Security lock with increased resistance to unauthorised opening

摘要

The security lock (10) is proof against unauthorised opening. It has a hollow cylindrical lock housing (1) with an internal cylinder (2) and a number of tumblers (5) actuated by a key, which allows the inner cylinder to rotate about its axis. The unit has a device (4) to block the rotary movement of the inner cylinder, and mounting devices (5C) in the tumblers onto which the blocking device is mounted.