Torsional vibration damper, particularly for the clutch disk of a motor vehicle friction disk clutch

US4485906A · kind A · utility

Assignee

• Sachs Systemtechnik GmbH · DE

Inventors

• Dieter Lutz · Schweinfurt, DE
• Wolfgang Thieler · Haßfurt, DE

Key dates

• Filing date: Jul 20, 1982
• Grant date: Dec 4, 1984
• Expiry date: Jul 20, 2002

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F15/16
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The torsional vibration damper which is suited in particular for the clutch disk of a motor vehicle friction clutch has two damper parts (13, 17) rotatable relative to one another around a common rotational axis (7) over a defined rotational angle, which damper parts (13, 17) together enclose at least one, preferably, at least three, damper chambers (33, 35) sealed outwardly and at least partially filled with a hydraulic fluid. A roller body (37) is arranged in each damper chamber (33, 35) which roller body (37) divides the damper chamber (33, 35) in the circumferential direction into two spaces (39, 41) whose relation of volume changes during the relative rotation of the damper parts (13, 17). A throttle connection (47) between the two spaces (39, 41) makes possible the compensation of the hydraulic fluid as a by-pass connection to the roller body (37). The damper chamber is formed by means of two recesses (33, 35) located opposite one another and with volumes varying from one another in faces (29, 31 ) of the damper parts (13, 17), which faces complement one another, adjoin one another on opposite sides and move relative to one another during relative rotation. The circumference …