| 摘要 |
<p>A driving device for a footrest pedestal is mounted between a frame (3) and a footrest (2) on the frame (3) and has a driver body (11) with two ends respectively equipped with a retractable driving shaft (111) and the pivotal block (112), a motor (113) mounted beside the driver body (11), and an auxiliary pivotal base mounted on the frame (3) to combine with the pivotal block (112). The auxiliary pivotal base has a movable connector (12) engaged with the pivotal block (112), an immovable connector (14) mounted on the frame (3) and an extension rod (13) pivotally connected between the movable and immovable connectors (12, 14) so that the extension rod (13) is liftable to adjust the distance of a lower end of the driver body (11) and an end of the driving shaft (111) to keep the driving shaft (111) retracting thus to avoid motor idle running.</p> |
