Cast Sealing Lip for Vehicle Window Corner
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sealing technologies for vehicle windows face issues with inconsistent sealing lip positions due to complex cutting and joining processes, leading to noise and aesthetic problems in corner areas, particularly in areas where extruded profile seals meet.
Innovation Solution
A sealing arrangement with a cast sealing lip designed over its entire arc-shaped extension, connected to extruded profile seals, ensuring a uniform coating and simplified manufacturing process, allowing for perpendicular trimming and improved alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If extruded profile seals are cut and joined in corner areas, then the sealing arrangement can be assembled from standard components, but the sealing lip position becomes inconsistent and appearance deteriorates
Solution Approach 1:
The patent merges multiple sealing lip functions into a single cast sealing component that spans the entire corner area. Instead of joining separate extruded profile seals at corners, the invention uses one monolithic cast piece that provides consistent sealing lip positioning throughout the corner region, eliminating assembly variability while maintaining manufacturing efficiency.
Solution Approach 2:
The patent employs composite construction by combining a cast sealing lip structure with integrated extruded profile seal sections. The cast portion provides precise corner sealing geometry while the extruded sections provide linear sealing functionality, creating a hybrid component that leverages the advantages of both manufacturing methods.
2Ease of operation
If extruded profile seals are bent in corner areas, then the profile seals can meet in the middle, but tolerances cause unsatisfactory appearance and sealing lip position varies
Solution Approach 1:
The invention combines the bending accommodation feature with a monolithic cast structure. The cast sealing lip is designed with built-in flexibility to accommodate building facade movements and installations variations, while maintaining consistent sealing lip positioning throughout the corner area, eliminating the tolerance issues associated with joining multiple bent profile seals.
3Productivity
If a cast mounting section is injection-molded onto profile seals, then the sealing arrangement can be produced efficiently, but proper fixing of profile seal ends in the mold is difficult and variations occur
Solution Approach 1:
The patent merges the mounting section and sealing lip into a single cast component. This eliminates the need for separate injection molding operations and the associated difficulties of fixing profile seal ends in molds. The monolithic construction ensures consistent sealing lip positioning while maintaining high production efficiency through direct casting processes.
4Ease of manufacture
If extruded profile seals are trimmed obliquely in bending areas, then the seals can be joined, but the trimming process becomes complex and time-consuming
Solution Approach 1:
The invention merges the sealing functions into a single cast component that eliminates the need for complex oblique trimming operations. The cast sealing lip is designed to accommodate corner geometries directly, removing the time-consuming precision cutting and joining steps while maintaining ease of assembly through standardized connection interfaces.
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 solution provides improved noise performance and appearance by maintaining consistent sealing lip positions and eliminating complex interfaces, enhancing variability and ease of manufacturing.
Implementation Method 1
a sealing section having a sealing lip which is elastically deflectable transversely to the sealing plane when the corner area of the window comes into contact with the sealing lip
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a sealing arrangement (30) for sealing a corner region (31) of a window (18) against a body part (16) of a motor vehicle (10). The sealing arrangement (30) defines a sealing plane (29) and a first sealing axis (24) and a second sealing axis (28) extending transversely to the first sealing axis. The sealing arrangement has a fastening section (36) for fastening to the body part (16) and a sealing section (34), which has a sealing lip (40) which can be elastically deflected transversely to the sealing plane (29) when the corner region (31) of the window (18) comes to bear against the sealing lip (40) and which extends in an arcuate manner from the first sealing axis (24) to the second sealing axis (28). The sealing lip (40) is in the form of a cast sealing lip (40) over the entire arcuate extension thereof.