Patent ID: 6980424
Filing Date: 2005-12-27
Classification: E05D,E05Y,G06F,H04M,H04N,Y10T

Abstract:
1. A rotary type hinge device for a portable wireless terminal, which is installed between a terminal body and a folder of the portable wireless terminal, the hinge device having a first rotation axis for opening and closing operations of the terminal body and folder and a second rotation axis extending perpendicular to the first rotation axis, and being adapted to cause the folder to rotate about the second rotation axis in a state wherein the folder and terminal body are opened, the hinge device comprising: a hinge housing rotatably coupled to the terminal body about the first rotation axis, the hinge housing being formed in a direction of the first rotation axis at a central region of an inner peripheral surface thereof with a pair of support brackets protruding to face each other, the support brackets defining a circumferentially extended support groove at the inner peripheral surface therebetween, the hinge housing further being formed with a first opening for exposing the support brackets and support groove toward a direction of the second rotation axis; a shaft frame unit formed with a fixing protrusion extended downwardly from a lower end thereof, which corresponds to the support groove, and at its inner surface around the lower end with a seating recess having a certain depth, the shaft frame unit defining a cam hole in the direction of the first rotation axis when the fixing protrusion is fixed into the support groove, the shaft frame unit further being formed at its upper end with a second opening for exposing the seating recess toward the direction of the second rotation axis; a main shaft unit rotatably positioned in the seating recess at its one end, and supported by the second opening at a certain position, the main shaft unit being formed with a shaft cam adapted to rotate about the second rotation axis within the cam hole of the shaft frame unit; and a coil spring received in one side of the hinge housing and adapted to provide a certain elastic force to the shaft cam of the main shaft unit.