CN108986559A - A kind of device imparted knowledge to students for Internet education between school - Google Patents
A kind of device imparted knowledge to students for Internet education between school Download PDFInfo
- Publication number
- CN108986559A CN108986559A CN201810624051.XA CN201810624051A CN108986559A CN 108986559 A CN108986559 A CN 108986559A CN 201810624051 A CN201810624051 A CN 201810624051A CN 108986559 A CN108986559 A CN 108986559A
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- China
- Prior art keywords
- blackboard
- students
- imparted knowledge
- support column
- fixedly installed
- Prior art date
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 7
- 238000011900 installation process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a kind of devices imparted knowledge to students for Internet education between school, including pedestal, the upper end outer surface of the pedestal is fixedly installed with bearing block, and the upper end outer surface of bearing block is provided with the second connecting hole, the inside of second connecting hole is provided through the first connecting sleeve, and first the upper end outer surface of connecting sleeve be movably installed with support column, the upper end outer surface of the support column is fixedly installed with the first blackboard and the second blackboard, and the rear end of the first blackboard is arranged in the second blackboard.The device imparted knowledge to students for Internet education between school, blackboard can be rotated, conveniently it is sitting in the student viewing blackboard of different angle, also the height of adjustable blackboard, facilitate the teacher of different heights to use, also facilitates teacher's placement and blackboard writing pen of taking, while teacher can be facilitated to wipe blackboard, staff is also facilitated to carry out installing and dismounting to display screen, so that the usage experience of the device is more preferable.
Description
Technical field
The present invention relates to instructional device field, specially a kind of device imparted knowledge to students for Internet education between school.
Background technique
Instructional device is for facilitating the equipment of teaching in teaching, and the quality of instructional device can generate certain shadow to teaching
It rings, compares a kind of blackboard of pupil documented by Chinese patent CN201621277980.0, can only replace manually erasing the board,
The time to erase the board is reduced, the flexibility of the use of time, blackboard is poor, it has not been convenient to rotate, not can guarantee and be sitting in different angle
The demand of student, while being inconvenient to adjust the height of blackboard, it is unable to satisfy the demand of the teacher of different heights, also inconvenient teacher
It takes blackboard writing pen, also inconvenient teacher wipes blackboard, delays the class period of teacher and student, while being inconvenient to the people that works
Member carries out installing and dismounting to display screen, certain adverse effect is brought to actual use, so that the usage experience of the device is poor.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides it is a kind of between school Internet education impart knowledge to students device,
The device imparted knowledge to students for Internet education between school, can rotate blackboard, conveniently be sitting in the student of different angle
Blackboard is watched, also the height of adjustable blackboard, facilitates the teacher of different heights to use, while placement being facilitated to write with blackboard of taking
Word pen also facilitates teacher to wipe blackboard, and staff is also facilitated to carry out installing and dismounting to display screen, so that the device uses body
It tests more preferable.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: one kind is for internet between school
The upper end outer surface of the device of education and instruction, including pedestal, the pedestal is fixedly installed with bearing block, and outside the upper end of bearing block
Surface is provided with the second connecting hole, and the inside of second connecting hole is provided through the first connecting sleeve, and the first connector sleeve
The upper end outer surface of pipe is movably installed with support column, and the upper end outer surface of the support column is fixedly installed with the first blackboard and second
Blackboard, and the rear end of the first blackboard is arranged in the second blackboard, the side of first blackboard is installed by the position activity of close over
There is camera, the side of first blackboard is movably installed with display screen, and the fixed peace in the upper and lower ends outer surface of display screen
Equipped with mounting base, the leading exterior surface of the mounting base is provided with the first connecting hole, and the company of being internally provided with of the first connecting hole
Outbound, the outer surface of second blackboard are fixedly installed with the first link block, and the outer surface of first blackboard is provided with first
Link slot, and the inside of the first blackboard is provided through the first connecting shaft, the inner surface of first blackboard is provided with the second company
Access slot, and the inside of the second link slot is provided through fixing axle, the upper end outer surface of second blackboard is movably installed with
Two link blocks, and the inside of the second link block is provided through limit shaft, the inner surface of second link block is provided with third
Connecting hole, and the inside of third connecting hole is provided through the second connecting shaft, the side external surface activity installation of the support column
There is connecting rod, and connecting rod is fixedly installed with holder, the upper end outer surface setting of the holder far from the side of support column
There is putting hole, the side of the putting hole is provided with placing groove, and the front end of first blackboard is provided with blackboard eraser.
Preferably, the outer surface of the blackboard eraser is fixedly installed with the 4th link block, the front end appearance of first blackboard
Face is provided with third link slot, and the blackboard eraser is flexibly connected by the 4th link block, third link slot with the first blackboard.
Preferably, the inside of first connecting sleeve is provided through third connecting shaft, outside the front end of the support column
Surface is provided with the 4th connecting hole.
Preferably, the inner surface of the support column is fixedly installed with the second connecting sleeve, and the outer surface of the connecting rod is solid
Dingan County is equipped with third link block, and connecting rod is flexibly connected with the second connecting sleeve.
Preferably, a side external surface of the display screen is provided with power interface, the input of the display screen and camera
End is electrically connected the output end of power interface.
Preferably, second blackboard is flexibly connected by fixing axle and the second link slot with the first blackboard, and described second
Blackboard is flexibly connected by the first link block and the first link slot with the first blackboard.
Preferably, the quantity of the mounting base is four groups, and mounting base is in be placed in parallel, and the quantity of the connecting rod is
Two groups, and connecting rod is in be placed in parallel.
Preferably, first blackboard is identical as the material of the second blackboard, and the rotation angle of the first blackboard and the second blackboard
Degree is 360 deg.
(3) beneficial effect
The present invention provides it is a kind of between school Internet education impart knowledge to students device, have it is following the utility model has the advantages that
(1), this is used for the device that Internet education is imparted knowledge to students between school, and support column, the first connecting sleeve can be cooperated logical
It crosses bearing block to rotate display screen, is conveniently sitting in the student viewing blackboard of different angle, also avoid influencing student's study.
(2), this is used for the device that Internet education is imparted knowledge to students between school, can pass through connecting rod and the first connecting sleeve tune
The height of whole blackboard facilitates the teacher of different heights to use, so that the usage experience of the device is more preferable.
(3), this is used for the device that Internet education is imparted knowledge to students between school, and the second blackboard can be played by back-outing the first connecting shaft
The first blackboard and the second blackboard are opened while being used, is further ensured that the student for being sitting in different angle can see blackboard clearly, avoids shadow
Study is rung, while cooperating the second link block that can fix the second blackboard after opening with the first blackboard with the second connecting shaft, side
Just teacher uses.
(4), this is used for the device that Internet education is imparted knowledge to students between school, can be convenient teacher by holder and putting hole
Place blackboard writing pen, teacher also facilitated to place resources material and other items by placing groove, at the same cooperate the second connecting sleeve with
Connecting rod can carry out pull to holder, and teacher is facilitated to take writing pen and resources material.
(5), this is used for the device that Internet education is imparted knowledge to students between school, can cooperate the 4th link block and third link slot
Blackboard eraser is mounted on blackboard while can directly be moved to blackboard eraser, facilitates teacher to wipe blackboard, so that the device
Usage experience it is more preferable.
(6), this is used for the device that Internet education is imparted knowledge to students between school, and being coupled seat can facilitate staff to aobvious
Display screen carries out installing and dismounting, also avoids the case where damaging during the installation process to display screen.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is that the first blackboard of the invention combines view with the second blackboard；
Fig. 3 combines view with the second link block for fixing axle of the invention；
Fig. 4 combines view with holder for support column of the invention；
Fig. 5 combines view with bearing block for pedestal of the invention；
Fig. 6 is that the first blackboard of the invention combines view with blackboard eraser；
Fig. 7 is holder enlarged view of the invention；
Fig. 8 is flow chart of the invention.
In figure: 1, the first blackboard；2, the second blackboard；3, camera；4, display screen；5, mounting base；6, the first connecting hole；7,
Connecting pin；8, support column；9, the first connecting sleeve；10, the second connecting hole；11, bearing block；12, pedestal；13, connecting rod；14,
Holder；15, putting hole；16, placing groove；17, the first link block；18, the first link slot；19, the first connecting shaft；20, fixed
Axis；21, limit shaft；22, the second link block；23, the second connecting shaft；24, third connecting hole；25, the second link slot；26, second
Connecting sleeve；27, third link block；28, the 4th connecting hole；29, third connecting shaft；30, blackboard eraser；31, the 4th link block；
32, third link slot.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-8 is please referred to, the present invention provides a kind of technical solution: a kind of dress imparted knowledge to students for Internet education between school
It sets, including pedestal 12, the upper end outer surface of pedestal 12 is fixedly installed with bearing block 11, can be to the first blackboard by bearing block 11
1 is rotated with the second blackboard 2, can conveniently be sitting in the student viewing blackboard of different angle, and the upper end appearance of bearing block 11
Face is provided with the second connecting hole 10, and the inside of the second connecting hole 10 is provided through the first connecting sleeve 9, and the first connecting sleeve
9 upper end outer surface is movably installed with support column 8, by the first connecting sleeve 9 and adjustable first blackboard 1 of support column 8 with
The height of second blackboard 2 can facilitate different height teachers to use, and it is black that the upper end outer surface of support column 8 is fixedly installed with first
Plate 1 and the second blackboard 2, and the rear end of the first blackboard 1 is arranged in the second blackboard 2, the outer surface of the first blackboard 1 is provided with the first company
Access slot 18, the outer surface of the second blackboard 2 is fixedly installed with the first link block 17, and the inside of the first blackboard 1 is provided through
One connecting shaft 19 can be consolidated the second blackboard 2 after closing with the first blackboard 1 by the first connecting shaft 19 and the first link block 17
Fixed firmly the side of the first blackboard 1 is movably installed with display screen 4, is regarded by the teaching that display screen 4 can watch the recording of camera 3
Frequently, and the upper and lower ends outer surface of display screen 4 is fixedly installed with mounting base 5, and the leading exterior surface of mounting base 5 is provided with first
Connecting hole 6, and first connecting hole 6 is internally provided with connecting pin 7, can be convenient staff by mounting base 5 and connecting pin 7
Display screen 4 is installed, the inner surface of the first blackboard 1 is provided with the second link slot 25, and the inside of the second link slot 25 is passed through
It wears and is equipped with fixing axle 20, can be connect the first blackboard 1 with the second blackboard 2 by fixing axle 20, outside the upper end of the second blackboard 2
Surface activity is equipped with the second link block 22, and the inside of the second link block 22 is provided through limit shaft 21, the second link block
22 inner surface is provided with third connecting hole 24, and the inside of third connecting hole 24 is provided through the second connecting shaft 23, and second
Link block 22 can be rotated on the first blackboard 1 by limit shaft 21, then the second connecting shaft 23 is injected in third connecting hole 24
Portion by after opening the second blackboard 2 and the first blackboard 1 it is fixed, increasing its stability can facilitate teacher to use, the one of support column 8
Side external surface is movably installed with connecting rod 13, and connecting rod 13 is fixedly installed with holder 14 far from the side of support column 8, and puts
The upper end outer surface for setting box 14 is provided with putting hole 15, and putting hole 15 can place blackboard writing pen, and the side of putting hole 15 is set
It is equipped with placing groove 16, placing groove 16 can place resources material and other items, and the front end of the first blackboard 1 is provided with blackboard eraser 30, the
The side of one blackboard 1 is movably installed with camera 3 by the position of close over.
The outer surface of blackboard eraser 30 is fixedly installed with the 4th link block 31, and the leading exterior surface of the first blackboard 1 is provided with
Three link slots 32, blackboard eraser 30 are flexibly connected with the first blackboard 1 by the 4th link block 31, third link slot 32, are passed through simultaneously
4th link block 31, third link slot 32 can directly mobile blackboard wiping 30 quickly wipe blackboard, and teacher is facilitated to make
With；The inside of first connecting sleeve 9 is provided through third connecting shaft 29, and the leading exterior surface of support column 8 is provided with the 4th company
Hole 28 is connect, the first connecting sleeve 9 can be connect by third connecting shaft 29 with the 4th connecting hole 28 with support column 8；Support column 8 it is interior
Surface is fixedly installed with the second connecting sleeve 26, and the outer surface of connecting rod 13 is fixedly installed with third link block 27, and connecting rod
13 are flexibly connected with the second connecting sleeve 26, can be taken out to holder 14 by the second connecting sleeve 26 and connecting rod 13
It draws, teacher is facilitated to take writing pen；One side external surface of display screen 4 is provided with power interface, and display screen 4 is defeated with camera 3
Enter the output end that end is electrically connected power interface, camera 3 can record instructional video, and the instructional video of recording can be for transmission to
Display screen 4, student can carry out viewing study by display screen 4；Second blackboard 2 by fixing axle 20 and the second link slot 25 with
First blackboard 1 is flexibly connected, and the second blackboard 2 is flexibly connected by the first link block 17 and the first link slot 18 with the first blackboard 1；
The quantity of mounting base 5 is four groups, and mounting base 5, in being placed in parallel, the quantity of connecting rod 13 is two groups, and connecting rod 13 is in
It is placed in parallel, mounting base 5 can be convenient staff and carry out installation and removal to display screen 4, avoid during the installation process to aobvious
The case where display screen 4 damages；First blackboard 1 is identical as the material of the second blackboard 2, and the first blackboard 1 and the second blackboard 2
Rotation angle be 360 deg, the first blackboard 1 and the second blackboard 2 are rotated, different angle can be conveniently sitting in
Student sees blackboard.
In conclusion this is used for the device that Internet education is imparted knowledge to students between school, first power interface is powered, by camera
3 open and carry out teaching recording, say that class hour teacher can be by the bearing block 11 of setting and support column 8 to the first blackboard 1 and second
Blackboard 2 is rotated, and guarantees that the student for being sitting in different angle it can be seen that blackboard, while can pass through support column 8 and first
Connecting sleeve 9 adjusts the height of blackboard, the teacher of different heights can be facilitated to use, then the first connecting shaft 19 is back-outed second
Blackboard 2 is opened, and the first blackboard 1 can connect by the fixing axle 20 of setting with the second blackboard 2, then by the second connecting shaft 23 reeve the
Inside three connecting holes 24, the second blackboard 2 after capable of opening is fixed with the first blackboard 1, and increasing its stability can be conveniently old
Teacher uses the first blackboard 1 and the second blackboard 2 simultaneously, is also further ensured that the student for being sitting in different angle can see blackboard, always
Resources material can also be placed on the inside of placing groove 16 by teacher, while can be right by the second connecting sleeve 26 and connecting rod 13
Holder 14 carries out pull, the blackboard writing pen placed inside putting hole 15 of conveniently taking, can be with when needing to wipe blackboard
The 4th link block 31 is cooperated to wipe the movement of blackboard eraser 30 to blackboard by third link slot 32, it, can be with after End-of-Course
The instructional video that camera 3 is recorded is transferred to inside display screen 4, student can be learnt by watching display screen 4, simultaneously
The mounting base 5 of setting can facilitate staff to carry out installation and removal to display screen 4, avoid during the installation process to display screen
4 the case where damaging.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of device imparted knowledge to students for Internet education between school, including pedestal (12), it is characterised in that: the pedestal
(12) upper end outer surface is fixedly installed with bearing block (11), and the upper end outer surface of bearing block (11) is provided with the second connecting hole
(10), the inside of second connecting hole (10) is provided through the first connecting sleeve (9), and the first connecting sleeve (9) is upper
End outer surface be movably installed with support column (8), the upper end outer surface of the support column (8) be fixedly installed with the first blackboard (1) with
Second blackboard (2), and the second blackboard (2) is arranged in the rear end of the first blackboard (1), the side of first blackboard (1) is close to upper
The position of side is movably installed with camera (3), and the side of first blackboard (1) is movably installed with display screen (4), and display screen
(4) upper and lower ends outer surface is fixedly installed with mounting base (5), and the leading exterior surface of the mounting base (5) is provided with first
Connecting hole (6), and the first connecting hole (6) is internally provided with connecting pin (7), the fixed peace in the outer surface of second blackboard (2)
Equipped with the first link block (17), the outer surface of first blackboard (1) is provided with the first link slot (18), and the first blackboard (1)
Inside be provided through the first connecting shaft (19), the inner surface of first blackboard (1) is provided with the second link slot (25), and
The inside of second link slot (25) is provided through fixing axle (20), the upper end outer surface activity installation of second blackboard (2)
Have the second link block (22), and the inside of the second link block (22) is provided through limit shaft (21), second link block
(22) inner surface is provided with third connecting hole (24), and the inside of third connecting hole (24) is provided through the second connecting shaft
(23), a side external surface of the support column (8) is movably installed with connecting rod (13), and connecting rod (13) is far from support column (8)
Side be fixedly installed with holder (14), the upper end outer surface of the holder (14) is provided with putting hole (15), described to put
The side for setting hole (15) is provided with placing groove (16), and the front end of first blackboard (1) is provided with blackboard eraser (30).
2. a kind of device imparted knowledge to students for Internet education between school according to claim 1, it is characterised in that: described
The outer surface of blackboard eraser (30) is fixedly installed with the 4th link block (31), and the leading exterior surface of first blackboard (1) is provided with
Third link slot (32), the blackboard eraser (30) are lived by the 4th link block (31), third link slot (32) and the first blackboard (1)
Dynamic connection.
3. a kind of device imparted knowledge to students for Internet education between school according to claim 1, it is characterised in that: described
The inside of first connecting sleeve (9) is provided through third connecting shaft (29), and the leading exterior surface of the support column (8) is provided with
4th connecting hole (28).
4. a kind of device imparted knowledge to students for Internet education between school according to claim 1, it is characterised in that: described
The inner surface of support column (8) is fixedly installed with the second connecting sleeve (26), and the outer surface of the connecting rod (13) is fixedly installed with
Third link block (27), and connecting rod (13) is flexibly connected with the second connecting sleeve (26).
5. a kind of device imparted knowledge to students for Internet education between school according to claim 1, it is characterised in that: described
One side external surface of display screen (4) is provided with power interface, the input terminal electric connection of the display screen (4) and camera (3)
The output end of power interface.
6. a kind of device imparted knowledge to students for Internet education between school according to claim 1, it is characterised in that: described
Second blackboard (2) is flexibly connected by fixing axle (20) and the second link slot (25) with the first blackboard (1), second blackboard
(2) it is flexibly connected by the first link block (17) and the first link slot (18) with the first blackboard (1).
7. a kind of device imparted knowledge to students for Internet education between school according to claim 1, it is characterised in that: described
The quantity of mounting base (5) is four groups, and mounting base (5), in being placed in parallel, the quantity of the connecting rod (13) is two groups, and even
Extension bar (13) is in be placed in parallel.
8. a kind of device imparted knowledge to students for Internet education between school according to claim 1, it is characterised in that: described
First blackboard (1) is identical as the material of the second blackboard (2), and the rotation angle of the first blackboard (1) and the second blackboard (2) is 300
60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810624051.XA CN108986559A (en) | 2018-06-15 | 2018-06-15 | A kind of device imparted knowledge to students for Internet education between school |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810624051.XA CN108986559A (en) | 2018-06-15 | 2018-06-15 | A kind of device imparted knowledge to students for Internet education between school |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108986559A true CN108986559A (en) | 2018-12-11 |
Family
ID=64541400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810624051.XA Pending CN108986559A (en) | 2018-06-15 | 2018-06-15 | A kind of device imparted knowledge to students for Internet education between school |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108986559A (en) |
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| CN206451372U (en) * | 2017-01-14 | 2017-08-29 | 燕芳 | A kind of English language teaching equipment |
| CN206955541U (en) * | 2017-04-25 | 2018-02-02 | 芜湖格林美提子生态园有限公司 | A kind of grape non-soil culture lowering or hoisting gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2367164A2 (en) * | 2010-03-15 | 2011-09-21 | Waldner Labor- und Schuleinrichtungen GmbH | Board assembly |
| CN201838206U (en) * | 2010-07-06 | 2011-05-18 | 上海理工大学 | Display device for multimedia comprehensive information teaching |
| CN202703013U (en) * | 2012-08-14 | 2013-01-30 | 梁淼 | Portable antiskid folding blackboard |
| CN203198507U (en) * | 2013-03-14 | 2013-09-18 | 刘浩阳 | Foldable paging blackboard |
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| CN204970327U (en) * | 2015-09-30 | 2016-01-20 | 董国玉 | But height -adjusting's novel mathematics blackboard |
| CN205050383U (en) * | 2015-10-11 | 2016-02-24 | 天津铭实优信科技有限公司 | Novel portable information technology teaching frame |
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| CN206955541U (en) * | 2017-04-25 | 2018-02-02 | 芜湖格林美提子生态园有限公司 | A kind of grape non-soil culture lowering or hoisting gear |
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Application publication date: 20181211 |
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