Abstract: In a device for connecting a longitudinal beam (1) of a vehicle seat, especially a motor vehicle seat, to the vehicle structure (2) in a positively engaging manner both in the longitudinal direction of the seat and in the vertical direction, with a throat (7), which is provided on the longitudinal beam and is open toward the bottom and is intended to hold a bolt (5), which is provided on the vehicle structure (2), and a hook (9), which in its locking position reaches from the top behind the bolt (5) received by the throat (5), the hook (9) has a locking device (10, 13), which in its locking position holds the hook (9) in its release position. The locking device (10, 13) exhibits a releasing element (13), which can be moved by the bolt (5), entering into the throat (7), into a position, in which the locking device (10, 13) releases the hook (9).