JPH0632245A - Suspension alignment adjustment structure - Google Patents

Abstract

PURPOSE:To provide a suspension alignment adjustment structure which allows a camber to be efficiently adjusted without changing a positional relationship between a carrier and a suspension arm at all. CONSTITUTION:A bearing case 13 which supports an axle shaft 11 to be rotatable around an axial line L1 is adapted to be assembled on a carrier 22 connected to a suspension arm via a bracket 21. The bracket 21 is adapted to be assembled on the carrier 22 for the rotational movement position to be adjustable up and down around a wheel center 0 as a center.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension of a vehicle such as an automobile, and more particularly to a structure for adjusting alignment such as a camber of the suspension, and a suspension alignment adjusting structure.

[0002]

2. Description of the Related Art A suspension alignment adjusting structure is disclosed, for example, in Japanese Patent Laid-Open No. 63-61616. The adjusting structure disclosed in the publication is a McPherson strut suspension in which the carrier is connected and fixed to the lower end of the shock absorber by a pair of bolts. By rotating this eccentric sleeve, the mounting angle of the carrier with respect to the shock absorber can be adjusted, and the camber can be adjusted.

[0003]

In the above-mentioned conventional alignment adjusting structure, the camber is adjusted by adjusting the mounting angle of the carrier with respect to the shock absorber, so that the carrier and the body of the suspension arm connected to the carrier are adjusted. There may be a change in each position with respect to the brake hose attached to the carrier and the gap relationship between the body and the suspension arm and the body may be adversely affected. Further, since the camber is adjusted by adjusting the connection portion between the carrier and the shock absorber, that is, the position away from the wheel center, even if the camber is slightly adjusted, the carrier needs to be largely adjusted with respect to the shock absorber. Therefore, the work efficiency is low, and the movement amount of the carrier is large, which promotes an adverse effect on the above-mentioned clearance relationship. The present invention has been made to address the above problems, and an alignment adjustment structure for a suspension that can adjust the camber efficiently without changing the positional relationship between the carrier and the suspension arm at all. Is intended to provide.

[0004]

In order to achieve the above-mentioned object, in the present invention, a bearing case for rotatably supporting an axle shaft around an axis line is mounted on a carrier connected to a suspension arm via a bracket. Also, the bracket is attached to the carrier so that the rotational position can be adjusted in the vertical direction around the wheel center.

[0005]

In the suspension alignment adjusting structure according to the present invention, the rotation position of the bracket with respect to the carrier is adjusted so that the bearing case and the axle shaft assembled to the bracket are vertically moved around the wheel center. It can be rotated in any direction and the camber can be adjusted. As described above, in the present invention, since the camber can be adjusted without adjusting the position of the carrier, the positional relationship between the carrier and the suspension arm does not change at all,
The positions of the carrier and the suspension arm with respect to the body also do not change, and there is no change in the clearance relationship between the brake hose and the body assembled to the carrier or the clearance relationship between the suspension arm and the body. Further, since the camber is adjusted by rotating the bracket in the vertical direction about the wheel center, the adjustment amount of the bracket with respect to the carrier becomes the adjustment amount of the camber as it is, and the work efficiency is extremely good.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an alignment adjusting structure of a suspension according to the present invention applied to a MacPherson strut suspension. In this adjusting structure, an axle shaft 11 is rotatably supported by a bearing case 13 via a bearing 12 around an axis L1. Has been done. A brake drum 14 and a hub bolt 15 are attached to the axle shaft 11, and wheels (not shown) are attached to the hub bolt 15.

As shown in FIG. 2, the bearing case 13 has a flange portion 13 having a bolt insertion hole (round hole).
At a, four bolts 16 and nuts 17 (two of which are not shown) are fixed to the bracket 21 via the brake backing plate 18. Bracket 21
As shown in FIGS. 1 to 5, the wheel center O
Arc-shaped elongated holes 21a centering on (intersection point of the wheel center line L2 and the axis L1 of the axle shaft 11) are provided at the top, bottom, front and rear, respectively, and bolt insertions provided in each arc-shaped elongated hole 21a and the carrier 22 are inserted. By the upper and lower two bolts 23 and nuts 24 inserted in the holes (round holes) 22a,
It is assembled so that its rotational position can be adjusted in the vertical direction about the wheel center O by an angle θ. A cap 21A is press-fitted and fixed in the mounting hole 21b of the bracket 21, and the cap 21A restricts the axial movement of the bearing 12 and prevents water and the like from entering the bearing case 13. .

The carrier 22 includes a shock absorber 25.
Has a pair of upper and lower bolt insertion holes 22a and a pair of upper and lower circular arc surfaces 22b centered on the wheel center O. The bracket 21 rotates along the circular arc surfaces 22b. It is supposed to do. Further, below the carrier 22, connecting portions 22c and 22d for connecting to a suspension arm (not shown) are provided, and by connecting the shock absorber 25 and the suspension arm to predetermined positions on the vehicle body, the body of the axle shaft 11 is Are positioned to secure a predetermined wheel alignment.

In the alignment adjusting structure of this embodiment constructed as described above, the bolts 23 and the nuts 24 are loosened to adjust the rotational position of the bracket 21 with respect to the carrier 22, so that the bracket 21 is assembled to the bracket 21. The bearing case 13, the axle shaft 11 and the like thus provided can be rotated in the vertical direction around the wheel center O, and the camber can be adjusted. As described above, in the present embodiment, the camber can be adjusted without adjusting the position of the carrier 22,
The positional relationship between the carrier 22 and the suspension arm does not change at all, and the respective positions of the carrier 22 and the suspension arm with respect to the body also do not change, and the clearance relationship between the brake hose (not shown) assembled to the carrier 22 and the body and There is no change in the clearance relationship between the suspension arm and the body. Further, the camber is adjusted by rotating the bracket 21 in the vertical direction about the wheel center O, so that the carrier 2 of the bracket 21 is adjusted.
The adjustment amount for 2 becomes the adjustment amount of the camber as it is, and the work efficiency is extremely good. In addition, since no special parts such as cams or processing techniques are used for the fastening portions of the bolts and nuts, it is advantageous in terms of cost.

Although the present invention is applied to the MacPherson strut suspension in the above-described embodiments, the present invention can be applied to other various types of suspensions as well.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a suspension alignment adjusting structure according to the present invention.

FIG. 2 is a partial plan view seen from the direction of arrow 2 in FIG.

FIG. 3 is a partially enlarged cross-sectional view showing a relationship between a bracket and a connecting portion of a carrier.

FIG. 4 is a partially enlarged front view showing a relationship between a bracket and a carrier connecting portion.

FIG. 5 is an exploded perspective view of a carrier and a bracket fixed to a shock absorber.

[Explanation of symbols]

11 ... Axle shaft, 13 ... Bearing case, 2
1 ... Bracket, 21a ... Arc-shaped long hole, 22 ... Carrier, 23 ... Bolt, 24 ... Nut, L1 ... Axis line, L2 ...
Wheel center line, O ... Wheel center.

Claims (1)

[Claims] 1. A bearing case for rotatably supporting an axle shaft around an axis is mounted on a carrier connected to a suspension arm via a bracket, and the bracket is mounted on the carrier about a wheel center. An alignment adjustment structure for the suspension that can be assembled so that its rotational position can be adjusted in the vertical direction.