Torsional vibration damping device for clutch plates

US4890712A · kind A · utility

Assignee

• LUK Lamellen Und Kupplungsbau · US

Inventors

• Paul Maucher · Sasbach, DE
• Rudolf Honemann · Ottersweier, DE

Key dates

• Filing date: Dec 24, 1986
• Grant date: Jan 2, 1990
• Expiry date: Dec 24, 2006

Classification

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

Abstract

A friction clutch plate wherein friction linings which receive torque from the crankshaft of an internal combustion are mounted on one disc of a twin-disc input element forming part of a first damper of torsional vibrations. The output element of the first damper is a flange between the two discs and such flange can turn relative to the discs against the opposition of a set of relatively weak coil springs. The flange is made of a synthetic material. One of the discs forms part of the input element of a second damper whose output element is a flange mounted on the hub for the input shaft of a change-speed transmission with a certain amount of angular play. The flange of the first damper has internal teeth mating without play with the external teeth of the hub. The first damper operates alone during a first stage of angular movement of the one disc relative to the hub, and the two dampers cooperate during the next stage of such angular movement. The coil springs can be confined in pockets of the input and/or output element, and such element or elements can be made of a synthetic material and can act as friction rings.