C7 Plug Assembly with Ribbed Shield and Matrix Contacts
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Solution Overview
Problem
Existing modular plug designs face challenges in maintaining reliable connections at high data transmission speeds due to cross-talk and interference, especially with Category 7 standards requiring more complex contact formations and extensive shielding, which can lead to intermittent connections and signal degradation.
Innovation Solution
A method involving a shield with ribbed channels to separate twisted pairs, a contact holder with varying contact lengths, and crimping contacts through the holder and plug body into the wires, ensuring secure mechanical and electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If extra shielding and complex contact formations are used to handle high-speed data transmission, then signal degradation is minimized, but device complexity increases
Solution Approach 1:
The plug is divided into modular components: a contact holder assembly with multiple contact holders, each contact holder containing multiple contacts arranged in a matrix pattern. This segmentation allows for systematic organization of contacts while maintaining signal integrity through proper spacing and shielding integration.
Solution Approach 2:
The contact holders are nested within the plug body, with each contact holder containing multiple contacts. The contacts are arranged in a nested matrix pattern where inner contacts are surrounded by outer contacts, allowing efficient use of space while maintaining proper signal isolation through integrated shielding.
2Ease of manufacture
If contacts are aligned on a single side of the plug body, then assembly is simpler, but cross-talk between contact pairs increases
Solution Approach 1:
The contacts are arranged in a two-dimensional matrix pattern on both the top and bottom surfaces of the plug body, transitioning from a single-sided linear arrangement to a multi-dimensional spatial configuration. This dimensional change allows for better separation of contact pairs, reducing cross-talk while maintaining assembly feasibility through the structured matrix layout.
3Ease of operation
If a pyramidal pin is pushed through insulated wires to mate contacts, then connection is established, but connection reliability degrades over time
Solution Approach 1:
The contact holders are pre-formed with contact elements positioned in their final locations before assembly. The contacts are pre-attached to the contact holders with proper orientation and spacing, eliminating the need for field termination with pins that can degrade. This preliminary preparation ensures consistent, reliable connections from the outset.
Solution Approach 2:
The mechanical pin-through-wire connection system is replaced with a crimp-based contact holder assembly system. The contacts are crimped onto the wire conductors within the contact holders, providing a more reliable mechanical and electrical connection that resists degradation over time compared to pin-based systems.
Data Source
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AI summary
A method and system for terminating a cable into a plug using a plug assembly system. Wires of the cable are exposed and dressed on to a shield. A plug body is placed over the shield. The wires are fed into wire insertion holes of the plug body. A contact holding member is placed on the plug body. A crimping tool crimps the contacts in the contact holding member through the plug body into and through the wires to achieve mechanical and electrical connection between the wires and the contacts. A cover may be used to cover the plug body, shield and wires. A crimp ferrule may be used to crimp the wires to the shield.