Patent ID: 9154010
Filing Date: 2015-10-06
Classification: H02K

Abstract:
1. An armature comprising: a tooth portion; an insulator that is mounted on the tooth portion; and a conducting wire that is wound around the tooth portion via the insulator; wherein the insulator includes a first member and a second member that are combined with each other; the first member includes a first end wall that covers an upper side end in an axial direction of a winding portion in which the conducting wire is wound around the tooth portion, and a pair of plate-shaped first side walls that extend from the first end wall to a lower side of the insulator in the axial direction and covers both side portions of the winding portion; at least one of the pair of first side walls includes a first abdominal portion that extends to the first end wall, and a first overlap portion that is positioned closer to the lower side than the first abdominal portion and has a thickness which is thinner than a thickness of the first abdominal portion; the second member includes a second end wall that covers a lower side end of the winding portion of the tooth portion, and a pair of plate-shaped second side walls that extend from the second end wall to an upper side of the insulator in the axial direction and cover both side portions of the winding portion; at least one of the pair of second side walls includes a second abdominal portion that extends to the second end wall, and a second overlap portion that is positioned closer to the upper side than the second abdominal portion and which has a thickness which is thinner than a thickness of the second abdominal portion; the first overlap portion is disposed farther from an outer side of the insulator than the second overlap portion in a thickness direction in the at least one of the pair of first side walls in a state where the first member and the second member are combined with each other; and a plurality of ribs extending from the lower side to the upper side in an axial direction of the first overlap portion is disposed at an outer surface in the thickness direction of the first overlap portion.