Marking Instrument With Movable Core for Tip Rigidity
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Solution Overview
Problem
Users need multiple writing tools with different tip rigidities to achieve various artistic effects, which is inconvenient and costly, with no single product offering adjustable rigidity for precise control and ink coverage.
Innovation Solution
A marking instrument with a tip reinforcing system that allows adjustment of tip rigidity through a movable core within a cavity, using a core moving mechanism to change the exposure of the tip reinforcing core, providing adjustable hardness for precision and ink coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a harder tip is used, then drawing precision is improved, but ink coverage capability deteriorates
Solution Approach 1:
The patent implements a movable core mechanism that allows the user to dynamically adjust the tip's rigidity. The core can be positioned at different locations within the tip structure, enabling transition between hard (precise) and soft (coverage-oriented) states. This dynamic adjustment resolves the contradiction by allowing the same tip to adapt its properties based on the desired function.
Solution Approach 2:
The invention changes the physical parameter of tip rigidity by moving the reinforcing core to different positions. When the core is positioned toward the tip edge, the tip becomes harder for precision work; when retracted, the tip becomes softer for broader coverage. This parameter adjustment allows the user to optimize between precision and ink coverage as needed.
2Quantity of substance
If a softer tip is used, then ink coverage capability is improved, but drawing precision deteriorates
Solution Approach 1:
The movable core mechanism enables the user to switch between soft and hard tip states dynamically. For ink coverage tasks, the core is retracted to allow the tip to be softer and more compliant, maximizing ink transfer and coverage area while maintaining the ability to switch to precision mode when needed.
Solution Approach 2:
The tip rigidity parameter is adjusted by repositioning the reinforcing core. When the core is moved away from the tip edge, the effective rigidity decreases, enabling better ink coverage through increased tip compliance and contact area with the writing surface.
3Adaptability or versatility
If multiple writing tools with different tip rigidities are purchased, then versatility is improved, but device complexity and cost increase
Solution Approach 1:
The patent creates a single writing instrument that performs multiple functions by incorporating an adjustable core mechanism. This universal design allows one tool to replace multiple specialized tools (hard tip pens, soft tip pens, brush pens) by enabling the user to adjust the tip rigidity according to the specific task requirements.
Solution Approach 2:
The movable core is nested within the tip structure, allowing it to be positioned at different locations without adding external complexity. The core slides within a guided cavity, enabling compact integration of the adjustment mechanism within the existing pen body without significantly increasing overall device complexity.
4Measurement precision
If a firm tip is used, then drawing precision is improved, but pressure requirement increases
Solution Approach 1:
The adjustable core mechanism allows dynamic optimization of the tip's mechanical properties. When precision is needed, the core is positioned to increase rigidity, providing stability and precision. The system adapts to reduce pressure requirements by allowing softer tip configurations when extreme precision is not required, distributing force more efficiently.
Data Source
AI summary
A tip reinforcing system that is configured to allow a user to adjust a rigidity attribute of the marking tip of a instrument, the tip reinforcing system including: a tip core cavity that is a hollow portion within a marking tip that extends axially through the marking tip, a tip reinforcing core configured to be movable within the tip core cavity in order to change the internal structure of the marking tip, and a core moving mechanism configured to be operated by a user to move the tip reinforcing core relative to the housing body of the instrument in order to adjust the level of exposure of the tip reinforcing core within the marking tip.