| 摘要 |
PROBLEM TO BE SOLVED: To provide a key sheet that is easy to be press-operated, with the interference from adjacent key tops eliminated through prevention of linking of the adjacent key tops, even if their interval is designed to be narrow, as well as, to provide a push-button switch that uses such a key sheet. SOLUTION: In the key sheet arranged on a substrate, when a key top 6a at the center is press-operated, a part 7a of a soft sheet 7 between the key top 6a and the surrounding key tops 6b, 6c is deformed by a large amount; whereas, a hard sheet 8 is bent as a whole, including a part 8a directly below the key tops 6b, 6c. This produces separated parts 16 between the soft sheet 7 and the hard sheet 8. Accordingly, the key tops 6b, 6c at right and left do not link so that wrong inputs are prevented. Furthermore, a press-operating load can be suppressed, and the surrounding key tops 6b, 6c are not affected by the pressing operation of the key top 6a at the center. COPYRIGHT: (C)2008,JPO&INPIT
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