ROTATING ELECTRIC MACHINE

The invention provides a rotating electric machine. When the coolant flow path is configured by a plurality of members for cooling a rotor, there is the problem that cooling efficiency decreases due to a coolant leakage unless the airtightness between the members is enhanced. A coolant flow path structure which cools a rotor is configured of a first coolant flow path forming a radial coolant flow path of the rotor and a second coolant flow path communicating with the first coolant flow path and forming an axial coolant flow path of the rotor, and a negative pressure structure, which brings an exist of the coolant flow path structure into a negative pressure as a result of a rotation of the rotor, is provided at the exit of the second coolant flow path. 本发明提供种旋转电机。若为了对转子进行冷却而利用多个构件构成冷却液流路，则存在若不提高构件之间的气密性则冷却液会泄漏，从而导致冷却效率降低的问题。利用作为转子的径向冷却液流路的第冷却液流路以及与所述第冷却液流路连通并作为所述转子的轴向冷却液流路的第二冷却液流路构成对所述转子进行冷却的冷却液流路结构，在所述第二冷却液流路的出口具有随着所述转子的旋转使所述冷却液流路结构的出口成为负压的负压结构。