Dual Cosmetic Pump Applicator for Tilt-Free Ratio Dispensing
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Solution Overview
Problem
Conventional cosmetic dispensing devices fail to maintain a proper ratio of multiple cosmetic products due to tilting of the actuating button, leading to imbalanced dispensing of different cosmetic products.
Innovation Solution
A device with parallel triggering axes for each pump, a movable nozzle biased to a resting position, and a specially designed applicator with a pressing plate and stem portion that ensures parallel movement without tilting, allowing for precise dosage ratios through a translational mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional button is used to simultaneously actuate multiple pumps, then the device can dispense multiple cosmetic products, but the button tilts when pressed causing imbalanced dispensing ratios
Solution Approach 1:
The applicator is divided into functionally distinct components: a pressing plate for user input, a stem portion for force transmission, and a base plate for actuation. This segmentation allows each component to perform its specific function optimally while preventing tilting and ensuring balanced force distribution to multiple pumps.
Solution Approach 2:
The stem portion acts as an intermediary element between the pressing plate and the base plate, transmitting force while maintaining parallel alignment. This intermediary structure prevents direct tilting transmission to the pumps, ensuring that pressing force is evenly distributed to all pumps regardless of user pressing position.
2Ease of operation
If the pressing plate has a large area to ease operation, then user effort is reduced, but tilting becomes more pronounced affecting dispensing precision
Solution Approach 1:
The stem portion serves as a force transmission intermediary that decouples the pressing plate's large area from the pump actuation points. It transmits pressing force while maintaining parallel alignment, allowing the pressing plate to be large for ease of operation without causing tilting or imbalanced dispensing ratios.
Solution Approach 2:
The base plate is designed with localized actuation zones corresponding to each pump's triggering mechanism. This local quality design ensures that force is applied precisely where needed while the larger pressing plate area provides ease of operation without affecting dispensing precision.
3Device complexity
If pumps are triggered by a single button mechanism, then the device structure is simplified, but the tilt-induced imbalance complicates the dispensing ratio control
Solution Approach 1:
The actuation mechanism is segmented into a pressing plate, stem portion, and base plate with multiple triggering zones. This segmentation maintains structural simplicity while enabling precise control over force distribution to multiple pumps, preventing tilt-induced imbalance in dispensing ratios.
Solution Approach 2:
The stem portion acts as an intermediary force transmission element that simplifies the overall mechanism while ensuring balanced force distribution. It connects the single pressing action to multiple pump triggering points without introducing complexity, maintaining both structural simplicity and dispensing precision.
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
Ensures accurate and easy dispensing of multiple cosmetic products in the desired ratio without requiring excessive user effort, preventing tilting and maintaining balance during product dispensing.
Implementation Method 1
a nozzle (13) movably arranged relative to the main body (18) and biased towards a resting position relative to the main body (18) by a biasing means
Data Source
AI summary
A device for storing and dispensing at least two cosmetic products comprises: a main body defining a first reservoir and a second reservoir; a first pump configured to be triggered along a first triggering axis; a second pump configured to be triggered along a second triggering axis parallel to the first triggering axis; a nozzle movably arranged relative to the main body and; and an applicator operable to move the nozzle relative to the main body parallel to the first triggering axis and the second triggering axis, from a resting position into a discharging position; wherein the applicator comprises: a pressing plate configured to be pressed by a user; a base plate configured for pushing the nozzle; and a stem portion fixed on one end to the pressing plate at a central region of the pressing plate, and fixed on the other end to the base plate, the stem portion extends in parallel to the first triggering axis and the second triggering axis; wherein the projected area of the pressing plate in a projection plane perpendicular to the first triggering axis and the second triggering axis is 20%-50% of the projected area of the base plate in the projection plane.