Mailbox case closing system for use in building, has frame with anchoring edge sections presenting clearances and gates presenting locking edge sections with clearances, where one section is mobile with respect to support bearings

摘要

The system has a frame (9) with anchoring edge sections (21, 31, 41) presenting notched shape clearances (20, 30, 40) and gates (5, 6) presenting locking edge sections with clearances. One of the sections is mobile with respect to support bearings (18, 19) between locking and unlocking positions along a locking direction. The clearances occupy respective positions in the unlocking position, such that serrations (22, 32, 42) of one clearance traverse slots (24, 34, 44) of other clearances. An edge area of the serrations is arranged relative to an edge area of the slots in the locking position.