Motor Vehicle Door Hinge with Delineated Contact Surfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor vehicle door hinges with three-piece structures fail to ensure dimensionally accurate restoration of the original installation position after separation and reassembly, leading to inaccuracies in door positioning.
Innovation Solution
A two-piece motor vehicle door hinge design with delineated contact surfaces on the door and column consoles, allowing for precise alignment and secure fixing of partial units, featuring a U-shaped arrangement and tilted auxiliary surfaces for automatic centering and high surface quality, which ensures repeat accuracy and minimizes adhesion and processing effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a three-piece door hinge structure is used to enable door removal, then the door can be disassembled for painting and reassembly, but the dimensional accuracy of the original installation position cannot be restored after separation
Solution Approach 1:
The door hinge is divided into two separate consoles (door console and column console) that can be detached from each other, enabling the door to be removed from the vehicle for painting while maintaining the ability to restore the original position through complementary contact surfaces
Solution Approach 2:
The contact surfaces are designed with specific local geometric features including delineated partial areas, tilted auxiliary surfaces, and conical centering surfaces that provide automatic alignment and positioning functionality at the critical interface between door console and column console
2Ease of manufacture
If continuous contact surfaces are used for the two-piece console structure, then the alignment of partial units is difficult to achieve, but if the surfaces are not aligned, then the positioning accuracy deteriorates
Solution Approach 1:
The continuous contact surface is segmented into delineated partial areas with specific functions (main contact areas, auxiliary tilted surfaces, conical centering surfaces), making the alignment process easier while ensuring precise positioning through the geometric relationships between these segmented surfaces
Solution Approach 2:
Conical centering surfaces are introduced to provide automatic self-alignment of the door console relative to the column console, eliminating the need for complex manual alignment procedures while ensuring high positioning accuracy through the geometric constraint of the conical surfaces
3Strength
If the contact surfaces are made large to ensure stable connection, then the adhesion increases and paint flow is restricted, but if the contact surfaces are made small, then the connection stability decreases
Solution Approach 1:
The contact interface is segmented into discrete partial areas rather than a large continuous surface, reducing the total adhesion area and allowing better paint flow while maintaining connection stability through the distributed geometric constraints provided by multiple delineated contact areas and auxiliary surfaces
Solution Approach 2:
Conical centering surfaces provide stable geometric constraint and automatic alignment without requiring large flat contact areas, reducing paint restriction and adhesion issues while ensuring connection stability through the conical geometric relationship
Data Source
AI summary
A door hinge for a motor vehicle comprises a column console that can be arranged on a column of a door frame, a door console that can be attached to a motor vehicle door assigned to the door frame, wherein the door console and the column console are pin-jointed together via a hinge pin and the door console or column console is formed from two releasably connected partial units, which rest against each other at assigned contact areas. In order to provide a separable motor vehicle door hinge with an at least two-piece door or column console, which enables a dimensionally accurate restoration of an original installation position even after a separation, it is provided that the contact surfaces on the door and/or column console are formed by delineated partial surfaces.