Rail Vehicle Window Sliding Frame L-Shape Design
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Solution Overview
Problem
Current stowage-shaft windows in rail vehicles face safety issues due to the risk of the glass panel falling or tilting out of the sliding frame if adhesive bonding fails, and require complex welding and high manufacturing efforts, which can lead to injuries and increased costs.
Innovation Solution
A window arrangement with a sliding frame designed as an L-shaped metal sheet, where the window panel overlaps the window opening, providing dual security against falling or tilting, and using laser-cutting for manufacturing to reduce components and welding requirements, incorporating a spring mechanism or counterweight for stability, and integrating transportation locks for secure handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive bonding is used to secure the window panel to the sliding frame, then the window panel can be fixed in place, but the adhesive bonding may fail causing the glass panel to fall or tilt out of the sliding frame compromising safety
Solution Approach 1:
The patent applies beforehand cushioning by designing the sliding frame with an L-shaped metal sheet that creates a cavity to accommodate the window panel. This structural design provides a backup retention mechanism that prevents the window panel from falling or tilting out even if the adhesive bonding fails, thereby cushioning against the harmful effect of adhesive failure.
2Strength
If welding is used to form the sliding frame from extruded profiles, then the frame structure can be created, but high levels of skill are required and manufacturing complexity increases
Solution Approach 1:
The patent applies mechanics substitution by replacing the welding process with a laser-cutting process. Instead of welding extruded profiles to form the sliding frame, the invention uses laser cutting to create the frame structure directly, eliminating the need for welding skills and reducing manufacturing complexity while maintaining structural integrity.
3Stability of the object's composition
If the sliding frame is designed with a counterweight for stability, then the window can be balanced, but additional components are required that complicate transportation and storage
Solution Approach 1:
The patent applies merging by integrating the counterweight function directly into the sliding frame structure itself, rather than using a separate counterweight component. This is achieved by designing the sliding frame with an L-shaped metal sheet that creates an integrated balance mechanism, thereby reducing the number of separate components and simplifying transportation and storage.
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 window panel is securely positioned, reducing the importance of adhesive bonding for safety and lowering manufacturing complexity and costs, while ensuring the panel remains in place even if adhesive fails, and simplifying transportation and installation with integrated locks.
Implementation Method 1
In the region for accommodating the window panel, the sliding frame of a stowage-shaft window is designed in the form of an L-shaped metal sheet which is angled all the way around. The sliding frame thus forms a cavity on one side for accommodating the window panel.
Implementation Method 2
The sliding frame is cut to size using a laser.
Data Source
AI summary
A window arrangement for a rail vehicle includes a window pane disposed in a movable sliding frame and having at least one open position, a closed position and a transport position. The movable sliding frame is disposed in a window guiding frame, and the window pane has a larger surface than a corresponding window opening of the window guiding frame.