Vehicle Speaker Venting System for Trim Pressure Reduction
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Solution Overview
Problem
Vehicle speakers are often housed in large enclosures that occupy significant space and add unnecessary weight, and weak sheet metal or trim pieces fail to seal off the rear wave of the speaker driver, degrading sound quality.
Innovation Solution
A venting system for vehicle speaker assemblies that includes an internal enclosure with a vent that engages with a port in a second vehicle component, allowing the rear wave to be transmitted externally, thereby reducing pressure on the trim pieces and improving phase alignment, while using a small internal enclosure to optimize space and reduce weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large enclosure is used to house the speaker assembly, then the speaker performance is improved, but the space occupied and weight increase significantly
Solution Approach 1:
The enclosure is divided into two separate enclosures: a first enclosure housing the speaker assembly and a second enclosure receiving the vent output. This segmentation allows the first enclosure to be compact while the second enclosure handles the rear wave transmission, resolving the contradiction between compact size and speaker performance.
Solution Approach 2:
A vent acts as an intermediary component between the first enclosure and the second enclosure, transmitting the rear wave output from the speaker assembly to the second enclosure. This intermediary mechanism enables the small first enclosure to achieve proper acoustic performance without directly containing all acoustic elements.
2Ease of manufacture
If weak sheet metal or trim pieces are used in the vehicle, then manufacturing cost is reduced, but the rear wave seal fails and sound quality degrades
Solution Approach 1:
The vent and port assembly serves as an intermediary acoustic transmission path that is independent of the vehicle's trim pieces. By routing the rear wave through this dedicated vent-port-channel system rather than relying on trim seals, the design achieves reliable sound quality transmission without requiring expensive or complex sealing mechanisms in the vehicle body.
Solution Approach 2:
The acoustic transmission path is segmented into distinct components (vent, port, channel) that are separately engineered for their specific functions. This segmentation allows each component to be optimized for its purpose, with the vent-port-channel system handling rear wave transmission independently from the vehicle's structural trim pieces.
3Device complexity
If the rear wave is contained within the interior enclosure, then the enclosure structure is simplified, but unwanted noise is generated and sound quality is reduced
Solution Approach 1:
The harmful rear wave energy is extracted from the first enclosure through the vent and transmitted to the second enclosure via the port and channel system. This extraction removes the unwanted acoustic energy from the interior space, preventing noise generation while maintaining a relatively simple first enclosure structure.
Solution Approach 2:
The rear wave, which would otherwise be a harmful noise source if contained, is redirected through the vent-port-channel system to the second enclosure. This converts the potentially harmful acoustic energy into a controlled transmission path that benefits overall speaker performance by preventing interior noise while utilizing the rear wave energy constructively.
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 venting system enhances sound quality by reducing unwanted noise, optimizes space usage, and minimizes weight by decoupling the rear wave from the interior cabin, ensuring optimal speaker performance even with non-rigid trim pieces.
Implementation Method 1
engagement of the vent with the port allows a rear wave generated by the vehicle speaker assembly to be transmitted from the internal enclosure through the channel to the exterior of the second vehicle component
Data Source
AI summary
A venting system for a vehicle speaker assembly includes an internal enclosure provided within a first vehicle component and having the vehicle speaker assembly disposed therein, a vent provided in the internal enclosure, and a port provided in a second vehicle component, wherein engagement of the vent with the port allows for an output generated by the vehicle speaker assembly to be transmitted from the internal enclosure to the second vehicle component.