| 摘要 |
PROBLEM TO BE SOLVED: To improve a cooling performance by preventing a pressure loss from being increased in a cooling oil path in a cooling structure for cooling a rotor with an oil by forming the cooling oil path in the rotor.SOLUTION: A rotor 1 comprises: a rotor core 5 with which a permanent magnet 18 is disposed in an outer circumferential part; and a rotor shaft 3 that is disposed in a center of the rotor core 5. In the rotor, the cooling structure for a rotary electric machine supplies the oil to a cooling oil path 12 that is formed within the rotor core 5, via a supply pol path 7 that is formed within the rotor shaft 3. In a plurality of steel sheets that form the rotor core 5, notches 12a-12d are provided at positions in different distances from the center of the rotor core 5. By stacking the plurality of steel sheets, the cooling oil path 12 is formed from the notches 12a-12d, and the cooling oil path 12 is disposed in a length direction of the permanent magnet 18.SELECTED DRAWING: Figure 1 |
