| 摘要 |
PROBLEM TO BE SOLVED: To attain a simple structure and facilitate assembly by integrally forming a channel which connects axial channels to a housing. SOLUTION: A plurality of axial cooling channels 20 which are substantially in parallel with a rotating shaft 9 are disposed circumferentially in the wall of body 2a of a housing 2, and are connected to the front ends and rear ends of the adjacent channels alternately. A circumferential coolant channel 21 having a recessed groove form is disposed on the front end surface of the body 2a of the housing 2 on the front side, where the bracket 6 of the housing is fit so as to be connected to two adjacent axial coolant channels 20 in the direction of the rotating shaft 9. A radially directed coolant channel 22 having a recessed groove form is disposed on the outer surface of the end plate part 2b, which extends from the body 2a to the inward rotating shaft 9 on the rear side of the housing 2, so as to connect to different sets of axial coolant channels 20 connected in the circumferential coolant channel 21 and two axial coolant channels 20 adjacent to each other.
|
