| 摘要 |
<p>A keyboard support apparatus has a mounting bracket (11), a keyboard support bracket (15) pivotally connected via parallel bars (20, 25) permitting change in altitude of bracket (15). The mecanism may be locked against change in altitude by means of a formation (58) associated with a bar (20) which is interengageable with a formation (54) associated with bracket (15) by means of a laterally operable lever (40) resiliently biased by a spring plate (52) towards engagement. In a preferred embodiment (figures 13 to 15) support bracket (15) may be tilted about a pivot (22) and the mechanism permits one handed selective operation of altitude adjustment or tilt adjustment.</p> |
