| 摘要 |
A chair (1) includes: a leg body (10); a backrest supporting body (20) supported by the leg body (10); a backrest rear supporting member (40) supported by the backrest supporting body (20); and a backrest (50) that is supported by the backrest rear supporting member (40) and supports the back of a user. The backrest (50) has: a flexible upholstering material (51) configured to receive the back of the user and is displaceable depending on the back; and a pair of vertical frame sections (53A, 53B) that are mounted on the upholstering material (51), have lower ends connected to the back rest rear section support section (40), and are separated in a width direction in which twisting deformation is allowed depending on a force applied from the upholstering material (51). Also, the backrest (50) may have an upper frame section (52) connected to the backrest rear supporting member (40). The backrest rear supporting member (40), which may be connected to both ends of the upper frame section (52) in the width direction, may have: a lower connection section (41) connected to the backrest supporting body (20); a deformable section (42) that extends upward from the lower connection section (41) and enables elastic deformation depending on a load applied to the backrest (50) from the back of the user; and an upper connection section (43) that extends upward from an upper end of the deformable section (42) and is connected to the backrest (50) at an upper end thereof. |
