| 摘要 |
<p>A permanent magnet type synchronous motor is disclosed, comprising a rotor iron (11) core rotatably arranged and having holes (12) in a plurality of portions in the circumferential direction; permanent magnets (55) assembled in the holes (12); a stator iron core (52); and coils (39) arranged in the stator iron core (52). Moreover, the permanent magnet (55) includes a straight portion (25) extending widthwise, tapered portions (27) formed at both ends of the straight portion and each extending obliquely outward in the direction of approaching the other, and an arcuate portion (28) jointing the two tapered portions (27), and is supported by tapered portions (17) formed at both ends of the holes (12) and each extending obliquely outward in the direction of approaching the other. When the rotor is rotated, the centrifugal force is applied to the tapered portions of the holes but not to the arcuate portion.</p> |
