| 摘要 |
The invention relates to an electromotive linear drive, in particular for adjusting movably mounted parts of lounging and seating furniture, having a drive motor, a threaded spindle (3), a speed-reducing gear unit (2) arranged between the drive motor and the threaded spindle (3), and a spindle nut (9) located on the threaded spindle (3), said spindle nut being optionally lockable in the direction of rotation and movable in the axial direction of the threaded spindle (3) depending on the direction of rotation of the threaded spindle (3), and a lifting element (5), which can be driven by the axial movement of the spindle nut (9) to adjust the movable furniture parts. Such a linear drive should have a simple design, be easy to assemble and operate, and guarantee a robust mounting arrangement for the drive parts. This is achieved in that the drive wheel of the speed-reducing gear unit (2) is firmly connected to the threaded spindle (3), that a coupling element (14) which is supported on the gear unit housing (1) and interacts with the spindle nut (9) is provided, that the spindle nut (9) is provided at its circumferential region with at least two stop faces (16) which point in opposing circumferential directions, that the coupling element (14) can be moved towards and away from the circumferential region of the spindle nut (9), wherein in the coupled state, it interacts with the stop faces (16) of the spindle nut (9), and that the coupling element (14) is designed as a strip and extends along the entire stroke length of the spindle nut. |
