| 摘要 |
A door hinge device is provided to improve the appearance the ceiling or a wall by preventing from exposing to the outside of a ceiling panel or a wall panel and to open an inspection port of a ceiling panel or a wall panel completely when opening a door. The door hinge device(10) contains: a primary hinge bracket(20) fixed on a door frame, and provided with a fixed unit(22) fixed on the upper part of a door frame by a screw and a pair of hinged units(24) folded downward from one side of the fixed unit(22); a connecting bracket(30) whose one end is connected to the primary hinge bracket(20) rotatively; a secondary hinge bracket(40) connected to the other end of the connecting bracket(30) rotatively and fixed to a door; and a torsion spring(50) supporting elastically in the direction of spreading the connecting bracket(30) and the secondary hinge bracket(40). |
