Patent ID: 7671495

Claim:
An armature comprising: a core that includes a ring portion and a plurality of tooth portions, wherein each of the plurality of tooth portions extends radially outward from an outer peripheral part of the ring portion, and a plurality of slots is defined such that each slot is formed between corresponding adjacent two of the plurality of tooth portions; and a plurality of windings, each of which is wound around at least two of the plurality of tooth portions to form at least two wound parts of the winding, wherein: a crossover of each winding, which connects between corresponding two of the at least two wound parts, is placed on one axial side of the ring portion; a crossover relief space is axially recessed in an end surface of the ring portion on the one axial side of the ring portion at a location radially inward of an outer peripheral surface of the ring portion; and at least a portion of each crossover is received in the crossover relief space, wherein a guide wall axially protrudes in the core on the one axial side of the ring portion such that the guide wall is radially inwardly spaced from an inner peripheral surface of the ring portion to radially define the crossover relief space all around the guide wall between an outer peripheral surface of the guide wall and the inner peripheral surface of the ring portion; and each crossover is held along the outer peripheral surface of the guide wall.