| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a legless chair capable of continuously obtaining a stable sitting feeling without discomfort, and obtaining a sitting feeling in which load on a lumber spine is reduced even when continuing to sit in the chair. <P>SOLUTION: The legless chair has a seat part A for people to be seated, and a backrest part B which can tilt by being connected to the seat part A. A tailbone of buttocks abuts with an opening E formed at the seat part A side being a lower part of the backrest part B and a surface of the backrest part B. Further, a gap is generated between the surface of the backrest part B and a lumber spine in such a condition that the upper part of a thoracic spine is leaned against the backrest par B. The gap is eliminated by jumping into the gap of an auxiliary cushion part C which is mounted with the upper side of the opening E of the backrest part B as a shaft. The gap between the surface of the backrest part B and the lumber spine is eliminated by the auxiliary cushion part C. Thus, the chair can be used while maintaining a position of the lumber spine in a natural state with respect to the waist of the seated person with the backrest section B being tilted. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
