Zf Friedrichshafen Ag

Holger Beyer

Steffen Heyn

Bernd Zeissner

Heinz-Joachim Gilsdorf

Thomas Thein

Wolfgang Breun

Anton Krawczyk

Frank Gundermann

Klaus Sauer

Ludwig Gampl

Andreas Foerster

Uwe Boecker

Herbert Bies

Bernd Christau

Heiko Erfurth

Disclosed is a vibration damper comprising a cylinder in which a piston rod is guided in an axially movable manner. A first piston is mounted stationarily on the piston rod while a second piston that is equipped with at least one valve disk biased by a spring assembly is mounted on the piston rod so as to be axially movable counter to a force of at least one support spring. The spring assembly is provided with at least one spring plate on which the spring assembly rests. The second piston is retained by a fixing sleeve which supports the at least one spring plate. The structural unit encompassing the fixing sleeve and the at least one spring plate is fitted with an axially effective separating joint for a locking connection inside the structural unit. The entire structural unit can be axially displaced towards the at least one support spring.

Vibration damper

The invention relates to a vibration damper, comprising a cylinder () that is filled with damping medium, in which a piston rod () is guided in an axially movable manner by a piston rod guide (), the lateral surface of the piston rod guide lying against an inner wall of the cylinder () and the piston rod guide being sealed in the direction of a working area at the piston rod end, the area of contact between the lateral surface () and the cylinder () relative to the working area () at the piston rod end having on the other side of the sealing area () at least one outlet () in the direction of an outer end face () of the vibration damper.

Piston rod guide, in particular for a single-tube vibration damper

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Pfarrweisach, Germany

Holger Beyer