| 摘要 |
<p>The gasket (10) has a protrusion (20) disposed near an opening (18) of a passage of a tightening unit and a rib (22), and consisting of a part of a sheet (12) deformed by projecting with respect to a surface of the sheet non deformed and to closed contour formed by intersection of patterns to multiply concave/convex parts of the protrusion. The parts are zones having high resistances to deflection due to bend of a lateral wall of the protrusion at level of the parts and to increased stiffness of the deformed sheet forming the protrusion with respect to stiffness of the non deformed sheet.</p> |
