| 摘要 |
Electrically driven operating device for a movable element (3), for example for a window pane of a motor-vehicle door, with an electric motor (10) of reversible direction of rotation, the rotor (13, 14, 17) of which is designed as a hollow shaft (18) and is connected fixedly in terms of rotation to a nut (44) which is mounted in a housing (31, 49), there being provided a flexible screw (6), the end of which is connected to the element (3) to be moved and which is guided through the hollow shaft (18) and the internal thread of the nut (44), and there being provided at least one reaction element (42, 48) intended for the axial support of the nut (44) and comprising two annular discs (42, 48) which are arranged on both sides of the nut (44), and the nut (44) consisting of a material with a low coefficient of friction and having, at each of its axial ends, a circular bead (46, 47) which is coaxial with the nut (44) and which is supported on the annular discs (42, 48). …<IMAGE>… |
