| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard lid device of a keyboard instrument that easily opens and closes a keyboard lid and suppresses noise during opening and closing. <P>SOLUTION: The keyboard lid device 7 of the keyboard instrument 1 which opens and closes a performance part 6 arranged between right and left arms 3 and 3, includes; the keyboard lid 25 slidable in the longitudinal direction between an opening position and a closing position; a first rack 23 extending in the longitudinal direction; a second rack 33 that is disposed at right and left ends of a rear lid 27 and extends in the longitudinal direction; a rotation shaft 38 attached to the rear lid 27 rotatably and longitudinally movably; and a rotator that is provided integrally with right and left ends of the rotation shaft 38, is disposed between the first rack 23 and the second rack 33, and has a first pinion 41 and a second pinion 42, wherein the first and second pinions 41 and 42 engage with first and second racks 23 and 33, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT |
