Pivoting A-pillar Gutter System for Aerodynamic Water Management
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Solution Overview
Problem
Existing gutter channels on vehicles disrupt the smooth exterior surface, reducing aerodynamics, even when not in use during rainy weather, as they are formed from static incongruities that catch and guide rainwater.
Innovation Solution
A pivoting gutter system housed in the A-pillar, with a cover and drive mechanism that moves between a stowed and deployed position to define a gutter shape for water collection and channeling, maintaining a flush exterior surface when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If static gutter channels are formed from incongruities in paneling, then rainwater can be caught and guided over the vehicle, but the exterior surface is disrupted and aerodynamics are reduced
Solution Approach 1:
The gutter channel is made movable rather than static, allowing it to pivot between a stowed position (maintaining smooth exterior surface) and a deployed position (catching rainwater). This dynamic configuration resolves the contradiction by adapting the gutter's shape based on weather conditions.
Solution Approach 2:
The A-pillar is divided into multiple segments including a movable gutter channel portion that can independently pivot relative to the fixed portions. This segmentation allows the gutter to be deployed only when needed without permanently disrupting the overall exterior surface geometry.
2Reliability
If gutter channels are permanently formed in the A-pillar, then rain protection is continuous, but aerodynamic performance is continuously degraded
Solution Approach 1:
The gutter channel pivots between stowed and deployed positions based on rain detection, providing rain protection only when needed. This dynamic operation maintains aerodynamic performance during normal driving while providing protection during rainy conditions.
Solution Approach 2:
The gutter channel is deployed periodically only during rainy weather conditions rather than remaining continuously deployed. This periodic action reduces aerodynamic drag during clear weather while providing protection when required.
3Shape
If a movable cover is added to create a pivoting gutter system, then aerodynamic surface is maintained when not in use, but device complexity increases
Solution Approach 1:
A movable cover is integrated into the A-pillar structure, allowing the gutter channel to pivot between stowed and deployed positions. This dynamic component maintains surface flushness when stowed while providing rain protection when deployed, accepting increased complexity as a trade-off for aerodynamic performance.
Data Source
AI summary
A vehicle includes a body including an A-pillar, and a windshield having an exterior surface and a lateral edge secured to the A-pillar. The A-pillar has a first part and a second part. The first part is positioned between the second part and the lateral edge of the windshield. The first part is movable relative to the second part from a stowed position wherein an outer surface of the first part is flush with an outer surface of the second part, and a deployed position wherein the outer surface of the first part extends obliquely relative to the outer surface of the second part such that in the deployed position the first part together with the second part define a gutter shaped to collect water flowing across the exterior surface of the windshield.