Twist-lock Box Closure Device with Tamper Evidence
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Solution Overview
Problem
Existing methods for closing and sealing boxes, such as tucking flaps under each other or using tape, lack effectiveness and durability, and existing closure devices do not provide the necessary advantages for secure sealing and tamper evidence.
Innovation Solution
A box closure device with a first piece, a second piece, and a hub that allows for engagement and twisting to lock box flaps in a closed position, featuring a blade for insertion, a glide for positioning, and optional sleeves and tamper-evident features for enhanced security and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tape is used to seal the box, then effective sealing is achieved, but the tape is single-use and removal damages the box
Solution Approach 1:
The closure device is divided into separate components: a first piece with engagement portions, a second piece, and a hub. This segmentation allows the device to be inserted through the box gap and locked without damaging the box, enabling reuse while maintaining secure sealing.
Solution Approach 2:
The closure device acts as an intermediary mechanism between the box flaps, providing a reusable locking solution that doesn't directly damage the box structure. The device engages with the flaps through the gap without requiring attachment to the box itself.
2Ease of operation
If a corner of the box flap is bent to tuck under another flap, then closure is achieved, but the flap stiffness and integrity degrade over time
Solution Approach 1:
The closure device serves as an intermediary that achieves flap closure without requiring the flaps to be bent or deformed. The device is inserted through the gap between flaps and locked in place, maintaining flap integrity while providing secure closure.
Solution Approach 2:
The manual mechanical action of bending and tucking flaps is replaced by inserting and rotating a closure device through the gap. This substitution eliminates the deforming force applied to the flaps while achieving the same closure function.
3Loss of information
If the second piece is made observable for lock status indication, then user awareness is improved, but the device height increases interfering with stacking
Solution Approach 1:
The first piece includes a colored indicator element that changes orientation or visibility based on the locked/unlocked state. This allows lock status to be communicated through color or position without requiring the second piece to extend outward, maintaining a low profile for stacking.
Solution Approach 2:
Instead of indicating lock status through vertical extension of the second piece, the indicator uses lateral or rotational positioning. The colored indicator on the first piece provides status information in a different dimensional space, avoiding interference with stacking while maintaining visibility.
Data Source
AI summary
A box closure device having a first piece, a second piece, and a hub separating the first piece and second piece is provided. The first piece can have one or more engagement portions. The second piece can extend in both directions relative to the hub and is spaced from the first piece a selected amount allowing for box flaps to fit between the first piece and second piece. The second piece can have a blade to assist in positioning the closure device between the interior ends of two flaps. The second piece can also have a glide. In use, the user or a machine can engage the engagement portion(s) and twist the closure device so that the bottom piece is no longer aligned with a gap between the flaps thereby locking the flaps in a closed position. Sleeves and a tamper evident device can optionally be used.