| 摘要 |
PURPOSE: To make the warp of a fixed yoke small, and downsize and thin the motor by providing a reinforcing part for a fixed yoke on the opposite side of the fixed yoke from a drive magnet. CONSTITUTION: A reinforcing plate 90 large in rigidity is fixed on the opposite side (on the downside of a silicon steel plate 52) of a fixed yoke 52 from a drive magnet 61. In this case, the quantity of a warp is controlled by adjusting the thickness properly using the fixed yoke 52 and the reinforcing plate 90 consisting of a rigid having a relatively wide variety of thickness in combination. Hereby, the warp of the fixed yoke 52 can be reduced, resisting the magnetic attraction of a drive magnet 61, and a motor can be thinned and downsized. |
