Patent ID: 6825587
Filing Date: 2004-11-30
Classification: H02K

Abstract:
A motor comprising:a stator provided with a resin coil bobbin formed by insert molding having at least two metallic stator cores, said cores being stacked in an axial direction of the motor, and each core having an outer yoke and an inner yoke; a rotor accommodated in said stator, said rotor being rotated while being urged by an urging member in the axial direction of said rotor; a positional regulation part, located on one side face of said stator, integrally formed with said resin coil bobbins by insert molding, and a support portion, integrally formed with said resin coil bobbins by insert molding, constituted by a cap portion having a circular hole on which a slide bearing is positioned; and a slide bearing movable in the axial direction of said rotor and rotatable receiving one end of a shaft of said rotor; wherein the support portion is located on another side face of the stator, and supports said slide bearing, wherein the positional regulation part and the support portion regulate the position of the rotor both in the thrust and radial direction; wherein the support portion holds said slide bearing and is provided integrally with said coil bobbin, and said urging member is attached to said support portion; wherein said positional regulation part is constituted by a bearing provided at the other end of said shaft, and wherein said positional regulation part accepts indirectly an urging force of said urging member via a washer made of resin.