BIDIRECTIONAL OPENING AND CLOSING CONTROLLABLE DOOR HINGE

摘要

Provided is a bidirectional opening and closing controllable door hinge which can make a door opened and closed bidirectionally. The door hinge includes hinge shafts which are installed in the four corners of a door frame, and function as rotating shafts, control portions which regulate accommodation and secession of the hinge shafts, and stop pins which are symmetrically installed in the left and right sides and control the control portions. The door hinges are installed on top and bottom of a door. When the door is opened at its one side, the control portion of the opened side secedes the hinge shafts, and the control pin of the opened side blocks up the opposing control portion. The hinge shafts accommodated in the control portions function only as the rotating shafts.