Aluminum Fender Bracket Composite Assembly
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Solution Overview
Problem
Existing methods for mounting vehicle fenders lack an efficient and cost-effective way to distribute stress and provide structural support, particularly in vehicles with wider track tires, as they often rely on welding dissimilar materials or hollow die-casting, which are not feasible or effective.
Innovation Solution
A load-bearing metallic tubular structure is created by coupling a cast aluminum bracket casting with a stamped aluminum backing plate using adhesive and machine screws, forming a strong yet lightweight assembly that distributes stress effectively and accommodates fender geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding dissimilar materials is used to mount fenders, then structural strength is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The fender mounting system is divided into separate components: a fender bracket casting and a backing plate, which are joined by adhesive and fasteners rather than welding. This segmentation allows each component to be manufactured independently from suitable materials, avoiding the complexity of welding dissimilar materials while maintaining structural strength through the composite assembly.
Solution Approach 2:
An adhesive layer acts as an intermediary between the fender bracket casting and the backing plate, creating a strong bond without requiring welding. This adhesive mediator enables the joining of dissimilar materials (aluminum casting and stamped metal plate) in a manner that is simpler and more cost-effective than traditional welding processes.
2Weight of moving object
If hollow die-casting is used for fender mounting, then weight is reduced, but structural support and stress distribution are insufficient
Solution Approach 1:
The fender mounting system uses a composite construction combining a fender bracket casting (providing structural support and stress distribution) with a backing plate (providing additional strength and mounting surface). This composite approach maintains the weight advantages of die-casting while significantly improving structural support capabilities through the combined materials and their synergistic properties.
Solution Approach 2:
The fender bracket casting and backing plate are merged into a single integrated assembly through adhesive bonding and fastener attachment. This merging creates a unified structural element that combines the weight efficiency of the casting with the structural strength of the composite construction, providing both lightweight design and robust structural support.
3Device complexity
If adhesive and machine screws are used to couple members, then manufacturing cost and complexity are reduced, but joint strength must be sufficient to bear load
Solution Approach 1:
The fender bracket casting is designed with pre-formed mounting features including threaded holes and adhesive bonding surfaces that are prepared in advance during manufacturing. This preliminary preparation ensures that when the backing plate is assembled, the joint strength is optimized without requiring complex assembly procedures, as the mounting features are already in place to receive the fasteners and adhesive.
Solution Approach 2:
The joint between the fender bracket casting and backing plate is created using a composite bonding method combining adhesive and mechanical fasteners. This composite joining approach provides sufficient joint strength to bear operational loads while maintaining manufacturing simplicity, as the adhesive creates a continuous bond and the fasteners provide mechanical anchoring and load distribution.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the structural support and strength of the fender mounting system while minimizing weight and tooling costs, allowing for effective use with both standard and wider track tires without the limitations of welding dissimilar materials or hollow die-casting.
Implementation Method 1
coupling a cast aluminum bracket casting with a stamped aluminum backing plate using adhesive and machine screws
Data Source
AI summary
A vehicle structural support is disclosed having first and second metallic members. A first metallic member has first and second sides, where the second side has a reduced thickness section. A second metallic member is coupled to a first side of the first metallic member. A third member is coupled to the first metallic member and positioned in the reduced thickness section. The second metallic member extends beyond the reduced thickness section to at least partially overlap the third member. The third member may be a fender for a vehicle.