Folding Wagon Trapezoidal Frame and Telescopic Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional wagons are difficult to fold and store due to their rigid design, making them cumbersome for transportation and storage, despite modifications aimed at improving portability and compactness.
Innovation Solution
A folding wagon with a trapezoidal front and rear frame, interlocking folding members, and a retractable canopy system, featuring a four-bar steering mechanism and telescopic handle, allowing for easy folding and unfolding, and a lightweight design capable of carrying 65 kg loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a traditional rigid wagon design is used, then structural strength is maintained, but portability and storage ease deteriorate
Solution Approach 1:
The wagon frame is divided into multiple telescopic members that can slide relative to each other. The main frame includes front and rear telescopic members with interconnected sub-members, allowing the structure to be segmented for folding while maintaining overall structural integrity when extended
Solution Approach 2:
The wagon employs dynamic telescopic mechanisms that allow the frame to transition between extended and retracted states. The telescopic members with sliding connections enable the wagon to adapt its size dynamically, providing both strength when needed and portability when folded
2Strength
If a traditional rigid wagon design is used, then load-bearing capacity is maintained, but storage compactness deteriorates
Solution Approach 1:
The telescopic members are designed with nested structures where smaller members slide within larger ones. The front and rear telescopic members contain multiple levels of nesting, allowing the wagon to compact into a small volume while maintaining full load-bearing capacity when extended
Solution Approach 2:
The folding mechanism utilizes multi-dimensional movement through telescopic sliding and angular articulation. The frame members move along multiple axes during folding, transforming from a large three-dimensional structure to a compact folded configuration
3Ease of operation
If telescopic members with sliding connections are used, then folding capability is achieved, but structural complexity increases
Solution Approach 1:
Multiple structural functions are merged into the telescopic members. The same components provide both the load-bearing frame structure and the folding mechanism, eliminating the need for separate folding joints and reducing overall structural complexity despite the sliding connections
Data Source
AI summary
A folding wagon with a canopy has a front frame having a trapezoidal shape. The front frame is made of a front top horizontal member connected to a pair of front vertical members, namely a front left vertical member and a front right vertical member. The rear frame has a trapezoidal shape. The rear frame is made of a rear top horizontal member connected to a pair of rear vertical members, namely a rear left vertical member and a rear right vertical member. A crossbar assembly connects the front frame to the rear frame. The crossbar assembly forms a left side wall and a right side wall of the folding wagon. A folding bottom panel connects the front frame to the rear frame. The folding bottom panel forms a floor of the folding wagon.