| 摘要 |
PROBLEM TO BE SOLVED: To eliminate special measures to wire connection portion by achieving an increase of air gap without depending on a displacement of a stator itself when the increase of air gap is enabled for induced voltage suppression. SOLUTION: An actuator 17 is driven so that a long pinion 18 may rotate in the direction of an arrow, a nonmagnetic yoke 11 is so rotated that its outer perimeter may be displaced in the direction of an arrow A3 through an idler gear 19, and a nonmagnetic yoke 12 is so rotated that its outer perimeter may be displaced in the direction of an arrow A4. In this way, the magnetic material 7 is displaced in the direction of arrow A3 while being touched with a stator core 3a, and at the same time, the magnetic material 8 is displaced in the direction of arrow A4 while being touched with a stator core 4a, so that an air gap γis formed through estrangement of those members. This γ becomes an additional air gap to a magnetic path Z2, and is added to axially direction air gaps α and β so that an induced voltage can be controlled. The displacement of stators 3 and 4 is not required, so special measures to the wire connection portion of the stator coils 3a and 4a is unnecessary. COPYRIGHT: (C)2010,JPO&INPIT |
