Mesh Protection Component for Bone Conduction Acoustic Devices

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Solution Overview

Problem

Traditional ear canal sound transmission methods in hearing aids provide limited improvement for hearing-impaired individuals, necessitating a better structural component and layout to enhance auditory effects.

Innovation Solution

The acoustic device employs bone conduction technology with a mesh-structured protection component that allows the vibration transmission plate to extend outside the accommodation cavity, facilitating direct bone transmission of mechanical vibrations while allowing air pressure equalization, thereby reducing sound leakage and improving sound quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the vibration component extends out of the accommodation cavity through the opening, then bone conduction efficiency is improved, but foreign body intrusion risk increases

Engineering Contradiction:

Improvebone conduction efficiencyVSAvoidforeign body intrusion

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a protection component as an intermediary element positioned between the external environment and the accommodation cavity. This mesh-structured component allows vibration transmission while blocking foreign bodies, resolving the contradiction between exposure for bone conduction and protection against intrusion.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The protection component utilizes a mesh structure with specific aperture sizes that permit passage of vibrational energy while preventing foreign body entry. The porous/mesh nature of the material enables selective transmission based on physical properties of what passes through.

Inventive Principle:

Principle #31Porous materials

2Object-affected harmful factors

If the accommodation cavity is sealed to protect internal components, then protection against foreign bodies is improved, but air pressure equalization and sound quality deteriorate

Engineering Contradiction:

Improveforeign body protectionVSAvoidsound quality

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The mesh-structured protection component provides both sealing and permeability functions simultaneously. It seals the accommodation cavity against foreign bodies while its porous structure allows air molecules to pass through for pressure equalization and sound transmission.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The protection component has different functional zones: the mesh structure provides selective permeability for air and sound while blocking larger foreign particles. This local differentiation of material properties enables simultaneous achievement of protection and acoustic performance.

Inventive Principle:

Principle #3Local quality

3Object-affected harmful factors

If a solid protection component is used to block foreign bodies, then foreign body protection is improved, but vibration transmission and sound leakage reduce

Engineering Contradiction:

Improveforeign body protectionVSAvoidvibration transmission loss

Core Design Contradiction:

Object-affected harmful factorsVSLoss of energy

Solution Approach 1:

The mesh structure creates a protection component that is not solid but rather a network of open spaces. This allows vibrational energy to pass through the gaps in the mesh while the overall structure still provides effective blocking of foreign bodies.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The protection component combines the functions of a solid barrier (foreign body blocking) with the properties of an open structure (vibration transmission) through its mesh architecture, creating a composite functional material.

Inventive Principle:

Principle #40Composite materials

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 solution enhances sound transmission efficiency and reduces sound leakage, resulting in clearer and more stable sound reception for hearing-impaired users by utilizing bone conduction and mesh-structured protection components.

Implementation Method 1

allowing air pressure equalization

Methodology Applied

Scientific EffectAir pressure equalization: Pressure Gradient

Implementation Method 2

at least a portion of each of the one or more protection components is physically connected with the vibration component to transmit a vibration of the vibration component to the outside

Methodology Applied

Scientific EffectMechanical vibration transmission: Vibration

Implementation Method 3

Methodology Applied

Scientific EffectBone conduction: Conduction (thermal)

Data Source

PatentEP4124070B1Acoustic device and production method for protective component thereof

Publication Date: 2026.01.28 SHENZHEN SHOKZ CO LTD

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AI summary

The present disclosure discloses an acoustic device, including: one or more shells each of which includes an accommodation cavity and an opening; one or more speakers each of which includes a vibration component placed in the accommodation cavity; one or more protection components configured to prevent a foreign body from entering the accommodation cavity through the opening, and at least a portion of one of the one or more protection components may be physically connected with the vibration component to transmit a vibration of the vibration component to the outside.