Door hinge mechanism used for vehicles

Abstract

The invention provides a door hinge mechanism used for vehicles, which comprises main hinges, auxiliary hinges and pin shafts connected with the main hinges and the auxiliary hinges. The main hinges rotate around the pin shafts relative to the auxiliary hinges; the auxiliary hinges are provided with two mounting holes; the main hinges comprise a first main hinge and a second main hinge which are similarly structured in pair; the auxiliary hinges comprise a first auxiliary hinge and a second auxiliary hinge which are similarly structured in pair; the pin shafts comprise a first pin shaft and asecond pin shaft which are similarly structured in pair, and a connecting line of the two mounting holes of the first auxiliary hinge and a connecting line of the two mounting holes of the second auxiliary hinge are all skewed with center lines of the corresponding pin shafts. The door hinge mechanism has the advantages that: the main hinges, the auxiliary hinges and the pin shafts are adopted asthe universal structure, and only the positions of the mounting holes on the auxiliary hinges are different,, so the versatility of the parts are improved, and the die cost, fixture cost and mountingand positioning cost are greatly reduced. Meanwhile, by adopting the skewed connecting lines of the upper two mounting holes and the lower two mounting holes, the door hinge mechanism improves the bearing capacity of the first hinges and the second hinges, thereby effectively preventing the vehicle door from sagging.

Description

【Technical field】 [0001] The invention relates to the technical field of vehicle manufacturing, in particular to a door hinge mechanism for vehicles. 【Background technique】 [0002] The door hinge mechanism mainly makes the relative rotation between the car door and the body of the car. At present, for the door hinge mechanism of double-suspension vehicles, such as figure 1 and figure 2 As shown, it includes a main hinge 11 that is rigidly connected with the automobile door system, and a secondary hinge 12 that is rigidly connected with the vehicle body. Both the primary hinge 11 and the secondary hinge 12 have two connecting arms 13 that are parallel to each other. In the designed transfer hole 131, a pin shaft 14 passes through the middle, thereby connecting the door system and the vehicle body. This secondary hinge 12 is usually provided with two holes 121 for fixing the hinge mechanism on the vehicle body. In general, the single door of an automobile is provided wit...

AI Technical Summary

Problems solved by technology

[0003] The main hinge and auxiliary hinge of the door hinge mechanism are mostly made of molds. In this way, eight kinds of molds are needed to produce a car, which leads to high mold cost. The corresponding different installation fixtures and different welding positioning also greatly increase the production cost.

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