| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a black key of a keyboard musical instrument which can easily provide necessary touch weight inexpensively, without having to use lead or special components. <P>SOLUTION: The black key 1 is equipped with a key body 2 which extends in the fore-and-aft direction and freely swings; a hollow part 8; and a weight insertion hole 9 which is formed in one end in the fore-and-aft direction and connects with the hollow part 8, and the black key 1 has a black key cover 3 fitted to the front of the top surface of the key body 2 and a weight 10, which has a screw part 10b on its outer circumferential surface and is detachably fixed to the black key cover 3, by being inserted via the weight insertion hole into the hollow part 8 of the black key cover 3 to have the screw part 10b threadedly engaged with an inner wall surface of the hollow part 8. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
