Vibration damper

US5236186A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Uwe Weltin · Rimbach, DE
• Hermann Schilling · Weinheim, DE

Key dates

• Filing date: Nov 23, 1992
• Grant date: Aug 17, 1993
• Expiry date: Nov 23, 2012

Classification

• Technology area (CPC G): Physics
• CPC primary: G10K11/172
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A vibration damper comprising a magnet having a mass m and an elasticity c.sub.1, and a spring element of flexibly compliant material having an elasticity c.sub.2, wherein the magnet is mounted on the spring element so that the resiliency c.sub.1 of the magnet and the resiliency c.sub.2 of the spring element form an combined elasticity c.sub.tot of the vibration damper. The vibration damper is attached to a plate of magnetizable material which exhibits an interference frequency .omega..sub.1 and is attracted to the magnet. The magnet is movable relative to said plate in every operating position. The mass m and elasticity c.sub.1 of the magnet and the elasticity c.sub.2 of the spring element are adjusted to achieve a natural frequency .omega..sub.0 on the basis of the formula: ##EQU1## so as to allow the resulting natural frequency .omega..sub.0 to be adjusted in accordance with the interference frequency .omega..sub.1 of the plate.