Terminal Module Plastic Guide Reduces Gap for Impedance Matching
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Solution Overview
Problem
Existing terminal modules experience signal transmission integrity issues due to a stub effect caused by an overhanging guide portion, affecting impedance matching during high-speed signal transmission.
Innovation Solution
Incorporating a plastic part at the front end of the conductive terminal to reduce the gap between the contact portions of the conductive and mating terminals to less than 0.1 mm, thereby minimizing the capacitance effect and improving impedance matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an overhanging guide portion is used to form a stub effect at the front end of the conductive terminal, then the guide portion can provide structural support and positioning, but it causes signal transmission integrity issues and affects impedance matching during high-speed signal transmission
Solution Approach 1:
The patent removes the overhanging guide portion from the conductive terminal structure. Instead, a separate plastic guide structure is provided in the housing, which supports the terminal without creating a stub effect that would interfere with signal transmission. This extraction of the guide function from the conductive terminal itself resolves the contradiction between structural support and signal integrity.
2Reliability
If the gap between the contact portion of the conductive terminal and the mating terminal is reduced to less than 0.1 mm, then impedance matching is improved and capacitance effect is minimized, but the manufacturing precision requirement increases
Solution Approach 1:
The patent introduces a plastic guide structure as an intermediary element between the conductive terminal and the housing. This guide structure provides precise positioning and spacing, ensuring the gap between contact portions is controlled within 0.1 mm. The intermediary structure absorbs the manufacturing precision requirements, making it easier to achieve the tight gap tolerance for optimal impedance matching.
3Reliability
If a plastic part is added to the front end portion of the conductive terminal, then the gap control and impedance matching are improved, but the device complexity increases
Solution Approach 1:
The patent merges the plastic guide structure with the housing rather than making it a separate component attached to the conductive terminal. The plastic part is integrated into the housing structure, providing both guidance and spacing functions while reducing the overall number of components. This merging approach improves impedance matching without proportionally increasing device complexity.
Data Source
AI summary
A terminal module includes: a conductive terminal to be contacted and cooperated with a mating terminal, the conductive terminal including a base and a mating end at a front of the base, the mating end including a contact portion to be contacted and cooperated with the mating terminal and a front end portion at a front end of the contact portion; and a plastic part, wherein the plastic part is arranged at the front end portion so that a gap between the contact portion of the conductive terminal and the mating terminal is less than 0.1 mm after cooperated.