PURPOSE: To improve the torque characteristics of a motor by fixing a magnet on the end surface of a rotor while arranging a position sensitive element so as to be oppositely faced to the magnet.
CONSTITUTION: The rise section of a fixed pole member 2, the nose section of a magnetic core member 4, the nose section of a magnetic core section 12 and the fall section of a fixed member 10 fill the roles of stators 2a, 4a, 12a, 10a to a rotor 6. A permanent magnet 19 magnetized at a plurality of poles of the same number as the rotor 6 is fastened to the end surface of the rotor 6. Hall elements 21, 22 are disposed oppositely to the permanent magnet 19, and the Hall elements 21, 22 are mounted separated by 90° in order to take the timing of driving currents caused to flow through stator windings 3, 11.
| JPH1118346 | BRUSHLESS MOTOR |
| WO/2001/095464 | BRUSHLESS MOTOR |
YOSHIDA SHIGERU
KUROSAWA AKIRA
TAKAHASHI TORU
CANON DENSHI KK
| JPS60174056A | 1985-09-07 |