Bone-Conduction Wearable Temple With Adjustable Vibration Contact

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Solution Overview

Problem

Conventional bone conduction devices for wearable electronic devices, such as AR glasses, suffer from sound leakage and inadequate sound volume due to improper fitting and lack of adjustable mechanisms, particularly when using piezoelectric elements.

Innovation Solution

The device incorporates a first and second vibration element connected in reverse phase, with a rotatable connection part that adjusts the angle of the temple and temple tip, allowing the vibration source to move from a first to a second position closer to the ear, and is held by elastic members to prevent sound leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a piezoelectric element is used as a bone conduction device in a temple, then weight is reduced and wearability is improved, but sound leakage occurs

Engineering Contradiction:

ImproveweightVSAvoidsound leakage

Core Design Contradiction:

Weight of moving objectVSObject-generated harmful factors

Solution Approach 1:

The temple is divided into multiple sections: a first temple section that contacts the head, a second temple section that holds the piezoelectric element, and a connection part that rotatably connects them. This segmentation allows the vibration source to be isolated from the contact surface, preventing sound leakage while maintaining light weight and wearability.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If the bone conduction device is fixed in a non-adjustable position, then device complexity is reduced, but fitting to different users is poor and sound listening level decreases

Engineering Contradiction:

Improvedevice complexityVSAvoidsound listening level

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The connection part between the first and second temple sections is designed to rotate, allowing the second temple section holding the piezoelectric element to adjust its position relative to the first temple section. This dynamic adjustment mechanism enables proper fitting to different users' head shapes while maintaining simple device structure.

Inventive Principle:

Principle #15Dynamics

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

This configuration enhances sound volume and reduces sound leakage by ensuring proper fitting and effective contact with the user's head, while allowing easy wearing and removal of the device.

Implementation Method 1

there are an MM system and an MC system dynamic type excitors and a piezoelectric element

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 2

held by elastic members to prevent sound leakage

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS20250330735A1Electronic device

Publication Date: 2025.10.23 ONKYO KK

AI summary

An electronic device comprising: a first vibration element having a contact surface; and a second vibration element, wherein the first vibration element and the second vibration element are connected in a reverse phase.