Box Flap Fastener Structure for Easier Insertion and Rotation
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Solution Overview
Problem
Existing fasteners for fixing double-door type flaps of cardboard boxes are inconvenient due to difficulties in inserting the second flap while closing and rotating the upper presser, especially with flat plate-shaped designs.
Innovation Solution
A fastener comprising a receiving part, a pressing part, and a linking part with curvable or bendable tab parts that facilitate easier insertion and rotation, along with a cutter part for cutting tape, allowing for secure closure and easy unpacking without additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper presser has a flat plate shape to secure the flaps, then the fixation reliability is improved, but the ease of operation deteriorates due to difficulty in rotating while holding
Solution Approach 1:
The pressing part is designed with a rod shape instead of a flat plate shape, enabling easy rotation while maintaining effective pressing area through its circular cross-section that contacts the flaps
2Reliability
If the fastener is designed to insert both flaps in insertion areas to secure closure, then the fixation reliability is improved, but the ease of operation deteriorates due to difficulty in inserting the other flap while closing both flaps
Solution Approach 1:
The fastener is divided into a receiving part and a pressing part that can move relative to each other, allowing the pressing part to be inserted first through the flap juncture, then the flaps to be separately inserted into the insertion areas between the two parts
3Stability of the object's composition
If the tab parts are made rigid to maintain structural stability, then the stability of the object's composition is improved, but the ease of operation deteriorates due to inability to curve or bend for finger gripping
Solution Approach 1:
The tab parts are designed with curvable or bendable properties, allowing them to be turned up for finger gripping during operation, while returning to their original position to maintain structural stability during fixation
Data Source
AI summary
A fastener for fixing a pair of opposing flaps of a box in a closed state includes a receiving part extending along a first direction, with a flap abutting part configured to abut surfaces of the flaps being arranged on at least one side of the receiving part, the flap abutting part constituting a tab part for which at least a portion is curvable or bendable upward, a linking part having a rod shape and extending from a center portion of the receiving part, and a pressing part having a rod shaped that extends outwardly from an end of the linking part along the first direction, the pressing part being configured to be inserted into a gap at a juncture of the flaps so that spaces on both sides of the linking part between the receiving part and the pressing part constitute insertion areas into which the flaps are inserted.