| 摘要 |
A cover structure (1) for a portable electronic device includes a back cover (10) and a front cover (20), wherein the back cover forms a main joint portion (120), the front cover forms a shell (22), the main joint portion has an arcuate wall (121), and a cutout portion (1210) is formed on the arcuate wall. When assembling the back and front covers, a knuckle (12) is formed by means of the shell engaging with the main joint portion on the cutout portion thereof.
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