CN109203799B - Blackboard eraser capable of preventing chalk dust from flying - Google Patents
Blackboard eraser capable of preventing chalk dust from flying Download PDFInfo
- Publication number
- CN109203799B CN109203799B CN201811337672.6A CN201811337672A CN109203799B CN 109203799 B CN109203799 B CN 109203799B CN 201811337672 A CN201811337672 A CN 201811337672A CN 109203799 B CN109203799 B CN 109203799B
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- Prior art keywords
- cavity
- chalk dust
- blackboard eraser
- flying
- plate
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- 239000000428 dust Substances 0.000 title claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000036541 health Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 241000883990 Flabellum Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a blackboard eraser capable of preventing chalk dust from flying, which comprises a box body, wherein a first groove is formed in the upper end of the box body, a mounting groove is formed in the lower end of the box body, a plurality of groups of cleaning mechanisms are arranged inside the mounting groove, each group of cleaning mechanism comprises a mounting block which is bonded to the top end in the mounting groove, a cylindrical cavity is formed in each mounting block, an arc-shaped plate is bonded to the upper end of the inner side wall of each cavity, an elastic plate is bonded to the lower end of each cavity, and a plurality of air pipes are arranged on two sides of each cavity. Has the advantages that: when the blackboard eraser is separated from a blackboard, the deformed cavity is reset to absorb chalk dust, so that the flying chalk dust is absorbed into the cavity, the phenomenon that the body health is influenced by the absorption of teachers and students is avoided, the chalk dust in the cavity is absorbed on the electrostatic plate through the absorption mechanism, the chalk dust is prevented from being sprayed out along with air flow in the next cavity deformation, and the chalk dust can stably stay in the cavity.
Description
Technical Field
The invention relates to the technical field of teaching, in particular to a blackboard eraser capable of preventing chalk dust from flying.
Background
The blackboard eraser is a common article in the existing teaching field and is generally used for facilitating teachers to clean chalk characters on a blackboard, the blackboard eraser is convenient to use and high in efficiency, but when the existing blackboard eraser is used, chalk dust can be generated, part of the chalk dust is adsorbed on the blackboard eraser, but part of the chalk dust is gathered on the side edge of the blackboard eraser when the blackboard eraser moves, more and more, sponge at the lower end of the blackboard eraser cannot be effectively adsorbed, when the blackboard eraser moves rapidly, the chalk dust is attached to the side wall of the blackboard eraser due to self inertia, but when the blackboard eraser stops working and is far away from the blackboard, the chalk dust flies under the action of self gravity and wind power generated by the movement of the blackboard eraser.
The chalk dust particles are tiny and can float under the condition of small waving, spread to the whole classroom during the walking and breathing of the teacher, enter the body during the breathing of the teacher and the students, and seriously affect the body health of the teacher and the students under the long-term accumulation.
Therefore, a blackboard eraser for preventing chalk dust from flying is provided.
Disclosure of Invention
The invention aims to solve the problem that part of chalk dust flies when a blackboard eraser cleans the chalk dust in the prior art, and provides a blackboard eraser for preventing the chalk dust from flying.
In order to achieve the purpose, the invention adopts the following technical scheme:
a blackboard eraser capable of preventing chalk dust from flying comprises a box body, wherein a first groove is formed in the upper end of the box body, a mounting groove is formed in the lower end of the box body, a plurality of groups of cleaning mechanisms are arranged in the mounting groove, each group of cleaning mechanisms comprises a mounting block which is bonded to the top end in the mounting groove, a cylindrical cavity is formed in each mounting block, an arc-shaped plate is bonded to the upper end of the inner side wall of each cavity, an elastic plate is bonded to the lower end of each cavity, a plurality of air pipes are arranged on two sides of each cavity, each other end of each air pipe penetrates through the elastic plate and the mounting block, a first through hole is formed in the top end of each cavity, an annular plate is mounted in each first through hole, a hollow net box is slidably connected to the inside of each first groove, a plug board matched with the annular plate is arranged at the lower end of each net box, and, every reset spring's lower extreme all with the bottom fixed connection of first recess, the inside of cavity is equipped with adsorption apparatus and constructs.
In foretell blackboard eraser that prevents chalk dust from flying upward, adsorption apparatus constructs including the annular electrostatic plate of fixed mounting in the middle part of the cavity, the middle part of electrostatic plate is equipped with the pivot, the both sides of pivot all run through the installation piece and insert and establish in the lateral wall of mounting groove, in the installation piece both sides all fixed cover has been connect the gyro wheel in the pivot, in the electrostatic plate symmetry fixedly connected with a plurality of flabellums in the pivot, every the flabellum all contacts with the electrostatic plate.
In the blackboard eraser for preventing chalk dust from flying, the top end of the net box is symmetrically and fixedly connected with four supporting blocks.
In the blackboard eraser for preventing chalk dust from flying, the lower end of each mounting block is provided with a stripe groove.
Compared with the prior art, the blackboard eraser for preventing chalk dust from flying has the advantages that:
1. by arranging the deformable mounting block, when the blackboard eraser is separated from a blackboard, the deformed cavity is reset to absorb chalk dust, so that flying chalk dust is absorbed into the cavity, and the influence on body health caused by the absorption of teachers and students is avoided;
2. the invention enables the chalk dust in the cavity to be adsorbed on the electrostatic plate through the adsorption mechanism, thereby avoiding the chalk dust from being sprayed out along with the air flow in the next cavity deformation, and enabling the chalk dust to stably stay in the cavity.
Drawings
Fig. 1 is a schematic view of an internal structure of a blackboard eraser for preventing chalk dust from flying according to the present invention;
FIG. 2 is a schematic view of an internal mechanism of a mounting block in the blackboard eraser for preventing chalk dust from flying according to the present invention;
fig. 3 is a schematic side view of a blackboard eraser for preventing chalk dust from flying according to the present invention.
In the figure: the fan comprises a box body 1, a mounting groove 2, a first groove 3, a mounting block 4, a cavity 5, an arc-shaped plate 6, an elastic plate 7, an air pipe 8, an annular plate 9, a net box 10, an inserting plate 11, a return spring 12, a supporting block 13, a rotating shaft 14, a roller 15, an electrostatic plate 16 and fan blades 17.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1-3, a blackboard eraser capable of preventing chalk dust from flying comprises a box body 1, wherein a first groove 3 is formed in the upper end of the box body 1, a mounting groove 2 is formed in the lower end of the box body 1, a plurality of groups of cleaning mechanisms are arranged inside the mounting groove 2, each group of cleaning mechanisms comprises a mounting block 4 which is bonded to the top end of the mounting groove 2, the mounting blocks 4 can be made of sponge, a stripe groove is formed in the lower end of each mounting block 4, friction force is increased through the stripe grooves, and more chalk dust can be stored conveniently.
A cylindrical cavity 5 is formed in each mounting block 4, an arc-shaped plate 6 is bonded at the upper end of the inner side wall of each cavity 5, an elastic plate 7 is bonded at the lower end of each cavity 5, the elastic plate 7 facilitates the reset of the mounting block 4 and also plays a role in sealing, the mounting block 4 made of sponge is breathable, a plurality of air pipes 8 are arranged on two sides of each cavity 5, the arc-shaped plates 6 and the air pipes 8 are made of materials with smooth inner walls, one end of each air pipe 8 penetrates through the elastic plate 7 and the mounting block 4, a first through hole is formed in the top end of each cavity 5, an annular plate 9 is arranged in the first through hole, a hollow net box 10 is connected in a sliding mode inside each first groove 3, an inserting plate 11 matched with the annular plate 9 is arranged at the lower end of the net box 10, a plurality of reset springs 12 are symmetrically and fixedly connected to the lower end of each net box 10, the lower end of each reset spring 12 is fixedly connected with the bottom, net box 10 contracts in first recess 3, and picture peg 11 inserts in the annular slab 9 to closed annular slab 9, the lower extreme and the elastic plate 7 of installation piece 4 warp, and cavity 5 compression, gaseous 8 blowout that can only pass through, the lower extreme and the blackboard area of contact of installation piece 4 this moment are the biggest, and the mr removes box body 1 this moment, drives installation piece 4 and removes, thereby cleans the blackboard.
After the blackboard eraser is cleaned and used, the blackboard eraser is placed upside down on the edge below the blackboard or on a desk, and the cavity 5 is restored under the elastic action of the elastic plate 7 and the mounting block 4.
The top end of the net box 10 is symmetrically and fixedly connected with four supporting blocks 13 to prevent the net box 10 from being adhered with chalk dust, an adsorption mechanism is arranged inside the cavity 5, the adsorption mechanism comprises an annular electrostatic plate 16 fixedly arranged in the middle of the cavity 5, the outer side wall of the electrostatic plate 16 is smooth, a rotating shaft 14 is arranged in the middle of the electrostatic plate 16, two sides of the rotating shaft 14 penetrate through the mounting block 4 and are inserted into the side wall of the mounting groove 2, the rotating shafts 14 at the two sides of the mounting block 4 are fixedly sleeved with the rollers 15, the rollers 15 are made of elastic materials, so that the rollers 15 deform along with the deformation of the mounting block 4, a plurality of fan blades 17 are symmetrically and fixedly connected on the rotating shaft 14 in the electrostatic plate 16, each fan blade 17 is contacted with the electrostatic plate 16, the blackboard eraser moves, the roller 15 rotates, the rotating shaft 14 drives the fan blade 17 to rotate, and the fan blade 17 and the electrostatic plate 16 rub to generate static electricity, so that the chalk dust is adsorbed in the cavity 5.
It is worth noting that in order to better exert the advantages of the blackboard eraser, when the blackboard eraser is used, the blackboard eraser is far away from the blackboard after being moved for erasing each time, so that the cavity 5 is convenient to reset and absorb chalk dust, and the blackboard is prevented from being cleaned by continuously moving the blackboard eraser under the condition that the cavity 5 is compressed.
When the blackboard eraser is used, a user holds the box body 1 by hand, the net box 10 contracts into the first groove 3 under the pressure of the palm of the teacher, the inserting plate 11 is inserted into the annular plate 9 to seal the annular plate 9, the lower end of the mounting block 4 and the elastic plate 7 deform, the cavity 5 is compressed, gas overflows through the air pipe 8, the contact area between the lower end of the mounting block 4 and a blackboard is the largest at the moment, the teacher moves the box body 1 at the moment to drive the mounting block 4 to move, so that the blackboard is cleaned, part of chalk dust is gathered on two sides of the mounting block 4, when the blackboard eraser is far away from the blackboard, the cavity 5 is restored to the original state under the elastic action of the mounting block 4 and the elastic plate 7, and the gas with the chalk dust on two sides is sucked through the air pipe 8, so that the chalk dust is prevented from flying up, and the injury to;
in the moving process of the mounting block 4, the roller 15 rotates to drive the rotating shaft 14 to rotate, the fan blade 17 and the electrostatic plate 16 are rubbed to generate static electricity on the electrostatic plate 16, the electrostatic plate 16 with the static electricity adsorbs chalk dust in the cavity 5, and the problem that the chalk dust is sprayed out in the next contraction process of the cavity 5 is solved;
after the blackboard eraser is used, the blackboard eraser is inverted on the edge below the blackboard, the support block 13 supports the blackboard eraser, the box body 1 is jacked up by the reset spring 12, the inserting plate 11 is far away from the annular plate 9, so that the first through hole is communicated, after a period of time, static electricity on the electrostatic plate 16 is contacted with the blackboard through the fan blade 17, the rotating shaft 14 and the box body 1, grounding is lost, chalk dust slides on the arc-shaped plate 6 and slides out on the edge on the blackboard through the annular plate 9, only simple cleaning is needed, due to the support of the support block 13, the chalk dust on the edge of the cleaning cloth cannot be adhered to the net box 10, and the use of a teacher next time is facilitated.
Although the terms of the box body 1, the mounting groove 2, the first groove 3, the mounting block 4, the cavity 5, the arc-shaped plate 6, the elastic plate 7, the air pipe 8, the annular plate 9, the net box 10, the inserting plate 11, the return spring 12, the supporting block 13, the rotating shaft 14, the roller 15, the electrostatic plate 16, the fan blade 17, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (4)
1. The blackboard eraser capable of preventing chalk dust from flying comprises a box body (1) and is characterized in that a first groove (3) is formed in the upper end of the box body (1), a mounting groove (2) is formed in the lower end of the box body (1), a plurality of groups of cleaning mechanisms are arranged inside the mounting groove (2), each group of cleaning mechanisms comprises mounting blocks (4) which are bonded to the top end of the mounting groove (2), a cylindrical cavity (5) is formed in each mounting block (4), an arc-shaped plate (6) is bonded to the upper end of the inner side wall of each cavity (5), an elastic plate (7) is bonded to the lower end of each cavity (5), a plurality of air pipes (8) are arranged on two sides of each cavity (5), the other end of each air pipe (8) penetrates through the elastic plate (7) and the mounting blocks (4), and a first through hole is formed in the top end of each cavity (5, install annular slab (9) in the first through-hole, the inside sliding connection of first recess (3) has hollow net box (10), the lower extreme of net box (10) is equipped with picture peg (11) that matches with annular slab (9), a plurality of reset spring (12) of lower extreme symmetry fixedly connected with of net box (10), every the lower extreme of reset spring (12) all with the bottom fixed connection of first recess (3), the inside of cavity (5) is equipped with adsorption apparatus.
2. The blackboard eraser capable of preventing chalk dust from flying up according to claim 1, wherein the adsorption mechanism comprises an annular electrostatic plate (16) fixedly installed in the middle of the cavity (5), a rotating shaft (14) is arranged in the middle of the electrostatic plate (16), both sides of the rotating shaft (14) penetrate through the installation block (4) and are inserted into the side wall of the installation groove (2), rollers (15) are fixedly sleeved on the rotating shaft (14) on both sides of the installation block (4), a plurality of fan blades (17) are symmetrically and fixedly connected to the rotating shaft (14) in the electrostatic plate (16), and each fan blade (17) is in contact with the electrostatic plate (16).
3. The blackboard eraser for preventing chalk dust from flying as claimed in claim 1, wherein the top end of the net box (10) is symmetrically and fixedly connected with four supporting blocks (13).
4. The blackboard eraser capable of preventing chalk dust from flying as claimed in claim 1, wherein the lower end of each mounting block (4) is provided with a stripe groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811337672.6A CN109203799B (en) | 2018-11-12 | 2018-11-12 | Blackboard eraser capable of preventing chalk dust from flying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811337672.6A CN109203799B (en) | 2018-11-12 | 2018-11-12 | Blackboard eraser capable of preventing chalk dust from flying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109203799A CN109203799A (en) | 2019-01-15 |
| CN109203799B true CN109203799B (en) | 2020-10-02 |
Family
ID=64996136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811337672.6A Expired - Fee Related CN109203799B (en) | 2018-11-12 | 2018-11-12 | Blackboard eraser capable of preventing chalk dust from flying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109203799B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986224A (en) * | 1975-05-16 | 1976-10-19 | Yang Teh Tsao | Eraser with dust-collecting means |
| US4080683A (en) * | 1976-11-22 | 1978-03-28 | Chong Sun Yi | Chalk board eraser |
| JP2507147Y2 (en) * | 1992-08-05 | 1996-08-14 | さくら精機株式会社 | Eraser |
| JP2013184345A (en) * | 2012-03-07 | 2013-09-19 | Pilot Corporation | Eraser for white board |
| CN203157519U (en) * | 2013-01-10 | 2013-08-28 | 中国石油大学(华东) | Electrostatic-precipitation blackboard eraser |
| CN203974336U (en) * | 2014-01-19 | 2014-12-03 | 浙江商业职业技术学院 | Aspirating eraser |
| CN106004185B (en) * | 2016-06-29 | 2018-02-27 | 裴萌 | A kind of blackboard eraser for preventing that chalk dust from flying upward |
| CN107776298A (en) * | 2016-08-25 | 2018-03-09 | 刘倩 | A kind of eraser with means for absorbing chalk dust |
| CN206374427U (en) * | 2016-11-10 | 2017-08-04 | 韩熠南 | A kind of large-scale dust-free black board eraser for magnet board |
| CN206357880U (en) * | 2016-11-22 | 2017-07-28 | 黄锦洪 | A kind of hand electric blackboard eraser |
| CN208069214U (en) * | 2017-12-25 | 2018-11-09 | 张文峰 | A kind of dust absorption blackboard eraser |
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2018
- 2018-11-12 CN CN201811337672.6A patent/CN109203799B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN109203799A (en) | 2019-01-15 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200904 Address after: 318025 Pukou East Village, Yuanqiao Town, Huangyan District, Taizhou City, Zhejiang Province Applicant after: Taizhou Huangyan Dingjian Plastic Industry Co.,Ltd. Address before: 110000 No. 120 Dongling Road, Shenhe District, Liaoning, Shenyang Applicant before: Zhang Hongxia |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201002 |