Abstract: A motor coupled with a worm gear for output power transmission has a motor shaft with a worm held in mesh with the worm gear. The worm gear has a plurality of circumferentially spaced holes. An annular damper of rubber has a plurality of first circumferentially spaced projections on one axial surface thereof and fitted respectively in the holes in the worm gear, and a plurality of second circumferentially spaced projections on the opposite axial surface thereof and fitted respectively in a plurality of circumferentially spaced holes defined in a torque transmission disc coupled to a power output shaft for corotation.

Abstract: An attachment structure for brush holder springs in a motor includes a motor bracket mounted on a motor frame. The bracket has a pair of diametrically opposite projections on inner peripheral wall surfaces thereof. A pair of brush holder springs each supporting on one end portion thereof a brush for sliding contact with a motor commutator have on an opposite end portion thereof a dovetail-shaped gripping members fitting complementarily over each projection, respectively, under resilient force.