Seamless Metallic Shell Electrical Connector EMI Reduction
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Solution Overview
Problem
Existing electrical connectors, such as USB and HDMI, face challenges with insufficient bandwidth and increased electromagnetic interference (EMI) due to complex structures and high manufacturing costs, particularly with the need for higher performance in modern devices.
Innovation Solution
The design of an electrical receptacle connector featuring a seamless metallic shell with internal and external protruding structures, a dual orientation pin assignment, and a symmetrical configuration that reduces EMI and RFI while allowing for a non-crack configuration, enhancing structural strength and aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If elastic pieces are assembled on the insertion opening of the inner metal shell to reduce EMI, then electromagnetic interference reduction is improved, but the number of components increases and manufacturing complexity increases
Solution Approach 1:
The patent integrates the EMI shielding function directly into the metallic shell structure by forming protruding structures that extend into the receptacle cavity. This merges the shell's structural role with its EMI shielding role, eliminating the need for separate elastic pieces while maintaining electromagnetic interference reduction.
Solution Approach 2:
The patent extracts the EMI shielding function from separate components (elastic pieces) and incorporates it directly into the metallic shell through integrated protruding structures. This extraction simplifies the overall device by removing unnecessary separate components.
2Object-affected harmful factors
If a non-crack configuration is used for the metallic shell to reduce EMI, then electromagnetic interference reduction is improved, but manufacturing complexity increases
Solution Approach 1:
The metallic shell is designed with segmented protruding structures that extend into the receptacle cavity. These segments can be formed through stamping or molding processes, allowing the non-crack configuration to be manufactured efficiently without requiring complex assembly steps.
Solution Approach 2:
The patent utilizes stamping or molding parameters to directly form the protruding structures on the metallic shell. By adjusting forming parameters such as die design and material flow, the non-crack configuration with integrated EMI shielding features can be produced efficiently in a single manufacturing step.
3Reliability
If multiple components are used to achieve plug-and-insert design, then connection reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple functions (structural support, EMI shielding, and connection reliability) into the integrated metallic shell design. The protruding structures provide both mechanical engagement for reliable connection and EMI shielding, eliminating the need for separate elastic pieces and reducing overall manufacturing cost.
Data Source
AI summary
An electrical receptacle connector includes an insulated housing in a metallic shell. First and second receptacle terminals are on the insulated housing. The receptacle terminals include first and second high-speed signal terminals. The metallic shell includes a receptacle cavity for receiving the insulated housing, an insertion opening being in communication with the receptacle cavity, pins at two sides of the metallic shell and outwardly extending, and an external protruding structure on a bottom surface for connecting to a circuit board. The external protruding structure forms an enclosed structure. Therefore, the seamless configuration improves the reduction to electromagnetic interference.