Patent ID: 8613348
Filing Date: 2013-12-24
Classification: F16F

Abstract:
1. A hydraulic oscillation damper, comprising: a damper tube which is filled at least partially with damping liquid; a piston rod which can be extended from and retracted into the damper tube in an oscillating manner; a working piston which is attached to the piston rod and divides the damper tube inner space into a first working chamber that is remote from the piston rod, and a second working chamber on the piston rod side; first and second damping valves which are disposed hydraulically in parallel with the working piston, are attached to the damper tube and have a continuously adjustable damping force; wherein, the damping liquid flows through the first damping valve only when the piston rod performs a retraction movement; the damping liquid flows through the second damping valve only when the piston rod performs an extension movement; both damping valves are disposed in a common housing having a first hydraulic chamber and a second hydraulic chamber; the first hydraulic chamber is connected via a first bore to the first working chamber, and the second hydraulic chamber is connected via a second bore to second working chamber; and a flow guiding element separates the two hydraulic chambers from one another, such that the damping liquid that flows into the first hydraulic chamber when the piston rod performs a retraction movement is supplied to the first damping valve in the valve through-flow direction, and the damping liquid that flows into the second hydraulic chamber when the piston rod performs an extension movement is supplied to the second damping valve in the valve through-flow direction.