| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drainage structure for electrical connection box which can enhance waterproof performance for external moisture, while enhancing the manufacturing properties or the assembling properties and can contribute to sustain waterproofness. <P>SOLUTION: The drainage structure of an electric connection box is provided, in the case 1 thereof, with a drain outlet 4 communicating between the inside and the outside and a check valve 5 for opening/closing the drain outlet 4. The check valve 5 has a pressure-receiving surface 16 orthogonally intersecting the closing direction of the drain outlet 4 substantially, and an air receiver 17 which is to be flush with the pressure-receiving surface 16. <P>COPYRIGHT: (C)2007,JPO&INPIT |
