| 摘要 |
PROBLEM TO BE SOLVED: To obtain an axial direction gap type micromotor which can suppress cogging torque and reduce torque fluctuation rate. SOLUTION: Stator teeth 11 and 21 of an axial direction gap type micromotor, having a rotor 3 comprising a disc-type permanent magnet which is magnetized in the axial direction so as to position the polarities N and S alternately in the circumferential direction and has a plurality of pole pairs on both its sides and has a 1st stator 1 and a 2nd stator 2, which are placed on both the sides of the rotor 3 so as to face each other vertically with a gap therebetween and have the plurality of teeth 11 and 21 respectively and armature windings 4 wound on the stator teeth 11 and 21 are formed into involute curves as viewed in the axial direction of the micromotor. If currents are applied to the armature windings 4 of the respective stators, the rotor 3 rotates smoothly even if the rotation angle is changed.
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