| 摘要 |
PURPOSE: A bed back angle adjusting device set is provided, which can automatically control by connecting a piston rod to a crank by a connecting member. CONSTITUTION: A bed back angle adjusting device set comprises: a power source(14) which is fixed in the sub-frame of the bed and controls the bed back using power; a piston rod(16) which is manufactured in order to move forward and backward by the power of the power source; a connecting member(18) for transferring forward and backward movement of the piston rod to the crank; an operation button for controlling forward and backward movement of the piston rod; and a crank(19) diversifying angle of the bed back.
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