| 摘要 |
<p>The adjustable back rest hinged fitment for a vehicle, consists of one section (11) fixed to the seat, and a movable section (10) fixed to the back rest, and joined together by an axle (15). The movable hinge section (10) has an inner cogged wheel, and the other hinged section (11) a spur wheel (13). At least three locking pieces (28) are evenly distributed around the axle (15). Each locking piece (28) operates, independently of the others, a radial movement between the pivot axle of the inner cogged wheel (12) and that of the sour wheel (13).</p> |
