| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To stably cool a stator or a rotor of a rotary electric machine even when a rotational axis of the rotor is inclined in the horizontal direction. <P>SOLUTION: A motor generator 100 comprises a hollow shape type rotor shaft 21 through which a power shaft 51 arranged coaxially and transmitting power penetrates. The power shaft 51 internally includes: a center hole 52 extending in the axial direction; and a through hole 53 which extends from the center hole 52 in the radial direction and reaches to an outer face 51b of the power shaft 51. An interspace 21d is formed between the outer face 51b of the power shaft 51 and an inner face 21a of the rotor shaft 21. A coolant shunt 31 is disposed on the inner face 21a of the rotor shaft 21 in the vicinity of a portion facing the through hole 53 to shunt coolant so that a flow volume ratio of the coolant flowing from the through hole 53 to both sides of the axial direction of the interspace 21d becomes a prescribed value. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
