Vehicle Bracket Coupling Structure for Load Dispersion
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Solution Overview
Problem
The existing bracket coupling structures in vehicle front body structures concentrate load stress on bracket fasteners and hood lock members when a vertical compression force is applied, leading to potential damage and increased stress on these components.
Innovation Solution
A bracket coupling structure featuring a pair of cranked brackets that symmetrically couple the radiator support upper part with the bumper reinforcement, dispersing the load applied in the vertical compression direction to both the radiator support and bumper reinforcement, thereby reducing stress on fasteners and hood lock members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single bracket couples the hood lock to the bumper reinforcement, then the structure is simple, but the load stress concentrates on the bracket fasteners and hood lock members
Solution Approach 1:
The single bracket coupling structure is segmented into a pair of brackets (left and right) that symmetrically couple the hood lock to the bumper reinforcement. This segmentation divides the load path into multiple channels, dispersing the concentrated stress from a single fastener connection to multiple fastener connections across the pair of brackets, thereby reducing the stress on individual bracket fasteners and hood lock members while maintaining structural simplicity.
2Stress or pressure
If the first interval between coupling positions on the radiator support is shorter than the second interval on the bumper reinforcement, then the bracket forms a crank shape for better load distribution, but the manufacturing precision requirements increase
Solution Approach 1:
The bracket is designed with asymmetric coupling position intervals where the first interval (between coupling positions on the radiator support) is intentionally made shorter than the second interval (between coupling positions on the bumper reinforcement). This asymmetric configuration creates a crank-shaped bracket that optimizes load distribution paths during vertical compression, allowing the bracket to better absorb and redirect forces while maintaining feasible manufacturing precision through deliberate geometric design.
Data Source
AI summary
A bracket coupling structure includes a pair of brackets each coupling an upper part of a radiator support with a bumper R/F, and a hood lock coupled with the pair of brackets. The radiator support upper part is disposed in an upper portion of a front body structure and extends in a vehicle width direction for supporting an upper portion of a radiator body. The bumper R/F is disposed in a front portion of the front body structure and extends in the vehicle width direction. This structure provides a bracket structure which disperses a load generated when a force in the vertical compression direction acts on the hood lock in the front body structure.