Closure Device Thread Segmentation for Glass Container Sealing
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Solution Overview
Problem
Existing closure devices for containers, particularly those made of glass, face challenges in achieving a secure and tight seal due to dimensional deviations during production, and are not easily adaptable for glass containers as they require precise dimensioning of the container opening.
Innovation Solution
A closure device design featuring a second thread on the lid element that separates from the container during unscrewing, allowing for longitudinal movement and a press seal to compensate for dimensional deviations, ensuring a secure fit and seal without relying on precise container dimensioning, and using welding or film elements for a cost-effective and fluid-tight connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closure device is designed to screw onto a container with precise dimensioning, then a secure and tight seal can be achieved, but the device becomes difficult to adapt to glass containers which have dimensional deviations during production
Solution Approach 1:
The closure device is divided into two independent threading systems: first threads connecting the chamber to the inner housing, and second threads connecting the lid element to the container. This segmentation allows each threading system to serve its specific function independently, enabling the closure device to work with containers that have dimensional variations.
Solution Approach 2:
The inner housing acts as an intermediary component between the chamber and the container. It provides a stable mounting base for the chamber while independently engaging with the container through second threads, absorbing dimensional deviations and ensuring reliable sealing.
2Ease of operation
If the lid element and container are completely separated to achieve draining position, then the medium can escape into the container, but the unscrewing process becomes more complex
Solution Approach 1:
The closure device transitions from a static closed state to a dynamic draining state through relative movement. The chamber and inner housing can move relative to each other along the threading axis, dynamically changing from a sealed configuration to a draining configuration without requiring complete disassembly.
Solution Approach 2:
The chamber is nested within the inner housing, with the inner housing providing an outer structure that contains the chamber. This nested arrangement allows the chamber to move vertically within the inner housing while maintaining structural support, simplifying the draining mechanism.
Data Source
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AI summary
The invention relates to a closure device (1) for a container (2), having a lid element (4) for closing the container opening (3), a chamber (6) which is arranged on the lid element (4) for storing a medium, and an inner housing (5). The chamber (6) and the inner housing (5) have corresponding closure means (7) and opening means (9). A discharge opening (8) paired with the chamber (6) can be released by moving the lid element (4) relative to the inner housing (5) such that a medium can exit the chamber (6) into the container (2). The chamber (6) and the inner housing (5) each have a corresponding first thread (10) which is formed relative to a winding rotational axis (18). The first winding (10) which is located on the chamber (6) is arranged so as to point radially outwards when seen from the winding rotational axis (18).