| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the vertical position adjustment of the wippen of the keyboard device of an acoustic piano or electronic musical instrument having pseudo actions. SOLUTION: When a screw part 26b is screwed down, a front end 26c projects into a space 36g and an oscillation piece 36c oscillates counterclockwise around a hinge part 36d and pushes a capstan 25 as shown by an alternate long and short dash line and, therefore, the wippen 36 rises as reaction. When the screw is conversely screwed back, the projecting amt. of the front end 26c in the space 36g decreases and the oscillation piece 36c oscillates clockwise, thereby lowering the wippen 36. The rotating of this screw member 26 is easily executed by inserting a rectilinear bar-shaped driver into the space between a front side keyboard section and the pseudo action from the space above this front side keyboard section and engaging this driver with the screw member 26. The easy vertical position adjustment of the wippen 36 is, therefore, made possible and the easy adjustment of the touch is made possible. |
