Commercial Vehicle Outer Frame Profile With Local Wall Thickening
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Solution Overview
Problem
Commercial vehicle outer frames require special designs to maintain dimensional stability under varying stresses, and existing frames with uniform wall thicknesses deform under tensile loads due to insufficient thickness in stressed areas.
Innovation Solution
An outer frame profile composed of at least three profile parts with varying wall thicknesses, where the first profile part forms the outside and is reinforced by additional profile parts in stressed areas, doubling the wall thickness in sections to enhance structural stability and prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the outer frame profile uses a uniform wall thickness throughout, then the manufacturing process is simple and cost-effective, but the frame deforms under tensile loads in stressed areas
Solution Approach 1:
The frame profile employs different wall thicknesses in different sections: thicker walls in highly stressed areas (front and rear frame sections) and thinner walls in less stressed areas (middle section). This local differentiation optimizes strength where needed while reducing unnecessary material and complexity elsewhere, directly resolving the contradiction between strength and device complexity.
2Stability of the object's composition
If the outer frame profile has sufficient wall thickness in all areas, then dimensional stability is maintained under all stresses, but the weight and material consumption increase
Solution Approach 1:
The profile applies varying wall thicknesses locally: thicker sections (e.g., 3-5mm) in high-stress areas and thinner sections (e.g., 1.5-3mm) in low-stress areas. This ensures dimensional stability is maintained only where structurally necessary, reducing overall material consumption while preserving stability under stress.
Solution Approach 2:
The frame profile is divided into multiple sections (front frame section, middle section, rear frame section) with distinct wall thickness characteristics. This segmentation allows each section to be optimized independently for its specific structural requirements, preventing unnecessary material usage in areas that don't require high thickness.
3Adaptability or versatility
If the outer frame uses a single profile design, then it can accommodate various body configurations, but it cannot provide optimized structural support for different stress patterns
Solution Approach 1:
The frame profile with varying wall thicknesses serves multiple functions: it provides optimized structural support for different body types (box bodies, curtain-sided bodies), accommodates various mounting heights for components, and maintains compatibility with different chassis configurations. This multi-functionality achieves adaptability without sacrificing structural integrity.
Solution Approach 2:
The differentiated wall thickness design allows the same profile to be adapted to various body configurations while providing locally optimized structural support. The thicker sections ensure reliability under varying stress patterns regardless of body type, while the overall profile design remains universally applicable.
Data Source
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AI summary
The present invention relates to an outer frame profile (1) for an outer frame for a commercial vehicle, in particular for a chassis of a commercial vehicle, which is formed from at least one frame profile (10) made of at least three profile parts (11, 12, 13) with the same or different wall thickness, with a first profile part (11) which forms at least partially the outside of the outer frame profile (1), with at least one front frame section (20) and at least one rear frame section (30), wherein a second profile part (12) with a low height abuts the first profile part (11) at least partially on the front frame section (20), and wherein a third profile part (13) with a higher overall height than the second profile part (12) abuts the first profile part (11) at least partially on the rear frame section (30) such that different underbody heights are formed in the longitudinal extension of the frame profile (10).The invention essentially provides that in the sections where the second profile part (12) and the third profile part (13) abut the first profile part (11), the wall thickness of the first profile part (11) is added to the wall thickness of the second profile part (12) and/or the wall thickness of the third profile part (13).