| 摘要 |
<p>A chair seat (11) being divided into several parts (12, 13, 14A-B). It comprises a part (13) being fixed and a pivoting part (14A-B), where the pivoting part may pivot down from a starting position around a crossing axis (17A, 17B) against an elastic counter force, enabling a change of the sitting position by having the user change the angle of the hips.</p> |
