| 摘要 |
PROBLEM TO BE SOLVED: To provide a seat cushion which has high air permeability and can be improved in performance of supporting the back of a seated person by swelling along the curve of the backbone. SOLUTION: A part of a back part cushion 20 can be swollen by an air cushion 50 supported in the back side of the back part cushion 20. By setting the air cushion 50 below a position corresponding to the chest of a seated person, a position lower than around the chest part of the seated person, especially a position corresponding to the waist part, is swollen forward to support the back part of the seated person while it is in close contact with the back part of the seated person. According to this invention, because the seat part cushion 10 and the back part cushion 20 are constituted of three-dimensional knitting, the seat is excellent in cushion performance in spite of a thin shape, and air permeability, and suitable for long time use. COPYRIGHT: (C)2006,JPO&NCIPI
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