Coupling Shell with Nested Neck Fitment to Reduce Dispensing Leakage
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Solution Overview
Problem
Existing floor treatment composition dispensing systems face issues with leakage due to large forces generated during mopping, which can lead to waste and exposure, and the membrane seal is prone to unintentional rupture during handling and storage, causing instability and leakage.
Innovation Solution
A coupling shell design with a top wall, shell wall, and neck fitment that securely engages with the container, providing a stable and leak-resistant connection, and protecting the membrane seal by recessing it relative to the top wall, allowing for upright or inverted storage and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the container is engaged with the mop using a simple connection, then the device complexity is reduced, but the reliability of the connection deteriorates due to leakage under large forces
Solution Approach 1:
The connection system is divided into multiple functional components: a coupling shell that interfaces with the mop, a container with neck fitment that holds the composition, and a membrane seal that controls dispensing. This segmentation allows each component to be optimized for its specific function while collectively providing reliable leak-resistant connection under large forces.
Solution Approach 2:
The container with neck fitment is nested within the coupling shell, creating a hierarchical structure where the inner container is securely held by the outer shell. This nested arrangement provides robust engagement that resists leakage under large forces while maintaining manageable device complexity.
2Ease of operation
If the membrane seal is exposed after application, then the ease of operation is improved for dispensing, but the reliability deteriorates due to unintentional rupture during handling and storage
Solution Approach 1:
The membrane seal is pre-positioned within the coupling shell structure during assembly, with the seal extending through the shell wall in a controlled manner. This preliminary positioning ensures the seal is ready for dispensing operation while being protected from unintentional rupture during handling and storage, as it is integrated into the rigid shell structure rather than being exposed.
3Manufacturing precision
If the container neck is narrower than the body, then the manufacturing precision is improved for fitting closures, but the stability deteriorates when stored inverted due to small footprint supporting large mass
Solution Approach 1:
The coupling shell acts as an intermediary structure that interfaces with the narrow neck of the container while providing a broader base for stable inverted storage. The shell's larger footprint distributes the weight of the elevated mass broadly, preventing tipping while maintaining the precise neck-closure fit of the container itself.
Data Source
AI summary
A coupling shell including a top wall, a shell wall, a front aperture in the top wall, a dispensing opening in the top wall, and a neck fitment projecting into the shell interior of the shell wall. The coupling shell can provide for a connection between a container and a dispensing system.