Variable Thickness Cushions for Headphone Noise and Comfort
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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 thick earpiece pads, central headband connections, and metal component interactions.
Innovation Solution
The design incorporates pivot mechanisms for earpieces that allow rotation at an upper portion, variable thickness cushions for better fit and noise reduction, and the use of dampening materials to minimize noise from component interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If thick earpiece pads are used to improve noise reduction, then external noise reaching the user increases, but the headphones become bulkier and less comfortable
Solution Approach 1:
The earpiece pads are designed with variable thickness, being thicker at the periphery for noise sealing and thinner at the center for comfort. This local differentiation allows the pads to provide effective noise isolation without requiring uniform thickness throughout, thus avoiding bulkiness while maintaining noise reduction performance.
2Strength
If metal components are used in input controls for durability, then the components are prone to generating noise when they come in contact, but using other materials may reduce durability
Solution Approach 1:
A dampening material is introduced as an intermediary between metal components in the input controls. This dampening material acts as a mediator that prevents direct metal-to-metal contact, thereby eliminating the noise generated by component interaction while allowing the metal components to maintain their structural durability and functionality.
3Ease of manufacture
If the headband is designed as a single piece for simplicity, then manufacturing is easier, but it cannot be optimized for clamp force and comfort
Solution Approach 1:
The headband is segmented into multiple separate components rather than being a single piece. This segmentation allows each component to be independently optimized for specific functions such as clamp force distribution, comfort, and adjustability, while still being manufacturable through standard processes. The modular approach enables better performance optimization without significantly complicating manufacturing.
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 user comfort, reduces external noise, and minimizes noise disruption from user input controls, resulting in a more comfortable and quieter listening 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.