| 摘要 |
The invention relates to a plug-in connection (1) for fluid lines, comprising two plug-together coupling parts (2, 3), which, in the plugged-in state, can be arrested in a releasable manner via a locking device (4), which consists, on the one hand, of two outer, radially projecting retaining crosspieces (21, 31) of the two coupling parts (2, 3), said retaining crosspieces, in the plugged-in state, being adjacent axially (X-X), as seen in the plug-in direction (S), and, on the other hand, of a retaining part (5), which, in a pre-installation state, can be fitted in an axially and radially fixed manner on one of the two coupling parts (3) and, in the installation state, engages axially and radially around the retaining crosspieces (21, 31) of the two coupling parts (2, 3) by way of at least one radially elastically movable retaining portion (53), which has two collars (51, 52) and is in particular C-shaped, as seen in axial section. In order to ensure that the retaining part (5) is held captive and to minimize the amount of space required, in particular for removal purposes, it is proposed that the collars (51, 52) of the retaining part (5) should be designed to be differently sized and/or shaped such that, when the retaining portion (53) moves radially elastically outwards from the installation state, a first collar (52), which, in the installation state, butts against the retaining crosspiece (21) of the one coupling part (2), releases said retaining crosspiece (21) of the coupling part (2), while the other, second collar (51) engages, at least in part, behind the retaining crosspiece (31) of the other coupling part (3), against which it butts. |
