PNEUMATIC SPRING-VIBRATION DAMPER UNIT

• Main Authors: BRUNNEKE HANS GERD, LOSCHE CHRISTIAN
• Format: Patent
• Language: English
• Published: 04.04.2007
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE SUSPENSION ARRANGEMENTS; VEHICLES IN GENERAL; WEAPONS

A pneumatic spring-vibration damper unit is provided for absorbing shocks on wheels and chassis parts of motor vehicles. A variable air chamber is delimited by a rolling bellows which is disposed between a first subassembly that is fixed to the vehicle body and is provided with a vibration damper system and a second subassembly that is fixed to the vehicle chassis and is movable therewith. A piston rod connects the first subassembly located at the vehicle body end and the second subassembly located at the chassis end and whose free end located at the vehicle body end is accommodated inside a cylinder tube of the vibration damper system so as to be longitudinally movable by means of a piston. The piston rod (8) is guided within the cylinder tube (6) of the vibration damper system (2) so as to be longitudinally movable with the aid of a drag bearing arrangement (13). This allows the longitudinal axis of the piston rod to be angularly deflected relative to the central longitudinal axis (18) of the cylinder tube (6) while a joining element (10) which is fastened to the piston rod (8) and the piston (9) by a respective ball-and-socket joint unit (11, 12) is positioned between the piston rod (8) and the piston (9).