Patent ID: 8215195

Claim:
An engine starter comprising: a motor unit; a drive shaft that rotates under a motor unit driving force; a pinion gear that spline-fits to the drive shaft; and an electromagnetic controller that is fit onto the drive shaft, the electromagnetic controller connecting the motor unit with a battery power supply and allowing the pinion gear to be displaced toward a tip end side so as to be engaged with a ring gear at an engine side, wherein: the electromagnetic controller includes: an exciting coil unit that is provided with a coil main body and an exciting piece that is positioned at a tip end side of the coil main body so as to be magnetized according to an excitation of the coil main body; and a plunger that is disposed in a ring-shaped space formed at an inner diameter side of the exciting coil unit so as to be movable in the ring-shaped space in an axial center direction, the plunger being displaceable from a non-acting position to an acting position at a tip end side under an attracting force based on magnetization of the exciting piece, wherein: an urging member is provided at the inner diameter side of the exciting coil unit so as to urge the plunger to a side of the non-acting position according to demagnetization of the exciting piece, the urging member is formed to be a ring-shaped plate, and an urging part of the urging member at an inner diameter side urges a tip end face of the plunger, the urging part including a pressing piece that is notched long at a plurality of positions in a circumferential direction and bent toward the plunger.