Patent ID: 9379594
Filing Date: 2016-06-28
CPC Classification: H02K

Claim Text:
1. An electric motor cooling medium discharge structure for discharging a cooling medium from a housing, the cooling medium cooling an electric motor, the discharge structure comprising: a shaft with an attached rotor core disposed in the housing; a first discharge port disposed in a stationary end side member supporting the shaft through a bearing at one end of the housing, wherein the first discharge port is configured to guide the cooling medium through the housing; a second discharge port through which the cooling medium in the housing passes and lubricates the bearing, wherein the bearing is provided in the end side member and supported by the end side member; and a discharge passageway through which the cooling medium passing through the first discharge port and the second discharge port is discharged out of the housing, wherein the electric motor is vertically installed, the first discharge port and the second discharge port are provided at a lower side of the housing, and the shaft extends through the stationary end side member, and wherein a seal is disposed between the stationary end side member and the shaft, the stationary end side member, the bearing, and the seal together at least partially define a bearing outside space, and the second discharge port is in fluid communication with the bearing outside space.