| 摘要 |
An adjusting mechanism for easily and simultaneously adjusting the height and the angular orientation of an armrest is provided. The adjusting mechanism includes a supporting sleeve connected at a lower end to a chair and an outer casing connected at an upper end to an armrest and put around the supporting sleeve. A joint pipe fixed in an upper part of the supporting sleeve includes a first half having multiple rows of locating holes and a second half having multiple horizontally spaced stop grooves. A bent control arm is disposed in the outer casing with an upper end projected from the outer casing to serve as a hand control and a lower end extended into the supporting sleeve. Upward pushing the hand control brings a locating means provided at the lower end of the control arm to disengage from the locating hole and a stop arm provided opposite to the locating means to elastically press against one stop groove, allowing the outer casing to freely move upward or downward and rotate relative to the supporting sleeve and thereby achieve adjustment of the armrest associated therewith.
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