| 摘要 |
A device for protecting a mortise lock (1) with a closing cylinder (4) has an outer breach-proof cover (6) which encloses the projecting end of the closing cylinder (4) at the outer side of the door (2). The outer cover (6) is slipped on a sliding plate (7) joined to a holding plate (8) that protects the mortise lock (1) against breaches by drilling. |
