LOCKING DEVICE FOR A PLUG-IN CONNECTION

The invention relates to a locking device for a plug-in connection between a plug and a socket. In accordance with the invention an actuator (4) and a blocking slide (6) are provided, wherein the actuator (4) is rotatable about an axis of rotation, the blocking slide (6) is displaceable in the longitudinal direction thereof between an unlocking position and a locking position, and the actuator (4) and the blocking slide (6) are formed in such a way and interact with each other such that a rotation of the actuator (4) is always combined with a longitudinal displacement of the blocking slide (6) and vice versa, wherein a longitudinal displacement of the blocking slide (6) by means of a rotation of the actuator (4) is always possible, whereas a rotation of the actuator (4) by means of a longitudinal displacement of the blocking slide (6) is possible only outside the locking position. A locking device of this type for a plug-in connection between a plug and a socket is thus provided, which enables simple and economical axial locking, which cannot be manipulated.