Vehicle Baffle With Modular Insert For Noise Dampening
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Solution Overview
Problem
Existing baffle designs for reducing noise and vibrations in hollow structures, such as vehicle frames, are inflexible and require expensive tooling changes to modify their weight and thickness for specific applications, limiting their customization and effectiveness across different frequency ranges.
Innovation Solution
Incorporating a metal insert within the baffle's carrier, which can be customized in size, shape, and material without altering the exterior dimensions, allowing for enhanced structural rigidity and noise/vibration dampening performance without the need for costly tooling changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the weight and thickness of the rigid carrier are increased to improve noise and vibration dampening, then the baffle's structural rigidity and dampening performance are improved, but the manufacturing flexibility and adaptability are reduced due to expensive tooling changes
Solution Approach 1:
The rigid carrier is segmented into a base carrier and removable inserts. This allows the baffle to be divided into modular components where inserts can be easily exchanged to change weight and dampening characteristics without modifying the base carrier or requiring expensive tooling changes.
Solution Approach 2:
The insert allows for parameter changes in the baffle's weight, density, and thickness by simply changing the insert configuration rather than redesigning the entire rigid carrier. This enables easy adjustment of dampening performance for different frequency ranges without tooling changes.
2Reliability
If the baffle design is customized for a particular application by modifying the rigid carrier, then the performance is optimized for specific frequency ranges, but the manufacturing time and cost increase due to tooling changes
Solution Approach 1:
By segmenting the baffle into a standard base carrier and application-specific inserts, customization is achieved through simple insert selection rather than complete redesign. This maintains manufacturing efficiency while optimizing performance for specific frequency ranges.
Solution Approach 2:
The base carrier is designed as a universal component that can accommodate multiple insert types for different applications. This multi-functionality allows a single base carrier design to serve multiple purposes across different frequency ranges and applications.
3Object-affected harmful factors
If the exterior dimensions of the baffle are altered to improve noise and vibration reduction, then the dampening effectiveness is enhanced, but the compatibility with existing cavity spaces is reduced
Solution Approach 1:
The insert is nested within the rigid carrier, allowing the enhanced dampening structure to be contained within the original exterior dimensions. This nested configuration provides improved noise reduction while maintaining compatibility with existing cavity spaces.
Solution Approach 2:
Instead of changing exterior dimensions, the insert utilizes internal dimensionality within the rigid carrier to enhance dampening performance. The weight and density adjustments are achieved through internal insert configuration rather than external dimensional changes.
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
This approach enables tailored noise and vibration reduction across specific frequency ranges, enhancing the baffle's performance while maintaining constant exterior dimensions, thus facilitating customization without increasing manufacturing time or costs.
Implementation Method 1
a sealer, such as an expanding foam, expands to fill in space around the baffle
Implementation Method 2
providing valued vibration dampening and noise abatement
Data Source
AI summary
A baffle is provided that includes at least one carrier and a sealer disposed in a recess. When placed in a cavity, such as a vehicle cavity, sealer also expands into the cavity to seal the cavity. Baffle can be modified by including an insert within carrier to increase the weight, density, and structural rigidity of baffle, without altering the exterior dimensions of baffle. A baffle that includes an insert can be customized based on a particular application, without requiring time-consuming and expensive tooling changes.