Patent ID: 7880359

Claim:
A coil member comprises: a cylindrical drum part in which a coil is to be wound around an outer peripheral face of the cylindrical drum part in a circular shape and which is formed by two molding dies movable in a direction perpendicular to an axial direction along the cylindrical drum part; a flat face part which is formed on an inner side from the outer peripheral face so that a space part is formed between an innermost circumferential face of the coil which is to be wound around the outer peripheral face in the circular shape and the flat face part, and the flat face part being formed so that the two molding dies are separated without pressing the outer peripheral face of the cylindrical drum part; and a joining part on the drum part which is formed by the two molding dies and is located on the flat face part; wherein the flat face part is a parallel flat face part which is formed in parallel with separating directions of the two molding dies.