Locking apparatus for plug connectors

A locking apparatus for plug connectors, said plug connectors comprising

• at least one first locking half and at least one second locking half,
• wherein the first locking half is formed from an inner sleeve and an outer sleeve,
• wherein the second locking half is formed from a further sleeve, which can be inserted into the inner sleeve of the first locking half, and
• wherein the first locking half is associated with at least one detent, which acts on an inserted sleeve through at least one detent opening in the inner sleeve
• wherein the outer sleeve is linearly displaceable relative to the inner sleeve against a plug-in direction (S), and has wedge surfaces formed integrally on the inner side, wherein the wedge surfaces each are associated with one of the detents, and are arranged at an angle to the plug-in direction (S), selected from an angle of between 0 and 90 degrees to the plug-in direction (S), an angle between 20 and 60 degrees to the plug-in direction (S), and an angle between 30 and 50 degrees to the plug-in direction (S),
• wherein the detent substantially has a U-shape, which is formed from a first limb, a base and a second limb, wherein the first limb and the second limb are each connected to the base via a bent region,
• wherein the first limbs of at least two detents are each connected to a respective one of the second limbs of another detent, and
• wherein the first limbs of the at least two detents are each connected in one piece to a respective one of the second limbs of another detent, and the at least two detents are thus formed in one piece.