CN108437667A - A kind of multifunctional blackboard eraser dust-extraction unit - Google Patents

A kind of multifunctional blackboard eraser dust-extraction unit Download PDF

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Publication number
CN108437667A
CN108437667A CN201810276796.1A CN201810276796A CN108437667A CN 108437667 A CN108437667 A CN 108437667A CN 201810276796 A CN201810276796 A CN 201810276796A CN 108437667 A CN108437667 A CN 108437667A
Authority
CN
China
Prior art keywords
dust
chalk
blackboard eraser
storage chamber
shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810276796.1A
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Chinese (zh)
Other versions
CN108437667B (en
Inventor
徐成明
陈天龙
侯克俊
陈篡修
汪达
徐如辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Zhongwei Research And Teaching Instrument Research And Development Co Ltd
Original Assignee
Wuhu Zhongwei Research And Teaching Instrument Research And Development Co Ltd
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Priority to CN201810276796.1A priority Critical patent/CN108437667B/en
Publication of CN108437667A publication Critical patent/CN108437667A/en
Application granted granted Critical
Publication of CN108437667B publication Critical patent/CN108437667B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00Blackboard or slate cleaning devices
    • B43L21/02Blackboard or slate cleaning devices with means for absorbing the chalk dust
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00Blackboard or slate cleaning devices
    • B43L21/04Wiper holders

Abstract

The invention discloses a kind of multifunctional blackboard eraser dust-extraction units, including shell, housing mid-section position is provided with shell divider wall, shell is divided into dust storage chamber and power drive room, it is provided with the trepanning of connection dust storage chamber and power drive room on shell divider wall, dust removal assembly and collection assembly of dust are installed on dust storage chamber, power drive indoor location has dust absorption fan and power supply, power supply provides power for the work of dust absorption fan and dust removal assembly, and chalk fixing device is also equipped on shell;The present invention carries out the cleaning of chalk dust using closed shell, avoid dust floating in air, reached cleaning effect, and the storage of chalk of the setting specification of chalk fixing device avoids chalk and directly contacted with dais and make dais dirty, keeps dais neat and artistic;The setting of rubber or the traveling wheel of flexible plastic material avoids blackboard eraser when not in use, and wiper makes plane dirty, ensure that the clean and tidy of plane, while in turn avoiding traveling wheel and skidding with blackboard surface, ensure that cleaning effect.

Description

A kind of multifunctional blackboard eraser dust-extraction unit
Technical field
The present invention relates to teaching aid technical field, specifically a kind of multifunctional blackboard eraser dust-extraction unit.
Background technology
Usual teacher, which is submitted a written statement to a higher authority using chalk in blackboard, writes into capable teaching, and is wiped using blackboard eraser.Because what chalk generated There are many chalk dust capacity, thus when erasing the board usually can side be close to and fall chalk dust, cause air pollution, directly endanger teacher and Raw health can cause the occupational disease of teacher when serious;And cause blackboard eraser not since the chalk dust on blackboard eraser is too many Totally, it influences to write and read, it is necessary to can be just continuing with after often patting the chalk dust on blackboard eraser totally;And it pats black Chalk dust but will be caused to disperse everywhere when blackboard eraser, cause air pollution, influence the health of people.Currently, various kinds of schools In teaching, although the use of audio-visual education programme and erasable pen is more and more universal.But undeniably, blackboard is still a kind of big The basic educational aid used is measured, also many teachers are write with chalk on blackboard, and still a large amount of use is without suction The old-fashioned blackboard eraser of the attached felt hair knot structure of plank of dirt function;Chalk without place storage during use because often lose On dais, it is easy to make dais dirty in this way, and influence the beauty at dais.
Invention content
According to the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a kind of multifunctional blackboard eraser Dust-extraction unit.
The present invention solves its technical problem using following technical scheme to realize:
A kind of multifunctional blackboard eraser dust-extraction unit, including shell, housing mid-section position are provided with shell divider wall, by shell It is divided into dust storage chamber and power drive room, the trepanning of connection dust storage chamber and power drive room, dust storage chamber is provided on shell divider wall On dust removal assembly and collection assembly of dust be installed, power drive indoor location has a dust absorption fan and power supply, power supply be dust absorption fan with The work of dust removal assembly provides power, and chalk fixing device is also equipped on shell.
Tapping is equipped with dirt filtrating screen.
The front of dust storage chamber offers suction inlet, and the bottom surface of dust storage chamber offers dust-exhausting port, dust is equipped in dust storage chamber Bucket, dust hopper are connected with dust-exhausting port, and dust removal assembly is mounted on the top of dust hopper, and extends to dust storage chamber by suction inlet Outside, collection assembly of dust is mounted on the outside of dust storage chamber, and is connected with dust-exhausting port.
Dust removal assembly includes dedusting motor and blackboard eraser, and dedusting motor is mounted in dust storage chamber, the output end of dedusting motor Brush plate is installed, brush plate is equipped with hairbrush, and blackboard eraser is mounted on by dismountable mode on suction inlet, and one side extends Go out outside dust storage chamber, another side is in contact with hairbrush.
Collection assembly of dust includes dust collection bag, and dust collection bag is connected by dismountable mode with dust-exhausting port.
Blackboard eraser includes fixed frame, is respectively equipped with a supporting rod on two upper apex angle sides of fixed frame, supporting rod passes through The mode being slidably connected is mounted on fixed frame, and tensioning spring is equipped between supporting rod and fixed frame, passes through axis on supporting rod The mode for holding connection is equipped with No.1 support roller;It is installed by way of bearing connection respectively on two lower apex angle sides of fixed frame There is the axis of rolling, No. two support rollers are installed in the middle part of the axis of rolling, the both ends of the axis of rolling are mounted on traveling wheel, also pacify on blackboard eraser Equipped with wiper, wiper structure annular in shape bypasses No.1 support roller and No. two support rollers successively.
The material of traveling wheel is rubber or flexible plastic, and when blackboard eraser is placed in the plane, traveling wheel supports blackboard eraser, makes There are gaps between wiper and plane.
Chalk fixing device includes chalk holder, and chalk holder is mounted on shell, if being laid with dry chalk chamber on chalk holder, Chalk intracavitary is equipped with support base, and ejection-spring is equipped between the bottom and support base of chalk chamber, and the downside level of chalk holder is set There are several through-holes, through-hole to correspond and penetrate through with chalk chamber, the middle part of through-hole is equipped with the spring mounting hole of co-axial line, through-hole It is interior resetting spring to be installed through being equipped with button between button and spring mounting hole, chalk intracavitary it is opposite with mounting hole one Side is equipped with elastic plectrum, and the bottom of support base is equipped with stay hook, and stay hook can be fitted into freely in through-hole.
Hook is additionally provided on shell.
The beneficial effects of the invention are as follows:
The present invention carries out the cleaning of chalk dust using closed shell, avoids dust floating in air, has reached clear Clean effect, the setting specification of the chalk fixing device storage of chalk, avoids chalk and is directly contacted with dais and make dais dirty, Keep dais neat and artistic;The setting of rubber or the traveling wheel of flexible plastic material avoids blackboard eraser when not in use, and wiper is by plane It makes dirty, ensure that the clean and tidy of plane, while in turn avoiding traveling wheel and skidding with blackboard surface, ensure that cleaning effect.
Description of the drawings
The content expressed by this specification attached drawing and the label in figure are briefly described below:
Fig. 1 is the structural schematic diagram of the multifunctional blackboard eraser dust-extraction unit of the specific implementation mode of the present invention;
Fig. 2 is the partial sectional view of the multifunctional blackboard eraser dust-extraction unit of the specific implementation mode of the present invention;
Fig. 3 is the structural schematic diagram of the blackboard eraser of the specific implementation mode of the present invention;
Fig. 4 is the structural schematic diagram of the chalk fixing device of the specific implementation mode of the present invention.
Specific implementation mode
Below by the description to embodiment, the shape of for example involved each component of specific implementation mode of the invention, structure It makes, the mutual alignment between each section and connection relation, the effect of each section and operation principle, manufacturing process and the side of operating with Method etc., is described in further detail, completeer to help those skilled in the art to have the inventive concept of the present invention, technical solution Whole, accurate and deep understanding.
A kind of multifunctional blackboard eraser dust-extraction unit, including shell 1,1 intermediate position of shell are provided with divider wall 2, divider wall 2 Shell 1 is divided for dust storage chamber and power drive room, the trepanning 3 of connection dust storage chamber and power drive room is provided on divider wall 2, is collected Dust removal assembly 4 and collection assembly of dust 5 are installed, it is to inhale that power drive indoor location, which has dust absorption fan 6 and power supply 7, power supply 7, on dirt room The work of dirt wind turbine 6 and dust removal assembly 4 provides power, and chalk fixing device 8 is also equipped on shell 1.Wherein, power supply 7 can be with It is rechargeable battery, power switch 71 is additionally provided in the present apparatus, turn on the power switch 71, power supply 7 drives dust absorption fan 6 to work, and inhales Dirt wind turbine 6 makes dust storage chamber generate negative pressure, the chalk dust on 4 erasing blackboard of dust removal assembly, since dust storage chamber is subnormal ambient, chalk Ash is inhaled into dust storage chamber, and chalk dust is fallen under the double action of gravity and wind in collection assembly of dust 5, at the same power supply 7 be except The work of dirt component 4 provides power, and the dust of itself is swept and dropped into collection assembly of dust 5 by dust removal assembly 4, and the present invention is using closed Shell 1 carries out the cleaning of chalk dust, avoids dust floating in air, has reached cleaning effect, chalk fixing device 8 is set The storage for setting specification chalk avoids chalk and is directly contacted with dais and make dais dirty, keeps dais neat and artistic.
Dirt filtrating screen 31 is installed at trepanning 3.Wherein, dirt filtrating screen 31 keeps apart dust storage chamber and power drive room, both ensures While dust absorption fan 6 is that dust storage chamber generates negative-pressure sucking, and completely cuts off chalk dust and entered in dust absorption fan 6, improves suction The service life of dirt wind turbine 6.
The front of dust storage chamber offers suction inlet 11, and the bottom surface of dust storage chamber offers dust-exhausting port 12, is equipped in dust storage chamber Dust hopper 13, dust hopper 13 are connected with dust-exhausting port 12, and dust removal assembly 4 is mounted on the top of dust hopper 13, and passes through suction inlet 11 extend to outside dust storage chamber, and collection assembly of dust 5 is mounted on the outside of dust storage chamber, and is connected with dust-exhausting port 12.Wherein, chalk dust exists It first falls into dust hopper 13 under the action of gravity, and is eventually fallen into collection assembly of dust 5 by dust-exhausting port 12.
Dust removal assembly 4 includes dedusting motor 41 and blackboard eraser 42, and dedusting motor 41 is mounted in dust storage chamber, dedusting motor 41 Output end brush plate 43 is installed, brush plate 43 is equipped with hairbrush 44, and blackboard eraser 42 is mounted on by dismountable mode to be inhaled On dirt mouth 11, extend outside dust storage chamber on one side, another side is in contact with hairbrush 44.Wherein, blackboard eraser 42 is black for wiping The chalk dust of plate surface, during traveling, the face wiper 428 for being stained with chalk dust rotates in dust storage chamber blackboard eraser 42, Dedusting motor 41 works, and dedusting motor 41 drives brush plate 43 to rotate, and brush plate 43 is rotated with electric brush 44, the hairbrush 44 of rotation Wiper 428 to being stained with chalk dust cleans, and the wiper 428 after cleaning rotates out of dust storage chamber again, simultaneously because at dust storage chamber In the state of negative pressure, the dust that blackboard wiping generates is sucked by the gap between blackboard eraser 42 and dust storage chamber in dust storage chamber, this Setting is realized cleans chalk dust in closed environment, avoids dust floating in air, causes to hinder to body Evil.
Collection assembly of dust 5 includes dust collection bag, and dust collection bag is connected by dismountable mode with dust-exhausting port 12.Its In, dust collection bag is made by micro- breathable cloth, ensure that being smoothed out for dedusting work.
Blackboard eraser 42 includes fixed frame 421, and a supporting rod 422 is respectively equipped on two upper apex angle sides of fixed frame 421, Supporting rod 422 is mounted on by way of being slidably connected on fixed frame 421, is equipped with and is opened between supporting rod 422 and fixed frame 421 Tight spring 423 is equipped with No.1 support roller 424 on supporting rod 422 by way of bearing connection;Under two of fixed frame 421 The axis of rolling 425 is installed by way of bearing connection respectively on apex angle side, the middle part of the axis of rolling 425 is equipped with No. two support rollers 426, the both ends of the axis of rolling 425 are mounted on traveling wheel 427, and wiper 428 is also equipped on blackboard eraser 42, and wiper 428 is annular in shape Structure bypasses No.1 support roller 424 and No. two support rollers 426 successively.Wherein, it is all provided on two of fixed frame 421 upper apex angle sides There are sliding slot, supporting rod 422 to be mounted in sliding slot, tensioning spring is installed between the end of supporting rod 422 and the bottom of sliding slot 423, when wiper 428 bypasses No.1 support roller 424 and No. two backing rolls, under the action of tensioning spring 423, wiper 428 is in Tensioning state, increases the frictional force between wiper 428 and No.1 support roller 424 and No. two support rollers 426, wiper 428 with it is solid The upper and lower surface for determining frame 421 is in contact, and the upper and lower surface of fixed frame 421 is used to support wiper 428, makes wiper 428 when in use There is certain intensity, when work, mobile blackboard wipes 42, and traveling wheel 427 rotates, and traveling wheel 427 drives the axis of rolling 425 to rotate, rolling Moving axis 425 drives No. two support rollers 426 to rotate, and No. two support rollers 426 drive wiper 428 to move, and wiper 428 is in No.1 support roller Circulatory motion is done between 424 and No. two support rollers 426, realizes the action that chalk dust is brought into dust storage chamber.
The material of traveling wheel 427 is rubber or flexible plastic, and when blackboard eraser 42 is placed in the plane, traveling wheel 427 supports Blackboard eraser 42, makes between wiper 428 and plane that there are gaps.Wherein, there are gaps between wiper 428 and plane, avoid black When not in use, wiper 428 makes plane dirty to blackboard eraser 42, ensure that the clean and tidy of plane, in use, to blackboard eraser 42 to the side of blackboard To certain active force is applied, because traveling wheel 427 is that certain deformation occurs for materials, the traveling wheels 427 such as rubber or flexible plastic, wipe Cloth 428 is in contact with blackboard, carries out the wiping work of blackboard, at the same traveling wheel 427 deform upon increase traveling wheel 427 with it is black The frictional force of plate avoids traveling wheel 427 and skids with blackboard surface, ensure that cleaning effect.
Chalk fixing device 8 includes chalk holder 81, and chalk holder 81 is mounted on shell 1, if being laid on chalk holder 81 Dry chalk chamber 82, chalk chamber 82 is interior to be equipped with support base 83, and ejection-spring 84 is equipped between the bottom and support base 83 of chalk chamber 82, The downside level of chalk holder 81 is equipped with several through-holes 85, and through-hole 85 is corresponded with chalk chamber 82 and penetrated through, the middle part of through-hole 85 Spring mounting hole 86 equipped with co-axial line, through being equipped with button 87 in through-hole 85, button 87 and spring mounting hole 86 it Between resetting spring 88 is installed, the side opposite with mounting hole is equipped with elastic plectrum 89, the bottom of support base 83 in chalk chamber 82 Equipped with stay hook 831, stay hook 831 can freely fit into through-hole 85.In use, chalk is put into chalk chamber 82, and Chalk is pressed down on, chalk drives support base 83 to move down, when stay hook 831 is moved to before through-hole 85, elastic plectrum 89 Stay hook 831 is pushed to be moved in through-hole 85, support base 83 is fixed on the downside of chalk chamber 82;When needing using chalk, click Stay hook 831 is released through-hole 85 by button 87, button 87, and support base 83 pops up under the action of ejection-spring 84, is supported Seat 83 drives and is popped up in chalk phase, release button 87, homing under the action of resetting spring 88 of button 87, this setting specification The storage of chalk, avoids chalk and is directly contacted with dais and make dais dirty, keep dais neat and artistic.
Hook 9 is additionally provided on shell 1.Wherein, the present apparatus when not in use, is hung over by hook 9 on the wall beside blackboard, It is neat and artistic.
Application method is:
Step 1: blackboard eraser 42 is mounted on by air suction opening on shell 1,71 are turned on the power switch, power supply 7 drives dust suction Wind turbine 6 works, and dust absorption fan 6 makes dust storage chamber generate negative pressure;
Step 2: applying certain active force to the direction of blackboard to blackboard eraser 42, certain shape occurs for traveling wheel 427 Becoming, wiper 428 is in contact with blackboard, and mobile blackboard wipes 42, and traveling wheel 427 rotates, and traveling wheel 427 drives the axis of rolling 425 to rotate, The axis of rolling 425 drives No. two support rollers 426 to rotate, and No. two support rollers 426 drive wiper 428 to move, and wiper 428 is supported in No.1 Circulatory motion is done between roller 424 and No. two support rollers 426, the face wiper 428 for being stained with chalk dust rotates in dust storage chamber, dedusting Motor 41 works, and dedusting motor 41 drives brush plate 43 to rotate, and brush plate 43 is rotated with electric brush 44, and the hairbrush 44 of rotation is to being stained with The wiper 428 of full chalk dust is cleaned, and the wiper 428 after cleaning rotates out of dust storage chamber again, simultaneously because dust storage chamber is in negative The state of pressure, the dust that blackboard wiping generates are sucked by the gap between blackboard eraser 42 and dust storage chamber in dust storage chamber;The present invention The cleaning that chalk dust is carried out using closed shell is avoided dust floating in air, has reached cleaning effect, chalk is fixed The storage of chalk of the setting specification of device, avoids chalk and is directly contacted with dais and make dais dirty, keep dais neat and artistic; The setting of rubber or the traveling wheel of flexible plastic material avoids blackboard eraser when not in use, and wiper makes plane dirty, ensure that plane It is clean and tidy, while in turn avoiding traveling wheel and skidding with blackboard surface, ensure that cleaning effect.
The present invention is exemplarily described above, it is clear that present invention specific implementation is not subject to the restrictions described above, As long as using the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress, or not improved this is sent out Bright design and technical solution directly applies to other occasions, within protection scope of the present invention.The protection of the present invention Range should be determined by the scope of protection defined in the claims.

Claims (9)

1. a kind of multifunctional blackboard eraser dust-extraction unit, it is characterised in that:Including shell, the housing mid-section position is provided with shell Shell is divided into dust storage chamber and power drive room by divider wall, and connection dust storage chamber and power drive room are provided on shell divider wall Trepanning, dust removal assembly and collection assembly of dust are installed on dust storage chamber, power drive indoor location has dust absorption fan and power supply, power supply Power is provided for the work of dust absorption fan and dust removal assembly, chalk fixing device is also equipped on shell.
2. multifunctional blackboard eraser dust-extraction unit according to claim 1, it is characterised in that:The tapping is equipped with dust filtering Net.
3. multifunctional blackboard eraser dust-extraction unit according to claim 1, it is characterised in that:The front of the dust storage chamber opens up There are suction inlet, the bottom surface of dust storage chamber to offer dust-exhausting port, dust hopper is installed in dust storage chamber, dust hopper is connected with dust-exhausting port, Dust removal assembly is mounted on the top of dust hopper, and is extended to outside dust storage chamber by suction inlet, and collection assembly of dust is mounted on dust storage chamber Outside, and be connected with dust-exhausting port.
4. multifunctional blackboard eraser dust-extraction unit according to claim 1, it is characterised in that:The collection assembly of dust includes dust Collecting bag, dust collection bag are connected by dismountable mode with dust-exhausting port.
5. multifunctional blackboard eraser dust-extraction unit according to claim 1, it is characterised in that:The dust removal assembly includes dedusting Motor and blackboard eraser, dedusting motor are mounted in dust storage chamber, and the output end of dedusting motor is equipped with brush plate, and brush plate is equipped with Hairbrush, blackboard eraser are mounted on suction inlet by dismountable mode, are extended outside dust storage chamber on one side, another side and hairbrush It is in contact.
6. multifunctional blackboard eraser dust-extraction unit according to claim 5, it is characterised in that:The blackboard eraser includes fixing Frame is respectively equipped with a supporting rod on two of fixed frame upper apex angle sides, and supporting rod is mounted on solid by way of being slidably connected Determine on frame, tensioning spring is installed between supporting rod and fixed frame, No.1 is installed by way of bearing connection on supporting rod Support roller;The axis of rolling, the middle part of the axis of rolling are installed by way of bearing connection respectively on two lower apex angle sides of fixed frame No. two support rollers are installed, the both ends of the axis of rolling are mounted on traveling wheel, wiper are also equipped on blackboard eraser, wiper is annularly tied Structure bypasses No.1 support roller and No. two support rollers successively.
7. multifunctional blackboard eraser dust-extraction unit according to claim 6, it is characterised in that:The material of the traveling wheel is rubber Glue or flexible plastic, when blackboard eraser is placed in the plane, traveling wheel supports blackboard eraser, makes between wiper and plane that there are gaps.
8. multifunctional blackboard eraser dust-extraction unit according to claim 1, it is characterised in that:The chalk fixing device includes Chalk holder, chalk holder is mounted on shell, if being laid with dry chalk chamber on chalk holder, chalk intracavitary is equipped with support base, chalk Ejection-spring is equipped between the bottom and support base of chamber, the downside level of chalk holder is equipped with several through-holes, through-hole and chalk chamber Correspond perforation, the middle part of through-hole is equipped with the spring mounting hole of co-axial line, through being equipped with button in through-hole, button with Resetting spring is installed, the chalk intracavitary side opposite with mounting hole is equipped with elastic plectrum, support base between spring mounting hole Bottom is equipped with stay hook, and stay hook can be fitted into freely in through-hole.
9. multifunctional blackboard eraser dust-extraction unit according to claim 1, it is characterised in that:Extension is additionally provided on the shell Hook.
CN201810276796.1A 2018-03-30 2018-03-30 Multifunctional blackboard eraser dust removal device Active CN108437667B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109050126A (en) * 2018-09-19 2018-12-21 张子涵 A kind of push button ejection pen container
CN109484060A (en) * 2018-12-06 2019-03-19 吴灶弟 Multi-functional blackboard is used in a kind of new-type health type teaching
CN112208251A (en) * 2020-10-22 2021-01-12 莫仁媚 Movable blackboard eraser and blackboard eraser box matched with same for dust removal
CN112238696A (en) * 2019-11-15 2021-01-19 林超文 Dust-free environment-friendly blackboard writing device
CN112848768A (en) * 2021-03-29 2021-05-28 深圳市康冠商用科技有限公司 Multifunctional blackboard eraser

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CN2878091Y (en) * 2005-08-02 2007-03-14 周敏 Non-powered self-dedusting blackboard eraser
CN203623244U (en) * 2013-12-24 2014-06-04 王灿 Dust-removal blackboard eraser
CN205468070U (en) * 2016-03-01 2016-08-17 艾拜·阿巴尔 Chalk sleeve
CN106379092A (en) * 2016-09-12 2017-02-08 芜湖能盟信息技术有限公司 Multifunctional blackboard eraser
CN207045009U (en) * 2017-04-28 2018-02-27 邢筠秋 A kind of electric dust-proof blackboard eraser
CN107774601A (en) * 2017-12-01 2018-03-09 滁州学院 A kind of blackboard eraser dust-free clean device

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Publication number Priority date Publication date Assignee Title
CN2825318Y (en) * 2005-07-28 2006-10-11 北京艾发尔科技有限公司 Chalk powder collector
CN2878091Y (en) * 2005-08-02 2007-03-14 周敏 Non-powered self-dedusting blackboard eraser
CN203623244U (en) * 2013-12-24 2014-06-04 王灿 Dust-removal blackboard eraser
CN205468070U (en) * 2016-03-01 2016-08-17 艾拜·阿巴尔 Chalk sleeve
CN106379092A (en) * 2016-09-12 2017-02-08 芜湖能盟信息技术有限公司 Multifunctional blackboard eraser
CN207045009U (en) * 2017-04-28 2018-02-27 邢筠秋 A kind of electric dust-proof blackboard eraser
CN107774601A (en) * 2017-12-01 2018-03-09 滁州学院 A kind of blackboard eraser dust-free clean device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109050126A (en) * 2018-09-19 2018-12-21 张子涵 A kind of push button ejection pen container
CN109484060A (en) * 2018-12-06 2019-03-19 吴灶弟 Multi-functional blackboard is used in a kind of new-type health type teaching
CN112238696A (en) * 2019-11-15 2021-01-19 林超文 Dust-free environment-friendly blackboard writing device
CN112208251A (en) * 2020-10-22 2021-01-12 莫仁媚 Movable blackboard eraser and blackboard eraser box matched with same for dust removal
CN112848768A (en) * 2021-03-29 2021-05-28 深圳市康冠商用科技有限公司 Multifunctional blackboard eraser
CN112848768B (en) * 2021-03-29 2022-04-19 深圳市康冠商用科技有限公司 Multifunctional blackboard eraser

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