Patent ID: 8106561

Claim:
A laminated core, including a plurality of segment core sheets spirally wound and laminated in layers while connecting portions connecting the adjacent segment core sheets are bent, radially inward or outward ends of the segment core sheets are aligned with each other, and the connecting portions in the adjacent layers are circumferentially displaced relative to each other, the connecting portions located in outer peripheral areas of the segment core sheets, the laminated core comprising: a concave cutout formed on a radially outward side of the connecting portion, the concave cutout accommodating a radially expanded part within an outer circle of the laminated core, the radially expanded part formed in the connecting portion radially outward at the bending of the connecting portion; an interior cutout formed on a radially inward side of the connecting portion, the interior cutout defining a bent position of the connecting portion; and depressed receptacles respectively formed on a top side and a bottom side of a radially outward area of the segment core sheet except for the connecting portions, the depressed receptacles each receiving a thickness-direction expanded part formed in the connecting portion in a thickness direction thereof at the bending of the connecting portion.