Vehicle Trim Structure with Dual Surface Regions
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Solution Overview
Problem
Existing trim structures for vehicles with multiple surface appearances are challenging to manufacture due to tolerance issues and material property differences, particularly when combining separate units with different thermal expansion coefficients, and achieving curved shapes with mixed materials is difficult.
Innovation Solution
A trim structure is manufactured in a single unit with multiple surface regions, each having distinct appearances, such as color or reflectance, using methods like extrusion, pressing, and surface treatments like painting or anodizing, with integrated end caps to simplify assembly and reduce the risk of parts falling off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If two separate units with different surface appearances are combined to form a trim structure, then different surface appearances can be achieved, but tolerance problems and assembly complexity arise
Solution Approach 1:
The patent merges two separate units with different surface appearances into a single integrated trim structure. The first unit with a first surface appearance and the second unit with a second surface appearance are combined into one piece, eliminating the need for separate assembly operations and reducing tolerance accumulation between parts.
Solution Approach 2:
The patent applies different surface appearances to different regions of the same trim structure. The first region has a first surface appearance while the second region has a second surface appearance, allowing local differentiation without requiring separate components for each surface type.
2Ease of manufacture
If two units with different material properties are combined, then different surface appearances can be achieved, but thermal expansion differences cause assembly problems
Solution Approach 1:
The patent achieves different surface appearances in different regions of the same trim structure without using materials with different thermal expansion coefficients. The uniform material composition throughout the structure ensures consistent thermal behavior while still providing visual differentiation through surface treatment variations.
3Ease of manufacture
If separate units are used to create curved trim structures, then different surface appearances can be achieved, but interspaces appear between units when bent
Solution Approach 1:
The patent combines multiple units into a single integrated trim structure that can be bent into curved shapes without creating interspaces. The monolithic construction allows uniform deformation across the entire structure, maintaining tight fits against vehicle structures while preserving different surface appearances in different regions.
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 approach simplifies manufacturing, allows for easier curvature and reduces assembly steps, while maintaining the desired surface appearances and structural integrity, eliminating the risk of interspaces and thermal expansion issues associated with separate units.
Implementation Method 1
A suitable material for the trim structure is a metal or alloy, e.g., aluminum. The trim structure may for example be manufactured by extrusion or pressing.
Implementation Method 2
surface treatments like painting or anodizing
Data Source
AI summary
A trim structure for a vehicle includes at least two surface regions having different surface appearances and is manufactured in one unit. A method for providing a trim structure for a vehicle with at least two surface regions having different surface appearances comprises the steps of: a) providing a first surface appearance on at least a portion of an external surface of a trim structure body; b) providing a second surface appearance by applying a material layer on top of at least a part of the at least a portion having the first surface appearance; and c) removing a portion of the applied material layer, thereby revealing at least a portion of the under-lying first surface appearance.