Segmented Elastic Member Group for Low-Profile Voice Coil Centering
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Solution Overview
Problem
Existing loudspeaker designs face challenges with complicated manufacturing processes for centering supporting sheets, increased height due to sheet-shaped elastic wave structures, poor compliance leading to insufficient displacement, and lack of adaptability to different environments, affecting voice coil vibration and product performance.
Innovation Solution
An application device featuring an elastic member group with multiple elastic members, each with distinct connecting portions and deformation portions, allowing for adaptive changes in structure and material to enhance compatibility, simplify manufacturing, and maintain compliance during large displacements without affecting vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sheet-shaped elastic wave structure is used as the centering supporting sheet, then the voice coil can be prevented from polarizing, but the manufacturing process becomes complicated and the height of the loudspeaker increases
Solution Approach 1:
The centering supporting sheet is divided into multiple independent elastic members (first elastic member, second elastic member, third elastic member, fourth elastic member) arranged at different positions. Each elastic member independently supports the voice coil, simplifying the manufacturing of individual components while collectively preventing polarization through their distributed arrangement.
Solution Approach 2:
The elastic members are designed with specific geometric shapes (U-shapes, arches) that provide structural functionality in multiple dimensions. The U-shaped elastic members extend in radial directions, while arch-shaped members provide vertical support, creating a multi-dimensional support system that prevents polarization without requiring a complex sheet structure.
2Reliability
If a sheet-shaped elastic wave structure is used as the centering supporting sheet, then the voice coil can be prevented from polarizing, but the height of the loudspeaker increases in the vertical direction
Solution Approach 1:
The support function is segmented into multiple discrete elastic members positioned at different radial locations, eliminating the need for a continuous sheet structure that would increase height. Each member provides localized support, achieving polarization prevention with minimal vertical space occupation.
Solution Approach 2:
The elastic members are designed as thin, flexible components (U-shaped and arch-shaped) that provide structural support with minimal thickness. These flexible members can deform to accommodate voice coil movement while maintaining their centering function, preventing polarization without adding significant height to the loudspeaker assembly.
3Reliability
If a sheet-shaped elastic wave structure is used, then the voice coil can be prevented from polarizing, but the compliance becomes worse when the voice coil has large vibration displacement
Solution Approach 1:
The elastic members are designed with dynamic characteristics that allow them to adapt their stiffness based on displacement magnitude. The U-shaped and arch-shaped configurations provide high compliance for small vibrations while maintaining structural integrity for large displacements, preventing polarization across the full range of motion.
Solution Approach 2:
The geometric parameters of the elastic members (curvature radius, thickness, material properties) are optimized to provide variable compliance. The arch-shaped members with specific curvature radii and the U-shaped members with varying thicknesses create a system that maintains appropriate compliance levels across different vibration amplitudes, ensuring both polarization prevention and adequate displacement capability.
4Reliability
If a sheet-shaped elastic wave structure is used, then the voice coil can be prevented from polarizing, but the centering supporting sheet cannot be adaptively changed according to different internal environments
Solution Approach 1:
The centering support system is segmented into multiple independent elastic members with different geometric configurations (U-shaped, arch-shaped). This segmentation allows selective arrangement and configuration of members based on specific internal environment requirements, enabling adaptation to different loudspeaker designs while collectively preventing polarization.
Solution Approach 2:
The elastic members are designed with universal geometric patterns (U-shapes and arches) that can be adapted to various internal environments. By adjusting the number, position, and specific dimensions of these standardized members, the system can be customized for different loudspeaker configurations while maintaining the polarization prevention function across diverse applications.
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 elastic member group provides good compatibility, simplifies manufacturing, reduces product height, and ensures sufficient displacement while optimizing performance by maintaining compliance during large vibrations, thus enhancing the loudspeaker's structural design.
Implementation Method 1
each of the elastic members includes a first connecting portion, a second connecting portion, and a deformation portion between the first connecting portion and the second connecting portion
Data Source
AI summary
Disclosed is an application device, comprising an elastic member group comprising a plurality of elastic members each comprises first and second connecting portions and a deformation portion therebetween, the first and second connecting portions are respectively connected to different members in the application device, the different members are movable or fixed relative to each other, the deformation portion is formed by extending from a first end to a second end in a straight line and/or a curve in same or different directions, forming manner and/or a cross-sectional size and/or material of at least one elastic member are different from other elastic members. The elastic members can be adaptively changed according to different internal environments of the application device, have good compatibility and are simple and convenient to manufacture, facilitate the thinning of products, maintain good compliance, provide sufficient displacement and do not affect the vibration of a vibration unit.