Land vehicles – Wheeled – Running gear
Patent
1997-01-17
1998-01-27
Ellis, Christopher P.
Land vehicles
Wheeled
Running gear
280689, 280721, B60G 902
Patent
active
057115443
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention pertains to an axle suspension for rigid axles in vehicles, especially utility vehicles, in which at least one longitudinal control arm, which extends in the longitudinal direction of the vehicle and connects the vehicle axle vertically movably to the vehicle body, is arranged on each side of the vehicle approximately at the same level, and, at a different level and a triangle pull rod articulated to the vehicle axle and to the vehicle body centrally and laterally offset, as well as a stabilizer bar consisting of a torsion spring bar counteracting lateral tilting movements by torsional stresses are provided.
BACKGROUND OF THE INVENTION
Axle suspensions have been known, which comprise an axle guiding through longitudinal control arms, which are arranged on both sides of the vehicle and are articulated to the vehicle axle, on the one hand, and to the vehicle body, on the other hand, in conjunction with a triangle pull rod, which is anchored in the center of the vehicle with a central joint, mostly on the vehicle axle, on the one hand, and is articulated on the vehicle body with the ends of its two struts, on the other hand, and a stabilizer bar, whose top view is usually U-shaped, and whose bent leg ends are fastened to the vehicle superstructures in the manner of a limited universal joint at laterally spaced locations from one another, and whose web part is mounted movably around a transverse axis at right angles to the longitudinal direction of the vehicle in at least two stabilizer bearings on the vehicle axle.
SUMMARY AND OBJECTS OF THE INVENTION
The basic object of the present invention is to provide a simpler, space- and cost-saving design of such an axle suspension.
According to the invention, an axle suspension for rigid axles in vehicles, especially utility vehicles, in which at least one longitudinal control arm is arranged on each side of the vehicle approximately at the same level. The control arms extend in the longitudinal direction of the vehicle and connect the vehicle axle vertically movably to the vehicle body. At a different level, a triangle pull rod is articulated to the vehicle axle and to the vehicle body centrally and laterally offset. A stabilizer bar including a torsion spring bar counteracting lateral tilting movements by torsional stresses is also provided. The stabilizer bar is arranged directly between the longitudinal control arms. The ends of the stabilizer bar are connected to the longitudinal control arms in the manner of a universal joint, but rotating in unison.
These design features lead to an integration of the elements for axle guiding and of the elements for the transverse stabilization of the vehicle body in relation to the vehicle axle. The stabilizer bar is arranged directly between the longitudinal control arms for the axle guiding and is connected to these longitudinal control arms by prior-art, low-friction bearing elements rotating in unison, but cardanically movably at right angles to the longitudinal direction of the vehicle. One special advantage of the design according to the present invention is the possibility of replacing already installed axle-guiding elements with an axle suspension designed according to the present invention, using the bearing elements present on the vehicle body and on the vehicle axle.
A separate space is no longer required for the mounting of a stabilizer bar. Bearing elements for the stabilizer bar on the vehicle axle and also on the vehicle body are eliminated. Along with this, the axle suspension according to the present invention also saves costs compared with prior-art designs, because it has fewer individual parts and requires a smaller mount of assembly. However, there also are functional advantages. The stabilizer bar may be used as a straight bar, so that its manufacture is also cheaper. In a preferred embodiment, the ends of the stabilizer bar, designed as a torsion bar, are connected to the longitudinal control arms at least at two points, but movably in the longitudinal
REFERENCES:
patent: 3157242 (1964-11-01), Kozicki
patent: 3386752 (1968-06-01), Freers et al.
patent: 3486575 (1969-12-01), Allison
patent: 4039205 (1977-08-01), Castanier
patent: 4632422 (1986-12-01), Csordas et al.
patent: 4784406 (1988-11-01), Stinson
Ellis Christopher P.
Lemforder Metallwaren AG
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