| 摘要 |
<p>A power operating system for opening and closing a vehicle liftgate (12) has a pair of drive units (22) supported on the vehicle roof and connected to the liftgate for opening and closing the liftgate. Each drive unit (22) includes a bracket (24) that is secured to the vehicle body for supporting several parts including a reversible electric motor (26), a gear unit and a track (30). The electric motor (26) drives a segmented sector (60) inside the track (30) via a pinion gear (28). The segmented sector (60) includes an elongated, arcuate toothless push link (62) that is guided by an arcuate track portion of the track and a plurality of short drive links (64) that are driven by the pinion gear (28) and stored in a storage track portion (54) when the liftgate (12) is closed. The pusher link (62) has an outboard end that is pivotally connected to the liftgate (12) to open and close the liftgate as the push link (62) is extended and retracted by the drive links (64).</p> |
