Patent ID: 7006853

Claim:
A rotary-type hinge module of a portable wireless terminal, which is disposed between a terminal body and a folder of the portable wireless terminal, the hinge module having a first rotation axis and a second rotation axis perpendicular to each other, the hinge module enabling the folder to rotate about the second rotation axis after the folder is opened from the terminal body, the hinge module comprising: a hinge housing assembled with the terminal body while being rotatable about the first rotation axis, the hinge housing having a fixing seat and an opening, the fixing seat being formed at a portion of an inner surface thereof, the opening formed through an opposed portion to the fixing seat, the fixing seat being exposed through the opening in the direction of the second rotation axis; a supporting shaft fixed to the fixing seat of the hinge housing and extending through the opening of the hinge housing; a hinge cam fixed to the supporting shaft and having at least one valley-shaped portion formed at one side thereof; a hinge shaft having a mountain-shaped portion formed at one side thereof, a hinge shaft hole passing axially there through, and at least one guide protuberance formed on a circumferential surface of the hinge shaft, the supporting shaft being inserted through the hinge shaft hole; an elastic means forcing the hinge shaft toward the hinge cam so that the mountain-shaped portion and the valley-shaped portion are in sliding contact with each other; and a rotary shaft having a shape of a cylinder which has an open end and a closed end opposite to each other, the rotary shaft containing the hinge cam, the hinge shaft, and the elastic means, the rotary shaft having at least one guide hole with which the guide protuberance of the hinge shaft is engaged, the rotary shaft having an assembling means to which one end of the folder is fixed.