CN209126399U - Without dust pollution blackboard eraser - Google Patents

Abstract

The without dust pollution blackboard eraser of the utility model is related to a kind of blackboard eraser, is made of backboard and blackboard eraser, and the backboard is a quadrangle box, is embedded in blackboard eraser in quadrangle box, the blackboard eraser is that gap secures bristle on plate body, and adjacent bristle is staggered.Quadrangle box upper, left and right three while wall along while mouthful be the box body sealing strip being fabricated from a flexible material, have dust-collecting box in the lower part of box body and there is hinged box cover to close dust-collecting box, the upper edge of box cover is lid mouth sealing strip.The blackboard eraser is when carrying out the chalk writing on wiping blackboard, under the action of chalk ash particle self gravity, it is fallen directly in ash box between gap, and the adhesive tape on bristle periphery is soft adhesive tape, and high as bristle, it can be close to the bending and remaining of bristle with blackboard surface, include remaining scattered dust in the alternate gap of backwash hair, most dust is all brought under control, dust granule no longer drifts everywhere, is conducive to the cleaning of classroom environment.

Description

Without dust pollution blackboard eraser

Technical field

The utility model relates to a kind of blackboard eraser more particularly to a kind of without dust pollution blackboard erasers.

Background technique

Chalk is common consumptive material during teachers ' teaching, and teacher transmits knowledge to student by writing a large amount of writing on the blackboard, But while wiping chalk writing with blackboard eraser, a large amount of dust can be also generated, floating in air, is not easily cleaned, also The health that will affect teachers and students destroys life, the student's environment of teachers and students, reduces the learning efficiency of student.In view of the above-mentioned problems, close Year, occur dust-free chalk on the market, it is intended to eliminate classroom dust pollution.It is that grease type or polyalcohols are added in common chalk Substance makees binder, adds the biggish filler of specific gravity, such as clay, marl, cement, can make the specific gravity of chalk dust in this way All increase with volume, be not easy to disperse, to a certain extent, solves the above problem, but in practical applications, it is to dust pollution Reducing effect it is not fairly obvious, especially wiping when, a large amount of dust still can be downward from the gap of blackboard eraser and blackboard It falls, a part can float towards in the air during the falling process, and another part is accumulated to the edge of blackboard or drops down onto ground, cleaning is stranded It is difficult and also there is dust to float towards in the air in scale removal process.

Summary of the invention

The purpose of this utility model is exactly to provide a kind of without dust pollution blackboard eraser to improve original technology.

The without dust pollution blackboard eraser of the utility model, is made of backboard and blackboard eraser, and the backboard is a quadrangle box, It is embedded in blackboard eraser in quadrangle box, the blackboard eraser is that gap secures bristle on plate body, and adjacent bristle is staggered.? Upper, left and right the three of quadrangle box while wall along while mouthful be the box body sealing strip being fabricated from a flexible material, have in the lower part of box body Dust-collecting box simultaneously has hinged box cover to close dust-collecting box, and the upper edge of box cover is lid mouth sealing strip.

The box body sealing strip and lid mouth sealing strip are by flexible material system as a further improvement of the utility model, At, and the edge of aforementioned seal item constitutes a plane.

Secured in the two sides side wall of box cover as a further improvement of the utility model, and connect and fix key, box cover with There is the clamping key of closing between the vertical edge of backboard box body, connects and fixes key and matched with clamping key, it is solid on the edge of the clamping key The key bracing wire of releasable operation is determined, backboard top is equipped with release key, and key bracing wire and release are by key connection.

Bristle is identical as the height of box body sealing strip on periphery as a further improvement of the utility model,.

The without dust pollution blackboard eraser of the utility model, smart structural design are carrying out the chalk writing on wiping blackboard When, due to there is vertical gap (chalk dust channel) between bristle is spaced and vertical setting of types, so in chalk ash particle self gravity Under the action of, it is fallen directly in ash box between gap, and the adhesive tape on bristle periphery is soft adhesive tape, and as bristle Height, it can be close to the bending and remaining of bristle with blackboard surface, and remaining scattered dust is made to be included the alternate seam of backwash hair In gap, most dust is all brought under control, dust granule no longer drifts everywhere, is conducive to the cleaning of classroom environment, air The high-quality health for being also beneficial to student, teacher；Meanwhile teacher no longer fear erase the board bring pneumoconiosis harm, can and Shi Gengxin blackboard content makes writing on the blackboard of the student by blackboard, clearly understands write content, achievees the effect that get twice the result with half the effort.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the without dust pollution blackboard eraser of the utility model.

Fig. 2 is schematic diagram of internal structure；

Fig. 3 is the sectional view of box body sealing strip.

Specific embodiment

With reference to the accompanying drawing to the without dust pollution blackboard eraser of utility model, it is described further.

Embodiment 1

The without dust pollution blackboard eraser of the utility model, is made of backboard 1 and blackboard eraser 2, and the backboard 1 is a rectangular box Body is embedded in blackboard eraser 2 in quadrangle box, quadrangle box upper, left and right three while wall along while mouthful be fabricated from a flexible material Box body sealing strip 3, have dust-collecting box 4 in the lower part of box body and there is hinged box cover 5 to close dust-collecting box 4, the upper edge of box cover 5 It is lid mouth sealing strip 6.

Embodiment 2

The without dust pollution blackboard eraser of the utility model, is made of backboard 1 and blackboard eraser 2, and the backboard 1 is a rectangular box Body is embedded in blackboard eraser 2 in quadrangle box, and the height of blackboard eraser 2 is less than the height of backboard 1, and blackboard eraser 2 is that gap secures on plate body Bristle 10 and perpendicular bristle 10 adjacent in the ranks is staggered realizes lateral all standing, longitudinal has vertical clearance gap (seam when wiping Gap is chalk dust channel) blackboard eraser.Upper, left and right the three of the quadrangle box on 2 periphery of blackboard eraser while wall along while mouthful be by flexibility Box body sealing strip 3 made of material；Since the height of blackboard eraser 2 is less than the height of backboard 1, after being aligned above it, 1 box body of backboard The part that lower part is vacated is dust-collecting box 4, and the two sides of dust-collecting box 4 are structure wide at the top and narrow at the bottom, and dust overflows in order to prevent, by plate Wipe 2 two vertical edges extension 12 extend to 1 equal length of backboard, and extension 12 be also structure wide at the top and narrow at the bottom and dust-collecting box 4 shape is identical,

Due to dust-collecting box 4 two sides be structure wide at the top and narrow at the bottom, the upper top of 4 side wall of dust-collecting box just with 3 phase of box body sealing strip Alignment, the box cover 5 that dust-collecting box 4 is gone to the bottom hinged close dust-collecting box 4, and the upper edge of box cover 5 is lid mouth sealing strip 6, box body sealing strip 6 It offseting with the two sidewalls of dust-collecting box 4, box body sealing strip 3 and lid mouth sealing strip 6 are fabricated from a flexible material, and aforementioned seal item Edge constitutes a plane, and the section of above-mentioned sealing strip is following thick, above thin structure, thin part contact blackboard and Contact surface can random variation as shown in figure 3, flexible sealing strip seals make it when in use, chalk dust will not leak. Since the adhesive tape on bristle periphery is soft adhesive tape, and it is high as bristle, and sealing strip can be curved with the bending of bristle It is bent and remain and be close to blackboard surface, include remaining scattered dust in the alternate gap of backwash hair.

The utility model secures in the two sides side wall of box cover 5 connects and fixes key 11, and box cover 5 is vertical with 1 box body of backboard Have the clamping key 7 of closing between, connect and fix key 11 with clamping key 7 and match clamping, be clamped key 7 be mounted on backboard box body and Between extension 12, that is, connect 7 side walls that can be fixed in the box body side wall of backboard 1 or be fixed on extension 12 On, as shown in Fig. 2, secure the key bracing wire 8 releasably operated on the edge of the clamping key 7, key bracing wire 8 is from 1 box of backboard Extended between the 2 side wall gap of side wall and blackboard eraser of body at the top of blackboard eraser, 1 top of backboard is equipped with release key 9, key bracing wire 8 with Key 9 is discharged to connect.When needing to topple over chalk dust, release key 9 is pressed, key bracing wire 8 drives the clamping upward out card of key 7 Retainingf key 11 is connect, box cover 5 opens at once, chalk dust is poured out.

The utility model is on backboard, left and right three side is equipped with flexible material, can clear up chalk dust, can also protect Card dust will not leak, and protect teaching environment；The dust that blackboard eraser cleans up falls into the dust-collecting box of lower part, and dust-collecting box is hinged with box Lid, box cover and dust-collecting box seal closure guarantee that dust will not leak, and when End-of-Course or dust-collecting box are filled, flicking release is pressed Key, box cover lower section, dust is poured out；The utility model avoids dust and leaks, and ensure that teachers and students' teaching environment and living environment Cleaning, protect the health of teachers and students, improve student's learning efficiency.

The without dust pollution blackboard eraser of the utility model carries out wiping blackboard in use, holding without dust pollution blackboard eraser On chalk writing when, due to there is vertical gap (chalk dust channel) between bristle is spaced and vertical setting of types, so in chalk dust Under the action of particle self gravity, fallen directly in ash box between gap, wipe blackboard when movement should not it is too fast, firmly should not mistake Greatly, when pouring out chalk dust, blackboard eraser is held with the right hand, so that the tail portion of blackboard eraser is directed at dustbin, then uses index finger flicking It discharges key and by dust evacuation, then closes box cover after box cover is opened, wipe dust, can be used continuously.

In addition, usually putting the blackboard eraser for having contained ash has a bracket, and the blackboard eraser after is indicated by arrows, it is placed in On bracket of the desktop at 30 degree of angles, prevent the ash in ash box from flowing out, and when ash has been expired, the button above blackboard eraser can be pressed Pour out dust.

Claims (4)

1. without dust pollution blackboard eraser is made of backboard (1) and blackboard eraser (2), it is characterised in that backboard (1) is a quadrangle box, It is embedded in blackboard eraser (2) in quadrangle box, the blackboard eraser (2) is that gap secures bristle (10) on plate body, and adjacent bristle (10) staggered；Quadrangle box upper, left and right three while wall along while mouthful be the box body sealing strip being fabricated from a flexible material (3), there is dust-collecting box (4) in the lower part of box body and there is hinged box cover (5) to close dust-collecting box (4), the upper edge of box cover (5) is even Lid mouth sealing strip (6) is connect.

2. without dust pollution blackboard eraser as described in claim 1, it is characterised in that box body sealing strip (3) and lid mouth sealing strip (6) it is fabricated from a flexible material, and the edge of aforementioned seal item constitutes a plane.

3. without dust pollution blackboard eraser as claimed in claim 1 or 2, it is characterized in that fixed in the two sides side wall of box cover (5) It connects and fixes key (11), has the clamping key (7) of closing between box cover (5) and the vertical edge of backboard (1) box body, connect and fix key (11) it is matched with clamping key (7), the key bracing wire (8) releasably operated, backboard is secured on the edge of the clamping key (7) (1) top is equipped with release key (9), and key bracing wire (8) is connect with release key (9).

4. without dust pollution blackboard eraser as described in claim 1, it is characterised in that the box body sealing strip of bristle (10) and periphery (3) height is identical.