Backplane Connector Shield Structure for Ground Return and EMI Control

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Solution Overview

Problem

Existing backplane connectors suffer from inadequate shielding and grounding return effects due to the disconnected side walls of the metal shield surrounding member, limiting effective electrical connectivity and protection.

Innovation Solution

The backplane connector design incorporates a metal shield surrounding member with a surrounding portion formed by four interconnected side walls, creating fully-enclosed shielding cavities and enabling grounding returns through the connection of side walls, enhancing both shielding and grounding return capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the metal shield surrounding member uses disconnected side walls (U-shaped mounting portion), then the structure is simpler and easier to manufacture, but the grounding return effect is insufficient

Engineering Contradiction:

Improveease of manufactureVSAvoidgrounding return effect

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent merges the disconnected side walls into a continuous enclosed structure by connecting the sixth side wall to the third side wall and the seventh side wall to the fourth side wall, forming a complete shielding cavity that enables effective grounding return while maintaining manufacturing simplicity

Inventive Principle:

Principle #5Merging (Combining)

2Device complexity

If the metal shield surrounding member uses disconnected side walls, then the device complexity is reduced, but the shielding effect is insufficient

Engineering Contradiction:

Improvedevice complexityVSAvoidshielding effect

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent combines the separate wall segments into a unified enclosed shielding cavity, creating a complete Faraday cage structure that effectively blocks electromagnetic interference while avoiding excessive structural complexity

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If the side walls are connected to form enclosed shielding cavity, then the grounding return effect is improved, but the manufacturing complexity increases

Engineering Contradiction:

Improvegrounding return effectVSAvoidease of manufacture

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent integrates the side wall connections into a single stamping forming process, where the metal plate is stamped and bent to create the enclosed cavity with connected side walls in one manufacturing step, maintaining ease of manufacture while achieving improved grounding return

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12489254B2Backplane connector with improved metal shield surrounding member

Publication Date: 2025.12.02 DONGGUAN LUXSHARE TECH CO LTD

AI summary

A backplane connector includes a housing and a number of mounting modules. The housing includes a base defining a number of receiving grooves. The mounting modules are assembled to the receiving grooves. Each mounting module includes an insulating body, a terminal module installed in the insulating body, and a metal shield surrounding member sleeved on the insulating body. The metal shield surrounding member includes a surrounding portion and a mounting portion extending downwardly from the surrounding portion. The surrounding portion is formed by four side walls so as to form a fully-enclosed shielding cavity. As a result, the shielding effect and the grounding return effect of the backplane connector are improved.