Train Side Glazing Recessed Lamination for Emergency Breakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multiple glazing systems for transport, such as trains, with openable windows lack safety features, as they do not easily break to facilitate emergency evacuation without compromising the integrity of the glazing structure and window.
Innovation Solution
A glazing system with a reinforcing lamination of glass and plastic sheets positioned under the window, not in contact with the glazing frame, allowing for easy breakage under the window to enable emergency evacuation while preserving the window and surrounding glazing integrity, with the lamination set back by 2-5 mm from the frame to maintain structural integrity and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reinforcing laminate is added to the glazing substrate to improve safety and impact resistance, then the glazing becomes more impact-resistant and safer, but the glazing structure becomes more complex and the laminate contacts the peripheral frame structure which may hinder emergency evacuation
Solution Approach 1:
The glazing is divided into two distinct zones: a first zone containing the operable window with full peripheral support, and a second zone below the window with a recessed laminate that does not contact the frame. This segmentation allows different parts of the glazing to have different safety and evacuation characteristics.
Solution Approach 2:
The reinforcing laminate is positioned differently in different regions: in the first zone it provides full reinforcement, while in the second zone it is recessed from the peripheral structure to allow easy breakage for evacuation. This local differentiation resolves the contradiction between overall safety and emergency evacuation capability.
2Reliability
If the reinforcing laminate extends all around the window structure to maximize safety, then the glazing is more impact-resistant throughout, but the structure below the window becomes too strong to break easily for emergency evacuation
Solution Approach 1:
The glazing is divided into two distinct zones: a first zone containing the operable window with full peripheral support, and a second zone below the window with a recessed laminate that does not contact the frame. This segmentation allows different parts of the glazing to have different safety and evacuation characteristics.
Solution Approach 2:
The reinforcing laminate is positioned differently in different regions: in the first zone it provides full reinforcement, while in the second zone it is recessed from the peripheral structure to allow easy breakage for evacuation. This local differentiation resolves the contradiction between overall safety and emergency evacuation capability.
3Ease of operation
If the laminate is recessed from the peripheral frame structure to facilitate breakage and evacuation, then emergency evacuation is enabled, but the overall structural integrity and thermal insulation capacity of the glazing is reduced
Solution Approach 1:
The glazing is divided into two distinct zones: a first zone containing the operable window with full peripheral support, and a second zone below the window with a recessed laminate that does not contact the frame. This segmentation allows different parts of the glazing to have different safety and evacuation characteristics.
Solution Approach 2:
The reinforcing laminate is positioned differently in different regions: in the first zone it provides full reinforcement, while in the second zone it is recessed from the peripheral structure to allow easy breakage for evacuation. This local differentiation resolves the contradiction between overall safety and emergency evacuation capability.
4Strength
If the laminate contacts the glazing frame structure to maintain structural integrity, then the glazing remains strong and stable, but the window structure and frame obstruct the evacuation path in case of emergency
Solution Approach 1:
The glazing is divided into two distinct zones: a first zone containing the operable window with full peripheral support, and a second zone below the window with a recessed laminate that does not contact the frame. This segmentation allows different parts of the glazing to have different safety and evacuation characteristics.
Solution Approach 2:
The reinforcing laminate is positioned differently in different regions: in the first zone it provides full reinforcement, while in the second zone it is recessed from the peripheral structure to allow easy breakage for evacuation. This local differentiation resolves the contradiction between overall safety and emergency evacuation capability.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a side glazing (1) of a transport means, in particular glazing for a train, said glazing being a fixed multiple glazing, having an openable window (2), said glazing comprising at least one intermediate substrate face (12, 22) that comprises, in a part of the glazing located under said window, a main glass sheet (15), and a main sheet of plastic material (16) that is located in contact between the intermediate face (12, 22) and the main glass sheet (15), without the main glass sheet and the main sheet of plastic material being in contact with said glazing frame structure (3).