Folding Pull Rod Structure for Durable Packaging Cases
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Solution Overview
Problem
Existing telescopic pull rods in packaging cases are fragile, prone to damage, and have issues with parts falling out or failing to retract properly, leading to operational difficulties.
Innovation Solution
A packaging case with a folding pull rod design that includes a buckling groove and buckling member for securing the folded pull rod within the case body, using L-shaped fixed rods and folding rods connected by folding joints and sleeve tubes with elastic locking cores for stability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a telescopic pull rod is used, then the length of the pull rod can be adjusted according to actual needs, but the pull rod is fragile and easy to damage due to excessive collisions and impacts
Solution Approach 1:
The pull rod is divided into multiple rod sections that can be folded relative to each other. Each section is connected through folding joints, allowing the pull rod to be segmented into collapsible units that maintain strength while reducing overall length when not in use.
Solution Approach 2:
Instead of extending the pull rod outward (telescopic design), the invention folds the rod sections back toward the case body. The rod is inverted from an extended configuration to a folded configuration, storing the rod along the side of the case rather than protruding from it.
2Ease of operation
If a telescopic pull rod is used, then the length can be adjusted for easier relocation, but parts inside the pull rod may be misplaced after the pull rod is drawn out for a long time, resulting in the pull rod not being able to be pressed back
Solution Approach 1:
The folding joints are pre-configured with predetermined folding angles and positions. The rod sections are designed to fold along predefined paths, ensuring that even after extended use, the components return to their correct positions without misplacement.
Solution Approach 2:
The folding joints incorporate buffering structures that absorb impact and guide the rod sections back into proper alignment during retraction. This prevents misplacement of internal parts and ensures reliable return to the folded position.
3Volume of moving object
If the pull rod is folded and embedded in the buckling groove, then the space occupied by the pull rod is reduced, but the structure becomes more complex with buckling grooves and buckling members
Solution Approach 1:
The buckling groove is integrated directly into the case body structure, combining the storage function with the case design. The folding joint mechanisms are merged with the rod structure itself, eliminating separate mounting components and reducing overall structural complexity.
Solution Approach 2:
The buckling groove serves multiple functions: it stores the folded rod, provides structural support, and guides the folding motion. The folding joints simultaneously provide articulation, locking, and alignment functions, reducing the need for separate components.
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 folding pull rod structure is sturdy, easy to use, and reduces the risk of damage, providing a stable and long-lasting carrying solution with reduced space requirements.
Implementation Method 1
the elastic locking core pops out to be buckled into the locking hole to lock the sleeve tube; The elastic locking core is squeezed to contract inward to be separated from the locking hole to unlock the sleeve tube
Data Source
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AI summary
The present disclosure provides a packaging case with a folding pull rod, it comprises a case body and the pull rod disposed on the case body; the pull rod has at least one fold, the case body comprises a buckling groove and a buckling member, when the pull rod is folded, its rod body after being folded is embedded in the buckling groove and is fixed to the case body by buckling to the buckling member; the buckling member is configured to release the pull rod; the pull rod comprises L-shaped fixed rods, first folding rods, and second folding rods; a top surface of the case body comprises buckling grooves, and a buckling member is disposed on a front side surface of the case body; the L-shaped fixed rods are fixed to a bottom surface and a rear side surface of the case body; the first folding rods are configured to be folded relative to the L-shaped fixed rods, and the second folding rods are configured to be folded relative to the first folding rods; after being folded, the first folding rods are embedded in the buckling grooves, and the second folding rods are buckled to the buckling member; and the packaging case is disposed with the folding pull rod, which is relatively sturdy and durable compared to the telescopic pull rod.