| 摘要 |
The door (3) of a security enclosure has a primary lock (4) for locking the boltwork (1,2). A drill-resistant disc (11) is rotatably mounted between the lock and the exterior of the door, and the wire (12) of a relocker (14) passes over the circumference of the disc. If a drilling attack is made on the lock the disc (11) will be encountered and will be rotated by the drill tip to frustrate penetration of the disc by the drill. Furthermore, if the drill is aimed at the circumferential portion of the disc which guides the wire (12) any success in penetrating the disc will sever or dislodge the wire to allow the relocker (14) to move under the action of a spring (18) into a position in which it provides an additional locking action in the boltwork. |
