CN111520591A - Multimedia teaching device - Google Patents
Multimedia teaching device Download PDFInfo
- Publication number
- CN111520591A CN111520591A CN202010351219.1A CN202010351219A CN111520591A CN 111520591 A CN111520591 A CN 111520591A CN 202010351219 A CN202010351219 A CN 202010351219A CN 111520591 A CN111520591 A CN 111520591A
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- Prior art keywords
- wall
- rod
- multimedia teaching
- fixed
- sliding
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- 230000002457 bidirectional effect Effects 0.000 claims description 17
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
Images
Classifications
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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
- F16M11/20—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
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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
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention belongs to the technical field of teaching devices, in particular to a multimedia teaching device, and aims to solve the problems that the angle of the teaching device in the patent is inconvenient to adjust, so that people cannot see clear pictures sometimes, and the device has poor stability because stable support cannot be carried out in the display process. The invention controls the extension of the piston rod of the electric telescopic rod to adjust the supporting rod to the inclined state, so that the supporting rod can be used as a handle, the pushing device can move, the angle of the device can be conveniently adjusted, people can see clear pictures, stable support can be carried out in the display process, and the stability of the device is good.
Description
Technical Field
The invention relates to the technical field of teaching devices, in particular to a multimedia teaching device.
Background
Multimedia is a combination of various media, generally including text, sound, image and other various media forms, in a computer system, multimedia refers to a man-machine interactive information exchange and transmission media combining two or more media, the media used include characters, pictures, photos, sound, animation and films, and interactive functions provided by programs, and in the course of modern teaching, multimedia is often used for teaching.
Through the retrieval, chinese patent is granted No. CN206594435U, discloses a multimedia teaching device, including walking wheel, strengthening rib, battery and installing support, unable adjustment base is installed on the top of walking wheel, and unable adjustment base and bracing piece are connected, the strengthening rib is fixed in the bottom of bracing piece, and the top of strengthening rib is fixed with buffer spring.
The inconvenient adjusting device's of teaching device angle in the above-mentioned patent leads to sometimes unable people to see clear picture, and the in-process of show can't carry out stable support simultaneously, leads to the stability ability of device poor, obviously can't satisfy people's user demand already.
Disclosure of Invention
Based on the technical problems that the angle of the teaching device in the patent is inconvenient to adjust, so that people cannot see clear pictures sometimes, and the stability of the device is poor due to the fact that stable support cannot be carried out in the display process, the invention provides the multimedia teaching device.
The multimedia teaching device comprises a base, wherein an equipment box is fixed on the outer wall of the top of the base through screws, a fixed frame is arranged on the inner wall of the bottom of the equipment box, the inner wall of the fixed frame is connected with a bidirectional threaded rod through a bearing, two sliding rings are sleeved on the outer wall of the bidirectional threaded rod, the outer wall of one side, opposite to the two sliding rings, of each sliding ring is hinged with a same lifting frame, a sliding plate is arranged on the outer wall of the top of the lifting frame, a lifting column is fixed on the outer wall of the top of the sliding plate through screws, an installation frame is fixed on the outer wall of the top of the lifting column through screws, the inner walls of two sides of the installation frame are connected with a same liquid crystal display screen through bearings, a sleeve is arranged at one end of the liquid crystal display screen, a connecting spring is arranged on the inner wall of, and the one end that connecting spring was kept away from to spacing post is provided with changes the board, it is provided with two and inserts the post to change one side outer wall that the board is close to the installing frame, and the outer wall of installing frame sets up the jack that the equidistance annular distributes, insert post and jack looks adaptation, one side of base top outer wall is provided with the bracing piece, and the top outer wall of bracing piece sets up the recess, the inner wall sliding connection of recess has the telescopic link, and the outer wall of telescopic link has cup jointed reset spring, the outer wall that the telescopic link is located reset spring top has cup jointed the fixed plate, and the top of telescopic link is.
Preferably, an outer wall of one side of the equipment box is fixed with a motor through a screw, and an output shaft of the motor is connected with one end of the bidirectional threaded rod through a coupler.
Preferably, the sliding grooves are formed in the inner walls of the two sides of the equipment box, the inner walls of the sliding grooves are connected with rollers in a sliding mode, and one ends, far away from the sliding grooves, of the rollers are connected with the sliding plate through screws.
Preferably, the other side outer wall of equipment case articulates there is electric telescopic handle, and the outer wall of electric telescopic handle piston rod is articulated mutually with the bracing piece.
Preferably, the four corners department of base bottom outer wall all has seted up the shrink groove, and the top inner wall of shrink groove has the hydraulic stem through the fix with screw, and the one end of hydraulic stem piston rod has the universal wheel through the fix with screw.
Preferably, the outer wall of the bidirectional threaded rod is provided with two types of reversely arranged threads, and the two types of threads have the same length on the bidirectional threaded rod.
Preferably, the outer wall of the bottom of the base is provided with a first anti-slip groove, and the cross section of the first anti-slip groove is of a rectangular structure.
Preferably, the number of the limiting plates is four, and the four limiting plates are in a cross structure.
Preferably, the outer walls of the two sides of the base are both provided with anti-skid plates, the cross sections of the anti-skid plates are of right-angled triangle structures, and the outer wall of the bottom of each anti-skid plate is provided with a second anti-skid groove.
The beneficial effects of the invention are as follows:
1. the multimedia teaching device is provided with the rotating plate, the spring and the supporting rod, when the angle of the display screen needs to be adjusted, the rotating plate is held by a hand to pull the rotating plate outwards, the limiting column is separated from the jack, the rotating plate can be rotated to drive the display screen to rotate, the rotating plate is loosened after the rotation, the limiting column can be clamped in the jack under the action of the spring, so that the display screen is fixed after adjustment, the angle is convenient to adjust, when the display screen is used, the piston rod of the electric telescopic rod can be controlled to be shortened to adjust the supporting rod to be in a vertical state, the supporting plate can fix the mounting frame, when the display screen is not used, the piston rod of the electric telescopic rod is controlled to extend to adjust the supporting rod to be in an inclined state, the supporting rod can be used as a handle, the pushing device is moved, the angle of the adjusting device is convenient, and people can see, the stable support can be carried out in the process of showing, and the stability of device can be good.
2. This multimedia teaching device, through being provided with hydraulic stem and gyro wheel, the extension of control hydraulic stem piston rod, the universal wheel can be followed the shrinkage pool ejecting, and the device of being convenient for removes, and control hydraulic stem piston rod shrink, and the universal wheel is taken in and is fixed the device to shrinkage pool inner base contact ground, and it is all very convenient to remove and fix, and the gyro wheel can slide in the sliding tray, can improve the stability that the device is at height-adjusting.
3. This multimedia teaching device, through being provided with antiskid ribbed tile and second antiskid groove, the antiskid ribbed tile is the triangle-shaped structure, can follow the both sides of device and carry out auxiliary stay to the device, and second antiskid groove can play good anti-skidding effect, can effectively prevent that the device from taking place at the gliding condition of fixed in-process, has further improved the stability of device.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic diagram of an overall structure of a multimedia teaching apparatus according to the present invention;
FIG. 2 is a perspective view of a support bar structure of the multimedia teaching apparatus according to the present invention;
FIG. 3 is a schematic diagram of a rotating board structure of the multimedia teaching apparatus according to the present invention;
FIG. 4 is an enlarged schematic view of a multimedia teaching apparatus A according to the present invention;
fig. 5 is an enlarged schematic structural diagram of a multimedia teaching apparatus B according to the present invention.
In the figure: the device comprises a sliding plate 1, a roller 2, a lifting frame 3, a motor 4, a fixing frame 5, a hydraulic rod 6, a bidirectional threaded rod 7, a first anti-skid groove 8, a sliding ring 9, a base 10, a universal wheel 11, a second anti-skid groove 12, an anti-skid plate 13, an electric telescopic rod 14, a supporting rod 15, a lifting column 16, a mounting frame 17, a liquid crystal display screen 18, a reset spring 19, a fixing plate 20, a supporting plate 21, a rotating plate 22, an inserting column 23, a limiting plate 24, a limiting column 25, a telescopic rod 26, a sleeve 27 and a connecting spring 28.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-5, the multimedia teaching device comprises a base 10, an equipment box is fixed on the outer wall of the top of the base 10 through screws, a fixed frame 5 is arranged on the inner wall of the bottom of the equipment box, the inner wall of the fixed frame 5 is connected with a bidirectional threaded rod 7 through a bearing, the outer wall of the bidirectional threaded rod 7 is sleeved with two sliding rings 9, the outer wall of one side, opposite to the two sliding rings 9, is hinged with a same lifting frame 3, the outer wall of the top of the lifting frame 3 is provided with a sliding plate 1, the outer wall of the top of the sliding plate 1 is fixed with a lifting column 16 through screws, the outer wall of the top of the lifting column 16 is fixed with a mounting frame 17 through screws, the inner walls of two sides of the mounting frame 17 are connected with a same liquid crystal display 18 through bearings, one end of the liquid crystal display 18 is, limiting plate 24 that spacing post 25's outer wall has the equidistance to distribute through the fix with screw, and the one end that connecting spring 28 was kept away from to spacing post 25 is provided with changes board 22, it is provided with two and inserts post 23 to change one side outer wall that board 22 is close to installing frame 17, and the outer wall of installing frame 17 sets up the jack that the equidistance annular distributes, insert post 23 and jack looks adaptation, one side of base 10 top outer wall is provided with bracing piece 15, and the top outer wall of bracing piece 15 sets up flutedly, the inner wall sliding connection of recess has telescopic link 26, and the outer wall of telescopic link 26 has cup jointed reset spring 19, fixed plate 20 has been cup jointed to the outer wall that telescopic link 26 is located reset spring 19 top, and.
In the invention, the outer wall of one side of the equipment box is fixed with a motor 4 through a screw, and the output shaft of the motor 4 is connected with one end of a bidirectional threaded rod 7 through a coupler.
In the invention, sliding grooves are formed in the inner walls of two sides of the equipment box, the inner walls of the sliding grooves are connected with rollers 2 in a sliding mode, and one ends, far away from the sliding grooves, of the rollers 2 are connected with a sliding plate 1 through screws.
In the invention, the outer wall of the other side of the equipment box is hinged with an electric telescopic rod 14, and one end of a piston rod of the electric telescopic rod 14 is hinged with the outer wall of a support rod 15.
In the invention, four corners of the outer wall of the bottom of the base 10 are provided with contraction grooves, the inner wall of the top of each contraction groove is fixed with a hydraulic rod 6 through screws, and one end of a piston rod of each hydraulic rod 6 is fixed with a universal wheel 11 through screws.
In the invention, two opposite threads are arranged on the outer wall of the bidirectional threaded rod 7, and the two threads have the same length on the bidirectional threaded rod 7.
In the invention, the outer wall of the bottom of the base 10 is provided with a first anti-slip groove 8, and the cross section of the first anti-slip groove 8 is of a rectangular structure.
In the present invention, the number of the stopper plates 24 is four, and the four stopper plates 24 have a cross-shaped structure.
When the device is used, when the height of the device needs to be adjusted, the motor 4 is controlled to work, the motor 4 drives the bidirectional threaded rod 7 to rotate, the two sliding rings 9 move relatively, the lifting frame 3 is lifted to adjust the height of the display screen, when the angle of the display screen needs to be adjusted, the rotating plate 22 is held by hands to pull the rotating plate 22 outwards, the limiting column 25 is separated from the jack, the rotating plate 22 can be rotated to drive the display screen to rotate, the rotating plate 22 is loosened after the rotation, the limiting column 25 can be clamped into the jack under the action of the connecting spring 28, so that the display screen is fixed after adjustment, the angle is convenient to adjust, when the display screen is used, the piston rod of the electric telescopic rod 14 can be controlled to be shortened to adjust the supporting rod 15 to be in a vertical state, so that the supporting plate 21 can fix the mounting frame 17, when the display screen is not used, the piston rod of the electric telescopic rod 14 is controlled to extend, the support bar 15 can then be used as a handle to move the pushing device.
Example 2:
referring to fig. 1, the multimedia teaching apparatus, this embodiment compare with embodiment 1, further includes that the outer walls of both sides of the base 10 are provided with the anti-skid plate 13, and the cross-section of the anti-skid plate 13 is a right triangle structure, and the outer wall of the bottom of the anti-skid plate 13 is provided with the second anti-skid groove 12.
The antiskid plate 13 is of a triangular structure, can assist the device from two sides of the device, and the second antiskid grooves 12 can play a good antiskid effect, so that the situation that the device slides in the fixing process can be effectively prevented.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The multimedia teaching device comprises a base (10) and is characterized in that an equipment box is fixed on the outer wall of the top of the base (10) through screws, a fixed frame (5) is arranged on the inner wall of the bottom of the equipment box, the inner wall of the fixed frame (5) is connected with a bidirectional threaded rod (7) through a bearing, two sliding rings (9) are sleeved on the outer wall of the bidirectional threaded rod (7), the outer wall of one side, opposite to the two sliding rings (9), is hinged with a lifting frame (3), a sliding plate (1) is arranged on the outer wall of the top of the lifting frame (3), a lifting column (16) is fixed on the outer wall of the top of the sliding plate (1) through screws, a mounting frame (17) is fixed on the outer wall of the top of the lifting column (16) through screws, the inner walls of two sides of the mounting frame (17) are connected with a same liquid crystal display, the inner wall of the sleeve (27) is provided with a connecting spring (28), one end of the connecting spring (28) far away from the sleeve (27) is provided with a limiting column (25), the outer wall of the limiting column (25) is fixed with limiting plates (24) distributed equidistantly through screws, one end of the limiting column (25) far away from the connecting spring (28) is provided with a rotating plate (22), one side outer wall of the rotating plate (22) close to the installation frame (17) is provided with two inserting columns (23), the outer wall of the installation frame (17) is provided with jacks distributed equidistantly in an annular mode, the inserting columns (23) are matched with the jacks, one side of the top outer wall of the base (10) is provided with a supporting rod (15), the top outer wall of the supporting rod (15) is provided with a groove, the inner wall of the groove is connected with a telescopic rod (26) in a sliding mode, and the outer wall of, the outer wall of the telescopic rod (26) above the return spring (19) is sleeved with a fixing plate (20), and the top end of the telescopic rod is provided with a supporting plate (21).
2. Multimedia teaching apparatus according to claim 1, characterized in that the outer wall of one side of the equipment box is fixed with a motor (4) by screws, and the output shaft of the motor (4) is connected with one end of a bidirectional threaded rod (7) by a coupling.
3. The multimedia teaching device according to claim 1, wherein sliding grooves are formed in the inner walls of the two sides of the equipment box, the inner walls of the sliding grooves are connected with rollers (2) in a sliding mode, and one ends, far away from the sliding grooves, of the rollers (2) are connected with the sliding plate (1) through screws.
4. The multimedia teaching device according to claim 1, wherein the outer wall of the other side of the equipment box is hinged with an electric telescopic rod (14), and one end of a piston rod of the electric telescopic rod (14) is hinged with the outer wall of the support rod (15).
5. The multimedia teaching device as claimed in claim 1, wherein the base (10) is provided with a shrinking groove at each of four corners of the outer wall at the bottom, a hydraulic rod (6) is fixed to the inner wall at the top of the shrinking groove through a screw, and a universal wheel (11) is fixed to one end of a piston rod of the hydraulic rod (6) through a screw.
6. The multimedia teaching device according to claim 1, wherein the outer wall of the bidirectional threaded rod (7) is provided with two opposite threads, and the two threads have the same length on the bidirectional threaded rod (7).
7. The multimedia teaching device according to claim 1, wherein the outer wall of the bottom of the base (10) is provided with a first anti-slip groove (8), and the cross section of the first anti-slip groove (8) is rectangular.
8. Multimedia teaching apparatus according to claim 1, characterized in that the number of confinement plates (24) is four and four confinement plates (24) are of a cross-shaped configuration.
9. The multimedia teaching device according to claim 1, wherein the outer walls of both sides of the base (10) are provided with anti-skid plates (13), the cross section of each anti-skid plate (13) is of a right-angled triangle structure, and the outer wall of the bottom of each anti-skid plate (13) is provided with a second anti-skid groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010351219.1A CN111520591A (en) | 2020-04-28 | 2020-04-28 | Multimedia teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010351219.1A CN111520591A (en) | 2020-04-28 | 2020-04-28 | Multimedia teaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111520591A true CN111520591A (en) | 2020-08-11 |
Family
ID=71911165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010351219.1A Withdrawn CN111520591A (en) | 2020-04-28 | 2020-04-28 | Multimedia teaching device |
Country Status (1)
| Country | Link |
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| CN (1) | CN111520591A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060110A (en) * | 2020-09-29 | 2020-12-11 | 河南肆点零信息科技有限公司 | Intelligent teaching-assistant robot with protection function |
| CN112303354A (en) * | 2020-10-23 | 2021-02-02 | 沈阳理工大学 | Safety device for preventing toxic gas from leakage |
| CN112419798A (en) * | 2020-11-27 | 2021-02-26 | 佳木斯大学 | Presentation device is used in accounting computerization |
| CN112598966A (en) * | 2020-11-30 | 2021-04-02 | 重庆工业职业技术学院 | Teaching is with show board |
| CN112914233A (en) * | 2021-04-18 | 2021-06-08 | 南京樯图数据研究院有限公司 | Platform for serving scientific and technological guidance of enterprises |
| CN113470513A (en) * | 2021-07-30 | 2021-10-01 | 黑河学院 | A combination formula display device for digital protection of folk art |
| CN113487757A (en) * | 2021-05-21 | 2021-10-08 | 范慢慢 | Smart classroom equipment based on cloud computing |
-
2020
- 2020-04-28 CN CN202010351219.1A patent/CN111520591A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112060110A (en) * | 2020-09-29 | 2020-12-11 | 河南肆点零信息科技有限公司 | Intelligent teaching-assistant robot with protection function |
| CN112060110B (en) * | 2020-09-29 | 2024-03-12 | 河南肆点零信息科技有限公司 | Intelligent teaching aid robot with protection function |
| CN112303354A (en) * | 2020-10-23 | 2021-02-02 | 沈阳理工大学 | Safety device for preventing toxic gas from leakage |
| CN112303354B (en) * | 2020-10-23 | 2022-08-16 | 沈阳理工大学 | Safety device for preventing toxic gas from leakage |
| CN112419798A (en) * | 2020-11-27 | 2021-02-26 | 佳木斯大学 | Presentation device is used in accounting computerization |
| CN112419798B (en) * | 2020-11-27 | 2023-04-07 | 佳木斯大学 | Presentation device is used in accounting computerization |
| CN112598966A (en) * | 2020-11-30 | 2021-04-02 | 重庆工业职业技术学院 | Teaching is with show board |
| CN112914233A (en) * | 2021-04-18 | 2021-06-08 | 南京樯图数据研究院有限公司 | Platform for serving scientific and technological guidance of enterprises |
| CN113487757A (en) * | 2021-05-21 | 2021-10-08 | 范慢慢 | Smart classroom equipment based on cloud computing |
| CN113470513A (en) * | 2021-07-30 | 2021-10-01 | 黑河学院 | A combination formula display device for digital protection of folk art |
| CN113470513B (en) * | 2021-07-30 | 2022-08-02 | 黑河学院 | A combination formula display device for digital protection of folk art |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200811 |
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| WW01 | Invention patent application withdrawn after publication |