Concentric Video Arm Pivot With Internal Wiring Routing
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Solution Overview
Problem
Conventional seat assemblies for passenger vehicles fail to effectively conceal and arrange wiring, leading to durability issues due to bending during arm movement, which reduces the lifespan of wiring components.
Innovation Solution
An articulating arm assembly with a static and rotation portion, featuring a wiring portion that extends parallel to the rotation axis, a one-way bearing, friction plate, and release mechanism, which secures the arm in stowed and deployed positions while minimizing bending of wires by routing them internally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wires/cables wrap around portions of the hinge assembly, then the wiring can be connected to the electronic device, but the wires/cables bend during movement of the arm which causes durability problems
Solution Approach 1:
The patent transitions the wiring arrangement from a two-dimensional wrapping path around the hinge to a three-dimensional routing through the interior of the arm assembly along the rotation axis. This dimensional change allows the wiring to bypass the bending zone entirely while maintaining electrical connectivity, thereby resolving the contradiction between ease of connection and wiring durability
2Ease of manufacture
If wires/cables are routed externally around the hinge, then installation is simple, but the wiring is exposed to bending and wear during arm movement
Solution Approach 1:
The patent nests the wiring within the interior cavity of the arm assembly, placing it inside the structural housing rather than externally. This nesting protects the wiring from external mechanical stresses and bending during movement, extending its operational lifespan while maintaining a clean integrated appearance
3Adaptability or versatility
If the arm assembly includes articulating hinges for movement, then the electronic device can be positioned flexibly, but the wiring must bend with the hinge movement which reduces wiring life
Solution Approach 1:
The patent extracts the wiring from the hinge movement zone entirely by routing it through the arm's interior along the rotation axis. This separation removes the wiring from the bending stress environment while preserving the hinge's articulation functionality for device positioning, thus maintaining adaptability without compromising reliability
Data Source
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AI summary
An articulating arm assembly for a passenger seat includes a static portion attached to the passenger seat, a rotation portion attached to the static portion such that the rotation portion pivots about a rotation axis, an arm body attached to the rotation portion, the rotation portion and the arm body include a stowed position and a deployed position, and a wiring portion disposed inside the arm body and extending from the arm body into the rotation portion. The wiring portion may be disposed such that it extends parallel to the rotation axis from the rotation portion toward and into the static portion.