Vehicle Cowl Cross Bar Bracket Design for HUD and Steering Support
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Solution Overview
Problem
Conventional cowl cross bars for vehicles face challenges in providing sufficient space for a head-up display and air duct passage while maintaining adequate stiffness to support the steering column, particularly under vertical and lateral vibrations.
Innovation Solution
A cowl cross bar design featuring a main bar with integrally formed first brackets for air duct mounting, a second bracket with an inverted 'U'-shaped cross-section for enhanced steering column support, and a third reinforcement bracket connected to both, providing additional stiffness through multiple point fixation and reinforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional cowl cross bar structure is used to support the steering column, then the steering column is supported, but sufficient space for head-up display mounting and air duct passage is not ensured
Solution Approach 1:
The cowl cross bar is divided into multiple functional segments: a main bar for structural support, first brackets for head-up display mounting, a second bracket for steering column support, and a third bracket for reinforcement. This segmentation allows each component to perform its specific function optimally while maintaining overall structural integrity and providing necessary mounting spaces.
Solution Approach 2:
The invention utilizes three-dimensional spatial arrangement by positioning brackets at different locations and orientations along the main bar. The first brackets extend upward to provide head-up display mounting space, while the second bracket extends downward for steering column support, effectively utilizing vertical dimension to resolve the space conflict.
2Area of stationary object
If the cowl cross bar structure is modified to provide space for head-up display and air duct passage, then mounting space is ensured, but stiffness to support steering column is reduced
Solution Approach 1:
Different parts of the cowl cross bar structure are designed with different structural characteristics optimized for their specific functions. The main bar has high stiffness for overall support, the first brackets are designed with appropriate thickness for head-up display mounting, and the second and third brackets are specifically configured to provide localized reinforcement where steering column support is needed, ensuring sufficient stiffness without compromising mounting space.
Solution Approach 2:
The cowl cross bar structure combines multiple bracket components made of appropriate materials to achieve both space provision and stiffness requirements. The integration of these different components creates a composite structure that balances the conflicting requirements of providing mounting space while maintaining structural strength.
3Strength
If reinforcement is added to the cowl cross bar to improve steering column support stiffness, then strength is improved, but device complexity increases
Solution Approach 1:
The third bracket for reinforcement is integrally formed with or closely coupled to the second bracket, merging the reinforcement function with the existing steering column support structure. This integration approach provides the necessary stiffness enhancement while minimizing the increase in overall structural complexity compared to adding completely separate reinforcement components.
Data Source
AI summary
A cowl cross bar is provided for a vehicle capable of easily ensuring a space in which a heads-up display device is disposed and a passage through which an air duct extends, and which exhibits improved self-supporting stiffness and sufficient stiffness to support a steering column. The cowl cross bar includes a main bar disposed in a lateral direction from a vehicle body, a pair of first brackets for supporting hardware, which is coupled to the main bar and extends forward therefrom, a second bracket for supporting a steering column, which is coupled to the main bar and extends forward therefrom, the second bracket being disposed between lower ends of the pair of first brackets for supporting hardware, and a third bracket for reinforcement, which is disposed between the pair of first brackets for supporting hardware and the second bracket for supporting the steering column and is connected thereto.