Reusable Container Cap With Membrane-Piercing Dispensing
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Solution Overview
Problem
Existing caps for dispensing compounds into containers require complex operations and are designed for single use, discouraging reuse and efficient dispensing.
Innovation Solution
A cap device with a body, lid, and spacer mechanism that allows for simple, reusable dispensing by transitioning between states to dispense compounds without significant force, enabling translational and rotational movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cap is designed for single use with high separation force, then the compound is protected from tampering or contamination, but the user is discouraged from reusing the cap device
Solution Approach 1:
The cap device is divided into separable components: a body portion with a compound reservoir and a lid portion with a protrusion. These segments can be easily separated and reattached, enabling reuse while maintaining protection. The segmentation allows the cap to be opened and closed multiple times without compromising the compound's protection from tampering.
Solution Approach 2:
The cap device transitions from a static, single-use design to a dynamic, reusable system. The lid can be moved between engaged and disengaged states, and the protrusion can penetrate or remain sealed against the membrane. This dynamic behavior enables repeated opening and closing operations while maintaining protection when closed.
2Device complexity
If complex rotational and translational movements are required, then the cap structure can be simplified, but the ease of operation is reduced
Solution Approach 1:
The complex multi-step operation sequence is extracted and simplified into a single primary action. The user simply needs to push the lid downward, which simultaneously performs the opening operation. The internal mechanisms (protrusion, membrane, gate) handle the complexity internally, eliminating the need for users to perform complex rotational and translational movements.
Solution Approach 2:
The cap device performs multiple functions automatically through its internal mechanisms. When the user pushes the lid down, the protrusion automatically penetrates the membrane, the gate opens, and the compound dispenses. The system handles the complex coordination of multiple components without requiring complex user input, making the operation simple while maintaining structural efficiency.
3Strength
If significant force is required to separate lid and body, then the cap maintains secure sealing, but the ease of operation for dispensing is reduced
Solution Approach 1:
Different parts of the cap have different mechanical properties optimized for their specific functions. The membrane provides strong sealing when intact, but the protrusion is designed to easily penetrate it with minimal force. The gate mechanism is positioned to open easily when the protrusion pushes against it. This local differentiation of mechanical properties allows strong sealing during storage while enabling easy opening during dispensing.
Data Source
AI summary
A cap for accommodating a compound includes a body with an opening. The opening penetrates from an upper to a lower end portion of the body by a first length. A membrane seals a lower end portion of the opening. A lid is removably coupled and moveable relative to the body. The lid includes a protrusion extending downwardly from an interior surface of the lid by a second length greater than the first length. The opening accommodates a lower end portion of the protrusion. A spacer removably couples with the lid and interposes between the lid and the body. The spacer configurable between a first state in which the spacer is engaged with the lid, which prevents the protrusion from penetrating the membrane, and a second state in which the spacer is disengaged with the lid, which allows the protrusion of the lid to penetrate the membrane of the body.