| 摘要 |
A lightweight multi-passenger seating unit (10) utilizes an elongate, generally S-shaped, composite frame panel (12) to provide the sole support for the seat cushions (48), the seat back (40), seat belt anchors (32) and armrests (38). Front legs (20) and rear legs (28) made of thin sheet metal can be attached directly to the panel (12) by bolts (18, 24) passing through the panel (12). A downwardly projecting front portion of the panel (12) and an upwardly projecting rear portion, in cooperation with channel-shaped members (16, 34) bonded to the panel's peripheral edges, enhance the rigidity of the panel. The composite panel (12) has a honeycomb core faced with top and bottom skin surfaces formed of continuous layers of resin-impregnated fibrous material such as graphite fibres, with additional swatches of such material (14) overlying and integrally bonded into the skin. The seat back (40) is doubly curved to provide lumbar and shoulder support and good comfort with a thin constant thickness rear pad. The seating unit (10) allows spacing between seat rows to be determined virtually solely by the dimensions of the occupants. |
