| 摘要 |
The present invention relates to a burglar-proof device for the protection and operation of security locks designed to be operated by a standard European type cylinder. Such burglar-proof device comprises a protective outer shell (3) that contains the cylinder (7), with its key (8), and a switch (12) whose function is to connect the rotor of the cylinder to the shaft (1). The shaft (1), free to rotate in respect to the outer shell, having on one end ( A) the axial bond ( 2) and on the other end ( B) the thread (4), completed with the related nut blocking system (5) and a flange plate (10). The parts composing the protective outer shell (3) are fastened together by a proper elastic ring (14) placed in their respective circumferential grooves (15) and (16). A cam (6), and a knob (13,) are also placed on the shaft (1). An anti- rotation pin (9) is placed within the perimeter of the proper lock seat where a standard European type cylinder is accommodated in the present art. This invention overcomes the present art by introducing an innovative system of fastening, connection and transmission between the outer shell, the cylinder and the lock, consisting of a shaft having the dual function of transmitting the rotary motion from the cylinder to the lock and also to prevent the forced extraction of the whole shell- cylinder from the lock itself.The concentration in the shaft of both functions allows to add to the protective shell a fastening component with higher mechanical properties in respect to the present art. |
