| 摘要 |
PURPOSE:To enhance the twist-resistant strength of an enclosure fitting structure in a portable electronic apparatus, to make the fitting structure more surely and strongly against a falling shock and to prevent the fitting structure from being detached and levitated. CONSTITUTION:Ribs 1 whose cross section is I-shaped and ribs 2 whose cross section is L-shaped are installed alternately in a plurality of parts on the side of a box-shaped case 3 which divides and constitutes an enclosure for a portable electric apparatus. In addition, at a cover 4 as a ceiling lid for the case 3, ribs whose cross section is U-shaped are installed in a plurality of parts in positions corresponding and fitting to the ribs 1, whose cross section is I-shaped, at the case 3, and U-shaped grooves are formed alternately in a plurality of parts in positions corresponding and fitting to the ribs 2 whose cross section is L-shaped. Thereby, the twist-resistant strength of the enclosure is enhanced sharply, and it is possible to obtain an effect of preventing the fitting of the cover from being detached when a falling shock is exerted. |
