Patent ID: 6700245
Filing Date: 2004-03-02
Classification: H02K

Abstract:
A motor comprising:a motor main body that includes a rotatable shaft, wherein the rotatable shaft is rotated upon energization of the motor main body; a speed reducing unit that is connected to the motor main body and includes a worm shaft, wherein the worm shaft is rotatably supported and is substantially coaxial with the rotatable shaft; and a coupling means for coupling between the rotatable shaft and the worm shaft, wherein the coupling means retains lubricant; and a stopper that restrains axial movement of at least part of the coupling means, wherein: the speed reducing unit further includes at least one surrounding wall arranged radially outward of the coupling means, wherein each of the at least one surrounding wall has a single axial length and an end surface arranged on a motor main body side of the at least one surrounding wall, and the end surface of each of the at least one surrounding wall is engaged with the stopper; and the coupling means is substantially entirely surrounded by at least one of the stopper and the at least one surrounding wall in an imaginary plane, which is substantially perpendicular to the axis of the worm shaft, to substantially restrain radially outward effluence of the lubricant.