Interlocking Zipper Pull-Tabs for Force-Resistant Locking
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Solution Overview
Problem
Existing zipper locking solutions are susceptible to opening under force or require a combination to unlock, lacking robust security for securing items.
Innovation Solution
A zipper design featuring interlocking pull-tabs with flexible connectors and couplers that engage and rotate to secure the zipper pulls together, providing multiple locked positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external locking elements such as padlocks are used to secure zipper pulls, then the zipper can be locked, but the locking mechanism is susceptible to opening under applications of force
Solution Approach 1:
The patent merges the locking function directly into the zipper pull structure itself. The locking coupler is integrated with the pull-tab, and the locking slot is formed in the slider body, creating a unified locking mechanism that cannot be easily separated or forced open. This integration eliminates the vulnerability of external padlocks while maintaining reliable locking.
Solution Approach 2:
The locking mechanism uses a nested structure where the locking coupler (with protrusion and cavity) fits within the locking slot of the slider body. The protrusion of one pull-tab engages with the cavity of the other pull-tab, creating an interlocked nested arrangement that resists forced opening while allowing legitimate access.
2Reliability
If combination locked slots are used to receive and lock zipper pulls, then the zipper can be secured, but a combination is required to unlock it
Solution Approach 1:
The locking mechanism is designed to be self-operating through a simple rotation action. The user rotates the pull-tab to engage or disengage the locking coupler with the locking slot, eliminating the need for external combinations, keys, or complex unlocking procedures. The system serves itself through intuitive manual operation.
3Reliability
If locking couplers with protrusions and cavities are integrated into pull-tabs, then the zipper pulls can lock together securely, but the device complexity increases
Solution Approach 1:
The locking mechanism is segmented into distinct functional components: the locking slot in the slider body, the locking coupler on the pull-tab, the protrusion element, and the cavity element. This segmentation allows each component to be optimized independently while maintaining overall simplicity. The modular design facilitates manufacturing and assembly without requiring complex integrated structures.
Data Source
AI summary
Locking pull-tabs for a zipper include a first pull-tab that may be connected to a first slider and a second pull-tab that may be connected to a second slider of the zipper. The first pull-tab and second pull-tab include a first locking coupler and a second locking coupler, respectively. The first locking coupler and second locking coupler may enable the first pull-tab and second pull-tab to engage each other in a manner that secures a zipper in a closed arrangement and, thus, provides some security to contents of an item that are enclosed in the item with the zipper. The first locking coupler and second locking coupler may engage each other in a manner that requires intentional and conspicuous manipulation of the first pull-tab and second pull-tab to uncouple them. Methods for locking a zipper are also disclosed.