| 摘要 |
The present invention provides a door hinge which is provided to stably perform the closing operation of a door by using torsion, and torsional and compressive forces of a compression spring, and to support a hinged door, which opens upward, to be rotated around a door frame. The door hinge comprises: a housing which is fixed on the door frame and which has a space formed therein; a shaft which is inserted into the space, which has one end combined with the door to be rotatable while being exposed to the outside of the housing and which performs a rotating operation depending on the closing operation of the door; a sleeve integrated with the external diameter of the shaft; and a torsion and compression spring which is inserted in the external diameter of the shaft, which is twisted during the rotation process of the shaft, and which generates torsional and compressive forces to lower the rotational speed of the shaft to prevent the door from being rapidly closed while having one end caught by a protrusion formed on the sleeve and the other end caught by a protrusion of the housing. |
