Patent ID: 7021669

Claim:
A coupling part for a fluid coupling device, the coupling part being connectable and releasable in an axial direction with a corresponding part of a hose coupling, the coupling part comprising: a switchable locking device for locking the coupling part to a corresponding hose coupling part in a coupling position in an extraction-prevented manner; the locking device comprising at least one locking element comprising a resilient insert body having a cam section actable on a corresponding hose coupling part, and an actuating element cooperating with the locking element, wherein coupling of the coupling part to a corresponding hose coupling part is achieved by axial movement of the coupling part and the hose coupling part together to a retaining position, wherein the actuating element is moveable in the axial direction between the retaining position and a release position such that the locking device is switched between a locking configuration and a release configuration, wherein the resilient insert body can be blocked in a locking position preventing release of the coupling parts from the locking configuration by an additional movement of the actuating element, and wherein the actuating element or a main body of the coupling part has at least one substantially L-shaped recess, in which a leg at right angles to the release direction forms a stop and a portion in the release direction forms a linear guide for a counterelement of the main body or actuating element.