| 摘要 |
To increase the comfort of sofa-beds both in bed and seat positions, the intermediate and the deck section coverings (either textile fabric or link fabric) are anchored to fixed, transverse rigid members located at the rear (or head end) of the intermediate section and to the cavity (boxing) section. The intermediate and deck sections are independently supported so as to be stretched tight and firm in bed position and to be loose and flexible in seat position. In the seat position, both the intermediate and the deck sections are spring supported along the rear edge so as to give a soft spring support to a cushion supported from these sections. A textile flap sewn to the textile deck section and passing under a transverse deck reinforcing rod tends, in seat position, to pull the front edge of the deck section downwardly so as to flatten any bulge of the mattress so that the sofa seat cushions rest horizontal and any gaps between such cushions and the top of the front of the sofa frame are eliminated.
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