Quick coupling for fluid conduits

The quick coupler (1) has a connector (2) with a nozzle (3) and a connection line (4) projecting transverse from nozzle. The nozzle is inserted in a receiving opening (5) of a counter piece (6) and is brought into engagement with the counter piece by a locking device (7). The force (F1) to transfer the safety device (8) from the release position into the safety position is more than a force (F2) to bring the nozzle into engagement with the counter piece.