Multi-Material Grounding Device for Vehicle Frames
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Solution Overview
Problem
Existing grounding elements lack versatility to effectively attach to different materials used in constructing lighter and more fuel-efficient vehicles, necessitating new types of grounding devices that can accommodate various vehicle materials.
Innovation Solution
A multi-element grounding device comprising two metals, such as aluminum and steel, with a fastening portion and additional features like channels, sloped portions, sealing portions, and welding projections, designed to securely attach to vehicle frames using fasteners and welding methods, ensuring effective electrical grounding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-material grounding element is used, then the manufacturing process is simple, but the adaptability to different vehicle materials (aluminum, steel, etc.) is poor
Solution Approach 1:
The grounding element is constructed as a composite structure with a first portion (aluminum) and a second portion (steel), allowing it to adapt to different vehicle frame materials. The aluminum portion can bond to aluminum frames while the steel portion can bond to steel frames, providing versatility without requiring multiple different grounding elements.
Solution Approach 2:
The grounding element is designed to perform multiple functions by incorporating different metal portions that can interface with different vehicle materials. This multi-functional design allows a single grounding element to replace what would traditionally require multiple specialized elements for different material types.
2Adaptability or versatility
If a multi-material grounding element is used, then the adaptability to different vehicle materials improves, but the manufacturing complexity increases
Solution Approach 1:
The grounding element combines aluminum and steel portions into a single integrated component that can be manufactured as one piece or pre-assembled unit. This merging approach simplifies the overall manufacturing process compared to creating and assembling multiple separate grounding elements for different materials.
Solution Approach 2:
By using composite construction with aluminum and steel portions, the element achieves adaptability to different vehicle materials while maintaining a streamlined manufacturing process. The different metal portions can be joined through various methods (welding, mechanical fastening) that are well-established in automotive manufacturing.
3Adaptability or versatility
If the grounding element uses dissimilar metals, then the versatility to attach to different vehicle materials is enhanced, but galvanic corrosion risk increases
Solution Approach 1:
The grounding element applies different materials (aluminum and steel) to specific locations based on the required function. The aluminum portion interfaces with aluminum vehicle parts while the steel portion interfaces with steel parts, minimizing galvanic corrosion by reducing direct contact between dissimilar metals and the vehicle frame.
Data Source
AI summary
A grounding element is provided. The grounding element includes a first portion including a first metal; a second portion including a second metal other than the first metal; and a fastening portion configured to receive a fastener to attach the grounding element to a body. The grounding element may be welded to a body of a vehicle and used to ground a vehicle electrical system.