| 摘要 |
PROBLEM TO BE SOLVED: To achieve thinning, feel a clear tactile sense at inputting, and perform efficient key inputs with erroneous inputs reduced. SOLUTION: The key unit 13 includes: a key base 30; an axis core 31 fixed on the key base; and key tops 32 each with a top face as a depressing face, fitted with an insertion-coupling pawl part 36 and a protruded part for outputting input signals when depressed at an underside, and insertion-coupled with the axis core through the insertion-coupling pawl part in free detachment and axially supported. The insertion-coupling pawl part is fitted at a far end side of a key top so that a short end side P1 closer to a user than a far end side sinks first with the far end side P2 far from the user as a turning center when the key top is depressed, and the depressed face has a swollen part 38 formed swollen in a convex shape with an edge part 38a extended in a finger width direction for the thick of the finger, wherein an underpart of each finger comes in linear contact with the edge part. COPYRIGHT: (C)2011,JPO&INPIT
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