Multi-flow Plug with Tactile Rim for Visually Impaired
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Solution Overview
Problem
Existing multi-flow plugs, such as those described in PCT/ES2013000254, are not suitable for use by blind individuals as they require tilting to prevent liquid from dripping and staining, and their irregular pouring area outline prevents the use of standardized caps, leading to issues with pouring slurries where solid components are not desired to drop.
Innovation Solution
A multi-flow plug with a circular pouring area and outwardly projected rim, featuring differently sized holes with tactile identification means to facilitate orientation and control the flow of liquids and solids, ensuring no dripping or staining regardless of container orientation, and allowing for selective pouring of solid components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If U-shaped grooved paths are used to control liquid flow, then liquid flow control is improved, but the pouring area outline becomes irregular preventing use of standardized caps
Solution Approach 1:
The plug is divided into multiple functional zones: a circular pouring area with outwardly projected rim for standardized compatibility, a horizontal partition with diametrical slit for flow control, and two different-sized holes for selective pouring. This segmentation allows each zone to fulfill its specific function while maintaining overall circular geometry.
2Productivity
If grooved paths are used for multi-flow control, then different liquid flow rates are obtained, but liquid drips and stains container exterior when container is not inclined
Solution Approach 1:
The horizontal partition creates equipotential flow paths at the same elevation level, ensuring that liquid flows horizontally through the diametrical slit without dripping downward. The outwardly projected rim further seals the pouring area, preventing liquid from escaping and staining the container exterior regardless of container inclination.
Solution Approach 2:
The horizontal partition with diametrical slit acts as an intermediary element between the two holes, controlling liquid flow between them while preventing uncontrolled dripping. This intermediate structure regulates the flow path and prevents direct connection between the holes that would cause staining.
3Ease of operation
If holes are made small for controlled pouring, then liquid flow control is improved, but flow of fluid through the smaller hole is restricted
Solution Approach 1:
The plug provides dynamic flow control by allowing the user to selectively use different hole sizes based on the pouring requirements. The smaller hole (4-12 mm²) enables precise control for delicate liquids, while the larger hole allows higher flow rates for less viscous fluids. This dynamic adaptability optimizes both control and productivity.
Data Source
Figure 1~2
Figure 3
AI summary
A multi-flow cap. The invention relates to a cap (1) formed by a cylindrical body. The lower part of the cap comprises a horizontal wall (2) including a diametrical slit (3) connecting to holes of different sizes (4a, 4b) located at the ends of the horizontal wall (2), and means for securing to the container. The upper part of the cap comprises a pouring zone formed by a circular section (5) with an outwardly projecting rim (6). The lid is suitable for use by the visually impaired.