Land vehicles – Wheeled – Running gear
Reexamination Certificate
1999-12-23
2001-02-27
English, Peter C. (Department: 3619)
Land vehicles
Wheeled
Running gear
C280S124116, C280S124128, C280S124134, C280S124152, C280S124179
Reexamination Certificate
active
06193250
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to a vehicle suspension and, in particular, to a suspension system capable of optimally controlling camber angle according to vehicle condition.
(b) Description of the Related Art
A suspension system is designed to provide the best combination of ride quality, directional control, ease of handling, safety, stability, and service life. Particularly, the front suspension system makes provision for turning the front wheels both right and left, as well as for straight-ahead directional control. Also, the front suspension system absorbs most of the braking torque caused by weight transfer during braking.
In modern vehicles equipped either with a MacPherson type or a double-triangle type suspension, the camber angle of the front wheels has an important relationship with the behavior of the vehicle. Generally, in most suspension systems of the prior art, the camber angle is zero or very small for ideal contact between the tire and the ground.
However, if a suspension system is designed to have no camber angle while the vehicle is being driven straightforward, camber angle is generated when the vehicle turns, and it varies as the turning radius varies. If the suspension system is designed to have no camber angle during turning of the vehicle, there exists a camber angle when the vehicle runs in a straightforward direction.
Accordingly, in these prior suspension systems, it is impossible to obtain both straightforward running stability and turning stability with the same front suspension geometry.
SUMMARY OF THE INVENTION
The present invention has been made in an effort to solve the above problems of the prior art.
It is an object of the present invention to provide a camber angle control type suspension system capable of maintaining an ideal contact surface between the tire and the ground regardless of the vehicle's directional condition and uneven road surface conditions.
To achieve the above object, a camber angle control type suspension system includes left and right swing arms, each connected at one end to a respective left and right axle shaft, a trailing arm having opposite ends with downwardly bent elbows, which are pivotably connected to the swing arms, the trailing arm being rotatably connected to the vehicle body by means of rotatable bushings mounted on the trailing arm, shock absorbers interposed between the swing arms and the vehicle body so as to make connection therebetween, springs coiled around the shock absorbers, and a stabilizer bar fixed at opposite ends to the left and right swing arms and connected to the vehicle body by means of rotatable bushings at a center portion thereof.
REFERENCES:
patent: 2831545 (1958-04-01), Christiano
patent: 3586346 (1971-06-01), Sautter
patent: 3610655 (1971-10-01), Barenyi et al.
patent: 3729210 (1973-04-01), Cunningham, Jr.
patent: 4491341 (1985-01-01), Maebayashi
Christie Parker & Hale LLP
English Peter C.
Hyundai Motor Company
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