Synthetic Resin Container Lid Extending Portion Opening Position
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Solution Overview
Problem
Conventional container closures with short axial lengths face issues where the protruding piece may accidentally return below the engaging jaw, and the sound generated upon unsealing is unsatisfactory, making it difficult to maintain the opening position and ensure consumer recognition.
Innovation Solution
The container closure features an extending portion on the engaging pieces positioned between the engaging jaw and tamper evident skirt, which prevents accidental return and generates a recognizable sound when the protruding piece passes over, ensuring reliable maintenance of the opening position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the container closure has a short axial length, then the closure is more compact and easier to manufacture, but the protruding piece may accidentally return below the engaging jaw and the sound generated is unsatisfactory
Solution Approach 1:
The invention extends the engaging piece in the radial direction (outward from the central axis) to create an extending portion that positions itself between the engaging jaw and the protruding piece. This radial extension compensates for the short axial length by utilizing a different spatial dimension to ensure the protruding piece cannot accidentally return below the engaging jaw, while also providing a sufficient surface area to generate an audible sound upon contact.
2Ease of operation
If the protruding piece has insufficient interference with the engaging jaw, then the closure is easier to operate, but the body may not be kept at the required opening position
Solution Approach 1:
The extending portion of the engaging piece acts as an intermediary element between the engaging jaw and the protruding piece. It provides a controlled interference surface that the protruding piece must pass during normal opening operations, ensuring the body is held at the required opening position without preventing legitimate opening actions. The extending portion mediates between the need for easy operation and the need for reliable position maintenance.
3Object-affected harmful factors
If the sound generated upon unsealing is too weak, then the closure is quieter and less disruptive, but consumers cannot recognize that the body has been pivoted to the required opening position
Solution Approach 1:
The invention modifies the geometric parameters of the engaging piece by adding an extending portion with specific dimensions and surface area. This parameter change increases the contact area between the engaging piece and the protruding piece during the opening operation, thereby amplifying the sound generated. The extending portion is designed with optimal dimensions to produce a recognizable audible signal that informs consumers the container has been properly opened, without being excessively noisy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The extending portion ensures the container closure remains in the required opening position and produces a distinct sound for consumer verification, even with a short axial length, preventing accidental closure and enhancing user feedback.
Implementation Method 1
the protruding piece passes elastically over the engaging jaw portion so as to be positioned above the upper surface of the engaging jaw portion. This serves to inhibit the body from returning in the direction to approach the mouth-and-neck portion, and thus, the body is held at a position distanced from the mouth-and-neck portion to keep the mouth-and-neck portion in an unsealed state. When the tip end of the protruding piece passes elastically over the engaging jaw portion, the protruding piece is deformed elastically, and then, it restores elastically to generate a sound.
Data Source
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AI summary
A container closure of synthetic resin is used for a container having a mouth-and-neck portion formed with an external thread on its outer periphery and an engaging jaw portion positioned below the external thread. The closure including a body and a tamper evident skirt portion is not entirely separated from the mouth-and-neck portion of the container even after unsealing the container at the mouth-and-neck portion. The container closure is improved such that the body is held sufficiently reliably at a required opening position when the body detached from the mouth-and-neck portion is pivoted to the opening position even if the container closure has a relatively short axial length. Furthermore, when the body is pivoted again to the opening position, a sound recognizable for a consumer is generated with sufficient certainty. At least in an angle region in which a protruding piece formed on the skirt wall of the body is present, an extending portion is formed at an engaging piece formed on the tamper evident skirt portion. In a state where the container closure of synthetic resin is mounted on the mouth-and-neck portion, the extending portion is positioned between the engaging jaw portion of the mouth-and-neck portion and the tamper evident skirt portion.