Silicone Earbud Case with Spool and Retention Fingers
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Solution Overview
Problem
Earbuds are prone to damage and their wires tend to tangle when not in use due to lack of protection and management solutions.
Innovation Solution
A protective case made from injection-molded liquid silicone rubber or elastomer with an integral pocket and spool design that prevents tangling by wrapping the wires around a spool and using retention fingers to secure the earbuds, allowing easy insertion and removal without tangling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If earbuds are stored without a protective case, then the case complexity is reduced, but the earbuds are easily damaged and wires get tangled
Solution Approach 1:
The patent combines multiple functions into a single integrated case structure: protection function (hard outer shell), wire management function (spool mechanism), and retention function (retention fingers) are merged into one device, eliminating the need for separate protective cases and wire organizers
Solution Approach 2:
The case employs a nested structure where the spool is positioned within the case body, retention fingers are integrated into the case walls, and the earbuds nest within the formed pocket, creating a compact hierarchical arrangement that maximizes space efficiency
2Reliability
If a protective case is used, then earbuds are protected from damage, but wires still tend to tangle without proper management
Solution Approach 1:
The patent extracts the wire management function from the general protective case concept and implements it through a dedicated spool mechanism, separating wire storage from earbud storage while both functions coexist within the single case structure
Solution Approach 2:
The spool acts as an intermediary device between the wire and the storage space, providing a controlled path for wire winding and preventing direct contact between wire segments that would cause tangling
3Reliability
If retention fingers are added to prevent earbuds from falling out, then earbud security is improved, but the case becomes more complex
Solution Approach 1:
The retention fingers are merged with the case wall structure itself, using the same material and forming process to create integrated retention features rather than adding separate components
Solution Approach 2:
The retention fingers utilize the flexibility of the elastomeric case material to provide gentle retaining force that adapts to the earbud shape, using material properties rather than rigid mechanical structures
4Ease of operation
If the case is made from soft elastomeric material, then ease of carrying and opening is improved, but structural strength may be reduced
Solution Approach 1:
The case utilizes an elastomeric material that combines the flexibility and softness of rubber-like polymers with sufficient structural strength through optimized material composition and density, achieving a balance between comfort and durability
Data Source
AI summary
A small case that can be injection-molded from liquid silicone rubber or a similar elastomer that protects earbuds or other components from damage and manages the wire to prevent tangling. The case has an integral pocket that holds most styles of earbuds or other items with several optional fingers that are flexible and compliant. The earbuds or other component can be inserted into the pocket and the fingers close over the earbuds or other items thereby protecting and/or retaining them. The wires can then be fed through one of the slots and wrapped around a spool. A reversible cover can then be flipped to a closed position to cover and retain the wire.