| 摘要 |
<p>A divided iron core comprising arc-shaped divided-iron-core blocks (1), each of which comprises laminated sheet metal, joined so as to form a ring and stacked in the thickness direction. Welding grooves (1d) are formed in the outer surface of said divided iron core (1) at equal intervals in the circumferential direction around the central axis, and welding plates (3) thinner than the welding grooves (1d) are deep are welded in said welding grooves (1d). The circumferential positions of the divided-iron-core blocks (1) stacked in the thickness direction are offset per interval (?) separating the welding grooves (1d) in the circumferential direction, thereby making it possible to reduce the amount of labor required and preventing the iron core from opening.</p> |
