mounting portion can be improved by connecting the outer peripheral portion of the collar to the side wall portion of the vehicle body mounting portion of the suspension member in a wide range.

Further, since the outer peripheral portion of the collar can be extended to a position where it comes into contact with the side wall portion of the vehicle body mounting portion of the suspension member, the ability to support the axial force of the vehicle body mounting bolt is improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a suspension member structure according to the present invention will be described with reference to FIGS.

In the drawings, the arrow FR indicates the forward direction of the vehicle body, the arrow IN indicates the inward direction of the vehicle width, and the arrow UP indicates the upward direction of the vehicle body.

As shown in FIG. 3, the vehicle body mounting portion 12 of the suspension member 10 is
From the main body portion 14 of the vehicle.

As shown in FIG. 1, the vehicle body mounting portion 12 of the suspension member 10 is
Member upper panel 1 that constitutes the upper part of the vehicle
6 and a suspension member lower panel 18 constituting a lower portion of the suspension member 10.

As shown in FIG. 2, the cross-sectional shape of the suspension member upper panel 16 as viewed in the vehicle width direction is a U-shape with the opening directed downward. That is, the front side portion of the upper wall portion 16A in the vehicle longitudinal direction is bent downward toward the vehicle body to form a front wall portion 16B, and a curved portion 16C is formed at the boundary between the upper wall portion 16A and the front wall portion 16B. Exists. The lower end of the front side wall 16B is bent toward the front of the vehicle body to form a flange 16D.

The rear portion of the upper wall portion 16A in the front-rear direction of the vehicle body is bent downward toward the vehicle body to form a rear wall portion 16E. A curved portion is formed at the boundary between the upper wall portion 16A and the rear wall portion 16E. 16F is present. The lower end of the rear wall portion 16E extends downward from the vehicle body and forms a flange 16G.

On the other hand, the suspension member lower panel 1
8 has an L-shaped cross section, and a flange 16D of the suspension member upper panel 16 is welded to the upper surface of the front end 18B of the base 18A in the vehicle longitudinal direction. The rear portion of the base 18A in the front-rear direction of the vehicle body is bent downward, and a flange 18C is formed.
The flange 18C is welded to the flange 16G of the suspension member upper panel 16.

Accordingly, the vehicle body mounting portion 12 of the suspension member 10 has a closed cross-sectional structure having a substantially rectangular cross-sectional shape having an opening outside in the vehicle width direction.

As shown in FIG. 1, a through hole 21 for inserting a vehicle body mounting bolt 19 is formed near the outer end of the upper wall portion 16A of the suspension member upper panel 16 in the vehicle width direction. A flange 16H is formed on the outer end of the upper wall 16A of the suspension member upper panel 16 in the vehicle width direction toward the outside in the vehicle width direction.
Also, the base 18 of the suspension member lower panel 18
A through hole 23 for inserting the vehicle body mounting bolt 19 is coaxially formed with the through hole 21 near the outer end in the vehicle width direction of A. A flange 18 </ b> D is formed outwardly in the vehicle width direction at an outer end in the vehicle width direction of the base 18 </ b> A of the suspension member lower panel 18.
8D faces the flange 16H of the suspension member upper panel 16.

Body mounting portion 1 of suspension member 10
The collar 20 is inserted into the opening 2. The collar 20 has a closed cross-sectional structure having a square cross-section, and the upper end edge portion 20B of the vehicle width direction outer wall portion 20A abuts and is welded to the lower surface of the flange 16H of the suspension member upper panel 16. In addition, the inner wall portion 20 in the vehicle width direction
The upper edge 20D of C is welded to the lower surface of the upper wall 16A of the suspension member upper panel 16 in contact therewith.

The lower edge 20E of the outer wall portion 20A of the collar 20 in the vehicle width direction is formed on the suspension member lower panel 18A.
And is welded to the upper surface of the flange 18D. Further, an upper end edge portion 20F of the inner wall portion 20C in the vehicle width direction abuts on and is welded to the upper side surface of the base portion 18A of the suspension member lower panel 18.

As shown in FIG. 2, a relief portion 22 is formed at the upper end of the rear wall portion 20G of the body of the collar 20 to prevent the suspension member upper panel 16 from bending with the curved portion 16F. Further, the relief portion 22 allows the rear wall portion 20G of the body of the collar 20 to be in contact with the rear wall portion 16E of the suspension member upper panel 16, and the rear wall portion 20G of the body of the collar 20 is connected to the suspension member upper panel 16G. Rear wall 16E
Is welded to.

A curved portion 1 of the suspension member upper panel 16 is provided at an upper end portion of the vehicle body front side wall portion 20H of the collar 20.
A relief portion 24 is formed to avoid buffering with 6C. Also, the relief portion 24 allows the vehicle body front side wall portion 20H of the collar 20 to be in contact with the front side wall portion 16B of the suspension member upper panel 16, and the vehicle body front side wall portion 20H of the collar 20 is connected to the suspension member upper panel 16H. Is welded to the front side wall portion 16B.

Next, the operation of this embodiment will be described. According to the suspension member structure of the present embodiment, the relief portion 22 is formed at the upper end of the rear body side wall portion 20G of the collar 20, and the relief portion 24 is formed at the upper end portion of the vehicle body front side wall portion 20H of the collar 20. Are formed. Therefore, the collar 20 is connected to the curved portion 1 of the suspension member upper panel 16.
There is no buffer between the 6F and the curved portion 16C, and the color 20
Of the vehicle body rear side wall portion 20G and the vehicle body front side wall portion 20H can be extended to a position where they contact the rear side wall portion 16E and the front side wall portion 16B of the suspension member upper panel 16. Further, since the collar 20 has a closed cross-sectional structure having a square cross section, the rear wall portion 20G and the front wall portion 20H of the collar 20 are connected to the rear wall portion 16E and the front wall portion 16B of the suspension member upper panel 16. And can be joined in a wide range.

Therefore, the rigidity of the vehicle body mounting portion 12 can be improved by connecting the outer peripheral portion of the collar 20 to the side wall portion of the vehicle body mounting portion 12 of the suspension member 10 in a wide range.

Further, since the outer peripheral portion of the collar 20 can be extended to a position where it comes into contact with the side wall portion of the vehicle body mounting portion 12 of the suspension member 10, the ability to support the axial force of the vehicle body mounting bolt 19 is improved. Further, there is no need to perform the vertical cutting of the vehicle body mounting portion 84 as in the conventional structure of FIG.

As shown in FIG. 4, the collar 20 is formed by continuously cutting a strip-shaped material 40 having a coil shape, and a plate piece 42 of a predetermined length provided with collar joints 42A and 42B at both ends. The plate piece 42 is manufactured by bending the plate piece 42 along a bending line indicated by an imaginary line in FIG. Thus, it is possible to manufacture the collar very inexpensively as compared with the case where the collar is manufactured by cutting the pipe. In addition, it is also possible to eliminate the collar joints 42A and 42B and to connect both ends of the plate piece 42 by welding. The cross-sectional shape of the collar is not limited to a square, but may be another rectangular shape such as a hexagon. Is also good.

The flange 16H of the upper wall 16A of the suspension member upper panel 16 and the flange 18D of the base 18A of the suspension member lower panel 18
Can be formed by bending and press-working the suspension member upper panel 16 and the suspension member lower panel 18 in advance without expansion, and the flanges 16H make the plate 88 like the conventional structure of FIG. There is no need to provide, and the collar can be manufactured very inexpensively.

[0031]

According to the suspension member structure of the present invention, a relief portion is provided at a position corresponding to a curved portion of a vehicle body mounting portion of a collar, and a closed cross-sectional structure having a rectangular cross-sectional shape abutting the vehicle body mounting portion having a substantially rectangular cross-sectional shape. Since the outer periphery of the collar is joined to the inner surface of the side wall of the vehicle body mounting portion of the suspension member, the rigidity of the vehicle body mounting portion can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a suspension member structure according to an embodiment of the present invention, as viewed obliquely from the front outside of a vehicle body.

FIG. 2 is a side view showing a suspension member structure according to one embodiment of the present invention.

FIG. 3 is a perspective view showing a suspension member to which the suspension member structure of one embodiment of the present invention is applied.

FIG. 4 is a diagram illustrating a method of manufacturing a collar applied to the suspension member structure according to one embodiment of the present invention.

FIG. 5 is a side sectional view showing a conventional suspension member structure.

FIG. 6 is a perspective view showing a suspension member to which a conventional suspension member structure is applied.

FIG. 7 is a perspective view showing a suspension member to which another conventional suspension member structure is applied.

FIG. 8 is a sectional view taken along line 8-8 in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Suspension member 12 Body attachment part 14 Body part 16 Suspension member upper panel 16A Upper wall part 16B Front wall part 16C Curved part 16E Rear wall part 16F Curved part 18 Suspension member lower panel 18A Base 19 Body attaching bolt 20 Collar 20A Vehicle width direction Outer wall portion 20B Upper edge portion 20C Inner wall portion in the vehicle width direction 20D Upper edge portion 20E Lower edge portion 20F Upper edge portion 20G Vehicle rear wall portion 20H Vehicle front wall portion 22 Relief portion 24 Relief portion

Claims (1)

(57) [Claims] 1. A suspension member structure in which a collar for inserting a vehicle body mounting bolt is provided in a vehicle body mounting portion having a substantially rectangular cross-sectional shape having a curved portion, wherein the collar has the substantially rectangular cross-sectional shape. A cross-sectional rectangular cross-sectional structure that abuts the vehicle body mounting portion, and a relief portion is provided at a position corresponding to a curved portion of the vehicle body mounting portion of the collar, and an outer peripheral portion of the collar is attached to the vehicle body. A suspension member structure, wherein the suspension member structure is coupled to an inner side surface of a side wall portion of the mounting portion.