Torsion spring bar system for a wheel suspension of a motor vehicle
AssigneeAudi AG
InventorJoachim Schmitt
Life of this patent
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Abstract
A torsion spring bar system for a wheel suspension of a motor vehicle includes on each vehicle side a torsion spring bar which is oriented transversely to the vehicle longitudinal center and acts on each wheel guide element of the wheel suspension with variable pretension via an output lever positioned outwards with respect to the vehicle longitudinal center. The torsion spring bar is acted upon by an actuator with a torsional moment. The torsion spring bars on both vehicle sides are coupled to one another at their axially adjacent ends in the vehicle longitudinal center via at least one additional torsion spring element.
Claims8
A torsion spring bar system for a wheel suspension of a motor vehicle, comprising:
- torsion spring bars oriented transversely to a vehicle longitudinal center on both vehicles sides, respectively, each of said torsion spring bars acting on a wheel guide element of the wheel suspension with variable pretension via an output lever positioned outwards with respect to the vehicle longitudinal center;
- an actuator configured to act on the torsion spring bar with a torsional moment;
- at least one torsion spring element configured to couple the torsion spring bars to one another at axially adjacent ends in the vehicle longitudinal center;
- and
- a flexible drive having an output gear in hollow shaft design, each of said torsion spring bars including a solid bar and a tubular bar connected to the solid bar, said actuator including an electric motor and a gearing with a high gear ratio to reduce stress on the flexible drive, said flexible drive being a chain or a toothed belt, and said electric motor being arranged in axis-parallel relation to the torsion spring bar and in driving relation to the tubular bar via the flexible drive with the output gear.
Dependencies are inferred from the claim text.