Patent ID: 9188099
Filing Date: 2015-11-17
Classification: F02N,Y10T

Abstract:
1. A starter comprising: a motor unit which generates a rotary force by applying current; an output shaft which rotates by the rotary force applied from the motor unit; a housing in which at least one side end of the output shaft is rotatably supported; a pinion mechanism configured with a pinion gear having helical teeth, the pinion gear being installed slidably on the output shaft and is meshed with a ring gear of an engine in a helical engagement, a pinion inner member which is provided unrotatable relative to the pinon gear while slidable in the axial direction relative to the pinion gear, and a pinion spring which is provided between the pinon gear and the pinion inner member; a clutch mechanism which is installed between the output shaft and the pinion mechanism to transmit the rotary force of the output shaft to the pinion mechanism; a movement regulation unit which is installed between the output shaft and the clutch mechanism and regulates that the pinion mechanism and the clutch mechanism slide toward one side by equal to or larger than a predetermined value by interfering with the clutch mechanism; and an electromagnetic device configured to apply or shut off a current to the motor unit, and biases a suppressing force toward the ring gear to the pinion gear through the clutch mechanism, wherein the pinion spring is configured as a damper mechanism upon the pinion gear abutting the ring gear, and wherein a load receiving member is installed in the housing, the load receiving member which contacts an end surface of the output shaft to receive a thrust load generated from the output shaft, when the thrust load generated in the pinion gear towards one side of the output shaft by meshing between the pinion gear and the ring gear in a helical engagement is transmitted from the pinion gear to the output shaft through the clutch mechanism and the movement regulation unit.