| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotation motor which can be miniaturized while suppressing variation in torque. <P>SOLUTION: A yoke 13 is disposed between a pair of permanent magnets 3 and 5 to configure a rotor 7, and a rotating shaft 15 is coupled to the center of the rotor 7. Each of the permanent magnets 3, 5 has a 4-pole structure having two pairs of N-poles and S-poles, and are magnetized in a shaft direction. Phases of the magnetic poles are shifted by 90° in a circumferential direction between the permanent magnets 3 and 5. Stators 9, 11 are disposed on both sides of the shaft direction of the rotor 7, respectively. The stators 9, 11 include stator cores 17, 19 having claw magnetic poles 17b, 19b respectively at positions facing the permanent magnets 3, 5, and coils 21, 23 wound in the stator cores 17, 19. <P>COPYRIGHT: (C)2011,JPO&INPIT |
