MOTOR

PROBLEM TO BE SOLVED: To provide a motor, having a stator and a rotor of different height and a sensor magnet for detecting rotor position where torque is increased, by utilizing the flux of the sensor magnet effectively while realizing miniaturization. SOLUTION: Axial height of a rotor magnet and a stator is made to coincide, by forming the stator tooth end portion of freely formable magnetic powder, and the stator tooth end portion is formed, in matching with the axial height of the rotor magnet, without having to change the positional relation of the stator and the magnet. Consequently, the flux of the rotor magnet can be utilized effectively for increasing the torque, and a motor in which vibration and noise are suppressed in the thrust direction is realized, by matching the magnetic center of the stator and the rotor magnet. COPYRIGHT: (C)2008,JPO&INPIT