CLUTCHES

摘要

A clutch in which a driven plate is clamped between a flywheel or other reaction member and a pressure plate (13) by a first conical diaphragm spring (14) which reacts against a clutch cover (15) which is connected with the flywheel. A second diaphragm spring (20) acts between the cover and the first diaphragm spring to either assist or oppose the disengaging movement of the first diaphragm spring to modify the clamp load characteristic of the first diaphragm spring and thus provide a flatter overall clam characteristic to give a more constant pedal effort throughout the life of the clutch as the driven plate wears. A first periphery (22,22a) of the second diaphragm spring contacts the cover and biases the second diaphragm spring (20) against a fulcrum (16) of the first diaphragm spring (14) when the second diaphragm spring is disengaged from the first diaphragm spring load in order to prevent rattle of the second diaphragm spring.