| 摘要 |
<p>Seat positioning mechanism comprising a pair of elongated members slidably connected for telescopic movement between extended and retracted positions with respect to each other. One of the members carries friction lock means movable between a lock position on frictional engagement with the other member to frictionally restrain the members in any selected position between the extended and retracted positions against relative movement with respect to each other, and an unlock position to permit free relative movement of the members. The friction lock means is interconnected with the other member by locking and biasing means including a return spring and a plunger. The plunger has a base with arm means projecting therefrom, the base extending transversely of the longitudinal axis of the members and engaging the friction lock means on one side thereof, while the arm means extends from the base to the opposite side of the friction lock means. The return spring is connected between the other member and the end of the arm means opposite the base to resiliently urge the members toward the retracted position and the friction lock means toward its locked position.</p> |
