Elastic coupling with spring guides

US4884996A · kind A · utility

Assignee

• J.M. Voith GmbH · DE

Inventors

• Manfred Schmitt · Munich, DE
• Wolfgang Hanke · Heidenheim, DE

Key dates

• Filing date: Dec 12, 1988
• Grant date: Dec 5, 1989
• Expiry date: Dec 12, 2008

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D3/66
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An elastic coupling (1) of disc construction and of the kind in which two coupling halves (2, 3) rotationally interlock and have helical compression springs (5) tangentially arranged in ports (4) in the coupling halves, which transmit torque from one coupling half to the other. So as to avoid the springs curving outwards at high rotational speed and/or with a low loading, under the effect of centrifugal force, sliding members (10) are loosely inserted into the ports. The sliding member can either be constructed with a concave groove (11) which partially surrounds the spring from outside and is disposed between the coils of the spring and its respective ports, or in the shape of a bar (10a) which is loosely inserted coaxially into the spring. The springs (5), on their sides turned towards the axis of rotation, are prevented from being overstressed by high end pressure and also wear connected with excessive curvature caused by increased end pressure, and also reduce the danger of the springs jumping out of their centering. A further advantage is that the oscillation and damping behaviour of the coupling remain unchanged.