Blocking device for sliding-lifting roofs for automobile

A blocking device for sliding-lifting roofs for roof openings of automobiles, the roof comprising a rigid sliding lid which is guided with forward and rear guide shoes on guide rails fixed laterally to the roof opening, the roof is connected in the rear region to pivoting-out elements and is pivotally journalled by pivot bearings mounted on the forward guide shoes about a horizontal axis extending transversely to the direction of sliding, blocking elements, disposed on at least one side of the sliding lid (3), comprising a control rod (69) fixed to the rear guide shoe (24) and slidably guided on the adjacent forward guide shoe (23), a detent element (70) actuated by the control rod (69), and a detent recess (71) on a guide rail outer frame (4) receiving the detent element (70) in a tilted position of the roof, the detent element (70) is attached to the forward guide shoe (23) and is continually biased by a spring (72) in the direction of moving out of the detent recess (71).