IMPROVED STRUCTURE OF ENGINE STARTER EQUIPPED WITH PLANETARY GEAR SPEED REDUCER

摘要

A starter for automotive engines is provided which is equipped with a planetary gear speed reducer. The speed reducer works to reduce the speed of rotation of an electric motor and transmit it to an output shaft which is to be moved and joined to the engine through a pinion gear for starting the engine. The starter includes a thrust load sustaining mechanism made of a plate which works to sustain a thrust load arising from backward movement of the pinion gear after start-up of the engine, thereby blocking transmission of the thrust load to an armature shaft of an electric motor to avoid damage to the armature shaft.