| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely cool a power conversion element contained in a hydraulic unit, which drives and controls an oil pump. <P>SOLUTION: The hydraulic unit 10 comprises: an oil tank 20 for storing oil; the oil pump 30 for circulating oil between the oil tank 20 and an object; and a power converter 42 for driving and controlling the oil pump 30. The power converter 42 is attached to the oil tank 20, and at the same time, a heat dissipation part 46 of the power conversion element 44 of the power converter 42 is formed at the oil tank 20 while facing an oil flowing part 2b in which oil flows in the oil tank 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
