WINDER HOLDER FOR REAR SEATBELT COMPRISING A SHELF WITH ADDED REINFORCEMENT

Support for a rear seat belt retractor of a motor vehicle, comprising a plate (12) formed by a sheet metal elongated in the longitudinal direction of the vehicle, intended to be disposed substantially horizontally in this vehicle, comprising an outer lateral fold (14) intended to be fixed on a trim sheet of the vehicle body window frame, a rear part (20) intended to be fixed on a rear pillar of this body, and fixing holes for the retractor, characterized in that it comprises an added reinforcement (60) which is fixed on the plate (12).