Vehicle Door Structure With Segmented Beam Brackets
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Solution Overview
Problem
Conventional door structures face reduced work efficiency during conveyance due to increased component size when beams and brackets are welded and transported.
Innovation Solution
A door structure design featuring a door panel with separate first and second beam members, brackets, and a coupling member that extends in the vehicle width direction, allowing individual conveyance and attachment without pre-welding, thereby reducing component size and enhancing conveyance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If beams and brackets are welded and conveyed together, then structural strength is improved, but component size increases and work efficiency decreases
Solution Approach 1:
The door structure is divided into separate components (first beam member with first bracket, second beam member with second bracket) that are not welded together during conveyance. These segmented components are attached to the door panel separately, allowing smaller individual component sizes and improved work efficiency during assembly, while maintaining structural strength through proper attachment design.
2Stability of the object's composition
If beams and brackets are welded together, then structural rigidity is improved, but component size increases
Solution Approach 1:
The structure uses separate beam members and brackets that are not welded together, segmenting the overall structure into smaller independent components. This segmentation reduces the volume of individual components during conveyance while maintaining structural rigidity through the coupling member design that connects these segments at the door panel.
Solution Approach 2:
A coupling member is introduced as an intermediary element to connect the first bracket and second bracket. This coupling member extends in the vehicle width direction between the brackets and provides the necessary structural connection without requiring the brackets to be pre-welded together, thus maintaining rigidity while keeping component sizes small.
3Productivity
If multiple components are conveyed separately, then component size is reduced and work efficiency is improved, but structural complexity increases
Solution Approach 1:
The first bracket and second bracket are merged with their respective beam members to form integrated units (first beam member with first bracket, second beam member with second bracket). This merging reduces the number of separate components to be conveyed while maintaining the benefits of separate conveyance, and simplifies the attachment process to the door panel.
Data Source
AI summary
A door structure includes a door panel, a first beam member, a first bracket attached to a rear end portion of the first beam member, a second beam member formed separately from the first beam member, a second bracket attached to a rear end portion of the second beam member and formed separately from the first bracket, and a coupling member, to which the first bracket and the second bracket are fixed to be arranged side by side, and which is attached to the door panel. The coupling member includes an extending portion extending in a vehicle width direction between the first bracket and the second bracket.