CN107139609B - A kind of teaching of built-in removable template, which is painted, writes plate - Google Patents
A kind of teaching of built-in removable template, which is painted, writes plate Download PDFInfo
- Publication number
- CN107139609B CN107139609B CN201710266084.7A CN201710266084A CN107139609B CN 107139609 B CN107139609 B CN 107139609B CN 201710266084 A CN201710266084 A CN 201710266084A CN 107139609 B CN107139609 B CN 107139609B
- Authority
- CN
- China
- Prior art keywords
- template
- transparent panel
- teaching
- backboard
- rolling frame
- 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.)
- Expired - Fee Related
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 46
- 230000003287 optical effect Effects 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 210000003746 feather Anatomy 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000010422 painting Methods 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- 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
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
Abstract
Painted the present invention relates to a kind of teaching of built-in removable template and write plate, the scheme of solution is：Including the transparent panel and backboard being longitudinally vertically arranged, there is the template with transparent panel parallel contact between transparent panel and backboard；Multiple elastic supporting member for supporting optical member framves are installed on template right flank, the rolling frame of the hollow ball structure of right-end openings is installed on the right side of elastic supporting member for supporting optical member, friction pulley is installed with rolling frame；Friction pulley is contacted with backboard and rolling frame extruding；Magnetic metal block is installed on template, has moveable magnetic block corresponding with magnetic metal block on the left of transparent panel.The present invention not only realizes the repertoire of blackboard used in teaching at present, reusable coordinate system is additionally provided, and it is write optional position movement in plate and static painting, easy to which formula and figure are corresponded, teaching procedure is simplified, improves classroom efficiency.
Description
Technical field
The present invention relates to mathematics education model, particularly a kind of teaching of built-in removable template, which is painted, writes plate.
Background technology
During mathematical education, complicated mathematical formulae and functional relation are often relatively more abstract, in order to intuitively express,
Usually require to write formulation or function on plate and draw out curvilinear figure in its side painting in teaching, in order to be explained
Analyze and help classmates and understand.Due to some fixation formula or its figure be usually widely used in different scenes and
Frequently occur, these formula and its figure need to draw its curve one by one to help to understand, and are all needed before each Drawing of Curve
Coordinate system is first drawn, different described points is determined in coordinate system, then described point is drawn into approximate figure with curve connection, therefore
The repetition rendering rate that plane coordinates is tied up in teaching is very high, often occupies substantial amounts of time and efforts.Institute in teaching at present
Painting for using writes plate based on common blackboard, by constantly writing and erasing carries out teaching displaying, in different class hours,
Due to the needs of other contents of courses, rendered coordinate system can not often be retained and be reused.
The content of the invention
For the above situation, to make up the technical deficiency present in the prior art, the present invention is provided and moved built in one kind
The teaching of template, which is painted, writes plate.
Its solve technical solution be：Including the transparent panel and backboard being longitudinally vertically arranged, backboard is placed in the right side of transparent panel
, there is the template with transparent panel parallel contact in side between transparent panel and backboard；
Multiple horizontally disposed elastic supporting member for supporting optical member are fixed with template right flank, bullet is fixed on the right side of elastic supporting member for supporting optical member
Property supporting item on rolling frame, form rolling frame do each structure to swing with elastic supporting member for supporting optical member；
The friction ball that can be rolled in rolling frame is installed with rolling frame, the right end of friction ball is placed in outside rolling frame；
Friction ball is contacted with backboard and rolling frame extruding, is formed the rubbed ball of template and is moved between transparent panel and backboard
Structure；
Magnetic metal block is installed on template, is had on the left of transparent panel corresponding with magnetic metal block moveable magnetic
Block, form magnetic block when transparent plate surface moves, magnetic metal block magnetic block magneticaction lower band moving axes plate at the same time
Mobile structure.
Delicate structure of the present invention, it is easy to operate, the repertoire of blackboard used in teaching at present is not only realized, is also provided
Reusable coordinate system, and make it write optional position movement in plate and static painting, easy to by formula and figure one
One corresponds to, and simplifies teaching procedure, improves classroom efficiency.
Brief description of the drawings
Fig. 1 is the front view of the present invention.
Fig. 2 is the enlarged view of part A in Fig. 1 of the invention.
Fig. 3 is the left view part sectioned view of the present invention.
Fig. 4 is the enlarged view of part B in Fig. 3 of the invention.
Fig. 5 is front view when template of the invention links together with elastic supporting member for supporting optical member, rolling frame, friction ball.
Fig. 6 is right side when template of the invention of the invention links together with elastic supporting member for supporting optical member, rolling frame, friction ball
View.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Provided by Fig. 1 to Fig. 6, the present invention includes the transparent panel 1 and backboard 2 being longitudinally vertically arranged, and backboard 2 is placed in transparent panel
, there is the template 3 with 1 parallel contact of transparent panel on 1 right side between transparent panel 1 and backboard 2；
Multiple horizontally disposed elastic supporting member for supporting optical member 4 are fixed with 3 right flank of template, there is fixation on the right side of elastic supporting member for supporting optical member 4
Rolling frame 5 on elastic supporting member for supporting optical member 4, forms rolling frame 5 and does each structure to swing with elastic supporting member for supporting optical member 4；
The friction ball 6 that can be rolled in rolling frame 5 is installed with rolling frame 5, the right end of friction ball 6 is placed in outside rolling frame 5；
Friction ball 6 is contacted with backboard 2 and the extruding of rolling frame 5, forms the rubbed ball 6 of template 3 in transparent panel 1 and backboard 2
Between the structure that moves；
Magnetic metal block is installed, there is moveable magnetic corresponding with magnetic metal block in the left side of transparent panel 1 on template 3
Property block 7, form magnetic block 7 when being moved on 1 surface of transparent panel, magneticaction lower band moving axes of the magnetic metal block in magnetic block 7
The structure mobile at the same time of plate 3.
In order to make elastic supporting member for supporting optical member 4 reach preferably respectively to effect is swung, the elastic supporting member for supporting optical member 4 is elastomeric material system
Into barred body.
In order to make elastic supporting member for supporting optical member 4 reach preferably respectively to effect is swung, the elastic supporting member for supporting optical member 4 is spring.
In order to make stability when template 3 stops at an arbitrary position, the rolling frame 5 is the hollow ball knot of opening
Structure, friction ball 6 is installed in rolling frame 5 and clearance fit, equipped with the rubber being placed between rolling frame 5 and friction ball 6 in rolling frame 5
Film 8, friction ball 6 are contacted with backboard 2 and the extruding of sheet rubber 8, form the structure of the friction rolling in rolling frame 5 of friction ball 6.
In order to make template 3 reach preferably mobile effect, seat is installed between the transparent panel 1 and template 3
The inside of target 3 and the multiple balls contacted with transparent panel 1；Ball makes template 3 be separated with transparent panel 1, when template 3 moves
When, ball rolls between template 3 and transparent panel 1, reduces the frictional force between template 3 and transparent panel 1, template 3
Movement it is better.
In order to make magnetic block 7 reach preferably mobile effect, magnetic is installed between the transparent panel 1 and magnetic block 7
Property the inside of the block 7 and multiple balls contacted with transparent panel 1；Ball makes magnetic block 7 be separated with transparent panel 1, when magnetic block 7 moves
When, ball rolls between magnetic block 7 and transparent panel 1, reduces the frictional force between magnetic block 7 and transparent panel 1, magnetic block 7
Movement it is better.
In order to reach more preferable stationary stability, the template 3 and the back of the body when template 3 is extruded and is contacted with backboard 2
There is stripper plate 9 between plate 2,3 right flank of template is equipped with and is placed in 9 corresponding sliding slot of stripper plate, stripper plate 9 in sliding slot, extrudes
There are multiple thrust springs 10 that both ends are individually fixed on stripper plate 9 and sliding slot bottom between plate 9 and sliding slot bottom, form extruding
Plate is moved left and right through thrust spring 10 in sliding slot, and is contacted or separated structure with the extruding of backboard 2；Equipped with more on stripper plate 9
A magnetic metal block；In use, the magnetic force of the magnetic block 7 contacted with transparent panel 1 overcomes the thrust of thrust spring 10 to make stripper plate 9
It is moved to the left and is separated with backboard 2, when magnetic block 7 is away from transparent panel 1, the thrust of thrust spring 10 overcomes the magnetic force being gradually reduced
Stripper plate 9 is set to move right and be contacted with the extruding of backboard 2.
It is described in order to make the frictional force of acquisition bigger between stripper plate 9 and backboard 2 ensure the reliable static of template 3
9 right side of stripper plate on rubber layer 20 is installed.
In order to make stripper plate 9 lighter, the material of the stripper plate 9 is plastics, and plastics inner is inlaid with multiple magnetic
Property metal derby.
Effect is more easily taken in order to reach magnetic block 7, there is top-support 11, top branch on the transparent panel 1
The longitudinally disposed slip shaft 12 with sliding slot is installed on frame 11, shaft 13, the suit hole of shaft 13 are set with slip shaft 12
It is interior to be equipped with the feather key to match with the sliding slot of slip shaft 12, form the structure that shaft 13 slides back and forth on slip shaft 12；Shaft
Reel 14 is set with 13, forms the structure that reel 14 rotates in shaft 13；14 both ends of reel are equipped with catch, catch
There is the scroll spring 15 that one end is fixed in shaft 13 in outside, and the other end of scroll spring 15 is fixed on reel 14；Coiling
The halliard 16 that one end is connected on reel 14 is wound with wheel 14, the other end of halliard 16 is connected with magnetic block 7, forms
The structure that magnetic block 7 is moved up and down through halliard 16；The instantaneous twisting resistance of scroll spring 15 is not less than the gravity of magnetic block 7.
The present invention makes magnetic block 7 in use, magnetic block 7 is moved to the left side of transparent panel 1 and 9 corresponding position of stripper plate
The ball of right flank is contacted with transparent panel 1, and at this time in the case where the magnetic force of magnetic block 7 attracts, stripper plate 9 is moved to the left and drives rubber
Layer 20 is separated with backboard 2, and frictional force of the template 3 between transparent panel 1 and backboard 2 reduces.
Apply the active force of any direction on magnetic block 7, the stiction between friction ball 6 and backboard 2 and sheet rubber 8
Friction ball 6 is produced deflection on elastic supporting member for supporting optical member 4 through rolling frame 5, and then make between friction ball 6 and backboard 2 and sheet rubber 8
Squish area tapers into i.e. stiction and is gradually reduced, and friction ball 6 produces rolling trend；Meanwhile rolling frame 5 is with friction ball 6
Deflection make elastic supporting member for supporting optical member 4 produce flexural deformation, elastic force caused by 4 flexural deformation of elastic supporting member for supporting optical member make friction ball 6 with the back of the body
Plate 2, which produces, keeps contact；When the active force being applied on magnetic block 7 be more than at this time multiple elastic supporting member for supporting optical member 4 bending elastic force it
And when, template 3 starts to move in the same direction with the active force on magnetic block 7；Sliding friction between friction ball 6 and sheet rubber 8
When power is less than the force of sliding friction between friction ball 6 and backboard 2, the friction rolling in rolling frame of friction ball 6.
After active force disappears, friction ball 6 props up under the bending elastic force effect of elastic supporting member for supporting optical member 4, with rolling frame 5 in elasticity
Occur to reset deflection in support member 4, make friction ball 6 and 2 contact squeeze of backboard, it is quiet between friction ball 6 and backboard 2 and sheet rubber 8
Gradually increase stops friction rolling of the friction ball in rolling frame 5 to frictional force, between friction ball 6 and backboard 2 and sheet rubber 8 by
Cumulative big stiction makes template 3 and magnetic block 7 under the bending elastic force effect of elastic supporting member for supporting optical member 4 on magnetropism block 7
The opposite direction displacement of active force, in displacement process the flexural deformation of elastic supporting member for supporting optical member 4 be gradually reduced, make friction ball 6 and backboard 2
With the fully extruding contact of sheet rubber 8, when displacement stops, the stiction between friction ball 6 and backboard 2 and sheet rubber 8 makes coordinate
Plate 3 does not produce downward sliding and left and right deviates.
Magnetic block 7 is pulled to the left, stripper plate 9 is departed from its magnetic force scope, at this time under the active force of thrust spring 10,
Stripper plate 9 moves right and drives rubber layer 20 to be extruded with backboard 2 and contacts, and the frictional force between rubber layer 20 and backboard 2 makes seat
Target 3 reliably stops between transparent panel 1 and backboard 2.
When magnetic block 7 moves back and forth, the halliard 16 being connected with magnetic block 7 is swung with magnetic block 7, and reel 14 is rising
Slided under the swing effect of drop rope 16 through shaft 13 on slip shaft 12, i.e., reel 14 does the fortune of anterior-posterior translation through halliard 16
It is dynamic；When magnetic block 7 moves up and down, the halliard 16 being connected with magnetic block 7 is flexible with magnetic block 7, and reel 14 is in halliard
Rotated under 16 telescopic action in shaft 13, i.e., reel 14 through halliard 16 around the shaft 13 axis rotate；When putting on
When active force on magnetic block 7 disappears and magnetic absorption does not occur with magnetic adsorbing block 9 for magnetic block 7, reel 14 is in scrollwork bullet
Rotate movement under the torsion force of spring 15, so that halliard 16 does take-up winding on reel 14, magnetic block 7 is therewith
Rise to 11 lower edge of top-support and contacted with top-support 11.
After template 3 is moved to precalculated position, you can have on the enterprising line number graphic plotting of transparent panel 1, template 3
Default coordinate system, without in addition drawing coordinate system on transparent panel during graphic plotting；For different mathematical formulae or curve
Relation, can move multiple templates 3 and correspond therewith.
When elastic supporting member for supporting optical member 4 is barred body made of elastomeric material, in order to ensure that the active force put on magnetic block 7 disappears
After mistake, template 3 reliable in time at an arbitrary position can stop, when template 3 is static, friction ball 6 and backboard 2 and rolling frame
The sum of frictional force between frictional force and template 3 and transparent panel 1 between 5 is not less than template 3, elastic supporting member for supporting optical member 4, rolling
The sum of the gravity of frame 5, friction ball 6.
Delicate structure of the present invention, not only realizes the repertoire of blackboard in teaching at present, additionally provides reusable
Coordinate system, and it is write optional position movement in plate and static painting, easy to which formula and figure are corresponded, simplify
Teaching procedure, improves classroom efficiency.The motion mode of magnetic absorption makes dynamic structure simpler efficiently, while without unnecessary
Structure is limited the motion direction of template, and multiple templates can also be grouped together into sufficiently large coordinate range,
Make the drafting of figure and performance becomes apparent from and intuitively；Template can quickly disassemble and install between transparent panel and backboard, press
Need to use, adapt to the teaching needs of various courses.
Claims (10)
1. a kind of teaching of built-in removable template, which is painted, writes plate, it is characterised in that including the transparent panel being longitudinally vertically arranged（1）
And backboard（2）, backboard（2）It is placed in transparent panel（1）Right side, transparent panel（1）And backboard（2）Between have and transparent panel（1）It is parallel
The template of contact（3）；
Template（3）Multiple horizontally disposed elastic supporting member for supporting optical member are fixed with right flank（4）, elastic supporting member for supporting optical member（4）Right side has solid
It is scheduled on elastic supporting member for supporting optical member（4）On rolling frame（5）, form rolling frame（5）With elastic supporting member for supporting optical member（4）Do each structure to swing；
Rolling frame（5）Inside being installed with can be in rolling frame（5）The friction ball of interior rolling（6）, friction ball（6）Right end be placed in rolling frame
（5）Outside；
Friction ball（6）With backboard（2）And rolling frame（5）Extruding contact, forms template（3）Rubbed ball（6）In transparent panel（1）
And backboard（2）Between the structure that moves；
Template（3）On magnetic metal block, transparent panel are installed（1）There is moveable magnetic corresponding with magnetic metal block in left side
Property block（7）, form magnetic block（7）In transparent panel（1）When surface is moved, magnetic metal block is in magnetic block（7）Magneticaction under
Drive template（3）Mobile structure at the same time.
2. a kind of teaching of built-in removable template according to claim 1, which is painted, writes plate, it is characterised in that resilient support
Part（4）For barred body made of elastomeric material.
3. a kind of teaching of built-in removable template according to claim 1, which is painted, writes plate, it is characterised in that resilient support
Part（4）For spring.
4. a kind of teaching of built-in removable template according to claim 1, which is painted, writes plate, it is characterised in that rolling frame
（5）For the hollow ball structure of opening, friction ball（6）It is installed on rolling frame（5）Interior and clearance fit, rolling frame（5）Inside it is equipped with
It is placed in rolling frame（5）And friction ball（6）Between sheet rubber（8）, friction ball（6）With backboard（2）And sheet rubber（8）Extruding connects
Touch, form friction ball（6）In rolling frame（5）The structure of interior friction rolling.
5. a kind of teaching of built-in removable template according to claim 1, which is painted, writes plate, it is characterised in that transparent panel
（1）With template（3）Between be installed on template（3）Internal and and transparent panel（1）Multiple balls of contact.
6. a kind of teaching of built-in removable template according to claim 1, which is painted, writes plate, it is characterised in that transparent panel
（1）With magnetic block（7）Between be installed on magnetic block（7）Internal and and transparent panel（1）Multiple balls of contact.
7. a kind of teaching of built-in removable template according to claim 1, which is painted, writes plate, it is characterised in that template
（3）With backboard（2）Between have stripper plate（9）, template（3）Right flank is equipped with and stripper plate（9）Corresponding sliding slot, stripper plate
（9）It is placed in sliding slot, stripper plate（9）There are both ends to be individually fixed in stripper plate between sliding slot bottom（9）It is upper and sliding slot bottom
Multiple thrust springs（10）, stripper plate is formed through thrust spring（10）Moved left and right in sliding slot, and and backboard（2）Extruding contact
Or separated structure；Stripper plate（9）It is upper that multiple magnetic metal blocks are housed.
8. a kind of teaching of built-in removable template according to claim 7, which is painted, writes plate, it is characterised in that stripper plate
（9）Rubber layer is installed on right side（20）.
9. painted according to a kind of teaching of any built-in removable template of claim 7 or 8 and write plate, it is characterised in that
Stripper plate（9）Material be plastics, plastics inner is inlaid with multiple magnetic metal blocks.
10. a kind of teaching of built-in removable template according to claim 1, which is painted, writes plate, it is characterised in that transparent panel
（1）On have top-support（11）, top-support（11）On the longitudinally disposed slip shaft with sliding slot is installed（12）, slip shaft
（12）On be set with shaft（13）, shaft（13）Suit hole in be equipped with and slip shaft（12）The feather key that matches of sliding slot, structure
Into shaft（13）In slip shaft（12）On the structure that slides back and forth；Shaft（13）On be set with reel（14）, form reel
（14）In shaft（13）The structure of upper rotation；Reel（14）Both ends are equipped with catch, have one end to be fixed on shaft on the outside of catch
（13）On scroll spring（15）, scroll spring（15）The other end be fixed on reel（14）On；Reel（14）Upper winding
There is one end to be connected to reel（14）On halliard（16）, halliard（16）The other end and magnetic block（7）It is connected, forms magnetic
Property block（7）Through halliard（16）The structure moved up and down；Scroll spring（15）Instantaneous twisting resistance be not less than magnetic block（7）Weight
Power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266084.7A CN107139609B (en) | 2017-04-21 | 2017-04-21 | A kind of teaching of built-in removable template, which is painted, writes plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710266084.7A CN107139609B (en) | 2017-04-21 | 2017-04-21 | A kind of teaching of built-in removable template, which is painted, writes plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107139609A CN107139609A (en) | 2017-09-08 |
| CN107139609B true CN107139609B (en) | 2018-05-08 |
Family
ID=59773791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710266084.7A Expired - Fee Related CN107139609B (en) | 2017-04-21 | 2017-04-21 | A kind of teaching of built-in removable template, which is painted, writes plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107139609B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108394214B (en) * | 2018-03-05 | 2020-01-31 | 郑州航空工业管理学院 | multifunctional mathematical teaching display board |
| CN109050110A (en) * | 2018-07-11 | 2018-12-21 | 徐安旭 | Template adjustment mechanism, drawing board and the application method of mathematical education drawing board |
| CN108909287A (en) * | 2018-07-11 | 2018-11-30 | 侯翊宸 | A kind of drawing tool and method of adjustment of mathematical education adjustable coordinate plate |
| CN109130602A (en) * | 2018-09-12 | 2019-01-04 | 林哈尔 | Auxiliary tool is used in a kind of drawing of mathematical education |
| CN111016503A (en) * | 2019-12-24 | 2020-04-17 | 王誉为 | Blackboard of automatic brush of controllable type |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4672747A (en) * | 1985-12-09 | 1987-06-16 | Eleanor Turner | Magnetic device for aiding scaled reproduction of pictorial images in needlework |
| CN203818838U (en) * | 2014-05-08 | 2014-09-10 | 张秀娟 | Display board for economics teaching |
| CN203995331U (en) * | 2014-06-30 | 2014-12-10 | 梧州学院 | A kind of multifunctional drawing board |
| CN204915006U (en) * | 2015-08-12 | 2015-12-30 | 江大伟 | English teaching assisting device |
| CN205058962U (en) * | 2015-10-16 | 2016-03-02 | 张仲伟 | Make things convenient for blackboard of mathematical education |
| CN105882241A (en) * | 2014-12-07 | 2016-08-24 | 向志强 | Automatic dusting dust-free blackboard |
-
2017
- 2017-04-21 CN CN201710266084.7A patent/CN107139609B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4672747A (en) * | 1985-12-09 | 1987-06-16 | Eleanor Turner | Magnetic device for aiding scaled reproduction of pictorial images in needlework |
| CN203818838U (en) * | 2014-05-08 | 2014-09-10 | 张秀娟 | Display board for economics teaching |
| CN203995331U (en) * | 2014-06-30 | 2014-12-10 | 梧州学院 | A kind of multifunctional drawing board |
| CN105882241A (en) * | 2014-12-07 | 2016-08-24 | 向志强 | Automatic dusting dust-free blackboard |
| CN204915006U (en) * | 2015-08-12 | 2015-12-30 | 江大伟 | English teaching assisting device |
| CN205058962U (en) * | 2015-10-16 | 2016-03-02 | 张仲伟 | Make things convenient for blackboard of mathematical education |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107139609A (en) | 2017-09-08 |
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Granted publication date: 20180508 Termination date: 20190421 |