| 摘要 |
A hinge mechanism and a clamshell device thereof are disclosed. The hinge mechanism includes a base, an axis portion, and a magnetic ring. The base is a metal material and has a pivot portion. The axis portion is pivoted to the pivot portion and can rotate with respect to the base, wherein the axis portion has at least one guiding groove. The magnetic ring is connected to the axis portion and adjacent to the base. The magnetic ring has at least one guiding portion used for sliding along the least one guiding groove. When the axis portion is rotating with respect to the base, the magnetic ring separates from the base and moving along the least one guiding groove by the at least one guiding portion. When the axis portion stops rotating, the magnetic ring attracts to connect to the base by a magnetic force.
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