Damping valve for a shock absorber

US6749177B2 · kind B2 · utility

Assignee

• ZF Sachs AG · DE

Inventors

• Gunther Handke · Euerbach, DE
• Gunther Braun · Wuppertal, DE
• Peter Wirth · Winsen, DE
• Gerald Fenn · Pfersdorf, DE

Key dates

• Filing date: Dec 3, 2002
• Grant date: Jun 15, 2004
• Expiry date: Dec 20, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F9/3485
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Damping valve for a shock absorber includes a damping valve body with at least one valve seat surface for a valve disk which is loaded in the lifting direction by a flow of damping medium. At least one support disk arranged on the valve disk determines, by its contour, a lever arm up to an effective surface to which pressure is applied by a damping medium in the lifting direction, and this support disk is pretensioned in direction of the valve disk by a tensioning plate, wherein the damping valve body forms a line of tensioning with the valve disk, support disk and tensioning plate, wherein at least one of the contact surfaces within the line of tensioning is profiled, so that there is a contact circle at the support disk, and the radius of the contact circle matches the provided reference dimension for the contour of the support disk determining the lever arm length. The profile contains a free cut that accommodates any inaccuracies in the shape of the structural component parts contained in the line of tensioning.