Profiled Ear Piece Casting Form with Textured Contact Section
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Solution Overview
Problem
Existing earpieces face challenges in providing both comfort and secure fit, especially when used for extended periods, and there is a need for an efficient and cost-effective method to generate such devices.
Innovation Solution
A casting form with a contact section and a non-contact section, featuring textured elements, is used to create earpieces that can be easily produced using 3D printing, allowing for customizable designs and materials like silicone and polyurethane, which enhance comfort and grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a smooth ear piece is used, then it is easy to manufacture and comfortable to wear, but it does not provide secure grip in the ear
Solution Approach 1:
The ear piece applies different surface qualities to different regions: the contact section has a textured surface with protrusions for secure grip, while the non-contact section maintains a smooth surface for comfort and ease of manufacture. This local differentiation resolves the contradiction by providing texture only where needed for gripping, without compromising overall manufacturability or comfort.
2Duration of action of moving object
If the ear piece is used for long periods, then it provides continuous protection, but it becomes uncomfortable to wear
Solution Approach 1:
The textured protrusions are localized to the contact section that interfaces with the ear canal, providing secure grip only where needed for retention during extended wear, while the non-contact section remains smooth and comfortable. This localized texturing allows long-duration wear without compromising comfort.
3Reliability
If a complex casting form with texturing elements is used, then the ear piece provides secure grip and customization, but the manufacturing process becomes more complex
Solution Approach 1:
The casting form is segmented into modular components: a supporting form and interchangeable casting forms with different profiled sections. Each casting form can be independently manufactured and replaced, simplifying the overall manufacturing process while enabling customization of the textured protrusions for secure grip.
Solution Approach 2:
The casting form uses a mold-based copying process where the profiled section with texturing elements is replicated in the casting material. This allows the complex texture pattern to be created through a simple copying mechanism rather than direct manufacturing, reducing the complexity of the forming process.
4Ease of operation
If customized ear pieces are manufactured for each user, then fit and comfort are optimized, but production costs and time increase
Solution Approach 1:
The ear piece is divided into a standardized supporting form and interchangeable casting forms with different profiled sections. Users can be fitted by simply replacing the casting form, which maintains customization for optimal fit and comfort while significantly improving production efficiency through modular assembly.
Solution Approach 2:
The supporting form serves as a universal base that can accommodate multiple different casting forms with various profiled sections. This multi-functionality allows a single supporting form to produce multiple customized ear piece variants, reducing production costs and time while maintaining individualized fit and comfort.
Data Source
AI summary
The invention is related to a casting form (1) for the generation of an ear piece (100or a part of an ear piece (100), wherein the ear piece (100) comprises a contact section (120) and a non-contact section (110). The casting form (1) comprises an inner surface (10) delimiting an inner volume (12) for receiving a casting material, wherein the inner volume (12) is at least a part of the contact section (120). The inner surface (10) comprises at least one profiled section (20) comprising at least one texturing element (30). The invention is further related to a method for generating a casting form (1). The invention further comprises an ear piece (100).