| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric power conversion device which prevents deformation of cylindrical pipes and stably fixes a cooler to a frame. <P>SOLUTION: An electric power conversion device 1 has a semiconductor module 2 having a built-in a switching element, a cooler 3 including a pair of cylindrical pipes 31 guiding or discharging a cooling medium into an interior cooling passage, a frame 4 holding the cooler 3, and clamps 5, each of which fixes each cylindrical pipe 31 to the frame 4. Each clamp 5 has a fastening part 51 fastened to the frame 4 and a pressing part 52 pressing the cylindrical pipe 31 toward the frame 4. Each cylindrical pipe 31 is held by the clamp 5 and a recessed bearing part provided at the frame 4. Each cylindrical pipe 31 is supported by two bearing surfaces in the recessed bearing part and the pressing part 52 of the clamp 5 at three support points when viewed from a direction that the cylindrical pipe 31 projects. <P>COPYRIGHT: (C)2012,JPO&INPIT |
