Switchable, hydraulically damping bearing

US6435488B1 · kind B1 · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Arnold Simuttis · Bad Kreuznach, DE
• Werner Hettler · Mannheim, DE

Key dates

• Filing date: Nov 27, 2000
• Grant date: Aug 20, 2002
• Expiry date: Nov 27, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F13/264
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A switchable, hydraulically damping bearing has a supporting bearing and a bearing member that are elastically supported upon one another by a bearing spring made of an elastomeric material. The bearing has a working chamber and a compensating chamber that are arranged consecutively in the direction of vibrations. The chambers are filled with damping fluid. The working chamber and the compensating chamber are delimited by a shared partition on the sides facing each other. The chambers are connected in a fluid-conducting manner by at least one damping conduit provided in the partition. The working chamber is delimited by at least one elastic diaphragm that delimits an air chamber on the side facing away from the working chamber. The air chamber is connected to the environment by a switchable intake valve or a non-return valve, depending on the operating state of a supported engine. The air chamber can be filled with air flowing through the non-return valve when the intake valve is closed and the bearing executes pulling movements, thereby increasing bearing rigidity.