| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the leakage of a cooling medium to a space between a rotor and a stator while enhancing the cooling performance of the rotor in an electric rotary machine having a shaft core cooling structure including a rotor core composed of a steel plate laminated body. <P>SOLUTION: A cooling structure of a rotary electric machine includes: a rotor shaft 28 having a coolant supply passage 32 therein and a coolant supply port 34 supplying a cooling oil from the coolant supply passage 32 to the exterior of the shaft; a rotor core 15 fixed to the rotor shaft 28 and formed by a laminated steel plate body rotating with the rotor shaft; a coolant passage 40 provided at an inner peripheral part of the rotor core 15 and flowing the cooling oil supplied from the coolant supply port 34 in the axial direction; and a coolant acquisition passage formed at an area, which is located in the rotor core 15 and at the radially outer side of the coolant passage 40, and acquiring the cooling oil penetrating from the coolant passage 40 into spaces between the laminated steel plates. <P>COPYRIGHT: (C)2013,JPO&INPIT |
