FRICTION CLUTCH WITH AUXILIARY SPRING FOR ASSISTING INTERRUPTING FORCE

摘要

PROBLEM TO BE SOLVED: To simply reduce the operating force of a diaphragm spring type clutch by making air force applied by a diaphragm spring or a coned disc spring greater than force applied to a shutoff mechanism by the diaphragm spring at a position of no existance of an air distance. SOLUTION: A diaphragm spring or a coned disc spring 14 is designed and arranged so as to apply entirely no or less air force to a diaphragm spring 9 at a position of clutch-in of a friction clutch 1. Shutoff motion is the motion of a spring tongue 11 of the diaphragm spring 9 in the direction of an arrowmark A or the motion of the diaphragm spring 9 in opposition to the direction of the edge at the radial outside but the diaphragm spring or the coned disc spring 14 receives greatly increasing shutoff force applied to the diaphragm spring 9 with increasing shutoff motion, making it possible to clearly reduce the operating force of the friction clutch 1.