| 摘要 |
PURPOSE: A back support cushion for a chair is provided, which can obtain stable effect in the stable location regardless of a boundary space of a backboard part and a part. CONSTITUTION: A back support cushion for a chair comprises: a frame(3) consisting of the upper part, lower part and side; a drag net support net(8) supported by the frame; a band(4) drawing the upper part and lower part; an elastic bands(5) installed at the side; and an upward frame(3-1) which comes into contact with a backboard part(1). In the side of the frame, a waist support band(6) in which both ends are supported is added.
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