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AssigneeVAW Aluminium AG
InventorsFranz Steimmel, Walther Hasenpatt, Kai-Uwe Jentsch, Jorg Ebert, Dieter Bungarten, Olaf Elsner, Herbert Linden, Michael Hellenkamp, Gerhardt Sollner, Karl-Heinz von Zengen, Peter Harbig, Joachim Lowen
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The invention relates to an integral motor vehicle rear axle of the twist-beam axle type, which comprises an opposed pair of longitudinal control arms (2) of a high flexural strength and torsional stiffness for carrying a wheel carrier for a wheel, and a transverse strut (3) which is resistant to bending but resilient relative to torsional stress and which comprises a profiled cross-section changing the position of the shear center. The transverse strut (3) consists of an extruded aluminum profile with an extrusion structure extending in the longitudinal direction of the transverse strut. A method of producing a motor vehicle rear axle of the twist-beam axle type using transverse struts and longitudinal control arms consists in joining the longitudinal control arms (2) with a transverse carrier (3) which, at its end, comprises a bore, opening or bonding surface extending transversely to the longitudinal axis, and in connecting said longitudinal control arms by hydro-forming in a form-fitting and force-locking way.
A motor vehicle rear axle of the twist beam axle type having a unitary control arm assembly comprising an opposed pair of longitudinal control arms (2) of a high flexural strength and torsional stiffness, each for supporting a wheel carrier plate for a wheel, and an elongate transverse strut (3) which extends between said opposed pair of control arms and has opposed ends, said strut being resistant to bending but resilient relative to torsional stress to twist and thereby vary the location of the shear center thereof, and having a profiled hollow cross-section, each of the opposed ends of said strut being united with a said longitudinal control arm, characterized in that the transverse strut (3) consists of an aluminum extrusion having an extrusion structure which transitions and curves into opposed longitudinal ends extending in the longitudinal direction, parallel to the longitudinal control arms, and become integral with said longitudinal control arms.
Dependencies are inferred from the claim text.