| 摘要 |
PROBLEM TO BE SOLVED: To provide an elastic shell structure of a chair for securing basic rigidity and providing soft sense of sitting.SOLUTION: In a body support structure of a chair including a resin molded plate, a base part 3 which has basic rigidity as a structure in an area 2 to which at least elasticity is given and an elastic force part 4 which is formed on a different level from the base part 3 and gives elasticity to the structure are formed separately three-dimensionally, two surfaces independently of each other and including a base surface 3f formed by the base part 3 and an elastic force surface 4f formed by the elastic force part 4 are structured, the elastic force surface 4f is relatively projecting forward with respect to the base surface 3f, and is formed on a different level from the base surface 3f. |
