Patent ID: 6918853

Claim:
A planetary gear comprising: a sun gear; a ring gear provided coaxial to the sun gear; a plurality of pinion gears geared with the sun gear and the ring gear; a plurality of pinion pins provided at internal peripheral side and coaxial to the pinion gear to be rotatable relative to the pinion gear; a carrier having penetration bores inserted with axial end portions of the pinion pin for unitarily supporting the plural pinion pins so that the plural pinion gears rotate about the sun gear; a plate member provided on the carrier under a condition that a movement of the plate member relative to the carrier is restricted; a slit formed on an axial end portion of the pinion pin projected from one of the penetration bores along a surface of the plate member; a fitting portion unitary formed on the plate member to be fitted into the slit; a recess portion of the carrier recessed in an axial direction; and a projecting portion unitarily formed on the plate member to be engaged with the recess portion of the carrier.