| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a keyboard device of a keyboard instrument which is capable of abolishing weights consisting of lead to be attached to a keyboard, is accordingly capable of making the weight reduction of the keyboard and a piano and the adaptation to environmental problems and allows the easy adjustment of touch weights even in a place exclusive of a factory with good accuracy. SOLUTION: This keyboard device has the keyboard 3 which extends in the longitudinal direction and is freely oscillatably supported at a balance pin 7 in a central part, an action 4 which has a wippen flange 14 and a wippen 10 freely turnably supported at this wippen flange and is placed in a position on the rear side of the balance pin 7 of the keyboard 3, a spring 18 which is fixed to the wippen flange 14, engages the wippen 10 and biases the wippen 10 in a direction where the wippen 10 is lifted around the wippen flange 14 and an adjusting screw 19 which is freely advanceably and retreatably screwed to the wippen 10, abuts at its front end on the spring 18 and adjusts the biasing force of the spring 18 according to the advance and retreat positions.</p> |
