| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a keyboard which permits easy mounting of weights while using a substitutive material taking place of lead as material of the weights. SOLUTION: The keyboard 1 has a freely oscillatable keyboard body 2 which is formed with embedment holes 9, cylindrical members 10 which are composed of materials exclusive of the lead and are inserted into the embedment holes 9, and the weights 4 which are composed of materials exclusive of the lead, are press fitted into the cylindrical members 10 to flare the cylindrical members 10 by force in a diametral direction and to bring these members into pressure contact with the wall surface of the embedment holes 9 and are thereby attached to the keyboard body 2 across the cylindrical members 10.</p> |
