Preloading device for a piston valve of a vibration damper

US9951839B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Helmut Baalmann · Bergrheinfeld, DE
• Hassan Asadi · Schweinfurt, DE
• Hans Gonschorrek · Bergrheinfeld, DE
• Lothar Krill · Eitorf, DE
• Alexander Kruse · Ingolstadt, DE
• Oswald Lichtlein · Arnstein, DE
• Dirk LITTERSCHEID · Eitorf, DE
• Thomas Manger · Hammelburg, DE
• Heinz Sydekum · Dittelbrunn, DE
• Harun Tucovic · Schweinfurt, DE

Key dates

• Filing date: Dec 17, 2014
• Grant date: Apr 24, 2018
• Expiry date: Dec 17, 2034

Classification

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

Abstract

A preloading device for a piston valve of a vibration damper includes a spring element which is fitted by an inner diameter onto a radially inner centering device which serves for inner centering of the spring element in the installed state of the preloading device. To provide a preloading device for a piston valve by which a reliable inner centering of a spring element can be ensured but which can be placed with low expenditure on assembly at the same time, the spring element is axially fixed at the centering device via retaining means in that the retaining means at least partially enclose the spring element axially on both sides and are rigidly connected to the centering device in each instance.