Curved Speaker Dome Structure for Stable Acoustic Output
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Solution Overview
Problem
The existing speakers in mobile electronic devices have a planar dome or support structure with low strength and reliability, affecting their acoustic performance.
Innovation Solution
A speaker design with a diaphragm having a dome with first and second extension portions fixed to a supporting member, and a suspension system with increased length and stability, along with a magnetic circuit system and cover portion for improved acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a planar dome or support structure is used, then the manufacturing is simple, but the strength and reliability are low
Solution Approach 1:
The patent applies curvature to the dome structure, transforming it from a planar to a spherical or curved surface. This curvature provides structural strength while maintaining manufacturing feasibility through molding processes. The curved dome distributes mechanical stresses more effectively than a flat surface, thereby improving reliability without significantly complicating manufacturing.
Solution Approach 2:
The patent extends the dome structure into additional spatial dimensions by adding three-dimensional extension portions that connect to the supporting member. This dimensional transformation from a simple planar surface to a multi-dimensional structure enhances the connection strength and overall reliability of the support system while remaining manufacturable through conventional molding techniques.
2Device complexity
If a planar dome structure is used, then the device complexity is low, but the acoustic performance stability is poor
Solution Approach 1:
The curved or spherical dome structure improves acoustic performance stability by providing more uniform sound wave propagation compared to a planar surface. The curvature helps distribute acoustic energy evenly, reducing distortion and improving sound quality consistency. This structural enhancement maintains reasonable device complexity while significantly improving acoustic reliability.
Solution Approach 2:
By adding three-dimensional extension portions to the dome, the patent creates a more stable structural framework that improves acoustic performance. The multi-dimensional structure provides better support for the diaphragm and voice coil assembly, ensuring consistent acoustic output while maintaining manageable device complexity through integrated design.
3Ease of manufacture
If the dome is fixedly connected at only one end, then the manufacturing is simple, but the connection strength is insufficient
Solution Approach 1:
The patent segments the connection between the dome and supporting member by adding multiple extension portions that connect at different locations. This segmentation distributes the connection points, thereby increasing overall connection strength. The segmented structure remains manufacturable through conventional molding and assembly processes, balancing strength improvement with manufacturing simplicity.
Solution Approach 2:
The patent uses three-dimensional extension portions to create multiple connection points between the dome and supporting member. These extension portions extend in different spatial directions, providing enhanced connection strength through distributed attachment points. This approach maintains assembly simplicity while significantly improving connection reliability through multi-point fixation.
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
Enhances the reliability and acoustic stability of the speaker by increasing the connection strength between the dome and supporting member, and optimizing the suspension system for better sound generation.
Implementation Method 1
a voice coil driving the diaphragm to vibrate and generate sounds
Data Source
AI summary
The present invention provides a speaker including a frame, a vibration system, and a magnetic circuit system. The vibration system includes a diaphragm, a voice coil, and a supporting member. The diaphragm includes a first suspension, a second suspension, and a dome. The dome includes a main portion, a first extension portion bending and extending from an inner periphery of the main portion in a direction close to the supporting member, and a second extension portion bending and extending from the first extension portion in the direction close to the first suspension. An outer periphery of the main portion and the second extension portion are fixed to the supporting member, and the outer periphery of the first suspension is fixed to the second extension portion. The speaker of the present invention has a better reliability and a higher stability of acoustic performance.