Special chalk holder

Abstract

The invention discloses a special chalk holder, which belongs to the technical field of modern life application. Millions of teachers in modern life use chalk to write on the blackboard every day, and live in the chalk dust after wiping the blackboard every day, which can cause discomfort in the nose, throat and throat; at the same time, long-term direct skin contact with chalk also exists health problems. The purpose is to solve practical problems, improve teaching conditions, avoid direct contact between users' fingers and chalk, and reduce invisible health hazards to users; at the same time, the use of chalk can be extended, the remaining amount is small, and environmental protection is achieved; it is characterized by The device is composed of a pen holder body, a pen holder jacket, a spiral inner seat, a wiper head, an elastic thread and other related auxiliary functional parts. The invention has a series of advantages such as erasing writing errors at any time, saving time, improving efficiency, long service life and low cost; meanwhile, the product has a wide range of adaptability, good promotion prospects, and good economic and social benefits.

Description

technical field [0001] The invention relates to a special chalk container, which belongs to the technical field of modern life application. Background technique [0002] Chalk is a tool widely used in daily life and is generally used for writing on blackboards. The composition of chalk is a white precipitate of calcium sulfate, which is not easily decomposed, and the particles are larger than dust. Teachers often need to write and draw on the blackboard during lectures, and they have to constantly erase and write in a class of 45 to 50 minutes. When the class is over, a layer of white chalk dust is often left on the hands and sleeves; Class fingers are covered with white marks and need to be washed. Millions of teachers use chalk to write on the blackboard every day, and live in the chalk dust after wiping the blackboard every day, which can cause discomfort in the nose, pharynx, and throat; Contents of the invention [0003] The purpose of the invention is to solve pra...

AI Technical Summary

Problems solved by technology

Millions of teachers use chalk to write on the blackboard every day, and live in the chalk dust after wiping the blackboard every day, which can cause discomfort in the nose, throat, and throat; at the same time, there are health problems in the long-term direct contact of the skin with chalk

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