Squeeze Bottle Dispenser Axial Sleeve Safety Mechanism
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Solution Overview
Problem
Squeeze bottle dispensers for pharmaceutical liquids lack effective child safety mechanisms to prevent inadvertent actuation and discharge, particularly by children.
Innovation Solution
A squeeze bottle dispenser with a protective sleeve that is axially displaceable between a protection position and a release position, where in the protection position it prevents compression and discharge, and in the release position allows for liquid discharge, featuring a guide ring or sleeve for guided displacement and a latching mechanism for enhanced safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective sleeve is added to prevent child access, then safety against inadvertent actuation is improved, but device complexity increases
Solution Approach 1:
The protective sleeve is inserted into the discharge head, forming a nested structure where the sleeve is contained within the existing dispenser housing. This nesting approach adds the safety function without requiring a completely separate external mechanism, thereby limiting the increase in overall device complexity while maintaining protective functionality.
Solution Approach 2:
The protective sleeve is designed to be displaceable between a protected position (blocking the discharge opening) and a release position (allowing discharge). This dynamic element allows the safety mechanism to transition between states based on user action, providing both safety and functionality without requiring multiple static components.
2Reliability
If the protective sleeve is made rigid to prevent compression, then safety is improved, but ease of operation deteriorates
Solution Approach 1:
The protective sleeve transitions from a rigid protective state to a flexible operable state. When the user applies force to displace the sleeve, it temporarily yields to allow access to the squeeze bottle, then returns to its rigid protective position. This dynamic behavior resolves the contradiction between rigidity for safety and flexibility for operation.
Solution Approach 2:
The protective sleeve is positioned to preemptively block access to the squeeze bottle before any inadvertent actuation can occur. The sleeve's preliminary protective action prevents unintended compression while still allowing intentional displacement when needed, balancing safety and operability.
3Reliability
If the protective sleeve completely blocks access to the liquid reservoir, then safety against child access is improved, but ease of operation deteriorates
Solution Approach 1:
The protective sleeve is designed as a displaceable barrier rather than a permanent block. Children cannot inadvertently activate the dispenser because the sleeve remains in the protected position, but adults can easily operate it by applying sufficient force to displace the sleeve to the release position, ensuring both safety and ease of operation.
Solution Approach 2:
The discharge head is divided into functionally separate regions: the protected discharge opening area blocked by the sleeve, and the accessible actuation area where force can be applied to displace the sleeve. This segmentation allows the sleeve to block liquid discharge while still permitting user interaction with the squeeze bottle.
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 design significantly reduces the risk of inadvertent actuation, ensuring the liquid reservoir can only be compressed and discharged when the protective sleeve is intentionally moved to the release position, providing a high level of security against accidental dispensing.
Implementation Method 1
In the protection position, the protective sleeve is arranged relative to the liquid reservoir such that it either completely prevents a compression of the liquid reservoir or at least impedes this to a large degree by covering the access to the outer wall of the liquid reservoir. The discharge of liquid is prevented thereby.
Implementation Method 2
a dimensionally stable liquid reservoir, the walls thereof being able to be at least partially depressed in a resilient manner so that pressure can be applied thereby to the liquid in the liquid reservoir. The reduction in volume of the liquid reservoir caused by the actuation and the increase in pressure associated therewith cause liquid to be forced into a discharge head
Data Source
AI summary
A squeeze bottle dispenser having a squeezable liquid reservoir, and a discharge head with a discharge opening. The squeeze bottle dispenser has a protective sleeve captively connected to the liquid reservoir and which, with respect to a main axis, is displaceable relative to the liquid reservoir between a protection position and a release position. In the protection position, the protective sleeve prevents or impedes manual application of force to the liquid reservoir and therefore the discharge of liquid. In the release position, the protective sleeve does not prevent or impede manual application of force to the liquid reservoir and thus permits the discharge of liquid.