Electrical Connector Sub Shell Positioning for Terminal Protection
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Solution Overview
Problem
Existing electrical connectors face issues with the sub shell being positioned too close to power terminals, leading to potential shorting and damage due to external factors like dust or humidity, and inadequate shielding.
Innovation Solution
The design includes a sub shell with a vertically extending covering part that abuts the tongue and base portions, creating a gap between power terminals and the shielding shell, preventing shorting and enhancing binding force while maintaining effective shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the sub shell is positioned close to the power terminals for compact design, then the device complexity is reduced, but the reliability deteriorates due to potential shorting and damage from dust or humidity
Solution Approach 1:
The patent introduces a sub shell as an intermediary protective element positioned between the power terminals and the external environment. This sub shell acts as a mediator that provides shielding and protection against dust and humidity while maintaining the compact design. The sub shell is specifically configured to cover the power terminals without requiring excessive space, thus resolving the contradiction between compactness and protection.
2Force
If the sub shell is positioned close to the power terminals, then the binding force is enhanced, but the harmful factors increase due to exposure to dust or humidity
Solution Approach 1:
The patent employs a sub shell configured as a protective covering that can conform to the terminal structure. This shell-like structure provides environmental protection while maintaining close positioning to enhance binding force. The sub shell acts as a barrier film that shields the terminals from dust and humidity exposure while staying integrated with the connector assembly.
3Reliability
If the sub shell is repositioned to expose the tongue portion, then the reliability is improved by preventing shorting, but the device complexity increases
Solution Approach 1:
The patent applies local quality by configuring the sub shell to selectively cover different portions of the connector. Specifically, the sub shell is designed to cover the power terminals for protection while leaving the tongue portion exposed for proper mating functionality. This localized differentiation in coverage resolves the contradiction between protection and functionality by applying different protective qualities to different areas.
Data Source
AI summary
An electrical connector includes: an insulative housing comprising a base portion and a tongue portion extending forwardly from the base portion; two rows of conductive terminals comprising a plurality of first terminals and second terminals and affixed to the insulative housing; a shielding plate sandwiched between the first terminals and the second terminals; a shielding shell enclosing the insulative housing; and a sub shell abutting with the tongue portion and the base portion and contacting with the shielding shell, wherein the sub shell resists against a front surface of the base portion and exposes the tongue portion.