Waterproof Button Partition Using Elastic Film and Foam
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Solution Overview
Problem
Existing waterproof button structures for electronic devices, particularly those using O-rings, are complex and costly, and tend to become loose over time, compromising both functionality and manufacturing efficiency.
Innovation Solution
A waterproof button structure incorporating a waterproof film and foam partition with an elastic plastic film and deformable foam, which provides improved tactile feedback and maintains elasticity, simplifying assembly and reducing costs by eliminating the need for complex assembly designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If O-rings are used for waterproofing, then waterproof function is achieved, but structure becomes complicated and cost increases
Solution Approach 1:
The patent replaces traditional O-ring waterproof structures with a thin film waterproof layer integrated into the button assembly. This film layer provides effective waterproofing while significantly simplifying the overall structure, eliminating the need for separate O-rings and complex assembly designs.
Solution Approach 2:
The waterproof function is merged directly into the button structure by integrating the waterproof film layer with the button and housing components. This consolidation eliminates separate waterproofing elements and reduces structural complexity while maintaining effective waterproof protection.
2Reliability
If O-rings are used for waterproofing, then waterproof function is achieved, but manufacturing cost increases
Solution Approach 1:
The thin film waterproof layer is more cost-effective to manufacture than traditional O-rings. The film can be produced through simpler processes and integrated directly into the button assembly, reducing material costs and manufacturing complexity.
Solution Approach 2:
The patent employs a cost-effective waterproof film that can be easily manufactured and replaced if necessary. This film provides adequate waterproof protection at a lower cost compared to precision-machined O-rings, aligning with cost-reduction goals.
3Reliability
If O-rings are used for waterproofing, then waterproof function is achieved, but the O-ring becomes loose over time
Solution Approach 1:
The thin film waterproof layer maintains its waterproof integrity over time without becoming loose. The film is firmly integrated into the button and housing structures, preventing the loosening issue that plagues traditional O-rings while maintaining flexible waterproof protection.
Solution Approach 2:
By merging the waterproof function directly into the button assembly structure, the waterproof film becomes an integral part of the assembly rather than a separate component. This integration ensures long-term stability and prevents loosening that occurs with separate O-ring components.
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 enhances the tactile experience of button presses while ensuring effective water resistance and reducing manufacturing and maintenance costs through a simpler, more efficient design.
Implementation Method 1
A waterproof button structure incorporating a waterproof film and foam partition with an elastic plastic film and deformable foam, which provides improved tactile feedback and maintains elasticity
Implementation Method 2
The solution enhances the tactile experience of button presses while ensuring effective water resistance
Data Source
AI summary
A waterproof partition adapted to a button includes a waterproof film and a waterproof foam formed on a surface of the waterproof film and covering a periphery of the waterproof film. The waterproof foam is formed with an opening for providing a moving passage for pressing the button. The waterproof film has elasticity, and the waterproof film is annular.