| 摘要 |
A four-section rise-over sofa bed fixture, the four sections being designated the head section, the body section, the intermediate section, and the foot section, having at each side thereof a first arm pivoted for swinging movement in the sofa frame toward the rear thereof, a head section support link interconnecting the first arm and the rearward end of the body section, a second arm pivoted for swinging movement in the sofa frame toward the front thereof, a bellcrank pivoted on the side of the body section, a lever pivoted intermediate its ends at the upper end of the second arm and having its rear and front ends connected, respectively, to the head section support link and one end of the bellcrank, a folding leg at the outer end of the body section, a link connecting the other end of the bellcrank and the folding leg, and a linkage interconnecting the first arm and the bellcrank comprising a crank arm pivoted on the side of the body section, a link interconnecting the first arm and the crank arm, and a link interconnecting the crank arm and the bellcrank.
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