Speaker Suspension Segmentation for Distortion Reduction
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Solution Overview
Problem
Conventional speakers experience distortion and deformation due to the force applied on the suspension by vibrating voice coil members, which affects sound quality.
Innovation Solution
The speaker design incorporates a suspension with symmetrical separating portions and connecting portions that engage with the voice coil members, featuring fixing and supporting portions to prevent distortion by distributing the force effectively, and a magnetic circuit system with a yoke, magnet, and engaging bars to stabilize the suspension on the base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the suspension structure is simplified to reduce manufacturing complexity, then the device complexity is reduced, but the distortion and deformation of the suspension increases due to concentrated force on limited supporting portions
Solution Approach 1:
The suspension is divided into multiple functional segments: a first supporting portion that engages with the voice coil member, a connecting portion that links the supporting portion to the base, and a second supporting portion that provides additional engagement points. This segmentation distributes the mechanical force from the voice coil across multiple discrete locations on the base, reducing localized stress and deformation while maintaining structural simplicity.
Solution Approach 2:
The suspension structure incorporates different geometric configurations at different locations to optimize local force distribution. The connecting portion features specific angle ranges (45-60 degrees) and length ratios that are optimized for the local stress conditions experienced during voice coil vibration, allowing the structure to resist deformation where needed while remaining simple overall.
2Stability of the object's composition
If the suspension is designed with multiple supporting portions to distribute force and reduce distortion, then the suspension stability is improved, but the device complexity increases due to additional structural components
Solution Approach 1:
The suspension integrates multiple functions into a single continuous structure rather than using separate components. The first supporting portion, connecting portion, and second supporting portion form one monolithic suspension element that provides both mechanical support and electrical connection (through the conductive material), eliminating the need for additional fasteners, brackets, or separate mounting components.
Solution Approach 2:
The suspension structure serves multiple functions simultaneously: it provides mechanical support for the voice coil member, distributes forces to the base, maintains the voice coil within the magnetic gap, and conducts electrical current to the voice coil. This multi-functionality reduces the overall device complexity by eliminating the need for separate components for each function.
3Manufacturing precision
If the connecting portion has optimized angles and dimensions to minimize suspension deformation, then the manufacturing precision requirements increase, but the sound quality improves due to reduced distortion
Solution Approach 1:
The design specifies optimized parameter ranges for the connecting portion, including angle ranges (45-60 degrees) and length ratios (0.5-1.5 times the voice coil radius), rather than requiring single precise values. This approach balances manufacturing feasibility with performance, allowing standard tolerances to achieve sufficient force distribution while minimizing suspension deformation during operation.
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
This design minimizes distortion and deformation of the suspension during vibration, enhancing sound quality by stabilizing the suspension and ensuring efficient energy transfer from the voice coil members to the diaphragm.
Implementation Method 1
a pair of voice coil members (5) connecting with the diaphragm (3) for driving the diaphragm (3) to vibrate along a vibrating direction
Implementation Method 2
a force generated from the voice coil members is mainly applied on the supporting portions of the suspension, thereby increasing the distortion or deformation of the suspension
Data Source
AI summary
A speaker includes a base defining a pair of receiving cavities separated from each other in a longitudinal direction and an engaging portion disposed between the pair of receiving cavities, a pair of magnetic circuit systems received into the pair of the receiving cavities, a diaphragm attached on the base, a pair of voice coil members connecting with the diaphragm, and a suspension mounted on the base. The suspension defines a pair of separating portions separated from each other in a lateral direction. Each separating portion defines a fixing portion engaging with the engaging portion of the base, a pair of connecting portions extending from two ends of the fixing portion and towards the diaphragm, and a pair of supporting portions connecting with the connecting portion for engaging with the pair of voice coil members, respectively.