Vehicle Door Opening Bracket Reinforcement for Side-Impact Retention
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Solution Overview
Problem
Existing vehicle door designs fail to adequately maintain the exterior door opening control during severe side impacts, particularly due to insufficient reinforcement in the lower and front parts of the door structure.
Innovation Solution
A motor vehicle side door design that incorporates two reinforcements on either side of the exterior opening control support, utilizing wedging mastic and adhesive bonding to secure the support to the frieze and intermediate reinforcements, with additional securing through screws, ensuring robust mechanical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the handle support is fixed only to the frieze reinforcement without lower part support, then the device complexity is reduced, but the strength and reliability against side impacts are insufficient
Solution Approach 1:
The reinforcement structure is segmented into multiple components: the frieze reinforcement at the upper part, the intermediate reinforcement at the lower part, and the low reinforcement. This segmentation allows each component to independently contribute to the overall strength against side impacts, with the handle support being fixed to multiple separate reinforcement elements rather than a single complex structure.
Solution Approach 2:
Different reinforcement elements are strategically positioned at specific locations: the frieze reinforcement at the upper door box, the intermediate reinforcement at the lower door box, and the low reinforcement at the bottom. This local quality approach ensures that each area of the door box receives appropriate reinforcement where needed most, particularly protecting the handle support attachment zones.
2Reliability
If reinforcement elements are added to maintain the exterior door opening control during side impacts, then the strength and reliability are improved, but the device complexity increases
Solution Approach 1:
Multiple reinforcement elements (frieze reinforcement, intermediate reinforcement, and low reinforcement) are combined to work together as an integrated reinforcement system. The handle support is fixed to multiple of these reinforcement elements simultaneously, creating a distributed attachment system that enhances reliability without requiring any single element to be overly complex.
Solution Approach 2:
The reinforcement strategy extends across multiple dimensions of the door box structure - vertically from the upper frieze reinforcement to the lower intermediate reinforcement and low reinforcement, and horizontally across the door box width. This multi-dimensional reinforcement approach ensures comprehensive protection of the handle support from various impact directions.
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a motor vehicle side door having a box under a window portion, the box comprising: • - a front wall and a rear wall, • - a border reinforcement (1) connecting the front wall with the rear wall at the top of the box, along the window portion, • - an intermediate reinforcement (2) arranged longitudinally inside the door box, and extending between the front wall and the rear wall, separated from the border reinforcement (1), • - an external door opening control bracket (5) arranged inside the door box, the external door opening control bracket (5) being arranged between the border reinforcement (1) and the intermediate reinforcement (2) and having regions for attaching to the border reinforcement (1) and to the intermediate reinforcement (2).