Door hinge with buffering function

Abstract

The invention relates to a door hinge with a buffering function. The door hinge is characterized by comprising a shell, a buffering shaft, first and second torsion springs, a connector, a hinge cup, a 'U'-shaped rotating shaft, first and second rotating shafts and a linkage part. A buffering block is arranged on the buffering shaft which is rotatably arranged in the shell; the first torsion spring sleeves the buffering shaft, and one end of the first torsion spring is abutted against the interior of the shell while the other end of the first torsion spring is abutted against the buffering block; one end of the connector is rotatably arranged inside the shell through the first rotating shaft, and the other end of the connector is rotatably connected with the hinge cup through one shaft of the 'U'-shaped rotating shaft; one end of the linkage part is in linkage connection with the hinge cup through the other shaft of the 'U'-shaped rotating shaft, the other end of the linkage part is rotatably arranged inside the shell through the second rotating shaft, and the end of the buffering block can be abutted against the linkage part; the second torsion spring sleeves the first rotating shaft, one end of the second torsion spring is fixed to the linkage part, and the other end of the second torsion spring is abutted against the linkage part. The door hinge with the buffering function has the advantages of realization of buffering in door closing without use of buffering cylinders, structural simplicity, long service life, convenience in maintenance and high precision.

Description

technical field [0001] The invention relates to a door hinge with buffer function. Background technique [0002] At present, a door hinge with a buffer function includes a housing, a first rotating shaft, a "U"-shaped rotating shaft, a hinge cup, a connecting piece, a linkage, a pusher, and a buffer cylinder. The piston rod of the buffer cylinder is rotationally connected to the pusher, and the pusher It is connected with linkage again, and its structure is comparatively complicated. When in use, the piston rod of the buffer cylinder pulls the pusher to play a buffering role; the piston rod does not move on the axis, so the friction between the piston rod and the cylinder sealing ring is relatively large, and after a long time of use, it is easy to leak oil and cause the door hinge to fail. The service life is short, it is inconvenient to maintain, and the precision of the door hinge is poor. Contents of the invention [0003] The purpose of the present invention is to o...

AI Technical Summary

Problems solved by technology

[0002] At present, a door hinge with a buffer function includes a housing, a first rotating shaft, a "U"-shaped rotating shaft, a hinge cup, a connecting piece, a linkage, a pusher, and a buffer cylinder. The piston rod of the buffer cylinder is rotationally connected to the pusher, and the pusher It is also connected with linkage, and its structure is more complicated

When in use, the piston rod of the buffer cylinder pulls the pusher to play a buffering role; the piston rod does not move on the axis, so the friction between the piston rod and the cylinder sealing ring is relatively large, and after a long time of use, it is easy to leak oil and cause the door hinge to fail. Short service life, inconvenient maintenance, poor door hinge precision

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