| 摘要 |
This security door construction is applicable to safes, factory doors and house doors. An offset hinge assembly allows the door to swing open and closed and also to slide in and out of a door slot in the door frame at the closing edge of the door. In the construction of a safe, hooks on the inside of the door enter slots in upstands inside the safe and engage and disengage through the sliding motion. One pair of hinges is fixed to the frame and the second pair of hinges is fixed to the door. The frame and door pairs are connected by a rod or tube which ensures that the hinge axis of the door pair remains parallel to the hinge axis of the frame pair. A handwheel is mounted on the door which turns a crank between stops and a link reacts against the rod causing the door to slide easily to LEFT or RIGHT. A spring overcomes resistance to initial movement. |
