Patent ID: 7667367

Claim:
A laminated core having a plurality of laminated core segments connected by first joining sections and second joining sections, each of the laminated core segments having a yoke-segment section and a magnetic pole located radially inward from the yoke-segment section, the yoke-segment sections forming an annular shaped yoke, the first joining sections and second joining sections located at both ends in a circumferential direction of the yoke-segment sections of the respective laminated core segments, the magnetic pole composed of a magnetic pole shaft section projecting radially inward from the yoke-segment section and a magnetic pole tooth section located radially inward from the magnetic pole shaft section, each of the laminated core segments formed by laminating and interlocking a predetermined number of core segment sheets, each of the core segment sheets having: a yoke-segment piece corresponding to the yoke-segment section, a magnetic pole shaft piece corresponding to the magnetic pole shaft section and a magnetic pole tooth piece corresponding to the magnetic pole tooth section, the laminated core comprising: a brimmed concavity and a brimmed convexity respectively located at both ends in a circumferential direction of each yoke-segment piece, the brimmed concavity having: a triangularly shaped recess notched in the circumferential direction of the yoke-segment piece, a radially outward brim and a radially inward brim, the brimmed convexity having: a triangularly shaped projection projecting in the circumferential direction of the yoke-segment piece and conforming in shape to the recess, a radially outward brim and a radially inward brim, wherein the first and the second joining sections at both ends of each laminated core segment are formed by alternately laminating sets of the core segment sheets of one type and sets of the core segment sheets of the other type, each set consisting of a predetermined number of sheets, the core segment sheets of the two types being different in the shapes of both ends in a circumferential direction thereof, each sheet having the brimmed concavity and the brimmed convexity at both ends in the circumferential direction thereof.