USB Type-C Connector Grounding Member Segmentation
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Solution Overview
Problem
Conventional USB type-C electrical connectors have insufficient shielding performance due to gaps in the metallic shell, leading to electromagnetic interference and reduced signal quality, and the manufacturing of connectors with grounding plates is complex, resulting in lower defect-free rates.
Innovation Solution
The design separates the grounding member from the one-piece grounding plate, allowing them to be assembled separately without gaps, enhancing structural strength and manufacturing efficiency, and includes conductive sheets for improved shielding, reducing electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a one-piece grounding plate is used in the insulated housing, then the shielding performance is improved, but the manufacturing complexity increases and the defect-free rate decreases
Solution Approach 1:
The grounding plate is divided into multiple separate grounding components instead of using a one-piece grounding plate. Each grounding component can be independently manufactured and then assembled into the insulated housing, reducing manufacturing complexity while maintaining the shielding function against electromagnetic interference.
2Manufacturing precision
If fixtures are used to position terminals and grounding plate during molding, then the positioning accuracy is improved, but the manufacturing process becomes more complex
Solution Approach 1:
Positioning structures such as positioning protrusions and positioning grooves are pre-formed on the terminals and grounding components before assembly. These pre-formed positioning features ensure accurate alignment during the molding and assembly processes without requiring complex external fixtures, thereby maintaining positioning accuracy while simplifying the manufacturing process.
3Manufacturing precision
If openings are provided in the grounding plate for fixture insertion, then the positioning during molding is improved, but the structural strength of the grounding plate is reduced
Solution Approach 1:
Instead of providing openings in a one-piece grounding plate which would compromise its structural strength, the grounding function is achieved through multiple separate grounding components. These components are assembled into the insulated housing without requiring openings, thereby maintaining both positioning capability during molding and the structural strength of the grounding system.
4Ease of manufacture
If the grounding plate is deformed during manufacturing, then the assembly process becomes easier, but the product quality and defect-free rate decrease
Solution Approach 1:
The grounding system is segmented into multiple rigid components rather than one large deformable plate. Each component can be manufactured with precise dimensions and maintained structural integrity, eliminating the need for deformation during assembly and ensuring high product quality and defect-free rate.
5Ease of manufacture
If gaps are formed in the metallic shell, then the manufacturing process is simplified, but the shielding performance is reduced
Solution Approach 1:
The shielding function is achieved through multiple separate grounding components and conductive sheets that are assembled into the insulated housing, rather than relying on a continuous metallic shell with gaps. This segmented approach maintains effective electromagnetic shielding while allowing for simpler manufacturing processes.
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
This design improves shielding performance, reduces electromagnetic interference, and increases the defect-free rate of USB type-C connectors by simplifying the manufacturing process and enhancing structural integrity.
Implementation Method 1
the connector merely has the outer iron shell for enclosing the terminals and the insulated housing for holding the terminals to shield the electromagnetic waves
Implementation Method 2
a grounding plate is in the insulated housing. Therefore, the electromagnetic interferences can be reduced by the shielding of the outer iron shell and the grounding plate
Data Source
AI summary
An electrical receptacle connector includes a first terminal module, a grounding member, a second terminal module, and a metallic shell. The first terminal module includes a first insulated housing, a plurality of first terminals, and a grounding plate. The first insulated housing includes two grooves. The first terminals and the grounding plate are in the first insulated housing. A surface of the grounding plate is exposed from the first insulated housing. The grounding member includes two side protrusions and two protruding structures. The side protrusions are engaged with the grooves. The protruding structures are in contact with the grounding plate. The second terminal module is assembled to the first terminal module. The grounding member is between the first terminal module and the second terminal module.