| 摘要 |
PURPOSE:To reduce eddy current loss to a minimum, by providing a radially laminated magnetic substance in such a way that the thin sheetlike magnetic substance is wound around a plurality of times where a plurality of through holes are formed on the outside circumference of a cored armature opposite to a field magnet with a void between them. CONSTITUTION:A group of armature coils 19 are wound around a stator armature core 18, on whose outside circumference a thin sheetlike magnetic substance 21, e.g., preferably scores of or hundreds of mum in thickness where a plurality of through holes 34 are formed is wound around and fixed in a plurality of turns. This sheetlike magnetic substance 21 is radially fixed in close contact lamination. The occurrence of eddy current loss resulting in a brushless motor loss can be considerably reduced. |
