Tailgate Slide Pivot Step Mechanism for Pickup Trucks
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Solution Overview
Problem
Vehicles with elevated cargo beds, such as pickup trucks, face difficulties in accessing cargo due to high ground clearance, making it challenging to load and unload items, especially when the tailgate is in an open position.
Innovation Solution
A rail assembly and pivot mechanism that allows the tailgate to slide and pivot downward, creating a full-size step surface parallel to the ground, assisted by a spring and cable system for easy movement between closed, open, and step positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a traditional fixed tailgate is used, then the structure is simple, but access to the elevated cargo bed is difficult
Solution Approach 1:
The tailgate incorporates a pivot mechanism that enables it to rotate downward to a step position, transforming from a static structure to a dynamic one. This allows the tailgate to lower itself to ground level, providing easy access to the cargo bed without requiring complex additional structures like ladders or ramps.
2Ease of operation
If the tailgate is lowered to provide a step, then ingress and egress are improved, but the tailgate becomes difficult to move between positions
Solution Approach 1:
A spring-loaded assist mechanism is integrated into the pivot system to counterbalance the weight of the tailgate. The spring provides upward force that assists in lifting the tailgate to the open position and controls its descent to the step position, significantly reducing the manual effort required to move the tailgate between configurations.
Solution Approach 2:
The spring-loaded pivot mechanism acts as an intermediary between the user and the tailgate weight. Instead of directly lifting or lowering the heavy tailgate, the user interacts with the assisted mechanism, which mediates the force requirement and makes position changes manageable despite the tailgate's 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 solution provides easier access to the cargo bed by lowering the tailgate to a usable height, enhancing ingress and egress while reducing the effort required to move the tailgate, thus improving usability and safety.
Implementation Method 1
the load assist comprises a spring assembly mounted to the vehicle body
Implementation Method 2
the spring assembly is coupled to a cable that is wound around at least first and second pulleys
Implementation Method 3
a pivot associated with the rails to allow the tailgate to pivot downwardly from the extended position
Data Source
AI summary
An apparatus, according to an exemplary aspect of the present disclosure includes, among other things, a rail assembly supported by a vehicle body, a tailgate coupled to the rail assembly and configured to slide on rails to an extended position relative to the vehicle body, and a pivot associated with the rails to allow the tailgate to pivot downwardly from the extended position to provide a step. A method according to an exemplary aspect of the present disclosure includes, among other things, sliding a tailgate to an extended position relative to a vehicle body and selectively pivoting the tailgate between a closed position, a tailgate deployed position, and a step position.