Vibration damper for vehicles

US7866452B2 · kind B2 · utility

Assignee

• ZF Sachs AG · DE

Inventors

• Stefan Brehm · Hennef (Sieg), DE
• Manfred Heinisch · Eitorf, DE
• Michael Müller · Hennef (Sieg), DE

Key dates

• Filing date: Jun 4, 2004
• Grant date: Jan 11, 2011
• Expiry date: Jun 4, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/585
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A vibration damper for vehicles comprises a work cylinder in which a piston is guided axially by a piston rod. The piston divides the work cylinder into two work spaces filled with damping fluid. A tension stop is provided between the piston and a piston rod guide, wherein a tension stop element including a flexible part and a reinforcing ring is arranged between a support fastened to the piston rod and the piston rod guide. The reinforcing ring limits the deformation of the flexible part of tension stop when subjected to force during operation so that permissible shearing stresses of the flexible part are not exceeded.