Blackboard capable of being automatically erased

Abstract

The invention discloses a blackboard capable of being automatically erased. The blackboard comprises a blackboard surface, center rotating shafts, a black soft plate, strip erasers, a cushion plate and side panels; slide clamping grooves are formed in four vertical end surfaces of an outer shell; the side panels are connected to the two sides of the outer shell through rotating shafts; the centerrotating shafts are embedded in transmission columns; a driving device is welded under the center rotating shaft on the right side; the transmission columns are coated out of the black soft plate; thestrip erasers are fixed on two side shaft surfaces of the black soft plate; the transmission columns are positioned in the two ends of the outer shell; and the cushion plate is fixed between the transmission columns. Through rotation of the transmission columns, the blackboard capable of being automatically erased can adjust the surface position of the black soft plate to show written contents inmultiple positions; and meanwhile, the written contents on the black soft plate passing through the strip erasers can be wiped, so that the manual process of erasing the blackboard is saved, the duston the blackboard cannot fly away through automatic erasing, and the dust sucked by readers, writers and learners is reduced.

Description

technical field [0001] The invention relates to the technical field of teaching equipment, in particular to an automatically wipeable blackboard. Background technique [0002] The blackboard is an indispensable teaching equipment for daily school education. Teachers use the blackboard to organize writing on the blackboard and explain topics, and students use the blackboard to extract notes and learn knowledge. [0003] However, most of the blackboards used at any time in the classroom are old-fashioned black hard boards. After writing the content, they need to be manually erased, which is not only troublesome, but also produces a lot of dust, which endangers the health of teachers and students. On the surface, the content written in the corner will make the students on the side unable to see clearly, which will affect the efficiency of excerpting. Contents of the invention [0004] The purpose of the present invention is to provide an automatically wipeable blackboard to ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a blackboard that can be wiped automatically, so as to solve the problems in the above-mentioned background technology that manual erasure is required after writing, a large amount of dust is generated, and it is inconvenient for students to extract

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