Multifunctional Automatic Chalk Writer

Abstract

The invention discloses a multifunctional automatic chalk writing device. The chalk writing device is composed of a chalk sleeve for clamping a chalk and an electronic pointer. The electronic pointer is installed on the top of the chalk sleeve. The chalk sleeve comprises a cylindrical sleeve and a jacket installed in the sleeve. A clamping piece device for clamping the chalk is arranged at one end of the jacket, the front end of the clamping piece device stretches out of the sleeve, a top block is installed at the top of the other end of the jacket, and a thumbing block is installed at the top of the top block. According to the multifunctional automatic chalk writing device, the hands of a user are prevented from directly making contact with the chalk in the using process, in the using process, it is guaranteed that the chalk automatically stretches out by proper writing length, and the stretching-out length does not need to be manually adjusted; the chalk is effectively protected, the chalk is prevented from being broken, and waste of the chalk is avoided; a strip-shaped magnet is arranged on the surface of the chalk sleeve, the chalk sleeve can be attracted on a blackboard when not used, and therefore loss is avoided; the overall structure is simple, no damageable part similar to a micro motor is arranged inside, and the cost is low.

Description

technical field [0001] The invention relates to a chalk writer, in particular to a multifunctional automatic chalk writer. Background technique [0002] The main component of the chalk used in the daily teaching process is gypsum. Due to the brittleness of the chalk itself, it is easy to break the chalk when writing, resulting in waste of chalk; when using chalk, the hand is in direct contact with the chalk, and the chalk dust will affect the use. The health of the patient and the cleanliness of the clothes; multimedia teaching has begun to be popularized in the field of education on a large scale. [0003] At present, chalk and electronic pointer are two completely independent teaching tools, which are very inconvenient to use at the same time; an existing automatic chalk writing device is driven by a micro motor, which is expensive, complex in structure, and has many wearing parts. Large-scale production and promotion; another kind of chalk writing device, the protruding ...

AI Technical Summary

Problems solved by technology

[0002] The main component of the chalk used in the daily teaching process is gypsum. Due to the brittleness of the chalk itself, it is easy to break the chalk when writing, resulting in waste of chalk; when using chalk, the hand is in direct contact with the chalk, and the chalk dust will affect the use. The health of the patient and the cleanliness of the clothes; multimedia teaching has begun to be widely popularized in the field of education

[0003] At present, chalk and electronic pointer are two completely independent teaching tools, which are very inconvenient to use at the same time; an existing automatic chalk writing device is driven by a micro motor, which is expensive, complex in structure, and has many wearing parts. Large-scale production and promotion; another kind of chalk writing device, the protruding length of the chalk needs to be adjusted manually, which wastes time and affects the teaching process

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