| 摘要 |
<p>A head restraint stem locking mechanism has an escutcheon 10 having a bore receiving a stem 12, a locking member 16 with a catch portion 25 and an actuator 26. Locking member 16 is movable between an unlocked position, where stem 12 is axially movable, and a locked position, where catch portion 25 engages a notch 14 in stem 12. Locking member 16 is resiliently biased towards the locked position. Actuator 26 operates to cause catch portion 25 to move substantially perpendicularly to stem 12. Actuator 26 may move parallel to stem 12 and may be an annular cap-shaped button surrounding stem 12; alternatively actuator 26 may be a knob rotatable about stem 12. A guide prong 36, 38 may extend from actuator 26 through a recess 18, 20 in escutcheon 10 to move a lever 22 engaging locking member 16. The mechanism reduces play and is operable without tools.</p> |
