Collapsible Cart Locking Sidewalls for Heavy-Load Transport
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Solution Overview
Problem
Existing collapsible carts are not sturdy enough to transport heavy objects due to insufficient sidewall strength.
Innovation Solution
A collapsible cart design featuring a rigid frame with foldable sidewalls and a telescoping handle, incorporating tracks and slideable members for secure locking, and a rigid cover panel for added stability and load capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cart is designed to be collapsible for storage, then storage convenience is improved, but sidewall strength and load capacity deteriorate
Solution Approach 1:
The sidewalls are divided into multiple panels (first sidewall panel, second sidewall panel, third sidewall panel) that can be independently folded and locked. This segmentation allows the cart to collapse into a compact form for storage while maintaining structural integrity when deployed, as each panel can be securely locked in its extended position.
Solution Approach 2:
The sidewalls transition from a static structure to a dynamic one with folding and locking mechanisms. The sidewalls can be folded inward for compact storage and then locked into their extended positions using track and slideable member assemblies, providing both storage convenience and structural strength as needed.
2Strength
If the cart uses a rigid frame structure, then load capacity is improved, but device complexity increases
Solution Approach 1:
The frame structure merges rigid materials with folding/locking mechanisms into an integrated design. The track and slideable member assemblies are combined with the sidewall panels to create a unified structure that provides rigidity and load capacity while maintaining collapsibility, rather than using separate rigid components.
Solution Approach 2:
The cart employs composite construction combining rigid materials (metal or rigid plastic) for the frame, sidewall panels, and cover to provide strength and load capacity. This composite approach allows the structure to be both strong and collapsible when properly designed with folding and locking mechanisms.
Data Source
AI summary
Embodiments of the present disclosure may include a collapsible cart configured to transition from a closed condition where it may be folded up to an open condition where it may be expanded for use, the collapsible cart including a rigid frame forming a compartment, the rigid frame having a front wall, a rear wall, a right sidewall, a left sidewall, and a bottom wall, the right sidewall and the left sidewall may be configured to fold inwardly in the closed condition. In some embodiments, the right sidewall including a first right panel rotatably coupled to a second right panel. In some embodiments, a retractable handle mechanism is disposed at, within or adjacent the back wall. The retractable handle mechanism includes a hand grip attached to a telescoping assembly. The telescoping assembly is pivotably coupled at a proximal end to the bottom of the rear wall.