| 摘要 |
<p>A sleeper sofa (10) incorporating an air mattress (40) including a telescoping mattress frame for supporting a mattress support subassembly consisting of hinge panels (31). The hinges (150) used to connect the panels limit the range of motion of adjacent panels (31) to plus or minus 90° from a coplanar arrangement. The panel (34) that defines the seating surface may be supported in the seating position by a pair of side rails (39a, 39b) that lack significant structure in the seating plane. This panel (34) may also include a set of sinuous springs (136) clad in padding. The air mattress (40) used in the sleeper sofa can be a multi-chamber design in which the outer edges (43a, 43b) are inflated to a higher pressure to prevent the user from rolling off the edge. The mattress may also include a longitudinal divider portion (49) inflated to a higher pressure, between individually pressure controlled sleeping portions (45a, 45b) to prevent one user from rolling from a high pressure sleeping area to an adjacent low pressure sleeping area. The mattress may also include a cover (51) with internally attached elastomeric straps used to assist mattress deflation in specific areas of the mattress such as the foot end.</p> |
