| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve assemblability and inspection efficiency of a keyboard device of an electronic musical instrument having a plurality of mutually different mass bodies. <P>SOLUTION: An inertia moment around an oscillation center of each of a plurality of hammers 16w2, 16b2 is differentiated that respectively oscillate in synchronization with oscillation of a plurality of keys. An identifier for identifying each of the hammers 16w2, 16b2 is provided at a position, which is a respective surface of the plurality of hammers 16w2, 16b2, and which is visible in a state where the plurality of hammers 16w2, 16b2 are attached to a key frame 12f, but invisible in a state where the key frame 12f is attached to the electronic musical instrument. A marker for showing an attachment position of the hammers 16w2, 16b2 is provided at a position, which is a surface of the key frame 12f, and which is visible in a state where the plurality of hammers 16w2, 16b2 are attached to the key frame 12f, but invisible in a state where the key frame 12f is attached to the electronic musical instrument. <P>COPYRIGHT: (C)2012,JPO&INPIT |
