Patent ID: 7975350

Claim:
A monitor hinge device characterized in that said monitor hinge device enables a monitor to be opened and closed about a first rotation central axis and also enables said monitor which has been rotated about said first rotation central axis in an opening direction to be rotated about a second rotation central axis perpendicular to said first rotation central axis, and said monitor hinge device includes a pair of brackets disposed on a side of said monitor hinge device where said monitor is mounted, a base supported by these brackets in such a way that said base can be rotated about said first rotation central axis, and an elevator base disposed in such a way as to be able to move in a direction of said second rotation central axis with respect to said base, while a monitor shaft whose center is on said second rotation central axis, a guide screw groove being formed in the motor shaft, is disposed on said monitor and said monitor shaft is rotatably attached to said base and is penetrated through said elevator base, and characterized in that said monitor hinge device further includes a screw engaging mechanism disposed in said elevator base, for being engaged with the guide screw groove of said monitor shaft to move said elevator base in the direction of said second rotation central axis through rotation, and a positioning device disposed between said elevator base and said brackets, for positioning said monitor at a position at which said monitor is rotated by a predetermined amount with respect to said first rotation central axis and for positioning said monitor which has been rotated about said second rotation central axis at a position at which said monitor is rotated by a predetermined amount with respect to said first rotation central axis.