Patent ID: 6333567
Filing Date: 2001-12-25
Classification: F02N

Abstract:
A starter having an output shaft driven by a motor, said starter comprising:a plunger;an exciting coil; andan overrunning clutch having a thrust spline which is spline-joined with said output shaft,said plunger, said exciting coil and said overrunning clutch being coaxially disposed with respect to said output shaft,wherein said plunger is attracted in a direction toward an exciting core when said exciting coil is excited, such that said plunger is operative to energize said motor and to move said overrunning clutch so that said thrust spline is moved toward a ring gear to mesh with a pinion disposed on the overrunning clutch, with the ring gear thereby starting an engine, andwherein said overrunning clutch is arranged so that one end of said thrust spline is positioned so as to maintain a prescribed interval from an end of said plunger facing the exciting core in the condition where the plunger is unexcited by the exciting coil and the outside periphery of said output shaft which corresponds to said prescribed interval is covered by a cylinder body formed of a non-magnetic material or less permeable material, and wherein said prescribed interval is made larger than an interval between an end of said exciting core facing said plunger and the end of said plunger facing said exciting core.