USB Receptacle Shielding Member Laser Welded Grounding Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional USB electrical receptacle connectors suffer from electromagnetic interference due to inadequate shielding, affecting the performance of high-frequency transmission in devices like wireless mice and Bluetooth devices.
Innovation Solution
The design incorporates a shielding member with connecting portions laser-welded to flat grounding contacts, creating an electrical connection that grounds electromagnetic noise and prevents crosstalk between signal contacts, enhancing the shielding effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional USB electrical receptacle connector is used without proper shielding, then the device complexity is reduced and manufacturing is easier, but electromagnetic interference increases affecting high-frequency transmission performance
Solution Approach 1:
The shielding member is divided into multiple segments including a shielding body, first connecting portion, and second connecting portion. Each segment serves a specific function: the shielding body provides electromagnetic shielding, while the connecting portions establish electrical connections with grounding contacts. This segmentation allows for optimized shielding performance without excessive overall complexity.
Solution Approach 2:
The shielding member is disposed within the insulation housing bracket, creating a nested structure where the shielding body is positioned between the first and second outer surfaces of the insulation housing. This nesting approach integrates shielding functionality into the existing connector structure without adding external complexity.
2Object-affected harmful factors
If a shielding member with laser welding connections is implemented, then electromagnetic interference is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent replaces traditional mechanical connection methods (such as crimping or screw fastening) with laser welding technology. The first connecting portion and second connecting portion are fixed onto the flat grounding contacts through laser welding, providing more reliable electrical connections and better electromagnetic shielding effectiveness, though this increases manufacturing precision requirements.
3Reliability
If flat grounding contacts are exposed on the insulation housing bracket, then electrical connection is improved, but electromagnetic interference increases without proper shielding
Solution Approach 1:
The shielding member is positioned in advance to cover the exposed flat grounding contacts and signal contacts. The shielding body is disposed within the insulation housing bracket such that it preliminarily blocks electromagnetic interference before the interference can radiate from the exposed contacts. This preliminary protective action maintains reliable electrical connections while preventing electromagnetic interference.
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 configuration effectively reduces electromagnetic interference and improves high-frequency signal transmission performance, ensuring normal operation of electronic devices connected to the USB receptacle connector.
Implementation Method 1
The first connecting portion is fixed onto the first flat grounding contact in a laser welding manner, such that the shielding body is electrically connected to the first flat grounding contact
Implementation Method 2
The shielding member includes a shielding body and a first connecting portion. The shielding body is disposed in the insulation housing bracket... capable of reducing electromagnetic interference
Data Source
AI summary
A receptacle connector includes an insulation housing bracket, a first flat grounding contact and a shielding member. The housing base has a first outer surface, and the first flat grounding contact is combined with the insulation housing bracket. The shielding member includes a shielding body and a first connecting portion. The shielding body is installed inside the insulation housing bracket, and the first flat grounding contact is located between the first outer surface and the shielding member. The first connecting portion protrudes from the shielding body and is securely fixed on the first grounding contact in a laser welding manner, such that the shielding body is electrically connected to the first grounding contact.