Valve-Free Felt Pen Nib With Micro-Relief Baffle
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Solution Overview
Problem
Existing free ink writing felt pens require complex baffles or valves to manage ink flow and air balance, making them less reliable and more difficult to manufacture, while also risking ink leakage.
Innovation Solution
A valve-free design where the nib acts as a baffle, incorporating micro-reliefs and varying diameters to allow ink flow without leakage and maintain air balance, eliminating the need for traditional baffles or air holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional baffles or valves are used to manage ink flow and air balance, then ink leakage is avoided and air balance is maintained, but the device complexity increases and manufacturing becomes more difficult
Solution Approach 1:
The nib is designed to perform multiple functions simultaneously: it delivers ink to the writing support while its external surface acts as a baffle to prevent ink leakage and maintain air balance. This merging of functions eliminates the need for separate baffle components or valves, reducing device complexity while maintaining reliability
Solution Approach 2:
The nib's external surface is designed with micro-reliefs that enable it to function as both an ink delivery mechanism and an air balance control mechanism. This multi-functional design allows a single component to replace what would traditionally require multiple separate parts, simplifying the overall device structure
2Reliability
If traditional baffles or valves are used to manage ink flow and air balance, then ink leakage is avoided and air balance is maintained, but the manufacturing process becomes more complex and time-consuming
Solution Approach 1:
The nib integrates the baffle function into its own structure through micro-reliefs on its external surface, eliminating the need for separate baffle components. This reduces the number of parts that need to be manufactured and assembled, thereby simplifying the manufacturing process while ensuring reliable ink leakage prevention
Solution Approach 2:
The nib's external surface with micro-reliefs automatically performs the baffle function without requiring additional components or complex assembly steps. The structure serves itself by incorporating the air balance control capability directly into the ink delivery component, making manufacturing more straightforward
3Reliability
If the nib acts as a baffle with micro-reliefs to allow air exchange, then air balance is maintained and ink leakage is prevented, but the manufacturing precision requirements increase
Solution Approach 1:
The nib's external surface incorporates micro-reliefs that create a porous-like structure for air exchange. This approach allows air to pass through while blocking ink, achieving reliable air balance maintenance. The micro-relief structure can be manufactured using standard molding techniques, balancing the need for precision with manufacturability
4Reliability
If the nib acts as a baffle to prevent ink leakage, then ink flow control is improved, but the device complexity increases due to the need for precise nib-receiving part cooperation
Solution Approach 1:
The nib's external surface with micro-reliefs integrates the ink flow control function directly into the nib structure. When inserted into the nib receiving part, this integrated structure prevents ink leakage without requiring the receiving part to have complex internal features, thus improving ink flow control while minimizing the increase in overall device 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
This design enhances the reliability and simplicity of production by ensuring consistent ink flow and air balance, reducing the risk of leakage and eliminating the need for air holes in the writing instrument.
Implementation Method 1
the plurality of spaces may be configured to act as baffle, i.e. the plurality of spaces may allow the free ink to flow from the free ink tank without leaking and air exchange to ensure air balance between the inside of free ink tank and the atmosphere outside the free ink tank
Implementation Method 2
the external surface being configured to allow intake of air from the outside of a free ink tank of the valve-free free ink writing felt pen into the free ink tank
Implementation Method 3
the external surface being configured to allow intake of air from the outside of a free ink tank of the valve-free free ink writing felt pen into the free ink tank and avoid ink leakage outside the free ink tank when cooperating with the internal surface of the nib receiving part
Data Source
AI summary
A nib for a valve-free free ink writing felt pen including a first end configured to deliver ink to a writing support and second end, opposite the first end, configured to be inserted in a nib receiving part of the valve-free free ink writing felt pen, the first end and the second end defining an axial direction of the nib, the nib having an external surface configured to cooperate with an internal surface of the nib receiving part, the external surface being configured to allow intake of air from the outside of a free ink tank, the valve-free free ink writing felt pen into the free ink tank and avoid ink leakage outside the free ink tank when cooperating with the internal surface of the nib receiving part. A valve-free free ink writing felt pen including a nib.