| 摘要 |
A base frame is provided as well as a seat support and a seat back support. Mounting structure supports the supports from the frame for movement between first seat defining positions and second bed defining positions. The seat support is horizontally disposed and projects slightly forward of a forward marginal portion of the base frame when in the seat defining position and projects further forward from the base frame when in the bed defining position. The seat back support is disposed in horizontal position immediately rearward of the seat support when in the bed defining position and is disposed in an upstanding position spaced above and projecting upwardly from rear marginal portion of the seat support when in the seat defining position. The seat back support is mounted from the base frame through the utilization of lazy tong linkages and the seat support is mounted from the base frame through the utilization of rear marginal edge supported depending brackets pivotally mounted from front to rear shiftable followers mounted from the base frame and to which the lazy tong linkages are also supported.
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