Cable Connector Reducing Impedance via Spacer Slot Design
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Solution Overview
Problem
Existing cable connectors face increased impedance due to limited terminal and core wire sizes, restricting the diameter of core wires that can be soldered and affecting electrical performance.
Innovation Solution
The cable connector design features an insulative body with terminals and a spacer that includes wider receiving slots and stopping walls, allowing for larger diameter core wires to be soldered by increasing the width of the terminals and the distance between stalls, thereby reducing impedance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the terminal and core wire sizes are limited by the groove structure, then the connector structure is simple and easy to manufacture, but the impedance of the terminals and core wires increases
Solution Approach 1:
The patent changes the geometric parameters of the receiving slot, specifically making the slot width larger than the terminal width and increasing the distance between adjacent slots. This parameter change allows larger diameter core wires to be used, thereby reducing impedance while maintaining manufacturing simplicity
Solution Approach 2:
The patent introduces a new dimensional consideration by emphasizing the distance between adjacent slots in addition to the slot width. This dimensional change provides an additional degree of freedom for reducing impedance without compromising the structural integrity or manufacturing ease of the connector
2Object-affected harmful factors
If the receiving slot width is increased to reduce impedance, then the impedance of terminals and core wires decreases, but the terminal may move upwardly or rearwardly
Solution Approach 1:
The patent applies local quality by making the receiving slot width locally larger than the terminal width only in the critical regions where impedance reduction is needed, while maintaining adequate spacing and positioning features in other regions to prevent terminal movement. This localized dimensioning achieves impedance reduction without compromising overall stability
Solution Approach 2:
The spacer acts as an intermediary component between the insulative body and the terminals. It provides the enlarged receiving slots that reduce impedance while also providing the stopping walls that prevent terminal movement, thus mediating between the conflicting requirements of low impedance and high stability
3Object-affected harmful factors
If the distance between stalls is increased to accommodate larger core wires, then the impedance reduces, but the spacer structure becomes more complex
Solution Approach 1:
The spacer is designed to perform multiple functions simultaneously: it provides enlarged receiving slots for impedance reduction, maintains the positional relationship between terminals, and incorporates stopping walls for mechanical support. This multi-functionality reduces the need for additional components, thereby limiting the increase in overall structural complexity despite the increased distance between slots
Data Source
AI summary
A cable connector for soldering to a cable defining some core wires includes an insulative body, a plurality of terminals, and a spacer. Each terminal includes a soldering portion extending rearwardly out of the insulative body soldering to the core wires. The spacer includes some stalls and a respective receiving slot formed between every two adjacent stalls for receiving the soldering portions. The receiving slot includes a first receiving slot proximal to the insulative body and a second receiving slot distal from the insulative body. The second receiving slot includes a lower receiving space and an upper receiving space with a smaller width. The soldering portion of the terminal includes a first portion received in the lower receiving space and a second portion received in the first receiving slot. The width of the first portion is larger than the width of the second portion to reduce the impedance.