Collapsible Wagon Foldable Base Frame Scissor Hinges
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Solution Overview
Problem
Existing collapsible wagons face limitations in capacity and size reduction, as they either compromise on structural stability or increase the size and weight of the frame.
Innovation Solution
The collapsible wagon features a sturdy foldable base frame with scissor hinge structures that support a flexible container, allowing for increased capacity and easy size minimization without substantial weight or size increments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of scissor hinge structures is increased to enhance capacity and support length, then the storage capacity and item length increase by approximately 50%, but the structural complexity and potential weight increase
Solution Approach 1:
The base frame is divided into multiple scissor hinge structures (first, second, and third scissor hinge structures) that are segmented along the longitudinal axis. Each scissor hinge structure functions as an independent expandable unit, allowing the overall frame to achieve greater capacity through modular repetition rather than a single complex mechanism
Solution Approach 2:
The scissor hinge structures are designed to be dynamically expandable and collapsible. When expanded, they provide maximum storage capacity and support for long items; when collapsed, they minimize the overall frame size for compact storage and transport, making the complexity manageable through state transformation
2Volume of stationary object
If the scissor hinge structures are expanded to increase the receiving space and capacity, then the storage capacity increases by approximately 50%, but the size of the wagon increases
Solution Approach 1:
The scissor hinge structures enable the wagon to dynamically transform between a compact folded state for transport and an expanded state for storage. The receiving space volume increases by approximately 50% when expanded, while the wagon can be collapsed back to a compact size when not in use, resolving the contradiction between storage capacity and transport size
Solution Approach 2:
When the scissor hinge structures are collapsed, the components nest within each other, minimizing the overall wagon size. The first, second, and third scissor hinge structures can be folded into a compact configuration that fits within a smaller volume, allowing the wagon to achieve large capacity when needed while maintaining compact dimensions for transport
Data Source
AI summary
An extended collapsible wagon including a handle, a first supporting frame, and a second supporting frame. The first supporting frame and the second supporting frame are connected with a pair of connecting members. Each connecting member comprises three scissor hinge structures. A folding base frame is provided below the receiving space defined between the first and second supporting frames and the pair of connecting members, to provide a sturdy support structure for the flexible container. The folding base frame includes first and second base frame panels located below respective one of two adjacent scissor hinge structures and a third base frame panel having two sub-panels pivotally connected to fold below the third scissor hinge structure. The first base frame is pivotally connected to the second base frame panel, and the second base frame is pivotally connected to the third base frame, so as to form the foldable base frame.