Adjustable Headphone Speaker Housing for Stable Fit

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Solution Overview

Problem

The shape of individual users' heads and the relative position of their ears vary, leading to inadequate sound output from headphone sets when not properly fitted, as existing headphones lack suitable mounting mechanisms for snug ear placement.

Innovation Solution

A headphone set design featuring speaker housings with adjustable connecting portions that can move linearly forward and rearward, allowing for customizable fitting on the headband, combined with compact elliptical ear pads for improved sealing and sound isolation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional headphone sets with fixed speaker housing positions are used, then the structure is simple, but the fit on individual ears varies and sound output is insufficient

Engineering Contradiction:
Improvesound output effectivenessVSAvoidmounting structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The connecting portion is designed to be movable relative to the speaker housing, allowing linear adjustment in the forward and rearward direction. This dynamic structure enables the speaker housing to be positioned at different locations along the headband, ensuring reliable sound output for individual users with different ear positions while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the speaker housing position is fixed on the headband, then the manufacturing is simple, but the adaptability to different user head shapes is poor

Engineering Contradiction:
Improveadaptability to individual ear positionsVSAvoidmanufacturing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The connecting portion allows linear movement relative to the speaker housing, enabling adjustment of the speaker housing position along the headband. This dynamic design provides adaptability to different user head shapes and ear positions without requiring complex custom manufacturing for each user.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The position of the speaker housing can be changed along the headband by moving the connecting portion. This parameter change (position adjustment) allows the same headphone set to adapt to different users with varying head shapes and ear positions, maintaining ease of manufacture while improving versatility.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If the headphone set uses fixed angle speaker housing, then the structure is simple, but the sound cannot reach the ear sufficiently for users with different crown shapes

Engineering Contradiction:
Improvesound delivery to earVSAvoidadjustment mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The connecting portion is designed as a movable component that allows linear adjustment in the forward and rearward direction relative to the speaker housing. This dynamic positioning capability ensures that sound from the speaker unit can reach the user's ear effectively, regardless of variations in crown shape or ear position, while avoiding complex angular adjustment mechanisms.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS9258636B2Headphone set
Publication Date: 2016.02.09 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • US9258636B2 patent drawing
  • US9258636B2 patent drawing
  • US9258636B2 patent drawing

AI summary

In a conventional headphone set, there is a possibility that a headband cannot be put in a suitable position when an ear pad is snugly mounted on an ear. A headphone set of this disclosure includes speaker units which output a sound. The headphone set also includes: speaker housings which are brought into contact with a user; connecting portions which are connected to the speaker housings in a state where the speaker housings are movable in a forward and rearward direction of the user; and a headband which has connecting portions on end portions thereof and is mounted on a head of the user in directions toward a crown of the head of the user. Due to such a constitution, the headphone set can be used in a more stable manner.