| 摘要 |
PROBLEM TO BE SOLVED: To provide a chair which can stably keep the waist support part with relatively little difference in position against different body constitutions and, compatibly, suitably adjust support comparatively widely varying positions of shoulders and the head corresponding to a body constitution to improve the convenience of using the chair without sacrificing the support function for shoulders and the head. SOLUTION: This chair is equipped with a backrest with headrest function. The support member 41 to support shoulders and the headrest 3 to support the head can be vertically moved keeping the support member 21 to support the waist of the backrest part at a fixed position.
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