Novel portable blackboard eraser

Abstract

The invention discloses a novel portable blackboard eraser. A plate body can be rectangular, the shape of a wiping block can be matched with that of the plate body, it means that when the plate body is rectangular, the wiping block is rectangular; a connecting buckle can be a plastic ring or a soft nylon hasp; a valve is used for covering a chalk, and the valve should be opened and closed easily; the wiping block is made of ordinary sponge, polyurethane foam material, hairbrush or the like, and the wiping block is convenient for cleaning; the wiping block can be movably connected with the plate body so as to facilitate change. The novel portable blackboard eraser has beneficial effects that the novel portable blackboard eraser can be sleeved or buckled on the middle finger or third finger without obstructing writing, once the wiping is needed due to wrong writing, the wiping can be performed conveniently, a user does not need to find the blackboard eraser, once the chalk is used up, another chalk can be taken from the blackboard eraser on the hand, and the situation that the students use chalks to quarrel and fight noisily is reduced; the novel portable blackboard eraser is convenient to use and practical, the blackboard eraser finding time is saved, and the time availability is improved in class. The novel portable blackboard eraser can be broadly used for the university, middle school and primary school teaching and can also be used for the field to be cleaned frequently.

Description

technical field [0001] The invention belongs to cultural and educational articles, in particular to a novel portable blackboard eraser. Background technique [0002] At present, most of the blackboard erasers used in middle schools or universities are removable large-scale blackboard erasers, and the blackboard erasers used in conjunction with them are also relatively large. Teachers generally put them on the desktop after wiping them in class. However, when the strokes or numbers of a certain word are accidentally written in the writing process and need to be wiped, you need to get the blackboard eraser on the desktop where the blackboard eraser is placed, and put it back after use. If there are many times of wiping in a class, blackboard erasers need to be taken frequently, which wastes valuable time in the classroom and is extremely inconvenient. Sometimes it is misplaced and needs to be found, which wastes more time. At the same time, when a piece of chalk is used up i...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to overcome above-mentioned defect, provide a kind of novel portable blackboard eraser, avoid the inconvenience that the teacher takes blackboard eraser, chalk frequently in class, also put an end to the situation that students use chalk to make trouble, save chalk

Images