| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure a stable sealing performance of a seal portion while reducing insertion resistance of a lid member. <P>SOLUTION: A lid member with a waterproof function comprises: a projection which is housed in an aperture integrally formed on one face of a resin-made body of the lid member for opening and closing the aperture formed on a housing; and a seal portion made of a rubber-like elastic material which is integrally formed on an outer peripheral surface of the projection and is provided with an annular projection coming into close contact with a peripheral surface of the aperture. The annular projection has a shape in which its diameter increases toward the inner side of the aperture, and is provided, on its outer peripheral surface, with a tapered surface narrowing toward the inner side. The annular projection is also provided with a seal surface having an arc-shaped cross-section which is continuous with a largest diameter portion of the tapered surface. <P>COPYRIGHT: (C)2013,JPO&INPIT |
