Abstract: A swing hinge device of a portable terminal has a pair of housings, which are coupled to each other in such a manner that they can be rotated while facing each other. Using a resilient means and a pair of cams, the swing hinge device provides a rotational force so that one of the housings can be rotated semi-automatically to a position for allowing speech communication. The device also uses a hinge stopper, stopper washer, and the like to limit the range of rotation of the housings to 360° or less in any direction. This avoids any damage to a flexible printed circuit board and the like, which is positioned between the pair of housings.

Abstract: A portable communication device including a first housing and second housing, wherein the second housing is connected to the first housing so that it is rotatable around a first hinge axis while facing a top surface of the first housing to allow movement toward or away from the first housing. The device also includes a third housing connected to the second housing so that it is rotatable around the first hinge axis while facing the top surface of the first housing to allow movement toward or away from the first housing, and rotatable around a third hinge axis to allow rotational movement of a display. A battery pack, serving as a grip, is connected to the first housing so that it is rotatable around a third hinge axis while facing a bottom surface of the first housing to allow movement toward or away from the first housing. A sensing unit is provided to sense whether the battery pack is rotated.

Abstract: A hinge device of an information terminal, wherein the information terminal comprises a main body, a sub-body to be opened away from or closed to the main body while rotating about a hinge axis extending in one direction of the main body, and the hinge device for rotatably coupling the main body to the sub body. The hinge device comprises a driving part generating a driving force for rotating the sub body, and a clutch part for rotating the sub-body by the driving force of the driving part. When the sub-body rotates by external force, the clutch part prevents rotating force of the sub-body from being transmitted to the driving part. Such a hinge device configured as stated above allows the user to automatically open and close the sub-body of the information terminal by virtue of a driving motor provided therein, as well as to manually open and close it. Further, the user can freely adjust an opening angle of the sub-body to various angles, resulting in improvement in convenience of use.

Abstract: A portable communication device is disclosed. The portable communication device comprises a first housing extending in the longitudinal direction thereof, a second housing rotated about a first hinge axis perpendicular to the longitudinal direction of the first housing such that the angle between a bottom surface of the second housing and a corresponding top surface of the first housing varies, and a cylindrical hinge housing disposed at one end of the first housing while a portion of the cylindrical hinge housing protrudes outward from the first housing. The first hinge axis extends in the diametrical direction of the cylindrical hinge housing wherein the second housing is attached to the cylindrical hinge housing while the second housing is rotated about the first hinge axis. The cylindrical hinge housing has a second hinge axis extending in the axial direction of the cylindrical hinge housing so that the second housing can rotate about the second hinge axis.