Folding Wagon Frame With Collapsible Arms for Compact Storage
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Solution Overview
Problem
Existing multi-child strollers or wagons have complex structures and are inconvenient to fold and store due to their size and additional accessories, which increase weight and occupied area.
Innovation Solution
A stroller or wagon design featuring a frame with rotatable and collapsible connecting arms, allowing the frame to be folded easily by rotating and folding vertical rods and side rods, along with a detachable roof, to reduce the occupied space when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional accessories and facilities (coverings, safety belts, handrails) are equipped to provide comfort and safety for two children, then safety and comfort are improved, but weight and occupied area increase
Solution Approach 1:
The stroller is divided into modular components including detachable roof assemblies, separate seat units, and independent connecting arms. This segmentation allows individual components to be removed or folded independently, reducing overall weight when full accessories are not needed while maintaining safety and comfort when assembled.
Solution Approach 2:
The stroller employs dynamic elements such as rotatable and collapsible connecting arms, adjustable roof assemblies, and foldable side rods. These dynamic components allow the structure to adapt between a fully assembled safe configuration and a reduced-weight compact configuration, optimizing both safety and weight based on usage needs.
2Reliability
If additional accessories and facilities are equipped to provide comfort and safety for two children, then safety and comfort are improved, but occupied area increases
Solution Approach 1:
The roof assembly is designed to nest within the frame structure when removed or folded, and the connecting arms collapse inward toward the central axis. This nesting approach allows safety features to be integrated into the overall structure rather than adding external bulk, reducing occupied area while maintaining protective functions.
Solution Approach 2:
The stroller utilizes vertical space through adjustable and removable roof assemblies that can be positioned at different heights or angles. This dimensional approach allows safety coverings to provide protection without increasing horizontal occupied area, as the protective elements extend vertically rather than laterally.
3Reliability
If the stroller is designed to support two children with all necessary accessories, then capacity and safety are improved, but folding and storage convenience deteriorates
Solution Approach 1:
The stroller's segmentation into detachable roof assemblies, separate seat units, and independent connecting arms allows each component to be folded or removed independently. This modular approach simplifies the folding process compared to integrated designs, as each segment can be collapsed without requiring the entire structure to be disassembled, maintaining safety features while improving storage convenience.
Solution Approach 2:
The rotatable and collapsible connecting arms provide dynamic folding mechanisms that maintain structural integrity and safety positioning during the folding process. These dynamic elements allow the stroller to transition smoothly between assembled and compact states while preserving safety features, making folding and storage more convenient without compromising reliability.
Data Source
AI summary
A wagon including a frame or base is provided. The frame is supported by a plurality of wheels and the wagon further includes a first rotatable rod and a second rotatable rod connected to a front end of the frame and each rotatable with respect to the frame, a third rotatable rod and a fourth rotatable rod connected to a rear end of the frame and each rotatable with respect to the frame, a first rotatable, disengageable, and collapsable connecting arm arrangement rotatably mounted with the first rotatable rod and the third rotatable rod, and a second rotatable, disengageable, and collapsable connecting arm arrangement rotatably mounted with the second rotatable rod and the fourth rotatable rod.