Fender Reinforcement Protrusion for Headlamp Collision Protection
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Solution Overview
Problem
In vehicle front portion structures, the head lamp unit may collide with the front fender panel during a front-side collision, causing deformation despite no direct collision, due to the impact's concentration on the fixing point between the head lamp unit and the fender panel.
Innovation Solution
A protruding portion is integrated into the fender reinforcement on the vehicle-width-direction inner side, positioned on the rotation trajectory of the head lamp unit, to absorb and redirect the impact, thereby reducing deformation of the front fender panel by allowing the head lamp unit to collide with the reinforcement instead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the head lamp unit is fixed to the front end portion of the front fender panel, then the head lamp unit is securely positioned, but the head lamp unit may collide with the front fender panel during rotation in a collision, causing deformation
Solution Approach 1:
The protruding portion of the fender reinforcement acts as an intermediary element between the head lamp unit and the front fender panel. During collision, the head lamp unit rotates and contacts the protruding portion first, which serves as a mediator to redirect the impact force away from the front fender panel, preventing direct collision and deformation of the panel while maintaining the fixed connection of the head lamp unit.
Solution Approach 2:
The protruding portion is pre-positioned on the rotation trajectory of the head lamp unit before any collision occurs. This beforehand positioning ensures that when a collision happens and the head lamp unit rotates, the protruding portion is already in place to intercept and cushion the impact, preventing the head lamp unit from directly colliding with and deforming the front fender panel.
2Object-affected harmful factors
If a protruding portion is added to the fender reinforcement, then deformation of the front fender panel is suppressed, but the device complexity increases
Solution Approach 1:
The fender reinforcement is segmented into different functional portions: a main body portion for structural support and a protruding portion specifically positioned to intercept the rotating head lamp unit during collision. This segmentation allows the protruding portion to be optimized for collision protection while the main body maintains structural integrity, preventing deformation without requiring complete redesign of the entire reinforcement structure.
Solution Approach 2:
The protruding portion is strategically positioned at a specific location on the fender reinforcement where it intersects with the rotation trajectory of the head lamp unit. This local quality enhancement concentrates the protective function at the critical collision point rather than uniformly strengthening the entire reinforcement structure, thereby suppressing deformation with minimal added complexity.
Data Source
AI summary
A vehicle front portion structure includes a front fender panel, a fender reinforcement attached to the front fender panel, and a head lamp unit fixed to the front fender panel. A rear end portion of the head lamp unit is positioned behind a fixing point at which the front fender panel and the head lamp unit are fixed to each other in a front-rear direction of a vehicle, a protruding portion protruding to the vehicle-width-direction inner side is disposed in the fender reinforcement, and the protruding portion is positioned on a rotation trajectory of the head lamp unit at a time when the head lamp unit is rotated about a virtual line in an up-down direction of the vehicle passing through the fixing point such that the rear end portion of the head lamp unit is toward a vehicle-width-direction outer side.