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    • 8. 发明授权
    • Actuator, light quantity adjusting apparatus, and stepping motor
    • 执行器,光量调节装置和步进电机
    • US07148592B2
    • 2006-12-12
    • US11025949
    • 2005-01-03
    • Makoto Miyawaki
    • Makoto Miyawaki
    • H02K37/04H02K16/04
    • H02K26/00
    • An actuator maintains high efficiency, can react to an increase in pole, has a high part fit, and can be manufactured at low cost while it is thinned. The actuator includes: a magnet which is formed in a ring shape, in which at least one surface perpendicular to a central axis thereof is divided in a peripheral direction and alternately plane-magnetized in different poles; a stator including a plurality of magnetic pole teeth opposed to the magnetized surface of the magnet; a rotor, which is held to be rotatable about a rotational axis as a center, includes a disk portion whose surface perpendicular to the rotational axis is bonded to the magnet, and is made of a soft magnetic material; and a coil, which is located on substantially the same surface as that of the magnet, is fixed to the stator, and excites the stator and the disk portion.
    • 执行器保持高效率,可以对极的增加做出反应,具有高的零件配合,并且可以在成本较低的情况下制造成薄。 致动器包括:形成为环形的磁体,其中垂直于其中心轴线的至少一个表面在周向方向上分开,并且以不同的极点交替平面磁化; 定子,其包括与所述磁体的磁化表面相对的多个磁极齿; 被保持为能够以旋转轴为中心旋转的转子包括:与旋转轴垂直的面与磁铁接合的盘部,由软磁性材料构成; 并且位于与磁体大致相同的表面上的线圈被固定到定子,并激励定子和盘部。