Folding Cart Foldable Reinforcement Assembly
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Solution Overview
Problem
Folding carts suffer from reduced structural strength when unfolded, limiting their carrying capacity and stability.
Innovation Solution
A folding cart design featuring a front frame, rear frame, and a foldable reinforcement assembly that connects the frames, providing additional structural support and stability when unfolded, while allowing for easy folding and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cart is designed to be foldable to reduce overall area, then the cart becomes more portable and easier to store, but the structural strength of the cart after being unfolded is reduced
Solution Approach 1:
The cart frame is divided into multiple segments (front bottom rod, rear bottom rod, top rods) connected by hinges and connecting rods. This segmentation allows the cart to be folded into a compact configuration for portability while maintaining structural integrity when unfolded through the coordinated movement of segments.
Solution Approach 2:
The cart employs dynamic connections including hinges at multiple locations (front bottom rod-rear bottom rod, top rods, connecting rods) that allow the structure to transition between folded and unfolded states. The dynamic nature of these connections enables the cart to adapt its configuration based on operational needs while preserving strength in the unfolded state.
2Ease of operation
If the cart structure is made foldable to improve portability, then the cart can be easily stored and transported, but the stability and carrying capacity of the cart are reduced
Solution Approach 1:
Multiple reinforcing elements (first reinforcing rod, second reinforcing rod, connecting rods, supporting frames) are merged into a unified reinforcement system that works together to enhance cart stability. These elements are combined in such a way that they provide additional structural support when the cart is unfolded, compensating for the reduced stability inherent in foldable designs.
Solution Approach 2:
The reinforcement assembly is pre-configured with hinges and connecting rods positioned to automatically engage and provide stabilizing support when the cart is unfolded. The preliminary arrangement of these reinforcing elements ensures that stability enhancement occurs naturally during the unfolding process without requiring additional active stabilization mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The foldable reinforcement assembly enhances the structural strength of the folding cart when unfolded, preventing deformations and improving stability, while maintaining convenience in folding and storage.
Implementation Method 1
the foldable reinforcement assembly includes a first reinforcing rod hinged to the front frame and a second reinforcing rod hinged to the rear frame, an end of the first reinforcing rod is hinged with an end of the second reinforcing rod
Implementation Method 2
an end of the rear bottom rod is connected with a locking member, and an end of the front bottom rod is located inside the locking member and forms a hinge; an end of the locking member is provided with a lapping portion used for lapping on the front bottom rod in the unfolded state
Data Source
AI summary
The present invention discloses a folding cart, which comprises a front frame including a front bottom rod that can be turned upwards and downwards, a rear frame including a rear bottom rod that can be rotatably unfolded or folded relative to the front bottom rod and a foldable reinforcement assembly for connecting the front and rear bottom rods. In an unfolded state, the front and rear frames are away from each other for unfolding. In a folded state, the front frame and the rear frame are close to each other for folding. Through the foldable reinforcement assembly, the bearing capacity of the frame with a single bottom rod is strengthened after the frames are unfolded, avoiding deformations of the frames due to low strength, and the foldable reinforcement assembly can also be folded together with the frame when the frame is folded, which is convenient for storage.