Collapsible Wheel Structure for Luggage Box
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Solution Overview
Problem
Conventional luggage boxes with rollers cannot reduce their size when empty, leading to inefficient storage space utilization as they maintain a fixed size regardless of usage.
Innovation Solution
A collapsible wheel structure comprising a wheel base and a foldable rod that can be unfolded when in use and folded when not in use, allowing the luggage box to compress and reduce its size for storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a fixed connection structure is used between the bottom and sides of the luggage box, then the structural strength is improved, but the storage space efficiency deteriorates because the luggage box cannot be compressed when empty
Solution Approach 1:
The wheel structure employs a foldable rod that can transition between extended and folded states. When extended, it provides structural support for the luggage box; when folded, it allows the box to be compressed. This dynamic adaptability resolves the contradiction between maintaining structural strength and reducing storage volume.
Solution Approach 2:
The wheel base is divided into separate components including the support, foldable rod, and wheel assembly. This segmentation allows the structural elements to be independently folded or extended, enabling the luggage box to change its overall volume while maintaining structural integrity when needed.
2Stability of the object's composition
If the luggage box maintains a fixed size, then the structural stability is improved, but the storage efficiency deteriorates as it occupies the same space whether empty or full
Solution Approach 1:
The foldable rod mechanism allows the luggage box to dynamically adjust its size. The rod can be extended to maintain structural stability during use, or folded to compress the box for efficient storage, directly addressing the contradiction between stability and storage efficiency.
Solution Approach 2:
The structural parameters of the luggage box, specifically the length and position of the foldable rod, are changed between two states: extended for stability during use, and folded for compression during storage. This parameter adjustment resolves the contradiction between maintaining stability and improving storage efficiency.
3Volume of stationary object
If a collapsible wheel structure with a foldable rod is used, then the storage space efficiency is improved by compressing the luggage box, but the device complexity increases
Solution Approach 1:
The wheel base is segmented into modular components (support, foldable rod, wheel assembly) that can be independently manufactured and assembled. This modular segmentation makes the complex structure easier to produce, maintain, and operate, reducing the practical impact of device complexity.
Solution Approach 2:
The foldable rod provides a simple binary mechanism (folded/unfolded) that achieves compression functionality without requiring complex control systems or multiple moving parts, minimizing device complexity while still enabling storage space efficiency improvements.
Data Source
AI summary
A collapsible wheel structure for a luggage box includes a wheel base and a foldable rod. The wheel base is pivotally connected with a wheel. One end of the wheel base is pivotally connected to the foldable rod. The foldable rod is pivotally connected to the wheel base for connecting with the wheel base firmly. When the wheel base and the foldable rod are unlocked, the foldable rod is in a folded status. The collapsible wheel structure is adapted to couple with the bottom of the luggage box. When the foldable rod is in a folded status, the size of the luggage will be reduced.