Camping Cart Frame and Steering for Easy Assembly on Soft Ground
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Solution Overview
Problem
Existing outdoor camping carts have complex and inconvenient designs, with difficult disassembly and maintenance, passive steering mechanisms, and inadequate support structures for wheels.
Innovation Solution
A novel outdoor camping cart design featuring a cart body with a body frame, cloth bag, and innovative wheel quick assembly, base support assembly, and handle assembly, allowing for easy assembly and disassembly, active steering, and improved maintenance accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If circlips are used to connect the frame tubes, then the structure is stable, but the disassembly and installation become complicated
Solution Approach 1:
The connecting structure is divided into modular components: frame tubes with integrated connecting ends, corner nuts with threaded holes, and separate fastening elements. This segmentation allows the frame to be easily assembled and disassembled by simply screwing and unscrewing the corner nuts, eliminating the need for complex circlip operations while maintaining structural integrity.
Solution Approach 2:
Corner nuts serve as intermediary components that mediate the connection between frame tubes. These corner nuts with threaded holes provide a simple screw-based fastening mechanism, replacing the complex circlip system and enabling easy assembly and disassembly while ensuring stable structural connection.
2Device complexity
If passive steering is used for the second wheel, then the structure is simple, but the operation becomes laborious and inconvenient
Solution Approach 1:
The steering mechanism is made dynamic through the pull rod system that actively connects the handle to the wheel assembly. When the user pulls or pushes the handle, the pull rods transmit force to the wheel, enabling active steering that adapts to terrain conditions. This dynamic steering system significantly reduces steering effort compared to passive steering, especially on soft ground, while maintaining reasonable structural complexity.
3Stability of the object's composition
If the third wheel is fixedly connected to the body frame, then the structure is stable, but maintenance becomes inconvenient
Solution Approach 1:
The wheel assembly is segmented into separable components: the wheel itself, the support tube, and the connecting mechanism via corner nuts. This segmentation allows the wheel to be easily detached from the body frame by removing the corner nuts, enabling convenient maintenance and replacement while ensuring stable operation during use through secure threaded connections.
4Strength
If complex connecting parts are used, then the structural strength is sufficient, but the assembly and disassembly become difficult
Solution Approach 1:
The complex fastening mechanism is extracted and replaced with simple threaded corner nuts that screw directly onto the frame tubes. This extraction of complexity maintains sufficient structural strength through the threaded connection design while enabling easy assembly and disassembly operations, eliminating the need for complicated multi-step fastening procedures.
Solution Approach 2:
The connecting mechanism uses parameter changes in the form of threaded fasteners where the corner nuts can be easily screwed on and off. This threaded parameter system provides sufficient clamping force and structural strength while maintaining operational simplicity, allowing users to quickly assemble and disassemble the cart without complex tools or procedures.
Data Source
AI summary
A novel outdoor camping cart, comprising a cart body, the cart body comprises a body frame and a cloth bag mounted on the body frame, and the body frame comprises frame flat tubes, which are connected by flat tube connectors. The support tube is pressed into the middle connector through the riveting shaft, so that the bottom support structure is easy to assemble and disassemble. The two side walls of the bump damping connector in contact with the wheel assembly are provided with bump structures, so that the bump damping connector has a damping effect when rotating on the wheel assembly, the bump damping connector is integrally formed with plastic, and the structure is simple. The bump damping connector is connected to the wheel assembly, and it is actively steered through the left and right pull rods during steering. Especially on soft ground and grass, the steering is more labor-saving.