Post-pressing valve type mark pen

By setting up air flow channels and observation windows in the marker pen, the problem of poor ink flow stability is solved, air pressure balance and user-friendly ink output control are achieved, and the usage experience is improved.

CN223395963UActive Publication Date: 2025-09-30SHENZHEN THOUSANDSHORES TECH CO LTD
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Patent Information

Application Number
CN202422868208.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-09-30
Estimated Expiration
2034-11-25

AI Technical Summary

Technical Problem

The ink flow stability of existing rear-pressure valve markers is poor, and it is easy to cause air pressure imbalance due to environmental factors and usage time. It is also difficult for users to control the amount of ink output, resulting in ink explosion or leakage.

Method used

A rear-pressure valve marker pen has been designed. By setting an airflow channel, a pen tip cavity and an air hole in the pen shaft and the ink storage chamber separation tube, a stable air intake channel is formed to ensure air pressure balance. The observation window composed of the transparent shaft and the transparent tube allows the user to monitor the ink storage amount in real time and flexibly control the pressing frequency and degree.

Benefits of technology

It effectively improves the stability of ink flow, avoids ink explosion and leakage, and provides a smooth writing experience and rich usage options.

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Abstract

The utility model relates to a rear pressure valve type mark pen which comprises a pen point, a pen mouth, a pen holder and an ink storage cavity separating cylinder. An inner cavity of the penholder comprises a first ink storage cavity; an air hole is formed in one end, facing the pen mouth, of the pen holder or the ink storage cavity separation cylinder; the pen mouth is provided with an airflow channel; the airflow channel communicates with the outside and an inner cavity of the pen mouth, and the air hole communicates with the inner cavity of the pen mouth and the first ink storage cavity. The transparent rod body and the transparent cylinder body form an observation window for a user to observe the ink storage amount in the first ink storage cavity from the outside to the inside. According to the mark pen, the ink flowing stability can be effectively improved, on one hand, an air inlet channel is formed between the outside and the first ink storage cavity so that air pressure balance between the first ink storage cavity and the outside can be maintained, smooth writing experience is provided for a user, and on the other hand, the ink flowing stability can be effectively improved. A user can directly see the ink storage amount of the first ink storage cavity through the observation window, the pressing frequency and the pressing degree are flexibly controlled, and ink explosion and ink leakage are effectively avoided.
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