| 摘要 |
<p>The device comprises an upper attachement part (32) intended to receive the terminal and having a threading (33), a base part (34) carrying a second threading (35) and an intermediary adjusting part (36). Said intermediary part has also a threaded portion (36/1) of which a first threading (37) cooperates with the first above-mentioned threading (33) and a second threading (38) which cooperates with said second threading (35), those two pairs of threadings being of opposite directions. The threaded portion (36/1) of the intermediary part is connected to an outer handle (39) so that, by rotating in the handle, the upper attachement part (32) is telescoped with respect to the base part (34). A safety rotary element (40) is arranged between the upper attachement part and the base part. The terminal may be orientated and rotated by means of a bowl-shaped bearing plate (11) provided at the lower wall of the terminal; said plate bears on the cylindrical flange of the upper seating attachement part; it is guided on a sliding element and is detachable therefrom together with the terminal. </p> |
