CN204915037U - Blackboard eraser - Google Patents

Abstract

The utility model provides a blackboard eraser, including blackboard eraser body and the brush hair of setting on the blackboard eraser body, wherein this internally is provided with miniature dust catcher the blackboard eraser, being provided with of blackboard eraser body still is provided with a plurality of air suction openings in the horizontal side of brush hair, the air suction opening with miniature dust catcher is linked together, be provided with a shaped plate in two vertical sides of blackboard eraser body respectively, the strip shaped plate with the brush hair sets up to install in the unanimous direction of direction and blocks the piece, the opening has still been seted up on the opposite side of brush hair in not setting up of blackboard eraser body, miniature dust catcher setting is in in the opening, miniature dust catcher is linked together with installation power supply unit above that, through setting up the last switch of power supply unit starts or cuts out miniature dust catcher, opening upper cover with lid. The utility model discloses a blackboard eraser can be solved the dust effectively and descend slowly and lightly and defect detrimental to health everywhere.

Description

A kind of novel blackboard eraser

Technical field

The utility model relates to teaching aid technical field, particularly, relates to a kind of novel blackboard eraser.

Background technology

Chalk is made up of gypsum, and the main component of gypsum is calcium sulfate.Write with chalk writing on the blackboard, is to be coated on blackboard by gypsum powder.When erasing the board, Gypsum dust (chalk dust) in atmosphere of short duration wave after to fall object near blackboard and on the ground.Its particle is comparatively large, and how more than 100 microns, heavier, fall very fast, the time of aloft floating is short.From the above, the particle of chalk dust is comparatively large, scarcely can be drawn into respiratory tract, add that again gypsum is to human non-toxic, and medical circle does not also cause the report of PUD D so far because sucking chalk dust.

When erasing the board, tedious chalk dust can dance in the air all over the sky, drops on desk, before dais, is even inhaled in the body of people, affects mood, more unhealthful.Will write writing on the blackboard because attend class every day, erase the board, chalk dust often makes with dishevelled hair and a dirty face teacher.Generally speaking, a middle school Chinese language teacher, on the joint class of 45 minutes, need the writing on the blackboard writing a blackboard, and the writing on the blackboard of a blackboard approximately needs to use up half chalk; And a middle school mathematics teacher or English teacher one class often need the writing on the blackboard writing blackboard, the chalk of 2 half of approximately will using up.And the teacher of graduating class needs at most six class in one day.It multiple one day, year after year, teacher made the chalk quantity of using up considerable in career.And classmates are being full of the environment learning of chalk dust, not only have impact to health, be more unfavorable for being absorbed in studies, the student on duty especially erased the board suffers untold misery especially.

Although disclosed multiple blackboard eraser in prior art, but effectively can not solve the problem that dust descends slowly and lightly in actual applications.

Utility model content

For the problems referred to above of the prior art, the utility model proposes a kind of novel blackboard eraser efficiently solving the problem that dust descends slowly and lightly everywhere.

Of the present utility modelly provide a kind of novel blackboard eraser, comprise blackboard eraser body and be arranged on the bristle on blackboard eraser body cross side, wherein:

Be provided with micro-cleaner in described blackboard eraser body, the cross side being provided with bristle of described blackboard eraser body is also provided with multiple air suction opening, and described air suction opening is connected with described micro-cleaner;

Two longitudinal sides of described blackboard eraser body are respectively arranged with stripe board, and described stripe board is provided with block piece on the direction consistent with described bristle setting direction;

The opposite side that bristle is not set of described blackboard eraser body also offers opening, described micro-cleaner is arranged in described opening, described micro-cleaner is connected with supply unit mounted thereto, started by the switch be arranged on described supply unit or close described micro-cleaner

Described opening is also covered with lid.

Further, described stripe board is rotating by rotating shaft relative to described blackboard eraser body.

Further, the length of described block piece is longer than the length of described bristle.

Further, described block piece is sponge.

Compared with prior art, the beneficial effects of the utility model are:

By being arranged on the micro-cleaner in blackboard eraser body, then can suck some dust, meanwhile, block piece is set by the both sides in blackboard eraser body, effectively can place dust be scattered thus sucked by dust catcher, thus avoid dust to descend slowly and lightly and the defect of health risk and contaminated environment everywhere.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described.

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

Fig. 2 is front schematic view of the present utility model, wherein eliminates the structure of bristle.

Reference numeral

Blackboard eraser body 10; Air suction opening 11; Stripe board 12; Rotating shaft 121; Block piece 13; Bristle 20; Micro-cleaner 30; Opening 40; Supply unit 50; Switch 51; Lid 60.

Detailed description of the invention

Be clearly and completely described the technical scheme in the utility model below, obviously, described embodiment is only one of them embodiment of the present utility model.

As shown in the accompanying drawings, the utility model provides a kind of novel blackboard eraser, comprises blackboard eraser body 10 and is arranged on the bristle 20 on blackboard eraser body 10 cross side, wherein:

Be provided with micro-cleaner 30 in described blackboard eraser body 10, the cross side being provided with bristle 20 of described blackboard eraser body 10 is also provided with multiple air suction opening 11, described air suction opening 11 is connected with described micro-cleaner 30;

Two longitudinal sides of described blackboard eraser body 10 are respectively arranged with stripe board 12, and described stripe board 12 is provided with block piece 13 on the direction consistent with described bristle setting direction;

The opposite side that bristle is not set of described blackboard eraser body 10 also offers opening 40, described micro-cleaner 30 is arranged in described opening 40, described micro-cleaner 30 is connected with supply unit 50 mounted thereto, is started or close described micro-cleaner 30 by the switch 51 be arranged on described supply unit 50;

Described opening 40 is also covered with lid 60.By uncap 60, then micro-cleaner 30 can be taken out easily, thus the dust of suction is poured out.

Further, described stripe board 12 is rotating by rotating shaft 121 relative to described blackboard eraser body 10.

Further, the length of described block piece 13 is longer than the length of described bristle 20.

Further, described block piece 13 is sponge.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (4)

1. a novel blackboard eraser, comprises blackboard eraser body (10) and is arranged on the bristle (20) on blackboard eraser body (10) cross side, it is characterized in that:

Micro-cleaner (30) is provided with in described blackboard eraser body (10), the cross side being provided with bristle (20) of described blackboard eraser body (10) is also provided with multiple air suction opening (11), described air suction opening (11) is connected with described micro-cleaner (30);

Two longitudinal sides of described blackboard eraser body (10) are respectively arranged with stripe board (12), and described stripe board (12) is provided with block piece (13) on the direction consistent with described bristle setting direction;

The opposite side that bristle is not set of described blackboard eraser body (10) also offers opening (40), described micro-cleaner (30) is arranged in described opening (40), described micro-cleaner (30) is connected with supply unit mounted thereto (50), is started or close described micro-cleaner (30) by the switch (51) be arranged on described supply unit (50);

Described opening (40) is also covered with lid (60).

2. novel blackboard eraser according to claim 1, is characterized in that, described stripe board (12) by rotating shaft (121) relative to described blackboard eraser body (10) for rotating.

3. novel blackboard eraser according to claim 1, is characterized in that, the length of described block piece (13) is longer than the length of described bristle (20).

4. the novel blackboard eraser according to claim 1 or 3, is characterized in that, described block piece (13) is sponge.