| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard apparatus capable of stably playing while attaining a key-depression touch feeling similar to the acoustic piano. <P>SOLUTION: The keyboard apparatus is provided with: a plurality of keys 11 rotating in connection with key depressions; and a plurality of switch members 24 which are provided respectively corresponding to the plurality of keys 11, are elastically deformed by the key depressions, and are provided at positions where the distances from rotation center parts of the keys are shorter in a treble tone part than in a bass tone part. Rotation angles of the respective keys 11 when switches of the switch members 24 are turned on are the same. When releasing the keys, the switch members 24 are in contact with the keys 11 and elastically deformed, and front ends of the keys 11 are pressed upward by the repulsive forces. The repulsive forces of the switch members 24 have characteristics that are constant in regions having small deformation of the switch members 24 and decrease in accordance with increases in the deformation thereof. <P>COPYRIGHT: (C)2010,JPO&INPIT |
