Detachable Double-Head Marker Pen for Selective Solvent Core Replacement
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Solution Overview
Problem
Traditional double-head marker pens have non-detachable pigment solvent storage cores, leading to faster depletion of solvent in one end, necessitating replacement of the entire pen, increasing use cost and waste.
Innovation Solution
A detachable design with connecting tubes allows for independent penholders, enabling replacement of exhausted solvent containers while reusing pen tips, facilitated by slidable connections and stopper rings for stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pigment solvent storage cotton core is sealed inside the penholder and non-detachable, then the pen structure is simple and reliable, but when one end's solvent is used up, the entire pen must be replaced, increasing cost and waste
Solution Approach 1:
The penholder is divided into two detachable parts: a first penholder and a second penholder, connected by a connecting tube. This segmentation allows independent replacement of each penholder section, enabling users to replace only the exhausted end while retaining the other functional end, thereby reducing waste and cost while maintaining structural reliability through the connecting tube connection.
2Device complexity
If the pigment solvent storage cotton core is non-detachable, then the pen structure is simpler, but the usability is reduced when one end's solvent is depleted
Solution Approach 1:
The penholder is segmented into detachable first and second penholders connected by a connecting tube, allowing independent replacement of exhausted sections. This maintains relatively simple structure while dramatically improving usability by enabling selective replacement of only the depleted end rather than the entire pen.
Solution Approach 2:
The connecting tube provides a dynamic connection that allows the penholder sections to be easily attached and detached. This dynamic design enables flexible replacement operations, improving ease of operation while maintaining structural integrity during use.
3Adaptability or versatility
If a detachable design with connecting tubes is used, then penholder replacement is enabled, but the device complexity increases
Solution Approach 1:
The pen is segmented into modular components (first penholder, second penholder, connecting tube) that can be independently replaced. This segmentation achieves high adaptability and versatility for different usage scenarios while keeping each individual component simple in structure.
Solution Approach 2:
The connecting tube serves multiple functions: it connects the two penholder sections, provides a sealing interface, and enables the detachable replacement mechanism. This multi-functionality reduces the need for additional complex components, achieving versatility without excessive 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
Enhances pen tip utilization, reduces costs, promotes resource recycling, and improves user comfort and convenience through detachable and slidable connections.
Implementation Method 1
a middle part of the closure is mounted with an elastic sealing part
Implementation Method 2
pigment solvent suction rods of the pointed pen tip and the flat pen tip are inserted into the pigment solvent storage cotton core respectively from two pen head ends. When in use, the pigment solvent suction rods of the pointed pen tip and the flat pen tip respectively suck the pigment solvent
Data Source
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AI summary
The present application discloses the double-head marker pen, and relates to the field of marker pen production technology, including a first penholder, a second penholder and a connecting tube ; one end of the first penholder is formed with a first pen head, and one end of the second penholder is formed with a second pen head; and an end of the first penholder away from the first pen head is detachably connected with an end of the second penholder away from the second pen head by the connecting tube.