Fender Bracket With Bent Legs For Stable Impact Absorption
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Solution Overview
Problem
Existing fender supporting structures face challenges in achieving stable impact absorption due to variability in collision positions and energies, as they are not optimized for efficient energy dispersion during vehicle collisions.
Innovation Solution
A fender supporting portion structure featuring vehicle body skeleton portions with first and second supporting surfaces facing upward, hat-shaped brackets for energy absorption, and varying leg lengths and angles to facilitate stable deformation and energy absorption, allowing the bracket to deform preferentially at upper portions where bent regions are formed, thereby absorbing collision energy effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional fender bracket structure is used, then the structure is simple and easy to manufacture, but the impact absorption is unstable due to variability in collision positions and energies
Solution Approach 1:
The bracket is divided into multiple supporting leg portions (first supporting leg portion and second supporting leg portion) with different lengths and deformation characteristics. Each leg portion is designed to deform at different stages of impact, creating a progressive energy absorption mechanism that stabilizes performance across varying collision conditions.
Solution Approach 2:
Different regions of the bracket are designed with distinct deformation properties. The first supporting leg portion has a first bent portion that deforms at smaller impact energies, while the second supporting leg portion has a second bent portion that deforms at larger impact energies. This local differentiation ensures stable energy absorption regardless of collision intensity.
2Reliability
If the bracket is designed to deform easily to absorb energy, then impact absorption is improved, but the structural strength and rigidity are reduced
Solution Approach 1:
The bracket transitions from a static rigid structure to a dynamic energy-absorbing structure through controlled deformation. The bent portions are strategically designed to remain rigid during normal operation but deform progressively during impact, converting the structure from purely load-bearing to load-managing that dissipates energy through controlled structural changes.
Solution Approach 2:
The physical parameters of the bracket (specifically the geometry of bent portions and leg lengths) are optimized to change deformation characteristics. The first bent portion is positioned and dimensioned to deform at lower impact energies, while the second bent portion is configured to engage at higher energies, creating a staged parameter-based response to varying impact conditions.
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 enables stable and efficient impact absorption by allowing the bracket to deform in a controlled manner, effectively utilizing limited space and improving energy absorption performance, even under varying collision conditions.
Implementation Method 1
the bracket to deform preferentially at upper portions where bent regions are formed, thereby absorbing collision energy effectively
Implementation Method 2
brackets for energy absorption that cause the vehicle body skeleton portions to support inner side end portions of upper portions of fender panels
Data Source
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AI summary
A fender supporting portion structure is provided to be able to devise stable energy absorption. At a bracket (40), a length in a vehicle vertical direction of a second supporting leg portion (50) is set to be longer than a length in the vehicle vertical direction of a first supporting leg portion (48). A height position in the vehicle vertical direction of second supporting portion (34), at which the second supporting leg portion (50) is supported via a second vehicle body side mounting portion (46), is set to be lower than that of a first supporting portion (32), at which the first supporting leg portion (48) is supported via a first vehicle body side mounting portion (44). At the bracket (40), a first bent portion (56) is formed at an upper portion of the first supporting leg portion (48), and a second bent portion (60) is formed at an upper portion of the second supporting leg portion (50). The first bent portion (56) and the second supporting leg portion (50) are bent so as to be convex toward sides of moving apart from one another. A region of the first supporting leg portion (48), which region is further toward a lower side than the first bent portion (56), and a region of the second supporting leg portion (50), which region is further toward a lower side than the second bent portion (60), are connected by a connecting member (64).