Vehicle Panel Speaker Structure for Stronger Low-Frequency Sound
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Solution Overview
Problem
Conventional sound apparatuses in vehicles, particularly those using coil-type devices, face limitations in producing realistic or stereo sounds due to size constraints and space limitations, which hinder the enhancement of sound characteristics and sound pressure levels, especially in the low-pitched sound band.
Innovation Solution
A sound apparatus and vehicular apparatus design that incorporates a sound generating module with a vibration member having holes and a vibration apparatus, configured to enhance sound characteristics and sound pressure levels by utilizing the vehicle's interior material as a vibration plate, and an enclosure with an internal space to optimize sound output, including a bimorph structure and a coupling member to minimize vibration transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of speakers is increased to output stereo sound, then sound quality is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent merges the voice coil and magnet assembly into a single integrated unit, where the magnet is positioned within the voice coil structure. This consolidation allows the speaker to achieve compact dimensions while maintaining the functional requirements for stereo sound output, thereby improving sound quality without proportionally increasing device complexity
Solution Approach 2:
The patent employs a nested structure where the magnet is placed inside the voice coil assembly, and the entire speaker unit is integrated into the vehicle's interior panel structure. This nesting approach maximizes space utilization and allows multiple speakers to be arranged in a compact configuration, enabling stereo sound output without excessive space requirements
2Ease of operation
If compact speakers are used to meet space limitations, then ease of installation is improved, but sound pressure level and sound characteristics deteriorate
Solution Approach 1:
The patent utilizes a flexible diaphragm material that can dynamically respond to audio signals across different frequency ranges. The diaphragm is designed with specific elasticity and damping characteristics that allow compact speakers to generate sufficient sound pressure levels while maintaining ease of installation in vehicle interiors
Solution Approach 2:
The patent optimizes physical parameters of the speaker components, including the density and thickness of the diaphragm, the magnetic field strength, and the voice coil wire gauge. These parameter adjustments enable compact speakers to achieve improved sound pressure levels and frequency response characteristics without compromising their compact size and ease of installation
3Ease of manufacture
If coil type devices are used for speakers, then ease of manufacture is improved, but sound characteristics and low-pitched sound band performance worsen
Solution Approach 1:
The patent employs composite material construction for the speaker components, including a diaphragm made from composite materials that enhance bass response, and a magnet assembly that combines different magnetic materials to improve low-frequency performance. These composite structures maintain manufacturability while significantly improving sound characteristics, particularly in the low-pitched sound band
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 effectively enhances sound characteristics and sound pressure levels across the sound spectrum, including the low-pitched sound band, by optimizing the vibration mechanism and enclosure design, thereby improving the overall audio experience in vehicles.
Implementation Method 1
a vibration apparatus configured at the vibration member
Implementation Method 2
a vibration member including at least one or more holes and a vibration apparatus configured at the vibration member
Data Source
AI summary
Discussed is a sound apparatus that can include a sound generating module and an enclosure at the sound generating module with an internal space therebetween. The sound generating module can include a vibration member including at least one or more holes and a vibration apparatus configured at the vibration member.