Automatic ink filling device for fountain pen

By designing an automatic ink-filling device for fountain pens, which utilizes an ink sensor and a micro motor to drive a rotating screw, the automatic filling of ink inside the pen is achieved. This solves the problem of increased costs caused by existing ink-filling structures and improves the pen's lifespan.

CN224375192UActive Publication Date: 2026-06-19SHANGHAI SEEMORE IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI SEEMORE IND CO LTD
Filing Date
2025-06-05
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The existing ink filling mechanism for fountain pens is separate from the pen body, which leads to increased costs associated with purchasing special-model ink cartridges and fountain pens.

Method used

The design incorporates an automatic ink-filling device for fountain pens. An ink sensor controls a micro-motor to drive a rotating screw, which in turn drives a telescopic threaded sleeve and a piston head to move, automatically filling the pen with ink and eliminating the need for additional operation or contact with the ink.

Benefits of technology

It enables automatic ink refilling without additional operation, reducing the cost of purchasing special model ink cartridges and pens, and extends the lifespan of the components by protecting the pen structure with a pen protective sleeve.

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Abstract

This utility model relates to the field of fountain pen ink filling technology, and more particularly to an automatic fountain pen ink filling device. Technical solution: The automatic fountain pen ink filling device includes a fountain pen ink-absorbing assembly and a pen protective sleeve; the pen protective sleeve is provided on the outer rear end of the fountain pen ink-absorbing assembly. This utility model works by inserting the pen tip into the ink. After the ink sensor detects the ink, it controls a micro motor to drive a rotating screw to rotate. The rotating screw thread drives a telescopic threaded sleeve and its front end piston head to move backward along a groove on the inner wall of a straight fixed sleeve. Due to the increased space between the pen body and the piston head, the ink inserted into the pen tip is forced into the pen body by the atmosphere, thus completing the ink filling function. The entire process requires no additional operation and does not involve contact with the ink.
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