Folding mechanism

A folding mechanism, comprising:

• a rail which forms a guide for a series of runners which are slideable in relation to each other on the rail, each of the runners or at least a part of each of the runners is provided with a rib which is hingeably attached on the respective runner around a shaft substantially perpendicular to the longitudinal direction of the rail between an open position in which the ribs are turned away from the rail and a closed position in which the ribs are turned towards the rail and at least some of the ribs located on the same side of the rail are connected with each other by a respective transmission which, when sliding the runners towards or away from each other on the rail, makes the ribs hinge on the runners, the transmissions keeping the ribs parallel to each other while opening and closing the folding mechanism, each of the transmissions being formed by an articulated connection connecting two of the ribs with each other via a hinge connection with each of the two ribs around the longitudinal axis of the two ribs, the articulated connection between the two ribs being provided with a central articulation with a shaft that runs parallel with the two ribs, the articulated connection containing two articulated parts with the central articulation, the shaft of the central articulation running parallel with shafts of the hinge connections with the ribs, the two articulated parts being two slats which are connected with each other at one end by said central articulation, the shaft of the central articulation being positioned at an angle in relation to the longitudinal direction of the slats, the two slats being provided with a respective hinge connection with the ribs on another end of the two slats, the hinge connections with the shafts running parallel with and at the same orthogonal distance from the shaft of the central articulation.