Patent ID: 7036885
Filing Date: 2006-05-02
Classification: B60N

Abstract:
1. A motor vehicle seat comprising: at least one runner comprising a fixed rail, a moving rail, and a locking device mounted to move between a rest position in which the locking device normally prevents the moving rail from moving relative to the fixed rail, and an actuating position in which said locking device enables the moving rail to move relative to the fixed rail; a seat proper connected to the moving rail of the runner; a seat back mounted to pivot relative to the seat proper about a transverse pivot axis between an upstanding in-use position and a tilted-forwards position; and a transmission device which connects the seat back to the locking device of the runner for moving the locking device into its actuating position when the seat back is placed in its tilted-forwards position; wherein the transmission device comprises: at least one cable that extends between a first end mounted on the locking device and a second end; a drive mechanism connected mechanically to the seat back so as to be moved when the seat back moves between the upstanding in-use position and the tilted-forwards position, said drive mechanism including at least an abutment element; at least a spring connected to the second end of the cable independently of the seat back, said spring being adapted to displace said cable with said locking device up to the actuating position of the locking device, said spring cooperating with said abutment element of the drive mechanism to prestress said spring and maintain said spring and said cable in a first position corresponding to the rest position of the locking device while the seat back is in the upstanding position, so that, while the seat back is being brought from the upstanding position to the tilted-forwards position, said abutment element moves firstly over a first stroke during which the spring is in contact with said abutment element and the locking device is moved towards the actuating position under the effect of the traction from the spring, and then over a second stroke during which the abutment element continues to move on its own, without being in contact with the spring so as to enable the seat back to be tilted to the tilted-forwards position, the spring then holding the locking device in the actuating position.