| 摘要 |
PURPOSE:To improve radiation, and to ameliorate efficiency by forming an armature core by laminating thin plates and fast sticking the core to a frame. CONSTITUTION:The thickness of the plate of an armature core 3 is selected within a range of 0.35-0.70mm., an outer circumferential section of the armature core is covered with the frame 1, and each frame 1, 2 is fixed mutually by a through bolt 4. The heat of the armature core 3 is radiated to the frame 1 and further the frame 2 fastened by the bolt 4 through the outer circumferential surface 14 of the armature core because the outer circumferential surface 14 is fast stuck onto the inner circumferential surface of the frame 1. Accordingly, since the temperature of the armature core drops largely regardlss of the number of the cores laminated, the thickness of the core, the temperature of armature winding 5 also drops, and efficiency can be improved. |
