| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a cost of a keyboard device in which at least two keys that are assigned different pitches are different in a length from an oscillation center to a front end of a key. <P>SOLUTION: White keys 11w and black keys are formed by resin molding. A support part SK is provided at a rear portion of each of the white keys 11w and the black keys. The support part SK comprises support plates sk1 to sk4 formed at intervals in a longitudinal direction. A support part SF is provided on a key frame 12, corresponding to each key. The support part SF comprises a support body sf1 which is comprised of a pair of right-and-left plate-like parts. In a range of a low-pitched sound, the support body sf1 and the support plate sk1 are engaged to support the respective keys. In a range of a medium-pitched sound, the support body sf1 and the support plate sk2 are engaged to support the respective keys. In a range of a high-pitched sound, the support body sf1 and the support plate sk3 are engaged to support the respective keys. <P>COPYRIGHT: (C)2013,JPO&INPIT |
