Variable Thickness Earpiece Cushion with Cantilevered Support
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Solution Overview
Problem
Conventional headphones are often bulky, uncomfortable, and prone to noise generation due to inadequate design features such as earpiece pad thickness, pivot mechanism location, and component interaction, which affects user experience and acoustic sealing.
Innovation Solution
The design incorporates a pivot mechanism that allows earpieces to rotate at an upper portion, variable thickness cushions with cantilevered support members for improved fit and sealing, and dampening materials to reduce noise from component interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional headphones use uniform thickness cushions, then manufacturing is simple, but comfort and acoustic sealing are insufficient
Solution Approach 1:
The cushion is designed with variable thickness where different regions have different thicknesses to match the contours of the user's head. This local quality variation improves comfort and acoustic sealing without requiring the entire cushion to be thick, thus resolving the contradiction between comfort and complexity.
Solution Approach 2:
The cushion incorporates flexible materials and structural features that allow it to dynamically adapt to different head shapes and sizes. This dynamic adaptability enables a single cushion design to provide good comfort and sealing for multiple users without requiring complex customization.
2Ease of operation
If pivot mechanism is located at the center of earpieces, then structural design is simple, but weight distribution and comfort are poor
Solution Approach 1:
The pivot mechanism is relocated from the center of the earpiece to an asymmetric position closer to the top. This asymmetric placement improves weight distribution and comfort by positioning the pivot point above the user's ear, allowing the earpiece to rest more naturally on the head without requiring complex balancing mechanisms.
3Object-generated harmful factors
If metal components contact directly in inputs, then manufacturing is simple, but noise generation occurs
Solution Approach 1:
A dampening material is introduced as an intermediary between metal components in the input mechanism. This intermediary layer prevents direct metal-to-metal contact that causes noise while maintaining the mechanical functionality of the input, resolving the contradiction between noise reduction and structural simplicity.
4Object-affected harmful factors
If earpieces are positioned away from head, then acoustic sealing is improved, but user awareness of inputs is reduced
Solution Approach 1:
The earpiece is designed to dynamically position itself relative to the user's head based on the detected position. When the ear is detected, the earpiece moves to a position that provides both good acoustic sealing and maintains user awareness of input controls, resolving the contradiction between noise isolation and operational awareness.
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 comfort, reduces external noise, and minimizes noise generation during user input operations, providing a more effective acoustic seal and improved user experience.
Implementation Method 1
a first compression spring at least partially surrounding the first piston and the first cylinder and positioned to compress relative to the aperture while opposing rotation of the pivot mechanism about the first axis
Implementation Method 2
Dampening material can also be positioned in the inputs to reduce noise that can be generated when to components come in contact with one another
Data Source
AI summary
This disclosure includes several different features suitable for use in circumaural and supra-aural headphones designs. Designs that enhance user comfort and improve user control of the headphones are discussed. Various sensor configurations and electronic component positions are also discussed. User convenience features that include detachable cushions and automatically detecting the donning and doffing of headphones are also discussed.