CN109094262A - Dust absorption blackboard eraser - Google Patents
Dust absorption blackboard eraser Download PDFInfo
- Publication number
- CN109094262A CN109094262A CN201811076625.0A CN201811076625A CN109094262A CN 109094262 A CN109094262 A CN 109094262A CN 201811076625 A CN201811076625 A CN 201811076625A CN 109094262 A CN109094262 A CN 109094262A
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- main body
- rubber roll
- exhaust fan
- eraser main
- 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
Abstract
Dust absorption blackboard eraser, including blackboard eraser main body, each several risers of setting of the two sides of the bottom setting of blackboard eraser main body, shaft is set between two corresponding risers, shaft passes through the middle part of rubber roll and is fixedly connected with rubber roll, rough layer is arranged in the periphery of rubber roll, driving wheel is arranged in the both ends of shaft, bull stick is arranged in the top of rubber roll, the both ends of bull stick and riser are rotatablely connected, bristle brush wheel is arranged in the middle part of bull stick, bristle brush wheel can be contacted with the rough layer on rubber roll surface, driven wheel is arranged in the both ends of bull stick and the corresponding position of driving wheel, it is connected between driving wheel and driven wheel by belt, collecting chamber is arranged in the side of blackboard eraser bottom part body bristle brush wheel, collecting chamber is connected to same root collecting pipe, the other end of collecting pipe is connected to the air inlet of exhaust fan, the air outlet of exhaust fan is connected to collection box.The present invention can easily by the chalk powder generated when erasing the board suck, thus avoid chalk dust be splashed to be absorbed by the body in air after influence human health.
Description
Technical field
The invention belongs to teaching equipment fields, specifically dust absorption blackboard eraser.
Background technique
Teacher need to often write and draw on the blackboard to explain.In a class it is necessary to it is erasable for several times, lower class hour, often
On hand, on sleeve or even on hair, shoulder one layer of white chalk dust is all being left.Every day, year after year, has worn down number
Chalk in terms of ten thousand inevitably sucks some chalk dusts from nostril during this.And long-term inhalation of chalk dust have it is following
Harm: the harm to lung: harm of the dust to teacher's body, it is most commonly seen with lung, in teaching process, chalk dust be easy to by
Lung is sucked, majority is delayed in alveolar, and by a series of stimulation, chemistry and immune effect can cause lung to lose,
Decline including inflammation in respiratory system and pulmonary ventilation function, common pulmonary disease has: chronic, acute pneumonia, lung cancer, pneumoconiosis
Deng；Harm to the upper respiratory tract: it be by the upper respiratory tract includes nose, pharynx, bronchus that chalk dust, which enters the approach of lung, at this
In the process, part dust can stay in the upper respiratory tract, mechanical stimulus and damage be generated to mucomembranous epithelial cell, for a long time in this ring
It works under border, a series of lesion can be caused, wherein the influence to nose most commonly induces rhinitis sicca, it is followed by plump
Property rhinitis, symptom is that mycteroxerosis, nasal obstruction, nasal membrane be congested, secretion increases；Influence to pharynx mainly induces chronic
Pharyngitis makes pharyngeal drying, and not well, pharyngalgia pharynx of coughing up phlegm is itched；Chronic bronchitis is mainly induced on bronchial influence, sometimes also
Asthma can be caused, in addition it is also possible to causing the canceration of the parts such as nasopharynx, bronchus；Harm to eyes: eyes are human body devices
Most accurate in official, most easily damaged one of organ, the main ingredient calcium carbonate of chalk dust, calcium oxide etc. are a kind of water-soluble objects
Matter dissolves easily in water, and generates alkaline matter, and if teacher is in teaching process, chalk dust is fallen into eye, stimulation lachrymal gland point
It secretes, tears hydrolyze calcium carbonate and generate alkaline matter, will seriously stimulate eye mucous membranes, cause mucosa injury, form chronic inflammation
Disease, it is also possible to induce the generation of myopia；Harm to skin: teacher in teaching process, be inevitably stained with by chalk dust
On hand, while floating on the granule dust in air also and can fall in teacher's hair, on the face and on neck, it is irritating to skin membrane
Effect generates alkaline matter if hot summer days meet sweat solution, just bigger to mucocutaneous stimulation, because human skin is survived
Environment be weak acid environment, destroy the basic living environment of skin under the effect of dust alkalinity in this way, chalk dust makes skin
Skin becomes dry, coarse, and feels with itching, keeps human body uncomfortable, serious person can cause acne, epifolliculitis, pyoderma, skin
Chap and a large amount of trichomadesis influence and disturb teacher's normal work and life；Harm to ear: chalk dust enters external ear
Road is mixed in sebum, can form ceruminal plug, if long-term in this way, can cause the generation of ear inflammation.
Summary of the invention
The present invention provides dust absorption blackboard eraser, to solve defect in the prior art.
The present invention is achieved by the following technical programs:
Dust absorption blackboard eraser, including blackboard eraser main body, each several risers of setting of the two sides of the bottom setting of the blackboard eraser main body, two
Shaft is set between a corresponding riser, and the shaft passes through the middle part of rubber roll and is fixedly connected with rubber roll, institute
Rough layer is arranged in the periphery for the rubber roll stated, and driving wheel, the top of the rubber roll is arranged in the both ends of the shaft
Bull stick is set, and the both ends of the bull stick and riser are rotatablely connected, and bristle brush wheel, the hairbrush is arranged in the middle part of the bull stick
Wheel can be contacted with the rough layer on rubber roll surface, and driven wheel is arranged in the both ends of bull stick and the corresponding position of driving wheel, described
It is connected between driving wheel and driven wheel by belt, collecting chamber is arranged in the side of the blackboard eraser bottom part body bristle brush wheel, described
Collecting chamber be connected to same root collecting pipe, closed at one end, the other end and exhausting of the collecting pipe of the collecting pipe
The air inlet of machine is connected to, and the air outlet of the exhaust fan is connected to collection box, the collection box and the fixed company of blackboard eraser main body
It connects, a side bottom of the collection box is connected to one end of cleaning pipe, and the other end and pipe lid screw thread of the cleaning pipe connect
It connects, battery case is set in the blackboard eraser main body, the battery case and exhaust fan are electrically connected, the top of the collection box
Exhaust fan switch button is set, and the exhaust fan switch button and exhaust fan are electrically connected.
Dust absorption blackboard eraser as described above, the blackboard eraser main body is interior to be arranged water storage cavity, setting in the middle part of the water storage cavity
Baffle, the baffle bottom are open setting, and cavity top end is connected to one end of water inlet pipe on the left of the baffle, it is described into
The other end of water pipe is located at blackboard eraser body top and is threadedly coupled with pipe cap, cavity top and outlet pipe on the left of the baffle
One end connection, is arranged pressure valve on the outlet pipe, and the other end of the outlet pipe is connected to transverse tube, the transverse tube and
The top of several inclined tubes is connected to, and the number of the inclined tube is identical as rubber roll number, and the inclined tube is located at accordingly rubber
The side of rubber-surfaced roll wheel is arranged pressing plate in the cavity on the right side of the baffle, screw rod, the screw rod is arranged above the pressing plate
Bottom and the top center position of pressing plate be rotatablely connected, the blackboard eraser main body opens up screw hole with the corresponding position of screw rod,
The screw rod is threadedly coupled with screw hole, and soft set is arranged in the top of the screw rod.
Handle is arranged in the top of dust absorption blackboard eraser as described above, the blackboard eraser main body.
Dust cover is arranged in the bottom periphery of dust absorption blackboard eraser as described above, the blackboard eraser main body.
Chalk slot, the chalk slot is arranged in the side of dust absorption blackboard eraser as described above, the blackboard eraser main body
Interior setting elastic rubber ring.
The invention has the advantages that the present invention can easily suck the chalk powder generated when erasing the board, to avoid powder
Ash is splashed to be absorbed by the body in air after influence human health.The present invention passes through exhaust fan switch button when in use and opens
Exhaust fan, then to chalk-writing or so wipe it is dynamic make to contact at rough layer and chalk-writing and by under chalk powder eraser, chalk dust exists
Pass through collecting chamber under the drive of exhaust fan and collecting pipe eventually enters into collection box, and periodically by cleaning pipe in collection box
Chalk dust is cleared up, and by driving wheel, driven wheel and belt composition pulley apparatus drive bar rotation to
Bristle brush wheel is driven to clear up the chalk dust adhered on rough layer, it is easy to operate, it is easy to use.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the enlarged drawing of the A direction view of Fig. 1.
Appended drawing reference: 1, blackboard eraser main body；2, riser；3, shaft；4, rubber roll；5, rough layer；6, driving wheel；7, turn
Bar；8, bristle brush wheel；9, driven wheel；10, belt；11, collecting chamber；12, collecting pipe；13, exhaust fan；14, elastic rubber ring；15,
Collection box；16, cleaning pipe；17, Guan Gai；18, battery case；19, exhaust fan switch button；20, water storage cavity；21, baffle；22, into
Water pipe；23, pipe cap；24, outlet pipe；25, pressure valve；26, transverse tube；27, inclined tube；28, pressing plate；29, screw rod；30, screw hole；31,
Soft set；32, handle；33, dust cover；34, chalk slot.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Dust absorption blackboard eraser, including blackboard eraser main body 1, each several risers of setting of the two sides of the bottom setting of the blackboard eraser main body 1
2, shaft 3 is set between two corresponding risers 2, and the shaft 3 passes through the middle part of rubber roll 4 and solid with rubber roll 4
Rough layer 5 is arranged in fixed connection, the periphery of the rubber roll 4, and driving wheel 6, the rubber is arranged in the both ends of the shaft 3
Bull stick 7 is arranged in the top of rubber-surfaced roll wheel 4, and the both ends of the bull stick 7 and riser 2 are rotatablely connected, the middle part setting of the bull stick 7
Bristle brush wheel 8, the bristle brush wheel 8 can be contacted with the rough layer 5 on 4 surface of rubber roll, the both ends of bull stick 7 and pair of driving wheel 6
It answers position that driven wheel 9 is set, is connected between the driving wheel 6 and driven wheel 9 by belt 10,1 bottom of blackboard eraser main body
Collecting chamber 11 is arranged in the side of portion's bristle brush wheel 8, and the collecting chamber 11 is connected to same root collecting pipe 12, the collecting pipe 12
It is closed at one end, the other end of the collecting pipe 12 is connected to the air inlet of exhaust fan 13, the outlet air of the exhaust fan 13
Mouthful be connected to collection box 15, the collection box 15 is fixedly connected with blackboard eraser main body 1, a side bottom of the collection box 15 and
One end connection of pipe 16 is cleared up, the other end of the cleaning pipe 16 is threadedly coupled with pipe lid 17, sets in the blackboard eraser main body 1
Battery case 18 is set, the battery case 18 and exhaust fan 13 are electrically connected, and the top setting exhaust fan of the collection box 15 is opened
Button 19 is closed, the exhaust fan switch button 19 and exhaust fan 13 are electrically connected.The present invention is opened by exhaust fan when in use
It closes button 19 and opens exhaust fan 13, then wiping chalk-writing or so dynamic makes to contact at rough layer 5 and chalk-writing and by chalk
Under ash is wiped, chalk dust is eventually entered into collection box 15 under the drive of exhaust fan 13 by collecting chamber 11 and collecting pipe 12, and fixed
Phase clears up the chalk dust in collection box 15 by clearing up pipe 16, and passes through driving wheel 6, driven wheel 9 and belt 10
The pulley apparatus of composition drives the rotation of bull stick 7 to drive bristle brush wheel 8 to clear up the chalk dust adhered on rough layer 5,
It is easy to operate, it is easy to use.
Specifically, due to only leaning on bristle brush wheel 8 that cannot carry out thoroughly effective cleaning to rough layer 5, and chalk powder remains
It will affect the efficiency to erase the board on rough layer 5, in order to overcome the above problem, setting in blackboard eraser main body 1 described in the present embodiment
Water storage cavity 20, is arranged baffle 21 in the middle part of the water storage cavity 20,21 bottom opening of the baffle setting, and the baffle 21 is left
Side cavity top end is connected to one end of water inlet pipe 22, the other end of the water inlet pipe 22 be located at 1 top of blackboard eraser main body and with pipe
Cap 23 is threadedly coupled, and the 21 left side cavity top of baffle is connected to one end of outlet pipe 24, sets on the outlet pipe 24
Pressure valve 25 is set, the other end of the outlet pipe 24 is connected to transverse tube 26, the top of the transverse tube 26 and several inclined tubes 27
Connection, the number of the inclined tube 27 is identical as 4 number of rubber roll, and the inclined tube 27 is positioned at accordingly rubber roll 4
Side, the cavity on 21 right side of baffle is interior to be arranged pressing plate 28, and screw rod 29, the screw rod is arranged above the pressing plate 28
The top center position of 29 bottom and pressing plate 28 is rotatablely connected, and the blackboard eraser main body 1 is opened with the corresponding position of screw rod 29
If screw hole 30, the screw rod 29 is threadedly coupled with screw hole 30, and soft set 31 is arranged in the top of the screw rod 29.The present invention makes
Used time is moved downward with dynamic pressure plate to enter hydraulic pressure in 21 left side cavity body of baffle, when 21 left side cavity of baffle by rotation screw rod 29
In vivo by water filling it is full after continued to rotate the pressurization of screw rod 29 to make pressure valve 25 open, water by outlet pipe 24, transverse tube 26 with
And inclined tube 27 flows on rough layer 5, while whole be moved forward and backward being driven to make the rough layer after being readily wetted by water 5 and bristle brush wheel 8, thus
The purpose of thorough cleaning rough layer 5 is played, rotation screw rod 29 is moved upwards with dynamic pressure plate 28 after the completion of cleaning, and pressure reduces, pressure
Power valve 25 is closed, to terminate to rinse；Soft set 31 avoids manpower from directly contacting with screw rod 29 so as to cause manpower scuffing simultaneously, leads to
It crosses water inlet pipe 22 and supplements water into water storage cavity 20, it is ensured that normal use.
Specifically, handle 32 is arranged in the top of blackboard eraser main body 1 described in the present embodiment.Can preferably it be made by handle 32
With the present invention, it is easy to use.
Further, it is splashed in air due to might have part chalk powder during erasing the board, is inhaled by human body
It will affect human health after entering, in order to overcome the above problem, the bottom periphery setting of blackboard eraser main body 1 described in the present embodiment is dust-proof
Cover 33.Dust cover 33 effectively can prevent chalk powder to be splashed in air, it is ensured that most chalk powders are sucked away, thus really
Protect human health.
Further, chalk slot 34, the chalk slot is arranged in the side of blackboard eraser main body 1 described in the present embodiment
Elastic rubber ring 14 is set in 34.Chalk can be inserted in ledge for chalk on blackboard 34, while can be avoided chalk by elastic rubber ring 14
It is fallen out of ledge for chalk on blackboard 34, chalk taking is directly gone out into use after wiping blackboard, it is easy to operate, it is easy to use.
Finally, it should be noted that in description of the invention, it is to be understood that term " top ", " bottom ", " one end ",
" other end ", " top ", " bottom end ", "upper", "lower", "left", "right", " side ", "inner", " middle part ", " center ", " both ends " etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.In the present invention unless specifically defined or limited otherwise, term " peace
The terms such as dress ", " setting ", " connection ", " fixation ", " rotation connection " shall be understood in a broad sense, for example, can be fixedly connected,
Can be detachably connected, or it is integral；It can be mechanical connection, also can be electrical connection；Can be connected directly, also can
It indirectly connected through an intermediary, can be the interaction relationship of connection or two elements inside two elements, unless separately
There is specific restriction, for the ordinary skill in the art, can understand above-mentioned term in this hair as the case may be
Concrete meaning in bright.The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to aforementioned
Invention is explained in detail for embodiment, those skilled in the art should understand that: it still can be to aforementioned
Technical solution documented by each embodiment is modified or equivalent replacement of some of the technical features；And these are repaired
Change or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. dust absorption blackboard eraser, including blackboard eraser main body (1), it is characterised in that: the two sides of the bottom setting of the blackboard eraser main body (1) is each
It is arranged several risers (2), shaft (3) is set between two corresponding risers (2), the shaft (3) passes through rubber roll (4)
Middle part and be fixedly connected with rubber roll (4), rough layer (5) are arranged in the periphery of the rubber roll (4), the shaft
(3) driving wheel (6) are arranged in both ends, and bull stick (7) are arranged in the top of the rubber roll (4), the both ends of the bull stick (7)
It is rotatablely connected with riser (2), bristle brush wheel (8) are arranged in the middle part of the bull stick (7), and the bristle brush wheel (8) can be rolled with rubber
Rough layer (5) contact on (4) surface is taken turns, driven wheel (9) are arranged in the both ends of bull stick (7) and the corresponding position of driving wheel (6), described
Driving wheel (6) and driven wheel (9) between connect by belt (10), the one of blackboard eraser main body (1) the bottom bristle brush wheel (8)
Collecting chamber (11) are arranged in side, and the collecting chamber (11) is connected to same root collecting pipe (12), and the one of the collecting pipe (12)
End seal is closed, and the other end of the collecting pipe (12) is connected to the air inlet of exhaust fan (13), and the exhaust fan (13) goes out
Air port is connected to collection box (15), and the collection box (15) is fixedly connected with blackboard eraser main body (1), the collection box (15)
One side bottom is connected to one end of cleaning pipe (16), and the other end of the cleaning pipe (16) is threadedly coupled with Guan Gai (17), institute
Battery case (18) are set in the blackboard eraser main body (1) stated, the battery case (18) and exhaust fan (13) are electrically connected, the receipts
Exhaust fan switch button (19) are arranged in the top for collecting box (15), and the exhaust fan switch button (19) and exhaust fan (13) are electrically
Connection.
2. dust absorption blackboard eraser according to claim 1, it is characterised in that: water storage cavity is arranged in the blackboard eraser main body (1)
(20), baffle (21) are set in the middle part of the water storage cavity (20), the setting of the baffle (21) bottom opening, the baffle
(21) left side cavity top end is connected to one end of water inlet pipe (22), and the other end of the water inlet pipe (22) is located at blackboard eraser main body
(1) it top and being threadedly coupled with pipe cap (23), cavity top is connected to one end of outlet pipe (24) on the left of the baffle (21),
Pressure valve (25) are set on the outlet pipe (24), the other end of the outlet pipe (24) is connected to transverse tube (26), described
Transverse tube (26) be connected to the top of several inclined tubes (27), the number of the inclined tube (27) is identical as rubber roll (4) number,
The inclined tube (27) is located at the side of accordingly rubber roll (4), and pressing plate is arranged in the cavity on the right side of the baffle (21)
(28), screw rod (29) are set above the pressing plate (28), the bottom of the screw rod (29) and the center of top of pressing plate (28)
Position rotation connection, the blackboard eraser main body (1) open up screw hole (30), the screw rod with the corresponding position of screw rod (29)
(29) it is threadedly coupled with screw hole (30), soft set (31) is arranged in the top of the screw rod (29).
3. dust absorption blackboard eraser according to claim 1, it is characterised in that: handle is arranged in the top of the blackboard eraser main body (1)
Hand (32).
4. dust absorption blackboard eraser according to claim 1, it is characterised in that: the bottom periphery of the blackboard eraser main body (1) is set
Set dust cover (33).
5. dust absorption blackboard eraser according to claim 1, it is characterised in that: powder is arranged in the side of the blackboard eraser main body (1)
Penholder slot (34), the chalk slot (34) is interior to be arranged elastic rubber ring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076625.0A CN109094262A (en) | 2018-09-14 | 2018-09-14 | Dust absorption blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076625.0A CN109094262A (en) | 2018-09-14 | 2018-09-14 | Dust absorption blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109094262A true CN109094262A (en) | 2018-12-28 |
Family
ID=64866531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811076625.0A Pending CN109094262A (en) | 2018-09-14 | 2018-09-14 | Dust absorption blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109094262A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239267A (en) * | 2019-07-03 | 2019-09-17 | 湖北工程职业学院 | A kind of blackboard eraser adsorbing chalk dust |
| CN113539128A (en) * | 2021-07-13 | 2021-10-22 | 深圳市沃威科技有限公司 | Open-air electronic display screen with safeguard function |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3418673A (en) * | 1966-02-09 | 1968-12-31 | Andre E. Kruth | Chalk board eraser |
| JPS483346U (en) * | 1971-05-22 | 1973-01-16 | ||
| GB2132946A (en) * | 1982-12-20 | 1984-07-18 | Wen Chin Lee | Automatic blackboard duster |
| JPH0445097U (en) * | 1990-08-16 | 1992-04-16 | ||
| JPH0580792U (en) * | 1992-03-31 | 1993-11-02 | 正美 本間 | Black-and-white board wiping of rotary circulation dust collecting mechanism |
| JPH08267995A (en) * | 1995-03-30 | 1996-10-15 | Shinji Inoue | Blackboard eraser equipped with vacuum cleaner |
| CN2883027Y (en) * | 2006-01-05 | 2007-03-28 | 杜云婷 | Eraser |
| KR20110015873A (en) * | 2009-08-10 | 2011-02-17 | 임만식 | Cleaning material built-in type cleaning brush |
| CN202847274U (en) * | 2012-06-06 | 2013-04-03 | 陈坤 | Novel pen container blackboard eraser |
| CN205326621U (en) * | 2016-01-12 | 2016-06-22 | 百色学院 | Environment protection dust absorption eraser |
| CN105966127A (en) * | 2016-05-26 | 2016-09-28 | 刘乐凝 | Dustproof blackboard eraser |
| CN106004186A (en) * | 2016-06-30 | 2016-10-12 | 郑州科技学院 | Dustless blackboard eraser |
| CN206968254U (en) * | 2017-03-02 | 2018-02-06 | 丁壮 | A kind of dust-proof blackboard eraser |
| CN107776298A (en) * | 2016-08-25 | 2018-03-09 | 刘倩 | A kind of eraser with means for absorbing chalk dust |
| CN207388706U (en) * | 2017-04-25 | 2018-05-22 | 崔继胜 | A kind of novel blackboard eraser |
-
2018
- 2018-09-14 CN CN201811076625.0A patent/CN109094262A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3418673A (en) * | 1966-02-09 | 1968-12-31 | Andre E. Kruth | Chalk board eraser |
| JPS483346U (en) * | 1971-05-22 | 1973-01-16 | ||
| GB2132946A (en) * | 1982-12-20 | 1984-07-18 | Wen Chin Lee | Automatic blackboard duster |
| JPH0445097U (en) * | 1990-08-16 | 1992-04-16 | ||
| JPH0580792U (en) * | 1992-03-31 | 1993-11-02 | 正美 本間 | Black-and-white board wiping of rotary circulation dust collecting mechanism |
| JPH08267995A (en) * | 1995-03-30 | 1996-10-15 | Shinji Inoue | Blackboard eraser equipped with vacuum cleaner |
| CN2883027Y (en) * | 2006-01-05 | 2007-03-28 | 杜云婷 | Eraser |
| KR20110015873A (en) * | 2009-08-10 | 2011-02-17 | 임만식 | Cleaning material built-in type cleaning brush |
| CN202847274U (en) * | 2012-06-06 | 2013-04-03 | 陈坤 | Novel pen container blackboard eraser |
| CN205326621U (en) * | 2016-01-12 | 2016-06-22 | 百色学院 | Environment protection dust absorption eraser |
| CN105966127A (en) * | 2016-05-26 | 2016-09-28 | 刘乐凝 | Dustproof blackboard eraser |
| CN106004186A (en) * | 2016-06-30 | 2016-10-12 | 郑州科技学院 | Dustless blackboard eraser |
| CN107776298A (en) * | 2016-08-25 | 2018-03-09 | 刘倩 | A kind of eraser with means for absorbing chalk dust |
| CN206968254U (en) * | 2017-03-02 | 2018-02-06 | 丁壮 | A kind of dust-proof blackboard eraser |
| CN207388706U (en) * | 2017-04-25 | 2018-05-22 | 崔继胜 | A kind of novel blackboard eraser |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239267A (en) * | 2019-07-03 | 2019-09-17 | 湖北工程职业学院 | A kind of blackboard eraser adsorbing chalk dust |
| CN113539128A (en) * | 2021-07-13 | 2021-10-22 | 深圳市沃威科技有限公司 | Open-air electronic display screen with safeguard function |
| CN113539128B (en) * | 2021-07-13 | 2022-11-18 | 深圳市沃威科技有限公司 | Open-air electronic display screen with safeguard function |
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Application publication date: 20181228 |
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| RJ01 | Rejection of invention patent application after publication |