| 摘要 |
PURPOSE: A shock-absorbing hinge for opening and closing a door is provided to naturally open and close a door by allowing a check valve to control the overload of hydraulic pressure. CONSTITUTION: A shock-absorbing hinge for opening and closing a door comprises a hydraulic housing(120), a guide(140), an actuator(150), a torsion spring(170), and an upper finishing member(190a). The hydraulic housing is fixed to the inside a main housing(110a) and has a hydraulic chamber(121). The guide is fixed to the main housing and has a screw hole(141). The actuator has a screw(151), a piston(152), a control hole(153), a hydraulic passage(154), a check valve(155), and a key(157). The piston is vertically moved in the hydraulic chamber. The torsion spring is coupled to the bottom of the hydraulic housing and applies elastic force to the hydraulic housing. The upper finishing member is fixed to the main housing and has a center key hole(191a) in which the key of the actuator is inserted. |
