Modular Plug Wire Sled Layout for Reliable Contact Alignment
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Solution Overview
Problem
Achieving reliable connections between plug contacts and copper wires in telecommunications cables is challenging due to the difficulty in aligning the offset tines of the plug contacts with linearly positioned wires.
Innovation Solution
A modular plug design featuring a housing with angled grooves for positioning individual wires relative to plug contacts, a wire manager to maintain twist and spacing, and a wire sled to facilitate crimping, ensuring proper alignment and contact force for stable electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tines of plug contacts are offset towards opposite sides to straddle the wire, then the connection reliability is improved, but the alignment difficulty between plug contacts and wires increases
Solution Approach 1:
The wire sled pre-positions the wires at the correct angles before the plug contacts are crimped onto them. This preliminary positioning ensures that when the plug contacts engage, their offset tines are already aligned to straddle the wires properly, resolving the alignment difficulty while maintaining connection reliability
Solution Approach 2:
The wire sled acts as an intermediary component between the wires and the plug contacts. It provides the angular positioning function that bridges the gap between the linear wire entry and the angled requirement of offset tines, making the alignment process easier while ensuring reliable connections
2Manufacturing precision
If plug contacts are slotted close together to align with jack contacts, then the electrical interface alignment is improved, but the space for wire positioning becomes more constrained
Solution Approach 1:
The wire sled introduces an angular dimension to wire positioning. By positioning wires at angles rather than linearly, it creates additional spatial arrangement options that accommodate closely spaced plug contacts while still providing adequate space for wire manipulation and crimping operations
3Ease of manufacture
If wires are positioned at angles on the wire sled, then the crimping process is facilitated, but the wire positioning complexity increases
Solution Approach 1:
The wire positioning function is segmented into distinct components: the wire manager handles wire entry and initial routing, while the wire sled handles angular positioning and crimping facilitation. This segmentation allows each component to be optimized for its specific function, making the overall system easier to manufacture despite the angular positioning requirement
Data Source
AI summary
A modular plug is disclosed for terminating a telecommunications cable having twisted pairs of wires. The modular plug includes a housing defining an internal cavity and slots positioned toward a distal end of the housing, each slot being parallel to a central axis of the modular plug. A wire manager is fitted inside the internal cavity, and defines channels for positioning the twisted pairs of wires inside the housing. A wire sled extends from the wire manager and defines a plurality of grooves, each groove shaped to position an individual wire from the twisted pairs of wires at an angle with respect to the central axis. The modular plug further includes a plurality of plug contacts. Each plug contact is held by a slot of the housing and is structured to form an electrical interface with a wire positioned by the wire sled.