STARTER MOTOR FOR MOTOR VEHICLE

摘要

PURPOSE: A starter motor for a motor vehicle is provided to reduce the overall length and weight of the motor by inserting the bush into the armature assembly and permitting the inner end of the overrunning clutch to move deeply into the space formed in the bush. CONSTITUTION: A starter motor comprises an armature assembly(4) mounted in a housing(1) and an assembly of front and rear brackets; an internal gear assembly(3) for receiving a power from the armature assembly; an overrunning clutch(6) for transmitting the power from the internal gear assembly to an engine; and a lever(5) operating by a magnet switch(2) so as to permit a pinion(7) of the overrunning clutch to be engaged with the ring gear of the engine. The armature assembly includes a core formed by stacking a plurality of flat cores and inserted into the intermediate portion of a shaft. A bush(44) having a space(44a) is interposed between the inner surface of the core and the shaft in such a manner that an inner end(61) of the overrunning clutch moves deeply into the space formed in the bush.