| 摘要 |
The thrust piece (3) can be moved in relation to the support (2) and automatically moves under its own weight from a release to a fastened position. The thrust piece is movably positioned on an L-shaped basic body (1). The thrust piece with its pivot axle (19) is positioned in pref. U-shaped rails (4,5) of the basic body. The longer arm (6) of the basic body has the rails and the shorter arm (2) of the basic body forms the support. The crossbar (20) of the thrust piece is parallel to the support in a fastened position and its parallel parts (21,22) are close to the edge sections (4a,5a) of the rails. |
