| 摘要 |
The invention relates to a power steering assembly for a hydraulic power steering of motor vehicles, comprising at least one hydraulic servo valve having a control member (3) for controlling the steering assistance depending on a relative rotation of an input shaft with respect to an output shaft (2), and at least one actuator (9) for relative adjustment of the control member (3) with respect to the input shaft or the output shaft (2) in order to influence the steering assistance characteristic. In addition, the power steering assembly comprises a summation gear having a first rotatable drive member (4) that is in functional engagement with the control member (3), and a second rotatable drive member (5) that is in functional engagement with an output element (8) of the actuator (9), as well as an output member (6). The summation gear overlays a rotation of the first drive member (4) with a rotation of the second drive member (5) and drives, via the output member (6), an epicyclic gearing comprising at least one planetary gear (11), which is in functional engagement together with both the input shaft or output shaft (2) and with the control member (3) and can be rotated both about a planetary axis (14) fixed with respect to the frame and also about a distinct axis of rotation (12) rotating about the planetary axis (14), in such a way that a rotation of the first drive member (4) causes a rotation of the axis of rotation (12) of the planetary gear (11) about the planetary axis (14) in such a way that no rotation of the planetary gear (11) occurs about the axis of rotation (12) thereof, a rotation of the second drive member (5) against a rotation of the planetary gear (11) about the axis of rotation (12) thereof is produced, wherein the rotation of the planetary gear (11) about the axis of rotation (12) thereof causes a relative rotation of the input shaft or output shaft (2) with respect to the adjustment member (3). |
