| 摘要 |
A device for locking a sash frame in its closed position has a first locking element 5 displaceably mounted to frame 1 and a second locking element 6 rigidly fastened to frame 2, the first element 5 being axially displaced in order to couple with the second locking element 6. The first locking element 5 is provided with three projections 7, 8, 9 and two depressions 17, 18, which respectively engage with three depressions 10, 11, 12 and two projections 19, 20 provided on the second locking element 6, locking the frames in a closed position against unauthorised access. <IMAGE> |
