Pivotal L-Shaped Platform for Tailgate Loading
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Solution Overview
Problem
Existing pick-up truck tailgate systems fail to assist in loading heavy or large objects alone, as they require additional help for lifting and pushing into the truck bed, and existing solutions like four-bar linkages are cumbersome, costly, and risk damage to the tailgate.
Innovation Solution
A tailgate assembly with a pivotally attached L-shaped platform and retractable link, which can pivot between extended, retracted, inclined, and stowed positions, allowing for easy loading and unloading of objects without the need for additional assistance, using either a reel and cable or a power cylinder for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a four bar linkage is used to assist lifting objects into the truck bed, then lifting capability is improved, but the device complexity and cost increase significantly
Solution Approach 1:
The loading apparatus is divided into separate functional components: a tailgate assembly with pivot connector, a detachable L-shaped platform, and a retractable link system. This segmentation allows each component to perform its specific function independently while reducing overall system complexity compared to a monolithic four-bar linkage.
Solution Approach 2:
The L-shaped platform is designed to pivot dynamically between multiple positions (extended, retracted, inclined, and stowed) relative to the tailgate. This dynamic configuration allows the platform to adapt to different loading scenarios and provides mechanical advantage for lifting heavy objects without requiring a complex fixed linkage structure.
2Force
If a ramp and four bar linkage are assembled to assist loading, then lifting capability is improved, but ease of manufacture and assembly deteriorate due to heavy weight and complicated structure
Solution Approach 1:
The L-shaped platform incorporates a retractable link system with a reel and cable that enables single-person operation. The user can manually retract the platform to the desired position and secure it, eliminating the need for heavy assembly and disassembly of traditional ramps and linkages.
Solution Approach 2:
The platform's position and configuration parameters can be changed dynamically during operation. The L-shaped platform can pivot between extended, retracted, inclined, and stowed positions, allowing it to adapt to different loading requirements without requiring physical reconfiguration or heavy assembly.
3Force
If the tailgate is removed to facilitate loading assistance, then loading capability is improved, but time consumption and risk of tailgate damage increase
Solution Approach 1:
The loading apparatus merges the tailgate and L-shaped platform into a single integrated assembly that remains attached during loading operations. The bracket selectively attaches to the tailgate, and the L-shaped platform pivots relative to it, allowing both components to work together without separation.
Solution Approach 2:
The L-shaped platform serves multiple functions: it provides mechanical advantage for lifting heavy objects, can be positioned at different angles for various loading scenarios, and includes a recess to accommodate objects of different shapes and sizes. This multi-functionality eliminates the need to remove the tailgate for different loading tasks.
4Device complexity
If a traditional loading system is used, then simplicity is maintained, but the ability to load heavy objects alone deteriorates
Solution Approach 1:
The L-shaped platform acts as an intermediary mechanical element between the user and the heavy object. By positioning the platform in the extended position and applying force to its free end, the user can lift heavy objects with reduced effort through the mechanical advantage provided by the pivot connector and platform geometry.
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
Enables solo loading and unloading of heavy objects without injury, reducing the risk of tailgate damage and simplifying the process, while being detachable and easier to use than traditional solutions.
Implementation Method 1
A retractable link is attached to the bracket to pivot the L-shaped platform about the pivot connector. The retractable link may include a reel attached to the bracket, and a cable having a first end secured to the reel and a second end attached to a distal end of the L-shaped platform.
Implementation Method 2
The retractable link may include a power cylinder having a head portion attached to the bracket and a rod portion attached to a distal end of the L-shaped platform. The power cylinder may be hydraulic or pneumatic.
Data Source
AI summary
A tailgate assembly is provided for a pickup truck tailgate. The tailgate assembly includes a tailgate, a bracket, an L-shaped platform, and a retractable link. The L-shaped platform is pivotally attached to the bracket, which is selectively attachable to the tailgate. The L-shaped platform pivots about a pivot point to assist in loading objects into the truck bed by lifting them into the truck bed and rolling/sliding them into the truck bed. The retractable link facilitates the pivoting of the L-shaped platform and is attached to the bracket and a distal end of the L-shaped platform.