A drive plate (1) is provided with a plate part (2) which is connected to a crankshaft of an engine, and an annular ring gear part (3) which axially extends from the outer periphery of the plate part (2) and has a plurality of external teeth (30) that mesh with a pinion gear (PG) of a cell motor for cranking the engine, the plate part (2) and the ring gear part (3) are integrally formed by press working, a plurality of inside recessed sections (30r) are formed on the inner peripheral surface of the ring gear part (3) so as to be located inside the respective plurality of external teeth (30) at least on the free end (3b) side of the ring gear part (3), and each of the plurality of external teeth (30) has a step section (30s) that is recessed further inward than the tooth tip thereof on the free end (3b) side.
