Locking/unlocking device with improved tamper resistance

摘要

The device (1) has a bolt (11) mounted slidingly in a housing (12) between a locking position and an unlocking position of an opening (6). An elastic return unit (13) is formed by a spring (27), and forces the bolt in the locking position. A detachable safety key (5) comprises a latch (41) located at a free end (30) of a rod (29). The latch comprises a throat (31) for bearing on a projecting edge (14) to guide the detachable safety key through the edge during its rotation for displacing the bolt in the unlocking position.