Trigger Dispenser Connection System Torque Decay
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Solution Overview
Problem
Current connection systems between dispensing heads and bottles in trigger dispensing devices experience rapid torque decay after repeated use, leading to instability and difficulty in reapplication.
Innovation Solution
A connection system featuring a main skirt with flexible tabs and an auxiliary tooth that snap-fit with the bottle neck, providing consistent torque resistance through deformation of the annular wall and resistance to rotation, maintaining torque values across multiple openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional bayonet connection systems are used, then rapid and reliable application is achieved, but torque resistance decays rapidly after repeated use
Solution Approach 1:
The connection system is divided into multiple independent tabs (first tab, second tab, third tab) that can be selectively engaged with the bottle neck. This segmentation allows the tabs to distribute the connection force and wear across multiple points, preventing rapid torque decay while maintaining quick connection capability.
Solution Approach 2:
The tabs are designed to be deflectable and dynamically adaptable to the bottle neck surface. The tabs can flex during insertion to accommodate variations in bottle neck geometry and then lock into place, providing consistent torque resistance across multiple use cycles while maintaining rapid connection.
2Reliability
If high torque resistance is provided initially, then stable connection is achieved, but ease of separation and reapplication deteriorates
Solution Approach 1:
The connection system uses multiple tabs that can be selectively engaged, allowing the user to easily disengage individual tabs for separation while maintaining connection through remaining tabs. This enables simple separation and reapplication operations without compromising overall connection stability.
Solution Approach 2:
The deflectable tabs provide a dynamic connection that can be easily manipulated for separation and reapplication. The flexibility of the tabs allows them to be deflected during separation operations, reducing the force required by the user while maintaining secure connection during normal use.
3Adaptability or versatility
If repeated separation and reapplication operations are performed, then reusable filling is enabled, but connection stability deteriorates rapidly
Solution Approach 1:
The multi-tab design allows the connection system to distribute wear across multiple independent connection points. Even after repeated separation and reapplication operations, the tabs maintain their connection capability through the bottle neck, enabling long-term reusability without rapid stability deterioration.
Solution Approach 2:
The deflectable tabs provide a dynamic connection that adapts to the bottle neck surface with each engagement. This flexibility allows the tabs to compensate for wear and deformation over multiple use cycles, maintaining connection stability throughout the product's reusable life.
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 system ensures stable torque resistance both initially and after repeated use, with experimental results showing a significant reduction in torque decay from 300 Nm to 150 Nm after five openings, compared to prior art which decays from 300 Nm to 70 Nm.
Implementation Method 1
providing consistent torque resistance through deformation of the annular wall
Implementation Method 2
resistance to rotation, maintaining torque values across multiple openings
Data Source
AI summary
A connection system between a head and a bottle of a trigger dispensing device includes a main skirt having a first flexible tab and a neck having a first sloping plane and a first pocket. The first flexible tab extends circumferentially from a first end to a second end, and the first end is joined to an annular wall by a closing wall. The system also provides for an auxiliary window obtained through the annular wall of the main skirt, and a rigid auxiliary tooth of the neck, suitable to snap into the auxiliary window.