| 摘要 |
An information processing unit of the present invention includes hollow portions on a first casing side and protrusion portions on a second casing side, and the portions on both sides can be fitted. Accordingly, even when a notebook PC accidentally is dropped on the ground or the like, it is possible to reduce changes in the relative position of the second casing with respect to the first casing, which reduces a load applied to a hinge portion. Therefore, it is possible to prevent the hinge portion from being broken.
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