Multifunctional electric self-cleaning teaching blackboard

Abstract

The invention discloses a multifunctional electric self-cleaning teaching blackboard. The blackboard comprises an outer frame and an electric self-cleaning assembly consisting of a strip-type blackboard brush and a driving mechanism; an either-rotation motor and a corresponding electric control board are arranged at one side edge of the outer frame, and the driving mechanism is composed of a feed screw nut moving mechanism; the bottom of the outer frame is provided with a guide track groove; the strip-type blackboard brush is composed of a U-shaped brush body, a hollow strip-type wiping rod in the long groove of the brush body and two bristles arranged at two sides of the hollow strip-type wiping rod, the bottom of the strip-type blackboard brush is positioned in the guide track groove, and the top of the strip-type blackboard brush is fixed on the nut which is used as a driving connecting block, the strip-type blackboard brush can horizontally move back and forth along the guide track groove under the driving of the feed screw nut so as to complete the wiping operation; and two sides of the hollow strip-type wiping rod are provided with dust absorption holes, and the bottom of the hollow strip-type wiping rod is connected with a dust absorption pipe. The electric self-cleaning assembly can be manufactured in a bilaterally symmetric structure. The blackboard is adapted to large blackboards of large size and length in the middle and elementary schools, and has the advantages of simple structure, multiple use functions and convenience in operation; and the blackboard is in favor of reducing the dust pollution and establishing a dustless environmentally-friendly classroom environment.

Description

(1) Technical field [0001] The invention relates to a teaching blackboard, in particular to a multifunctional electric self-erasing teaching blackboard. (two), background technology [0002] At present, there are various blackboards commonly used in various teachings, but most of the blackboards written with chalk have the problem of dust pollution, which seriously affects the health of teachers and students. Things that come into contact with every day, especially when wiping the blackboard, a large piece of white dust is flying all over the sky, and everyone inevitably inhales some chalk dust, and the students in the front row, teachers, and students on duty inhale more. The lungs, upper respiratory tract, eyes, skin, ears and other organs of primary and middle school students and teachers cause harm, induce other diseases and pollute the environment. In order to solve the problem of dust pollution and reduce the labor intensity of teachers frequently wiping the blackboar...

AI Technical Summary

Problems solved by technology

Although the self-wiping blackboard of the above-mentioned prior art can realize the self-wiping effect of the board surface, it also has a complicated structure and is difficult to install and maintain, especially because of the structure of the wiper, the length of the back and forth stroke of the wiper hair brush is very large. Limited, the limited surface area of ​​comprehensive wiping, so that the length and width of these self-wiping blackboards cannot be made as large as traditional teaching blackboards, so it is difficult to adapt to the large length and size of classrooms in primary and secondary schools and university classrooms. use the big chalkboard

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