| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard device which enables downsizing of the whole device without causing hindrance to performance even if a cross direction length of keys is shortened. <P>SOLUTION: A black key 13 is divided into a key body part 20 mounted on a keyboard chassis 1 in a position capable of rotating in a vertical direction and a key operation part 21 mounted on the keyboard body part 20 in a way capable of sliding in a cross direction thereof. Therefore, even if the cross direction length of a white key 12 is shortened, the cross direction length of the key operation part 21 of the black key 13 can be sufficiently secured, and a cross direction arrangement state between the key operation part 21 of the black key 13 and the white key 12 can be optimized by sliding the key operation part 21 of the black key 13 to the rear during performance, as a result, a performer can perform well without feeling discomfort. The whole device can be downsized because the depth of the whole device can be shortened by sliding the key operation part 21 of the black key 13 to the front when not performed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
