Vehicle Fascia Integral Energy Absorber Design
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Solution Overview
Problem
Existing vehicle bumper systems require separate energy absorbers, which increase complexity, weight, and assembly time, and do not efficiently dissipate impact energy without additional components.
Innovation Solution
A fascia with an integral energy absorber portion that extends rearward and forward, eliminating the need for a separate energy absorber by integrating it into the fascia, which can be secured adjacent to an impact beam and covered by a valence, allowing for energy dissipation and reduced packaging space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate energy absorber is used in the bumper system, then energy dissipation function is provided, but device complexity increases
Solution Approach 1:
The energy absorber is integrated into the fascia as a single molded component, combining the energy absorption function with the fascia structure. This eliminates the need for separate energy absorber components and their associated mounting hardware, thereby reducing device complexity while maintaining the energy dissipation function.
2Reliability
If a separate energy absorber is used in the bumper system, then energy dissipation function is provided, but weight increases
Solution Approach 1:
By integrating the energy absorber into the fascia, the total component count is reduced, eliminating redundant materials and mounting hardware. The energy absorber is formed as part of the fascia structure, reducing overall bumper system weight while maintaining energy dissipation capability.
3Reliability
If a separate energy absorber is used in the bumper system, then energy dissipation function is provided, but assembly time increases
Solution Approach 1:
The energy absorber is molded as an integral part of the fascia, eliminating separate assembly steps for installing energy absorber components. This integration significantly reduces assembly time and simplifies the manufacturing process while maintaining the energy dissipation function.
4Volume of stationary object
If fascia is positioned immediately adjacent to impact beam with small gap, then packaging space is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a controlled gap dimension of approximately 5 millimeters between the impact beam and the energy absorber portion. This parameter optimization allows for reduced packaging space while maintaining manufacturability through standard tolerances, balancing volume reduction with manufacturing precision requirements.
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 integrated energy absorber in the fascia reduces complexity, weight, and assembly time while effectively dissipating impact energy, protecting vehicle components without the need for additional absorbers, and simplifying logistics and tooling costs.
Implementation Method 1
a fascia with an integral energy absorber portion configured to dissipate a predetermined amount of energy due to an impact upon the fascia
Data Source
AI summary
A bumper system for a vehicle includes a fascia having an integral energy absorber portion configured to dissipate an amount of energy due to an impact upon the fascia. The energy absorber portion includes multiple spaced formations configured to extend rearward and forward when the bumper system is installed on the vehicle. The bumper system may also include an impact beam. The fascia can be secured to the vehicle so that the fascia is positioned immediately adjacent the impact beam. The bumper system can also include a valence that covers the energy absorber portion from view, so that only a remaining display portion of the bumper system is visible from outside of the vehicle.