A butterfly door hinge

Abstract

The invention discloses a butterfly type vehicle door hinge which has the advantages that the opening angle of a vehicle door is large, the vehicle door can be opened or closed in a labor-saving way, and the closing capability of the vehicle door is good. The butterfly type vehicle door hinge comprises a rotary hinge plate and a fixed hinge plate and also comprises an air spring, a driving connecting rod and a mounting support, wherein the fixed hinge plate is positioned between the rotary hinge plate and the air spring; the mounting support is fixedly mounted on an automobile body; the air spring comprises a cylinder body and a piston rod; the cylinder body is rotationally mounted on the mounting support; the end part of a free end of the piston rod is movably articulated with the end part of a first end of the driving connecting rod; the driving connecting rod passes through the fixed hinge plate; the end part of a second end of the driving connecting rod is connected with the rotary hinge plate; the fixed hinge plate is provided with a strip-shaped penetrating hole, wherein the driving connecting rod passes through the strip-shaped penetrating hole and performs corresponding translational movement inside the strip-shaped hole with rotation of the rotary hinge plate; the length direction of the strip-shaped penetrating hole is vertical to the longitudinal axis of the driving connecting rod.

Description

technical field [0001] The invention relates to auto parts, in particular to a door hinge. Background technique [0002] The door hinge is to connect the door and the body and ensure and maintain the position of the door relative to the body, so as to ensure and facilitate the opening and closing of the door. At present, the widely used door hinge structure is mainly composed of a hinge fixed leaf and a hinge movable leaf. The hinge fixed surface is installed on the side wall of the automobile body, and the hinge movable surface is installed on the rotatable car door, and is relatively adjacent to the hinge fixed leaf. , the two are connected by a shaft. This kind of door hinge, due to the limitation of the rotating shaft, the door can only be opened outwards at a certain angle, and the opening angle of the door is small, which is inconvenient for passengers to get on and off the car, and the weight of the door is relatively heavy, which makes it easier for passengers to op...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a butterfly-type car door hinge to solve the disadvantages of the car door hinges in the prior art, such as small door opening angle, laborious opening and closing, and poor door closing ability.

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