| 摘要 |
PURPOSE:To eliminate the irregularity in a magnetic flux distribution due to a magnet by restricting the circumferential direction of the magnet by projections formed at an equal interval in the circumferential direction on the inner periphery of a yoke. CONSTITUTION:After magnets 2a-2d are axially positioned, leaf springs 3a-3d are mounted between projections 1a-1d and the magnets 2a-2d. Then, the magnets 2a-2d are pressed to projectoins 1a-1d side by the spring forces of the springs 3a-3d to fix the magnets 2a-2d. Accordingly, since the magnets 2a-2d are pressed to the projections 1a-1d side by the springs 3a-3d irrespective of the irregularity in the spring loads of the springs 3a-3d, the positional relationship of the magnets 2a-2d corresponds to the projections 1a-1d to be disposed an equal interval in the circumferential direction. Thus, output performance, rec- tification, and demagnetizing withstand force stabilization can be obtained. |
