Fluid Dispenser Blocking Mechanism
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Solution Overview
Problem
Existing fluid dispenser devices face challenges in preventing accidental or undesired actuation during transport or storage, leading to potential fluid loss and increased manufacturing costs due to complex and costly blocking systems.
Innovation Solution
A fluid dispenser device with a dispenser member that is manually displacable from a blocking position to a release position, using the dispenser member itself as the blocking element, eliminating the need for additional parts and allowing only intentional actuation by the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional blocking parts (pull-off strips, tabs) are added to prevent accidental actuation, then reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the blocking function with the existing dispenser member by providing it with a blocking portion that extends into the actuator element's path. This integration eliminates the need for separate blocking parts while maintaining reliable prevention of accidental actuation.
Solution Approach 2:
The dispenser member is given multiple functions: it serves both as the mechanism for dispensing fluid and as the blocking element to prevent accidental actuation. This multi-functionality reduces the total number of parts required in the device.
2Reliability
If additional blocking parts are added to prevent accidental actuation, then reliability is improved, but manufacturing and assembly cost increase
Solution Approach 1:
By combining the blocking function with the dispenser member, the patent eliminates the need for separate blocking parts, thereby reducing manufacturing steps and assembly operations. This integration directly lowers manufacturing and assembly costs while maintaining reliable accidental actuation prevention.
3Ease of operation
If the dispenser member is made displaceable for intentional actuation, then ease of operation is improved, but risk of accidental actuation increases
Solution Approach 1:
The blocking portion of the dispenser member preliminarily prevents the actuator element from being actuated by extending into its path. This preliminary anti-action ensures that even though the dispenser member is displaceable for intentional use, accidental actuation is prevented until the user deliberately displaces the dispenser member to the release position.
Data Source
AI summary
A fluid dispenser device, comprising: a dispenser orifice (5); a reservoir (10) containing at least one dose of fluid; at least one piston (15) axially slidable in said reservoir (10) so as to dispense said fluid; a dispenser member (20) co-operating with said piston (15); and an actuator element (30) co-operating with said dispenser member (20); said device being characterized in that said dispenser member (20) is displaceable between a blocking position, preventing said actuator element (30) from being actuated, and a release position in which the actuation of said actuator element (30) displaces said dispenser member (20) so as to dispense a dose of fluid, said dispenser member (20) being displaced manually from its blocking position to its release position before said device is actuated.