Portable Device Interceptor for Waterproofing via Integral Molding
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Solution Overview
Problem
Existing portable electronic devices face challenges in preventing foreign substances like dust and water from entering due to the deterioration of soft rubber seals and the difficulty in designing precise dimensions for hard rubber members, which compromise waterproofness and assembling characteristics.
Innovation Solution
An interceptor is integrally formed with at least one case of the portable electronic device using double injection molding, featuring protrusions that seal the coupling surfaces to prevent foreign substances from entering, enhancing assembling characteristics and waterproofness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a soft rubber member is inserted into the U-shaped groove to prevent water penetration, then waterproofness is improved, but the rubber member deteriorates over time and creates assembling difficulties
Solution Approach 1:
The intercepting part is integrally formed with at least one of the first case or the second case, merging the sealing function with the case structure. This eliminates the need for separate rubber members and their associated assembly issues while maintaining waterproofness through the integral formation process.
Solution Approach 2:
The intercepting part is formed through double injection molding, creating a composite structure that combines different materials or properties within a single integrated component. This allows the intercepting part to achieve both sealing effectiveness and improved assembling characteristics.
2Ease of manufacture
If a hard rubber member is employed to improve assembling characteristics, then assembling characteristics are improved, but the sealing force is reduced and waterproofness is compromised
Solution Approach 1:
The intercepting part is integrally formed with the case structure, eliminating the need for separate hard or soft rubber members. The integral formation process creates a seamless connection that provides both good assembling characteristics and maintains waterproofness through precise dimensional control.
Solution Approach 2:
The double injection molding process allows for precise control of dimensional parameters and material properties of the intercepting part. By optimizing these parameters during manufacturing, the intercepting part achieves both improved assembling characteristics and sufficient sealing force to maintain waterproofness.
3Reliability
If the rubber member is formed to closely fit the groove, then waterproofness is improved, but it becomes difficult to design fine dimensions and patterns
Solution Approach 1:
The intercepting part is integrally formed with the case, merging the sealing structure with the case geometry. This integration simplifies the design process by eliminating the need for separate rubber member designs while maintaining the close fit required for waterproofness through the molding process.
Solution Approach 2:
The double injection molding process enables precise control of dimensional parameters, allowing for fine dimensions and complex patterns to be directly formed in the intercepting part. This reduces design complexity compared to traditional rubber member approaches while maintaining the close fit needed for effective sealing.
Data Source
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AI summary
Disclosed is a portable electronic device having an interceptor for cutting off foreign substances such as water, dust or the like from being entered between the coupling surfaces thereof. The portable electronic device includes: a first case; a second case to be joined with the first case; and an intercepting part integrally formed with at least one of the first case or the second case, wherein the intercepting part is sealingly engaged with the coupling surface of the first case or the second case to prevent foreign substances and waterproof the device thereof.