Voice Coil Polarization Prevention via Winding Wire Stabilizer
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Solution Overview
Problem
Existing sound production devices face polarization issues with voice coils at large amplitudes, leading to hindered vibration and inadequate displacement, which traditional system stabilization components cannot effectively address.
Innovation Solution
A novel sound production device featuring a line-like system stabilization component formed by winding a metal wire, with a first connection part bonded to the voice coil, a deformation part, and a second connection part connected to the housing, allowing for increased deformation displacement in the vertical direction while minimizing horizontal resistance to prevent polarization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional one-piece sheet structure system stabilization component is used, then the voice coil polarization is prevented, but the component causes resonance and has limited displacement capability at large amplitudes
Solution Approach 1:
The system stabilization component is divided into multiple independent wire elements instead of using a traditional one-piece sheet structure. Each wire element can deform independently, eliminating the resonance issues caused by the rigid sheet structure while maintaining the polarization prevention function. The segmented wire structure allows for better energy absorption and reduced THD spikes.
Solution Approach 2:
The invention changes the structural parameters of the system stabilization component from a rigid sheet form to a flexible wire form with specific deformation characteristics. The wire structure has different stiffness and compliance parameters that allow it to accommodate large amplitude vibrations without causing resonance, while still providing sufficient radial support to prevent voice coil polarization.
2Reliability
If the system stabilization component is made rigid to prevent polarization, then polarization is avoided, but the component hinders free vibration of the voice coil at large amplitudes
Solution Approach 1:
The system stabilization component transitions from a static rigid sheet structure to a dynamic wire structure that can adapt its stiffness characteristics during operation. The wire elements can flex and deform dynamically in response to voice coil movements, providing support when needed to prevent polarization while allowing free vibration at large amplitudes. This dynamic behavior enables the component to adjust its mechanical properties based on operational conditions.
Solution Approach 2:
The invention replaces the rigid sheet structure with flexible wire elements that can bend and deform without generating resonance. These flexible wire structures provide the necessary radial support to prevent voice coil polarization while accommodating large amplitude vibrations. The flexibility of the wire structure allows it to follow the voice coil's motion without hindering its free vibration capability.
3Reliability
If the system stabilization component provides sufficient support at large amplitudes, then polarization is prevented, but the component creates pull in the opposite direction hindering voice coil vibration
Solution Approach 1:
The wire structure of the system stabilization component is designed to provide counterbalancing support forces that prevent voice coil polarization without creating excessive opposing pulls. The flexible wire elements can deform to absorb energy and provide balanced radial support, ensuring that the support forces are sufficient to prevent polarization at large amplitudes while minimizing any opposing forces that would hinder voice coil vibration.
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 novel system stabilization component effectively prevents voice coil polarization at large amplitudes, ensuring free vibration and enhancing acoustic performance with improved bass effect and displacement capabilities.
Implementation Method 1
the system stabilization component is of a line-like structure formed by winding a metal wire, and includes a first connection part connected to the voice coil, a deformation part, and a second connection part connected to the housing
Data Source
AI summary
Disclosed is a sound production device including a housing and a vibration assembly, the vibration assembly including a voice coil being of a hollow columnar structure and a vibration diaphragm bonded to an end face of the voice coil; where the sound production device further includes a system stabilization component bonded to an end face of the voice coil or to a side wall of the voice coil; the system stabilization component is of a line-like structure formed by winding a metal wire, and includes a first connection part connected to the voice coil, a deformation part, and a second connection part connected to the housing.