| 摘要 |
<p>A Security device locks having main 3, and restraint 6 bolts, comprises reversible means by which the shaft (13) of the internal actuator (5) is rotationally coupled to the shaft (14) of the restraint actuator (7), selectively transmitting the rotation from the former to the latter, comprising a driving disc (8) with driving feet applied to the two fronts (10a, 11a) of two transverse fins (10 and 11) mounted coaxially and jointly on the supporting tube (21) of the internal actuator (5), extending symmetrically and having thrust parts (10b,11b) capable of engaging the actuating part (12c) of a cam (12) rotationally integral with the shaft (14) of the restraint actuator (7) and capable of occupying two extreme angular operative positions which determine the extended and retracted states respectively of the restraining bolt (6). A magnetic card operated locking mechanism acts on the main bolt operation but other forms of electronic or key-operated locks can be used.</p> |
