On-Demand Prop Rod for Utility Vehicle Cargo Box Stability
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Solution Overview
Problem
Existing cargo box support systems for off-road utility vehicles require a prop rod for secure tilting, but operators may not want to use it every time, especially for brief unloading tasks, as the gas cylinder does not provide sufficient support to hold the box securely in the raised position.
Innovation Solution
A prop rod with a longitudinal slot in the utility vehicle frame and a slidable bar that blocks the rod from entering a notch, allowing the operator to flex and engage the rod as needed to support the cargo box in the raised position, using a pivotally connected end and a leg member that slides within the slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a prop rod is used to support the cargo box in the raised position, then the cargo box stability is improved, but the ease of operation deteriorates because the operator must manually engage and disengage the prop rod each time
Solution Approach 1:
The prop rod system is designed to automatically engage with the cargo box when raised, using the box's own weight and movement to trigger the engagement mechanism. The rod automatically disengages when the box is lowered, eliminating the need for manual operation while maintaining stability during elevated positions
Solution Approach 2:
A trigger mechanism acts as an intermediary between the cargo box and the prop rod. When the cargo box is raised, it activates the trigger which in turn engages the prop rod. This intermediary mechanism automates the connection process, resolving the contradiction between automatic engagement and operational simplicity
2Ease of operation
If the gas cylinder is used to lift the cargo box, then the ease of operation is improved, but the cargo box stability deteriorates because the gas cylinder cannot provide sufficient support to hold the box securely in the raised position
Solution Approach 1:
The support system is segmented into two distinct components with divided responsibilities: the gas cylinder handles the lifting function while the prop rod handles the support and stabilization function. This segmentation allows each component to optimize its specific function without compromise
Solution Approach 2:
The system transitions from a static single-component design to a dynamic two-component system where the gas cylinder provides active lifting force and the prop rod provides passive support. The prop rod remains inactive during lifting but automatically engages to provide stability once the box reaches the raised position
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 on-demand use of the prop rod to securely support the cargo box in the raised position, allowing operators to choose when to use it, enhancing flexibility and convenience while maintaining stability during unloading and transport.
Implementation Method 1
When the operator raises the cargo box, the angle of force through the rod from the box urges the lower end of the rod into a seat or notch in a slot or track in the utility vehicle frame. The rod then secures the box in its tilted or upright position.
Implementation Method 2
A prop rod for a utility vehicle cargo box includes a longitudinal slot in the utility vehicle frame member, the slot having a downwardly directed notch at a rear portion thereof. The prop rod has a first end pivotally connected to the cargo box and a second end slidable along the slot.
Data Source
AI summary
A prop rod for a utility vehicle cargo box has a first end pivotally connected to a frame member of the cargo box, and a second end slidable along a slot in a frame member of the utility vehicle. The slot has a downwardly directed notch at a rear portion thereof. The prop rod is biased to a disengaged position in which the second end or the prop rod cannot enter the notch. The prop rod is sufficiently flexible so that an operator can overcome the bias and move the prop rod to an engaged position in which the second end can enter the notch to hold up the cargo box in a raised position.