Patent ID: 8493730

Claim:
A portable terminal comprising: a hinge device for providing a pair of hinge axes extended in parallel; a pair of folding cases engaged with the hinge device, for rotating upon one hinge axis of the hinge axes, respectively; and a pair of sliding housings slidably installed in the respective folding cases; wherein the folding cases rotate in a folding direction or in an unfolding direction via the hinge device, and wherein as the folding cases rotate, the sliding housings slide on the folding cases and when the sliding housings are opened at 180° with respect to each other, one end of the sliding housing is in contact with another end of the other sliding housing, and wherein the hinge device comprises a cover member including a cover portion for covering one surface of each of the folding cases in a folded state, and module installation portions formed at both ends of the cover portion for covering both side ends of the folding cases; and a hinge module installed on at least one of the module installation portions, and wherein the hinge module comprises: a pair of first sun gears arranged upon the hinge axes, respectively; and a pair of second sun gears arranged between the first sun gears for enabling the first sun gears interact with each other.