Mobile English teaching blackboard with dust collection function

Abstract

A mobile English teaching blackboard with a dust-absorbing function, comprising a board body, two supporting boards are fixedly connected to the lower side of the board body, two rollers are fixedly connected to the lower side of the supporting boards, and the two supporting boards A base plate is fixedly connected between the bottoms, a support column is fixedly connected to the center of the base plate, and the top of the support column is fixedly connected to the lower side of the plate body. A vertical through hole is opened in the support column, and the cross section of the vertical through hole is rectangular. A rack is arranged in the vertical through hole, and the teeth on the rack are arranged to the right. The bottom end of the rack is fixedly connected with a mounting plate, and stabilizing blocks are fixedly connected around the lower side of the mounting plate; the right side of the support column The wall is provided with a vertical moving slot, the right side of the rack is meshed with a gear, the middle of the gear is fixedly connected with a rotating shaft, and the front and rear sides of the support plate are fixedly connected with baffles. The invention has the advantages of reasonable structural design, convenient use and the mutual conversion between blackboard writing and moving states, and has certain popularization and application value.

Description

technical field [0001] The invention relates to the technical field of English teaching blackboards, in particular to a mobile English teaching blackboard with a dust-absorbing function. Background technique [0002] English (English) is a language under the Indo-European language family-Germanic language family-West Germanic language. It is an internationally designated official language (as a mother tongue) and the most extensive first language in the world. It has the third largest number of native speakers in the world, second only to Chinese and Spanish. English evolved from the language spoken by the white people of the Anglo, Saxon and Judt tribes who immigrated from Denmark and other Scandinavia, Germany, Holland and surrounding areas to the British Isles in ancient times, and spread to the world through British colonial activities everywhere. Due to its contact with many ethnic languages ​​in history, its vocabulary has changed from unitary to plural, its grammar ...

AI Technical Summary

Problems solved by technology

In the prior art, the English teaching board cannot be moved, resulting in poor flexibility

Therefore, the Chinese patent: a mobile English teaching blackboard with vacuum function (authorized announcement number: CN206030873U), this patent is provided with a plurality of rollers at the bottom of the base, thus realizing the convenient movement of the blackboard, but The applicant has overlooked a very important issue: when the teacher writes on the blackboard, the blackboard is bound to be subjected to force, but the rollers are not subject to any restrictive force, which causes the blackboard to move during the writing process, resulting in poor writing. It is very inconvenient; at the same time, the dust will also affect the teacher's body

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