| 摘要 |
The opening mechanism for the knock-out window (10) has at least four arms (16) gripping a window casement (12) and fixed to a window frame (14). The opening drive (20) comprises at least one shaft (18). One end of the arms is fixed to the shaft, and in the other end part the arms are rotarily and movably mounted in the window casement. The lock (22) comprises at least one first locking element in the form of a pin and fixed to the shafts. The first locking element fits into a second locking element in the form of a cavity fixed to the window casement. |
