| 摘要 |
Each tooth of a stator core (1) has circumferential projections (201) at an inner tooth edge and circumferential notches (21) at a base portion adjacent to a core back portion (3) of the teeth (2) at the base portion is larger than a width of the same at the tooth edge. Therefore, the magnetic reluctance of the teeth (2) does not increase. In addition, a plurality of the magnetic strips (10) can be formed from a long and thin magnetic sheet (100). This increases the yield percentage of the magnetic strip (10) and reduces a manpower of manufacturing the magnetic strip (10). Further, the notches (21) make it easy to wind the magnetic strip (10) into a cylindrical core. <IMAGE> |
