CN112460428A - Hidden and simple operation's electronic screen for classroom - Google Patents
Hidden and simple operation's electronic screen for classroom Download PDFInfo
- Publication number
- CN112460428A CN112460428A CN202011342467.6A CN202011342467A CN112460428A CN 112460428 A CN112460428 A CN 112460428A CN 202011342467 A CN202011342467 A CN 202011342467A CN 112460428 A CN112460428 A CN 112460428A
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- rod
- connecting rod
- electronic screen
- block
- track
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- 239000000428 dust Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 21
- 206010066054 Dysmorphism Diseases 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 241001310793 Podium Species 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to the technical field of electronics, and discloses a hidden and conveniently-operated electronic screen for a classroom, which comprises a first motion chamber, wherein a second motion chamber is arranged on the right side of the first motion chamber, the rear side of a second connecting rod is rotatably connected with a first motion plate, an electronic screen is arranged on the upper side of the first motion plate, a second motion plate is arranged on the upper side of the electronic screen, the front side of the second motion plate is rotatably connected with a third connecting rod, and the front side of the second motion plate is rotatably connected with a fourth connecting rod on the left side of the third connecting rod. This hidden and simple operation's electronic screen for classroom rotates through driving first connecting rod, second connecting rod, third connecting rod and fourth connecting rod to drive first motion board and upwards move, the second motion board is opened to the both sides motion simultaneously, then the electronic screen on first motion board can move to outdoor, and this structure has reached hidden dust that prevents to pile up, can not influence the purpose of result of use.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a hidden electronic screen for a classroom, which is convenient and fast to operate.
Background
Along with the development of science and technology, electronic product has walked into the classroom to supplementary teaching work, wherein most of electronic display screen and podium are integrated, thereby make things convenient for the teacher to operate, and electronic display screen for teaching now more and more tends to the multi-functionalization direction.
Most electronic display screen for teaching and podium fuse into an organic whole on the existing market, mainly have the electronic display screen to expose for a long time and pile up the dust easily outside, influence its result of use, perhaps can be provided with hidden electronic display screen, but need electric drive to open it, the operation is not convenient, adopts the manpower to open electronic display screen in addition, when electronic display screen is withdrawing, falls fast easily, damages its inside electronic component easily. The above situation may cause problems of easy accumulation of dust, influence on use effect, inconvenient operation, easy quick drop, and easy damage of internal electronic components.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a hidden and conveniently operated electronic screen for a classroom, which has the advantages of hidden prevention of dust accumulation, no influence on the use effect, convenient operation, slow falling and difficult damage to internal electronic elements, and solves the problems that the existing electronic screen for teaching is easy to accumulate dust, influence on the use effect, inconvenient operation, easy and fast falling and easy damage to the internal electronic elements.
(II) technical scheme
In order to realize the purposes of preventing dust accumulation, not influencing the use effect, being convenient and fast to operate, slowly falling and not damaging internal electronic elements in a hidden way, the invention provides the following technical scheme: a hidden and convenient-to-operate electronic screen for classrooms comprises a first motion chamber, a second motion chamber is arranged on the right side of the first motion chamber, a U-shaped block is fixedly connected to the lower side of the second motion chamber, a first conical rod is slidably connected to the inner side of the U-shaped block, a first spring is arranged on the inner side of the first conical rod, a special-shaped block is arranged on the upper side of the U-shaped block, a first conical block is slidably connected to the outer side of the special-shaped block, a first sliding block is slidably connected to the upper side of the special-shaped block, a long-strip track is slidably connected to the outer side of the first sliding block, a first movable rod is rotatably connected to the upper side of the first sliding block, a pedal is rotatably connected to the upper side of the first movable rod, a first connecting rod is fixedly connected to the left side of the pedal, a first cylindrical rod is slidably connected to the inner side of the first, the left side of the first connecting rod is rotatably connected with a roller, the outer side of the roller is connected with a first track in a sliding manner, the left lower side of the first connecting rod is fixedly connected with a second connecting rod, the lower side of the first track is fixedly connected with a second track, the inner side of the second track is connected with a first movable block in a sliding manner, the left side of the first movable block is connected with a first sector gear in a sliding manner, the left side of the first sector gear is meshed with a second sector gear, the upper side of the second sector gear is rotatably connected with a first connecting rod, the upper side of the first connecting rod is rotatably connected with a second connecting rod, the rear side of the second connecting rod is rotatably connected with a first moving plate, the upper side of the first moving plate is provided with an electronic screen, the upper side of the electronic screen is provided with a second moving plate, the front side of the second moving plate is rotatably connected with a third connecting rod, the front side of the second moving plate is rotatably connected with a fourth, the inboard sliding connection of third track has the second slider, and the downside fixedly connected with second spring of second slider, the orbital right side fixedly connected with catch bar of third, the upside of catch bar is provided with first kelly, and the rear side rotation of first kelly is connected with first dead lever.
Preferably, the special-shaped block is provided with a semicircular arc block corresponding to the first conical rod, and the first conical rod and the semicircular arc block are clamped with each other through the corresponding semicircular arc block, so that the effect of fixing the pedal is achieved.
Preferably, the first conical block is provided with an arc surface corresponding to the first conical rod, and the arc surface is provided with a corresponding arc surface, so that the first conical block can push the first conical rod to move outwards, and the effect of separating the special-shaped block from the first conical rod is achieved.
Preferably, all be provided with the inclined plane that corresponds each other on second slider and the first kelly, and set up on the first kelly with the corresponding platform of second slider for when first kelly downstream contacted with the second slider, promote first kelly and rotate, then reach the effect of first kelly and second slider looks joint.
Preferably, the third rail is provided with a sliding groove corresponding to the second sliding block, and the second sliding block can move up and down in the sliding groove through the sliding groove corresponding to the third rail, so that the effect of slowly driving the first clamping rod to rise is achieved.
Preferably, a rectangular groove corresponding to the first sector gear is formed in the first movable block, and the first movable block can drive the first sector gear to rotate through the corresponding rectangular groove, so that the effect that the first sector gear is meshed with the second sector gear is achieved.
(III) advantageous effects
Compared with the prior art, the invention provides a hidden and convenient-to-operate electronic screen for classrooms, which has the following beneficial effects:
1. this hidden and simple operation's electronic screen for classroom, rotate around first axis of rotation through first dwang, then first dwang drives first movable block along second track upward movement, it drives first sector gear anticlockwise rotation to drive through the rectangular channel on the second track, make the meshing drive second sector gear rotate, then through driving first connecting rod, the second connecting rod, third connecting rod and fourth connecting rod rotate, thereby drive first motion board and upwards move, the second motion board is opened to both sides motion simultaneously, then electronic screen on it of first motion board can move to outdoor, this structure has reached hidden dust that prevents to pile up, can not influence the purpose of result of use.
2. This hidden and simple operation's electronic screen for classroom, effect through electronic screen and first motion board drives the dysmorphism piece, first toper piece upward movement, make dysmorphism piece and first toper pole phase separation, during because preceding downstream of the first connecting rod of downside, promote first kelly through the second slider and rotate, make its mutual joint, then first kelly drives second slider upward movement under the effect of electronic screen and first motion board, under the effect of the pull force through the second spring, make first motion board and electronic screen slowly descend, when first kelly moves the catch bar, the catch bar promotes first kelly and rotates, make it and second slider phase separation, then electronic screen resets, this structure has reached simple operation, slowly fall and inside electronic component's effect not fragile.
Drawings
FIG. 1 is a schematic front view of the internal structure of the present invention;
FIG. 2 is a schematic view of the first motion chamber of the present invention after motion;
FIG. 3 is a schematic structural diagram of a second track according to the present invention;
FIG. 4 is a schematic structural diagram of a shaped block according to the present invention;
FIG. 5 is a schematic view of the first moved shaped block of the present invention;
FIG. 6 is a schematic view of the second moved shaped block of the present invention;
fig. 7 is a schematic structural diagram of a third track according to the present invention.
In the figure: 1. a first motion chamber; 2. a second motion chamber; 3. a U-shaped block; 4. a first tapered rod; 5. a first spring; 6. a shaped block; 7. a first tapered block; 8. a first slider; 9. a long track; 10. a first link; 11. a pedal; 12. a first cylindrical rod; 13. a first rotating lever; 14. a first rotating shaft; 15. a first connecting rod; 16. a roller; 17. a first track; 18. a second connecting rod; 19. a second track; 20. a first movable block; 21. a first sector gear; 22. a second sector gear; 23. a first link; 24. a second link; 25. a first motion plate; 2501. an electronic screen; 26. a third link; 27. a second motion plate; 28. a fourth link; 29. a third track; 30. a second slider; 31. a second spring; 32. a push rod; 33. a first fixing lever; 34. a first clamping rod.
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.
Please refer to fig. 1-7, a hidden and simple operation's electronic screen for classroom, including first motion room 1, the right side of first motion room 1 is provided with second motion room 2, the downside fixedly connected with U-shaped piece 3 of second motion room 2, the inboard sliding connection of U-shaped piece 3 has first conical rod 4, the inboard of first conical rod 4 is provided with first spring 5, the upside of U-shaped piece 3 is provided with dysmorphism piece 6, set up the semicircle arc piece corresponding with first conical rod 4 on the dysmorphism piece 6, through being provided with corresponding semicircle arc piece, make first conical rod 4 and semicircle arc piece joint mutually, thereby reach the effect of fixed footboard 11. The outside sliding connection of dysmorphism piece 6 has first toper piece 7, has seted up on first toper piece 7 with the corresponding cambered surface of first toper pole 4 through being provided with corresponding cambered surface for first toper piece 7 can promote the outside motion of first toper pole 4, thereby reaches the effect of separation dysmorphism piece 6 and first toper pole 4.
The upper side of the special-shaped block 6 is connected with a first sliding block 8 in a sliding manner, the outer side of the first sliding block 8 is connected with a long-strip track 9 in a sliding manner, the upper side of the first sliding block 8 is connected with a first movable rod 10 in a rotating manner, the upper side of the first movable rod 10 is connected with a pedal 11 in a rotating manner, the left side of the pedal 11 is fixedly connected with a first connecting rod 15, the inner side of the first connecting rod 15 is connected with a first cylindrical rod 12 in a sliding manner, the rear side of the first cylindrical rod 12 is fixedly connected with a first rotating rod 13, the inner side of the first rotating rod 13 is connected with a first rotating shaft 14 in a rotating manner, the left side of the first connecting rod 15 is connected with a roller 16 in a rotating manner, the outer side of the roller 16 is connected with a first track 17 in a sliding manner, the left lower side of the first connecting rod 15 is fixedly connected with a second connecting rod 18, the lower side of the first track 17, through being provided with corresponding rectangular channel for first movable block 20 can drive first sector gear 21 and rotate, thereby reaches the effect that first sector gear 21 meshing drives second sector gear 22.
A first sector gear 21 is slidably connected to the left side of the first movable block 20, a second sector gear 22 is engaged with the left side of the first sector gear 21, a first link rod 23 is rotatably connected to the upper side of the second sector gear 22, a second link rod 24 is rotatably connected to the upper side of the first link rod 23, a first moving plate 25 is rotatably connected to the rear side of the second link rod 24, an electronic screen 2501 is arranged on the upper side of the first moving plate 25, a second moving plate 27 is arranged on the upper side of the electronic screen 2501, a third link rod 26 is rotatably connected to the front side of the second moving plate 27, a fourth link rod 28 is rotatably connected to the front side of the second moving plate 27 and to the left side of the third link rod 26, a third rail 29 is fixedly connected to the upper side of the second rail 19, a sliding slot corresponding to the second slider 30 is formed in the third rail 29, and the second slider 30 can move up and down in the sliding slot by providing the corresponding sliding slot, thereby achieving the effect of slowly lifting the first clamping rod 34. The inboard sliding connection of third track 29 has second slider 30, all be provided with the inclined plane that corresponds each other on second slider 30 and the first kelly 34, and set up the platform corresponding with second slider 30 on the first kelly 34, when making first kelly 34 downstream contact with second slider 30, promote first kelly 34 and rotate, then reach the effect of first kelly 34 and second slider 30 looks joint. A second spring 31 is fixedly connected to the lower side of the second slider 30, a push rod 32 is fixedly connected to the right side of the third rail 29, a first clamping rod 34 is arranged on the upper side of the push rod 32, and a first fixing rod 33 is rotatably connected to the rear side of the first clamping rod 34.
The working principle is as follows: when the device works, an operator steps down on the pedal 11 with his foot, the pedal 11 drives the first connecting rod 15 to slide downwards along the first track 17, so as to drive the first rotating rod 13 to rotate around the first rotating shaft 14, then the first rotating rod 13 drives the first movable block 20 to move upwards along the second track 19, the rectangular groove on the second track 19 drives the first sector gear 21 to rotate anticlockwise, so that the second sector gear 22 is driven to rotate by meshing, then the first connecting rod 23, the second connecting rod 24, the third connecting rod 26 and the fourth connecting rod 28 are driven to rotate, so as to drive the first moving plate 25 to move upwards, meanwhile, the second moving plate 27 is opened by moving towards two sides, so that the first moving plate 25 moves to the position shown in fig. 2, then the electronic screen 2501 on the first moving plate 25 can move to the outside, and the structure achieves the hidden type of preventing dust accumulation, The purpose of using effect is not affected.
When the electronic screen 2501 moves outdoors, the pedal 11 pushes the special-shaped block 6 to be clamped with the first tapered rod 4 on the inner side of the U-shaped block 3, so as to fix the electronic screen 2501, when the electronic screen 2501 needs to be retracted, an operator pushes the pedal 11 downwards to enable the first tapered block 7 to pass through the first tapered rod 4, then releases the pedal 11, drives the special-shaped block 6 and the first tapered block 7 to move upwards through the action of the electronic screen 2501 and the first moving plate 25, so that the special-shaped block 6 is separated from the first tapered rod 4, when the first connecting rod 15 on the lower side moves downwards before, pushes the first clamping rod 34 to rotate through the second sliding block 30, so as to be clamped with each other, then the first clamping rod 34 drives the second sliding block 30 to move upwards under the action of the electronic screen 2501 and the first moving plate 25, and enables the first moving plate 25 and the electronic screen 2501 to slowly descend under the action of the pulling force of the second spring 31, when the first clamping rod 34 moves to the pushing rod 32, the pushing rod 32 pushes the first clamping rod 34 to rotate, so that the first clamping rod is separated from the second sliding block 30, and then the electronic screen 2501 is reset, so that the effects of convenience in operation, slow falling and damage prevention of internal electronic elements are achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a hidden and simple operation's electronic screen for classroom, includes first motion room (1), its characterized in that: a second motion chamber (2) is arranged on the right side of the first motion chamber (1), a U-shaped block (3) is fixedly connected to the lower side of the second motion chamber (2), a first conical rod (4) is slidably connected to the inner side of the U-shaped block (3), a first spring (5) is arranged on the inner side of the first conical rod (4), a special-shaped block (6) is arranged on the upper side of the U-shaped block (3), a first conical block (7) is slidably connected to the outer side of the special-shaped block (6), a first sliding block (8) is slidably connected to the upper side of the special-shaped block (6), a long rail (9) is slidably connected to the outer side of the first sliding block (8), a first movable rod (10) is rotatably connected to the upper side of the first movable rod (10), a pedal (11) is rotatably connected to the upper side of the pedal (11), a first connecting rod (15) is fixedly connected to the left side of the pedal (11), a first, a first rotating rod (13) is fixedly connected to the rear side of the first cylindrical rod (12), a first rotating shaft (14) is rotatably connected to the inner side of the first rotating rod (13), a roller (16) is rotatably connected to the left side of the first connecting rod (15), a first track (17) is slidably connected to the outer side of the roller (16), a second connecting rod (18) is fixedly connected to the left lower side of the first connecting rod (15), a second track (19) is fixedly connected to the lower side of the first track (17), a first movable block (20) is slidably connected to the inner side of the second track (19), a first sector gear (21) is slidably connected to the left side of the first movable block (20), a second sector gear (22) is meshed to the left side of the first sector gear (21), a first connecting rod (23) is rotatably connected to the upper side of the second sector gear (22), and a second connecting rod (24) is rotatably connected to the upper side of the first connecting rod, the rear side of the second connecting rod (24) is rotatably connected with a first moving plate (25), the upper side of the first moving plate (25) is provided with an electronic screen (2501), the upper side of the electronic screen (2501) is provided with a second moving plate (27), the front side of the second moving plate (27) is rotatably connected with a third connecting rod (26), the front side of the second moving plate (27) is rotatably connected with a fourth connecting rod (28) on the left side of the third connecting rod (26), the upper side of the second track (19) is fixedly connected with a third track (29), the inner side of the third track (29) is slidably connected with a second sliding block (30), the lower side of the second sliding block (30) is fixedly connected with a second spring (31), the right side of the third track (29) is fixedly connected with a push rod (32), the upper side of the push rod (32) is provided with a first clamping rod (34), and the rear side of the first clamping rod (34) is rotatably connected with a first fixing rod (33).
2. The concealed and easy-to-operate electronic screen for classroom use as claimed in claim 1, wherein: a semicircular arc block corresponding to the first conical rod (4) is arranged on the special-shaped block (6).
3. The concealed and easy-to-operate electronic screen for classroom use as claimed in claim 1, wherein: the first conical block (7) is provided with a cambered surface corresponding to the first conical rod (4).
4. The concealed and easy-to-operate electronic screen for classroom use as claimed in claim 1, wherein: the second sliding block (30) and the first clamping rod (34) are provided with corresponding inclined planes, and the first clamping rod (34) is provided with a platform corresponding to the second sliding block (30).
5. The concealed and easy-to-operate electronic screen for classroom use as claimed in claim 1, wherein: and a sliding groove corresponding to the second sliding block (30) is formed in the third track (29).
6. The concealed and easy-to-operate electronic screen for classroom use as claimed in claim 1, wherein: the first movable block (20) is provided with a rectangular groove corresponding to the first sector gear (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011342467.6A CN112460428A (en) | 2020-11-24 | 2020-11-24 | Hidden and simple operation's electronic screen for classroom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011342467.6A CN112460428A (en) | 2020-11-24 | 2020-11-24 | Hidden and simple operation's electronic screen for classroom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112460428A true CN112460428A (en) | 2021-03-09 |
Family
ID=74808370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011342467.6A Withdrawn CN112460428A (en) | 2020-11-24 | 2020-11-24 | Hidden and simple operation's electronic screen for classroom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460428A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114403588A (en) * | 2021-12-10 | 2022-04-29 | 徐州赛森电子自动化技术有限公司 | Peep-proof device for computer safety information |
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| DE202004014791U1 (en) * | 2004-09-17 | 2004-12-30 | BZ Plankenhorn Ergonomiemöbel GmbH & Co. KG | Furniture, especially worktable |
| US20080087788A1 (en) * | 2006-10-13 | 2008-04-17 | Ko-Po Cheng | Height adjusting device |
| US20150346898A1 (en) * | 2014-06-02 | 2015-12-03 | Andrew Brown | High-definition blackboard |
| CN207486389U (en) * | 2017-10-30 | 2018-06-12 | 安庆师范大学 | A kind of microelectric technique apparatus for demonstrating for physics teaching |
| CN109935111A (en) * | 2017-12-16 | 2019-06-25 | 西安立元智能科技有限公司 | A kind of computer network teaching device |
| CN110886951A (en) * | 2018-09-11 | 2020-03-17 | 杭州海康威视数字技术股份有限公司 | Support for image acquisition, image acquisition system and method |
| CN210694111U (en) * | 2019-11-27 | 2020-06-05 | 贵州东冠科技有限公司 | Improved generation cloud video information all-in-one |
| CN211059705U (en) * | 2019-06-14 | 2020-07-21 | 天津万企科技发展有限公司 | Projector convenient to adjust |
| CN111911759A (en) * | 2020-07-30 | 2020-11-10 | 山东劳动职业技术学院（山东劳动技师学院） | Electronic commerce teaching device |
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2020
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004014791U1 (en) * | 2004-09-17 | 2004-12-30 | BZ Plankenhorn Ergonomiemöbel GmbH & Co. KG | Furniture, especially worktable |
| US20080087788A1 (en) * | 2006-10-13 | 2008-04-17 | Ko-Po Cheng | Height adjusting device |
| US20150346898A1 (en) * | 2014-06-02 | 2015-12-03 | Andrew Brown | High-definition blackboard |
| CN207486389U (en) * | 2017-10-30 | 2018-06-12 | 安庆师范大学 | A kind of microelectric technique apparatus for demonstrating for physics teaching |
| CN109935111A (en) * | 2017-12-16 | 2019-06-25 | 西安立元智能科技有限公司 | A kind of computer network teaching device |
| CN110886951A (en) * | 2018-09-11 | 2020-03-17 | 杭州海康威视数字技术股份有限公司 | Support for image acquisition, image acquisition system and method |
| CN211059705U (en) * | 2019-06-14 | 2020-07-21 | 天津万企科技发展有限公司 | Projector convenient to adjust |
| CN210694111U (en) * | 2019-11-27 | 2020-06-05 | 贵州东冠科技有限公司 | Improved generation cloud video information all-in-one |
| CN111911759A (en) * | 2020-07-30 | 2020-11-10 | 山东劳动职业技术学院（山东劳动技师学院） | Electronic commerce teaching device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114403588A (en) * | 2021-12-10 | 2022-04-29 | 徐州赛森电子自动化技术有限公司 | Peep-proof device for computer safety information |
| CN114403588B (en) * | 2021-12-10 | 2023-10-13 | 深圳市福达通网络科技有限公司 | Peep-proof device for computer safety information |
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