| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a keyboard of a piano with which the reduction of a manufacturing cost is made possible by the reduction of the working cost of a middle plate. SOLUTION: This keyboard has a keyboard body 2 which is freely oscillatably supported in a central part and the middle plate 3 which is mounted atop the central part of this body in order to reinforce the keyboard body 2. The middle plate 3 comprises plywood having a veneer 3a for a core of which the woodgrains extend in the transversely direction of the keyboard body 2 and decorative veneers 3a, 3b of which the woodgrains extend in the longitudinal direction of the keyboard body 2.</p> |
