Luggage Zipper Locking Device Junction Plane Integration
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Solution Overview
Problem
Existing luggage closure systems lack simplicity, robustness, and discretion, with locking devices being exposed and prone to damage, and often require complex mechanisms for opening.
Innovation Solution
The locking device and pull tab are integrated into the zipper's junction plane, with a flat face arrangement, and a plate-and-lock mechanism that conceals the locking components, allowing for a single-slider operation and increased rotation amplitude without recesses, enhancing aesthetics and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the locking device is placed outside the junction plane for easy access, then the ease of operation is improved, but the discretion and aesthetic appearance deteriorate
Solution Approach 1:
The locking device is positioned in the junction plane of the zipper, utilizing the two-dimensional plane of the zipper closure rather than protruding outward in three-dimensional space. This dimensional repositioning allows the locking mechanism to be accessed by sliding along the zipper line while maintaining a flat, aesthetically pleasing exterior surface.
2Ease of operation
If the locking device is exposed for easy access, then the ease of operation is improved, but the reliability deteriorates due to increased vulnerability to damage
Solution Approach 1:
By positioning the locking device within the junction plane rather than exposing it on the exterior surface, the locking mechanism is protected from impact forces that would normally affect protruding elements. The flat configuration reduces the surface area exposed to potential damage while maintaining operational accessibility through the zipper line.
3Reliability
If a complex mechanism is used for opening the luggage, then the reliability of the closure is improved, but the device complexity increases
Solution Approach 1:
The locking function is merged with the existing zipper slider mechanism. The locking device utilizes the same sliding motion and structural elements as the zipper closure, eliminating the need for separate locking components. This integration maintains secure closure through the interlocking zipper teeth while avoiding additional mechanical complexity.
4Ease of operation
If the locking device protrudes from the container to be accessible, then the ease of operation is improved, but the manufacturing complexity increases due to required recesses
Solution Approach 1:
The locking device is configured to operate within the flat junction plane of the zipper rather than requiring three-dimensional protrusion or recesses in the container structure. This two-dimensional positioning simplifies manufacturing by eliminating the need for complex mold cavities or structural modifications to the container shells.
Data Source
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AI summary
A luggage item (1) comprising: − a container (3) delimiting an internal volume (6), − a zip fastener (10) extending along a junction plane (P) and comprising a first strip (12) having a first edge (11), a second strip (14) having a second edge (13), a slider (16) and a puller (18) linked to the slider (16), the slider being movable between a closed position and an open position, − a locking device (30) attached to the container (3) and capable of engaging with the puller (18) in a locked position, in order to keep the slider (16) in the closed position, in which closed position the locking device (30) and the puller (16) are arranged in the junction plane.