| 摘要 |
<p>The system has a metallic counter plate provided as a counter part, with a base plate (1) that corresponds to a design of hook pairs of the counter plate, where the pairs are respectively hooked with associated hook pairs of the base plate. Bending lines (7) are rotated around a direction of 90 degrees by the hook pairs to be hooked together with the base plate and counter plate, so that hooking takes place by a right angled overlapping of hooking edges (15) joining together during the hooking. A hooking element (5) is designed with a foot part (11) and a head part (9) on the bending lines.</p> |
