Vehicle Side Body Engagement Structure to Prevent Door Flip-Up
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle side body structures face the issue of the side door flipping up and entering the cabin when subjected to a large impact load from the lateral side, potentially detaching from the side sill reinforcement.
Innovation Solution
A vehicle side body structure with a side door and side sill reinforcement featuring engagement sections that engage and bend as a fulcrum to prevent flipping, utilizing engagement means and support members to stabilize the door during impact, including a first and second engaged section and a support member with reinforced sections to maintain contact with the sill reinforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single engagement section is used to connect the side door and side sill reinforcement, then the structure is simple, but the side door may detach during large impact loads
Solution Approach 1:
The engagement structure is divided into two separate engagement sections: a first engagement section that engages the side sill reinforcement with the side door in a normal state, and a second engagement section that engages when the side door deforms during impact. This segmentation allows each section to perform its specific function, preventing detachment while maintaining structural simplicity.
2Force
If the side door is designed to abut the side sill reinforcement during impact, then impact load is dispersed, but the lower end portion may flip up and enter the cabin
Solution Approach 1:
The engagement sections are pre-configured to engage automatically when the side door deforms during impact. The first engagement section maintains normal positioning, while the second engagement section activates to prevent flipping up, creating a preliminary anti-action against the harmful flipping motion before it can compromise cabin safety.
3Volume of moving object
If the engagement sections are positioned close to each other, then the structure is compact, but the engagement sections may interfere with each other during door deformation
Solution Approach 1:
The first and second engagement sections are positioned asymmetrically relative to each other along the side door. This asymmetric arrangement ensures that during door deformation, the sections engage in a sequential manner without interfering with each other's operation, while maintaining a compact overall structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The structure effectively suppresses the lower end portion of the side door from flipping up, maintaining stability and preventing detachment from the side sill reinforcement, thereby enhancing safety by distributing impact loads effectively.
Implementation Method 1
the engagement means is bent with the first engagement section being a fulcrum, so as to prevent the side door from flipping up
Data Source
AI summary
In a vehicle side body structure, when a force that deforms a side door inward in a vehicle width direction acts on the side door, a second engagement section enters a clearance in the vehicle width direction of the side door, a first engagement section and the second engagement section respectively engage with a first engaged section and a second engaged section, and an engagement structure bent with the first engagement section serving as a fulcrum, so as to prevent the side door from flipping up.