Two Half-Shell Drinking Straw Design for Accessible Interior Cleaning
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Solution Overview
Problem
Reusable drinking straws face challenges in thorough and efficient cleaning, particularly due to central sections where impurities often remain, leading to unhygienic conditions, and existing solutions are either too labor-intensive or impractical for large-scale use.
Innovation Solution
A drinking straw design featuring two half-shells connected by a hinge or weakened section that can be rotated to switch between a use position for fluid flow and a cleaning position, where the interior is fully accessible, allowing for easy mechanical cleaning without the need for additional components or complex assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a multi-part drinking straw is used to enable easy cleaning of the interior, then cleaning accessibility is improved, but assembly complexity and risk of parts loss increase
Solution Approach 1:
The wall is divided into two half-shells that can be separated from each other, allowing the interior space to be accessed for cleaning. The half-shells are connected by a joint that allows them to be moved between a use position (enclosing the interior) and a cleaning position (separated to expose the interior).
Solution Approach 2:
The two half-shells and the joint are formed as a single integrated component, eliminating the need for separate parts to be assembled. This merging of components maintains cleaning accessibility while avoiding the complexity of assembling multiple separate parts.
2Ease of operation
If cleaning brushes are inserted into the tube to clean the interior, then cleaning capability is improved, but mechanical stress on the drinking straw increases
Solution Approach 1:
By separating the wall into two movable half-shells, the interior space becomes directly accessible for cleaning without requiring insertion of cleaning brushes that would exert mechanical stress on the straw structure.
3Reliability
If a disposable plastic drinking straw is used, then hygiene is maintained, but environmental impact worsens
Solution Approach 1:
The drinking straw is designed to be reusable instead of disposable. The ability to easily separate and clean the interior space between the half-shells enables repeated use while maintaining hygiene, thereby reducing environmental impact from disposable plastic straws.
4Ease of operation
If the half-shells are moved between use position and cleaning position, then cleaning accessibility is improved, but structural complexity increases
Solution Approach 1:
The joint connecting the two half-shells allows them to be dynamically moved between a use position (enclosing the interior space) and a cleaning position (separated to expose the interior). This dynamic capability enables easy cleaning while the integrated design minimizes structural complexity.
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
Enables thorough and efficient cleaning of the entire interior, including central sections, with a simple twisting mechanism, ensuring hygiene and practicality for multiple uses, even in large quantities, while maintaining a cost-effective and user-friendly process.
Implementation Method 1
The joint, which is in particular a hinge, can be a film hinge, for example. Alternatively, the joint is also just a section of the wall that is weakened in terms of its material compared to the half-shells.
Implementation Method 2
If the wall or the joint and/or the adjoining half-shells are sufficiently elastic, the joint can also be a section connecting the two half-shells without weakening the material, so that the functionality of the joint is provided by the elasticity of the material.
Data Source
Figure 1~2
Figure 3~4b
AI summary
The invention relates to a drinking straw (1) with a wall which connects two ends (11, 12) spaced apart along a longitudinal axis (L) and encloses an interior space (10) open towards the two ends (11, 12), wherein the wall is formed from two half-shells (13, 14) and a joint (15) connecting the two half-shells (13, 14) along the longitudinal axis (L), wherein the two half-shells (13, 14) are movable between a usable position in which the interior space (10) is open exclusively towards the two ends (11, 12) and the two half-shells (13, 14) abut each other in an overlapping area (16) and enclose the interior space (10), and a cleaning position in which the interior space (10) is open on one side orthogonally to the longitudinal axis (L) and the two half-shells (13, 14) are in the The overlap area (16) should not be touching each other.