Cowl Side Reinforcement Structure for Vehicle Weight Reduction
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Solution Overview
Problem
Conventional cowl side reinforcement structures in vehicles require multiple reinforcement members, increasing production costs and vehicle weight, and often necessitate the use of structural adhesives where welding is impractical, extending cycle time.
Innovation Solution
A cowl side reinforcement structure comprising a front pillar outer upper reinforcement member, a hood hinge mounting reinforcement member, and a cowl side reinforcement member, forming a box-shaped cross-section with a welding gun passing hole, which reduces the number of reinforcement members and eliminates the need for structural adhesives by allowing welding through the reinforcement structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple reinforcement members are used in the cowl side, then the structural strength and impact resistance are improved, but the production cost and vehicle weight increase
Solution Approach 1:
The patent combines multiple reinforcement members into a single integrated reinforcement structure that performs the functions of multiple separate components. This unified structure maintains the necessary structural strength while reducing the total number of parts, thereby decreasing vehicle weight and production cost.
Solution Approach 2:
The reinforcement structure is designed to perform multiple functions simultaneously: it provides structural strengthening, serves as a welding support structure, enables proper welding gun access, and acts as an impact resistance component. This multi-functionality eliminates the need for separate dedicated components for each function.
2Strength
If multiple reinforcement members are used in the cowl side, then the structural strength is improved, but the production cost increases
Solution Approach 1:
By merging multiple reinforcement members into one integrated component, the patent reduces the number of parts that need to be manufactured, stored, and assembled. This consolidation simplifies the manufacturing process, reduces inventory requirements, and lowers production costs while maintaining structural integrity.
3Ease of manufacture
If structural adhesive is used where welding is impracticable, then the reinforcement can be installed, but the cycle time is extended
Solution Approach 1:
The reinforcement structure is designed in advance with predetermined welding access features and geometries that enable welding operations to be performed efficiently. This preliminary design consideration eliminates the need for alternative adhesive bonding methods, ensuring that welding can be completed quickly and efficiently during assembly.
4Weight of moving object
If the number of reinforcement members is minimized, then the vehicle weight and production cost are reduced, but the impact energy transmission and dispersion capability may be compromised
Solution Approach 1:
The reinforcement structure utilizes a composite design that integrates multiple functional elements into a unified structure. This composite approach allows the single reinforcement member to effectively transmit and disperse impact energy across multiple pathways, maintaining the reliability needed for front offset collision performance while minimizing weight.
Data Source
AI summary
A cowl side reinforcement structure of a vehicle includes a front pillar outer upper reinforcement member, a hood hinge mounting reinforcement member, and a cowl side reinforcement member. The front pillar outer upper reinforcement member forms a box-shaped cross-section with a cowl side, and forms a welding gun passing hole. The hood hinge mounting reinforcement member partially overlaps the front pillar outer upper reinforcement member. The cowl side reinforcement member is fixed to the hood hinge mounting reinforcement member, and includes a box-shaped body forming an internal space connected with the welding gun passing hole.