| 摘要 |
<p>PROBLEM TO BE SOLVED: To steplessly move and control a bend of a curved bottom arranged at a position corresponding to e.g. knee joints of a bottom of a bed, etc., by fitting it to the physique of a user. SOLUTION: A knee bottom 1a and a leg bottom 1b are connected with each other through a curved bottom 2 and a stepless bending position controlling mechanism 3 for moving in the longer direction of a bottom and controlling the bending position of the curved bottom 2 are provided on the underside of the curved bottom 2. This controlling mechanism 3 freely movably back and forth holds a knee side slide fitment 6 from the knee bottom 1a side and a leg side slide fitment 7 from the leg bottom 1b side on guide frames 4 and 5 provided in parallel along the longer direction of the bottom on the knee bottom 1a and the leg bottom 1b adjoining to the curved bottom 2. These knee side slide fitment 6 and leg side slide fitment 7 are connected with each other so as to be bent and a restraining means 8 for restraining and freely movably releasing to the guide frames 4 and 5 is provided on the leg side slide fitment 7 side.</p> |
