| 主权项 |
1. A permanent magnet embedded type rotating electrical machine comprising:
a rotor including:
a rotor core formed by a plurality of stacked and laminated magnetic steel plates; anda plurality of permanent magnets embedded in the rotor core; and a stator having a coil, wherein each magnetic steel plate has a plurality of magnet holes, a plurality of connecting portions and a plurality of sectional areas, the magnet hole accommodates the permanent magnet in the magnet hole, the magnetic steel plates are fixedly connected by the connecting portions in a stacking direction, the sectional area is surrounded by lines extending between the opposite ends of the magnet hole and between a rotation center of the rotor and the respective ends of the magnet hole, the connecting portion is a joining portion at which any two adjacent magnetic steel plates are joined in the stacking direction by bending the magnetic steel plates or a fastening hole in which a fastening member is inserted to fixedly connect the magnetic steel plates, the connecting portions include both the joining portion and the fastening hole, the connecting portion is provided only inside of the sectional area, and the connecting portion provided in the sectional area is at least one of the joining portion and the fastening hole. |
