| 摘要 |
A coupling arrangement comprising an inner (9) and an outer (12) coupling device and at least one protruding part (16) arranged on the tube section (14) of the outer coupling device (12). At least one hole (17) or a thin section (18) of wall, or both, is arranged in the part (10) of the inner coupling device (9). The protruding part (16) can be either introduced into the said hole (17) or caused to break the thin section (18) of wall, or both, in order to allow coupling of the outer coupling device (12) and the inner coupling device (9). |
