Wire Harness With Flexible Linking Members for Resonance Control
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Solution Overview
Problem
Traditional wire harnesses for high voltage applications in hybrid and electric automobiles face challenges with flexibility, dimensional errors, and resonance issues due to the use of rigid electrical pathways, which affect operativity and require additional packing and transportation space.
Innovation Solution
A wire harness design incorporating division electrical pathways linked by conductive members with lower rigidity and adjustability, allowing for bidirectional bending and serving as a folding, error-absorbing, and resonance-avoiding mechanism, while maintaining shape and reducing size for compact packing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If rigid electrical pathways are adopted to maintain shape, then shape maintenance is improved, but flexibility is lost and packing operation becomes difficult
Solution Approach 1:
The electrical pathway is divided into multiple rigid division electrical pathways connected by flexible linking members. This segmentation allows different parts to have different properties: rigid sections for shape maintenance and flexible sections for operability and packing.
Solution Approach 2:
Different parts of the electrical pathway have different rigidity characteristics. The division electrical pathways are rigid for shape maintenance, while the linking members are flexible for operability. This local differentiation of properties resolves the contradiction between overall shape maintenance and local flexibility needs.
2Stability of the object's composition
If rigid electrical pathways are adopted, then shape stability is improved, but dimensional error absorption capability deteriorates
Solution Approach 1:
The electrical pathway is segmented into rigid division pathways and flexible linking members. The flexible linking members act as buffers that can absorb dimensional errors and variations, while the rigid division pathways maintain overall shape stability.
Solution Approach 2:
The rigidity parameter is changed along the electrical pathway structure. By varying the rigidity from rigid (division pathways) to flexible (linking members), the system achieves both shape stability and dimensional error absorption capabilities.
3Strength
If rigid electrical pathways are used, then structural strength is improved, but resonance frequency issues worsen when included in vehicle vibration range
Solution Approach 1:
The electrical pathway is segmented into rigid and flexible sections. The flexible linking members interrupt the rigid structure, changing the resonance characteristics of the entire assembly to avoid resonance within the vehicle vibration frequency range while maintaining structural strength.
4Ease of operation
If flexible electrical pathways are used, then operativity is improved, but shape maintenance capability deteriorates
Solution Approach 1:
The electrical pathway is divided into flexible linking members and rigid division pathways. The rigid division pathways provide shape maintenance capability, while the flexible linking members provide operativity, allowing the system to achieve both contradictory requirements simultaneously.
Data Source
AI summary
A wire harness which is wired in an automobile for electrical connection includes one or a plurality of electrical pathways. The electrical pathway includes a plurality of division electrical pathways and one or a plurality of conductive linking members which link the division electrical pathways, and the linking member includes a body part and connecting ends that are located at the two ends of the body part. Further, the linking member is formed as a member whose rigidity is lower than that of the division electrical pathways and is adjustable and bendable in predetermined directions.