Cart Frame Synchronization Rod and Oscillating Foot Assembly
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Solution Overview
Problem
Existing carts are not convenient for setting a bottom support, leading to increased complexity and design challenges in creating a foldable frame structure that can accommodate multiple passengers and goods.
Innovation Solution
A cart design featuring two side frames with vertical synchronization rods, oscillating rods, and a locking mechanism that allows for easy folding and deployment, eliminating the need for separate foldable support members and simplifying the frame structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If foldable side baffles are added to increase passenger capacity and cargo loading capability, then the cart's versatility is improved, but the structure complexity increases and bottom support installation becomes inconvenient
Solution Approach 1:
The patent combines the support members with the side frames into an integrated structure. The support members are directly connected to the side frames at multiple positions, eliminating the need for separate foldable support mechanisms. This merging approach maintains structural integrity while simplifying the overall design and avoiding the complexity of separate foldable components.
Solution Approach 2:
The side frames serve multiple functions: they provide structural support, enable folding capability for compact storage, and integrate the support members for stable loading. This multi-functionality allows the cart to accommodate multiple passengers and cargo while maintaining a simple structure that doesn't require additional foldable support mechanisms.
2Ease of operation
If separate foldable support members are added to enable folding capability, then the cart's portability is improved, but the structure complexity and difficulty of setting bottom support increase
Solution Approach 1:
The support members are merged with the side frames through direct connection at multiple positions. This integration means that when the side frames fold, the support members fold with them automatically, eliminating the need for separate foldable support mechanisms and reducing structural complexity.
Solution Approach 2:
The support members are pre-connected to the side frames at multiple positions during manufacturing. This preliminary action ensures that the support structure is already integrated and will automatically fold with the side frames, eliminating the need for complex assembly operations during folding or deployment.
Data Source
AI summary
A cart has a folded configuration and a deployed configuration. The cart includes two side frames arranged opposite to each other; and a plurality of support members connected between the two side frames. Each side frame includes a vertical synchronization rod with a front foot assembly and a rear foot assembly arranged on two sides of the vertical synchronization rod. The front foot assembly includes a front foot rod with an upper front oscillating rod and a lower front oscillating rod hinged between the vertical synchronization rod and the front foot rod. A bottom of the front foot rod is hinged to a front wheel. The rear foot assembly includes a rear foot rod with an upper rear oscillating rod and a lower rear oscillating rod hinged between the vertical synchronization rod and the rear foot rod. A bottom of the rear foot rod is hinged to a rear wheel.