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1. (WO2017016867) VIBRATION DAMPER FOR A MOTOR VEHICLE

Pub. No.:    WO/2017/016867    International Application No.:    PCT/EP2016/066487
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Wed Jul 13 01:59:59 CEST 2016
IPC: F16F 9/34
F16F 9/46
F16F 9/516
Applicants: THYSSENKRUPP BILSTEIN GMBH
thyssenkrupp AG
Inventors: SCHMIDT, Klaus
Title: VIBRATION DAMPER FOR A MOTOR VEHICLE
Abstract:
Vibration damper for a motor vehicle, comprising – a damper tube (1) which is filled at least partially with damping liquid, - a piston rod (2) which can be moved into and out of the damper tube (1), - a working piston (3) which is fastened to the piston rod (2) and divides an interior of the damper tube (1) into a first working chamber (4) and a second working chamber (5), - with a first and a second damping valve (6, 7) in each case with an adjustable damping force, wherein the first damping valve (6) is flowed through by the damping liquid during an inward movement and the second damping valve (7) is flowed through by the damping liquid during an outward movement of the piston rod (2), wherein each damping valve (6, 7) comprises a valve body (14, 15) which can be moved in a defined manner between a closed position and an open position, as a result of which a throughflow cross section of the respective damping valve (6, 7) can be set in a targeted manner, wherein the position of each valve body (14, 15) can be set in a targeted manner by way of a separate, actuable drive device (19), wherein the valve bodies (14, 15) are loaded counter to the actuating force of the drive device (19) in each case by way of a restoring means (34, 35), wherein a first of the restoring means (34) is arranged in such a way that it loads a first of the valve bodies (14) into the open position thereof, and wherein a second of the restoring means (35) is arranged in such a way that it loads a second valve body (15) into the closed position thereof.