Patent ID: 7894866

Claim:
A portable terminal comprising: a first housing; a second housing combined with the first housing while facing the first housing; a guide groove having a polygonal locus formed in a first face of the second housing; a support protrusion formed in an area surrounded by the guide groove; a guide plate mounted in an inner side face of the second housing; a guide protrusion protruding from a top face of the first housing to be engaged with the guide groove and sliding within the guide groove; and an elastic member having two free ends of which one free end is supported by the guide protrusion and an other free end is supported by the support protrusion, wherein the elastic member provides a driving force for moving the guide protrusion to a vertex portion of the polygonal locus and the second housing translates about an axis perpendicular to the top face of the first housing while facing the first housing, thereby sequentially opening portions of the first housing and sequentially closing already opened portions of the first housing.