Vehicle Ground Wire Segmentation for Offset Collision Safety
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Solution Overview
Problem
Existing collision safety control devices face reliability issues during offset collisions due to incomplete ground wiring, which can lead to disconnection and failure of airbag deployment, and are vulnerable to damage from lightning strikes.
Innovation Solution
A collision safety control device with multiple ground wire connections to various portions of the vehicle body frame, ensuring at least one ground wire remains connected even during an offset collision, and separate connections to the cab and frame to prevent disconnection and lightning damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single ground wire connection is used in the collision safety control device, then the device structure is simple, but the reliability of airbag deployment is compromised during offset collisions due to possible disconnection
Solution Approach 1:
The ground wiring is divided into multiple separate connection points (first ground wire to right side frame, second ground wire to left side frame, third ground wire to cab). By segmenting the ground connection into multiple independent paths, the system ensures that if one connection is damaged during offset collision, other connections remain intact to maintain system operation and airbag deployment capability.
Solution Approach 2:
The patent implements redundant ground wiring connections in advance before any collision occurs. Multiple ground wires are预先 connected to different parts of the vehicle frame and cab, creating a backup system that cushions against the potential failure of any single connection point during offset collisions or lightning strikes.
2Object-affected harmful factors
If the collision safety control device is connected to a single ground portion, then the wiring harness is simple, but the system is vulnerable to damage from lightning strikes and disconnection during offset collisions
Solution Approach 1:
The grounding system is segmented into multiple connection points distributed across different locations (right frame, left frame, cab). This segmentation isolates the impact of harmful factors like lightning strikes or collision damage to at most one connection point, while other segments continue to provide safe grounding paths for the collision safety control device.
Solution Approach 2:
Different ground wire connections are strategically positioned at different locations on the vehicle structure (right side frame, left side frame, cab). Each location has different exposure to harmful factors, and by distributing connections locally across these varied positions, the system ensures that local damage at one position does not compromise the entire grounding system.
Data Source
AI summary
Collision safety control device having a ground wire connected to a plurality of portions of a vehicle body frame, in which two of the plurality of portions may be mutually separated by more than a width of the frame and the ground wire may include a first portion connecting the collision safety control device to the cab and a second portion connecting the cab to the frame.