CN107379840A - A kind of self-cleaning blackboard eraser - Google Patents
A kind of self-cleaning blackboard eraser Download PDFInfo
- Publication number
- CN107379840A CN107379840A CN201710626131.4A CN201710626131A CN107379840A CN 107379840 A CN107379840 A CN 107379840A CN 201710626131 A CN201710626131 A CN 201710626131A CN 107379840 A CN107379840 A CN 107379840A
- Authority
- CN
- China
- Prior art keywords
- eraser
- ash
- self
- frame
- air inlet
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/04—Wiper holders
Abstract
The invention discloses a kind of self-cleaning blackboard eraser, the blackboard eraser includes eraser frame, double-deck wiping board, inhale apparatus for ash, drive device and bat apparatus for ash, eraser frame is rectangular configuration, groove is provided with the lower surface of eraser frame, the two side of groove is respectively equipped with a chute, chute is parallel with the lower surface of wiping board frame, double-deck wiping board is slidably mounted on chute by both sides, two buckles are also arranged with the lower surface of eraser frame, rotate to be provided with groove floor and clap apparatus for ash, apparatus for ash is clapped to be connected with each other with drive device, outer ring of the lower surface of the eraser frame along groove is additionally provided with several air suction openings, eraser frame side wall is provided with a circle hairbrush as ash retention equipment, air suction opening is connected with dust exhaust apparatus.The present invention can realize the automatic bat ash of blackboard eraser, while with wiping force dust exhaust apparatus can be driven to filter dirt absorption, and cost caused by using filter core is avoided using water filtration and is improved, the dust in wiping effectively is reduced, protects the health of user, easy to use.
Description
Technical field
The invention belongs to teaching aid technical field, and in particular to a kind of self-cleaning blackboard eraser.
Background technology
Blackboard eraser is a kind of conventional teaching aid, and traditional blackboard is wiped can produce many dusts in wiping process, now
Although there is Blackboard eraser capable of absorbing dust, still there are some clearly disadvantageous.Such as：It can be caused by the use of motor as drive device black
The cost of blackboard eraser is high, and wiping face can be hardened, it is necessary to pat after a long time use, easily produce substantial amounts of backhaul；Made using filter core
For filter, it is necessary to which frequently changing can not realize and recycle, not environmentally and the wasting of resources is caused.It is therefore desirable to design
A kind of new blackboard eraser solves the above problems.
The content of the invention
According to above the deficiencies in the prior art, the technical problems to be solved by the invention are to propose a kind of self-cleaning blackboard
Wipe, set by double-deck wiping face, another side realizes that bat is grey under the drive of drive device while a face blackboard wiping, drives simultaneously
Dynamic device, which drives, to be inhaled apparatus for ash dust suction water filtering device is realized into filtering, solve traditional blackboard can not dust suction clap ash and need
The problem of frequently changing filter core, there is the characteristics of easy to use, good dedusting effect, energy-conserving and environment-protective.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of self-cleaning blackboard eraser includes blackboard eraser
Frame, double-deck wiping board, inhale apparatus for ash, drive device and clap apparatus for ash, eraser frame is rectangular configuration, is provided with the lower surface of eraser frame
Groove, the two side of groove are respectively equipped with a chute, and chute is parallel with the lower surface of wiping board frame, and double-deck wiping board breaks away by two
It is dynamic to be arranged on chute, two buckles are also arranged with the lower surface of eraser frame, buckle is symmetrically arranged at chute both ends
, rotate to be provided with groove floor and clap apparatus for ash, clap apparatus for ash and be connected with each other with drive device, the lower surface edge of the eraser frame
The outer ring of groove is additionally provided with several air suction openings, and eraser frame side wall is provided with a circle hairbrush as ash retention equipment, air suction opening and dust suction
Device is connected.
As a preferred embodiment, the double-deck wiping board include carriage, rubber shock-absorbing layer, the first cleaning layer,
Second cleaning layer and sliding block, carriage middle part are provided with through hole, and rubber shock-absorbing layer is arranged in through hole, and buffer layer can be reduced effectively
The transmission of vibrations, the first cleaning layer is bonded with the one side of rubber shock-absorbing layer, rubber shock-absorbing layer is symmetrically simultaneously bonded with second
Cleaning layer, two cylindrical sliders are arranged with the two side of carriage, and two cylindrical slider is separately mounted to eraser frame
On chute in.The rolling cylinder that apparatus for ash is be arranged in parallel by several to be clapped to form, rolling cylinder, which horizontally rotates, is arranged on bottom portion of groove,
Rubber slab is provided with along generatrix direction on the outside of cylinder rolling, is connected in rotary cylinder axial location with drive device.Inhaling apparatus for ash includes
Second air inlet pipe, fan, the second escape pipe and self-balancing water filter, air suction opening will be with self-balancing waters by the second air inlet pipe
Filter is interconnected, and fan is arranged in the second air inlet pipe and the second escape pipe, and fan is driven by drive device, certainly flat
Hengshui filter is arranged on inside eraser frame.Wherein self-balancing water filter include cylindrical sump, the first air inlet pipe and
First escape pipe, cylindrical sump perpendicular grooves lower rotation are arranged in eraser frame, are provided with cylindrical shape sump and are used to store up
The cavity of filtering water is deposited, is provided with discharge outlet in the side wall of cylindrical sump, discharge outlet is connected with cavity, revolved in discharge outlet
There is closure, cylindrical sump side wall is additionally provided with balancing weight.One end home position of cylindrical sump is provided with air through hole, and first
Air inlet pipe is stretched into cavity through air through hole, and one end that the first air inlet pipe stretches into cavity is designed using U-tube, the first air inlet pipe
Corner is provided with check valve, and the first air inlet tube head is rotated and connected towards balancing weight, the other end of the first air inlet pipe and the second air inlet pipe
Connect, water-sealed bearing is provided between the second air inlet pipe and the first air inlet pipe.The cylindrical symmetrical one end center of circle of sump air through hole
Place is provided with exhaust through hole, and the first escape pipe is stretched into sump cavity through exhaust through hole, and the first escape pipe stretches into one end of cavity
The direction opposite towards balancing weight, the first escape pipe other end are connected with the second escape pipe by water-sealed bearing, the second escape pipe
It is fixed on the upper surface for leading to eraser frame in eraser frame.The first escape pipe stretch into cavity one end be provided with block water layer, it is described to block
Water layer is gauze.
Present invention has the advantages that:The present invention is set by double-deck wiping face, and another side exists while a face blackboard wiping
Realized under the drive of drive device and clap ash, while drive device drives suction apparatus for ash to realize dust suction water filtering device
Filter, wherein water filtering device can remain horizontal with the state of wiping, and filter water therein will not overflow in wiping process
Go out, there is the characteristics of easy to use, good dedusting effect, energy-conserving and environment-protective.
Brief description of the drawings
The content expressed by this specification accompanying drawing and the mark in figure are briefly described below：
Fig. 1 is the upward view of the self-cleaning blackboard eraser of the specific embodiment of the invention；
Fig. 2 is the sectional view of the self-cleaning blackboard eraser of the specific embodiment of the invention；
Fig. 3 is the structure chart of the drive device of the specific embodiment of the invention；
Fig. 4 is the structure chart of the self-balancing water filter of the specific embodiment of the invention；
Fig. 5 is the structure chart of the double-deck wiping board of the specific embodiment of the invention.
Wherein, 1, eraser frame, 2, hairbrush, 3, air suction opening, 4, chute, 5, double-deck wiping board, 6, buckle, 7, friction pulley, 8, rolling
Dynamic cylinder, 9, self-balancing water filter, 10, fan, the 11, second air inlet pipe, the 12, second escape pipe, 13, bevel gear, 14, unidirectional
Ratchet, 501, carriage, the 502, first cleaning layer, the 503, second cleaning layer, 504, rubber shock-absorbing layer, 505, cylindrical slider,
901st, cylindrical sump, the 902, first air inlet pipe, 903, check valve, the 904, first escape pipe, 905, water-sealed bearing, 906, counterweight
Block, 907, discharge outlet.
Embodiment
Below against accompanying drawing, by the description to embodiment, for example involved each component of embodiment of the invention
Shape, construction, the mutual alignment and annexation between each several part, the effect of each several part and operation principle, manufacturing process and
Operate with method etc., is described in further detail, to help those skilled in the art to inventive concept of the invention, technology
Scheme has more complete, accurate and deep understanding.
As Figure 1-5, a kind of self-cleaning blackboard eraser include eraser frame 1, double-deck wiping board 5, inhale apparatus for ash, drive device and
Apparatus for ash is clapped, eraser frame 1 is rectangular configuration, and groove is provided with the lower surface of eraser frame 1, and the two side of groove is respectively equipped with one
Chute 4, chute 4 is parallel with the lower surface of wiping board frame, and double-deck wiping board 5 is slidably mounted on chute 4 by both sides, double-deck wiping board 5
Including carriage 501, rubber shock-absorbing layer 504, the first cleaning layer 502, the second cleaning layer 503 and sliding block, the middle part of carriage 501 is set
There is through hole, rubber shock-absorbing layer 504 is arranged in through hole, and buffer layer can effectively reduce the transmission of vibrations, in rubber shock-absorbing layer 504
One side be bonded with the first cleaning layer 502, rubber shock-absorbing layer 504 is symmetrically simultaneously bonded with the second cleaning layer 503, when second wipe
When wiping layer 503 and shaking, cut down vibration energy by buffer layer, so as to produce less shadow to the first cleaning layer 502
Layer is rung, two cylindrical sliders 505 are arranged with the two side of carriage 501, two cylindrical slider 505 is separately mounted to
In chute 4 in eraser frame 1, two buckles 6 are also arranged with the lower surface of eraser frame 1, buckle 6 is symmetrically arranged at cunning
The both ends of groove 4, carriage 501 can be lifted by opening buckle 6, and the top that carriage 501 moves to symmetric position along chute 4 is put down
Carriage 501, then engaging upper buckle 6 can realize the upset of double-layer plate face so that the direction of adjustment cleaning layer as needed.
Groove floor, which rotates to be provided with, claps apparatus for ash, claps apparatus for ash and is connected with each other with drive device, is driven by drive device and clap apparatus for ash
Rotating and clap ash, clap the rolling cylinder 8 that apparatus for ash is be arranged in parallel by several and form, rolling cylinder 8, which horizontally rotates, is arranged on bottom portion of groove,
Rubber slab is provided with along generatrix direction rolling the outside of cylinder 8, rubber slab contacts with cleaning layer, is filled in rotary cylinder axial location and transmission
Connection is put, drives rotary cylinder to rotate when transmission device rotates, the rubber slab on rotary cylinder is back and forth patted towards bottom portion of groove
Cleaning layer is so as to which grieshoch be patted, simultaneously because middle be provided with buffer layer so that will not be by the ash of the cleaning layer of symmetric position
Shake off so that excessive dust will not be produced during blackboard wiping.
Outer ring of the lower surface of eraser frame 1 along groove is additionally provided with several air suction openings 3, and the side wall of eraser frame 1 is provided with a circle hair
Brush 2 is used as ash retention equipment so that prevents dust from overflowing during blackboard wiping, and is entered by air suction opening 3 and inhale apparatus for ash
In be collected.The suction apparatus for ash includes the second air inlet pipe 11, fan 10, the second escape pipe 12 and self-balancing water filter
9, air suction opening 3 and self-balancing water filter 9 are interconnected by the second air inlet pipe 11, and fan 10 is arranged on the He of the second air inlet pipe 11
In second escape pipe 12, fan 10 is driven by drive device, and fan 10 rotates the flowing that can will promote gas, the second outlet
Pipe 12 is used to discharge the air pressure balance in gas guarantee self-balancing water filter 9, and self-balancing water filter 9 is arranged on blackboard eraser
Inside frame 1.
Wherein self-balancing water filter 9 includes cylindrical sump 901, the first air inlet pipe 902 and the first escape pipe 904,
The cylindrical perpendicular grooves lower rotation of sump 901 is arranged in eraser frame 1, is provided with to be used to store to filter in cylindrical shape sump and is used
The cavity of water, discharge outlet 907 is provided with the side wall of cylindrical sump 901, discharge outlet 907 is connected with cavity, in discharge outlet 907
On be rotary with closure, waste water can be discharged by outwarding winding closure, and filter water is poured into cavity, and balancing weight is additionally provided with side wall
906.One end home position of cylindrical sump 901 is provided with air through hole, and the first air inlet pipe 902 stretches into cavity through air through hole
Interior, the outside of the first air inlet pipe 902 and air through hole Seal Design, one end that the first air inlet pipe 902 stretches into cavity is set using U-tube
Meter, U-tube corner are provided with check valve 903, and its U-shaped head is towards balancing weight 906, the other end and second of the first air inlet pipe 902
Air inlet pipe 11 is rotatablely connected, and water-sealed bearing 905 is provided between the second air inlet pipe 11 and the first air inlet pipe 902.Cylindrical sump
The symmetrical one end circle centre position of 901 air through hole is provided with exhaust through hole, and the first escape pipe 904 stretches into sump cavity through exhaust through hole
It is interior, one end of cavity is stretched into towards balancing weight 906 with exhaust through hole Seal Design, the first escape pipe 904 on the outside of the first inlet/outlet pipe
Opposite direction, the end that cavity is stretched into the first escape pipe 904 are enclosed with gauze as water layer is blocked, and the first escape pipe 904 is another
End is connected with the second escape pipe 12 by water-sealed bearing 905, and the second escape pipe 12 is fixed in eraser frame 1, and leads to eraser frame 1
Upper surface.The port of the first air inlet pipe 902 is submerged in water all the time during blackboard wiping, and outlet pipe port is always positioned at water
On plane.
Drive device includes friction pulley 7, power transmission shaft, single direction ratchet 14 and bevel gear 13, and friction pulley 7 is rotatably connected on blackboard eraser
The lower surface of frame 1, when erasing the board, friction pulley 7 is contacted with blackboard panel, and rotatory force is turned to list by friction pulley 7 by power transmission shaft
To ratchet 14, single direction ratchet 14 rotates with driving fan 10, because the when single direction ratchet 14 used, therefore fan 10 surpasses all the time
One direction rotates, and dust is sucked into apparatus for ash from suction port carries out filtration treatment, while passes through the transmission of bevel gear 13
The driving force of a part is driven into rotary cylinder, rotary cylinder, which rotates, drives rubber slab slap wiping surface realization to beat grey effect.
Operation principle：When needing blackboard wiping, friction pulley 7 contacts with blackboard surface, and the first wiping surface contacts with blackboard surface, the
One wiping surface rotates the letter written with chalk wiped clean on blackboard, simultaneously friction pulley 7, drives drive device to drive 10 turns of fan
Dynamic that chalk can be delivered into dust exhaust apparatus, the filter water that chalk dust enters in dust exhaust apparatus by air suction opening 3, dust is dissolved in water
In, the air after filtering is discharged, the self-balancing water filter 9 wherein in dust exhaust apparatus, can be with the difference for wiping angle
And rotate so that inlet end is submerged in water all the time, and outlet side does not allow liquid to flow out all the time on horizontal plane.And drive
Wheel rotation can drive the ash discharge plate on rotary cylinder to flop the second wiping surface simultaneously, by under the dust slap on the second wiping surface
Come.When the first wiping surface is stained with dust, then wiping surface can be changed, make the second clean wiping surface of slap towards blackboard surface, in
The first wiping surface towards bottom portion of groove, can flop the first wiping surface by the dust on the first wiping surface in wiping process simultaneously for this
Bat falls.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is employed, or without changing
Enter and the design of the present invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.This hair
Bright protection domain should be determined by the scope of protection defined in the claims.
Claims (8)
1. a kind of self-cleaning blackboard eraser, it is characterised in that the blackboard eraser includes eraser frame (1), double-deck wiping board (5), inhales ash dress
Put, drive device and clap apparatus for ash, eraser frame (1) is rectangular configuration, and groove is provided with the lower surface of eraser frame (1), groove
Two side is respectively equipped with a chute (4), and chute (4) is parallel with the lower surface of wiping board frame, and double-deck wiping board (5) both sides are slidably installed
On chute (4), two buckles (6) are also arranged with the lower surface of eraser frame (1), buckle (6) is symmetrically arranged at cunning
Groove (4) both ends, rotate to be provided with groove floor and clap apparatus for ash, clap apparatus for ash and be connected with each other with drive device, the eraser frame
(1) outer ring of the lower surface along groove is additionally provided with several air suction openings (3), and eraser frame (1) side wall is provided with circle hairbrush (2) conduct
Ash retention equipment, air suction opening (3) are connected with dust exhaust apparatus.
2. self-cleaning blackboard eraser according to claim 1, it is characterised in that the double-deck wiping board (5) includes carriage
(501), rubber shock-absorbing layer (504), the first cleaning layer (502), the second cleaning layer (503) and sliding block, carriage (501) middle part are set
There is through hole, rubber shock-absorbing layer (504) is arranged in through hole, and buffer layer can effectively reduce the transmission of vibrations, in rubber shock-absorbing layer
(504) one side is bonded with the first cleaning layer (502), and rubber shock-absorbing layer (504) is symmetrically simultaneously bonded with the second cleaning layer
(503) two cylindrical sliders (505), two cylindrical slider (505) point, are arranged with the two side of carriage (501)
In chute (4) that An Zhuan be in eraser frame (1).
3. self-cleaning blackboard eraser according to claim 1, it is characterised in that the bat apparatus for ash is be arranged in parallel by several
Rolling cylinder (8) composition, roll cylinder (8) and horizontally rotate and is arranged on bottom portion of groove, be provided with rolling on the outside of cylinder (8) along generatrix direction
Rubber slab, it is connected in rotary cylinder axial location with drive device.
4. self-cleaning blackboard eraser according to claim 1, it is characterised in that the suction apparatus for ash includes the second air inlet pipe
(11), fan (10), the second escape pipe (12) and self-balancing water filter (9), air suction opening (3) pass through the second air inlet pipe (11)
It will be interconnected with self-balancing water filter (9), fan (10) is arranged on the second air inlet pipe (11) and the second escape pipe (12)
Interior, fan (10) is driven by drive device, and it is internal that self-balancing water filter (9) is arranged on eraser frame (1).
5. self-cleaning blackboard eraser according to claim 4, it is characterised in that the wherein self-balancing water filter (9)
Including cylindrical sump (901), the first air inlet pipe (902) and the first escape pipe (904), cylindrical sump (901) perpendicular grooves
Lower rotation is arranged in eraser frame (1), the cavity for being used for storing filtering water is provided with cylindrical shape sump, in cylindrical water
The side wall in storehouse (901) is provided with discharge outlet (907), and discharge outlet (907) is connected with cavity, and sealing is rotary with discharge outlet (907)
Lid, cylindrical sump (901) side wall are additionally provided with balancing weight (906).
6. self-cleaning blackboard eraser according to claim 5, it is characterised in that one end circle of the cylindrical sump (901)
Heart position is provided with air through hole, and the first air inlet pipe (902) is stretched into cavity through air through hole, and the first air inlet pipe (902) stretches into
One end of cavity is designed using U-tube, and the first air inlet pipe (902) corner is provided with check valve (903), the first air inlet pipe (902)
Head is towards balancing weight (906), and the other end and the second air inlet pipe (11) of the first air inlet pipe (902) are rotatablely connected, in the second air inlet
Water-sealed bearing (905) is provided between pipe (11) and the first air inlet pipe (902).
7. self-cleaning blackboard eraser according to claim 5, it is characterised in that cylindrical sump (901) air through hole
Symmetrical one end circle centre position is provided with exhaust through hole, and the first escape pipe (904) is stretched into sump cavity through exhaust through hole, and first goes out
Tracheae (904) stretches into one end of cavity towards the opposite direction of balancing weight (906), the first escape pipe (904) other end and second
Escape pipe (12) is connected by water-sealed bearing (905), and the second escape pipe (12), which is fixed in eraser frame (1), leads to eraser frame (1)
Upper surface.
8. self-cleaning blackboard eraser according to claim 7, it is characterised in that described to stretch into sky in the first escape pipe (904)
One end of chamber is provided with and blocks water layer, and the water layer that blocks is gauze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626131.4A CN107379840A (en) | 2017-07-27 | 2017-07-27 | A kind of self-cleaning blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626131.4A CN107379840A (en) | 2017-07-27 | 2017-07-27 | A kind of self-cleaning blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107379840A true CN107379840A (en) | 2017-11-24 |
Family
ID=60341858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710626131.4A Pending CN107379840A (en) | 2017-07-27 | 2017-07-27 | A kind of self-cleaning blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107379840A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208251A (en) * | 2020-10-22 | 2021-01-12 | 莫仁媚 | Movable blackboard eraser and blackboard eraser box matched with same for dust removal |
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| CN102794076A (en) * | 2012-07-18 | 2012-11-28 | 樊荣 | Gas deduster |
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| CN204414974U (en) * | 2015-02-11 | 2015-06-24 | 唐英梅 | A kind of blackboard eraser |
| CN104786709A (en) * | 2015-04-24 | 2015-07-22 | 上海理工大学 | Dual dust collection type blackboard eraser |
| CN204586264U (en) * | 2015-04-15 | 2015-08-26 | 严慈 | A kind of dust-removing blackboard eraser |
| CN106313984A (en) * | 2016-08-30 | 2017-01-11 | 苏州凯丽达电器有限公司 | Blackboard eraser with dust collector |
| CN205929937U (en) * | 2016-05-20 | 2017-02-08 | 武汉科技大学 | Double -sided blackboard brush |
| CN206121433U (en) * | 2016-11-01 | 2017-04-26 | 天津海泰市政绿化有限公司 | Dust -removal and noise -reduction device |
| CN106739696A (en) * | 2017-01-24 | 2017-05-31 | 杨桢 | The automatic blackboard eraser cleared up and collect dust |
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|---|---|---|---|---|
| CN2326453Y (en) * | 1997-10-30 | 1999-06-30 | 王婷 | Self-cleaning type whiteboard eraser |
| KR20040016962A (en) * | 2004-02-04 | 2004-02-25 | 박동철 | a glass window cleaner |
| CN201068044Y (en) * | 2007-07-03 | 2008-06-04 | 李芋葶 | Environmental protection two-side eraser |
| CN201102424Y (en) * | 2007-11-20 | 2008-08-20 | 刘立超 | Two-sided alternation dust-removing blackboard eraser |
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| CN102794076A (en) * | 2012-07-18 | 2012-11-28 | 樊荣 | Gas deduster |
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| CN204414968U (en) * | 2014-12-08 | 2015-06-24 | 都帅 | A kind of multifunctional blackboard eraser |
| CN204414974U (en) * | 2015-02-11 | 2015-06-24 | 唐英梅 | A kind of blackboard eraser |
| CN204586264U (en) * | 2015-04-15 | 2015-08-26 | 严慈 | A kind of dust-removing blackboard eraser |
| CN104786709A (en) * | 2015-04-24 | 2015-07-22 | 上海理工大学 | Dual dust collection type blackboard eraser |
| CN205929937U (en) * | 2016-05-20 | 2017-02-08 | 武汉科技大学 | Double -sided blackboard brush |
| CN106313984A (en) * | 2016-08-30 | 2017-01-11 | 苏州凯丽达电器有限公司 | Blackboard eraser with dust collector |
| CN206121433U (en) * | 2016-11-01 | 2017-04-26 | 天津海泰市政绿化有限公司 | Dust -removal and noise -reduction device |
| CN106739696A (en) * | 2017-01-24 | 2017-05-31 | 杨桢 | The automatic blackboard eraser cleared up and collect dust |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208251A (en) * | 2020-10-22 | 2021-01-12 | 莫仁媚 | Movable blackboard eraser and blackboard eraser box matched with same for dust removal |
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Application publication date: 20171124 |
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