PROBLEM TO BE SOLVED: To provide a vehicle body frame for a wheelchair, capable of tilting and being collapsible in a compact manner.SOLUTION: A vehicle body frame for a wheelchair includes: a pair of link plates 10 disposed so that first to third connecting points 11, 12, 13 are positioned at the apexes of a triangle a pair of front leg frames 20, each one end of which is pivoted on the first connecting point 11 a pair of rear leg frames 30, each one end of which is pivoted on the second connecting point 12 a seat frame 40, a connecting part 421 of which is provided above the seating surface and pivoted on the third connecting point 13 a back frame 50 connected to the rear end of the seat frame 40 a pair of link bars 60, the respective one ends of which are pivoted on the intermediate parts of the front leg frames 20, with the other ends pivoted on the upper end parts of the rear leg frames 30 a pair of folding bars 70, which can be bent upward at the middle with both ends thereof pivoted on the intermediate parts of the front leg frames 20 and the rear leg frames 30 a cross member 80 stretched between the middle parts of the right and left front leg frames 20 and an elastic member 90, one end of which is pivoted on the intermediate part of the cross member 80, with the other end pivoted on the rear end part of the seat frame 40.COPYRIGHT: (C)2014,JPO&INPIT【課題】チルト可能であり、コンパクトに折り畳める車いす用車体フレームを提供する。【解決手段】第1~第3連結点11,12,13が三角形の頂点となる位置に配設された一対のリンクプレート10と、一端が第1連結点11に枢支された一対の前脚フレーム20と、一端が第2連結点12に枢支された一対の後脚フレーム30と、座面上方に設けられた連結部421が第3連結点13に枢支された座フレーム40と、座フレーム40の後端に接続された背フレーム50と、一端が前脚フレーム20の中間部に他端が後脚フレーム30の上端部に枢支された一対のリンクバー60と、両端が前脚フレーム20と後脚フレーム30の中間部に枢支され中間が上方に屈曲可能な一対の折り畳みバー70と、左右の前脚フレーム20の中間部に渡設されたクロスメンバー80と、一端がクロスメンバー80の中間部に他端が座フレーム30の後端部に枢支された伸縮部材90とを備えた。【選択図】図1
