Inflatable Pouch Headphone Seal for Headgear
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Solution Overview
Problem
Conventional noise-isolating headphones face challenges when worn with headgear, including difficulty in repositioning, inconsistent seal leading to audio leakage, discomfort due to friction, and reduced noise cancellation effectiveness.
Innovation Solution
The integration of an inflatable pouch coupled to the audio output device and ear pad, which inflates to create a secure seal against the headgear, improving fit and reducing friction, thereby enhancing audio insulation and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If headphones press inward against the ears or head to create a seal, then noise isolation is improved, but comfort deteriorates due to friction and pressure when worn with headgear
Solution Approach 1:
The headphone system transitions from a static pressing mechanism to a dynamic inflatable pouch system. The pouch can be inflated to create the seal only when needed (when headgear is worn) and deflated when not needed, allowing the user to adjust the sealing force dynamically. This resolves the contradiction by providing strong sealing when required while maintaining comfort during adjustment or removal of headgear.
Solution Approach 2:
The patent introduces an inflatable pouch that uses pneumatic pressure to create the seal between the headphone and the user's head/ear. Instead of relying on mechanical friction from pressing, the inflated pouch creates a conforming seal through air pressure, reducing friction and improving comfort while maintaining effective noise isolation.
2Reliability
If headphones are designed to create a consistent seal, then audio quality is improved, but adaptability to different headgear and head shapes deteriorates
Solution Approach 1:
The inflatable pouch is designed to conform locally to the specific shape of the user's head and ear, as well as the particular headgear being worn. Rather than requiring a universal rigid shape, the pouch adapts its form to the local geometry it contacts, enabling consistent sealing across different users and headgear types while maintaining audio quality.
Solution Approach 2:
The system allows adjustment of the inflation parameter (air pressure and volume) to adapt to different headgear and head shapes. By changing the physical parameters of the pouch (its size and pressure), the system maintains reliable sealing consistency across various user anatomies and headgear configurations.
3Reliability
If headphones maintain a fixed position, then noise cancellation effectiveness is improved, but ease of adjustment deteriorates when headgear is worn
Solution Approach 1:
The headphone system allows dynamic repositioning by deflating the pouch, which releases the sealing force and enables the user to move the headphones to a new position. Once repositioned, the pouch can be inflated again to restore the seal and noise cancellation effectiveness. This dynamic adjustment capability resolves the contradiction between fixed positioning for noise cancellation and ease of repositioning.
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 provides an improved seal that reduces audio leakage and ambient noise interference, maintains a low profile during headgear use, and adapts to different headgear shapes, enhancing user comfort and noise cancellation.
Implementation Method 1
an inflatable pouch coupled to a second side of the audio output device... inflates to create a secure seal against the headgear
Implementation Method 2
the headphones are configured to pass sound from the audio output device to the ear canal of the user while blocking or reducing ambient noise
Implementation Method 3
the headphones can output active noise cancellation, such as anti-noise that destructively interferes with ambient noise of the environment of the user
Data Source
AI summary
A headphone system includes an audio output device, an ear pad coupled to a first side of the audio output device, and an inflatable pouch coupled to a second side of the audio output device. In some embodiments, the inflatable pouch inflates in at least a direction away from the second side of the audio output device.