| 摘要 |
The inwards pointing segments (22.1, 22.2) of the profile (21) are placed in recesses located on top of a locking element (2) surrounding the lower area of the sleeve (5) and resting on a flange. When a control element (4) surrounding the upper area of the sleeve (5) is rotated inside a threaded stop element (3) the locking element (2) is tightened and the threaded bar (23) inserted. The position of the bar (23) can be adjusted with the control element (4). |
