Bidose Fluid Dispenser Energy Storage for Stable Actuation
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Solution Overview
Problem
Existing bidose fluid dispensing devices face issues with energy storage mechanism damage during assembly and actuation, leading to variability in actuation force and spray properties, which affects repeatability and stability of dose delivery.
Innovation Solution
A fluid product distribution device with energy accumulation means featuring first and second thrust elements and resistance elements, including radially deformable tabs, ensures that these elements do not come into contact during assembly and the first dose, allowing for predefined actuation forces and consistent spray properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If energy storage means are included in bidose devices to ensure full dose delivery and prevent accidental activation, then dose delivery reliability is improved, but the risk of damaging energy storage means during assembly and actuation increases, leading to variability in actuation force and spray properties
Solution Approach 1:
The energy storage means are segmented into two independent systems: a first energy storage means (first spring element and first thrust element) for the first dose, and a second energy storage means (second spring element and second thrust element) for the second dose. This segmentation isolates the energy storage functions, preventing cross-interference and damage between the two doses during assembly and actuation, thereby maintaining reliable dose delivery while reducing damage risk.
2Ease of manufacture
If energy storage means are subjected to shocks during assembly, then assembly process simplicity is improved, but actuation force variability increases, affecting spray property consistency
Solution Approach 1:
The thrust elements are designed with specific geometric features (inclined surfaces) that guide the resistance elements into their correct positions during assembly before the energy storage means are fully engaged. This preliminary guiding action prevents misalignment and shock damage during assembly, ensuring consistent actuation force and spray properties while maintaining assembly simplicity.
3Productivity
If the first energy storage means is activated during the first dose distribution, then first dose delivery is achieved, but the second energy storage means may be damaged by shocks, compromising the second dose
Solution Approach 1:
The energy storage means are segmented into two independent systems with separate activation pathways. The first energy storage means is positioned and configured to be activated only by the actuating member during the first dose, while the second energy storage means remains isolated and protected. This segmentation ensures that activation of the first dose does not transmit shocks to the second energy storage means, preserving the integrity of the second dose while maintaining efficient first dose delivery.
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 solution maintains energy storage integrity, reduces actuation effort variability, and enhances the repeatability and stability of dose delivery, while being simple and cost-effective to manufacture.
Implementation Method 1
a return spring being provided to return said actuating member to its starting position after each actuation
Implementation Method 2
energy accumulation means including first and second thrust elements formed on said central body and first and second resistance elements formed on said support member, said first thrust element being adapted to cooperate with said first resistance element to accumulate energy during the distribution of the first dose, and said second thrust element being adapted to cooperate with said second resistance element to accumulate energy during the distribution of the second dose
Data Source
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AI summary
The invention relates to a device comprising a reservoir (10) containing two doses of fluid product; a dispensing member (20) that slides in said reservoir (10) for dispensing the fluid product; a main body (30); a central body (90); a support member (50) that accommodates said reservoir (10); a dispensing head (40); and an actuating member (60) that is axially displaceable within said main body (30) and engages with said support member (50) to carry out successive actuations of the device. Said device comprises energy storage means comprising first and second pushing elements (33, 33'; 93, 93') formed on said central body (90), and first and second resistance elements (53, 53') formed on said support member (50), said first pushing element (33; 93) being suitable for engaging with said first resistance element (53) in order to store energy during the dispensing of the first dose, and said second pushing element (33'; 93') being suitable for engaging with said second resistance element (53') in order to store energy during the dispensing of the second dose. Said energy storage means are produced such that the active parts of each pushing element do not make any contact with the support member during assembly, and the active part of the second pushing element does not make any contact with the support member during the dispensing of the first dose.