Abstract: The invention relates to a plug-and-socket connection device for the automatic, e.g. multipolar electrical connection of a vehicle trailer, particularly of a semitrailer, to a towing vehicle, particularly to a prime mover. The plug-and-socket connection device comprises a socket and a plug, which can be mounted on the vehicle trailer (e.g. the plug) or on the towing vehicle (e.g. the socket, they can be aligned with one another when coupling the vehicle trailer to the towing vehicle, and can be displaced while being guided by a drive provided in the form of an, e.g. piston/cylinder assembly relative to one another between an (advanced) connecting position and a (retracted) inoperative position.

Abstract: The invention relates to a plug-and-socket connection device for the automatic, e.g. multipolar electrical connection of a vehicle trailer, particularly of a semitrailer, to a towing vehicle, particularly to a prime mover. The plug-and-socket connection device comprises a socket (D) and a plug (S), which can be mounted on the vehicle trailer (e.g. the plug S) or on the towing vehicle (e.g. the socket D), they can be aligned with one another when coupling the vehicle trailer to the towing vehicle, and can be displaced while being guided by a drive (10) provided in the form of an, e.g. piston/cylinder assembly relative to one another between an (advanced) connecting position and a (retracted) inoperative position. Preferably, an e.g.

Abstract: A plug-in connection device for the self-actuating electrical connection of a motor vehicle trailer to a towing motor vehicle with a socket (D) and a plug (S), which can be disposed on the motor vehicle trailer (for example the plug S) or the towing motor vehicle (for example socket D) During the coupling of the motor vehicle trailer to the towing motor vehicle, socket (D) and plug (S) can be aligned with respect to one another and can be moved by means of a drive (10), developed for example as a piston-cylinder configuration, relative to one another between an advanced connection position and a retracted resting position. Preferably a cover (5) of the socket (D) can be opened by displacing the contact insert (1), bearing contact sleeves (11, 12), in the direction of the connection position with the aid of drive (10). When the contact insert (1) is retracted into the resting position, the cover can be closed again.

Abstract: The invention relates to a plug-in connection device for the self-actuating electric connection of a motor vehicle trailer to a towing motor vehicle with a socket (D) and a plug (S), which can be disposed on the motor vehicle trailer (for example the plug S) or the towing motor vehicle (for example socket D), during the coupling of the motor vehicle trailer to the towing motor vehicle can be aligned with respect to one another and can be moved by means of a drive (10), developed for example as a piston-cylinder configuration, relative to one another between an advanced connection position and a retracted resting position, wherein preferably a cover (5) of socket (D) can be opened by displacing the contact insert (1) included in it and bearing the contact sleeves (11, 12) in the direction of the connection position with the aid of drive (10) and, when the contact insert (1) is retracted into the resting position can be closed again, characterized in that the plug (S) is supported such that it is resiliently yi