| 摘要 |
A driving device (20) for a sliding wing (2) of a sliding window (1) or a sliding door, comprising a screw (24) rotatably mounted in stationary bearings (26, 27) and driven by a motor (22), a screw nut (28) being axially displaceably arranged on the screw and non-rotationally retained by a stationary guide, and being in drive connection with the sliding wing (2), e.g. via a catch (29), wherein at least one movable bearing element (34, 35) is arranged between the stationary bearings (26, 27), which is axially freely movable along the screw (24) and non-rotationally retained, the at least one movable bearing element being jointly movable by the screw nut (28) during displacement of the latter.
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