Sound Production Device Line-Like Stabilization Component

Solution Overview

Problem

Existing sound production devices face polarization issues with voice coils during large amplitude vibrations, as traditional system stabilization components fail to provide sufficient displacement and resistance, leading to THD local spikes and impaired vibration.

Innovation Solution

A novel sound production device with a line-like system stabilization component formed by winding a metal wire, featuring a first connection part bonded to the voice coil, a deformation part with U-bend structures, and a second connection part fixed to the housing, which prevents polarization without hindering voice coil vibration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional integrated sheet structure system stabilization component is used, then the voice coil polarization is prevented, but the THD local spike occurs and the linear region is small due to resonance at large amplitude

Engineering Contradiction:

Improvevoice coil polarization preventionVSAvoidTHD local spike

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The system stabilization component is divided into multiple independent elastic arms instead of using a single integrated sheet structure. Each elastic arm independently connects the voice coil to the housing, segmenting the stabilization function to reduce resonance interaction and improve linear response at large amplitudes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elastic arms are designed with appropriate flexibility and damping characteristics to dynamically adapt to the voice coil's vibration. The elastic arms provide continuous stabilization force while allowing controlled deformation, preventing polarization without causing resonance at large amplitudes.

Inventive Principle:

Principle #15Dynamics

2Reliability

If a traditional integrated sheet structure system stabilization component is used, then the voice coil polarization is prevented, but the linear region is small and the component cannot provide sufficient displacement

Engineering Contradiction:

Improvevoice coil polarization preventionVSAvoiddisplacement capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system stabilization component is divided into multiple independent elastic arms instead of using a single integrated sheet structure. Each elastic arm independently connects the voice coil to the housing, segmenting the stabilization function to reduce resonance interaction and improve linear response at large amplitudes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elastic arms are designed with specific material properties and geometric parameters to optimize their displacement capability. By adjusting the elasticity, cross-sectional area, and length of the elastic arms, the system achieves sufficient displacement range while maintaining polarization prevention.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If a traditional integrated sheet structure system stabilization component is used, then the voice coil polarization is prevented, but the component pulls in the opposite direction to voice coil displacement at large amplitude

Engineering Contradiction:

Improvevoice coil polarization preventionVSAvoidopposite direction pull

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

The system stabilization component is divided into multiple independent elastic arms instead of using a single integrated sheet structure. Each elastic arm independently connects the voice coil to the housing, segmenting the stabilization function to reduce resonance interaction and improve linear response at large amplitudes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each elastic arm is designed with localized stiffness and damping characteristics optimized for its specific position and function. The elastic arms provide appropriate resistance to polarization forces while allowing sufficient displacement in the voice coil's primary vibration direction, avoiding excessive opposite-direction pulls.

Inventive Principle:

Principle #3Local quality

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 displacements, ensuring free vibration and enhancing acoustic performance by providing adequate resistance in the horizontal direction while allowing deformation in the vertical direction.

Implementation Method 1

the deformation part is formed by connecting a plurality of U-bend structures, with adjacent U-bends bending in opposite directions

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS11722824B2Sound production device and assembling method therefor

Publication Date: 2023.08.08 GOERTEK INC

AI summary

Disclosed is a sound production device including a housing and a vibration assembly, the vibration assembly comprising a vibration diaphragm and a voice coil combined to one side of the vibration diaphragm; wherein the sound production device further comprises a system stabilization component connected with the voice coil; the system stabilization component is of a line-like structure formed by winding a metal wire, and comprises a first connection part connected to the voice coil, a deformation part, and a second connection part connected to the housing. By adopting the sound production device of this structure, the voice coil will not be polarized under the condition of large displacement, and the system stabilization component having a novel structure does not hinder the free vibration of the voice coil either.