| 摘要 |
The housing (1) is divided in an insertion part for the accommodation of a tensioning element (2) and a support part (6) with a transversal opening (7) for the tightening bolt (4), both joined with a bridge (5) on top and provided with flexible projections (8) engaging with the upper layer of the sheet. After insertion the bolt (4) can be guided with is opposite end into a short folding sleeve (10) located at the sheet to be joined and tightened with a tool rotated in the tensioning element (2). |
