APPARATUS FOR SUPPORTING MOTOR SHAFT

摘要

PURPOSE: An apparatus for supporting motor shaft is provided to improve a durability and reduce a noise by freely rotatably supporting without a contact with both ends of motor shaft and by absorbing and damping a reverse rotation force in accordance with a load transmission. CONSTITUTION: A motor shaft(100) has a gearing(120) on its one end to enable a power transmission by means of an intermeshing and is housed in a housing(200) and cooperatively coupled with a commutator(150) and a core(170). A supporting means makes the both ends of the motor shaft to be supported in a free rotatable state, simultaneously acts to damp reverse rotation force in an axial direction. One end of the motor shaft is provided with a free end(110) extended without an interference. The other end of the motor shaft has a first bearing(400) supported on its outer perimeter, a second bearing(130) for guiding a rotation, a spring(160) interposed between the second bearing and the commutator to be elastically biased in one direction, and a stopper and its ring for supporting in the other direction.