Vehicle Front Pillar Clip Garnish Attachment
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Solution Overview
Problem
Existing vehicle body front structures face limitations in reducing the width of the front pillar for improved driver vision and securing sufficient fixing strength of the garnish, which hampers design freedom and manufacturing costs.
Innovation Solution
A vehicle body front structure design featuring a front pillar with a clip section and a garnish having an engaging section that stands up towards the pillar, allowing for a reduced pillar width and enhanced fixing strength, along with a V-shaped cross-section for easier manufacturing and attachment, utilizing different materials for the inner and outer parts to improve rigidity and design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the front pillar is reduced in size to improve driver field of vision, then the field of vision is improved, but the fixing strength of the garnish becomes insufficient
Solution Approach 1:
The front pillar is divided into an inner pillar and an outer pillar, creating a hollow cross-sectional structure. This segmentation reduces the material usage and pillar width while maintaining structural strength through the hollow configuration, allowing the garnish to be properly fixed despite the reduced overall pillar size.
Solution Approach 2:
The inner pillar is positioned within the outer pillar, creating a nested structure. This nesting arrangement provides internal support while reducing the external dimensions of the front pillar, enabling both reduced pillar width for better visibility and sufficient fixing strength for the garnish.
2Ease of manufacture
If the garnish is attached to glass through module forming to reduce manufacturing costs, then manufacturing cost is reduced, but the fixing strength becomes insufficient
Solution Approach 1:
The garnish attachment structure is merged with the front pillar assembly rather than being separately formed on the glass. The engaging section of the garnish directly engages with the front pillar structure, providing sufficient fixing strength while maintaining ease of manufacture through integrated design.
3Strength
If a hollow cross section is formed in the front pillar to increase strength, then the strength is increased, but the pillar width cannot be further reduced
Solution Approach 1:
The front pillar is segmented into inner and outer pillars with a hollow cross-section, optimizing the balance between strength and width. The hollow structure provides structural rigidity while minimizing the external width of the pillar.
Solution Approach 2:
The front pillar uses a composite structure with inner and outer pillar members, potentially using different materials or material configurations to achieve high strength-to-width ratio, allowing both increased strength and reduced width.
Data Source
AI summary
A vehicle body front structure includes a front pillar extending in an upward/downward direction, a front glass disposed further inward in a vehicle width direction of a vehicle body than the front pillar, a subsidiary glass disposed further outward in the vehicle width direction than the front glass, and a garnish configured to cover a gap provided between end portions of the front glass and the subsidiary glass, and to cover the front pillar from an outside of a passenger compartment. The garnish has an engaging section disposed in the gap between the end portions of the front glass and the subsidiary glass and standing up toward the front pillar, and the front pillar has a clip section to which the engaging section is able to engage.