| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the knee part of a user from bending when the erecting operation of a back plate is ended. <P>SOLUTION: A bed device is provided with a knee raising mechanism for erecting a pair of knee bottoms hinge-connected so as to be roughly flat with each other at the time of being laid down from a bed frame and forming the knee bottoms into a roughly chevron shape and a back raising mechanism for erecting the back plate from the bed frame, and the knee raising mechanism is operated in synchronism with the back raising mechanism. In the bed device, the knee raising mechanism is constituted of a cyclically rotated cam member and a lever whose one end part receives rotational force from the cam member and other end part erects one of the knee bottom and lays it down again during one rotation of the cam member. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
