| 摘要 |
The window (1) has a dwell pressure device (2) including pre-stressed spring elements (22, 23) i.e. tensioned springs, for automatic dwell pressurizing a window sash that includes a coupling unit. The window sash is detachably coupled with another window sash by the coupling unit, and the dwell pressure device includes a controlling device (13) for adjusting the spring tension of the spring elements to avoid upward movement of the window sash. The dwell pressure device is adjustable in height, and includes frames (3) that are operatively connected with the spring elements. |
