| 摘要 |
A neck rest retraction device comprises a neck rest rod having stop notches engageable with a locking member, and an elongated actuator having a plurality of detent recesses formed thereon to be engaged with a detent member carried by an lower end of the neck rest rod. The gauge of the detent recesses corresponds to that of the stop notches. An original position of the neck rest rod, defined by engagement of the locking member with one of the stop notches, is thus memorized by engagement of the detent member with the corresponding detent recess when the actuator is forced to move downwardly. The original position of the neck rest rod is automatically restored in accordance with disengagement of the detent member from the corresponding detent recess when the actuator is released to move upwardly. |
