Fluid Dispensing Assembly Piercing Member Dynamics
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Solution Overview
Problem
Existing dispensing systems for collapsible fluid containers often require external tools or unintentional piercing, leading to accidental fluid release, and pre-weakening methods pose similar risks.
Innovation Solution
A fluid dispensing assembly with a sliding piercing member integrated into a manifold and nozzle configuration, allowing controlled piercing engagement with collapsible containers without external tools or pre-weakening, minimizing accidental piercing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a piercing device is provided in a cartridge that holds a collapsible container and pressure is applied to pierce the container, then the container can be pierced without external tools, but unintentional application of pressure can cause accidental piercing
Solution Approach 1:
The piercing member is designed to move between retracted and extended positions dynamically. It remains retracted during normal handling and only extends when the nozzle is properly attached to the manifold, at which point the piercing action occurs automatically. This dynamic positioning prevents accidental piercing while enabling easy operation when needed.
Solution Approach 2:
The nozzle acts as an intermediary mechanism that mediates between the user's attachment action and the piercing function. When the nozzle is attached to the manifold, it engages the piercing member to extend it into the container. This intermediary step ensures that piercing only occurs when the nozzle is properly installed, preventing accidental piercing during transport or storage.
2Ease of operation
If a piercing device is attached to mixing elements of a nozzle and the nozzle is rotated to pierce the container, then the container can be pierced without external tools, but unintentional rotation of the nozzle may cause accidental piercing
Solution Approach 1:
The piercing member transitions from a retracted to an extended state dynamically when the nozzle is rotated into the correct position and attached to the manifold. The rotation itself triggers the piercing action through engagement between the nozzle and piercing member, eliminating the need for separate rotation and piercing steps while preventing accidental activation during improper handling.
3Ease of operation
If an actuating rod extends outside the housing and a user engages it to move the piercing device, then the piercing action can be controlled, but unintentional movement of the actuating rod may cause accidental piercing
Solution Approach 1:
The actuating mechanism is extracted from the housing and integrated into the nozzle itself. The nozzle's attachment to the manifold directly drives the piercing member, eliminating the need for a separate actuating rod that extends outside the housing. This integration ensures that piercing control is inherent to the nozzle attachment action, preventing unintentional activation.
4Ease of manufacture
If a knife or screwdriver is used to cut or pierce the container end, then the membrane can be broken to access fluid contents, but external tools are required in addition to dispenser components
Solution Approach 1:
The piercing function is merged with the nozzle and manifold assembly. The piercing member is an integral component of the dispensing system, combined with the fluid delivery pathway. This consolidation eliminates the need for separate external tools like knives or screwdrivers, reducing the total number of components while maintaining effective piercing capability.
Solution Approach 2:
The nozzle serves multiple functions: it delivers fluid from the container and simultaneously acts as the actuating mechanism for the piercing member. When attached to the manifold, the nozzle performs both the sealing/attachment function and triggers the piercing action, demonstrating multi-functionality that reduces overall system complexity.
Data Source
AI summary
A fluid dispensing assembly is adapted to dispense fluid from a container. The fluid dispensing assembly includes a manifold configured for receiving the container, a piercing member slidably coupled with the manifold, and a nozzle configured to be attached with the manifold, and to engage the piercing member and move the piercing member into piercing engagement with the container.