| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a piano keyboard capable of effectively giving a touch weight while using a replaced material replaced for lead as a material of a weight and reducing the manufacturing cost by simplification of attaching working of the weight. SOLUTION: The piano keyboard is provided with keyboard bodies 2a and 3a having a rectangular cross section, supported swingably on a keyboard fulcrum 4 in the center part and extending in the front and rear direction, and an edge seat board 8 provided on the rear ends of the upper faces of the keyboard bodies 2a and 3a and attaching a capstan 10. The edge seat board 8 is composed of a material except for lead having the specific gravity of a larger prescribed value than that of the keyboard bodies 2a and 3a, and constituted as the weight giving a weight to the keyboard bodies 2a and 3a.</p> |
