Multilayer Bumper Reinforcement for Impact Damping and Mounting Strength
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Solution Overview
Problem
Existing vehicle bumpers made of plastic material are prone to damage and breakage upon exceeding the stretch threshold during collisions, and there is a lack of effective methods to increase strength, absorb energy, and prevent breakage in impact areas, especially where components like sensors and clips are mounted.
Innovation Solution
A multi-layered shock absorber structure comprising a base layer, interlayer, and top layer with unidirectional fibrous structure, integrated with inserts and adhesive layers, which are cured using UV light, providing enhanced strength and impact damping effects, allowing for the mounting of brackets and clips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If bumper is made of plastic material with stretching ability, then it can absorb some energy during collision, but it breaks when stretch threshold is exceeded
Solution Approach 1:
The patent applies composite materials by combining plastic bumper material with fiber-reinforced layers (carbon fiber, glass fiber, or aramid fiber) to create a multi-layered structure. This composite construction allows the bumper to maintain flexibility for energy absorption while the fiber layers provide enhanced strength to prevent breakage when the plastic material exceeds its stretch threshold.
Solution Approach 2:
The patent segments the bumper structure into multiple functional layers: a base plastic layer for energy absorption, intermediate fiber-reinforced layers for strength enhancement, and adhesive interlayers for bonding. This segmentation allows each layer to perform its specific function optimally - the plastic layer stretches to absorb energy while the fiber layers resist breaking.
2Strength
If shock absorbing components are added to increase strength in impact areas, then breakage is prevented, but production cost increases due to varying structures for different vehicle models
Solution Approach 1:
The patent creates a universal multi-layered reinforcement structure that can be applied across different vehicle models and bumper types. The standardized fiber-reinforced layer configuration (base layer, fiber layers, adhesive layers) serves multiple functions - strengthening impact areas, providing energy absorption, and enabling sensor/clip mounting - making it applicable to various vehicle designs without requiring model-specific customizations.
3Adaptability or versatility
If slots for sensors and clips are formed during polymer injection molding, then components can be mounted on bumper, but strength in these areas is reduced making them prone to breaking
Solution Approach 1:
The patent applies local quality by placing fiber-reinforced layers specifically at locations where sensors and clips need to be mounted. The fiber layers (carbon fiber, glass fiber, or aramid fiber) are positioned to reinforce the slot areas and surrounding regions, providing localized strength enhancement exactly where components will be attached, while maintaining the overall bumper design and mounting capabilities.
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 structure enhances bumper strength, prevents breakage, and absorbs energy effectively, while being adaptable to various vehicle designs and capable of quick repair through UV exposure.
Implementation Method 1
curing mentioned layers with UV light during the application
Implementation Method 2
creates an impact damping effect in the designated mounting regions of said bumper
Data Source
Figure 1~2
Figure 3A~3C
Figure 4
AI summary
The invention relates a method in vehicles, especially on the bumpers (B), to enable mounting of sensor (S), clip (C) or absorber (A) on the inside of the bumper (B) inside of the bumper (B), which increases the strength and creates an impact damping effect in the designated mounting regions of said bumper (B) and feature characterized by in the strength-enhancing component (R), consisting of tapes with unidirectional extending fibrous structure, consisting of at least three layers, that are the base layer (10), the interlayer (20), the top layer (30), positioning at least one insert (40) between at least two consecutive layers of said layers, positioning at least one bracket (50) in order to mount components between at least two consecutive layers of said layers, curing mentioned layers with UV light during the application.