Garnish Panel Labyrinth Seal for Vehicle Wind Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automotive garnish panels create unpleasant wind noise due to high-speed airflow exiting through small gaps, causing pressure differences.
Innovation Solution
A labyrinth seal configuration is integrated into the garnish panel to direct airflow through a tortuous pathway, reducing exit speed and minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If air flows through a straight gap behind the garnish panel, then the airflow path is simple and manufacturing is easy, but wind noise is generated due to high-speed airflow exiting through the gap
Solution Approach 1:
The seal structure is segmented into multiple functional components: a main body portion, a forward flange, and an upper flange. This segmentation creates distinct zones for sealing and airflow control, allowing the labyrinthine pathway to be formed through the arrangement of separate elements rather than a single complex piece.
Solution Approach 2:
The forward flange and upper flange are positioned to create a nested, multi-layered sealing structure. The forward flange extends forward from the main body while the upper flange extends upward, creating overlapping sealing zones that form the labyrinthine pathway without requiring excessive structural complexity.
2Object-affected harmful factors
If a labyrinth seal is added to reduce wind noise, then noise is reduced by slowing airflow, but the seal structure becomes more complex
Solution Approach 1:
The labyrinthine pathway is formed using curved and angled surfaces rather than sharp直角 transitions. The forward flange and upper flange create smooth, tapered transitions that guide airflow through the labyrinthine path, reducing turbulence and noise while maintaining structural simplicity.
Solution Approach 2:
The seal structure utilizes three-dimensional spatial arrangement of the forward flange and upper flange to create the labyrinthine pathway. By extending flanges in different directions (forward and upward) from the main body, the patent creates a multi-dimensional airflow path that reduces noise without requiring additional complex components.
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
The labyrinth seal significantly reduces or eliminates wind noise by slowing down airflow exiting behind the garnish panel, enhancing vehicle cabin comfort.
Implementation Method 1
The disclosed seal arrangement includes a labyrinth path for air venting behind the garnish, which reduces the speeds of air exiting from behind the garnish to thereby eliminate or significantly reduce wind noise produced during vehicle travel.
Data Source
AI summary
A garnish seal for a vehicle includes an elongate main body configured to be mounted on an inner side of a garnish panel. The garnish seal further includes an elongate sealing element extending along the elongate main body and protruding in a direction away from the main body, the sealing element being configured to seal against a body of a vehicle on which the garnish panel is mounted. In addition, the seal includes a forward flange protruding away from a forward portion of the main body when the garnish seal is mounted on the vehicle and configured to seal against the body of the vehicle in a forward portion of the garnish panel; and an upper flange extending along a portion of a length of the main body substantially parallel to the sealing element, defining a channel between the upper flange and the sealing element.