School Bus Window Assembly Modular Design
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Solution Overview
Problem
School bus window assemblies are labor-intensive to assemble and install, and they often experience leakage due to the complexity of multiple components and installation processes.
Innovation Solution
A modular window assembly design featuring a frame with a fixed window panel and a movable panel that slides along channel members, secured with a resilient seal to reduce air and water leakage, allowing for exterior installation on the school bus, thereby simplifying the installation process and reducing the number of components and fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple components and fasteners are used to assemble the window frame, then the structural strength is improved, but the assembly complexity and labor intensity increase
Solution Approach 1:
The patent combines multiple frame members into a single extruded frame structure with integrated channels. The frame includes side channels and end channels that are formed as one piece through extrusion, eliminating the need for separate fasteners and multiple assembly steps while maintaining structural integrity through the integrated design.
2Reliability
If multiple components and complex assembly processes are used, then the window assembly can be securely attached, but the installation time and labor cost increase
Solution Approach 1:
The window frame is pre-assembled as a complete unit at the factory with all channels and seals integrated. This preliminary assembly allows the entire frame to be installed as one piece on the bus, significantly reducing installation time while ensuring proper alignment and secure attachment through the pre-configured mounting holes and integrated seal system.
3Object-affected harmful factors
If traditional sealing methods with multiple seals or beads are used, then water intrusion is reduced, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent uses a continuous flexible seal member that extends along the interior surfaces of the channels to contact and seal against the window pane edges. This single continuous seal replaces traditional multiple seals or beads, providing effective water intrusion protection while simplifying the manufacturing process and reducing component count.
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 modular design provides a flush exterior appearance, reduces leakage, and simplifies the installation process by allowing exterior attachment, resulting in improved performance and lower costs compared to conventional window assemblies.
Implementation Method 1
A resilient seal is included along the channel members to reduce air and/or water leakage between the window panel and the frame
Implementation Method 2
A sliding resilient seal may be bonded or adhered or secured to the interior surface of the fixed window panel and at a perimeter region of the fixed window panel that is at or near the opening defined by the perimeter panel for slidably engaging the exterior surface of the movable window panel as the movable window panel is opened and closed
Data Source
AI summary
A window module for a school bus includes a frame, a fixed window panel affixed to a portion of the frame, a perimeter panel secured to another portion of the frame and defining an opening at the other portion of the frame, and a movable window panel. The movable window panel is slidably positioned at the frame and movable along channel members and interiorly of the fixed window panel when opened and interiorly of and generally at the perimeter panel when at least partially closed. The exterior surfaces of the fixed window panel and of the perimeter panel may form a generally flush surface at an exterior of the school bus when the window assembly is installed at the school bus.