| 摘要 |
The element (1) has a fixed upright window frame element (2) and a window sash element (3) formed from a window frame profile (5) and a window sash profile (4). A drive has a drive unit formed from a drive motor and a drive wheel i.e. toothed washer. A belt i.e. toothed belt, is guided over the wheel and guide rollers. The drive unit is adjusted by a tensioning device for tensioning the belt along a longitudinal direction of the sash profile or the frame profile. The drive unit is fixable at or in the frame profile or the sash profile in a form-fit and force-sit manner. |
