| 摘要 |
<p>PURPOSE:To smoothly shift to a standing posture from a sitting posture, and also, to secure a stable sitting posture by constituting the bed of a four-folded type. CONSTITUTION:The bed is constituted so that a head side end part of a seat part frame 12 is attached pivotally to a foot side end part of a back part frame 11, the head side end part of the seat part frame 12 turns down ward as the back part frame 11 turns in the erecting direction, and the seat part frame 11 is inclined a little in a state that the lower leg frame 13 is erected.</p> |
