Double-color pen

Abstract

The invention discloses a double-color pen, and aims to provide a double-color pen which can replace a refill and is convenient to use. The double-color pen comprises a tubular shell, two ends of the shell are respectively and rotatably connected with a pen holder, the other end of the pen holder is provided with a pen point, a sliding block and a refill connected with the sliding block are arranged in the pen holder, a linkage device is arranged in the shell and connected with two transmission gear sets, the transmission gear sets are connected with the sliding block, the pen holder rotates, the refill is exposed out of the pen point, and the refill at the other end retracts into the pen point. The double-color pen has the beneficial effects that the double-color pen is stable in structure, smooth in rotation, convenient to install, stable in transmission and connection, high in transmission efficiency, accurate in positioning, simple in process, low in production cost and light in component weight, free switching of the two refills can be guaranteed, the refills are convenient to replace, the switching efficiency is improved, the service life of the pen is prolonged, and application and popularization of the double-color pen are facilitated.

Description

technical field [0001] The invention relates to a pen, and specifically discloses a two-color pen. Background technique [0002] At present, the commonly used ballpoint pens at home and abroad, including fountain pens and gel pens, all use single-tube single-head monochrome refills. This kind of pen can only write characters of one color, for example, only black or red can be written. Word, just need to buy separately when writing the word of two kinds of colors alternately, not only takes up space but also costs money. For this reason, someone has invented a two-color pen or even a multi-color pen. However, most of the pens are filled with ballpoint pen refills. When writing with a ballpoint pen, there will be a hidden danger of fading over time. It is not suitable for storage and inspection of notebooks, and cannot be replaced. , is a one-time pen, relatively low cost performance, middle and high school students usually use gel pens to write and staff meeting minutes, esp...

AI Technical Summary

Problems solved by technology

For this reason, someone has invented a two-color pen or even a multi-color pen. However, most of the pens are filled with ballpoint pen refills. When writing with a ballpoint pen, there will be a hidden danger of fading over time. It is not suitable for storage and inspection of notebooks, and cannot be replaced. , is a one-time pen, relatively low cost performance, middle and high school students usually use gel pens to write and staff meeting minutes, especially students, if you want to write two colors at this time, you need to use two different pens If you use a colored pen, you must constantly change the pen to pick the color during writing, and you will be troubled by time delays.

At the same time, when using one pen, the other pen is easy to be discarded or cannot be found. When it needs to be used, it will be in a hurry and cannot be found for a long time, and it is easy to fall to the ground, causing damage to the pen core, resulting in waste of resources. , which is not conducive to people's pursuit of convenience, simplicity, high efficiency, energy saving and environmental protection work requirements

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