Axle-Routed Electric Wire Layout for Wheel-Side Harness Durability
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Solution Overview
Problem
The durability of the wire harness connecting vehicle body-side and wheel-side devices is compromised due to swinging and expansion/contraction when the vehicle body and wheel-side devices swing, leading to potential damage.
Innovation Solution
Rout the electric wire along the axle, torque rod, and cross member, using connection points to absorb tensile and compression forces, and form bent portions to prevent contact with vehicle components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the wire harness is connected at the shortest distance between the vehicle body-side device and the vehicle wheel-side device, then the connection length is minimized, but the wire harness durability deteriorates due to swinging and expansion/contraction
Solution Approach 1:
The patent introduces an intermediary structure (the vehicle wheel and axle system) through which the wire harness is routed. The wire harness passes through the vehicle wheel center and along the axle, using these rigid structural elements as mediators to support the wire harness. This intermediary routing prevents the wire harness from swinging freely and expanding/contracting during vehicle operation, thereby improving durability while maintaining reasonable connection length.
2Ease of manufacture
If the wire harness is routed through the air between devices, then installation is simple, but the wire harness durability deteriorates due to exposure to swinging forces
Solution Approach 1:
The patent implements a nested routing configuration where the wire harness is threaded through the vehicle wheel center and along the axle structure. The wire harness is nested within the vehicle's structural framework (wheel and axle), utilizing the existing structural cavities and pathways. This nested arrangement provides mechanical support and protection without requiring complex external mounting structures, maintaining installation simplicity while dramatically improving durability.
Data Source
AI summary
A vehicle includes a first unit on which a rotary electric machine is mounted, a second unit on which an inverter is mounted, an electric wire that electrically connects the first unit and the second unit, and a vehicle wheel that is dynamically connected downstream of the first unit via an axle, in which the electric wire has a portion routed along the axle.