| 摘要 |
PURPOSE: A hydraulic floor hinge device for opening and closing a door is provided to reduce the size of the floor hinge device by simplifying a structure, and to easily maintain and repair the device. CONSTITUTION: A hydraulic floor hinge device for opening and closing a door comprises a floor hinge housing(110), a piston unit(120), a cam unit(130), and an elastic member(140). The piston unit is installed inside the floor hinge housing. The cam unit is installed in the floor hinge housing to be connected to the piston unit. The elastic member is installed inside the floor hinge housing, and elastically pressurizes the piston unit. |
