| 摘要 |
<p>The backrest (2) of the seat is detachably mounted by at least one insert tab (7,8), at the bottom fitting into at least one opening (5,6) at the back (3) of the seat. It can be swivelled back into a sleeping position away from the seat to increase the joining angle between seat and backrest. The rear defining web (14) of the insert openings forms a swivel axis (13) which when the backrest is swivelled back is biased by a hollow throat (12) on the tab. The seat and backrest parts can be made from plastics. The seat can be used without backrest if required.</p> |
