Abstract: A coupling part (1) for a fluid line coupling is provided with a locking element for locking in place a plug-in part that is to be introduced into the coupling (1), and with a checking element (8) to verify proper locking of the plug-in part. The checking element (8) is equipped with axially flexible spring arms (11, 12), which comprise an engagement structure (14, 15) devised to engage with a latching structure (15), and which, in a first checking position, block the checking element (8) from shifting into a second checking position if the plug-in part is not properly locked. After the second checking position has been assumed, as a result of the actuation by the plug-in part of an actuating structure formed on each spring arm (11, 12), the checking element (8) is out of engagement with the plug-in part, and it is therefore possible to remove the plug-in part from the coupling part in the second checking position of the checking part (8), as well, by actuating the locking element (5).

Abstract: A coupling part (1) for a fluid line coupling is provided with a locking element for locking in place a plug-in part that is to be introduced into the coupling (1), and with a checking element (8) to verify proper locking of the plug-in part. The checking element (8) is equipped with axially flexible spring arms (11, 12), which comprise an engagement structure (14, 15) devised to engage with a latching structure (15), and which, in a first checking position, block the checking element (8) from shifting into a second checking position if the plug-in part is not properly locked. After the second checking position has been assumed, as a result of the actuation by the plug-in part of an actuating structure formed on each spring arm (11, 12), the checking element (8) is out of engagement with the plug-in part, and it is therefore possible to remove the plug-in part from the coupling part in the second checking position of the checking part (8), as well, by actuating the locking element (5).

Abstract: The invention relates to a fluid line coupling and comprises a receiving part (1) as well as a fixing assembly (15) for the fixation of an insertion part (10). The fixing assembly has a retaining part (17) which is, in a steady state, located in the receiving space (4) of the receiving part (1) and is equipped with pivotable support wings (22, 23) engaging behind the existing front coil (14) which is located on the insertion part (10). Said fixing assembly also features a locking element (16) which is movably connected to the retaining part (17) and has, along with the receiving part (1), elements of a blocking assembly which impede the movement of the locking element (16) from an extended to a retracted position, if the insertion part (10) is not positioned accordingly. Thus, an easily attainable and stable fixation of the insertion part (10) in the receiving part (1) is achieved.