| 摘要 |
PROBLEM TO BE SOLVED: To easily perform the operation of a height adjusting mechanism and the like provided in a chair equipped with an arm without being hindered by the arm. SOLUTION: An elbow 3 supporting an armrest 1 is designed so as to have an open window 33 opened between an outside surface 3a and an inside surface 3b, and an operating part 4 is disposed within the window 33 to adjust the function of the chair.
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