Patent ID: 9257881
Filing Date: 2016-02-09
CPC Classification: H02K

Claim Text:
1. A rotating electric machine comprising: a plurality of coils; a stator having a plurality of teeth, the plurality of coils wound on the teeth; a rotor disposed coaxially with the stator, the rotor having an outer circumferential surface that faces respective distal end faces of the teeth with a constant gap between the rotor and the distal end faces; and a coolant supply passage disposed inside the rotor, the coolant supply passage configured to eject a coolant from a coolant outlet of the outer circumferential surface of the rotor toward the distal end face of a corresponding one of the teeth so as to supply the coolant to the gap, the corresponding one of the teeth having a discharge groove on the distal end face of the corresponding one of the teeth, the discharge groove having a predetermined width, and the discharge groove inclined radially outwardly of the stator, from a coolant supply position that is an axial position of the stator facing the coolant outlet, toward one edge of the distal end face of the corresponding tooth.