| 摘要 |
PURPOSE: A door hinge is provided to make a door closed stably by using the torsional force of a torsion spring by additionally installing a torsion spring in a door hinge in which a compression spring is installed. CONSTITUTION: A door hinge is composed of a shaft(22), a torsion spring(34), a piston(36), and a compression spring(40). The shaft is rotated by the closed motion of a door. The shaft has a coupler(23) which is rotatably installed in a door frame in the front end. The shaft is integrally formed with a sleeve(24) in the outer circumference. The torsion spring is fitted on the external diameter of the shaft, in which one end of the torsion spring is hanged at an end projection(28) and the other end of the torsion spring is inserted in a groove of the piston. The piston is fitted to a rod and is contacted to the end of the shaft. The piston is slid to the rear direction by the rotary motion of the shaft. One end of the compression spring is contacted to the piston. The end of the compression spring is contacted to a partition of a housing(10). The compression spring generates the compressive force by the pressurizing of the piston. |
