Vehicle wheel suspension comprises spring and linear actuator formed by contraction element having pressurized chamber surrounded by casing and force return device transforming pressure forces into traction forces

摘要

The suspension for a wheel on the vehicle bodywork has a spring providing support for the pressure forces acting between the wheel and the bodywork and a linear actuator for adjusting the kinematic between the wheel and the bodywork. The spring and actuator are formed by a pipe shaped contraction element (15) which has a pressurized hydraulic or pneumatic chamber (17) surrounded by a casing (16). The casing is radially widened by an increase of pressure in the chamber. A force return device (5) transforms the pressure forces being produced between the wheel and the bodywork into traction forces. The contraction element is supported on the wheel and the bodywork by the force return device.