| 摘要 |
PROBLEM TO BE SOLVED: To prevent fatigue of a seater's hip and thighs when the seater is seated on a seat cushion body for a long time, prevent the approximately V-shaped interior part of the seater's hip from the center of the hip to the vicinities of the roots of the right and left front thighs from expanding, and enhance the feel of the surface of the cushion body. SOLUTION: A recess 27 is formed in the bottom of the main part 23 of the cushion body 21. The recess 27 is formed of a V-shaped part 27a expanding forwardly from the seater hip point HP of the main part 23 into the form of V at an angle R of within approximately 90 deg., and an arcuate part 27b at the end of the V-shaped part 27a. The width L2 of the end of the V-shaped part 27a is 70 to 80 mm. The thickness of the cushion body 21a above the recess 27 is 20 to 50 mm.
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