Ramped Scuff Plate Redirects Cargo on Sloped Vehicle Floors
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Solution Overview
Problem
Cargo items in vehicles, such as sport utility vehicles, tend to roll and accelerate out of the open liftgate or access door due to the slope of the cargo-area floor panel, leading to potential damage and frustration, as conventional cargo nets are insufficient in retaining small to medium-sized objects.
Innovation Solution
A ramped scuff plate is positioned between the cargo-area floor panel and the liftgate, featuring a sloped front side that contacts the cargo-area floor panel, a top side that defines the upper extreme, and a rear side that defines the rearwardmost portion, with specific dimensions and angles to redirect and retain cargo items, preventing them from rolling out when the liftgate is opened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cargo-area floor panel has a downward slope toward the liftgate, then cargo loading and unloading is facilitated, but cargo items roll and accelerate out of the open liftgate
Solution Approach 1:
The scuff plate serves as an intermediary element positioned between the sloped cargo-area floor panel and the liftgate. It provides a ramped surface with upward slope that counteracts the downward slope of the floor panel, creating a transition zone that redirects cargo items back toward the cargo area while maintaining the original beneficial downward slope for loading operations.
Solution Approach 2:
The scuff plate is positioned in advance of the liftgate opening to prevent cargo items from reaching the dangerous zone near the gate. By creating an upward-ramped barrier before cargo can accelerate out, it applies preliminary counter-action to the rolling motion caused by the downward slope, stopping items before they can exit the vehicle.
2Object-affected harmful factors
If a flat scuff plate is used, then it provides a barrier near the liftgate, but it does not effectively redirect cargo items with momentum toward the cargo area
Solution Approach 1:
The scuff plate changes the slope parameter from flat (0 degrees) to ramped (positive angle upward toward liftgate). This parameter change transforms the scuff plate from a simple barrier that blocks cargo into an active redirector that uses its upward ramp angle to push cargo items back toward the cargo area, effectively addressing items with momentum.
3Object-affected harmful factors
If the scuff plate has a high ramp angle, then it effectively redirects cargo items, but it increases the height and may interfere with liftgate operation
Solution Approach 1:
The scuff plate provides partial action by creating a moderate ramp angle that is sufficient to redirect cargo items without being excessive. This partial ramp angle (enough to redirect but not too steep) achieves effective cargo redirection while maintaining a compact height that avoids interfering with liftgate operation and cargo loading activities.
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 scuff plate effectively reduces the momentum of cargo items, preventing them from exiting the vehicle by ensuring they roll down the sloped front side and remain within the cargo area, even on inclined surfaces, thereby enhancing cargo retention and minimizing damage.
Implementation Method 1
The sloped front side has a ramp angle that is at least equal to the slope angle in an upward direction
Data Source
AI summary
A scuff plate for a vehicle includes a sloped front side in physical contact with a cargo-area floor panel. The cargo-area floor panel can have a slope angle greater than zero in a downward direction and the sloped front side can have a ramp angle at least equal to the slope angle in an upward direction.