A multifunctional blackboard eraser

Abstract

The invention discloses a multifunctional blackboard eraser. The multifunctional blackboard eraser comprises a shell, a handwriting erasing brushing plate and a dust recycling assembly. A top opening is formed in the top of the shell, the handwriting erasing brushing plate and the dust recycling assembly are arranged at the top opening, and a plurality of first dust collecting openings are formed in the handwriting erasing brushing plate; and the dust recycling assembly comprises a supporting plate and a rolling brush, a plurality of second dust collecting openings are formed in the supporting plate, the rolling brush is rotationally arranged at the second dust collecting openings, the first dust collecting openings correspond to the second dust collecting openings in a one-to-one manner, and the rolling brush partly extends into the first dust collecting openings. Compared with the prior art, the multifunctional blackboard eraser has the beneficial effects that most dust brushed from a blackboard through the handwriting erasing brushing plate can be effectively collected into the shell through the dust recycling assembly, dust accumulation on the surface of the blackboard eraser is greatly reduced, and meanwhile injuries of dust raising to the human body can be reduced.

Description

technical field [0001] The invention relates to office tools, in particular to a multifunctional blackboard eraser. Background technique [0002] The blackboard is a very common and very important office tool in the field of education. It is an important carrier for students and teachers to carry out knowledge transfer and education, and the blackboard eraser that is inseparable from it plays an equally important role. In a person's life, he has to experience more than ten years of education starting from kindergarten. Although the development of multimedia technology has had a great impact on the use of blackboards in recent years, with the popularization of multimedia and rational reflection in the education sector, people have discovered the role of blackboards. It is irreplaceable, so the use of blackboards in classroom teaching is still very common. However, chalk can produce a lot of dust in the writing process, which seriously affects the health of teachers and stude...

AI Technical Summary

Problems solved by technology

However, chalk can produce a lot of dust in the writing process, which seriously affects the health of teachers and students. Although the emergence of various new dust-free chalks has solved the flying of dust in the chalk writing process to varying degrees, there are still two aspects. question

The first aspect is that in the process of using an ordinary blackboard eraser to wipe the blackboard, there will still be dust flying, which seriously affects the health of students; the second aspect is that dust will appear on the surface of the blackboard eraser after a period of use Accumulation makes the surface of the blackboard like a layer of white powder when it is wiped, which seriously affects the effect of chalk writing and teaching

At present, there are many blackboard erasers with dust-absorbing functions, such as the use of electric power to absorb dust, which solves the problem of flying dust, but does not consider the second problem; The blackboard eraser that uses water to purify the board surface, such as a blackboard eraser that uses a layer of cloth on the surface of a sponge, can completely purify the dust on the blackboard through the moisture in the sponge, but this type of blackboard eraser has too much water on the board surface and is difficult to dry quickly The problem is that it is difficult to meet the requirements of classroom teaching to wipe and write at any time. In addition, after a long time, there will also be the problem of chalk dust accumulation, and the effect of board surface purification is greatly reduced. In actual teaching, only mops can be used in each big class Purify the blackboard in other ways, and then use the long time between classes to dry the water on the board surface, which seriously limits the effective development of teaching, and also affects the mood of teachers and students in the process of wiping the blackboard to a certain extent

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