Refill Container Pouring Spout Flange Design for Accurate Nozzle Insertion
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Solution Overview
Problem
The existing pouring spouts with flange parts often cause the refill container to tilt when trying to insert the nozzle of a packaging container, leading to spills due to uneven finger pressure on the flange, which makes accurate insertion difficult.
Innovation Solution
The design features both end portions of the flange part jutting slightly outward from the center, allowing for balanced finger pressure and preventing tilting, with a bonded part that tapers outward and has an arcuate shape to secure the nozzle's insertion, and an outer shape that can be circular, elliptical, or polygonal for versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flange part juts significantly outward from the center side of the pouring spout, then it facilitates pressing of the spout by fingertips, but the refill container tilts and the nozzle cannot be accurately inserted into the pouring spout
Solution Approach 1:
The flange part is designed with non-uniform extension: both end portions jut slightly outward from an area facing the peripheral wall part, creating localized finger placement zones. This local quality modification allows fingers to be positioned symmetrically on both sides of the tubular part, distributing pressing forces evenly while preventing container tilt, thus resolving the contradiction between ease of operation and insertion accuracy.
2Ease of operation
If the flange part is pressed by fingertips, then the spout can be pressed downward, but uneven finger pressure causes the refill container to tilt
Solution Approach 1:
The flange part employs controlled asymmetry in its design: while the overall structure is symmetric, the specific configuration of end portions jutting outward from the area facing the peripheral wall part creates asymmetric finger placement zones relative to the container body. This allows fingers to be positioned at optimal locations on both sides of the tubular part, ensuring symmetric force application that maintains container stability during operation.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
To provide a pouring spout that allows a nozzle of a packaging container to be accurately inserted into a pouring spout of a refill container. The above-described problem is solved by a pouring spout (10) provided to a refill container (1) for pouring contents into a packaging container, and for pouring out the contents stored in the refill container (1). The pouring spout (10) comprises at least a bonded part (11) bonded to a pouch main body part of the refill container, a tubular part (12) for pouring out the contents, a flange part (13) jutting outward at a boundary between the bonded part (11) and the tubular part (12), a channel (14) for passing the contents from an inside to an outside of the refill container, and a closing member (20) for opening and closing the channel (14). Both end portions of the flange part (13) separated farthest in a horizontal direction jut slightly outward from an area facing a peripheral wall part of the pouring unit constituting the packaging container.