| 摘要 |
PROBLEM TO BE SOLVED: To relieve the effect of stress impressed on a base plate without greatly reducing the mounting efficiency with respect to the base board arranged in a case of an information terminal on which stress is impressed according to the depression of an operating key. SOLUTION: A mechanism for detecting depression of an operating key 15 is provided on the upper face of the base board 5 and thereby stress is impressed according to the depression of the operating key 15. A rib 11, extending toward the position directly under the area receiving stress according to the depression of the operating key 15 which is located on a surface of the base plate 5 opposite to the surface on which the stress is impressed by the depression of the operating key 15, is formed in the case 10. A rib displacement restraining part 1, fixed to the base plate 5, having a plane located along the side face of the rib 11, is mounted at the position contacting the rib 11 of the substrate 5. COPYRIGHT: (C)2005,JPO&NCIPI
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