Patent ID: 9203270
Filing Date: 2015-12-01
Classification: H02K

Abstract:
1. A stator comprising: an annular part of an annular shape; a tooth winding portion that protrudes in an inward direction from the annular part, and around which an electric wire is wound; and a tooth end portion formed on an inward side of the tooth winding portion, the stator being formed by a first plurality of steel plates in a stacking direction corresponding to a rotational axis of an electric motor, wherein the tooth winding portion is formed by the first plurality of steel plates and a second plurality of steel plates having shapes different from one another such that at an end portion of steel plates in the stacking direction, thicknesses of the tooth winding portions gradually decrease toward the end portion in the stacking direction, and the annular part and the tooth end portion each include a protruding portion formed by the first and second plurality of the steel plates such that the protruding portion protrudes from the tooth winding portion in the stacking direction; wherein the protruding portion is formed by the first plurality of steel plates and the second plurality of the steel plates having shapes different from one another such that thickness of the protruding portion gradually decreases toward the end portion in the stacking direction.