CN203600854U - Environment-friendly blackboard eraser - Google Patents
Environment-friendly blackboard eraser Download PDFInfo
- Publication number
- CN203600854U CN203600854U CN201320669204.5U CN201320669204U CN203600854U CN 203600854 U CN203600854 U CN 203600854U CN 201320669204 U CN201320669204 U CN 201320669204U CN 203600854 U CN203600854 U CN 203600854U
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- blackboard eraser
- conductive layer
- roller
- environment
- idler wheel
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Abstract
The utility model provides an environment-friendly blackboard eraser, and relates to the technical field of blackboard cleaning devices. The environment-friendly blackboard eraser comprises a rectangular shell and an idler wheel connected with the shell. A conductive layer is arranged on the outer surface of the idler wheel, a wiping layer covers the conductive layer, and the idler wheel is further provided with an electrostatic generator which is electrically connected with the conductive layer. One end of the idler wheel is connected with a rotating handle, and the other end of the idler wheel is connected with a switch which can control stopping and rotating of the idler wheel and connecting and disconnecting of the conductive layer simultaneously, and a dust storage groove is formed above the idler wheel. The environment-friendly blackboard eraser solves the technical problems that in the prior art, static electricity is used for absorbing chalk ash, so that a blackboard is not wiped cleanly, and the chalk ash can float to the air again. The environment-friendly blackboard eraser has the advantages that chalk track wiping and chalk ash absorption can be synchronous, the blackboard is cleanly wiped, the chalk ash generated during blackboard wiping is greatly absorbed, the chalk ash is absorbed and stored, and a class environment free of chalk ash is built. The environment-friendly blackboard eraser is free of noise, small in size and convenient to carry. The voltage of the static electricity can be controlled easily, operation is convenient, and the electricity is saved.
Description
Technical field
The utility model relates to blackboard cleaning device technical field, especially relates to a kind of structure of blackboard eraser.
Background technology
In modern education, teaching equipment has had snafu variation, and a series of modernizing teaching equipment has progressively substituted traditional teaching equipment.But writing on the blackboard, as the good assistant of teaching, also adopts on classroom.In particularly middle and primary schools' stage, on classroom, the use probability of chalk is larger.Writing on the blackboard has also brought healthy hidden danger to academics and students in having facilitated teaching.In the time erasing the board, chalk dust flies upward all over the sky, breathes or holds one's breath even if teachers and students slow down, and also inevitably still can suck some chalk dusts.Teacher, because its job specification determines, must live under this environment for a long time, and this is just easy to suffer from breathing problem.Chinese patent publication No. CN102431364A, on May 2 2012 Shen Qing Publication day, name is called the patent of invention of " dust-free black board eraser ", and disclose one and utilized electrostatic absorption principle restriction chalk dust to fly upward everywhere, and by the unified chalk dust dust-free black board eraser of collecting.It comprises blackboard eraser body, in blackboard eraser body, be provided with dust-collecting cavity, dust-collecting cavity top is provided with metal electro static filtering net, being arranged on renovating with dust-collecting cavity of blackboard eraser body rear end communicates, be fixedly installed focussing glass on the net at metal electro static filtering, in blackboard eraser body, also rotational support has roller, and the outer surface of roller is provided with silk layer, and roller roll time can with the mutual friction of focussing glass phase, in blackboard eraser body, be also provided with rub piece.This structure rub piece wiping chalk track, chalk dust flies upward, and roller rotates, and the silk layer of roller outer surface and the mutual friction of focussing glass phase produce Electrostatic Absorption chalk dust, and roller is rotated further, and is processed just chalk ash collection is arrived to dust-collecting cavity by metal electro static filtering net.This structure roller rotates in the time erasing the board, and is unfavorable for chalk track wiped clean, and the chalk dust being adsorbed by roller has little time to be filtered net and processes, and can again float in air.In addition, the static of this structure is produced by silk layer and the mutual friction of focussing glass phase, and absorption chalk dust and electrostatic potential that need to be different to dust-collecting cavity by chalk ash collection, be not easy to control.
Summary of the invention
In prior art, utilize the blackboard eraser wiping chalk track of Electrostatic Absorption chalk dust unclean in order to solve, chalk ash collection can float to airborne technical problem not in time again, the utility model provides a kind of blackboard eraser for environmental protection, reaches wiping chalk track totally and will adsorb the object of chalk ash collection.
The technical solution of the utility model is: a kind of blackboard eraser for environmental protection, it comprises rectangular housing and the roller being connected with housing, roller outer surface is provided with conductive layer, the coated cleaning layer in conductive layer outside, roller is also provided with the electrostatic generator being electrically connected with conductive layer, roller one end is connected with turning handle, and the roller other end is connected with can be controlled roller simultaneously and stop, turn and the switch of electrostatic generator and conductive layer switching, above roller, is provided with and deposits dirt ditch.Pin switch, electrostatic generator and conductive layer are connected, and roller can not rotate, and cleaning layer wiping chalk track also adsorbs chalk dust, and the chalk dust that wiping is got off can not float in air; Not wiping of blackboard eraser switch is decontroled, and now electrostatic generator and conductive layer disconnect, switch fixed handle, and chalk ash collection, depositing in dirt ditch, is built the classroom environment without chalk dust, makes teachers and students in a relative clean environment, work, to learn.
As preferably, roller two ends are connected with respectively the axle head fixture that is T shape, and axle head fixture lug boss and housing are rotatably connected, and the outer face of axle head fixture is provided with groove.
As preferably, switch comprises button, the fixed contact being electrically connected with electrostatic generator and the movable contact being electrically connected with conductive layer, fixed contact and movable contact match, button is two concentric cylindrical structures, between inner circle barrel and outer cylindrical wall, be provided with returning spring, outer cylindrical wall is corresponding with movable contact position.Two functions of a winding machine, compact conformation is reasonable, low cost of manufacture.
As preferably, button inner circle barrel is corresponding with groove location.
As preferably, deposit dirt ditch and be the strip that cross section is V-type, deposit one side of dirt ditch near cleaning layer, the end on this limit is connected with wiper bar, and wiper bar is provided with protruding scraping teeth, and scraping teeth contacts with cleaning layer; The convenient chalk dust by cleaning layer absorption is cleaned out from cleaning layer.
As preferably, described in deposit dirt ditch top and be provided with enclosing cover, enclosing cover and housing removably connect; Easy cleaning is accommodated in the chalk dust of depositing in dirt ditch.
Compared with prior art, the beneficial effects of the utility model are: wiping chalk track is synchronizeed with absorption chalk dust, and blackboard-cleaning is clean, absorbs to greatest extent the chalk dust while erasing the board, and is sucked, receives, and builds the classroom environment without chalk dust.Noiselessness, environmental protection, practicality, volume is little is easy to carry.Electrostatic potential is easily controlled, easy to operate power saving again.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is the profile of Fig. 1 A-A;
Schematic diagram when accompanying drawing 3 is switch relieving of the present utility model.
In figure: 1-enclosing cover; 2-housing; 3-axle head fixture; 4-turning handle; 5-roller; 6-switch; 7-wiper bar; 8-deposits dirt ditch; 9-electrostatic generator; 51-cleaning layer; 52-conductive layer; 53-elastomer; Axle in 54-; 61-button; 62-returning spring; 63-fixed contact; 64-movable contact.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, 2, a kind of blackboard eraser for environmental protection, it comprises rectangular housing 2 and the roller 5 being connected with housing 2.Roller 5 outer surfaces are provided with conductive layer 52, and conductive layer 52 outsides are coated cleaning layer 51, and roller 5 is also provided with the electrostatic generator 9 being electrically connected with conductive layer 52.Roller 5 is made up of interior axle 54, elastomer 53, conductive layer 52 and cleaning layer 51.Interior axle 54 is cylinder, and center is provided with square hollow cavity, and square hollow cavity runs through interior axle 54, and electrostatic generator 9 is located in the square hollow cavity of interior axle 54.Elastomer 53 is the flexible structure of insulation, and elastomer 53 is coated on interior axle 54 outer surfaces.Conductive layer 52 is copper mesh, is close to elastomer 53 outer surfaces coated.Cleaning layer 51 is dust removing cloth.Roller 5 two ends are connected with respectively the axle head fixture 3 that is T shape, and axle head fixture 3 lug bosses and housing 2 are rotatably connected.Axle head fixture 3 lug bosses are cylinder, and axle head fixture 3 lug bosses and bearing inner race are fastening, bearing outer ring and housing 2 interference fit.The square hollow cavity end of axle 54 in one end that axle head fixture 3 is flat embeds.The outer face of axle head fixture 3 is provided with groove 31.Groove 31 is the circle concentric with axle head fixture 3 lug bosses.Roller 5 one end are connected with turning handle 4.Turning handle 4 is discoid, and centre is provided with blind hole.Turning handle 4 blind holes are inserted in axle head fixture 3 lug boss ends, are fixed by screw.Roller 5 other ends are connected with can be controlled roller 5 simultaneously and stop, turn and the switch 6 of electrostatic generator 9 and conductive layer 52 switchings.Switch 6 comprises button 61, the fixed contact 63 being electrically connected with electrostatic generator 9 and the movable contact 64 being electrically connected with conductive layer 52, and fixed contact 63 and movable contact 64 match.Fixed contact 63 is that metallic conductor and housing 2 are fixing.Fixed contact 63 is connected with battery (not shown) by wire, and battery is connected with electrostatic generator 9 by wire.Movable contact 64 is metallic spring, and one end and housing 2 are fixing, and the other end is unsettled.Movable contact 64 stiff ends are connected with conductive layer 52 by wire.When being failure to actuate, separates with fixed contact 63 movable contact 64, when movable contact 64 moves, and free end and fixed contact 63 crimping.Button 61 is two concentric cylindrical structures, between button 61 inner circle barrels and outer cylindrical wall, is provided with returning spring 62, and returning spring 62 is socketed in inner circle barrel outer surface, and returning spring 62 one end are withstood housing 2 other ends and withstood the inside and outside cylinder of button 61 portion that is connected.Button 61 outer cylindrical wall are corresponding with movable contact 64 positions, and movable contact 64 free ends can be pushed down in the end of outer cylindrical wall.Button 61 inner circle barrels are corresponding with groove 31 positions, and inner circle barrel end can embed groove 31.Roller 5 tops are provided with deposits dirt ditch 8, deposits dirt ditch 8 and is the strip that cross section is V-type, deposits one side of dirt ditch 8 near cleaning layer 51, and the end on this limit is connected with wiper bar 7.Another side and the housing 2 of depositing dirt ditch 8 are fixing.Wiper bar 7 is provided with protruding scraping teeth, and scraping teeth contacts with cleaning layer 51, and the scraping teeth of wiper bar 7 projections is close to cleaning layer 51.Deposit dirt ditch 8 tops and be provided with enclosing cover 1, enclosing cover 1 removably connects with housing 2.Enclosing cover 1 inner side, both sides is provided with covers groove, and the corresponding both sides of housing 2 are provided with shell slot near end, and shell slot inserts and covers groove.
In the time using blackboard eraser, pin switch 6 with a finger, movable contact 64 free ends are pressed onto fixed contact 63 by button 61 outer cylindrical wall, and electrostatic generator 9 is connected with conductive layer 52, produces static.Meanwhile, button 61 inner circle barrel ends embed groove 31, withstand roller and can not rotate.Now cleaning layer 51 wiping chalk tracks adsorb chalk dust.
As shown in Figure 3, blackboard wipes, and finger is decontroled switch 6, and because returning spring 62 acts on, button 61 outer cylindrical wall and movable contact 64 free ends are thrown off, and movable contact 64 disconnects with fixed contact 63, and electrostatic generator 9 is disconnected with conductive layer 52, without generation of static electricity.Meanwhile, button 61 inner circle barrel ends and groove 31 are thrown off, switch fixed handle 4, and roller 5 rotates, and the chalk dust that wiper bar 7 adsorbs cleaning layer 51 scrapes, and the chalk dust scraping falls into be deposited in dirt ditch 8.Depositing after 8 a period of times of dirt ditch when chalk ash collection, enclosing cover 1 is pulled down, pouring chalk dust into dustbin, dirt ditch 8 is deposited in cleaning and wiper bar 7 covers back enclosing cover 1 again.
Claims (6)
1. a blackboard eraser for environmental protection, it comprises rectangular housing (2) and the roller (5) being connected with housing (2), it is characterized in that: described roller (5) outer surface is provided with conductive layer (52), the coated cleaning layer (51) in conductive layer (52) outside, described roller (5) is also provided with the electrostatic generator (9) being electrically connected with described conductive layer (52), described roller (5) one end is connected with turning handle (4), roller (5) other end is connected with simultaneously can be controlled described roller (5) and stop, turn logical with described electrostatic generator (9) and described conductive layer (52), disconnected switch (6), described roller (5) top is provided with deposits dirt ditch (8).
2. a kind of blackboard eraser for environmental protection according to claim 1, it is characterized in that: described roller (5) two ends are connected with respectively the axle head fixture (3) that is T shape, axle head fixture (3) lug boss and housing (2) are rotatably connected, and the outer face of axle head fixture (3) is provided with groove (31).
3. a kind of blackboard eraser for environmental protection according to claim 1, it is characterized in that: described switch (6) comprises button (61), the fixed contact (63) being electrically connected with described electrostatic generator (9) and the movable contact (64) being electrically connected with described conductive layer (52), fixed contact (63) and movable contact (64) match, described button (61) is two concentric cylindrical structures, between inner circle barrel and outer cylindrical wall, be provided with returning spring (62), outer cylindrical wall is corresponding with movable contact (64) position.
4. according to a kind of blackboard eraser for environmental protection described in claim 2 or 3, it is characterized in that: button (61) inner circle barrel is corresponding with groove (31) position.
5. a kind of blackboard eraser for environmental protection according to claim 1, it is characterized in that: described in deposit dirt ditch (8) and be the strip that cross section is V-type, deposit one side of dirt ditch (8) near cleaning layer (51), the end on this limit is connected with wiper bar (7), described wiper bar (7) is provided with protruding scraping teeth, and scraping teeth contacts with cleaning layer (51).
6. a kind of blackboard eraser for environmental protection according to claim 1 or 5, is characterized in that: described in deposit dirt ditch (8) top and be provided with enclosing cover (1), enclosing cover (1) removably connects with housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669204.5U CN203600854U (en) | 2013-10-29 | 2013-10-29 | Environment-friendly blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320669204.5U CN203600854U (en) | 2013-10-29 | 2013-10-29 | Environment-friendly blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203600854U true CN203600854U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320669204.5U Expired - Fee Related CN203600854U (en) | 2013-10-29 | 2013-10-29 | Environment-friendly blackboard eraser |
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| Country | Link |
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| CN (1) | CN203600854U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004185A (en) * | 2016-06-29 | 2016-10-12 | 裴萌 | Blackboard eraser preventing chalk dust from flying |
| CN106427322A (en) * | 2016-09-12 | 2017-02-22 | 芜湖能盟信息技术有限公司 | Dust-collecting blackboard eraser |
| CN109760452A (en) * | 2019-03-06 | 2019-05-17 | 凡得雨 | A kind of black board eraser with chalk-dust collector |
| CN112123979A (en) * | 2020-09-28 | 2020-12-25 | 杭州师范大学钱江学院 | Air bag type dust removal blackboard eraser and using method thereof |
| CN112223941A (en) * | 2020-10-15 | 2021-01-15 | 杭州师范大学钱江学院 | Dust cleaning and absorbing type blackboard eraser and using method thereof |
-
2013
- 2013-10-29 CN CN201320669204.5U patent/CN203600854U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004185A (en) * | 2016-06-29 | 2016-10-12 | 裴萌 | Blackboard eraser preventing chalk dust from flying |
| CN106004185B (en) * | 2016-06-29 | 2018-02-27 | 裴萌 | A kind of blackboard eraser for preventing that chalk dust from flying upward |
| CN106427322A (en) * | 2016-09-12 | 2017-02-22 | 芜湖能盟信息技术有限公司 | Dust-collecting blackboard eraser |
| CN109760452A (en) * | 2019-03-06 | 2019-05-17 | 凡得雨 | A kind of black board eraser with chalk-dust collector |
| CN112123979A (en) * | 2020-09-28 | 2020-12-25 | 杭州师范大学钱江学院 | Air bag type dust removal blackboard eraser and using method thereof |
| CN112123979B (en) * | 2020-09-28 | 2021-10-22 | 杭州师范大学钱江学院 | Air bag type dust removal blackboard eraser and using method thereof |
| CN112223941A (en) * | 2020-10-15 | 2021-01-15 | 杭州师范大学钱江学院 | Dust cleaning and absorbing type blackboard eraser and using method thereof |
| CN112223941B (en) * | 2020-10-15 | 2021-12-07 | 杭州师范大学钱江学院 | Dust cleaning and absorbing type blackboard eraser and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20141029 |
|
| EXPY | Termination of patent right or utility model |