COOLING STRUCTURE OF ROTARY ELECTRIC MACHINE

PROBLEM TO BE SOLVED: To provide a cooling structure of a rotary electric machine for adjusting pressure of cooling liquid supplied to a cooling liquid supply pipe with a simple structure and improving cooling performance of the rotary electric machine. SOLUTION: The cooling structure of the rotary electric machine includes: a case 31 storing a motor generator MG1; and an oil pipe 41 having an oil passage 43 which is positioned and arranged between an upper face 31A of the case 31 and the motor generator MG1 so that it extends in an axial direction of the rotor 18 and in which oil circulates, and discharge holes 44 to 46 discharging the oil toward a three phase coil 30. Discharge holes 47 to 49 are formed on an upper part of the oil pipe 41 facing the upper face 31A of the case 31. A pair of guide ribs 50b guiding the oil discharged from the discharge holes 47 to 49 to the upper part of the three phase coil 30 are installed on the upper face 31A of the case 31. COPYRIGHT: (C)2011,JPO&INPIT