| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electric bed surely returning a leg bottom to a last adjusted position after adjusting the angle of the leg bottom once even if raising or lowering the leg bottom and never changing the setting angle of the leg bottom till executing a next adjusting operation. <P>SOLUTION: The tip part of the leg bottom 23 is connected to a stay 27 and the stay 27 is further connected to a bed frame 2, so that the tip of the leg bottom 23 is rotated using the stay 27 as a rotation radius by the rotational turning of a knee bottom 22. When the length of the stay 27 is long, the leg bottom 23 is raised and lowered constantly retaining the horizontal state. When it is short, the leg bottom 23 is raised/lowered with its tip inclined lower than the end part of the knee bottom 22. Therefore, when the length of the stay 27 is long, the leg bottom 23 is raised/lowered retaining the horizontal state, while the length of the stay 27 is short, the leg bottom 23 is raised/lowered forming a crest shape between itself and the knee bottom 22. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
