Door leaf hinge with large-angle opening function

Abstract

The invention discloses a door leaf hinge with a large-angle opening function. The door leaf hinge comprises a middle connecting sheet, door leaf connecting sheets and door frame connecting sheets. The door frame connecting sheets comprise an upper door frame connecting sheet and a lower door frame connecting sheet. The door leaf connecting sheets comprises an upper door leaf connecting sheet anda lower door leaf connecting sheet, and the upper door leaf connecting sheet and the lower door leaf connecting sheet are symmetrically distributed at the upper end and the lower end of the middle connecting sheet. The upper door leaf connecting sheet and the lower door leaf connecting sheet are connected with grooves in the sides of the middle connecting sheet through protrusions. The door frameconnecting sheets are further connected with a door frame seat through a door frame shaft, the door leaf connecting sheets are connected with a door leaf adjusting seat through a door leaf shaft, andthe door leaf adjusting seat is connected with a door leaf mounting base through an adjusting bolt. According to the door leaf hinge, large-angle opening can be achieved, the bearing force is large, the opened connecting sheets are symmetrically connected, and therefore transmission is stable during opening, and three-dimensional adjustment of the door leaf hinge can be achieved.

Description

technical field [0001] The invention relates to a door hinge, in particular to a door hinge with a large opening angle. Background technique [0002] At present, the concealed hinges used on anti-theft doors, fire doors, and steel doors generally have door opening angles ranging from 90 to 110 degrees. Because anti-theft doors, fire doors, and steel doors are generally installed on the outer wall and External opening, when the rotation angle of the hidden hinge is greater than 150 degrees, the door leaf can be close to the wall and fixed by the door stopper; when the rotation angle of the concealed hinge is less than 150 degrees, the door leaf cannot be close to the wall and cannot be fixed after opening Cause the door leaf to block passage or corridor, bring a lot of inconvenience to user's life and work. The invention patent with the patent number of 201520402410.9 discloses a 180° openable built-in hinge. In this patent, multiple arc-shaped connecting pieces are set up a...

AI Technical Summary

Problems solved by technology

[0002] At present, the concealed hinges used on anti-theft doors, fire doors, and steel doors generally have door opening angles ranging from 90 to 110 degrees. Because anti-theft doors, fire doors, and steel doors are generally installed on the outer wall and External opening, when the rotation angle of the hidden hinge is greater than 150 degrees, the door leaf can be close to the wall and fixed by the door stopper; when the rotation angle of the concealed hinge is less than 150 degrees, the door leaf cannot be close to the wall and cannot be fixed after opening Cause the door leaf to block the passage or corridor, which brings a lot of inconvenience to the user's life and work

The invention patent with the patent number of 201520402410.9 discloses a 180° openable built-in hinge. In this patent, multiple arc-shaped connecting pieces are set up and down between each connecting piece. The upper connecting piece can be connected on the upper edge of the lower connecting piece. The arc of the sheet moves in such a way to achieve 180° opening, but the technical solution of this patent still has the following disadvantages: 1. Since each layer of connecting sheets is connected by a single layer of protrusions and grooves The connection, the connection is unstable and unreliable, and the door leaf will sink when the door leaf is opened, and the use effect is not good; 2. The hinge is not easy to adjust in actual use, making it difficult to install the door leaf very big

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