| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard device of an electronic musical instrument, in which a key touch becomes lighter in a pitch order, when proceeding from a bass register key towards a treble key. <P>SOLUTION: In a keyboard device of an electronic musical instrument, a plurality of white keys 11w and a plurality of black keys are provided that oscillate when a key pressing and releasing operation is done. The keyboard device includes a plurality of hammers 16w for the white keys and a plurality of hammers for the black keys having engaging parts engaging with the plurality of white keys 11w and the plurality of black keys respectively, and oscillating in synchronization with the oscillation of the plurality of white keys 11w and the plurality of black keys. When proceeding from a bass register towards a treble, the hammers 16w and an inertia moment around an oscillation center of the hammers respectively become smaller, and the inertia moment around the oscillation center of the hammers is made to be smaller than the inertia moment around the oscillation center of the adjacent hammers 16w, while adjusting a distance from a respective oscillation center of the hammers 16w and the hammers to the engaging part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
