CN112590433A - Dust-proof blackboard eraser for intelligent classroom and control system thereof - Google Patents
Dust-proof blackboard eraser for intelligent classroom and control system thereof Download PDFInfo
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- CN112590433A CN112590433A CN202011456712.6A CN202011456712A CN112590433A CN 112590433 A CN112590433 A CN 112590433A CN 202011456712 A CN202011456712 A CN 202011456712A CN 112590433 A CN112590433 A CN 112590433A
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- 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
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Abstract
The invention discloses a dust-proof blackboard eraser for an intelligent classroom and a control system thereof, and relates to the technical field of dust-proof blackboard erasers. The invention comprises an outer box body, an inner box body, a rectangular ring plate, a wiping plate, a support frame and a linkage device; the linkage device comprises a plurality of springs and two rotating structures; the inner side surface of the rectangular ring plate is provided with conductive cloth; the top end of the rectangular annular plate is provided with a rectangular annular sponge wiper; the wiping plate is positioned at the inner side of the sponge wiper; the conductive cloth is electrically connected with the electrostatic generator. When the first pressure sensor detects and transmits a pressure signal to the main controller, the main controller controls the positive and negative rotation servo motor to rotate reversely so that the horizontal scraper slides to the inner side of the dust collection loop; then moving the outer box body to erase chalk traces, and adsorbing the erased dust by the conductive cloth; the dust absorption device has the advantages that dust is effectively absorbed, dust diffusion is prevented from harming the health of teachers and students when chalk marks are erased, and the dust absorption device is convenient and practical.
Description
Technical Field
The invention belongs to the technical field of dust-proof blackboard erasers, and particularly relates to a dust-proof blackboard eraser for an intelligent classroom and a control system of the dust-proof blackboard eraser.
Background
Various smart devices are popular in smart classrooms, such as: intelligent electronic blackboards, projectors, multimedia consoles, and the like. Although the current intelligent teaching equipment can greatly improve the teaching efficiency and quality; however, the conventional chalk is inevitably used for writing and displaying. After the chalk is written, a blackboard eraser is needed to be used for wiping; however, a large amount of chalk powder is generated in the wiping process, so that teachers and students adsorb a large amount of chalk powder dust in the teaching process, and the respiratory systems of the teachers and students are seriously affected.
In order to solve the problems, the invention provides a dust-proof blackboard eraser for an intelligent classroom and a control system thereof.
Disclosure of Invention
The invention aims to provide a dust-proof blackboard eraser for a smart classroom and a control system thereof, which are used for solving the technical problems in the background technology.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a dust-proof blackboard eraser for an intelligent classroom, which comprises: the outer box body, the inner box body, the rectangular ring plate, the wiping plate, the support frame and the linkage device; the outer box body and the inner box body are rectangular box bodies with one ends opened; the inner bottom surface of the outer box body is connected with the outer bottom surface of the inner box body through a plurality of connecting columns distributed in a matrix manner; the rectangular ring plate is slidably arranged between the outer box body and the inner box body, and a dust collection loop is formed between the rectangular ring plate and the inner box body; a rectangular limiting ring is arranged at the opening end of the inner box body;
the support frame comprises a support plate and a support ring plate; the supporting plate and the supporting ring plate are rectangular; the supporting plate is arranged on the inner peripheral side of the inner box body in a sliding mode; the supporting ring plate is slidably arranged in the rectangular limiting ring; the wiping plate is arranged on the upper end face of the support ring plate;
the linkage device comprises a plurality of springs and two rotating structures; the supporting plate is fixedly connected with the inner bottom surface of the inner box body through a plurality of springs distributed in a matrix manner; the two rotating structures are symmetrically arranged on the edges of two sides of the inner bottom surface of the inner box body; the rotating structure comprises a support column and a rotating rod; the opposite side surfaces of the inner box body are provided with vertical strip-shaped holes; a rectangular sliding hole is formed in the side face of the rotating rod; a cross shaft is arranged between two side walls of an installation groove formed in the top end of the support column; the transverse shaft is slidably arranged in the rectangular sliding hole; one end of the rotating rod penetrates through the vertical strip-shaped hole to be hinged with the side face of the rectangular annular plate, and the other end of the rotating rod is slidably arranged on the bottom face of the supporting plate;
the inner side surface of the rectangular annular plate is provided with conductive cloth; the top end of the rectangular annular plate is provided with a rectangular annular sponge wiper; the wiping plate is positioned at the inner side of the sponge wiper; the conductive cloth is electrically connected with the electrostatic generator.
As a preferred technical scheme, a horizontal slideway is arranged on the bottom surface of the supporting plate; limiting sliding chutes are symmetrically formed between the two side walls of the horizontal sliding way; one end of the rotating rod is provided with a sliding shaft; and two ends of the sliding shaft are correspondingly and slidably arranged in the limiting sliding grooves.
As a preferred technical scheme, the lateral surfaces of the supporting ring plates are provided with strip-shaped horizontal sliding holes; and a horizontal scraper is arranged in the strip-shaped horizontal sliding hole in a sliding manner.
As a preferred technical scheme, a positive and negative rotation servo motor is arranged in the center of the outer surface of the supporting plate; the output end of the positive and negative rotation servo motor is coaxially provided with a rotating disc; the horizontal scraper is movably connected with the periphery of the rotating disc through a connecting rod; and two ends of the connecting rod are respectively hinged with the side end of the horizontal scraper and the side surface of the rotating disc.
As a preferred technical scheme, a controller and an upright rod are arranged on the inner bottom surface of the inner box body; and a first pressure sensor is arranged at the top end of the vertical rod.
As a preferred technical solution, the vertical rod is higher than the support column; when the supporting plate is pressed to the first pressure sensor, the outer surface of the wiping plate and the outer surface of the sponge wiping plate are coplanar.
As a preferable technical scheme, a second pressure sensor is arranged at the center of the outer surface of the wiping plate; the controller is respectively connected with the first pressure sensor, the second pressure sensor and the positive and negative rotation servo motor through electric signals.
As a preferable technical proposal, a switch button is arranged on the outer side surface of the outer box body; the switch button is in electric signal connection with the controller; and after the controller receives a switching signal transmitted by the switch button, the controller controls the conductive cloth to be communicated with the electrostatic generator.
Control system of dust-proof blackboard eraser that wisdom classroom was used includes: the servo motor comprises a main controller, a first pressure sensor, a second pressure sensor and a positive and negative rotation servo motor; the main controller is respectively connected with the first pressure sensor, the second pressure sensor and the positive and negative rotation servo motor through electric signals;
when the second pressure sensor detects and transmits a pressure signal to the main controller, the main controller controls the positive and negative rotation servo motor to rotate in the positive direction so that the horizontal scraper is attached to the inner side face of the rectangular ring plate;
when the first pressure sensor detects and transmits a pressure signal to the main controller, the main controller controls the positive and negative rotation servo motor to rotate in the reverse direction so that the horizontal scraper slides to the inner side of the dust collection loop.
As a preferred technical scheme, the device also comprises a switch button, conductive cloth and an electrostatic generator; the main controller is respectively connected with the switch button, the conductive cloth and the electrostatic generator through electric signals; and when the main controller receives a switching signal transmitted by the switch button, the main controller controls the conductive cloth to be communicated with the electrostatic generator.
One aspect of the present invention has the following advantageous effects:
1. according to the blackboard eraser, the outer box body is pressed to enable the wiping plate to be attached to a blackboard, the main controller controls the positive and negative rotation servo motor to rotate in the positive direction to enable the horizontal scraper to be attached to the inner side face of the rectangular ring plate, the outer box body is continuously pressed until the first pressure sensor detects and transmits a pressure signal to the main controller, and the outer surface of the wiping plate and the outer surface of the sponge eraser are coplanar at the moment, so that dust adsorbed on the inner side face of the horizontal scraper at the last time is scraped, and.
2. When the first pressure sensor detects and transmits a pressure signal to the main controller, the main controller controls the positive and negative rotation servo motor to rotate reversely so that the horizontal scraper slides to the inner side of the dust collection loop; then moving the outer box body to erase chalk traces, and adsorbing the erased dust by the conductive cloth; the dust absorption device has the advantages that dust is effectively absorbed, dust diffusion is prevented from harming the health of teachers and students when chalk marks are erased, and the dust absorption device is convenient and practical.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a dust-proof blackboard eraser for a smart classroom according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view of A in FIG. 3;
FIG. 5 is an enlarged view of B in FIG. 3;
FIG. 6 is a schematic structural view of the dust-proof blackboard eraser for intelligent classroom, without the blackboard eraser, the supporting frame and the linkage;
FIG. 7 is a schematic view of the rotating lever according to the present invention;
FIG. 8 is a schematic view of the structure of the supporting frame and the wiping board of the present invention;
FIG. 9 is a schematic view of the structure of the present invention in which a forward and reverse servo motor and a horizontal scraper are installed on a support;
FIG. 10 is a schematic view of a control system of the dust-proof blackboard eraser for a smart classroom according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-outer box body, 11-connecting column, 12-switch button, 2-inner box body, 21-rectangular limiting ring, 22-vertical strip-shaped hole, 23-controller, 24-vertical rod, 241-first pressure sensor, 3-rectangular ring plate, 31-sponge eraser, 4-wiping plate, 41-second pressure sensor, 51-supporting plate, 511-horizontal slideway, 52-supporting ring plate, 61-spring, 62-supporting column, 621-horizontal shaft, 63-rotating rod, 631-rectangular sliding hole, 632-sliding shaft, 71-strip horizontal sliding hole, 72-horizontal scraper, 73-positive and negative rotation servo motor, 74-rotating disk, 75-connecting rod and a-dust absorption ring channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open," "upper," "middle," "length," "inner," and the like are used in an orientation or positional relationship for convenience in describing the present invention and for simplicity of description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1 to 9, the present invention is a dust-proof blackboard eraser for a smart classroom, including: the device comprises an outer box body 1, an inner box body 2, a rectangular ring plate 3, a wiping plate 4, a support frame and a linkage device; the outer box body 1 and the inner box body 2 are rectangular box bodies with one ends opened; the inner bottom surface of the outer box body 1 is connected with the outer bottom surface of the inner box body 2 through a plurality of connecting columns 11 distributed in a matrix manner; the rectangular ring plate 3 is slidably arranged between the outer box body 1 and the inner box body 2, and a dust collection loop a is formed between the rectangular ring plate 3 and the inner box body 2; a rectangular limiting ring 21 is arranged at the opening end of the inner box body 2;
the support frame comprises a support plate 51 and a support ring plate 52; the supporting plate 51 and the supporting ring plate 52 are both rectangular; the support plate 51 is slidably mounted on the inner peripheral side of the inner case 2; the supporting ring plate 52 is slidably mounted in the rectangular limiting ring 21; the wiping plate 4 is arranged on the upper end surface of the supporting ring plate 52; specifically, the lateral surfaces of the supporting ring plate 52 are provided with strip-shaped horizontal sliding holes 71; a horizontal scraper 72 is arranged in the strip-shaped horizontal sliding hole 71 in a sliding manner; a positive and negative rotation servo motor 73 is arranged at the center of the outer surface of the supporting plate 51; the output end of the positive and negative rotation servo motor 73 is coaxially provided with a rotating disc 74; the horizontal scraper 72 is movably connected with the peripheral side of the rotating disc 74 through a connecting rod 75; two ends of the connecting rod 75 are respectively hinged with the side end of the horizontal scraper 72 and the side surface of the rotating disc 74;
the linkage device comprises a plurality of springs 61 and two rotating structures; the supporting plate 51 is fixedly connected with the inner bottom surface of the inner box body 2 through a plurality of springs 61 distributed in a matrix manner, and the springs 61 enable the supporting plate 51 to be propped against the lower bottom surface of the attached supporting ring plate 52 in a natural state; the two rotating structures are symmetrically arranged on the edges of two sides of the inner bottom surface of the inner box body 2; the rotating structure comprises a support column 62 and a rotating rod 63; the opposite side of the inner box body 2 is provided with a vertical strip-shaped hole 22; the side surface of the rotating rod 63 is provided with a rectangular slide hole 631; a cross shaft 621 is arranged between the two side walls of the installation groove formed at the top end of the support column 62; the cross shaft 621 is slidably mounted in the rectangular slide hole 631; one end of the rotating rod 63 penetrates through the vertical strip-shaped hole 22 to be hinged with the side face of the rectangular annular plate 3, and the other end of the rotating rod 63 is slidably arranged on the bottom face of the supporting plate 51; specifically, a horizontal slide 511 is arranged on the bottom surface of the support plate 51; limiting sliding chutes are symmetrically formed between the two side walls of the horizontal sliding chute 511; one end of the rotating rod 63 is provided with a sliding shaft 632; two ends of the sliding shaft 632 are correspondingly and slidably arranged in the limiting sliding grooves;
the inner side surface of the rectangular annular plate 3 is provided with conductive cloth; the top end of the rectangular annular plate 3 is provided with a rectangular annular sponge wiper 31; the wiping plate 4 is positioned at the inner side of the sponge wiper 31; the conductive cloth is electrically connected with the electrostatic generator; specifically, a switch button 12 is arranged on the outer side surface of the outer box body 1; the switch button 12 is in electrical signal connection with the controller 23; after the controller 23 receives the switching signal transmitted by the switch button 12, the controller 23 controls the conductive cloth to be communicated with the electrostatic generator.
In addition, a controller 23 and a vertical rod 24 are arranged on the inner bottom surface of the inner box body 2; a first pressure sensor 241 is arranged at the top end of the upright rod 24; the upright rod 24 is higher than the support column 62; when the supporting plate 51 is pressed to the first pressure sensor 241, the outer surface of the wiping plate 4 is coplanar with the outer surface of the sponge wiper 31; a second pressure sensor 41 is arranged at the center of the outer surface of the wiping plate 4; the controller 23 is electrically connected to the first pressure sensor 241, the second pressure sensor 41, and the forward/reverse servo motor 73, respectively.
Referring to fig. 10, a control system of a dust-proof blackboard eraser for a smart classroom includes: the main controller 23, the first pressure sensor 241, the second pressure sensor 41 and the positive and negative rotation servo motor 73; the main controller 23 is respectively connected with the first pressure sensor 241, the second pressure sensor 41 and the positive and negative rotation servo motor 73 through electric signals; when the second pressure sensor 41 detects and transmits a pressure signal to the main controller 23, the main controller 23 controls the forward and reverse rotation servo motor 73 to rotate forward so that the horizontal scraping plate 72 is attached to the inner side surface of the rectangular annular plate 3; when the first pressure sensor 241 detects and transmits a pressure signal to the main controller 23, the main controller 23 controls the forward and reverse rotation servo motor 73 to rotate in the reverse direction, so that the horizontal scraper 72 slides to the inner side of the dust collection loop a.
In addition, the device also comprises a switch button 12, conductive cloth and an electrostatic generator; the main controller 23 is respectively connected with the switch button 12, the conductive cloth and the electrostatic generator through electric signals; when the main controller 23 receives the switching signal transmitted by the switch button 12, the main controller 23 controls the conductive cloth to be communicated with the electrostatic generator.
When the blackboard eraser is in practical use, the wiping plate 4 is attached to a blackboard by pressing the outer box body 1, the second pressure sensor 41 detects and transmits a pressure signal to the main controller 23, and the main controller 23 controls the forward and reverse rotation servo motor 73 to rotate forwardly so that the horizontal scraper 72 is attached to the inner side surface of the rectangular ring plate 3, so that dust adsorbed on the inner side surface of the horizontal scraper 72 at the last time is scraped; then, the outer box body 1 is continuously pressed until the first pressure sensor 241 detects and transmits a pressure signal to the main controller 23, and at the moment, the outer surface of the wiping plate 4 and the outer surface of the sponge wiper 31 are coplanar; the main controller 23 controls the positive and negative rotation servo motor 73 to rotate reversely, so that the horizontal scraper 72 slides to the inner side of the dust collection loop a; then moving the outer box body 1 to erase chalk traces, and adsorbing the erased dust by the conductive cloth; when no longer pressing outer box 1, under the effect of spring 61 elasticity, electrically conductive cloth is drawn into between dust absorption loop path a, realizes the effective absorption to the dust, and dust diffusion causes harm, convenient practicality to teachers and students' health when avoiding the chalk vestige to erase.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. Dust-proof blackboard eraser for intelligent classroom, which is characterized in that the dust-proof blackboard eraser comprises: the box comprises an outer box body (1), an inner box body (2), a rectangular ring plate (3), a wiping plate (4), a support frame and a linkage device;
the outer box body (1) and the inner box body (2) are rectangular box bodies with one ends opened; the inner bottom surface of the outer box body (1) is connected with the outer bottom surface of the inner box body (2) through a plurality of connecting columns (11) distributed in a matrix manner; the rectangular ring plate (3) is slidably arranged between the outer box body (1) and the inner box body (2) and a dust collection loop (a) is formed between the rectangular ring plate (3) and the inner box body (2); a rectangular limiting ring (21) is arranged at the opening end of the inner box body (2);
the support frame comprises a support plate (51) and a support ring plate (52); the supporting plate (51) and the supporting ring plate (52) are both rectangular; the supporting plate (51) is arranged on the inner peripheral side of the inner box body (2) in a sliding way; the supporting ring plate (52) is slidably arranged in the rectangular limiting ring (21); the wiping plate (4) is arranged on the upper end surface of the support ring plate (52);
the linkage device comprises a plurality of springs (61) and two rotating structures; the supporting plate (51) is fixedly connected with the inner bottom surface of the inner box body (2) through a plurality of springs (61) distributed in a matrix manner; the two rotating structures are symmetrically arranged on the edges of two sides of the inner bottom surface of the inner box body (2); the rotating structure comprises a support column (62) and a rotating rod (63); the opposite side surfaces of the inner box body (2) are provided with vertical strip-shaped holes (22); a rectangular slide hole (631) is formed in the side face of the rotating rod (63); a cross shaft (621) is arranged between two side walls of the installation groove formed in the top end of the support column (62); the cross shaft (621) is slidably arranged in the rectangular sliding hole (631); one end of the rotating rod (63) penetrates through the vertical strip-shaped hole (22) to be hinged with the side face of the rectangular annular plate (3), and the other end of the rotating rod (63) is slidably installed on the bottom face of the supporting plate (51);
the inner side surface of the rectangular annular plate (3) is provided with conductive cloth; a rectangular annular sponge wiper (31) is arranged at the top end of the rectangular annular plate (3); the wiping plate (4) is positioned at the inner side of the sponge wiper (31); the conductive cloth is electrically connected with the electrostatic generator.
2. The dust-proof blackboard eraser for the intelligent classroom according to claim 1, wherein the bottom surface of the supporting plate (51) is provided with a horizontal slideway (511); limiting sliding chutes are symmetrically formed between the two side walls of the horizontal sliding way (511); one end of the rotating rod (63) is provided with a sliding shaft (632); two ends of the sliding shaft (632) are correspondingly and slidably arranged in the limiting sliding grooves.
3. The dust-proof blackboard eraser for the intelligent classroom according to claim 1 or 2, wherein the lateral surface of the supporting ring plate (52) is provided with a strip-shaped horizontal sliding hole (71); and a horizontal scraper (72) is arranged in the strip-shaped horizontal sliding hole (71) in a sliding manner.
4. The dust-proof blackboard eraser for smart classrooms as claimed in claim 3, wherein a forward and reverse rotation servo motor (73) is installed at the center of the outer surface of the supporting plate (51); the output end of the forward and reverse rotation servo motor (73) is coaxially provided with a rotating disc (74); the horizontal scraper (72) is movably connected with the peripheral side of the rotating disc (74) through a connecting rod (75); and two ends of the connecting rod (75) are respectively hinged with the side end of the horizontal scraper (72) and the side surface of the rotating disc (74).
5. The dust-proof blackboard eraser for intelligent classrooms as claimed in claim 4, wherein the controller (23) and the upright rod (24) are installed on the inner bottom surface of the inner box body (2); and a first pressure sensor (241) is arranged at the top end of the vertical rod (24).
6. The chalk-dust-proof blackboard eraser for intelligent classroom according to claim 5, wherein said upright (24) is higher than the stay (62); when the supporting plate (51) is pressed to the first pressure sensor (241), the outer surface of the wiping plate (4) is coplanar with the outer surface of the sponge wiper (31).
7. The dust-proof blackboard eraser for smart classroom according to claim 6, wherein the second pressure sensor (41) is installed at the center of the outer surface of the wiping plate (4); the controller (23) is respectively connected with the first pressure sensor (241), the second pressure sensor (41) and the positive and negative rotation servo motor (73) through electric signals.
8. The dust-proof blackboard eraser for a smart classroom according to claim 7, wherein the outer case (1) is provided with a switch button (12) on the outer side; the switch button (12) is in electric signal connection with the controller (23); after the controller (23) receives a switching signal transmitted by the switch button (12), the controller (23) controls the conductive cloth to be communicated with the electrostatic generator.
9. Control system of dust-proof blackboard eraser that wisdom classroom was used, its characterized in that includes: the device comprises a main controller (23), a first pressure sensor (241), a second pressure sensor (41) and a positive and negative rotation servo motor (73); the main controller (23) is respectively connected with a first pressure sensor (241), a second pressure sensor (41) and a positive and negative rotation servo motor (73) through electric signals;
when the second pressure sensor (41) detects and transmits a pressure signal to the main controller (23), the main controller (23) controls the forward and reverse rotation servo motor (73) to rotate forward so that the horizontal scraper (72) is attached to the inner side face of the rectangular annular plate (3);
when the first pressure sensor (241) detects and transmits a pressure signal to the main controller (23), the main controller (23) controls the positive and negative rotation servo motor (73) to rotate reversely, so that the horizontal scraper (72) slides to the inner side of the dust collection loop (a).
10. The control system of the dust-proof blackboard eraser for smart classroom according to claim 9, further comprising a switch button (12), a conductive cloth and an electrostatic generator; the main controller (23) is respectively connected with the switch button (12), the conductive cloth and the electrostatic generator through electric signals; when the main controller (23) receives a switching signal transmitted by the switch button (12), the main controller (23) controls the conductive cloth to be communicated with the electrostatic generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011456712.6A CN112590433A (en) | 2020-12-11 | 2020-12-11 | Dust-proof blackboard eraser for intelligent classroom and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011456712.6A CN112590433A (en) | 2020-12-11 | 2020-12-11 | Dust-proof blackboard eraser for intelligent classroom and control system thereof |
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| Publication Number | Publication Date |
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| CN112590433A true CN112590433A (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011456712.6A Withdrawn CN112590433A (en) | 2020-12-11 | 2020-12-11 | Dust-proof blackboard eraser for intelligent classroom and control system thereof |
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| CN (1) | CN112590433A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113744669A (en) * | 2021-09-14 | 2021-12-03 | 合肥工业大学 | Education technique publicity column |
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| CN2301332Y (en) * | 1997-09-25 | 1998-12-23 | 宋卫东 | Dust-removing blackboard eraser |
| CN103434315A (en) * | 2013-07-11 | 2013-12-11 | 陈浩 | Dust-proof blackboard eraser and application method thereof |
| CN104309377A (en) * | 2014-11-15 | 2015-01-28 | 贵州大学 | Dust absorbing type blackboard eraser |
| CN104648005A (en) * | 2014-06-30 | 2015-05-27 | 何小平 | Dust suction blackboard eraser |
| CN205112786U (en) * | 2015-11-13 | 2016-03-30 | 北京工商大学 | Multifunctional blackboard eraser |
| CN206030901U (en) * | 2016-08-14 | 2017-03-22 | 薛钦方 | Electrostatic dust -absorbing blackboard eraser |
| CN206551745U (en) * | 2016-12-05 | 2017-10-13 | 张军 | It is a kind of to improve the assistant teaching aid of classroom efficiency |
| CN108297583A (en) * | 2017-12-28 | 2018-07-20 | 平顶山学院 | Art Design room dust-absorbing blackboard device |
| CN211592017U (en) * | 2019-10-11 | 2020-09-29 | 范林昕 | Dustless blackboard eraser |
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2020
- 2020-12-11 CN CN202011456712.6A patent/CN112590433A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2301332Y (en) * | 1997-09-25 | 1998-12-23 | 宋卫东 | Dust-removing blackboard eraser |
| CN103434315A (en) * | 2013-07-11 | 2013-12-11 | 陈浩 | Dust-proof blackboard eraser and application method thereof |
| CN104648005A (en) * | 2014-06-30 | 2015-05-27 | 何小平 | Dust suction blackboard eraser |
| CN104309377A (en) * | 2014-11-15 | 2015-01-28 | 贵州大学 | Dust absorbing type blackboard eraser |
| CN205112786U (en) * | 2015-11-13 | 2016-03-30 | 北京工商大学 | Multifunctional blackboard eraser |
| CN206030901U (en) * | 2016-08-14 | 2017-03-22 | 薛钦方 | Electrostatic dust -absorbing blackboard eraser |
| CN206551745U (en) * | 2016-12-05 | 2017-10-13 | 张军 | It is a kind of to improve the assistant teaching aid of classroom efficiency |
| CN108297583A (en) * | 2017-12-28 | 2018-07-20 | 平顶山学院 | Art Design room dust-absorbing blackboard device |
| CN211592017U (en) * | 2019-10-11 | 2020-09-29 | 范林昕 | Dustless blackboard eraser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113744669A (en) * | 2021-09-14 | 2021-12-03 | 合肥工业大学 | Education technique publicity column |
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Application publication date: 20210402 |