Free-pivoting device for the backrest of a vehicle seat

摘要

In a free-pivoting device provided for the backrest 1 of a vehicle seat, in particular of a motor vehicle seat, a contact pressure device 21 is provided which keeps the movable locking element 5 of the free-pivoting device in engagement with an associated blocking toothing 15 free of play. The contact pressure device 21 has a blocking lever 27 which is mounted for a limited pivoting movement in such a way that in its effective securing position it is located in an over-centre pivot position. As a result, not only is the blocking effect of the blocking lever 27 amplified as a result of the acting loading forces but it is also ensured that the blocking lever 27 can be moved easily and conveniently out of the securing position into the release position independently of the size of the load because the blocking lever 27 executes here a rolling movement over the central pivot position on the blocking face 29 which interacts with it. <IMAGE>