HINGE BLADE STRUCTURE

A hinge blade structure, comprising two hinges (10, 20), a connecting sleeve (50), a fixing rod (30), a threaded sleeve (40), a plug (60), a damping positioning pull rod (01) and an atmospheric pressure cylinder (07); the damping positioning pull rod (01) and the atmospheric pressure cylinder (07) are both located within the connecting sleeve (50) and interposed between the fixing rod (30) and the plug (60), the atmospheric pressure cylinder (07) and the plug (60) are fixedly arranged relative to each other, the damping positioning pull rod (01) and the threaded sleeve (40) are fixedly arranged relative to each other, the damping positioning pull rod (01) can be slidably connected, along the longitudinal direction of the connecting sleeve (50), in the atmospheric pressure cylinder (07), the damping positioning pull rod (01) and the atmospheric pressure cylinder (07) are fitted to form an atmospheric pressure chamber (009), and the atmospheric pressure cylinder (07) is provided with an air vent hole (007) penetrating through the atmospheric pressure chamber and an air intake hole (008), a positioning function being generated by the resistance of the atmospheric pressure chamber (009) against the damping positioning pull rod (01). Said structure can achieve positioning over the entire process.