RING GEAR-INTEGRATED DRIVE PLATE AND ITS MOLDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a ring gear-integrated drive plate facilitating molding work, improving the strength and rigidity of a ring gear portion and maintaining the flexibility of a drive plate portion, and its molding method. SOLUTION: The disc drive plate portion 2, the cylindrical ring gear portion 3 erected at a peripheral edge 4 of the drive plate portion 2 and having teeth 5 at predetermined pitches and a ring flange 7 extending from an open-side end 6 of the ring gear portion 3 to a radial inside are molded integrally with a plate material 8.