Lock with lock case

摘要

The lock has a bolt (2) and tumblers (5) each containing a locking duct (5b). One lengthwise edge of the bolt has a nominal fracture point (9) in the form of a stepped ledge near the bolt's closure duct. The lock case (1) contains a thrust piece (11) for restricting the deformation of the bolt near the nominal fracture point. A cavity in a continuation of the closure duct forms a nominal fracture point and a folding part near the ledge which is Z-shaped with an incision running diagonally from outside to the closure duct. Several guides (3) run along the bolt's lengthwise edge. The turning pin (4) is T-shaped with the cross-bar (4a) near the inside of the lock case when the bolt is closed.