| 摘要 |
The present invention concerns a linear actuator (1), comprising a threaded spindle (10) with a longitudinal extension along a longitudinal axis (X), the spindle (10) having a right hand thread (11) and a left hand thread (12), both threads provided over a common longitudinal length of the spindle, the spindle (10) being adapted to be rotated by a driving device (60). The linear actuator further comprises a first nut member (20) provided with a right hand thread (21) and a second nut member (30) provided with a left hand thread (31). The first and the second nut members (20, 30) are in threaded connection with the spindle (10) in such a way that rotation of the spindle provides opposite linear movement of the nut members (20, 30) relative to each other along the longitudinal axis (X). Thereby, a linear actuator is provided with three parts that all move linearly relative to each other during rotation of the spindle. |
