| 摘要 |
PROBLEM TO BE SOLVED: To provide a keyboard device of thin construction excellent in the easiness in manipulation of such a configuration that a first lever and a second lever are not overlapped even if a key top is depressed. SOLUTION: A ratio of a dimension between a first locking part 4a of a first lever 4 and a shaft supporting part 4e to a dimension between the shaft supporting part 4e and a second locking part 4c of the lever 4 is made equal to a ratio of a dimension between a first locking part 5a of a second lever 5 and a shaft supporting part 5e to a dimension between the shaft supporting part 5e and a second locking part 5b of the second lever 5, and it is arranged so that the second locking parts 4c and 5b of the first 4 and second 5 levers are positioned outside the first locking parts 4a and 5a of the levers when the key top 6 is depressed.
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