| 摘要 |
A pelvis fixed type seat product is provided to allow the pelvis of a user to be accommodated in the corresponding seat product and to prevent the lumbar vertebra and cervical spine from being bent left and right. A pelvis fixed type seat product comprises a cyclic seating part(100) whose central part is formed to be concave so as to support the both sides of ilium and the back part of sacrococcyx, wherein the both sides and back part of the seating part has the slope whose cross-section is decreased toward the center, and the pelvis of a user is accommodated in the seating part so as to be fixed.
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