Shield Connector Contact Protrusions for EMI Blocking and Corrosion Control
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Solution Overview
Problem
Conventional high-voltage shield connectors suffer from poor electromagnetic wave blocking performance due to inadequate adhesion between the shield braid and the shield housing, and corrosion occurs due to contact between dissimilar metals.
Innovation Solution
A connecting component for shielding a connector is designed with a housing body that surrounds a wire, featuring a mounting groove and contact protrusions to improve adhesion with the shield braid, and an anti-corrosion plating layer made of the same metal material as the shield braid to prevent corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamp is used to fix the shield braid to the shield housing, then the shield braid can be fixed, but the electromagnetic wave blocking performance is poor due to poor adhesion
Solution Approach 1:
The shield housing is divided into multiple contact protrusions that independently contact the shield braid at different locations. This segmentation increases the total contact area and improves adhesion between the shield braid and shield housing, thereby enhancing electromagnetic wave blocking performance.
Solution Approach 2:
The contact protrusions extend in the radial direction from the mounting groove, creating a three-dimensional contact structure. This dimensional change allows the shield braid to contact multiple surfaces of the protrusions, significantly increasing the contact area and adhesion strength.
2Reliability
If aluminum shield housing and copper shield braid are used, then electromagnetic shielding is achieved, but corrosion occurs due to contact between dissimilar metals
Solution Approach 1:
An anti-corrosion plating layer is introduced as an intermediary between the aluminum shield housing and the copper shield braid. This plating layer prevents direct contact between the dissimilar metals, eliminating galvanic corrosion while maintaining electromagnetic shielding effectiveness.
Solution Approach 2:
The shield housing is constructed as a composite structure with an aluminum base material providing mechanical strength and a plating layer providing corrosion resistance. This composite approach combines the advantages of different materials while mitigating their disadvantages.
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 electromagnetic wave blocking performance by improving adhesion between the shield components and preventing contact corrosion, thereby improving the overall electromagnetic interference (EMI) shielding effectiveness.
Implementation Method 1
the housing body may be made of synthetic resin, the housing body may be provided on the outer surface thereof with a conductive plating layer to block electromagnetic waves
Implementation Method 2
the housing body may be provided on the outer surface thereof with an anti-corrosion plating layer. The anti-corrosion plating layer may be made of the same metal material as the second shield component
Data Source
AI summary
A connecting component for shielding a connector, and a shield connector including the same, improve electromagnetic wave blocking performance by improving adhesion to a shield component. The connecting component for shielding a connector includes: a housing body configured to surround at least a portion of a wire and to have a first end portion to which a first shield component is coupled and a second end portion to which a second shield component is coupled; a mounting groove formed in the second end portion of the housing body to allow the second shield component to be mounted therein; and a plurality of contact protrusions formed in the mounting groove so as to be in contact with the second shield component coupled to the second end portion of the housing body.