HINGE DEVICE OF PORTABLE TERMINAL WITH FOLDABLE STRUCTURE

A hinge device for a portable terminal having a foldable structure according to the present invention comprises: a housing positioned between one end of a first body and one end a second body; a first hinge blade and a second hinge blade which are fixed to the first body and the second body, respectively, and are rotatably supported by the housing, so as to rotate at a predetermined angle between an 'unfolded position' in which the first body and the second body are placed on the same horizontal line and a 'folded position' in which the first body and the second body face each other and come into contact with each other; and a slide member that interlocks the first hinge blade and the second hinge blade such that the first hinge blade and the second hinge blade move relative to each other, wherein the first hinge blade and the second hinge blade have first inclined guide groove and second inclined guide groove formed on the undersides thereof, and correspondingly thereto, the slide member has first inclined guide protrusion and second inclined guide protrusion formed on tops thereof, the slide member being disposed in the housing and reciprocating by a predetermined distance in a direction of a hinge axial line, and the first inclined guide groove and the second inclined guide groove being formed inclinedly in a direction crossing to each other with respect to the moving direction of the corresponding slide member.