PROBLEM TO BE SOLVED: To provide a chair having an original function according to applications, and a chair fitting.SOLUTION: The retention of a second seat face 4 out of three divided parts of a first seat face part 3, the second seat face part 4, and a third seat face part 5 is set higher than those of the first seat face part 3 and the third seat face part 5 to firmly retain the ischial region, or an axis of the forward movement of the trunk, a backrest part 6 to which the left/right posterior iliac spines, or the origins of the forward movement of the trunk, the superior sacral division, and the lumbar region from a fifth lumbar part to the second lumbar part can be pushed has a high elasticity, and for example, as a dining chair, a user can highly efficiently move the body trunk forward in dining to reduce the physical fatigue and facilitate the dining.COPYRIGHT: (C)2009,JPO&INPIT【課題】用途に応じた本来の機能を有した椅子および椅子装着具を提供する。【解決手段】3つに分割された第1座面部3、第2座面部4、第3座面部5のうち第2座面部4を第1座面部3および第3座面部5よりも保持力を高めることで体幹の前方移動の軸となる坐骨部を強く保持し、背凭れ部6は体幹の前方移動の起点となる左右後腸骨棘部、上部仙骨部および第5腰椎部から第2腰椎部までの腰椎部が押し付け可能で高い弾性率を有し、例えば摂食用の椅子としては、摂食時に利用者は体幹の前方移動を効率良く行うことができ肉体的疲労を軽減し摂食のし易いものとなる。【選択図】図4
