Patent ID: 7023123

Claim:
A motor for a meter comprising: a stator including a plurality of stator yokes, coils obtained by a winding of a magnet wire arranged on the stator yokes, and pole teeth arranged on an inner periphery of the stator yokes; a rotor assembly disposed in a central portion of the stator with a gap opposing the pole teeth, the rotor assembly includes a magnet arranged on an outer periphery of a sleeve made of a resin and a rotary shaft made of metal, the rotary shaft is hollow-cylindrical with open ends, an inner wall of the rotary shaft is coated with a light-reflecting layer; a front plate arranged at an upper end of the stator in an axial direction, the front plate is made of a first resin material and has a projection at its center to prevent axial play of the rotor assembly; and a rear plate arranged at a lower end of the stator in the axial direction, the rear plate is made of a second resin material and has a projection at its center to prevent axial play of the rotor assembly; wherein the stator is integrally constituted by molding resin material for positioning and fixing each individual part of the stator, wherein the projections of the front and rear plates have respective bearings to rotatably support the rotary shaft.