| 摘要 |
PURPOSE: A foldable bed is provided to easily and automatically curving the side of bed frame when a patient is lying on an upper latex mattress on the bed frame. CONSTITUTION: A foldable bed comprises the following: an upper frame(110) installed on the upper side of the foldable bed; first and second middle frames(130,130`) located on one side of the upper frame; a lower frame(140) connected to the rear side of the second middle frame; a supporting stand installed on the lower center of the first middle frame; first and second cylinders crossing with each other; a hinge shaft installed on the end of a rod unit of the cylinders; and first and second curved rod installed on both sides of the hinge shaft.
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