Adjustable Earcup Frame for Convertible Headphones
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Solution Overview
Problem
Conventional headphones are limited by fixed earcup sizes, leading to discomfort and inadequate sound attenuation for circumaural headphones, and insufficient sound isolation for supra-aural headphones, making them unsuitable for varying user preferences and environments.
Innovation Solution
A convertible headphone design featuring an adjustable earcup frame with expandable or telescoping components, allowing the earpad to change diameter between circumaural and supra-aural configurations, while maintaining a constant distance from the ear canal to the speaker unit for consistent acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If circumaural headphones are used to provide complete ear coverage and sound attenuation, then sound attenuation is improved, but weight and convenience deteriorate
Solution Approach 1:
The earcup diameter is made adjustable through a telescoping mechanism that allows the earcup to expand for circumaural configuration (when sound attenuation is needed) or contract for supra-aural configuration (when weight and comfort are priorities). This dynamic adjustment resolves the contradiction by allowing the user to switch between heavy circumaural mode for audio sessions and lightweight supra-aural mode for general use.
2Ease of operation
If supra-aural headphones are used to reduce size and weight, then convenience is improved, but sound attenuation deteriorates
Solution Approach 1:
The adjustable earcup diameter allows users to switch between supra-aural configuration (smaller, more convenient) and circumaural configuration (better sound attenuation). The telescoping mechanism enables easy transformation between these states, allowing users to prioritize convenience during casual listening and sound isolation during focused audio sessions.
3Device complexity
If fixed size earcups are used to simplify design, then device complexity is reduced, but adaptability to different user preferences deteriorates
Solution Approach 1:
The telescoping earcup frame provides a mechanical means for users to adjust the earcup diameter to match their preferred fit (circumaural, supra-aural, or intermediate). This dynamic adjustment capability enhances adaptability to different user preferences and ear shapes while maintaining a relatively simple overall design that leverages existing headphone architecture.
4Adaptability or versatility
If adjustable earcup size is implemented to enhance versatility, then adaptability is improved, but device complexity increases
Solution Approach 1:
The telescoping mechanism uses simple expanding and contracting frame members that can be manually adjusted without complex motors or electronics. This mechanical approach to adjustability improves versatility while keeping the added complexity minimal, as the adjustment mechanism integrates seamlessly into the existing earcup structure using straightforward telescoping parts.
Data Source
AI summary
A convertible earcup for a headphone. The earcup includes an earcup frame, a driver positioned within the earcup frame and an earpad coupled to the earcup frame. The earpad is operable to be converted between a first configuration in which the earpad comprises a first diameter and a second configuration in which the earpad comprises a second, different diameter. A convertible headphone system including a set of earcups. Each earcup within the set of earcups includes a speaker unit and an earpad, and the earpad is convertible between a first diameter and a second diameter.