Vehicle Door Hinge Mounting Bracket for Sag-Free Alignment
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Solution Overview
Problem
In vehicles without a center pillar, the rear door tends to sag due to the load being supported by a single hinge, and adjusting the gap and attitude of the door is cumbersome and incomplete, often requiring manual force or multiple workers to align it properly.
Innovation Solution
A hinge mounting structure with a mounting bracket featuring a reference hole and slot holes, allowing for surface contact with a centering bolt, and an auxiliary hole to enhance rigidity and facilitate easy adjustment of the door's attitude, using a centering bolt with a rack gear portion for enhanced fastening and load distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single rear door hinge is installed to support the rear door, then the device complexity is reduced, but the door sagging increases and the door cannot be properly adjusted
Solution Approach 1:
The hinge system is segmented into two independent hinges instead of a single hinge, with each hinge supporting half of the door load. This segmentation distributes the mechanical stress and prevents door sagging while maintaining relatively simple device complexity
Solution Approach 2:
The mounting bracket combines multiple functions: it provides attachment points for both hinges, includes adjustment mechanisms for door alignment, and integrates reinforcement structures. This merging of functions into a single component reduces overall device complexity while solving multiple problems simultaneously
2Manufacturing precision
If the fastening holes are formed with minimal clearance to the centering bolt, then the manufacturing precision is improved, but the ease of operation for adjusting the door is worsened
Solution Approach 1:
The mounting bracket incorporates adjustable elements that allow the hinge position to be modified after door installation. This dynamic adjustment capability enables workers to correct door alignment issues without requiring precise pre-manufacturing of fastening holes, thus maintaining ease of operation while accepting reasonable manufacturing tolerances
Solution Approach 2:
The system allows changing the effective position parameters of the hinge mounting points through adjustable mounting brackets. This parameter adjustment capability compensates for manufacturing variations in fastening hole clearance and enables precise door alignment during installation and maintenance
Data Source
AI summary
A hinge mounting structure for a vehicle includes a door hinge fastened to one of a door and a vehicle body of the vehicle, a mounting bracket fastened to the other of the door and the vehicle body and hinge-connected to the door hinge, and a plurality of centering bolts passing through the mounting bracket, in which the mounting bracket is formed with a reference hole that is formed in a perfect circle and formed to come into surface contact with the perimeter of the centering bolt, and the mounting bracket is formed with slot holes and formed in the form of a long hole so that a portion thereof comes into surface contact with the perimeter of the centering bolt at a location spaced apart from the reference hole.