Profiled Bead Hole for Vehicle Glazing Water Evacuation
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Solution Overview
Problem
Existing vehicle glazing systems face challenges in securely attaching profiled beads to glazed elements with varying dimensions and curved edges, leading to difficulties in water evacuation and adhesion, particularly with laminated glazing.
Innovation Solution
Incorporating a profiled bead with a single inner wing featuring a hole that allows flexibility and water evacuation, enabling better adaptation to the glazed element's edge and secure adhesion using an adhesion strip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the inner wing is made relatively wide to ensure good adhesion and forceful clipping, then the adhesion strength and clipping force are improved, but the visibility of the inner wing from the outside increases and the adaptability to curved edges decreases
Solution Approach 1:
The profiled bead is divided into multiple wings (typically three wings) instead of a single wide inner wing. Each wing can independently adapt to the curved edge geometry while maintaining adequate adhesion area. This segmentation allows the bead to conform to varying edge radii without requiring an excessively wide single wing, thus resolving the contradiction between adhesion strength and adaptability to curved edges.
Solution Approach 2:
Different wings of the profiled bead have different functions and dimensions optimized for their specific roles. The inner wings are designed with appropriate width for adhesion, while outer wings provide structural support and clipping function. This local optimization allows each section to perform its function effectively without compromising overall adaptability to curved edges.
2Stability of the object's composition
If the profiled bead is made relatively rigid to ensure stable structure and strong clipping, then the structural stability and clipping strength are improved, but the difficulty to make the bead shape coincide with the bottom edge of the glazing increases
Solution Approach 1:
The profiled bead incorporates flexible elements or joints that allow it to dynamically adapt to the varying curvature of the glazing bottom edge during installation, while maintaining structural stability once positioned. The multi-wing design with appropriate thickness and material properties enables the bead to bend and conform to curved edges without compromising its clipping strength.
3Adaptability or versatility
If the bottom edge of the glazing has small radius of curvature in certain places, then the glazing design flexibility is improved, but the difficulty to make the profiled bead coincide with the edge increases and water evacuation becomes more difficult
Solution Approach 1:
The profiled bead is segmented into multiple wings that can independently conform to small radius curves in the glazing bottom edge. This segmentation allows the bead to adapt to complex edge geometries with varying curvatures without requiring a completely custom-designed bead for each glazing configuration, thus maintaining ease of manufacture while achieving design flexibility.
4Object-affected harmful factors
If water evacuation means are added to handle water stagnation in lower parts, then the water evacuation capability is improved, but the device complexity increases
Solution Approach 1:
The water evacuation function is merged into the existing profiled bead structure by incorporating drainage channels or holes within the bead itself, rather than adding separate evacuation components. This integration allows water to be evacuated through the bead structure while maintaining the simplicity of the overall device.
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 a reliable and compact clipping system that securely attaches to the glazed element while facilitating water evacuation, ensuring effective adhesion and reducing visibility of the inner wing.
Implementation Method 1
Said profiled bead is located against said edge of said glazed element and comprises, seen in cross section, an inner wing located below (directly under, or indirectly under and with the insertion of an adhesion strip formed by a layer of glue or a adhesive tape) of said inner face of said glazed element
Data Source
Figure 1~2
Figure 3~4
AI summary
The present invention relates to vehicle glazing (1) comprising a glazed element (2) having an exterior face (20), an edge face (21) and an interior face (22), said glazing (1) comprising, along at least part of a bottom edge, a profiled bead (6) comprising a groove (60) for the clip-fastening of a cover piece (7) onto said profiled bead (6), said profiled bead (6) comprising, when viewed in cross section, an interior flange (65) situated underneath said interior face (22) of said glazed element (2), characterized in that said interior flange (65) comprises, at least in a bottom part of said profiled bead (6), at least one hole (66) passing through said interior flange (65), said hole (66) preferably having a length of between 2.0 and 50.0 mm and a width (l66) of between 2.0 and 10.0 mm.