Speaker Diaphragm Deformation Structures for Resonance Vibration Control

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Solution Overview

Problem

Existing speaker diaphragms suffer from sound distortion due to formants created by non-uniform vibration patterns at resonance frequencies, which are influenced by material properties like Young's modulus and density, leading to irregular frequency response.

Innovation Solution

A speaker diaphragm with protruding deformation structures, such as corrugated or wrinkled features, is designed to suppress large area vibrations into local vibrations, reducing wave amplitude and vibration time at resonance frequencies, using glass diaphragms with a Young's modulus of 70-1300 GPa and a 40% average distribution area of these structures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If high rigidity material is used to widen frequency band, then frequency response is improved, but resonance vibration magnitude increases causing sound distortion

Engineering Contradiction:

ImproverigidityVSAvoidresonance vibration magnitude

Core Design Contradiction:

StrengthVSObject-generated harmful factors

Solution Approach 1:

The patent changes the physical parameters of the diaphragm by introducing protruding deformation structures with specific geometric parameters (protruding height h, diameter d, spacing s) that satisfy particular relationships. These parameter changes modify the vibration characteristics and resonance behavior of the diaphragm, reducing vibration magnitude at resonance frequencies while maintaining the high rigidity of glass material for wide frequency response.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent applies local quality by creating protruding deformation structures at specific locations on the diaphragm surface. These localized structures have different mechanical properties compared to the surrounding areas, creating zones that specifically target and reduce resonance vibrations in certain regions while preserving the overall structural integrity and rigidity of the diaphragm.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If uniform structure diaphragm is used to simplify manufacturing, then manufacturing ease is improved, but formant creation occurs causing sound distortion

Engineering Contradiction:

Improvestructural uniformityVSAvoidformant

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The patent introduces localized protruding deformation structures on the diaphragm surface that create non-uniform local regions. These local variations in structure prevent the formation of formants by disrupting the uniform vibration patterns that would otherwise occur across the entire diaphragm surface, thereby eliminating sound distortion while maintaining overall manufacturing feasibility.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The diaphragm surface is segmented into multiple regions by the protruding deformation structures. This segmentation divides the continuous uniform surface into distinct zones with different mechanical characteristics, preventing the synchronized vibration that causes formants and improving sound quality.

Inventive Principle:

Principle #1Segmentation

3Strength

If glass diaphragm with high Young's modulus is used to reduce density and increase strength, then mechanical strength is improved, but vibration non-uniformity increases creating formant

Engineering Contradiction:

Improvemechanical strengthVSAvoidvibration uniformity

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The patent compensates for the vibration non-uniformity inherent in high Young's modulus glass materials by introducing protruding deformation structures at specific locations. These local structures create zones that adjust and equalize the vibration distribution across the diaphragm surface, preventing formant creation while preserving the high mechanical strength and low density benefits of glass material.

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 deformation structures effectively reduce sound distortion by enhancing frequency response uniformity and maintaining high mechanical strength, allowing for improved sound quality and broader frequency range.

Implementation Method 1

reduce the amplitude of the wave at the resonance frequency

Methodology Applied

Scientific EffectResonance: Resonance

Implementation Method 2

suppress large area vibration into local vibration

Methodology Applied

Scientific EffectVibration: Vibration

Implementation Method 3

The diaphragm is vibrated by the driving force generated from the interaction between the coils and the magnets

Methodology Applied

Scientific EffectElectromagnetic interaction: Lorentz Force

Data Source

PatentUS12507012B2Diaphragm with deformation structures to reduce vibration magnitude at resonance frequency

Publication Date: 2025.12.23 GLASS ACOUSTIC INNOVATIONS CO LTD

AI summary

A speaker diaphragm structure is provided to reduce vibration magnitude at resonance frequency, which includes a hard material diaphragm, a plurality of small area three-dimensional deformation structures formed on the flat area of the hard material diaphragm. The small area three-dimensional deformation structures are used to suppress the vibration of a large area in the diaphragm into a local vibration of a small area, so as to reduce effects of the magnitude and lasting time of the resonance.