| 摘要 |
<p>The side parts (1) engage over the outer ends (3a) of the ribs (3) U-fashion and are held by counter hooks as securing components in aligned recesses (4) of the ribs. The rib (7) on the side parts is arched convexly to the ribs (3) and in the installed state locates on the ribs under tension. The rib at both ends is provided with protruding side walls (8) and is formed into a hollow profile by a second rib (9) connecting the side walls. Between the two ribs (7,9) at least one connecting component (11,14) is provided and fixes the distance between them.</p> |
