| 摘要 |
1. A beading of rubber or plastics material having a middle portion (1) and two side portions (2) forming a substantially U-shaped cross-sectional profile with a metallic insert (3) embedded in it, the beading being mountable on a retaining flange (11) of a vehicle body or the like and being provided, on at least one side portion (2), with a retaining lip (4) which is formed integrally on the inside of the beading and extends continuously in the longitudinal direction of the beading so as to bear against the retaining flange (11), which retaining lip comprises a resilient neck portion (5) forming a pivot point (7) as seen in cross-section, and a head portion (6) which adjoins the neck portion and has a bearing surface (8) of convex shape facing the retaining flange (11), characterized in that, in relation to the pivot point (7), the bearing surface (8) is formed in the manner of a spiral with a radius which increases towards the middle portion (1) of the beading. |
