Modular folding/sliding latch system with self-locking and multi-functional operation

A modular folding/sliding latch system with self-locking and multi-functional operation, for any type of access-control lock, from simple door retainers to mechanical, electrical and/or panic locks. The inventive system offers substantial advantages, namely: modular design, simple assembly, reduced size and easy installation. The structure comprises a frame or casing (60), and the tilting latch (5″) and the sliding shoe (62) are guided between the lateral walls of said frame. The transverse shafts of the latch and shoe move in respective grooves (58, 59), i.e., a longitudinal groove (58) for the shoe (62), and a curved groove (59) used to retract the latch (5″) when the system is being closed, and to retract same when the angle of rotation of the upper shaft is varied when the system is being opened, prior to releasing the lock. The latch (5″) is crenellated and the strike (68) comprises a corresponding anti-lever recess (69).