Trigger Dispensing Head With Movable Nozzle Actuation Lock
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Solution Overview
Problem
Existing trigger dispensing devices face issues with unintentional actuation during transport and require a reduction in component count, complexity, and cost while maintaining functionality and user intuitiveness.
Innovation Solution
A dispensing head with a nozzle that can be moved between opening and closing positions to prevent unintentional trigger actuation, featuring a locking system with a locking member and interference elements to ensure the trigger remains inactive in the closed position, using a limited number of integrated components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking system is added to prevent unintentional trigger actuation, then reliability is improved, but device complexity increases
Solution Approach 1:
The locking member is integrated into the trigger assembly, and the interference elements are incorporated into the nozzle structure, merging the locking function with existing components rather than adding entirely separate locking mechanisms. This reduces overall device complexity while maintaining reliability.
Solution Approach 2:
The locking system uses a movable locking member that can transition between engaged and disengaged states, rather than a fixed locking mechanism. This dynamic approach allows the system to adapt between locked and unlocked states without requiring complex control systems, resolving the contradiction between reliability and simplicity.
2Reliability
If the nozzle is made movable between opening and closing positions, then reliability is improved, but device complexity increases
Solution Approach 1:
The movable nozzle is integrated with the locking member, combining the product flow control function with the safety locking function into a single structural component. This merger reduces the number of separate parts while achieving both reliability and structural simplicity.
Solution Approach 2:
The nozzle serves dual functions: controlling product flow and providing the locking interface through its interference elements. This multi-functionality reduces the need for separate components, thereby reducing device complexity while maintaining reliability.
3Ease of manufacture
If integrated components are used to reduce component count, then manufacturing cost is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The locking member and nozzle are integrated into fewer components, which can be manufactured using injection molding or similar processes. While this requires precise feature integration, modern manufacturing techniques can achieve the required precision at scale, balancing manufacturing cost and precision requirements.
Data Source
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AI summary
A dispensing head (8) with a trigger (10) for a dispensing device (1) comprising a frame (12), a piston chamber (16), a piston (18), a dispensing duct (22), a suction duct (34), pre-compression valve means, suction valve means, a locking member (19) and a nozzle (50), which comprises a gripping wall equipped with an actuation compartment (53) and an interference element (95). The nozzle (50) is movable between an opening position, wherein the locking member (19) is freely movable in the actuation compartment (53), and a closing position, wherein the locking member (19) engages the interference element (95), preventing the actuation stroke of the trigger (10).