Neutral pen core capable of being repeatedly filled with ink

Abstract

The invention relates to a neutral pen core capable of being repeatedly filled with ink. An annular boss is arranged at the top end of a pen core head; the two sides of the bottom end of the annular boss respectively correspond to a hermetically connected seal head and a fixed column head; an ink inlet is arranged in the middle of the seal head; an ink injecting pipe is connected between the seal head and the fixed column head; one end adjacent to the fixed column head in the ink injecting pipe is connected with one end of a spring, and the other end of the spring is connected with a gasket; the outer surface of the gasket is connected with a hermetical column head; the hermetical column head is matched with a hermetical ink inlet; the pipe wall of the ink injecting pipe is provided with an ink outlet; a plurality of through holes are arranged at the periphery of the gasket; and pasters are placed in a pen core barrel. The invention has the advantages of simple structure, low production cost, simple manufacturing processes and good tightness, can effectively prevent air from entering the pen core head in the ink filling process, improves the writing quality, achieves the purpose of being repeatedly filled with ink, and effectively prevents the disposable waste of a neutral pen and prevents the environment from being polluted.

Description

technical field [0001] The invention relates to a gel pen refill, in particular to a gel pen refill which can be refilled with ink. Background technique [0002] According to reports, there are more than 200 million primary and middle school students in my country, and 90% of the students use core refills. The annual consumption of core refills is more than 5 billion. The core pen refills are usually discarded at will, and it is almost impossible to collect them together. The waste pen holders and refills generated every year amount to tens of tons. As the country vigorously promotes energy conservation and emission reduction, develops green economy, and takes the road of sustainable development, All walks of life are actively developing and implementing recyclable products. For example, in the pen industry, traditional pen refills are for one-time use. After use, refills cannot be recycled repeatedly, resulting in a lot of waste. Although there are some refillable refills on...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a refillable gel pen refill, which effectively solves the problem of refilling refills for reusable refills, and at the same time can maintain continuous ink during writing and improve writing quality

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