Integrated Vehicle Front Structure for Low-Part Aluminum Assembly
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Solution Overview
Problem
Existing vehicle body front structures face challenges in minimizing the number of parts, complexity in manufacturing, and high costs, particularly in small-volume production, while ensuring structural strength and simplicity in assembly.
Innovation Solution
A one-piece aluminum structure integrating a fender apron upper member, shock absorber housing, and front side member, formed through sand mold casting, with reinforced ribs and connections to enhance strength and reduce weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a typical monocoque front apron member structure is used, then the vehicle body can be assembled with multiple steel panels, but the number of parts increases to more than 70 panels requiring individual production and assembly, increasing mold cost and manufacturing complexity
Solution Approach 1:
The patent merges multiple separate steel panels (front apron member, shock absorber housing, reinforcement members) into a single integrated aluminum alloy die-cast part. This consolidation reduces the part count from over 70 individual panels to one monolithic structure, eliminating the need for multiple molds and assembly operations while maintaining all necessary structural functions.
2Device complexity
If an aluminum space frame structure is applied to reduce parts, then the layout of parts such as the shock absorber housing becomes complicated
Solution Approach 1:
The shock absorber housing is integrated directly into the front apron member structure as a built-in cavity rather than a separate component. This merging eliminates the need for separate shock absorber housing parts and simplifies the overall layout, as the housing space is naturally formed within the die-cast structure during manufacturing.
3Device complexity
If high-vacuum die-casting parts are applied to reduce parts count, then the investment cost becomes high
Solution Approach 1:
The patent changes the manufacturing process from high-vacuum die-casting to sand mold casting, adjusting the process parameters to suit small-volume production requirements. This parameter change reduces investment cost while still achieving the goal of producing integrated aluminum alloy parts with complex geometries, making the technology economically viable for low-volume vehicle production.
4Strength
If multiple steel panels are welded and joined in a monocoque method, then the basic strength of the vehicle body can be maintained, but the production cycle time increases due to complicated assembly processes
Solution Approach 1:
Multiple structural components that would require welding and joining operations are merged into a single die-cast aluminum alloy part. This eliminates all welding, bolting, and riveting operations between these components, drastically reducing assembly time and production cycle time while maintaining or enhancing structural strength through the inherent properties of the integrated design.
Data Source
AI summary
A front vehicle body structure includes a fender apron upper member, a shock absorber housing disposed under the fender apron upper member, and a front side member disposed under the shock absorber housing, and the fender apron upper member, the shock absorber housing and the front side member are integrally formed.