Switchable bearing bushing for a motor vehicle

US10718395B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Hartmut Krehmer · Erlangen, DE
• Peter Rumpel · Feldkirchen-Westerham, DE

Key dates

• Filing date: May 17, 2016
• Grant date: Jul 21, 2020
• Expiry date: Aug 5, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H19/08
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A bearing bushing, for example, for a motor vehicle. The bearing bushing is switchable between a first and a second stiffness stage. The bearing bushing has a first elastomer ring, which is arranged rotationally fixedly on an outer circumferential surface of an inner ring, and a second elastomer ring, which is arranged rotationally fixedly on an inner circumferential surface of an outer ring. Radially between the two elastomer rings, an intermediate ring makes contact in a rotationally fixed manner with the two elastomer rings. To change in stiffness of the bearing bushing, the first elastomer ring can be bridged by the intermediate ring and at least one blocking ring which is arranged on the bearing bushing at an end side.