| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain the lowest limit stopper which is strong and has high rigidity so as to obtain high accuracy by an after-touch sensor, and also to reduce the number of components with simple structure in a keyboard device. <P>SOLUTION: In this keyboard device, the lowest limit stopper 7 of a key is integrally formed with a key frame 1 at this side from the front wall part 12d of the movable frame 12 of the key frame 1. Rib walls 7d are formed between an upper face 7a and a lower face part 7c. An after-touch sensor 8 is provided on the upper face part 7a. As a result, since the keying force of the key after a keying stroke is detected by the after-touch sensor 8, an elastic plate, etc., under the movable frame 12 is not required. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
