Waterproof Reversible USB Receptacle Insulation Case Signal Isolation
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Solution Overview
Problem
The existing reversible USB receptacles with metal cases interfere with mobile phone antennas, causing signal disruptions due to electrical contact, necessitating a solution that isolates the connector from metal frames.
Innovation Solution
A waterproof reversible USB receptacle with an insulation case featuring a stopper and extension sheets that securely hold the connector in place, preventing interference with mobile phone antennas, and utilizing a waterproof adhesive for sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal case is used in the reversible USB receptacle, then the structural strength and electrical conductivity are improved, but it causes signal interference with the mobile phone antenna
Solution Approach 1:
The patent removes the metal case from the USB receptacle structure and replaces it with an insulation case. This extraction of the metal component eliminates the electrical contact between the receptacle and the mobile phone's metal middle frame (antenna), thereby resolving the signal interference issue while maintaining the necessary structural support through alternative insulating materials
Solution Approach 2:
The patent introduces an insulation case as an intermediary material between the USB connector and the mobile phone's metal frame. This intermediary prevents direct electrical contact and signal interference while still providing the necessary structural support and protection for the connector components
2Reliability
If the connector is retained in the receptacle, then the electrical connection function is maintained, but the retention force must be sufficient to prevent loosening
Solution Approach 1:
The patent employs a dynamic retention mechanism where the extension sheets can be bent during assembly to secure the connector, and the waterproof adhesive provides continuous bonding force. This combination ensures the connector remains firmly retained while allowing for assembly adjustments
Solution Approach 2:
The patent uses a composite retention system combining mechanical retention (bent extension sheets made of insulating material) with chemical retention (waterproof adhesive). This composite approach ensures sufficient retention force to prevent connector loosening while maintaining electrical connection reliability
3Reliability
If the receptacle is made waterproof, then the durability in humid environments is improved, but the sealing complexity increases
Solution Approach 1:
The patent merges multiple functions into the insulation case: it provides structural support, electrical insulation, and waterproof sealing simultaneously. The extension sheets that provide mechanical retention also serve as part of the sealing structure, reducing overall complexity while achieving waterproof reliability
Solution Approach 2:
The waterproof adhesive not only provides sealing functionality but also contributes to the retention of the connector and the integration of components. This self-service approach where one element performs multiple functions reduces the need for additional separate sealing 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 insulation case effectively isolates the connector from metal frames, preventing signal interference while ensuring a secure retention force and maintaining waterproof integrity.
Implementation Method 1
a waterproof adhesive coated on a rear portion of the insulation case
Data Source
AI summary
A waterproof reversible USB receptacle and a method for manufacturing the waterproof reversible USB receptacle, including: an insulation case having a hollow portion; a stopper integrally formed in the hollow portion of the insulation case and including a blocking body, a through hole formed in the blocking body, and extension sheets formed by extending from the blocking body while being bent, the extension sheets being integrally formed in the insulation case; a connector sleeved in the insulation case and including a base portion stopped on the blocking body, and a connection tongue portion extending forward from the base portion and passing through the through hole of the stopper; and a waterproof adhesive coated on a rear portion of the insulation case. The extension sheets further extend to form fixing plates bent to be buckled to a rear end of the base portion after the connector is inserted.