Electrical Connector Guide Shell Alignment
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Solution Overview
Problem
Existing electrical connectors lack effective guidance for horizontal alignment, leading to potential scratching of the insulating body during mating, which affects the connector's service life and accuracy.
Innovation Solution
An electrical connector design featuring a protruding projection on the side plates of the insulating body and corresponding fitting portions on the shielding shell, along with a guide chamfer and abutting portions, enhances alignment and strength to prevent scratches and improve service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no guiding device is designed between receptacle and plug, then device complexity is reduced, but alignment precision deteriorates causing scratching of insulating body
Solution Approach 1:
A guide shell is introduced as an intermediary component between the receptacle and plug connectors. The guide shell includes guiding surfaces that contact corresponding surfaces on the plug connector during mating, providing horizontal alignment guidance. This mediator enables accurate alignment without requiring complex integrated guiding mechanisms, thus resolving the contradiction between device complexity and alignment precision.
2Manufacturing precision
If guide shell is added to provide alignment guidance, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The connector system is segmented into distinct functional components: the receptacle connector, the plug connector, and the guide shell. The guide shell is further segmented into a body portion and a guiding portion. This segmentation allows each component to perform its specific function independently, simplifying the overall design while achieving precise alignment through the specialized guiding structures.
Solution Approach 2:
The guide shell serves multiple functions: it provides horizontal alignment guidance through its guiding surfaces, protects the insulating body from scratches by intercepting misaligned plug connectors, and facilitates smooth mating between connectors. By consolidating these functions into a single component, the design achieves precise alignment without proportionally increasing overall device complexity.
3Measurement precision
If plug connector is guided by elastic arms for vertical positioning, then vertical alignment is improved, but horizontal alignment remains insufficient causing tongue deviation
Solution Approach 1:
Different portions of the guide shell are designed with different functional qualities. The guiding surfaces are specifically designed with appropriate roughness and geometric features to provide horizontal alignment guidance, while other portions of the guide shell may have different surface characteristics. This local differentiation of quality allows the guide shell to effectively address horizontal alignment issues without compromising the vertical alignment provided by the elastic arms.
Data Source
AI summary
An electrical connector includes an insulating body having a base portion, which includes a mating chamber enclosed by a top plate, a bottom plate and two side plates. The mating chamber allows a insertion portion of a mating connector to insert backward therein. The top and bottom plates are provided with multiple accommodating grooves. A projection protrudes from each side plate. The projection has a highest point higher than the mating chamber, and a lowest point lower than the mating chamber. Multiple terminals are correspondingly accommodated in the accommodating grooves. A shielding shell has a top wall and two side walls. A mating port is enclosed by the top wall and front ends of the two side walls and located in front of the projection, and is larger than the mating chamber. Each side wall is respectively and correspondingly provided with a fitting portion to fit with the projection.