Adjustable damping valve device

US10060543B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Thomas Manger · Hammelburg, DE
• Stefan Schmitt · Goldbach, DE
• Lukas RUHMANN · Gremsdorf, DE

Key dates

• Filing date: Jun 29, 2015
• Grant date: Aug 28, 2018
• Expiry date: Jun 29, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K17/105
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An adjustable damping valve device for a vibration damper, includes a main stage valve which is controlled by a pre-stage valve which is functionally connected in series with the emergency operation valve. A pressure relief valve having the constructional form of a seat valve is arranged inside the emergency operation valve and is functionally connected in parallel with the emergency operation valve. A valve body of the pressure relief valve is formed by at least one annular valve disk.