Connector Strain Relief Member EMI Shielding Design
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Solution Overview
Problem
Existing connector assemblies for power transmission lack an effective strain relief structure suitable for various applications, leading to unreliable connections and potential electromagnetic interference (EMI) issues.
Innovation Solution
A connector assembly featuring a housing with signal and ground terminals, a strain relief member with a through hole for the signal conductor, and a metal braiding layer that electrically connects with the strain relief member, providing improved mechanical and electrical stability and reduced EMI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cable holder and conductive shell connection methods are used, then electrical connection is achieved, but connection reliability and strain relief are insufficient
Solution Approach 1:
The patent combines the strain relief function and electrical connection function into a single integrated conductive shell structure. The conductive shell directly grasps the metal braiding layer while providing electrical connection to the ground terminal, eliminating the need for separate strain relief components and cable holders, thus improving connection reliability without significantly increasing device complexity.
Solution Approach 2:
The conductive shell is designed to perform multiple functions simultaneously: it provides mechanical strain relief by grasping the metal braiding layer, establishes electrical connection to the ground terminal, and offers structural support for the cable assembly. This multi-functional design improves overall connection reliability while avoiding additional components.
2Object-affected harmful factors
If metal braiding layer is grasped by strain relief area of conductive shell, then EMI is reduced, but adaptability to different applications is limited
Solution Approach 1:
The conductive shell incorporates a flexible grasping structure that can dynamically adapt to different cable configurations and application requirements. The strain relief area is designed to flexibly grasp the metal braiding layer, allowing the structure to accommodate variations in cable size, type, and application-specific requirements while maintaining effective EMI shielding through consistent electrical connection.
3Ease of manufacture
If separate cable holder and conductive shell are used, then assembly is straightforward, but connection stability is compromised
Solution Approach 1:
The patent merges the cable holder and conductive shell into a single integrated component. This unified structure ensures that the metal braiding layer is grasped and electrically connected in a single stable connection point, eliminating potential instability from multiple separate components while maintaining assembly simplicity through the integrated design.
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 solution enhances the reliability of connections and reduces EMI by ensuring secure electrical connections between the cable and the connector assembly, addressing the limitations of previous designs.
Implementation Method 1
a metal braiding layer enclosing the signal conductor... The metal braiding layer usually electrically connects with a single cable holder which electrically connects with a conductive shell, thus, reducing the EMI
Data Source
AI summary
A cable connector assembly (100) includes a housing (2), a signal contact (31), a ground contact (32) assembled to the housing, a circuit board (4) assembled to the housing and electrically connecting with the contacts, a cable (6) comprising a conductor (60) directly connecting with the circuit board (4) and a metal braiding layer (61) electrically with a strain relief member (5) which electrically connects with the circuit board, and a rear cover (7) assembled to the housing to enclose the electrical connection among the cable, the strain relief member, the circuit board and the contacts.