| 摘要 |
PROBLEM TO BE SOLVED: To provide a chair capable of reducing a load onto the back muscle when having an S-shape posture.SOLUTION: A chair (1) includes a seat part (2), a leg part (3) supporting the seat part (2), and a backrest part (4) positioned at a rear upper side of the seat part (2). The backrest part (4) is provided with a lumbar flexure auxiliary part (6) projecting to the front of the seat part (2) so as to assist a posture of the flexure of the lumbar (5a) of a seated person (5) who is seated on the chair (1). The leg part (3) is provided with a foot placing tool (9) to place a foot of the seated person (5). In the foot placing tool (9), a rear part (9a) of the foot placing tool (9) is formed higher than a front part (9b) of the foot placing tool(9) when placing the foot so as to make a heel higher than toes.SELECTED DRAWING: Figure 1 |
