Adjustable vibration damper with valve body in piston having directional flow control

US5078240A · kind A · utility

Assignee

• Boge GmbH · DE

Inventors

• Norbert Ackermann · Eitorf, DE
• Hubert Beck · Eitorf, DE

Key dates

• Filing date: Jul 20, 1990
• Grant date: Jan 7, 1992
• Expiry date: Jul 20, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2600/26
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Adjustable vibration damper for motor vehicles with a cylinder containing damping fluid, an axially-movable piston rod immersed therein, and a damping piston attached to the piston rod, which divides the cylinder into two work chambers, whereby a damping valve equipped with a valve body and a control edge controls the effective cross section of a damping passage. The valve body has an antechamber which is in communication with the upper and lower work chamber by means of at least one passage having a check valve, and that starting from the antechamber, there is a constant throttle cross section to the back side of the valve body to pressurize a control pin controlling a throttle passsage of the valve body.