Vehicle Door Resonance Body Layout for Speaker Sound Isolation
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Solution Overview
Problem
Existing vehicle door designs face challenges in providing an effective resonance space for speakers while minimizing installation space requirements and maintaining audio quality, while also ensuring privacy by reducing sound leakage outside the vehicle.
Innovation Solution
A vehicle door design that incorporates a resonance body component positioned within the wet space to define a closed resonance space for the speaker, effectively utilizing available installation space for improved acoustic decoupling and reduced sound leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resonance body component is fixed to the dry-space side of the carrier component, then a closed resonance space can be provided for the speaker, but the installation space requirement increases and the interior door trim design is impaired
Solution Approach 1:
The patent inverts the conventional arrangement by moving the resonance body component from the dry-space side to the wet-space side of the carrier component. This inversion allows the resonance space to be formed within the wet space, thereby reducing the demand on installation space available in the dry space and avoiding interference with interior door trim design, while still providing an effective closed resonance space for the speaker.
Solution Approach 2:
The patent utilizes the wet space dimension that was previously not considered for housing the resonance body. By transitioning the resonance body location from the dry-space side to the wet-space side, the solution effectively uses underutilized space in a different spatial dimension (the wet space volume), thereby resolving the space constraint without compromising acoustic performance.
2Reliability
If a resonance body component is added as an additional component on the carrier component, then a defined resonance space is created, but the device complexity increases
Solution Approach 1:
The patent merges the resonance body component with the carrier component or door structure by positioning it on the wet-space side, where it can be integrated into the existing door assembly architecture. This merging approach allows the resonance function to be achieved while reducing the number of separate components compared to traditional designs, thereby simplifying the overall device structure while maintaining acoustic decoupling effectiveness.
3Reliability
If the speaker is mounted on the carrier component separating wet and dry spaces, then the speaker is protected from moisture, but sound leakage outside the vehicle increases
Solution Approach 1:
The patent extracts the resonance body from the traditional dry-space location and places it in the wet space, creating a dedicated acoustic chamber that isolates the speaker's sound output. This extraction and relocation of the resonance body to the wet-space side of the carrier component effectively contains the sound within the vehicle interior, preventing sound leakage outside while maintaining speaker protection through the carrier component's moisture barrier function.
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 solution achieves enhanced audio quality by reducing disturbing noises and improving sound isolation within the vehicle, while also maintaining the design integrity and privacy by minimizing sound leakage outside.
Implementation Method 1
a resonance body component for forming a resonance space for the speaker on the vehicle door... defines a closed volume in the wet space of the vehicle door as a resonance space
Data Source
AI summary
A vehicle door includes a wet space provided within the vehicle door, which is separated from a dry space on the vehicle door, wherein the vehicle door includes at least a door skin that borders the wet space and dry space, a speaker, and a resonance body component configured to form a resonance space for the speaker, wherein the resonance body component defines a closed volume for the resonance space in the wet space of the vehicle door.