| 摘要 |
<p>A power conversion apparatus is equipped with grommets each of which hermetically seals between one of a coolant inlet tube and a coolant outlet tube of a cooler. Each of the grommets has a sealing protrusion and is fit in a cut-out formed in an end of a side wall of a casing with the sealing protrusion pressed against an inner wall of the cut-out. The installation of each of the grommets is achieved by inserting the grommet through the cut-out in a direction from outside to inside the casing so that a portion of the grommet protrudes from the wall into the casing. The visual perception of such protrusion made by an assembly worker, therefore, enables the assembly worker to determine whether the grommet has been installed in place in the cut-out to establish a desired hermetical seal or not.</p> |
