CN111754821B - Portable information technology's teaching equipment - Google Patents
Portable information technology's teaching equipment Download PDFInfo
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- CN111754821B CN111754821B CN202010500761.9A CN202010500761A CN111754821B CN 111754821 B CN111754821 B CN 111754821B CN 202010500761 A CN202010500761 A CN 202010500761A CN 111754821 B CN111754821 B CN 111754821B
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- 238000005516 engineering process Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 238000013016 damping Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 244000309464 bull Species 0.000 claims 1
- 238000009434 installation Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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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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- Theoretical Computer Science (AREA)
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Abstract
The invention discloses portable information technology teaching equipment which comprises a fixed rod, a plurality of sections of manual telescopic rods, a teaching equipment mechanism and a screw rod, wherein limiting rods are arranged on the left side and the right side of the fixed rod, a base is arranged on the inner side of each limiting rod, driven rotating rods are connected to the left side and the right side of the lower end of the base in a bearing mode, the middle of the lower end of the base is connected with a movable plate through a spring, connecting rods are welded to the left side and the right side of the movable plate, tooth blocks are arranged on the outer sides of the connecting rods, and gears are meshed with the outer sides of the tooth blocks. This portable information technology's teaching equipment control guard plate removes, opens the guard plate alright accomodate teaching equipment mechanism to close the guard plate in teaching equipment mechanism's top, protect teaching equipment mechanism and accomodate, and then follow-up opens the guard plate, when shifting out teaching equipment mechanism, utilizes closing of guard plate to carry out the fixed stay to teaching equipment mechanism, the improvement device practicality.
Description
Technical Field
The invention relates to the technical field of information technology teaching aids, in particular to portable information technology teaching equipment.
Background
Teaching equipment includes multimedia device, classroom basic unit, teaching software class etc. along with social informatization's development popularization, teaching equipment is also progressively being updated, and the performance is also improving, in comparatively big classroom, for the convenience to teach the student, is convenient for directly look up the data and supply the student to study, can be equipped with the teaching computer, uses the multimedia to teach, is a teaching equipment based on information technology, can improve student's study enthusiasm.
However, the existing information-based teaching equipment still has the defects in the using process, the teaching equipment cannot be conveniently moved and carried, the updating and the maintenance are inconvenient, the public computer screen cannot be stored and protected, the phenomenon of scraping and depositing dust on the public computer screen is easy to occur, and the use of the multimedia teaching equipment is not facilitated.
Therefore, we propose a teaching apparatus of portable information technology in order to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide portable information technology teaching equipment to solve the problems that the existing information teaching equipment in the market cannot conveniently move and carry the teaching equipment and cannot store and protect a public computer screen, which are provided by the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a portable information technology teaching device comprises a fixed rod, a plurality of manual telescopic rods, a teaching device mechanism and a screw rod, wherein limiting rods are arranged on the left side and the right side of the fixed rod, a base is arranged on the inner side of each limiting rod, driven rotating rods are connected to the left side and the right side of the lower end of the base in a bearing mode, the middle of the lower end of the base is connected with a movable plate through a spring, connecting rods are welded to the left side and the right side of the movable plate, a tooth block is mounted on the outer side of each connecting rod, a gear is meshed and connected to the outer side of each tooth block, the driven rotating rods are connected to the inner keys of the gears, a limiting plate is fixedly mounted on the outer side of each driven rotating rod, the screw rod is connected to the inner side of the base in a bearing mode, a mounting seat is connected to the outer side of the screw rod in a threaded mode, a bevel gear group is connected to the outer end of the screw rod in a key mode, a driving rotating rod is connected to the rear end of the driving rotating rod, and the output end of a servo motor, the lower extreme welded connection of mount pad has the stopper, and the upside fixed mounting of mount pad has the movable block, the upside laminating of movable block is provided with the fixed block, and fixed block fixed mounting is at the downside of adjusting the seat, the extension rod has all been laminated to the left and right sides of adjusting the seat below, and the extension rod connects the upside at the base, the inside at adjusting the seat middle part is fixed to the manual telescopic link bolt of multisection, and the upper end of multisection manual telescopic link installs the mounting panel, teaching equipment mechanism installs the upside at the mounting panel, and the downside of mounting panel is connected with the fixture block, the adjustment tank has been seted up to the inside of adjusting the seat, and the upside of adjustment tank is connected with the shifting chute, the inside of adjustment tank is provided with the guard plate, the upside of guard plate is connected with the baffle through the damping pivot.
Preferably, the main section of the connecting rod is in an L-shaped structure, the connecting rod is symmetrically arranged about the longitudinal center line of the moving plate, and the moving plate and the base form an elastic structure through a spring.
Preferably, the tooth blocks are distributed at the connecting position of the connecting rod and the gear at equal intervals, and the connecting rod is in sliding connection with the base.
Preferably, the depression section of the limiting plate is of a U-shaped structure, the limiting plate and the base form a rotating mechanism, and the longest distance between the 2 limiting plates is greater than the shortest distance between the 2 limiting rods.
Preferably, adjust the seat and constitute sliding construction from top to bottom through the extension rod with the base, and the length and the width of adjusting the seat all are the same with the length and the width of base.
Preferably, the guard plate includes and dials piece and draw-in groove, and the upside of guard plate is installed and is dialled the piece to the draw-in groove has been seted up to the downside of guard plate, and guard plate and the mutual block of mounting panel are connected simultaneously.
Preferably, the main sections of the fixed block and the moving block are both in a trapezoidal structure, and the opposite surfaces of the fixed block and the moving block are arranged in parallel.
Preferably, the mounting seat forms a left-right sliding structure with the base through a limiting block, and the 2 mounting seats are arranged in parallel.
Compared with the prior art, the invention has the beneficial effects that: the teaching device of the portable information technology is provided with a display,
(1) the movable plate is controlled to move by utilizing the dead lever and the self gravity of the device, the movable plate drives the connecting rod to move, the connecting rod drives the gear to rotate, the limiting plate is driven by the driven rotating rod to rotate, the limiting plate is clamped on the limiting rod along the horizontal direction, the whole device is locked, the use stability of the device is ensured, the whole device can be moved and carried by utilizing the roller only by lifting the whole device out of the dead lever in the later stage of design, and the use convenience of the device is improved;
(2) the protection plate is controlled to move, the protection plate is opened, the teaching equipment mechanism can be stored, the protection plate is closed above the teaching equipment mechanism, the teaching equipment mechanism is protected and stored, the protection plate is subsequently opened, and when the teaching equipment mechanism is moved out, the teaching equipment mechanism is fixedly supported by closing the protection plate, so that the practicability of the device is improved;
(3) the control lead screw rotates, alright drive the mount pad and remove, and the mount pad drives the removal piece and removes, and the movable block drives the fixed block and removes to adjust the high position of adjusting seat, the device is used to the educator comfortable of the different heights of being convenient for.
Drawings
FIG. 1 is a schematic view of the main sectional structure of the present invention;
FIG. 2 is a schematic top view of an adjusting base according to the present invention;
FIG. 3 is a schematic view of a top-down structure of an adjusting base according to the present invention;
FIG. 4 is a schematic view of a base of the present invention in a top-down configuration;
FIG. 5 is a schematic view of a top-down structure of the joint of the base and the movable plate according to the present invention;
FIG. 6 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 7 is an enlarged view of the structure at B in FIG. 1 according to the present invention;
FIG. 8 is a schematic top view of the connection between the fender and the shield according to the present invention.
In the figure: 1. fixing the rod; 2. a limiting rod; 3. a base; 4. moving the plate; 5. a spring; 6. a connecting rod; 7. a tooth block; 8. a gear; 9. a driven rotating rod; 10. a limiting plate; 11. an extension rod; 12. an adjusting seat; 13. a multi-section manual telescopic rod; 14. mounting a plate; 15. a teaching device mechanism; 16. a clamping block; 17. a protection plate; 1701. a shifting block; 1702. a card slot; 18. a moving groove; 19. an adjustment groove; 20. a damping rotating shaft; 21. a fixed block; 22. a moving block; 23. a mounting seat; 24. a limiting block; 25. a screw rod; 26. a set of bevel teeth; 27. driving the rotating rod; 28. a servo motor; 29. and a baffle plate.
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.
Referring to fig. 1-8, the present invention provides a technical solution: a portable teaching device for information technology comprises a fixed rod 1, a limiting rod 2, a base 3, a movable plate 4, a spring 5, a connecting rod 6, a toothed block 7, a gear 8, a driven rotating rod 9, a limiting plate 10, an extension rod 11, an adjusting seat 12, a multi-section manual telescopic rod 13, a mounting plate 14, a teaching device mechanism 15, a clamping block 16, a protective plate 17, a stirring block 1701, a clamping groove 1702, a moving groove 18, an adjusting groove 19, a damping rotating shaft 20, a fixing block 21, a moving block 22, a mounting seat 23, a limiting block 24, a screw rod 25, a bevel gear group 26, a driving rotating rod 27, a servo motor 28 and a baffle 29, wherein the limiting rod 2 is arranged on the left side and the right side of the fixed rod 1, the base 3 is arranged on the inner side of the limiting rod 2, the driven rotating rod 9 is connected to the left side and the right side of the lower end of the base 3 in a bearing mode, the middle of the lower end of the base 3 is connected with the movable plate 4 through the spring 5, the connecting rod 6 is connected to the left side and the right side of the movable plate 4 in a welding mode, and the outside of the connecting rod 6 is provided with a tooth block 7, the outside of the tooth block 7 is engaged with a gear 8, the internal key of the gear 8 is connected with a driven rotating rod 9, the outside of the driven rotating rod 9 is fixedly provided with a limit plate 10, a lead screw 25 is connected inside the base 3 by a bearing, the outside of the lead screw 25 is in threaded connection with an installation seat 23, the outer end key of the lead screw 25 is connected with a conical tooth group 26, the internal key of the conical tooth group 26 is connected with a driving rotating rod 27, the rear end of the driving rotating rod 27 is connected with the output end of a servo motor 28, the lower end of the installation seat 23 is welded with a limit block 24, the upper side of the installation seat 23 is fixedly provided with a moving block 22, the upper side of the moving block 22 is provided with a fixed block 21 in an attaching manner, the fixed block 21 is fixedly arranged at the lower side of the adjusting seat 12, the left side and the right side below the adjusting seat 12 are both attached with extension rods 11, the extension rods 11 are connected at the upper side of the base 3, a multi-section manual telescopic rod 13 is fixed inside the middle part of the adjusting seat 12 by bolts, and the upper end of the multi-section manual telescopic rod 13 is provided with a mounting plate 14, the teaching equipment mechanism 15 is mounted on the upper side of the mounting plate 14, the lower side of the mounting plate 14 is connected with a clamping block 16, an adjusting groove 19 is formed in the adjusting seat 12, the upper side of the adjusting groove 19 is connected with a moving groove 18, a protection plate 17 is arranged in the adjusting groove 19, and the upper side of the protection plate 17 is connected with a baffle plate 29 through a damping rotating shaft 20.
In this example, the main section of the connecting rod 6 is in an L-shaped structure, the connecting rod 6 is symmetrically arranged about the longitudinal center line of the moving plate 4, and the moving plate 4 and the base 3 form an elastic structure through the spring 5, so that the connecting rod 6 and the moving plate 4 can move synchronously, and the moving direction of the moving plate 4 can be flexibly controlled according to requirements;
the tooth blocks 7 are distributed at the connecting position of the connecting rod 6 and the gear 8 at equal intervals, the connecting rod 6 is in sliding connection with the base 3, and the gear 8 can be synchronously driven to rotate when the connecting rod 6 moves, so that the angle of the limiting plate 10 can be adjusted;
the depression section of the limiting plate 10 is of a U-shaped structure, the limiting plate 10 and the base 3 form a rotating mechanism, the longest distance between 2 limiting plates 10 is greater than the shortest distance between 2 limiting rods 2, and the design can limit the whole device by using the limiting plate 10, so that the sliding phenomenon of the device is avoided when the device is used;
the adjusting seat 12 and the base 3 form a vertical sliding structure through the extension rod 11, and the length and the width of the adjusting seat 12 are the same as those of the base 3, so that the adjusting seat 12 can be controlled to stably and vertically move, and the height of the adjusting seat 12 can be adjusted;
the protection plate 17 comprises a dialing block 1701 and a clamping groove 1702, the dialing block 1701 is installed on the upper side of the protection plate 17, the clamping groove 1702 is formed in the lower side of the protection plate 17, and meanwhile the protection plate 17 and the installation plate 14 are connected in a clamping mode, so that the position of the teaching equipment mechanism 15 can be limited and supported, and the teaching equipment mechanism 15 can also be protected;
the main sections of the fixed block 21 and the moving block 22 are both in a trapezoidal structure, and the opposite surfaces of the fixed block 21 and the moving block 22 are arranged in parallel, so that the fixed block 21 and the moving block 22 can be used for controlling the adjusting base 12 to move up and down;
the mount pad 23 passes through stopper 24 and base 3 constitution horizontal slip structure, and 2 mutual parallel arrangement between the mount pad 23, and this design can be spacing to the direction of motion of mount pad 23, guarantees that mount pad 23 is stable along horizontal migration.
The working principle is as follows: when the portable information technology teaching equipment is used, firstly, a user firstly moves the whole device shown in fig. 1 into a working area through a lower roller, lifts the base 3, places the base 3 between 2 limiting rods 2, ensures that the position of the fixed rod 1 corresponds to the position of the movable plate 4, pushes the movable plate 4 to extrude the spring 5 to move, at the moment, the movable plate 4 drives the connecting rods 6 arranged at the left end and the right end to move upwards, the connecting rods 6 drive the gears 8 connected in a meshing way to rotate in combination with fig. 5 and 7, the gears 8 drive the driven rotating rods 9 to rotate, so as to drive the limiting plates 10 to rotate, the limiting plates 10 are clamped on the limiting rods 2 along the horizontal direction, the positioning and locking of the whole device are completed, in combination with fig. 3 and 6, the shifting blocks 1701 to the left and the right and shifting blocks 1701 respectively, the shifting blocks 1701 slide in the moving grooves 18 and drive the protection plates 17 to move, opening 2 protection plates 17 to enable the protection plates 17 to be accommodated in the adjusting grooves 19, pulling up the teaching equipment mechanism 15, enabling the teaching equipment mechanism 15 and the mounting plate 14 to move upwards, pulling the multiple sections of manual telescopic rods 13, moving the teaching equipment mechanism 15 to the upper side of the protection plates 17, then pushing the protection plates 17 reversely, attaching the protection plates 17 to the multiple sections of manual telescopic rods 13, loosening the pulling of the teaching equipment mechanism 15, clamping the clamping blocks 16 at the lower ends of the mounting plates 14 into the clamping grooves 1702, supporting and fixing the teaching equipment mechanism 15, and enabling the whole device to be used as shown in fig. 1;
the teaching equipment mechanism 15 is connected with a multimedia screen of a classroom, the teaching equipment mechanism 15 comprises parts such as a computer, a mouse, a microphone and the like, the parts are all known devices in the market, teaching can be started, if the use comfort level is low, when the height needs to be adjusted, an external power supply of a servo motor 28 shown in figure 4 can be used for controlling the servo motor 28 to rotate forwards, the servo motor 28 drives a driving rotating rod 27 to rotate, the driving rotating rod 27 drives 2 lead screws 25 to rotate reversely through the action of a bevel gear group 26, the lead screws 25 drive an installation seat 23 in threaded connection on the outer side to move, when the installation seat 23 moves, a limiting block 24 arranged at the lower end of the installation seat 23 slides in a base 3 to limit the moving direction of the installation seat 23, the installation seat 23 drives a moving block 22 to move leftwards and rightwards respectively, the moving block 22 pushes a fixed block 21 to move upwards, and balls are uniformly distributed on the contact surface of the moving block 22 and the fixed block 21, the moving friction force between the moving block 22 and the fixed block 21 can be reduced by using balls, the fixed block 21 is smoothly driven to move upwards, the fixed block 21 drives the adjusting seat 12 to move upwards, when the adjusting seat 12 moves upwards, the extension rod 11 arranged on the upper side of the base 3 slides in the adjusting seat 12 to ensure the stable vertical movement of the adjusting seat 12, the position of the adjusting seat 12 is increased, the servo motor 28 is controlled to rotate reversely, the servo motor 28 drives the driving rotating rod 27 to rotate reversely, so that the 2 mounting seats 23 are driven to move relatively under the action of the bevel gear group 26 and the lead screw 25, the mounting seats 23 drive the moving block 22 to move relatively, the pushing of the fixed block 21 is gradually released, the height of the adjusting seat 12 is reduced, the teaching equipment mechanism 15 can be pulled upwards after the use is finished, the clamping between the clamping block 16 and the clamping groove 1702 is released, the dial block 1701 is pushed to drive the protection plate 17 to move into the adjusting groove 19, the teaching equipment mechanism 15 is pressed downwards, the teaching equipment mechanism 15 presses and moves the multiple sections of manual telescopic rods 13 to be stored into the corresponding grooves, the poking block 1701 is pushed reversely, the protection plate 17 is closed, the baffle 29 is rotated by combining with the structure shown in fig. 8, the baffle 29 rotates through the damping rotating shaft 20, the notch of the protection plate 17 is shielded by the baffle 29, and the teaching equipment mechanism 15 is well stored and protected;
when the whole device needs to be updated and maintained, the base 3 can be directly lifted, the pushing of the fixed rod 1 to the movable plate 4 is removed, the spring 5 drives the movable plate 4 to move downwards to reset, the movable plate 4 drives the gear 8 to rotate reversely, the gear 8 drives the limiting plate 10 to rotate reversely through the driven rotating rod 9, the locking of the whole device is removed, the whole device is moved and carried through the pulley, the base 3 and the adjusting seat 12 of the device can be separated, one part of the base can be maintained and replaced, the cost is saved, the working process of the whole device is just the above, and the content which is not described in detail in the specification belongs to the prior art which is well known by professionals in the field.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a portable information technology's teaching equipment, includes dead lever (1), multisection manual telescopic rod (13), teaching equipment mechanism (15) and lead screw (25), its characterized in that: the left side and the right side of the fixed rod (1) are provided with limiting rods (2), the inner sides of the limiting rods (2) are provided with bases (3), the left side and the right side of the lower end of each base (3) are connected with driven rotating rods (9) in a bearing mode, the middle of the lower end of each base (3) is connected with a movable plate (4) through springs (5), the left side and the right side of each movable plate (4) are connected with connecting rods (6) in a welding mode, tooth blocks (7) are installed on the outer sides of the connecting rods (6), gears (8) are meshed and connected with the outer sides of the tooth blocks (7), the driven rotating rods (9) are connected with the inner keys of the gears (8), limiting plates (10) are fixedly installed on the outer sides of the driven rotating rods (9), the screw rods (25) are connected to the inside of the bases (3) in a bearing mode, mounting seats (23) are connected to the outer sides of the screw rods (25) in a threaded mode, and conical tooth groups (26) are connected to the outer ends of the screw rods (25) in a key mode, and the internal key of the bevel gear group (26) is connected with a driving rotating rod (27), the rear end of the driving rotating rod (27) is connected with the output end of a servo motor (28), the lower end of the mounting seat (23) is connected with a limiting block (24) in a welding manner, a moving block (22) is fixedly mounted on the upper side of the mounting seat (23), a fixed block (21) is arranged on the upper side of the moving block (22) in a laminating manner, the fixed block (21) is fixedly mounted on the lower side of the adjusting seat (12), extension rods (11) are respectively bonded on the left side and the right side below the adjusting seat (12), the extension rods (11) are connected on the upper side of the base (3), the multiple sections of manual telescopic rods (13) are fixed inside the middle part of the adjusting seat (12) through bolts, mounting plates (14) are mounted at the upper ends of the multiple sections of the manual telescopic rods (13), and the teaching equipment mechanism (15) is mounted on the upper side of the mounting plates (14), and the downside of mounting panel (14) is connected with fixture block (16), adjustment tank (19) have been seted up to the inside of adjusting seat (12), and the upside of adjustment tank (19) is connected with shifting chute (18), the inside of adjustment tank (19) is provided with guard plate (17), the upside of guard plate (17) is connected with baffle (29) through damping pivot (20), and the position of dead lever (1) corresponds with the position of movable plate (4), and connecting rod (6) drive gear (8) that the meshing is connected and rotate, and gear (8) drive driven bull stick (9) and rotate to drive limiting plate (10) and rotate, block limiting plate (10) on gag lever post (2) along the horizontal direction.
2. A portable information technology teaching device as claimed in claim 1, wherein: the main section of the connecting rod (6) is of an L-shaped structure, the connecting rod (6) is symmetrically arranged relative to the longitudinal central line of the moving plate (4), and the moving plate (4) and the base (3) form an elastic structure through the spring (5).
3. A portable information technology teaching device as claimed in claim 1, wherein: the tooth blocks (7) are distributed at the connecting position of the connecting rod (6) and the gear (8) at equal intervals, and the connecting rod (6) is in sliding connection with the base (3).
4. A portable information technology teaching device as claimed in claim 1, wherein: the depression section of the limiting plate (10) is of a U-shaped structure, the limiting plate (10) and the base (3) form a rotating mechanism, and the longest distance between the 2 limiting plates (10) is larger than the shortest distance between the 2 limiting rods (2).
5. A portable information technology teaching device as claimed in claim 1, wherein: adjust seat (12) and constitute sliding construction from top to bottom through extension rod (11) and base (3), and the length and the width of adjusting seat (12) all are the same with the length and the width of base (3).
6. A portable information technology teaching device as claimed in claim 1, wherein: protection plate (17) are including dialling piece (1701) and draw-in groove (1702), and the upside of protection plate (17) is installed and is dialled piece (1701) to draw-in groove (1702) have been seted up to the downside of protection plate (17), and protection plate (17) and mounting panel (14) block each other are connected simultaneously.
7. A portable information technology teaching device as claimed in claim 1, wherein: the main sections of the fixed block (21) and the moving block (22) are both of a trapezoidal structure, and the opposite surfaces of the fixed block (21) and the moving block (22) are arranged in parallel.
8. A portable information technology teaching device as claimed in claim 1, wherein: the mounting seats (23) and the base (3) form a left-right sliding structure through the limiting blocks (24), and the 2 mounting seats (23) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010500761.9A CN111754821B (en) | 2020-06-04 | 2020-06-04 | Portable information technology's teaching equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010500761.9A CN111754821B (en) | 2020-06-04 | 2020-06-04 | Portable information technology's teaching equipment |
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| Publication Number | Publication Date |
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| CN111754821A CN111754821A (en) | 2020-10-09 |
| CN111754821B true CN111754821B (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010500761.9A Expired - Fee Related CN111754821B (en) | 2020-06-04 | 2020-06-04 | Portable information technology's teaching equipment |
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| CN (1) | CN111754821B (en) |
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| CN210119902U (en) * | 2019-04-19 | 2020-02-28 | 安徽省马鞍山市第七中学 | Experimental power supply convenient to move and adjust for middle school student |
| CN210166978U (en) * | 2019-07-04 | 2020-03-20 | 周学文 | Ideology and politics classroom lecture board |
| CN210428863U (en) * | 2020-01-18 | 2020-04-28 | 赖金明 | Multimedia device for information technology teaching |
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2020
- 2020-06-04 CN CN202010500761.9A patent/CN111754821B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| RO128329A0 (en) * | 2012-01-23 | 2013-04-30 | General Rally Consulting S.R.L. | Controlled skidding simulating mechanism |
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| CN108877396A (en) * | 2018-07-23 | 2018-11-23 | 山东理工职业学院 | A kind of telescopic university student's classroom instruction control explaining device |
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| CN111754821A (en) | 2020-10-09 |
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