Integrated Vehicle Bumper Reinforcement for Lightweight Rigidity
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Solution Overview
Problem
Existing vehicle bumpers face challenges with weight reduction and rigidity, as they require heavy steel backbeams and separate fixing components, leading to increased assembly time, costs, and reduced design freedom due to space requirements.
Innovation Solution
A vehicle bumper design that incorporates a reinforcement part formed through a long fiber injection (LFI) process, which is integrated into the panel part to enhance rigidity without the need for a separate backbeam, thereby reducing weight and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel backbeam is used to reinforce the panel, then rigidity is improved, but weight increases
Solution Approach 1:
The patent applies composite materials by combining polymer matrix with long glass fibers (LGF) to create a reinforcement part that provides steel-level rigidity while significantly reducing weight. The composite structure allows the panel to achieve high strength-to-weight ratio, eliminating the need for heavy steel backbeams while maintaining structural integrity during collision.
Solution Approach 2:
The patent changes the material parameters from traditional steel to composite materials with specific fiber orientation and distribution. By controlling the long glass fiber alignment and injection parameters, the reinforcement part achieves optimized mechanical properties including rigidity and impact resistance, while maintaining lighter weight compared to steel alternatives.
2Strength
If a separate backbeam with fixing components is used, then rigidity is improved, but device complexity increases
Solution Approach 1:
The patent merges the backbeam function directly into the panel structure by injecting long glass fibers into the panel's non-exposed region. This integration eliminates separate fixing components such as brackets and stays, reducing assembly complexity while maintaining rigidity. The reinforcement part becomes an intrinsic component of the panel rather than an add-on element.
Solution Approach 2:
The reinforcement part serves multiple functions simultaneously: it provides structural rigidity, acts as impact absorption element, and eliminates the need for separate fixing mechanisms. This multi-functionality reduces the overall number of components and simplifies the bumper assembly process while maintaining structural performance.
3Strength
If a separate backbeam with fixing components is used, then rigidity is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines the backbeam reinforcement function into the panel manufacturing process itself through long fiber injection. This integration eliminates the need for separate procurement, assembly, and fixing of backbeam components, thereby reducing manufacturing costs while maintaining rigidity. The reinforcement is created as part of the panel production workflow.
Solution Approach 2:
The patent eliminates unnecessary fixing components such as brackets and stays that add cost without providing additional functional value. By using long glass fiber injection, the reinforcement is achieved through material optimization rather than additional hardware, reducing overall manufacturing costs while maintaining structural performance.
4Strength
If a separate backbeam with fixing components is used, then rigidity is improved, but space requirement increases
Solution Approach 1:
The patent nests the reinforcement part within the panel's non-exposed region, utilizing the existing structural space efficiently. The long glass fibers are injected into and integrated within the panel thickness, eliminating the need for additional external space that would be required for separate backbeam components and their fixings, thus preserving design freedom.
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 proposed solution achieves weight reduction and maintains rigidity comparable to traditional backbeams, thereby decreasing manufacturing costs and time, while also enhancing design flexibility by eliminating the need for separate fixing components and reducing internal space requirements.
Implementation Method 1
a reinforcement part which is disposed on the panel part through a long fiber injection (LFI) process
Implementation Method 2
the reinforcement part may be formed through a foaming process after the non-exposed region of the panel part is coated with the reinforcement part
Data Source
AI summary
A vehicle bumper and method therefor are provided. The vehicle bumper includes a panel part forming a part of a vehicle body of a vehicle, and a reinforcement part which is disposed on the panel part through a long fiber injection (LFI) process. The reinforcement part reinforces rigidity of the panel part.