A shrapnel type built-in buffer hinge

Abstract

The invention provides an elastic-sheet-type built-in buffering hinge. The elastic-sheet-type built-in buffering hinge comprises a hinge cup, a hinge arm and a base, wherein the hinge cup is connected with the head end of the hinge arm through an installing shaft, and can rotate around the installing shaft to be folded onto the base; the tail end of the hinge arm is connected with the base; a built-in buffering device and an installing slot are arranged on the hinge cup; the built-in buffering device is fixedly installed on the hinge cup; an elastic sheet connected with the bottom of the hinge cup is arranged on the installing slot; a cam block connected with the elastic sheet in a matching way is arranged at the head end of the hinge arm, so that the head end of the elastic sheet is upwardly pressed or downwardly supported onto the hinge cup so as to enable a buffering cylinder to incline along with the hinge cup up and down and slide downwardly or upwardly in a fixing base relative to a piston rod. The elastic-sheet-type built-in buffering hinge simplifies an installing structure, enhances the buffering effect and improves the firmness and stability.

Description

technical field [0001] The invention relates to the field of hinges, in particular to a shrapnel type built-in buffer hinge. Background technique [0002] At present, most of the existing hinge structures widely used in furniture include hinge cups, hinge arms and bases connected in sequence, and the hinge cups and bases are respectively fixed on the door panel and the rail body. During the opening and closing process of the hinge, in order to generate the elastic pre-tightening force for automatic closing, a torsion spring is usually provided on the hinge cup. The hinged arm closes automatically. However, since the torsion spring is continuously stressed during the opening and closing process of the hinge, the elastic coefficient of the torsion spring will gradually decrease after a long period of use, resulting in relaxation, failure, or even disconnection of the torsion spring. The relaxation and failure of the torsion spring reduce the stability of the hinge, so that t...

AI Technical Summary

Problems solved by technology

However, since the torsion spring continues to be stressed during the opening and closing process of the hinge, the elastic coefficient of the torsion spring will gradually decrease after a long period of use, resulting in the torsion spring loosening, failing, or even disconnecting

The relaxation and failure of the torsion spring reduces the stability of the hinge, so that the hinge cup cannot be closed automatically after multiple rotations or long-term use

In addition, when the torsion spring is disconnected, the rotating mechanism of the hinge cup and the hinge arm is stuck, which greatly shortens the service life of the hinge

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