Rotatable Wiring Harness for Aircraft Testing
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Solution Overview
Problem
Conventional wiring harnesses face challenges in adapting to changing physical pathways and electromagnetic interference, particularly in aircraft systems, where cables need to be repositioned in real-time to accommodate varying access angles and obstacles while maintaining environmental and electromagnetic shielding.
Innovation Solution
A rotatable wiring harness with a swivel bushing mechanism that allows for adjustable orientation of the connecting cable relative to the interface connector, enabling rotation and vertical displacement, thereby accommodating different physical pathways and providing electromagnetic interference shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed cable to connector assembly is used, then the cable orientation is stable and reliable, but the cable cannot be repositioned to accommodate changing pathways or obstacles
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed connector assembly into a rotatable one. The connector housing is designed to rotate relative to the cable assembly through a controlled range of motion, allowing the cable orientation to change dynamically while maintaining electrical connectivity. This enables the system to adapt to different pathways and obstacles without requiring multiple fixed assemblies.
2Adaptability or versatility
If multiple fixed cable assemblies are provided for different orientations, then all possible pathways are covered, but the quantity of cables and device complexity increases
Solution Approach 1:
The patent implements universality by designing a single cable assembly that can perform multiple functions through rotation. Instead of requiring separate cable assemblies for different orientations, one universal rotatable assembly can achieve all necessary orientations by rotating to different angles, thereby covering all pathways with a single multi-functional device.
Solution Approach 2:
The patent merges multiple cable orientation functions into a single integrated rotatable connector assembly. The rotation mechanism combines the functions of what would otherwise require multiple separate fixed assemblies, consolidating them into one unified structure that can be positioned in various orientations as needed.
3Adaptability or versatility
If flexible cable is used to conform to walls and avoid obstacles, then the cable can adapt to pathways, but the cable may not be compatible with the test point connector
Solution Approach 1:
The patent applies local quality by differentiating the properties of different parts of the cable assembly. The cable portion maintains flexibility for navigating pathways, while the connector housing portion provides structural rigidity and precise rotational control. This localized differentiation allows each part to optimize its function - the flexible cable adapts to pathways while the structured connector ensures reliable electrical connection.
Data Source
AI summary
The wiring harness provided herein affords adjustability of the relative orientation between the connecting cable and its interface connector in real time, during field applications. The harness rotates to accommodate varying access angles to the desired test point connector. A cable conduit of the harness can be adjusted vertically relative to the axis of its interface connector, as well. Cable wire integrity is maintained during manipulations of the cable conduit relative to the harness electrical connector and stress on the wires is minimized. The harness can be sealed from moisture and environmental factors. The harness can provide shielding from electromagnetic interference for the cabling housed therein. The present harness is well suited for service in high heat environments in, for example, testing of aircraft systems. A cylinder receives the cabling conduit and swivels within a slotted backshell. Slot configuration can limit the translation of the cable conduit.