| 摘要 |
PROBLEM TO BE SOLVED: To lessen a portable terminal device in weight without changing its appearance and design and without deteriorating its waterproofness even when a cell pack is mounted by a method wherein a hole is provided in the surface of the portable terminal device main body that bears against the cell pack, and a sealing material is provided between the portable terminal device and the cell pack so as to cover the hole. SOLUTION: A hole 1b is provided in the cell pack mounting surface 1a of a portable terminal body 1 which bears against the cell pack 2, and an elastic sealing material 6 formed of waterproof sealing material and smaller in specific gravity than the case material of the portable terminal device 1 is provided between the terminal device body 1 and the cell pack 2 so as to cover the hole 1b. By this setup, the portable terminal device can be lessened in weight without changing its appearance and design and deteriorating it in waterproofness.
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