FRICTION CLUTCH WITH AUXILIARY SPRING FOR ASSISTING INTERRUPTING FORCE

PROBLEM TO BE SOLVED: To effectively reduce operating force in a shutoff range by providing a diaphragm spring or a coned disc spring with tongues located inwardly from a spring mainbody in the radial direction and supporting the tongues on the diaphragm spring on the outside of the spring tongues. SOLUTION: At the inner diameter of a diaphragm spring or a coned disc spring 14, which is placed in an ordinary form on the outside of a spring tongue 11 via an annular ride-up area 20 with initial stress, a plurality of holding members 21 are provided. These holding members 21 constructed separately from the diaphragm spring or the coned disc spring 14 or integrally therewith are passed in and engaged with a peripheral gap between two spring tongues 11 while gripping respective spring tongues 11 from the back. In this way, the diaphragm spring or the coned disc spring 14 is prohibited from reaching a non-operation position and given shutoff assisting operation by upward spring force during shutoff motion.