Electric erasing type dustfree soft blackboard

Abstract

The invention discloses an electric erasing type dustfree soft blackboard, which includes a frame, a rolling screen roller, an erasing roller, a guide roll, a writing subplate, an erasing clamping bar, a writing soft surface and an electric-controlled case, wherein the frame is composed of a baseboard, an upper tank and a lower tank, the upper tank and the lower tank are rectangle case bodies and equipped parallelly, and the upper tank and the lower tank are equipped with a number of pairs of bearing supports correspondingly; the rolling screen roller, the erasing roller and the guide roll are equipped symmetrically using the frame as center, and are equipped on the bearing supports of the upper tank and the lower tank respectively; the writing subplate is a rectangle flat-plate which is equipped parallel to the baseboard and is connected with the upper tank and the lower tank; the erasing clamping bar is equipped between the erasing roller and the writing subplate and is connected with the upper tank and the lower tank; the writing soft surface is equipped on the writing subplate surface, both ends of the writing soft surface are respectively fixed on the rolling screen rollers which are symmetrically equipped; the electric-controlled case is located on one end of the lower case. The invention has the advantages of high automatic degree, large writing area, easy operation convenient writing and good dedusting effect.

Description

technical field [0001] The invention relates to a writing blackboard in the technical field of cultural and educational supplies, in particular to an electrically erasable dust-free soft blackboard. Background technique [0002] The use of blackboards is very large. Most of the blackboards currently in use use aluminum alloy as the frame, wooden materials sprayed with blackboard paint or other hard metal materials as the writing panel, and materials such as sponges and cotton brushes as blackboard erasers. Realize the purpose of writing and erasing. In the process of use, the problems existing in the traditional blackboard are: the writing area is limited, which cannot meet the writing needs of users; manual erasing is required, which is time-consuming and laborious, and the erasing effect is not good, which affects re-writing; a large amount of dust generated pollutes the environment, It has seriously affected the health of users, especially teachers, students and other pe...

AI Technical Summary

Problems solved by technology

In the process of use, the problems existing in the traditional blackboard are: the writing area is limited, which cannot meet the user’s writing needs; manual erasing is required, which is time-consuming and laborious, and the erasing effect is not good, which affects re-writing; a large amount of dust generated pollutes the environment, Seriously affect the health of users, especially teachers, students and other people who use it frequently, it is easy to cause respiratory diseases

Aiming at the above problems, many people try to make some improvements. After searching the existing technical documents, it is found that the process soft blackboard of the patent No. 99248378 is written with rollable soft chalk with several double-sided self-adhesive strips attached to the back. Paste, the soft blackboard of this process can be folded and is easy to carry, because the double-sided adhesive tape on the back cannot maintain stickiness for a long time, it needs to be replaced frequently, and the wall surface is required to have high flatness, therefore, it cannot meet the teaching needs of long-term use of the blackboard; patent number The electric blackboard of 03112751 adopts the roll-type soft blackboard model, and adopts an automatic balancer to avoid the deviation of the blackboard soft panel due to the influence of gravity. It also uses the clutch roller to control the erasing roller brush to realize the two functions of erasing and retaining handwriting , because the character erasing function is completed by a single roller brush, and the character erasing process can only be completed once at a time, it is difficult to ensure that the character writing is wiped clean; and the model of the entire work is a roller type, using a tension brace to adjust The distance between the driving wheel and the driven wheel, however, if the soft panel is always in a tight state, it will affect the service life of the blackboard; moreover, the area of ​​the soft panel is limited, it is difficult to solve the problem of insufficient writing surface in actual use

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