Wagon With Expandable Under-Basket and Rear Carriages
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Solution Overview
Problem
Conventional non-motorized wagons have limited capacity, making it difficult to transport large items, which often requires additional assistance or multiple trips, especially when carrying items like picnic tables or coolers.
Innovation Solution
A modified wagon design featuring a flexible basket and additional carriages: a first carriage attached below the basket to accommodate large items and a second carriage at the rear with a removable platform, expanding the wagon's capacity to transport items too large for the basket, along with a pivotable handle for compact storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the wagon uses only a standard basket, then the structure remains simple, but the transport capacity is limited and cannot accommodate large items
Solution Approach 1:
The wagon is divided into multiple independent carriage units: a main basket and two expandable carriages (first carriage below the basket, second carriage at the rear). Each carriage can be independently attached or detached, allowing the transport capacity to be segmented and expanded without requiring a complete redesign of the entire wagon structure.
Solution Approach 2:
The first carriage is positioned underneath the main basket, utilizing the vertical space below the basket support rack. This nested arrangement allows the first carriage to be hidden when not in use, maintaining a compact profile while expanding capacity when needed.
2Quantity of substance
If additional carriages are added to expand capacity, then large items can be transported, but the device complexity increases
Solution Approach 1:
The carriages are designed with dynamic attachment mechanisms that allow them to be easily connected and disconnected from the main wagon body. The first carriage uses brackets that can be engaged or disengaged from the basket support rack, while the second carriage can be attached to the rear, enabling the wagon to adapt its configuration based on transport needs.
Solution Approach 2:
The wagon design provides multi-functionality by combining a standard basket with expandable carriage options. The same wagon structure can transport both small items in the basket alone and large items using the carriages, making it a versatile solution for varying transport requirements.
3Ease of operation
If the handle is fixed in position, then the structure is simple, but the storage convenience is poor when the wagon is not in use
Solution Approach 1:
The transport handle is designed to be rotatable, allowing it to move between a horizontal position for pulling the wagon and a vertical position for compact storage. This dynamic adjustment enables the handle to adapt to different operational states, improving storage convenience without requiring a completely separate storage mechanism.
Data Source
AI summary
A wagon is disclosed having a basket by which to carry a first article, a basket support rack on which the basket sits, a first carriage connected to the wagon below the basket by which to carry a second article, and a second carriage connected to the wagon behind the basket by which to carry a third article. The first carriage includes a pair of brackets, each of which having first and second C-shaped bracket arms being pivotally connected to and depending downwardly from one side of the basket support rack. The C-shaped bracket arms are arranged in spaced facing alignment to carry the second article therebetween. The second carriage includes a flat platform having a pair of engagement hooks extending therefrom. The engagement hooks of the platform are detachably connected in surrounding engagement with respective platform retainer clips that are connected to the rear of the basket support rack.