| 摘要 |
A seat-bed unit is provided in which at each end, first and second arms are respectively pivotal on a first stationary axis close to a floor and a second stationary axis behind the first axis and preferably spaced upwardly from the floor. The rearward end of a seat frame and the lower end of a back frame are pivotally connected to each other and to the upper end of the first arm, while a connection is provided between the back frame and the upper end of the second arm, preferably including a short link which is pivotally connected at its forward end to the back frame and at its rearward end to the upper end of the second arm. Preferably, a second link is provided between intermediate portions of the first and second arms with stop pins on the first and second arms engagable with the second link. A third arm is preferably provided, connected to the seat frame in a manner to swing from a rearwardly and upwardly inclined position in a seating condition of the unit to a forwardly and upwardly inclined position in a bed condition of the unit.
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