Valve for hydraulic damper
Abstract:
The invention relates to a valve to ensure pressure compensation between subchambers of a hydraulic damper, wherein the valve comprises a first side for connection to a first subchamber and a second side for connection to a second subchamber, the valve is designed to shut off in its rest position a flow of fluid between the two sides and comprises, when deflected from its rest position, a passage channel with a passage cross-section for admitting the flow of fluid, the valve comprises two valve elements guided towards each other and movable towards each other along a path of movement in a movement direction x, one of the two valve elements is designed as a moving element and the other valve element as a seat element, a pressure can be applied to the moving element, on the load side thereof, by a fluid coming from the first side, generating an effective force for moving the moving element in the moving direction x, and the moving element is connected to a spring system which applies to the moving element a spring force, generating a restoring force opposite to the effective moving force. At least one of the valve elements comprises a cylinder section comprising a plurality of passages, the passage channel runs through at least some of the passages and the passage cross-section is limited by a cross-section of these passages, while the other valve element comprises a closed cylindrical surface which lies on the one valve element in the rest position, shutting off the flow of fluid, and the passage cross-section can be adjusted by the deflection of the valve as a result of the movement of the moving element towards the seat element in the direction of movement x, the passage cross-section increasing with the deflection.
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