Refillable Fluid Dispenser Modular Coupling
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Solution Overview
Problem
Existing refillable fluid substance dispensing devices in the cosmetic and medical fields are often cumbersome for unskilled users to refill, as they require laborious processes.
Innovation Solution
A refillable fluid substance dispensing device design featuring a removable outer container and interchangeable inner container and pump assembly, allowing easy replacement and refilling without complex procedures, using a collar and intermediate element with various coupling mechanisms such as bayonet, magnetic, or snap-fastening systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the device uses a refillable design with removable containers, then the device can be reused and waste is reduced, but the refilling process becomes laborious and difficult for unskilled users
Solution Approach 1:
The device is divided into separate modular components: an outer container, an intermediate element, and an inner container with pump assembly. This segmentation allows the inner container to be easily removed and replaced without disassembling the entire device, making refilling simple for users while maintaining the reusable outer container structure
Solution Approach 2:
The inner container is nested within the outer container, with the intermediate element providing a coupling interface. This nested structure allows the smaller inner container to be inserted into and removed from the larger outer container easily, enabling simple refilling operations while maintaining a compact integrated appearance during use
2Reliability
If the device uses a secure coupling mechanism between containers, then the connection is reliable and leak-proof, but the assembly and disassembly process becomes more complex
Solution Approach 1:
The coupling mechanism incorporates dynamic elements such as bayonet-style quarter-turn locking, magnetic attraction, or snap-fastening features that provide automatic engagement and secure locking. These dynamic coupling mechanisms ensure reliable leak-proof connections while requiring only simple user actions for assembly and disassembly
Solution Approach 2:
The intermediate element serves as a mediator between the outer container and inner container, providing a standardized coupling interface. This intermediate component simplifies the overall assembly by concentrating the coupling complexity in a single replaceable element, ensuring reliable connections while making the overall system easier to assemble and disassemble
3Strength
If the outer container is made from high-quality materials like glass, metal, ceramic, or wood, then the device has better aesthetics and durability, but the cost of the device increases
Solution Approach 1:
The container system is segmented into an outer container and an inner container, allowing the outer container to be made from high-quality durable materials for aesthetics and longevity, while the inner container can be made from more cost-effective materials that are optimized for fluid storage and pump compatibility
Solution Approach 2:
The design allows the expensive outer container to be recovered and reused multiple times, while only the inner container and pump assembly need to be replaced when the fluid is depleted. This recovers the investment in high-quality materials over multiple refilling cycles, reducing the effective cost per use
Data Source
AI summary
A device for dispensing a fluid substance having a cup-shaped outer container of glass, metal, or wood, and featuring a bottom and side wall with a free end determining an opening in the outer container and stably secured to a collar, the device having a plastic intermediate element supporting at least one inner container and a manual pump coupled to the inner container, to deliver a substance contained therein, with removable fastening means between the collar and the intermediate element, so that, upon dispensing all fluid substance, a user can uncouple the collar from the intermediate element taking the inner container and the pump therewith, and can replace the said intermediate element, container, and pump with a new intermediate element with a pump and inner container filled with the fluid substance by re-coupling the new intermediate element, container, and pump to the collar and therefore to the outer container.