Shielding Plate Hooked Shrapnels Electrical Connector Assembly
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Solution Overview
Problem
The production of smaller electrical connectors with metallic shielding plates between conductive terminals leads to increased production reject ratios and costs due to the complexity of arranging four rows of connecting portions.
Innovation Solution
An electrical connector design featuring a first and second terminal module with mating tongues, conductive terminals, and a metallic shielding plate between the connecting sections, where the shielding plate is elastically hooked to the shielding shell, reducing interference and production costs by separating the terminals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If four rows of connecting portions are arranged closely to reduce connector size, then the connector becomes smaller, but the production reject ratio increases and production cost increases
Solution Approach 1:
A metallic shielding plate is introduced as an intermediary component between the four rows of connecting portions. This shielding plate serves as a mediator that separates the closely arranged terminal rows, reducing electromagnetic interference while providing a reference for positioning and assembly. The shielding plate with its hooked shrapnels facilitates proper alignment during assembly, thereby reducing production reject ratio despite the dense arrangement of connecting portions.
Solution Approach 2:
The metallic shielding plate provides localized shielding between specific terminal rows that require isolation. Instead of uniformly shielding the entire connector, the shielding plate is strategically positioned only where electromagnetic interference is most critical - between the closely arranged connecting portions. This localized approach maintains small connector size while effectively managing interference in the critical areas.
2Volume of moving object
If four rows of connecting portions are arranged closely to reduce connector size, then the connector becomes smaller, but production cost increases
Solution Approach 1:
The metallic shielding plate combines multiple functions into a single component: it provides electromagnetic shielding between terminal rows, serves as a positioning reference for assembly, and acts as a ground reference. By merging these functions into one component rather than using separate elements for each function, the overall component count is reduced, simplifying the assembly process and reducing production costs despite the dense terminal arrangement.
Solution Approach 2:
The shielding plate acts as a mediator that simplifies the assembly process by providing built-in positioning features (hooked shrapnels) that guide the placement of terminal rows. This intermediary component eliminates the need for additional positioning fixtures or complex alignment procedures, thereby reducing assembly time and production costs while maintaining the compact four-row configuration.
3Object-affected harmful factors
If metallic shielding plate is added between conductive terminals, then signal interference is reduced, but device complexity increases
Solution Approach 1:
The metallic shielding plate is designed to perform multiple functions simultaneously: it provides electromagnetic shielding between terminal rows, serves as a ground reference, and incorporates hooked shrapnels for assembly positioning. By making the shielding plate universal and multi-functional, the overall device complexity is minimized because a single component accomplishes what would otherwise require multiple separate elements.
Solution Approach 2:
The shielding plate is made from the same metallic material as the shielding shell, creating a homogeneous metallic shielding system. This material homogeneity simplifies the overall structure and manufacturing process, as the same material can be used for both the internal shielding plate and the external shielding shell, reducing the number of different material types and assembly steps required.
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 design reduces signal interference between differential signal terminals, enhances high-frequency transmission rates, and lowers production costs by simplifying the assembly process and improving grounding effects.
Implementation Method 1
a plurality of hooked shrapnels elastically contacting with the shielding shell
Data Source
AI summary
An electrical connector includes a first terminal module, a second terminal module, a shielding shell and a metallic shielding plate. The first terminal module includes a first mating tongue and first terminals insert molded thereamong. The first mating tongue has a first mating face on which the first terminals are exposed. The first terminals have first connecting sections extending in a vertical direction. The second terminal module includes a second mating tongue and second terminals insert molded thereamong. The second mating tongue has a second mating face directly facing to the first mating face and a third mating face. The second terminals are disposed in the second and third mating faces and have second connecting sections extending in the vertical direction. The metallic shielding plate is disposed between the first and second connecting sections and has a plurality of hooked shrapnels elastically contacting with the shielding shell.