PROBLEM TO BE SOLVED: To provide a chair having an inherent function as the chair for eating.SOLUTION: The chair includes three-divided seat parts of a first seat part 3, a second seat part 4, and a third seat part 5, and the back 6. The second part 4 has a retaining force larger than those of the first and third parts 3 and 5, thereby firmly retaining the sacral parts that are the axis for forward movement of the body. The right/left rear iliac spurs that make a start point of the forward movement of the body, the upper sacrum and the lumbar parts from the fifth lumbar to the second lumbar are able to push the back 6 with a higher elastic coefficient. Thereby as the chair for eating, the chair enables the user to move the body forward efficiently at eating, resulting in alleviation of physical fatigue and easiness for eating.COPYRIGHT: (C)2012,JPO&INPIT【課題】摂食用の椅子としての本来の機能を有した椅子を提供する。【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、摂食用の椅子として、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