| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water-proof structure of joining surface which can prevent generation of a leak current, without increase in size of an electrical joint box such as a relay box and an electronic unit or the like. SOLUTION: A water-proof structure is provided with a recessed groove 13 for partitioning a neighboring apertures 3 at a joining surface 11 of an electronic joint box to make it difficult to communicate the neighboring apertures with water, by elongating the length of clearance which allows flow of water. Otherwise, the recessed groove 13 is provided to the joining surface 11 of one electrical joint box, and a shielding wall to be inserted to the recessed groove 13 is erected at the joining surface of the other electrical joint box. In any case, a water drain can be provided at the bottom surface of the recessed groove 13.</p> |
