Movable belt-anchorage system

A movable anchorage system for a seat belt, having a lockable slide mechanism comprising

• a slide extending in a longitudinal direction of adjustment of the position of the anchorage device for the seat belt,
• a slider system comprising at least one body configured to move in translation along the slide while being guided by the slide, the body incorporating an anchorage device for the seat belt,
• an actuator configured to ensure the movement of the slider system along the slide, comprising an electric motor and a screw/nut system including a screw, extending along the longitudinal direction of the slide, driven to rotate by the electric motor, and a nut configured to drive the slider system when caused to move by the screw during its rotation,
• a mechanism for locking the position of the slider system in the slide, comprising:
• a first set of teeth integral with the slide, extending in the longitudinal direction of the slide,
• a second set of teeth integral with a locking member of the slider system, the locking member being movable relative to the body of the slider system from a locking position in which the second set of teeth is engaged with the first set of teeth, locking the movement of the slider system in the slide, and to an unlocked position in which the second set of teeth escapes the first set of teeth, freeing the slider system to slide in the slide, and
• a cam/cam follower system between the locking member and the nut, configured, when the nut is moved in a limited stroke along the slide, to move the locking member relative to the body from the locking position to the unlocked position by means of the work performed by the cam follower along the cam, before driving the body of the slider system incorporating the anchorage device along the slide.