| 摘要 |
A chair includes a base frame, a seat frame mounted on the base frame, a backrest frame mounted movably on the base frame and having a front end connected pivotally to a rear end of the seat frame, and left and right armrest frames which can be folded and unfolded independently. Each of the armrest frames includes front and rear pivot assemblies provided on the base frame, front and rear arm supports having bottom ends connected pivotally and respectively to the front and rear pivot assemblies, and an armrest member connected pivotally to top ends of the front and rear arm supports. The front and rear arm supports pivot forwardly and downwardly and pivot upwardly and rearwardly when the left or right armrest frame is moved to folded and unfolded positions, respectively.
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