| abstract |
(57) [Summary] [PROBLEMS] To secure a magnetic path width between the bottom of a winding groove and an outer diameter of a stator core, and to provide an electric motor with a high space factor and a high efficiency by means of aligned windings. To provide. SOLUTION: An outer diameter portion of a stator core 21 has a notch or flat portion, and a point of the notch or flat portion having the shortest distance from a rotation center of the rotor, and a rotation center of the rotor. Are provided on the line connecting the two, and the bottom shape of the winding groove 23 is set so that the bottom shape of the winding groove 23 is perpendicular to the salient poles on both sides, and near the center of the bottom of the winding groove 23. It is characterized by a line that is orthogonal to a line connecting an arc around the center of rotation or the center of rotation of the rotor and the center of the bottom of the winding groove 23. |