Ramp Assembly Extension Section Pivoting Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Portable ramp assemblies often have incompatible transition surfaces with upper elevation surfaces, such as vehicle hatches or truck beds, and require disassembly of extension plates to switch between stowed and extended orientations, leading to user hassle and potential damage.
Innovation Solution
A ramp assembly with a pivotally coupled extension section that moves between stowed and extended orientations using an arcuate track, allowing for a flush transition surface and minimizing interference with vehicle parts, while remaining integrated and preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a ramp extension plate is used to bridge the gap between the ramp platform and the upper elevation surface, then the transition surface compatibility is improved, but the device complexity increases and requires disassembly/reassembly operations
Solution Approach 1:
The extension section is integrated with the ramp platform to form a single unified structure, eliminating the need for separate extension plates that require disassembly and reassembly. The extension section includes a transition surface that is continuously coupled to the ramp platform, providing seamless compatibility with upper elevation surfaces while reducing device complexity.
Solution Approach 2:
The extension section serves multiple functions: it extends the ramp length to reach upper elevation surfaces, provides a compatible transition surface for various vehicle types (cars, SUVs, trucks), and maintains structural integrity during both extended and stowed orientations. This multi-functional design eliminates the need for different components for different vehicle types.
2Volume of moving object
If the ramp assembly is designed for compact stowed orientation, then the storage space efficiency is improved, but the transition surface compatibility with upper elevation surfaces deteriorates
Solution Approach 1:
The extension section is designed to be movable between different orientations. When the ramp is in the extended orientation, the extension section extends outward to provide compatibility with upper elevation surfaces. When the ramp is folded into the stowed orientation, the extension section folds along with the ramp platform, maintaining compactness while preserving transition surface compatibility when deployed.
Solution Approach 2:
The extension section is designed to nest with the ramp platform when in the stowed orientation, similar to nested dolls. This allows the extension section to be compact during storage while still providing its full functional length and compatible transition surface when the ramp is extended and deployed for use.
3Adaptability or versatility
If the extension section is pivotally coupled to the ramp platform, then the adaptability to different vehicle types is improved, but the mechanism complexity increases
Solution Approach 1:
The pivotally coupled connection between the extension section and ramp platform provides dynamic adaptability. The pivotal connection allows the extension section to adjust its position and angle to accommodate different vehicle types and hitch orientations, while the simplicity of the pivotal mechanism (basic hinge joint) keeps the overall device complexity low compared to more complex articulated or telescopic mechanisms.
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 solution provides a seamless transition between stowed and extended orientations without requiring disassembly, reducing user hassle and preventing damage to the ramp assembly, while ensuring a secure and flush interface with upper elevation surfaces.
Implementation Method 1
the extension section pivots and travels in an arcuate motion when moving between the first extension section orientation and the second extension section orientation
Data Source
AI summary
A ramp assembly for a vehicle generally includes a ramp platform having a top substantially planar tread surface and first and second ends, and an extension section movably coupled to the first end of the ramp platform at an interface, wherein the extension section is configured to move between a first extension section orientation and a second extension section orientation.