Container Closure Interlock Design for Efficient Emptying
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Solution Overview
Problem
Existing closure devices for containers lack cost-efficient manufacturing and convenient handling, and they do not effectively manage the interlock between the chamber and the inner housing, which affects the efficient emptying of the chamber.
Innovation Solution
The closure device features a novel interlock design where the interlock is separate from the shoulder section of the inner housing, and the chamber is composed of two parts welded together in the partition plane using a supplementary section produced by overmoulding. This design allows for a cost-efficient and convenient assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the chamber is composed of two parts welded together in the partition plane, then the assembly and manufacturing process becomes more cost-effective, but the structural complexity increases
Solution Approach 1:
The chamber is divided into two separate parts (first part and second part) that are welded together at the partition plane. This segmentation allows for easier manufacturing and assembly of the chamber components, enabling cost-effective production while maintaining structural integrity through the welded joint.
2Productivity
If the interlock is separate from the shoulder section of the inner housing, then the efficiency of emptying the chamber is enhanced, but the device complexity increases
Solution Approach 1:
The interlock mechanism is extracted and separated from the shoulder section of the inner housing, creating an independent functional element. This separation allows the interlock to operate independently, enhancing the efficiency of chamber emptying by enabling more effective interaction between the lid element and chamber during the emptying process.
Solution Approach 2:
The interlock acts as an intermediary mechanism between the lid element and the chamber. By being separate from the shoulder section, it mediates the interaction during chamber emptying, facilitating more efficient material discharge while maintaining the structural integrity of the inner housing.
3Ease of manufacture
If the supplementary section is produced by overmoulding, then the manufacturing cost is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The supplementary section is produced by overmoulding, which merges the supplementary material with the existing chamber parts in a single integrated structure. This combining process reduces manufacturing costs by eliminating separate assembly steps while requiring precise control of the overmoulding process to ensure proper integration and dimensional accuracy.
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 proposed design enhances the efficiency of emptying the chamber when the lid element is removed, while also improving the assembly and manufacturing process, resulting in a more cost-effective and user-friendly closure device.
Implementation Method 1
the welded joint is produced by means of a supplementary section that is connected to both parts and produced by overmoulding
Data Source
AI summary
A closure device for a container with a container opening has a lid element for closing the container opening, a chamber assigned to the lid element and an inner housing. The chamber and the inner housing have closing and opening elements that correspond to one another. The chamber locks with the inner housing, the lock with the inner housing being offset radially inwards in respect of a vertical of the closure device over a greatest width of the chamber in the offset direction. In order to specify a closure device which allows emptying of the chamber as the lid element is removed in an easy-to-handle fashion, with further preferred favorable manufacturability of the closure device, the lock in the vertical direction is designed separately from a shoulder section of the inner housing formed on the base side under the lock.