| 摘要 |
<p>A fastening device comprises a conical anchor piece ( 7, 17 ) and a conical recess ( 2 ) and, if necessary, an insertion piece ( 3 ). The conical outer surfaces ( 4, 10, 18 ) have annular grooves ( 5 ) on the one hand, and annular grooves ( 11 ) with O-rings or annular beads ( 19 ) on the other. The annular grooves ( 5 ) are somewhat offset in the height thereof with regard to the opposite annular grooves ( 11 ) or annular beads ( 9 ) so that in one anchor piece ( 7, 17 ), which rests with a stop, e.g. a flange ( 9, 20 ), a drawing force ( 14 ) serves to pretension. This results in the provision of self-tightening fastening device.</p> |
