JPS5937365Y2 - Vehicle wheel attitude adjustment device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an eleventh vehicle wheel attitude adjustment device.

As a wheel suspension system for automobiles, etc., a torsion bar is inserted and supported through a cross member on the vehicle body side, an outer arm is connected to one side end of the torsion bar, and one end of the cross member is rotatable up and down. A so-called semi-trailing arm system is generally used in which a connected inner arm supports the wheel so that it can swing up and down (for example, Japanese Patent Publication No. 46-34326, Japanese Patent Publication No. 49-1983).
(See Publication No. 44127, etc.).

In this type of suspension, it is extremely difficult to adjust toe-in and toe-out after the wheels are assembled.

This invention has a very simple configuration.

The present invention provides a device that can extremely easily adjust toe-out, thereby preventing subtle variations in the wheel posture of each vehicle.

The present invention will be explained below with reference to the accompanying drawings.

Fig. 11 is a plan view showing a wheel suspension system to which the present invention is applied; in the diagram, 1 is a hollow cylindrical cross member fixed to the vehicle body, 2 is a torsion bar inserted through the cross member H; Although not shown, the torsion bar 2 has an end on the vehicle body center side, which is supported by a vehicle body fixing member such as a cross member 1 so as to be fixed in the rotational direction by means such as serration fitting. The base end portion of the outer arm 3 is connected to the end.

Reference numeral 4 denotes an inner arm whose base end is pivoted to a bracket 5 fixed to the cross member 1, and a wheel 6 is supported by the outer arm 3 and inner arm 4 so as to be able to swing up and down.

In this type of suspension, a line A-- connecting the base end support point A of the outer arm 3 and the base end support point B of the inner arm 4
It swings up and down about the center Bf, and the swing center A- with respect to the rotation center of the outer arm 3, that is, the center line of the torsion bar 2.
Since B is eccentric, the outer arm 3 has a structure that ensures vertical rigidity and low lateral bending and torsional rigidity, and the base end shaft N portion of the inner arm 4 is also elastic to allow some angular displacement. Usually, the structure is such that they are connected through a material.

The vertical movement of the wheel 6 is elastically supported by the torsional reaction force of the torsion bar 2.

In the semi-trailing arm type suspension as described above, one aspect of the present invention is that the support point by the cross member 1 at the side end of the torsion bar 2 is configured to be adjustable in displacement in the longitudinal direction of the vehicle, and This is characterized in that a lip portion that covers the side end portion of the cross member 1 is formed at the end portion of the bushing that supports the end portion.

That is, as shown in FIG. 2, on the outer circumferential surface of the outer side of the torsion bar 2, a cylindrical bushing 7 with a rubber bullet material 7c integrally mounted between the outer cylinder 7a and the cylinder 7b rotates. It is fitted so that it can move.

The outer diameter of the cylindrical bushing 7 is 11 mm, which is smaller than the inner diameter of the cross member 1, and as shown in FIG. It has a supported configuration, and when the adjustment bolt 8 on the front F side is loosened and the adjustment bolt 9 on the rear R side is screwed in, the center 0 of the torsion bar 2 moves by δ in the front F direction, as shown at 0'. The outer arm 3 is supported by the cross member 1 in a displaced state, and the front F of the proximal support point A of the outer arm 3 is
Due to the displacement in the direction, the inner arm 4 rotates forward about its support point B, and the front of the wheel 6 becomes slightly inwardly narrowed, thereby enabling toe-in adjustment. It has become.

Conversely, when the bolt 9 is loosened and the bolt 8 is screwed in, the outer arm support point Agtl is displaced toward the R side, and toe-out adjustment can be performed.

As described above, the side end of the bushing 7, which is interposed between the torsion bar 2 and the cross member 1 and supports the outer end of the torsion bar 2 so as to be able to adjust the displacement in the front and back direction, is connected to the side end of the cross member 1. A lip portion 7d formed by expanding the end portion of the elastic material 7C into an umbrella shape is integrally provided, protruding from the cross member, and the lip portion 7d covers the side end portion of the cross member. There is.

The present invention (JAs described above, the bushing made of bullet material that supports the side i side of the torsion bar in the cross member is configured so that its outer diameter is smaller than the inner diameter of the cross member, and the bushing is cross-shaped. It has a structure that allows movement and adjustment in the rear direction of the vehicle body within the member, and this makes it possible to adjust the toe-in and toe-out of the wheels extremely easily and accurately. Problems such as sewage entering into the cross member through the adjustment gap and causing rust can be completely prevented by the lip part formed integrally with the bushing side end t covering the cross member side end. This can be prevented and has an extremely large practical effect.

In the above-mentioned embodiment, a bolt is used as a means for adjusting the movement of the bushing supporting the side end side of the cross member, but the adjusting means may be any other structure within the scope of the object of the present invention. ff1f can be adopted.

[Brief explanation of drawings]

Fig. 1 is an explanatory plan view of a wheel suspension system to which the present invention is applied, Fig. 2 is a sectional view of a portion corresponding to section X in Fig. 1 showing an implementation row of the present invention, and Fig. It is a sectional view taken along YY line in the figure. 1... Cross member 2... Torsion bar 3... Outer arm, 4...
Inner arm, 5...Bracket, 6...
...Wheels, 7...butshu. 7d...Lip part, 8, 9...Adjustment bolt.

Claims (1)

[Scope of Claim for Utility Model Registration] An outer arm is connected to the side end of a torsion bar attached to a cross member of a vehicle body, and an inner arm pivoted to the cross member and the above-mentioned outer arm l trowel wheel are supported so as to be able to swing up and down. In this device, an outer diameter of a bush made of an elastic material that supports the lateral ends of the torsion bar within the cross member is smaller than an inner diameter of the cross member. The bushing is supported within the cross member so that it can be moved and adjusted in the longitudinal direction of the vehicle.
A vehicle wheel attitude adjustment device characterized in that a lip portion covering a side end of a cross member is integrally formed at an outer side end of the bush.