| 摘要 |
<p>The invention relates to an adjustable mechanical device for closing and opening doors, intended for maximal burglary-proofing thereof. According to the invention, the device comprises an outer cylinder (1) including an inner cylinder (2) to accommodate a key (3) wherethrough a rod (4) passes, the cylinders (1 and 2) and the key (3) exhibiting corresponding transverse orifices (a and b) arranged on four opposing rows, so that the orifices (a) of the outer cylinder (1) contain some active pins (15), some safety pins (16) and some springs (9), while the inner cylinder (2), coupled by means of a cover (5) and a blade (6) to the latch of a lock, has the orifices (b) which contain some active pins (19) and some safety pins (20), the key (3) containing some buttons (21) with vertically sliding axles, where, upon pressing the spring (9), the pin (15) is pushed into the orifice (b) of the cylinder (2) to lock it, so that the pressing of the rod (4) pushes the axle of the button (21) which pushes the pin (19) and the pin (15) which comes out from the orifice (b) of the cylinder (2) to unlock it, a false key pushes a pin (23) into the orifice (a) of the outer cylinder (1) locking the device, for the device operation there being required the pieces arrangement within the device, so as to achieve locking according to the combination selected from a huge number of combinations of the device, the alternating pressure exerted by the springs (9) and the rod (4) on the active pins (15, 19) ensuring the device closing and opening.</p> |
