Patent ID: 9593735
Date: 2017-03-14
CPC Classifications: F16F

Claim:
1. A hydraulic damper for a motor vehicle suspension, comprising: a tube filled with working liquid inside of which a slidable piston body attached to a piston rod led outside the damper is disposed, wherein the flow of the working liquid is controlled within said tube during the rebound and the compression stroke of the slidable piston body by at least one spring valve assembly provided with an axial member and rebound and compression valve assemblies surrounding the axial member; wherein said at least one spring valve assembly comprises: a slidable piston body provided with through flow channels; at least one deflectable disc covering said through flow channels; a supporting member fixed to said axial member for clamping said at least one disc at an inner circumferential part thereof, said supporting member having an outer surface; a spring seat disposed around said supporting member and including a rim portion extending radially outwardly and at least one axial projection abutting said at least one disc in at least one radial position at an outer circumferential part thereof, and said spring seat further including a sleeve part extending axially from said rim portion and having an inner surface; a spring preloaded between the spring seat and the supporting member; wherein said at least one axial projection extends axially from said rim portion away from said spring and perimetrically engages at least one disc and being tapered from a first inner diameter axially farthest from said rim portion to a smaller second inner diameter axially proximate said rim portion for guiding said spring seat over said at least one disc during assembly of the hydraulic damper, and wherein a circular gap is provided between said inner surface of said sleeve part of said spring seat and said external surface of said supporting member.