Damped Ball Joint Headband Interface for Ear-Cup Rotation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Commercially available headphones often cause ear soreness due to uneven force distribution, struggle with universal fitment due to unique ear shapes, and suffer from rattling noises, especially at high volumes or with rich bass, which interferes with the listening experience.
Innovation Solution
The audio listening device features pivotably engaged ear-cups with a damper rim, allowing semi-free, damped rotation relative to the headband assembly, incorporating engagement structures like ball-and-socket joints and friction-based adjust mechanisms for customizable fit and reduced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ear-cup is positioned close to the auditory canal to create an acoustically necessary coupling space, then the acoustic performance is improved, but the force holding the headphone in place may be concentrated on one part of the user's ear, causing the ear to become sore
Solution Approach 1:
The patent implements a pivotable engagement structure that allows the ear-cup assembly to rotate and adjust dynamically. This dynamic adjustment capability enables the ear-cup to maintain optimal acoustic positioning while distributing the holding force across different areas of the ear, preventing concentrated pressure points that cause soreness.
Solution Approach 2:
The engagement structure includes curved surfaces with specific radii of curvature that change the geometric parameters of the connection between ear-cup and headband. This geometric design modifies the force distribution pattern, allowing the ear-cup to be held securely while reducing peak pressures on the ear.
2Adaptability or versatility
If the ear-cup is designed to fit universally, then the adaptability to different users is improved, but the uniqueness of each user's ear shape creates a problem for designing ear-cups that provide a comfortable and close fit
Solution Approach 1:
The pivotable engagement structure allows each user to dynamically adjust the ear-cup position to match their unique ear shape. This adjustability provides universal adaptability while maintaining a comfortable and close fit for individual users, resolving the contradiction between universal design and personalized comfort.
3Adaptability or versatility
If the ear-cup components are allowed to move freely for adjustment, then the adaptability is improved, but internal components such as the diaphragm and wires may become dislodged, causing rattling noise
Solution Approach 1:
The patent incorporates a damper rim that provides pre-positioned damping and cushioning for the pivotable engagement structure. This damping mechanism allows necessary movement for adjustment and adaptability while preventing excessive movement that would cause internal components to dislodge and create rattling noise.
Solution Approach 2:
The damper rim acts as an intermediary element between the pivotable engagement structure and the internal components. It mediates the movement, allowing controlled adjustment while restraining components that would otherwise move freely and create noise, thus resolving the contradiction between adaptability and noise prevention.
4Stability of the object's composition
If the headband applies sufficient force to hold the headphones in place, then the stability is improved, but the force may be concentrated on one part of the user's ear, causing discomfort
Solution Approach 1:
The pivotable engagement structure transforms the static force application into a dynamic system. The ear-cup assembly can rotate and adjust to distribute the stabilizing force across different areas of the ear, maintaining headphone stability while preventing concentrated pressure points that cause discomfort.
Solution Approach 2:
The curved surfaces in the engagement structure, with specific radii of curvature, modify the force distribution pattern. This geometric design allows the headband to apply sufficient stabilizing force while spreading the pressure over a larger area of the ear, reducing peak pressures and preventing discomfort.
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
This design provides a comfortable, adjustable fit that minimizes ear fatigue and eliminates rattling noises, enhancing the listening experience while maintaining aesthetic appeal and portability.
Implementation Method 1
a damper rim that is coupled to the ear-cup assembly and to the at least one end of the headband assembly, wherein the engagement structures and the damper rim provide semi-free, damped rotation of the ear-cups relative to the headband assembly
Implementation Method 2
The engagement structure comprises at least two cooperatively-coupled curved surfaces... the damper rim is configured to at least partially constrict movement of the ear-cup assembly relative to the headband assembly
Data Source
AI summary
An audio listening device having a damped ball joint type interface between an ear-cup assembly and a headband assembly is provided. For example, the audio listening device can include a headband assembly comprising at least one end; an ear-cup assembly pivotably engaged to the at least one end of the headband assembly by an engagement structure, the engagement structure comprising at least two cooperatively coupled curved surfaces; and a damper rim coupled to the ear-cup assembly and to the at least one end of the headband assembly, wherein the damper rim is configured to at least partially constrict movement of the ear-cup assembly relative to the headband assembly.