Collapsible Wagon Tailgate Truss Assembly for Heavy Loads
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Solution Overview
Problem
Existing collapsible wagons lack a sturdy foldable platform to support heavier loads without increasing the overall size and weight, and existing designs are inconvenient for users due to multiple conjugating points that weaken the structure.
Innovation Solution
A collapsible wagon with a wagon frame assembly and a foldable/collapsible tailgate frame assembly, featuring a tailgate platform with side rails, sliders, and a wheel support frame that transitions between collapsed and extended states, forming a triangle truss structure for stability and support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a foldable platform is added to support heavier loads, then the load-bearing capacity is improved, but the overall size and weight of the wagon increases
Solution Approach 1:
The tailgate frame assembly is divided into separate modular components including side rails, cross members, and a platform that can be independently folded and stored. This segmentation allows the load-bearing structure to be compact when not in use while providing full support capacity when deployed
Solution Approach 2:
The tailgate assembly incorporates pivot connections and sliding mechanisms that allow the structure to dynamically transition between folded and extended states. The dynamic design enables the platform to adapt its configuration based on whether it needs to support load or be stored in a compact form
2Adaptability or versatility
If multiple conjugating points are added to enable folding, then the collapsibility is improved, but the structural strength is weakened
Solution Approach 1:
The tailgate assembly is designed with pre-positioned pivot points and connection members that are strategically located to maintain structural integrity during folding operations. The connection members are preliminarily configured to engage at optimal locations that preserve strength while enabling collapse
Solution Approach 2:
The frame components utilize composite construction with rigid materials for load-bearing elements and flexible joints for folding mechanisms. This composite approach allows the structure to be both strong when assembled and easily collapsible when needed
3Adaptability or versatility
If a foldable tailgate assembly is added, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The tailgate frame assembly is merged with the existing wagon frame through shared pivot points and connection members. The side rails of the tailgate connect to the wagon's rear frame, integrating the foldable mechanism into the existing structure rather than adding completely separate components
Solution Approach 2:
The connection members and pivot points serve multiple functions: they enable folding motion, provide structural support when extended, and allow the tailgate to be securely positioned in intermediate configurations. This multi-functionality reduces the need for additional specialized components
Data Source
AI summary
A collapsible wagon with a foldable/collapsible tailgate frame assembly coupled to a collapsible wagon frame assembly. The collapsible wagon frame assembly has a collapsible frame having a rear frame. The tailgate frame assembly has a tailgate platform having a pair of side rails, each pivotally connected to a corresponding bottom portion near the base of the rear frame, and a slider slidable along the corresponding side rails. A wheel support frame has ends each pivotally connected to a corresponding one of the side rails. A first connection member is pivotally connected to the slider and a wheel support frame, and a second connection member is pivotally connected to the slider and the rear frame. The tailgate frame assembly transitions between a collapsed state and an extended state with each slider sliding along a corresponding side rail.