Electrical Connector Contact Structure for Radiation Noise Suppression
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Solution Overview
Problem
Existing electrical connectors experience unnecessary high-frequency radiation noise due to a minute gap between the mounting portion of the male and female connectors, leading to potential differences in electrical potential and ineffective electrical connection.
Innovation Solution
The electrical connector design includes an external terminal with a contact support portion that elastically displaces in the thickness direction, converting lateral displacement into vertical displacement to ensure electrical contact and minimize radiation noise, using phosphor bronze for elasticity and gold plating for conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a convex portion of the outer frame portion and a concave portion of the inner frame portion are used for electrical connection, then electrical connection between connectors is achieved, but a minute gap remains between the mounting portion and top surface causing potential difference and radiation noise
Solution Approach 1:
The contact support portion extends in the thickness direction (Z-axis) of the insulating member, adding a vertical dimension to the electrical connection path. This allows the free-end portion to bridge the gap between connectors by contacting the top surface, complementing the horizontal electrical connection between convex and concave portions.
Solution Approach 2:
The contact support portion acts as an intermediary element that bridges the gap between the mounting portion and the top surface. It provides an additional electrical connection path through the free-end portion that contacts the top surface, eliminating the potential difference that causes radiation noise.
2Ease of manufacture
If the connector structure is simplified, then manufacturing is easier, but electrical connection reliability deteriorates due to the minute gap
Solution Approach 1:
The contact support portion serves multiple functions: it provides mechanical support, establishes electrical connection, and eliminates potential difference. This multi-functional element improves reliability without significantly complicating the manufacturing process, as it is integrated into the external terminal structure.
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 design effectively suppresses unnecessary radiation noise by ensuring electrical contact despite minute gaps, maintaining reliable connectivity and reducing electromagnetic interference.
Implementation Method 1
the free-end portion of the second tab portion is elastically displaced in the thickness direction of the insulating member as a reaction of the elastic displacement of the first tab portion
Data Source
AI summary
An electrical connector that effectively suppresses unnecessary radiation noise and an electrical connector set having the electrical connector. The electrical connector includes internal terminals, an insulating member that holds the internal terminals, and an external terminal that surrounds the internal terminals. The external terminal includes peripheral edge portions that cover a frame portion of the insulating member, and a contact support portion supported by peripheral edge portions. The contact support portion includes a first tab portion that is connected to the peripheral edge portions and extends in a direction away from the frame portion, a bridge portion that is connected to the first tab portion and extends in a direction that differs from the direction in which the first tab portion extends, and a second tab portion that is connected to the bridge portion and has a free-end portion that extends toward the frame portion.