Patent ID: 8018112

Claim:
A plurality of coil wires braided to each other for forming a coil assembly for a rotating electric machine in which: each of the coil wires has a predetermined length, a plurality of straight portions and a plurality of turn portions; said straight portions linearly extending in parallel to each other in a first direction substantially perpendicular to a length direction of said coil wires and substantially parallel to an axis of the coil assembly, each of said turn portions connecting adjacent two of said straight portions along the length of the respective coil wire alternately via a first-kinked-portion and a second-kinked-portion, respectively, said first-kinked-portions being kinked in a second direction substantially perpendicular to both the first direction and the length direction of said coil wires, said second-kinked-portions being kinked in a third direction substantially opposite to the second direction so that said turn portions are formed in a wave-shape in the length direction of said coil wires, wherein each of the turn portions has first steps leading to the adjacent two straight portions and a center portion located between the first steps, the first steps and the center portion each extending substantially perpendicular to the straight portions, the center portion being located farther from the straight portions than the first steps in the first direction, the center portion having a crank portion bent in a plane of the center portion that is substantially perpendicular to the first direction.