Wire Harness Soundproofing Member With Variable Hole Regions
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Solution Overview
Problem
Conventional wire harness assemblies have limited frequency ranges for sound absorption due to uniformly distributed through holes, restricting the improvement of soundproofing properties.
Innovation Solution
The wire harness assembly features through holes distributed in varying opening regions with different opening ratios per unit area, allowing for improved sound absorption across a wider frequency range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If through holes are uniformly distributed over the entire surface of the soundproofing member, then the structure is simple and easy to manufacture, but the frequency range for sound absorption is limited
Solution Approach 1:
The patent applies local quality by creating different opening regions with distinct through hole distributions. Specifically, a first opening region has through holes with a first opening ratio, while a second opening region has through holes with a second opening ratio that differs from the first. This allows different portions of the soundproofing member to absorb sounds at different frequency ranges, thereby expanding the overall frequency range for sound absorption while maintaining a relatively simple manufacturing process.
2Stability of the object's composition
If through holes are uniformly distributed, then the opening ratio is consistent across the surface, but the soundproofing properties are limited to a specific frequency range
Solution Approach 1:
The patent implements local quality by establishing multiple opening regions with different through hole characteristics. The first opening region contains through holes with a first opening ratio, while the second opening region contains through holes with a second opening ratio. This non-uniform distribution enables the soundproofing member to effectively absorb sounds across a broader frequency spectrum, improving soundproofing performance while maintaining controlled composition stability within each local region.
3Device complexity
If the soundproofing member uses a single uniform structure, then the device complexity is low, but the sound absorption capability is restricted
Solution Approach 1:
The patent applies local quality by dividing the soundproofing member into multiple opening regions with different through hole distributions. The first opening region has through holes with a first opening ratio, and the second opening region has through holes with a second opening ratio. This approach enhances sound absorption capability across different frequency ranges while keeping the overall structural complexity relatively low, as the basic structure remains similar with only the through hole distribution varying.
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 configuration enhances soundproofing properties by enabling sound absorption across a broader frequency range while maintaining structural simplicity and protecting the electric wires.
Implementation Method 1
By providing the plurality of through holes in the sheet-shaped body, a sound can be absorbed in a wider frequency range as compared with a sheet-shaped body having no through holes, and soundproofing properties can be improved
Data Source
AI summary
A wire harness assembly includes: a wire harness including an electric wire and a connector electrically connected to an end of the electric wire; and a soundproofing member including a base and a cover integrally provided on one surface side of the base with the wire harness being arranged between the base and the cover. At least one of the base or the cover includes through holes. The through holes are arranged to be distributed to opening regions. The opening regions are different from each other in opening ratios per unit area of the through holes in the opening regions.