Clutch disc for a motor vehicle friction clutch

US4669593A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Harald Raab · Schweinfurt, DE
• Hilmar Gobel · Grafenrheinfeld, DE

Key dates

• Filing date: Jul 22, 1985
• Grant date: Jun 2, 1987
• Expiry date: Jul 22, 2005

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F15/1238
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The clutch disc comprises for torsional vibration damping a spring system (35) dimensioned for operation under load and a spring system (51, 53) dimensioned for operation in idling. An idle motion device (5, 7) ensures that in the case of relative rotation angles in the idling operation the idling spring system (51, 53) exclusively is effective. In order to avoid jumps in the spring characteristic of the spring systems in the transition from idling operation to under-load operation, the idling spring system (51, 53) comprises at least one spring (53) which is brought into action within the rotation angle range of the idle motion device (5, 7) on approach to the under-load range and increases the spring rating of the idling spring system. Thus clutch and gear noises in this transitional range are avoided.