Vehicle Bumper Wheel Arch Bracket Stiffness Design
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Solution Overview
Problem
The existing vehicle bumper structure restricts the design freedom of fender components and flanges, and lacks sufficient stiffness to withstand wind pressure, particularly due to the flat closing plate and separate flange configuration.
Innovation Solution
A vehicle bumper structure with a wheel arch bracket integrally formed with the bumper side part, featuring a component supporting portion, flange mount portion, and vertical walls that can be adjusted to fit various fender components, enhancing stiffness and design flexibility while reducing bulge caused by wind pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a flat closing plate is used inside the bumper side part, then the structure is simple, but the stiffness for supporting fender components is insufficient and wind pressure causes bulge
Solution Approach 1:
The closing plate is changed from a flat shape to a curved shape that conforms to the inner surface of the bumper side part. This curvature provides structural reinforcement against wind pressure while maintaining aesthetic appearance, eliminating the bulge problem without requiring additional complex support structures
Solution Approach 2:
The closing plate is extended in the vehicle width direction to create a three-dimensional structure with increased surface area. This dimensional expansion provides both structural stiffness to resist wind pressure and aesthetic coverage, solving the contradiction between simplicity and strength
2Adaptability or versatility
If the flange position is restricted by the fender component shape, then the fender component can be attached, but the design freedom of both flange and fender component is reduced
Solution Approach 1:
The flange is designed with a universal mounting structure that can accommodate various fender component shapes and sizes. By providing multiple mounting hole positions and a flexible attachment mechanism, the flange can adapt to different design requirements while maintaining ease of manufacture through standardized attachment procedures
Data Source
AI summary
A rear bumper includes a bumper central part configured to cover a rear end portion of a vehicle, a pair of bumper side parts configured to extend from both ends of the bumper central part toward respective wheel housings, a wheel arch portion disposed at an end of each of the bumper side parts, a flange formed integrally with an inner surface of each of the bumper side parts, and a wheel arch bracket disposed on the flange and configured to support fender components. The wheel arch bracket includes a component supporting portion configured to support the fender components, a flange mount portion disposed opposite to the component supporting portion and attached to the flange, and a plurality of vertical walls configured to extend from the component supporting portion toward the flange mount portion.