Vehicle Door Structure with Large Window and Adhesive Frame
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Solution Overview
Problem
Existing vehicle doors used in earth moving, construction, and mining applications have a small window size, limiting visibility for operators while failing to provide sufficient structural strength and weight efficiency.
Innovation Solution
A door design featuring a large visual surface area window (65% to 95% of the door area) with a cavity-defined outer panel and an inner panel joined by adhesive couplings, enhancing structural integrity through a tapered configuration and adhesive bonding, which increases the door's ability to absorb and dissipate forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the window area is increased to improve visibility, then the door frame area decreases reducing structural strength
Solution Approach 1:
The door frame is divided into outer and inner panels that are coupled together at multiple locations (front and rear), creating a segmented structure that can span larger openings while maintaining strength through distributed support elements
Solution Approach 2:
The door frame uses composite construction with outer and inner panels joined by coupling elements, creating a composite structure that achieves both large span capability and high structural strength without requiring a solid frame
2Strength
If the door frame area is increased to absorb and dissipate forces, then the window area decreases reducing visibility
Solution Approach 1:
The door frame is segmented into outer and inner panels with multiple coupling points, distributing force absorption across several locations rather than requiring a large continuous frame area
Solution Approach 2:
The door frame transitions from a two-dimensional planar structure to a three-dimensional configuration with front and rear couplings and spaced panels, absorbing forces in multiple dimensions while maintaining a compact footprint that allows large window area
3Illumination intensity
If a large window area is used to improve visibility, then the door weight increases
Solution Approach 1:
The door frame uses thin-walled outer and inner panels that provide structural function with minimal material, reducing weight while maintaining strength to support large window areas
Solution Approach 2:
The composite panel structure distributes loads efficiently, allowing the use of lighter materials and thinner sections that would not be sufficient in a solid frame design, thereby reducing overall door weight
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 design provides improved visibility and structural strength without significantly increasing the vehicle's weight, effectively addressing the limitations of prior art by enhancing the door's ability to withstand operational stresses.
Implementation Method 1
an adhesive disposed between the outer panel and the inner panel at the inner coupling
Data Source
AI summary
A door and method for assembling such door for a vehicle are disclosed. The door may comprise a window having a visual surface area and a frame. The frame may include an outer panel surrounding the window and defining a cavity having a draw depth and a mouth, and an inner panel having a first end and a second end. The inner panel may be joined to the outer panel at an inner coupling disposed at the first end and joined to the outer panel at an outer coupling disposed at the second end of the inner panel. The inner panel may substantially cover the mouth of the cavity. The door may have a door area. The visual surface area of the window may be in the range of about 65 percent to 95 percent of the door area.