Patent ID: 9013077
Filing Date: 2015-04-21
Classification: H02K

Abstract:
1. A rotary electric machine comprising: a stator; a rotor that is arranged within the stator; a frame that encloses the stator and the rotor; a pair of bearings that respectively support a driving side and a driven side of a rotary shaft; and a fan that is installed on inside of the rotary electric machine, that is mounted on the rotary shaft, and that stirs air in the inside of the rotary electric machine, wherein a plurality of blades that extend in a radial direction of the rotor and that are provided to stand at a substantially equal interval in a rotation direction of the rotor are formed in the fan, and each of the blades is provided between a disk-shaped main plate that is formed with a through hole through which the rotary shaft is inserted and a ring that holds an end opposite to the main plate of the blade, and each of the blades has an elliptical shape extending in a direction from the through hole to an outer periphery of the main plate, and widens from the ring toward the main plate.