Speaker Centering Support Stabilizes Voice Coil Motion
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Solution Overview
Problem
Conventional micro-speakers with a single sounding diaphragm design experience motion instability due to voice coil sway, affecting sound quality, and require separate assembly of dome and centering support pieces, which complicates the assembly process and increases costs.
Innovation Solution
A speaker design featuring a stereoscopically shaped centering support member that connects the upper and lower diaphragms, replacing the need for a dome and improving assembly efficiency, while enhancing low-frequency performance by stabilizing the vibration unit through a combined diaphragm structure and magnetic circuit optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single sounding diaphragm design is used, then the speaker structure is simple, but the voice coil sways during vibration causing motion instability and affecting sound quality
Solution Approach 1:
The sounding diaphragm is divided into multiple diaphragms (first diaphragm, second diaphragm, third diaphragm, fourth diaphragm) arranged in a specific configuration. This segmentation provides mutual support and constraint among the diaphragms, preventing voice coil sway while maintaining structural integrity and improving motion stability during vibration.
2Ease of manufacture
If dome and centering support piece are assembled separately, then each component can be optimized independently, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The dome and centering support piece are merged into an integrated structure where the centering support piece is formed as an integral part of the dome structure. This combination maintains the functional advantages of both components while eliminating separate assembly steps, thereby improving productivity and reducing assembly complexity.
3Adaptability or versatility
If conventional separate assembly of dome and centering support piece is used, then component design is flexible, but assembly complexity increases and costs increase
Solution Approach 1:
The dome and centering support piece are combined into a single integrated component structure. This merger maintains the functional versatility and design flexibility of having separate optimized components while eliminating the complexity of assembling multiple parts, thereby reducing assembly steps and manufacturing costs.
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 new speaker design stabilizes the vibration unit, improves sound quality, particularly in low-frequency performance, and reduces assembly complexity and costs by integrating the centering support member and optimizing magnetic field induction.
Implementation Method 1
a voice coil configured to drive the diaphragm to vibrate
Implementation Method 2
The magnetic circuit unit includes a yoke, a main magnet fixed to the yoke, an auxiliary magnet surrounding the main magnet
Data Source
AI summary
A speaker includes a holder having a receiving space, a magnetic circuit unit and a vibration unit. The vibration unit includes a diaphragm, a voice coil driving the diaphragm to vibrate, and a centering support member. The centering support member includes a connecting portion between the upper diaphragm and the voice coil, extension portions extending from two ends of the connecting portion and towards the magnetic circuit unit, and body portions each formed by extending from an tail end of each extension portion while being bent in a direction facing away from the extension portion. The connecting portion is interposed between the diaphragm and the voice coil. The extension portion is located between the magnetic circuit unit and the holder. An end the body portion is connected to the holder, and the other end is connected to the voice coil to support the voice coil.