| 摘要 |
PURPOSE: An elastic displacement structure for a seat board for a chair is provided to distribute load which is applied by one who is seated, and to be continuously effective in pelvic muscle exercise and waist exercise. CONSTITUTION: An elastic displacement structure for a seat board for a chair includes a base plate(110) which is fixed to the upper part of a leg unit; a seat board unit(100) which consists of a first seat board and a second seat board(120) which are divided into the left and right sides and installed on the upper side of the base plate; and an elastomer(130) which is elastically displaced by the load of one who is seated and installed between the base plate, the first and the second seat boards. The elastomer comprises a closed-curve fixing end part which is formed with a closed-curve end by bending the middle portion of a metal wire; a center coil unit which is formed by respectively winding the portion which is horizontally extended from the closed-curve end in a coil shape with bilateral symmetry; an elastic unit which is upwardly and inclinedly extended from the center coil unit; and an elasticity free end unit which is composed of a free end unit which is extended horizontally by bending from the elastic unit.
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