Shielded Twisted Pair Cable Harness With Inner Ferrule Separator
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Solution Overview
Problem
The existing cable harness assemblies with shielded twisted pair cables face difficulties in assembly and servicing due to the reliance on a single ferrule for securing components, which complicates impedance control and increases complexity.
Innovation Solution
A cable harness assembly design featuring a conductive inner ferrule with a cable passageway and separator, allowing for separate management of twisted and untwisted regions of the cable, improving assembly and impedance control through a connector assembly with a housing, outer ferrule, and inner contacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single ferrule is used to secure both housing components and cable, then device complexity is reduced, but assembly difficulty increases and servicing becomes more complex
Solution Approach 1:
The single ferrule is divided into two separate ferrules: an inner ferrule that secures the cable to the housing, and an outer ferrule that secures the housing components together. This segmentation allows each ferrule to perform its specific function independently, making assembly easier while maintaining structural simplicity.
2Adaptability or versatility
If the shielded twisted pair cable is untwisted inside the housing, then connection to other electrical elements is enabled, but impedance control becomes complicated
Solution Approach 1:
The cable is untwisted and positioned within the inner ferrule before the final assembly is completed. This preliminary action allows the cable to be in the correct configuration for impedance control before being secured, enabling both connection capability and impedance precision.
Solution Approach 2:
The inner ferrule acts as an intermediary structure that holds the untwisted cable in a controlled position. This intermediary element provides a reference framework that maintains impedance control while allowing the cable to be connected to electrical elements.
3Device complexity
If the ferrule is the only element securing components, then device complexity is reduced, but servicing difficulty increases
Solution Approach 1:
By segmenting the ferrule into inner and outer components with distinct functions, each component can be independently serviced or replaced. The inner ferrule can be accessed and serviced without removing the outer ferrule, significantly improving ease of repair while maintaining a relatively simple overall structure.
Data Source
AI summary
A cable harness assembly includes a cable having a pair of wires and a connector assembly including an inner ferrule formed of a conductive material. Each of the wires has a conductor and a insulation disposed around the conductor. The pair of wires have a twisted region and an untwisted region. The inner ferrule has a cable passageway extending through the inner ferrule and a separator disposed within the cable passageway. The untwisted region is disposed in the inner ferrule and the separator is disposed between the wires in the untwisted region.