Segmented Eartip Hardness for Comfort and Structural Integrity
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Solution Overview
Problem
Conventional eartips face challenges in balancing softness for comfort and hardness for structural integrity, leading to discomfort and insecurity, especially for users with curved or narrow ear canals.
Innovation Solution
An eartip design featuring a central tube with a cone wrapping around, comprising a first portion with a higher hardness and a second portion with a lower hardness, connected by a transition zone with gradually changing thickness and hardness, allowing for secure fit and enhanced comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a harder material is used to maintain structural integrity, then the eartip can maintain its structure and provide security, but it causes discomfort to users with curved or narrow ear canals
Solution Approach 1:
The eartip employs different hardness levels in different regions: the upper portion (first portion) uses a harder material to maintain structural integrity and provide security, while the lower portion (second portion) uses a softer material to enhance comfort against the ear canal wall. This local differentiation resolves the contradiction by assigning appropriate properties to specific locations.
Solution Approach 2:
The eartip is divided into distinct segments: a first portion with higher hardness and a second portion with lower hardness, connected by a transition zone. This segmentation allows each portion to fulfill its specific function - the harder first portion provides structural support and security, while the softer second portion ensures comfort.
2Ease of operation
If a softer material is used to improve wearing comfort, then user comfort is enhanced, but the eartip structure may collapse and the user may feel insecure
Solution Approach 1:
The softer second portion is strategically positioned only where comfort is needed (against the ear canal wall), while the harder first portion maintains structural integrity in the upper region. This local quality differentiation allows the eartip to be soft where required without compromising overall strength.
Solution Approach 2:
By segmenting the eartip into a harder first portion and a softer second portion, the design ensures that structural integrity is maintained in the upper region while comfort is provided in the lower region, preventing both collapse and insecurity.
3Ease of operation
If the entire eartip is made uniformly soft to ensure comfort, then wearing comfort is improved, but the eartip cannot maintain its structure and may fall out easily
Solution Approach 1:
The eartip uses a harder first portion in the upper region to maintain structure and provide security of fit, while using a softer second portion in the lower region for comfort. This local quality differentiation resolves the contradiction between comfort and security.
Solution Approach 2:
The eartip is segmented into a harder first portion that provides structural support and security, and a softer second portion that provides comfort. This segmentation ensures both comfort and reliable fit without requiring uniform softness throughout.
4Strength
If the entire eartip is made uniformly hard to maintain structure, then structural integrity is improved, but wearing comfort deteriorates especially for curved or narrow ear canals
Solution Approach 1:
The eartip employs a harder first portion for structural integrity in the upper region and a softer second portion for comfort in the lower region. This local quality differentiation allows the eartip to be hard where structure is needed and soft where comfort is needed.
Solution Approach 2:
By segmenting the eartip into a harder first portion and a softer second portion, the design maintains structural integrity in the upper region while providing comfort in the lower region, avoiding the need for uniform hardness.
Data Source
AI summary
An eartip comprises a central tube part and a cone, the central tube part is in the shape of a column, the cone wraps around the central tube part, the cone comprises a first portion and a second portion, the first portion has a first hardness, the second portion has a second hardness less than the first hardness, a first upper end of the first portion is connected to a top end of the central tube part, and a bottom end of the first portion overlaps with a second upper end of the second portion to form a transition. The invention aims to solve the problems in the prior art that a hardness of eartip materials is too hard to cause discomfort to users, and too soft that may cause the structure to collapse.