| 摘要 |
PURPOSE:To facilitate the manufacture by shaping a rotary fan, a field magnet and an axis of rotation by using a monoblock moulding means of plastic and a plastic magnet, and then by shaping a field magnet by magnetization. CONSTITUTION:A rotary fan 9' is moulded of plastic. A plastic magnet is moulded on the surface facing a stator armature 14' of a rotary fan 9' through clearance, so that a field magnet moulded portion is shaped. To this field magnet moulded portion multiple members of N and S poles are magnetized and shaped and a field magnet 12' is shaped. An axis of rotation 8' is also integrally shaped by extending the plastic or a plastic magnet. |
