| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power conversion device having an excellent productivity and having a high watertight property.SOLUTION: A power conversion device 1 comprises: a semiconductor module; a cooling unit having a pair of cooling medium lead-in and exhaustion pipes 120; a case housing the semiconductor module and the cooling unit while protruding the pair of cooling medium lead-in and exhaustion pipes 120 outward from a pair of openings 21; and a pair of grommets 3 configured by an elastic material, and arranged so as to be engaged with the openings 21 in a state that the pair of cooling medium lead-in and exhaustion pipes 120 are made to penetrate therethrough. Each grommet 3 has: a grommet main body part 31 having a penetration hole 301 through which the cooling medium lead-in and exhaustion pipe 120 penetrates, and a seal surface 310 configured so as to be tightly adhered with an inner peripheral surface 213 of the opening 21; and a guide part 32 protruded from one end part of the penetration direction of the cooling medium lead-in and exhaustion pipe 120 in the grommet main body part 31 to the outside of the seal surface 310. A reinforcement member 4 consisting of a metal is incorporated in the grommet 3, and at least a part of the reinforcement member 4 is arranged to the guide part 32.</p> |
