LAMINATED IRON CORE AND PRODUCTION OF THE SAME

摘要

A laminated iron core (10) and production of the same in which multiple iron segments (13) having bent connectors (12) at sidewise opposite ends on their outermost circular edges (11) thereof are pieced together successively in a spiral winding by means of their bent connectors in a relation coming into matching with companion segments (13) along their inside and outside circular edges while overlapping on top of the other with their bent connectors (12) in adjacently stacked winds being staggered circumferentially each other. On the radially outermost edge of the bent connector (12), there is made a cut (21) to keep a radially raised portion (20) of the connector (12) radially inside the outermost circular edge around the laminated iron core (10), the radially raised portion (20) being made when getting the connector (12) bent. On the radially innermost edge of the bent connector (12), there is made an inward cut (22) to define a location where the connector (12) gets bent. On the radially outside of the iron segment (13), moreover, there is provided a recess (16) that fits over a bulge (15) raised in thickness direction of the connector (12) when getting the connector (12) bent.