| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power unit which is easily assembled. <P>SOLUTION: A power unit includes a case 60 in which elements for transmitting power are placed and an opening 63 is provided, a cover 30 closing the opening 63, a cooling pipe 100 which engages with the case at one end 103 and also engages with the cover at the other end 102, and an elastic member 140 arranged between the cover and the other end of the cooling pipe. An area of a surface of the cover 30, which is in contact with the elastic member 140, forms a tapered surface 33 which gradually increases the diameter toward one end along the direction that a fluid channel extends. <P>COPYRIGHT: (C)2012,JPO&INPIT |
