JPH0331019A - Automobile suspension - Google Patents

Abstract

PURPOSE:To lower the roll rigidity with the use of a simple structure by supporting the center part of a crank-like torsion bar used as a compensator, to a vehicle body, and by connecting body end part thereof to wheels with its longitudinal direction being reversed. CONSTITUTION:A suspension comprises a pair of swing axles 2a, 2b whose one end is supported to a differential unit 1 and whose the other end is supported thereto with a pair of wheels 3a, 3b which are coupled at their insides to a vehicle body through the intermediary of a pair of trailing arms 4a, 4b. In this arrangement, the center part 6a of a crank-like torsion bar 6 which is used as a compensator spring, is supported to the vehicle body, and one end 6b thereof is connected to a bracket 13a on one 2a of the swing axles, being directed forward while the other end 6c is connected to a bracket 13b on the other one 2b of the swing axles, being directed rearward.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to an automobile suspension, and more particularly to a suspension compensator.

b. Prior art In order to improve the ride comfort of a vehicle, a compensator may be installed.

The compensator uses a spring, and when the left and right wheels move up and down in the same phase, the spring is deformed, thereby creating a biasing force that restores both axles, and when the left and right wheels move up and down in opposite phases during rolling, The roll rigidity is reduced by preventing the spring from deforming.

Problems to be solved by the C0 invention Compensators of this type have been adopted in several car models, but all of them have complicated equipment, require a large installation space, and are disadvantageous in terms of weight and cost. Ta.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an automobile suspension equipped with a compensator having a simple structure.

d. Means for Solving the Problems In the automobile suspension of the present invention, a crank-shaped torsion bar is used, the central portion of which is held on the vehicle body or the axle, and the respective ends are held in opposite directions in the direction of travel of the vehicle. and each end is connected to a wheel or vehicle body.

e. Effect: In the automobile suspension of the present invention, when an upward input is applied to one wheel during cornering, for example,
This twists the torsion bar, resulting in a downward reaction force on the other wheel.

f. Embodiment FIGS. 1 to 3 show an embodiment of an automobile suspension according to the present invention.

The suspension shown in FIG. 1 is a trailing arm suspension. In this suspension, one end of swing axles 2a, 2b is supported by a differential gear 1. And this swing axle 2a
, 2b is equipped with wheels 3a, 3b at the other end, and the inside of the wheels 3a, 3b is a trailing arm 4a.
+ 4b to the vehicle body 5.

In this suspension, a crank-shaped torsion bar 6 is used as a compensator spring. The center portion 6a of the torsion bar 6 is held on the vehicle body 5 by a bracket 7 via a rubber bush 8, as shown in FIG. Further, one end 6b of this torsion bar 6 is disposed toward the front in the direction of travel of the vehicle, and its tip end forms a ball joint 9. as shown in FIG. Ring 10. It is connected to a bracket 13a of the swing axle 2a via a ball joint linkage 12 constituted by a ball joint II or the like. The other end 6c of the torsion bar 6 is arranged toward the rear in the traveling direction of the vehicle, and its tip is connected to the bracket 13b of the swing axle 2b via the ball joint linkage 12, similar to the tip of the one end 6b. ing.

With this kind of suspension, when cornering,
When an upward input is applied to the axle 3a, one swing axle 2a is thereby moved upward. Then, the torsion bar 6 is twisted, and its reaction force acts on the other swing axle 2b via the ball joint linkage 12, and the wheel 3 is rotated via the swing axle 2b.
b is biased downward.

Therefore, due to this reaction force, the swing axle 2b
This causes the vehicle bodies 5 to move away from each other, increasing the roll rate. As a result, with this suspension, it is possible to reduce roll stiffness.

In addition, in the said Example, the swing axle 2a.

2b and the torsion bar 6, the tip of the torsion bar 6 is connected to the swing axle 2 via a ball joint linkage 12 having two movable parts.
a and 2b, respectively. However, the connection between the swing axles 2a, 2b and the torsion bar 6 is
As shown in FIG. 4, rubber bushings 14. Washer 15. Color 16. The same effect can be obtained even if a rubber butt shrinkage 18 consisting of a tensicon rod or the like is employed.

FIG. 5 shows an embodiment in which the present invention is applied to an axle suspension.

In this suspension, a central portion 6a of a crank-shaped torsion bar 6 is held on an axle (rigid axle) 19 by a bracket 7 via a rubber bush 8, as shown in FIG. As shown in FIG. 3 or 4, it is connected to the vehicle body 5 by a pivot linkage 12 or a rubber butt shrink linkage 18.

Even in this suspension, when an upward input is applied to one wheel 3a, the torsion bar 6 is twisted thereby, and the reaction force acts on the wheel 3b, urging the wheel 3b downward.

Although the above embodiments show examples in which the present invention is applied to a trailing arm type suspension and an axle type suspension, the present invention can also be applied to other types of suspensions, such as a swing axle type, a leading arm type, a wishbone type, and a strut type suspension. It can also be applied to

Effects of the Invention As described above, in the automobile suspension according to the present invention, a crank-shaped torsion bar is used, the central part of which is held on the vehicle body or the axle, and the respective ends are held in opposite directions in the direction of travel of the vehicle. and each end is connected to a wheel or a vehicle body, thereby forming a convencator.

Therefore, a suspension equipped with such a compensator has an extremely simple structure, which facilitates manufacturing and assembly, and also reduces weight.

In addition, in a vehicle that uses a strut type independent suspension on the front side and a ring coil type rigid axle suspension on the rear side, the roll center on the front side is lower than the rear side, so the roll rigidity on the front side is low and the rear side has a It gets expensive.

In this case, when cornering, the rear side starts to slide quickly and shows a tendency to oversteer. If the present invention is applied to the rear suspension and the rear roll stiffness is reduced, the steering characteristics can be improved. It can be adjusted in the direction of understeer, that is, in the direction of stabilization.

[Brief explanation of drawings]

FIG. 1 is a plan view conceptually showing an automobile suspension suspension according to the present invention, FIG. 2 is a cross-sectional view showing how the central part of the torsion bar, which is the main element of the suspension, is attached, and FIG. FIG. 4 is a sectional view showing another manner of attachment of the end of the torsion bar, FIG. 5 is a sectional view of another embodiment of the automobile suspension according to the present invention. FIG. 3 is a conceptual plan view showing an example. 2a, 2b...swing axle, 3a, 3b...
...Wheels, 4a, 4b...Trailing arm, 5...In
, 6... Torsion bar 6a... Center part, 6b, 6c... End part, 7... Bracket, 8... Rubber bush, 9...
Ball joint, 10... Link, 11... Ball joint, 12... Pole joint linkage, 13
a, 13b... Placket, 14... Rubber bushing, 15... Washer, 1
6...Collar, 17...Tension Rondo, 18...Rubber Button Linkage. Figure 1

Claims (2)

[Claims] (1) In an independent suspension, a crank-shaped torsion bar is used, the center part of the torsion bar is held in the vehicle body, one end of the torsion bar is directed forward in the direction of travel of the vehicle, and the tip is directed toward the front in the direction of travel of the vehicle. A suspension for an automobile, characterized in that the torsion bar is connected to a wheel, the other end of the torsion bar is directed rearward in the direction of travel of the vehicle, and the tip of the torsion bar is connected to the other wheel. (2) In an axle-type suspension, a crank-shaped torsion bar is used, the center part of the torsion bar is held on the axle, one end of the torsion bar is directed forward in the direction of travel of the vehicle, and the tip is connected to the vehicle body. A suspension for an automobile, characterized in that the torsion bar is connected to the other end of the torsion bar, the other end of the torsion bar is directed rearward in the traveling direction of the vehicle, and its tip is connected to the vehicle body.