Earphone Bracket Channel Layout for Wind Noise Reduction

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Solution Overview

Problem

True wireless stereo earphones with wind noise conducting tubes have a large size specification, which diminishes the appearance and hinders lightweight design, degrading user experience.

Innovation Solution

An earphone design featuring a bracket with a T-shaped channel that includes a slot section and a hole section, sealed by the housing, allowing airflow to enter and exit through separate holes, reducing wind noise and maintaining a compact size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a wind noise conducting tube is designed with open ends to reduce wind noise, then wind noise reduction is improved, but the housing thickness increases and overall device size increases

Engineering Contradiction:
Improvewind noiseVSAvoiddevice size
Core Design Contradiction:
Object-affected harmful factorsVSVolume of moving object

Solution Approach 1:

The wind noise conducting tube is nested within the handle structure, with the tube positioned inside the handle's internal cavity. This allows the wind noise reduction function to be integrated without increasing the external dimensions of the earphone handle, resolving the contradiction between wind noise protection and compact size.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Object-affected harmful factors

If the housing is thickened to accommodate the wind noise conducting tube structure, then wind noise reduction is improved, but the appearance and refinement are diminished

Engineering Contradiction:
Improvewind noiseVSAvoidappearance
Core Design Contradiction:
Object-affected harmful factorsVSShape

Solution Approach 1:

The conducting tube is nested within the existing handle structure, utilizing the internal space rather than expanding the external form. This maintains the sleek, refined appearance of the earphone while still providing effective wind noise reduction through the tube structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Object-affected harmful factors

If the housing is thickened to provide structural support for the wind noise conducting tube, then wind noise reduction is improved, but the earphone weight increases

Engineering Contradiction:
Improvewind noiseVSAvoidearphone weight
Core Design Contradiction:
Object-affected harmful factorsVSWeight of stationary object

Solution Approach 1:

The wind noise conducting tube is nested within the existing handle structure, utilizing available internal space rather than requiring additional material. This integration approach provides wind noise protection without significantly increasing the overall weight of the earphone.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 design achieves a small size, lightweight, and refined appearance, enhancing user experience by minimizing the impact of wind noise and improving space utilization.

Implementation Method 1

a channel, and the channel including a slot section and a hole section; the slot section includes: an opening blocked by an inner wall of the housing, a first port in connection with the first hole, and a second port in connection with the second hole

Methodology Applied
Scientific EffectFlow separation: Flow Separation

Data Source

PatentEP4322547B1Earphone and earphone assembly
Publication Date: 2026.05.06 BEIJING XIAOMI MOBILE SOFTWARE CO LTD
  • EP4322547B1 patent drawingFigure 1~3
  • EP4322547B1 patent drawingFigure 4~6

AI summary

The present invention provides an earphone and an earphone assembly. The earphone includes a housing, a bracket inside the housing, and a sound unit inside the housing. The housing has a first hole and a second hole. The bracket has a channel. The channel includes a slot section and a hole section. The section includes an opening, a first port and a second port. An inner wall of the housing blocks the opening, the first port is in connection with the first hole, and the second port is in connection with the second hole. The hole section has a first end in connection with the slot section and a second end in connection with the sound unit. The bracket is between the housing and the sound unit.