Hidden heaven and earth shaft hinge

Abstract

The invention discloses a hidden heaven and earth shaft hinge. The hidden heaven and earth shaft hinge comprises an upper hinge and a lower hinge, wherein the upper hinge comprises an upper shell and a shaft core, the shaft core is vertically fixed on the inner side of the upper shell, the upper end of the shaft core is mounted on the inner side of an upper shaft seat, the lower hinge comprises a lower shell, a buffering structure and a transmission mechanism, the buffering structure and the transmission mechanism are vertically arranged in the lower shell, the buffering mechanism comprises an oil cylinder, an oil cylinder piston rod, an adjusting screw, a force adjusting nut, a first plane bearing, a gasket, a transmission piston rod and a first compression spring, and the transmission mechanism comprises a spiral fixing head, a cylindrical pin and a guide sleeve. The heaven and earth shaft hinge is simple in structure, low in machining difficulty, convenient to install and good in safety and has the functions of buffering door closing and locking, the transmission mechanism of the heaven and earth shaft hinge is low in friction loss, smooth in transmission and efficient, after installation, the upper hinge and the lower hinge are respectively hidden and fixed in side frames of a narrow-frame iron frame door or a narrow-frame aluminum frame door, the frame size of the door does not need to be increased, the appearance of a vertical hinged door is simple and attractive, and the vertical hinged door conforms to the current popular extremely simple style.

Description

technical field [0001] The invention relates to a hinge for a side-hung door, in particular to a concealed sky-earth axis hinge which can be hidden in a narrow frame iron frame door or a narrow frame aluminum frame door. Background technique [0002] The buffers for swing doors on the market are mainly door closers, floor springs, and buffer hinges. They have a large appearance and are exposed for installation. Framed doors and aluminum framed doors. The internal transmission mechanism of the existing side-hung door is combined with the buffer mechanism. The buffer mechanism adopts a hydraulic mechanism, and the transmission mechanism is placed in the hydraulic mechanism. The transmission mechanism is always in contact with the hydraulic oil. The oil seal requires high requirements, resulting in difficult product processing and complex structure. Difficult to assemble. In addition, the wear and tear caused by the operation of the mechanism accelerates the turbidity and det...

AI Technical Summary

Problems solved by technology

The internal transmission mechanism of the existing side-hung door is combined with the buffer mechanism. The buffer mechanism adopts a hydraulic mechanism, and the transmission mechanism is placed in the hydraulic mechanism. The transmission mechanism is always in contact with the hydraulic oil. The oil seal requires high requirements, resul

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