CN201350745Y - Permanent pen refill - Google Patents

Abstract

The utility model discloses a permanent pen refill, belonging to stationery, and mainly solves the problems of wasting money and wasting labor for changing the pen refill frequently. The permanent pen refill comprises a pen point and a core tube; wherein the core tube is filled with ink and sealing liquid. The pen refill is characterized in that internal thread is arranged at the connecting end of the core tube and the pen point; and the core tube is connected with the pen point by screw thread. When the ink in the core tube runs out, the sealing liquid in the core tube reaches to the connecting part of the core tube and the pen point, screw off the core tube to be inverted and upright, the sealing liquid is underlaid, then fill the ink in the upper end, and screw on the pen point, so that the pen refill continues to be used, and the sealing liquid can seal the ink to prevent the backflow. The permanent pen refill not only saves expenditure for students, but also saves the trouble of frequent changing of the pen refill, and has simple structure, convenience and practicability.

Description

Permanent pen core

Technical field

The utility model relates to a kind of stationery, particularly a kind of permanent pen core.

Background technology

Present student will do one's assignment or write notes every day, and pen is indispensable study article, and the student who has likes using gel ink pen, and the word better appearance of writing out is beautiful, but the ratio that the pen core of gel ink pen is used is very fast, often change pen core, and is not only expensive but also bothersome.

The utility model content

The purpose of this utility model is to provide a kind of permanent pen core, after the ink in this pen core uses up, can inject ink in the core pipe, continues to use.

The technical scheme in the invention for solving the technical problem is: a kind of permanent pen core, comprise nib and the core pipe that ink and confining liquid are housed, it is characterized in that described core pipe and written link are provided with internal thread, core pipe and nib are by being threaded togather.

The beneficial effects of the utility model are: the permanent pen core of this kind, the nib with the core pipe for being threaded, can continue to inject ink after ink uses up, nib and core pipe can use always, both for the student has saved spending, have saved the trouble of frequent replacing pen core again, simple in structure, convenient and practical.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Among the figure: 1 nib, 2 core pipes.

The specific embodiment

As shown in Figure 1.

A kind of permanent pen core comprises nib 1 and the core pipe 2 that ink and confining liquid are housed, and described core pipe 2 is provided with internal thread with written 1 link, and core pipe 2 and nib 1 are by being threaded togather.

After ink was used up in the core pipe 2, the confining liquid in the inner core tube 2 arrived core pipe 2 and written 1 connecting portion, screws off core pipe 2, upset is erect, and injects ink in the upper end of confining liquid, nib is screwed on again, can continue to use, and confining liquid is sealed ink once more and is prevented to flow backwards.The nib of this pen core and core pipe can use always, both for the student has saved spending, have saved the trouble of frequent replacing pen core again, and be simple in structure, convenient and practical.

Claims (1)

1, a kind of permanent pen core comprises nib and the core pipe that ink and confining liquid are housed, and it is characterized in that described core pipe and written link are provided with internal thread, and core pipe and nib are by being threaded togather.