CN201254033Y - Dustless blackboard - Google Patents

Abstract

The utility model discloses a chalk ash reduction blackboard eraser, comprising a blackboard eraser back and brush hair bundles; groups of brush hair bundles are inclined in the same direction and fixed on the blackboard back; chalk ash suction sponge is arranged among brush hair bundles; the chalk ash suction sponge is fixed on the blackboard eraser back. When the chalk ash reduction blackboard eraser is adopted; as the brush hair bundles are contacted with the blackboard plane in a certain inclined angle, the chalk ash can be erased by hair bundles easily; the erased chalk ash falls on the chalk ash sponge along the brush hair bundle direction and stored temporarily, so the chalk ash reduction blackboard eraser has simple structure, low cost and effectively controls the dispersion of chalk ash, and guarantees the environmental sanitation of classrooms and is good for the health of teachers and students.

Description

Subtract the dirt blackboard eraser

Technical field

The utility model belongs to a kind of teaching aid, particularly a kind of dirt blackboard eraser that subtracts.

Background technology

As everyone knows, blackboard eraser is made up of the blackboard eraser back of the body and some pieces, and pieces is vertically fixed on the blackboard eraser back, when with its blackboard wiping, pieces contacts with blackboard surface is vertical, is concentrated between pieces and the blackboard surface by the bits of the chalk under wiping, and constantly fall, make dust from flying, pollute classroom environment.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, and cost is low, and what can obviously alleviate dust from flying subtracts the dirt blackboard eraser.

For achieving the above object, solution of the present utility model is: a kind of dirt blackboard eraser that subtracts, to form by the blackboard eraser back of the body and pieces, and the described pieces of respectively organizing is fixed on the blackboard eraser back along same direction inclination, be provided with the dust suction sponge between the pieces, described dust suction sponge is fixed on the blackboard eraser back.

Adopt the above-mentioned dirt blackboard eraser that subtracts, because pieces is the angle of inclination with the blackboard plane and contacts, thereby dust is easy to be wiped by pieces, wiped dust down and will be dropped to storage temporarily on the dust suction sponge of blackboard eraser along the pieces direction, so it is simple in structure that this utility model has, with low cost, effectively controlled flying upward of dust, guarantee the environmental sanitation in classroom, helped the healthy of Faculty and Students.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

The specific embodiment

As shown in Figure 1, this subtracts the dirt blackboard eraser, is made up of the blackboard eraser back of the body 1 and pieces 2, and the described pieces 2 of respectively organizing is provided with dust suction sponge 3 along being fixed on the blackboard eraser back of the body 1 that same direction tilts between the pieces 2, and described dust suction sponge 3 is fixed on the blackboard eraser back of the body 1.Constitute an acute angle between the described pieces and the blackboard eraser back of the body, the angle of this acute angle is generally 45---between 60 degree.

Claims (1)

1. one kind subtracts the dirt blackboard eraser, form by the blackboard eraser back of the body (1) and pieces (2), it is characterized in that: the described pieces (2) of respectively organizing is along being fixed on the blackboard eraser back of the body (1) that same direction tilts, and pieces is provided with dust suction sponge 93 between (2)), described dust suction sponge (3) is fixed on the blackboard eraser back of the body (1).