| 摘要 |
An articulating bed frame includes a main frame; a back section connected to the main frame by first and second linkage assemblies, each of the first and second linkage assemblies being pivotally connected at first and third ends to the back section and pivotally connected at opposing respective second and fourth ends to the main frame; an upper leg section connected to the main frame by a third linkage assembly and a support link assembly, the third linkage assembly being pivotally connected at opposing fifth and sixth ends to the upper leg section and the main frame, respectively, and the support link assembly being rigidly connected at a seventh end to the upper leg section and being slidably and pivotably connected at an opposing eighth end to the main frame; a seat section pivotally connected at opposing ends to the back section and the upper leg section; a lower leg section pivotally connected to the upper leg section and freely supported atop a forward end of the main frame; and, a drive assembly connected at first and second connection ends to and between the back section and the third linkage assembly, the drive assembly being operable to extend and retract to move the first and second connection ends away and toward each other.
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