Patent ID: 9748819
Date: 2017-08-29
CPC Classifications: H02K

Claim:
1. A motor, comprising: a rotor having a rotor cover; a stator sleeving on the rotor; a housing sleeving on the stator, the housing defining an oil inlet hole and an oil outlet hole; and a driving shaft passing through and being non-rotatably coupled to the rotor, two end portions of the driving shaft protruding out from the housing; wherein an inner sidewall of the housing and an outer sidewall of the stator cooperatively form a gap in fluid communication with the oil inlet hole and the oil outlet hole; wherein the inner sidewall of the housing, the outer sidewall of the stator, and an outer wall of the driving shaft cooperatively define a flowing space; wherein the oil inlet hole, the gap, the flowing space, and the oil outlet hole cooperatively define an oil cooling channel; and wherein the housing comprises a base body, a first cover, and a second cover, the first cover is fixedly positioned on a first end of the base body, and the second cover is fixedly positioned on a second end of the base body, the gap is formed between an inner wall of the base body and the outer sidewall of the stator, the flowing space comprises a first flowing space and a second flowing space, the first flowing space is cooperatively formed by a sidewall of the first cover toward the stator, an outer wall of the stator, a sidewall of the rotor cover positioned adjacent to the first cover, and the outer wall of the driving shaft; the second flowing space is cooperatively formed by a sidewall of the second cover toward the stator, the outer wall of the stator, a sidewall of one rotor cover positioned adjacent to the second cover, and the outer wall of the driving shaft; the oil inlet hole and the oil outlet hole are defined in one of the first cover and the second cover.