| 摘要 |
PROBLEM TO BE SOLVED: To provide a foldable keyboard allowing each of two keyboard units to be arranged in a desired operative condition with an extremely easy operation after released from a folded condition. SOLUTION: A first key unit 37 of the first keyboard unit 3 is turnably arranged on a first base plate 5 and a second key unit 47 of the second keyboard unit 4 is turnably arranged on a second base plate 8. A gear tooth 43 formed on the arcuate face 42 of a first gear member 44 arranged on one side of a first supporting plate 6 is put in engagement with a gear tooth 53 formed on the arcuate face 52 of a second gear member 54 arranged on one side of a second supporting plate 9. COPYRIGHT: (C)2004,JPO
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