Patent ID: 6861781

Claim:
A rotor of a rotary electric machine, the rotor comprising: a center shaft rotatably supported in a housing of the rotary electric machine; a cylindrical armature core fixed to the center shaft, the armature core having a plurality of slots formed therein; a plurality of inner conductor segments, each having an in-slot portion disposed in an inner portion of the slot, a rear end portion disposed at a rear side of the armature core, and a front end portion disposed at a front side of the armature core; a plurality of outer conductor segments, each having an in-slot portion disposed in an outer portion of the slot, a rear end portion disposed at a rear side of the armature core, and a front end portion disposed at a front side of the armature core, wherein: an armature coil is formed by electrically connecting the inner conductor segments and the outer conductor segments in a predetermined manner; and at least the rear end portion of the outer conductor segment extends in a direction substantially perpendicular to an axial direction of the center shaft and is formed so that an axial thickness of the rear end portion of the outer conductor segment gradually increases along the substantially perpendicular direction to the axial direction, thereby making a cross-sectional area of the rear end portion substantially uniform throughout its entire length.