Vehicle seat comprising a force recovery system in the event of a collision

A vehicle seat comprising a seat cushion and a sliding rail, the sliding rail being connected to the seat cushion and being further intended to be connected to a floor of the vehicle, the seat cushion being movable in an elevation direction relative to the sliding rail,

• the seat further comprising an anchoring element for anchoring a safety belt in the seat cushion and a holding device for holding the seat cushion in the elevation direction,
• the holding device comprising a cam, a blocking element for blocking the position of the seat cushion with respect to the sliding rail, and a friction element fixed to the seat cushion,
• the blocking element being mounted so as to be movable at least in rotation about a first axis of rotation between a nominal position in which the blocking element is at a distance from the friction element and a blocking position in which the blocking element interacts with the friction element so as to prevent the movement of the seat cushion along the elevation direction,
• the cam resting on the blocking element and being mounted so as to be movable on the seat cushion between a rest position in which the blocking element is in its nominal position and an active position in which the cam causes the blocking element to move towards its blocking position,
• the cam being configured to be moved to the active position when a force greater than a predetermined force is applied to the anchoring element.