Sliding Laminated Glazing With Inner Glass Overhang
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Solution Overview
Problem
Existing vehicle glazing solutions face challenges in achieving a balance between maintaining bay dimensions, weight, and mechanical resistance, particularly when incorporating a laminated glazing with an overhang, which often results in increased weight and complex assembly processes.
Innovation Solution
A laminated window structure featuring a thin, chemically-calibrated interior glass sheet with an overhang, integrated with a plastic sheet and an exterior glass sheet, allowing for mobility and reduced weight, along with a protective layer to enhance mechanical resistance and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the inner glass sheet is made larger to maintain bay dimensions with an overhang, then the glazing can be properly held in place, but the weight of the glazing increases
Solution Approach 1:
The invention divides the glazing into three separate sheets (outer glass sheet, plastic sheet, inner glass sheet) with the inner glass sheet having an overhang. This segmentation allows each sheet to be optimized independently - the inner glass sheet can extend beyond the others to provide structural support and maintain bay dimensions without requiring the outer glass sheet to be equally large, thus controlling overall weight while maintaining stability.
Solution Approach 2:
The inner glass sheet is designed with non-uniform dimensions, extending beyond the outer glass sheet and plastic sheet only in specific areas (creating an overhang). This local extension provides the necessary structural support and guidance where needed, while minimizing the overall glass area and weight. The overhang is strategically positioned to engage with the door structure for support during movement.
2Ease of manufacture
If the outer glass sheet is made smaller to accommodate an overhang design, then the inner glass sheet can extend beyond, but the overall appearance of the vehicle is altered
Solution Approach 1:
The invention employs asymmetric design where the inner glass sheet has different dimensions than the outer glass sheet and plastic sheet, creating an overhang. The outer glass sheet and plastic sheet are sized to match the visible opening dimensions, maintaining symmetric appearance from the outside, while the inner glass sheet extends asymmetrically beyond them to provide structural support without affecting the vehicle's external appearance.
3Stability of the object's composition
If a laminated glazing with overhang is implemented, then the glazing can be held in place without altering bay dimensions, but more glass is needed making the glazing heavier
Solution Approach 1:
The laminated glazing is segmented into three sheets with the inner glass sheet providing the overhang function. This allows the outer glass sheet and plastic sheet to be sized exactly to the opening dimensions, while the inner glass sheet extends beyond to provide support. The segmentation enables weight optimization by concentrating the extra glass material only where structurally necessary rather than increasing the size of all sheets.
Solution Approach 2:
The inner glass sheet is designed with local quality variations, extending beyond the other sheets only in the area needed for structural support and guidance. This localized extension maintains bay dimensions without requiring a proportional increase in the size of the entire glazing assembly, thus controlling weight while maintaining the necessary structural properties.
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 lightweight, robust, and easy-to-implement glazing system that maintains bay dimensions without increasing weight, while ensuring efficient mobility and protection, suitable for various door configurations.
Implementation Method 1
the inner glass sheet is a chemically tempered glass sheet with a thickness of between 0.40 and 2.10 mm
Implementation Method 2
Said pane is curved and laminated and comprises at least one outer sheet of glass, one inner sheet of glass, and a sheet of plastic material situated between said outer sheet of glass and said inner sheet of glass
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a glazing of a vehicle, comprising a pane (2) and means for allowing the movement of said pane (2) in translation in relation to a door of said vehicle, said pane (2) being convex and laminated and comprising at least one outer sheet of glass (3), an inner sheet of glass (5), and a sheet of plastic material (4) arranged between said outer sheet of glass (3) and said inner sheet of glass (5), each sheet (3, 4, 5) having a peripheral edge (31, 41, 51). The invention is characterised in that said inner sheet of glass (5) is a sheet of glass that has been subjected to a chemical tempering process and has a thickness (e5) of between 0.40 and 2.10 mm, or even between 0.40 and 1.80 mm or even between 0.40 and 1.60 mm, and in that the edge (51) of said inner sheet of glass (5) is located beyond the edge (41) of said sheet of plastic material (4) and the edge (31) of said outer sheet of glass (3), over at least part of the length of the edge (51) of said inner sheet of glass (5).