Vehicle Cable Break-Point Layout for Crash Shock Isolation
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Solution Overview
Problem
Existing electric cables, especially those in vehicles, are hazardous when damaged due to exposure to exceptional circumstances like crashes, as they can lead to short circuits and electric shocks, as the conductor isolation can be compromised, allowing human contact with the conductor.
Innovation Solution
A cable design with strategically placed break points in both the conductor and conductor isolation, allowing predictable failure under specific force limits, ensuring the conductor remains isolated and preventing human contact or short circuits, even after a crash.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cable uses a continuous conductor and conductor isolation without break points, then the cable maintains electrical integrity during normal operation, but the cable becomes hazardous when damaged as the conductor isolation can be compromised allowing human contact with the conductor
Solution Approach 1:
The cable is divided into segments with predetermined break points in both the conductor and conductor isolation. These break points create discrete sections that can fail independently, preventing continuous exposure of conductors along the entire cable length when damage occurs.
Solution Approach 2:
Break points are pre-positioned in both the conductor and conductor isolation at different locations along the cable. This preliminary arrangement ensures that when the cable is damaged, the isolation breaks before or at different points than the conductor, maintaining safety margins.
2Object-affected harmful factors
If the cable is designed to break at predetermined break points under excessive force, then the cable prevents hazardous electric shock by isolating the conductor, but the cable loses its ability to maintain continuous electrical distribution under abnormal conditions
Solution Approach 1:
The cable design converts the harmful effect of excessive force that could cause uncontrolled damage into a beneficial controlled failure mechanism. When force exceeds the threshold, the cable breaks at predetermined points in a controlled manner that maintains safety by ensuring isolation breaks before or at different points than the conductor.
Solution Approach 2:
The cable incorporates preliminary protective measures through break points designed to fail at specific force thresholds. This preliminary anti-action prevents worse outcomes by ensuring that when damage occurs, it follows a predetermined safe failure pattern rather than random uncontrolled damage.
3Device complexity
If the conductor and conductor isolation break points are located at the same position, then the cable structure is simplified, but the conductor isolation cannot reliably prevent human contact with the conductor after damage
Solution Approach 1:
The cable design introduces asymmetry by positioning break points in the conductor and conductor isolation at different locations along the cable length. This asymmetric arrangement ensures that when the cable is damaged, the isolation and conductor break at different points, creating a safety margin that prevents direct exposure of conductors.
Data Source
AI summary
A cable includes a first conductor and a first conductor isolation, wherein the first conductor includes at least a first break point between the first and second end of the cable and the first conductor isolation includes at least a second break point between the first and second end of the cable, the cable is configured so that the first conductor breaks at the at least first break point if the cable is exposed to a force that is above a first predetermined limit and first conductor isolation breaks at the at least second break point if the cable is exposed to a force that is above a second predetermined limit for avoiding hazardous electric shock after a crash of the vehicle.