Cowl Top Garnish Drain Rib Water Splash Prevention
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Solution Overview
Problem
Existing vehicle body structures fail to prevent water from splashing onto functional components located below drains due to low water flow speeds, leading to wetting issues.
Innovation Solution
A vehicle body structure featuring a cowl top garnish with a drain recessed along the vehicle width direction, an open end, and a drain rib extending from the open end in rear and lower directions, which guides and drains water away from functional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drain is open at the end portion without forming a side wall, then water storage in the drain is prevented and water can drain freely, but water drops fall immediately below the end portion and splash to wet functional components when water flow speed is low
Solution Approach 1:
The patent introduces a guide structure (intermediary element) between the open drain and the functional component below. This guide structure redirects the water flow path, serving as a mediator that prevents water drops from falling directly onto sensitive components while maintaining the open-drain configuration for effective water drainage.
Solution Approach 2:
The patent extends the side portion of the cowl top garnish downward to create a vertical barrier structure. By adding this vertical dimension element, the open end of the drain is partially enclosed, preventing water from splashing horizontally onto functional components below while still allowing water to drain freely from the open end.
2Object-affected harmful factors
If the drain is enclosed with side walls, then water flow is controlled and splashing is prevented, but water can be excessively stored in the drain and may flow to unexpected locations
Solution Approach 1:
The patent applies the side wall enclosure only at specific locations where water splashing would affect functional components, rather than enclosing the entire drain. This localized approach prevents water splashing in critical areas while maintaining open drainage in other areas, avoiding excessive water storage.
Solution Approach 2:
The patent uses a partial enclosure approach with the side portion extending downward, providing just enough protection to prevent water splashing onto functional components without fully enclosing the drain. This partial action is sufficient to solve the splashing problem while maintaining effective drainage functionality.
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
Effectively prevents water from splashing onto functional components by directing water flow away from sensitive areas, ensuring they remain dry.
Implementation Method 1
a drain rib extending from the open end in rear and lower directions of the vehicle body
Data Source
AI summary
A vehicle body structure comprising a cowl top garnish arranged along a windshield, wherein the cowl top garnish comprises an upper portion extending along the windshield, a side portion extending downward from an end portion of the upper portion in a vehicle width direction, and a drain recessed downward along an end portion of the upper portion on a front side of a vehicle body and extending in the vehicle width direction, the drain comprises an open end at an end portion in the vehicle width direction, and the side portion comprises a drain rib extending from the open end in rear and lower directions of the vehicle body.