Patent ID: 8371020

Claim:
A method of manufacturing a stator coil that is comprised of a plurality of phase windings, the method comprising: a shaping step for shaping electric wires to form a plurality of shaped wires; an assembling step for assembling the plurality of shaped wires to form a wire assembly; and a rolling step for rolling the wire assembly around a core member to form a rolled wire assembly, characterized in that: each of the shaped wires includes a plurality of straight portions, which extend parallel to each other and are arranged in a longitudinal direction of the wire assembly, and a plurality of turn portions that connect, alternately on opposite sides of the straight portions, adjacent ones of the straight portions; the shaped wires have, in the longitudinal direction of the wire assembly, a plurality of straight superposed parts each of which is formed by superposing a pair of the straight portions of the shaped wires; the rolled wire assembly obtained in the rolling step has, in a circumferential direction of the rolled wire assembly, a plurality of straight stacked parts each of which is formed by stacking a predetermined number of the straight superposed parts in a radial direction; and in the rolling step, the wire assembly is rolled around the core member with aligning members being sequentially inserted into spaces formed between adjacent ones of the straight superposed parts of the wire assembly to secure the superposition of the straight portions in each of the straight superposed parts and make intervals between adjacent ones of the straight superposed parts even.