CN110748765B - Dustproof height-adjustable's projecting apparatus - Google Patents
Dustproof height-adjustable's projecting apparatus Download PDFInfo
- Publication number
- CN110748765B CN110748765B CN201911012600.9A CN201911012600A CN110748765B CN 110748765 B CN110748765 B CN 110748765B CN 201911012600 A CN201911012600 A CN 201911012600A CN 110748765 B CN110748765 B CN 110748765B
- Authority
- CN
- China
- Prior art keywords
- bevel gear
- top plate
- projector
- bottom plate
- dustproof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
-
- 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
-
- 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
Abstract
The invention relates to the technical field of multimedia, and discloses a dustproof height-adjustable projector which comprises a top plate, wherein a side plate is arranged on the lower surface of the top plate, a driving motor is arranged in the middle of the top plate, an output shaft of the driving motor is fixedly connected with a first belt wheel, the first belt wheel is connected with a second belt wheel through a belt, the second belt wheel is fixedly connected with the middle of a main shaft, a third bevel gear is arranged at the left end of the main shaft, the third bevel gear is meshed with a fourth bevel gear, the fourth bevel gear is fixedly connected with the end part of a rotating shaft, winding wheels are arranged on the front side and the rear side of the rotating shaft, a lifting rope is arranged outside the winding wheels, the lower end of the lifting rope is connected with the left side of a bottom plate, and a projector is arranged on the upper part of the bottom plate. The dustproof height-adjustable projector is suitable for a dustproof height-adjustable projector, and due to the fact that the side plates and the bottom plate are arranged, when the bottom plate drives the projector to move upwards, the projector can be completely sealed through the side plates, the bottom plate and the top plate, and it is guaranteed that external dust cannot affect the normal use of the projector.
Description
Technical Field
The invention relates to the technical field of multimedia, in particular to a dustproof height-adjustable projector.
Background
The multimedia teaching is that in the teaching process, according to the characteristics of a teaching target and a teaching object, modern teaching media are reasonably selected and applied through teaching design, and are organically combined with the traditional teaching means to jointly participate in the whole teaching process, and various media information acts on students to form a reasonable teaching process structure so as to achieve the optimized teaching effect. The multimedia is an indispensable equipment concept for modern education technology education of computers, projectors, slide projectors, display stands, videos, broadcasts, films, electronic whiteboards, computers and the like, and the theory and practice of teaching modernization are realized by applying modern education theory and technology and through the design, development, application, management and evaluation of teaching processes and resources.
Generally, in the multimedia teaching process, a projector, a lens such as the projector and the like belong to compact devices, and when dust enters the devices, sound boxes are formed on the image of the lens, so that the device needs to be improved.
Chinese patent (publication number: CN 205080357U) discloses a dustproof height-adjustable projector, which belongs to the technical field of teaching office equipment, and comprises a driving motor support, a driving motor, a transmission chain, a crank and rocker mechanism and a projector upper clamping plate; driving motor passes through driving motor support and installs on the ceiling, driving motor links to each other with the driving chain, the driving chain links to each other with crank rocker mechanism, crank rocker mechanism and projecting apparatus punch holder, the projecting apparatus lower plate links to each other, the projecting apparatus punch holder is articulated with the furred ceiling device, the furred ceiling device is fixed in on the ceiling, be provided with the projecting apparatus cabin between projecting apparatus punch holder and the projecting apparatus lower plate, the projecting apparatus cabin includes the control chamber, the door-hinge, the automatically-controlled door, the walk-line hole, set up the control chamber in the projecting apparatus cabin, projecting apparatus cabin facial make-up automatically-controlled door, the automatically-controlled door passes through the door-hinge and links to each other with the projecting apparatus cabin, the device's overall structure is comparatively complicated, the reliability is lower, and not totally enclosed with the projecting apparatus, still have the dust to get into, consequently, need improve the device.
Disclosure of Invention
The invention provides a dustproof height-adjustable projector, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a dustproof height-adjustable projector comprises a top plate, wherein a side plate is arranged on the lower surface of the top plate, a driving motor is arranged in the middle of the top plate, an output shaft of the driving motor is fixedly connected with a first belt wheel, the first belt wheel is connected with a second belt wheel through a belt, the second belt wheel is fixedly connected with the middle of a main shaft, a third bevel gear is arranged at the left end of the main shaft, the third bevel gear is meshed with a fourth bevel gear, the fourth bevel gear is fixedly connected with the end part of a rotating shaft, winding wheels are arranged on the front side and the rear side of the rotating shaft, a lifting rope is arranged outside the winding wheels, the lower end of the lifting rope is connected with the left side of a bottom plate, a projector is arranged on the upper part of the bottom plate, the right end of the main shaft is fixedly connected with the first bevel gear, the first bevel gear is meshed with a second bevel gear, the second bevel gear is fixedly connected with the front end part of a lead screw, the front side and the rear side of the lead screw are connected with a first slide block through threads, the lower end of the first slide block is hinged with a first support rod, the lower end of the first support rod is hinged with a second support rod, the lower end of the second supporting rod is hinged to the upper portion of the second sliding block, and the second sliding block is connected to the right side of the bottom plate in a sliding mode.
As a preferable technical scheme of the invention, the right sides of the top plate and the bottom plate are both provided with sliding grooves, the upper sliding groove is connected with the first sliding block in a sliding manner, and the lower sliding groove is connected with the second sliding block in a sliding manner.
As a preferred technical scheme of the invention, a first fixed seat is arranged on the right side of the top plate and is rotatably connected with two ends of the screw rod.
As a preferable technical scheme of the invention, the front side and the rear side of the screw rod are provided with threads with opposite screwing directions.
As a preferable technical scheme of the invention, the front surface of the top plate is provided with a second fixed seat, and the second fixed seat is rotatably connected with two sides of the main shaft.
As a preferred technical scheme of the invention, a third fixed seat is arranged on the left side of the top plate and is rotatably connected with two ends of the rotating shaft.
As a preferable technical scheme of the invention, the left side of the top plate is provided with an abdicating groove which is connected with a lifting rope in a penetrating way.
As a preferred technical scheme of the invention, the front side and the rear side of the bottom plate are provided with telescopic rods, and the upper ends of the telescopic rods are connected with the top plate.
The invention has the following advantages:
the dustproof height-adjustable projector is suitable for a dustproof height-adjustable projector, because the device is provided with the side plates and the bottom plate, when the bottom plate drives the projector to move upwards, the projector can be completely sealed through the side plates, the bottom plate and the top plate, so that the normal use of the projector is ensured not to be influenced by external dust.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dustproof height-adjustable projector.
Fig. 2 is a front view of a dustproof height-adjustable projector.
Fig. 3 is a top view of a dustproof adjustable height projector.
Fig. 4 is a perspective view of a dustproof height-adjustable projector with a side plate.
In the figure: 1. a base plate; 2. a lifting rope; 3. a projector; 4. a telescopic rod; 5. a chute; 6. a second slider; 7. a second support bar; 8. a first support bar; 9. a top plate; 10. a first fixed seat; 11. a second bevel gear; 12. a first bevel gear; 13. a screw rod; 14. a first slider; 15. a yielding groove; 16. a winding wheel; 17. a rotating shaft; 18. a fourth bevel gear; 19. a third bevel gear; 20. a main shaft; 21. a second fixed seat; 22. a drive motor; 23. a first pulley; 24. a belt; 25. a second pulley; 26. a third fixed seat; 27. side plates.
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.
Example one
Referring to fig. 1-4, a dustproof height-adjustable projector includes a top plate 9, a side plate 27 is disposed on a lower surface of the top plate 9, a driving motor 22 is disposed in a middle portion of the top plate 9, an output shaft of the driving motor 22 is fixedly connected to a first belt pulley 23, the first belt pulley 23 is connected to a second belt pulley 25 through a belt 24, the second belt pulley 25 is fixedly connected to a middle portion of a main shaft 20, a second fixing seat 21 is disposed on a front surface of the top plate 9, the second fixing seat 21 is rotatably connected to both sides of the main shaft 20, a third bevel gear 19 is disposed at a left end of the main shaft 20, the third bevel gear 19 is engaged with a fourth bevel gear 18, the fourth bevel gear 18 is fixedly connected to an end portion of a rotating shaft 17, a third fixing seat 26 is disposed at a left side of the top plate 9, the third fixing seat 26 is rotatably connected to both ends of the rotating shaft 17, winding wheels 16 are disposed at front and rear sides of the rotating shaft 17, a lifting rope 2 is disposed outside the winding wheels 16, a yielding groove 15 is disposed at a left side of the top plate 9, the abdicating groove 15 is connected with the lifting rope 2 in a penetrating way, the lower end of the lifting rope 2 is connected with the left side of the bottom plate 1, and the upper part of the bottom plate 1 is provided with the projector 3.
The right end of the main shaft 20 is fixedly connected with a first bevel gear 12, the first bevel gear 12 is meshed with a second bevel gear 11, the second bevel gear 11 is fixedly connected with the front end of a screw rod 13, a first fixing seat 10 is arranged on the right side of the top plate 9, the first fixing seat 10 is rotatably connected with two ends of the screw rod 13, the front side and the rear side of the screw rod 13 are in threaded connection with a first sliding block 14, threads with opposite rotation directions are arranged on the front side and the rear side of the screw rod 13, the lower end of the first sliding block 14 is hinged with a first supporting rod 8, the lower end of the first supporting rod 8 is hinged with a second supporting rod 7, the lower end of the second supporting rod 7 is hinged with the upper portion of a second sliding block 6, the second sliding block 6 is slidably connected with the right side of the bottom plate 1, sliding grooves 5 are arranged on the right sides of the top plate 9 and the bottom plate 1, the sliding grooves 5 are slidably connected with the first sliding blocks 14, and the lower portion of the sliding grooves 5 is slidably connected with the second sliding blocks 6.
Example two
Referring to fig. 1, the other contents of the present embodiment are the same as those of the first embodiment, except that: the front side and the rear side of the bottom plate 1 are provided with telescopic rods 4, and the upper ends of the telescopic rods 4 are connected with a top plate 9. In order to ensure that the bottom plate 1 is smoother in the descending process, the telescopic rod 4 is arranged between the top plate 9 and the bottom plate 1 and plays a role in guiding through the telescopic rod 4, so that the bottom plate 1 is more stable in the descending process.
In the implementation process of the invention, when a projector 3 needs to be used, a driving motor 22 is started, the driving motor 22 drives a main shaft 20 to rotate through belt transmission, the main shaft 20 drives a first bevel gear 12 and a third bevel gear 19 on two sides to rotate, the first bevel gear 12 drives a second bevel gear 11 in meshed connection with the first bevel gear to rotate, so that a screw rod 13 rotates, and because threads with opposite rotation directions are arranged on two sides of the screw rod 13, two first sliding blocks 14 on the front side and the rear side move close to each other in the rotating process of the screw rod 13, so that the second sliding blocks 6 move downwards in the process of moving close to each other through the linkage action of a first supporting rod 8 and a second supporting rod 7, so that a bottom plate 1 moves downwards, the bottom plate 1 drives the projector 3 to move downwards together, and meanwhile, the third bevel gear 19 drives a fourth bevel gear 18 in meshed connection with the third bevel gear to rotate, therefore, the rotating shaft 17 rotates, the rotating shaft 17 drives the winding wheel 16 to rotate, the winding wheel 16 gradually releases the lifting rope 2, the lifting rope 2 on the left side of the bottom plate 1 gradually extends, the bottom plate 1 descends, the lifting devices are arranged on the left side and the right side of the bottom plate 1, the bottom plate 1 can be kept stable and cannot swing left and right in the descending process, meanwhile, the descending height of the bottom plate 1 can be freely adjusted, when the projector 3 is not used, the driving motor 22 can be reversely started, the bottom plate 1 moves upwards, the bottom plate 1 drives the projector 3 to move downwards, when the bottom plate 1 moves to the lowest end of the side plate 27, the bottom plate 1, the side plate 27 and the top plate 9 completely seal the projector 3, at the moment, external dust cannot enter the projector 3, and normal use of the projector 3 is effectively protected; the invention is suitable for a dustproof height-adjustable projector, because the device is provided with the side plate 27 and the bottom plate 1, after the bottom plate 1 drives the projector 3 to move upwards, the projector 3 can be completely sealed through the side plate 27, the bottom plate 1 and the top plate 9, the normal use of the projector 3 is ensured not to be influenced by external dust, and the device only adopts a motor to drive the bottom plate 1 to move up and down, so the device has simple structure, more stable lifting device, better reliability and longer service life.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A dustproof height-adjustable projector comprises a top plate (9), wherein a side plate (27) is arranged on the lower surface of the top plate (9), a driving motor (22) is arranged in the middle of the top plate (9), and is characterized in that an output shaft of the driving motor (22) is fixedly connected with a first belt wheel (23), the first belt wheel (23) is connected with a second belt wheel (25) through a belt (24), the second belt wheel (25) is fixedly connected with the middle of a main shaft (20), a third bevel gear (19) is arranged at the left end of the main shaft (20), the third bevel gear (19) is meshed with a fourth bevel gear (18), the fourth bevel gear (18) is fixedly connected with the end part of a rotating shaft (17), winding wheels (16) are arranged on the front side and the rear side of the rotating shaft (17), a lifting rope (2) is arranged outside the winding wheels (16), the lower end of the lifting rope (2) is connected with the left side of a bottom plate (1), a projector (3) is arranged on the upper part of the bottom plate (1), the right-hand member fixed connection first bevel gear (12) of main shaft (20), first bevel gear (12) meshing connection second bevel gear (11), the positive tip of second bevel gear (11) fixed connection lead screw (13), both sides threaded connection first slider (14) around lead screw (13), first slider (14) lower extreme is articulated first bracing piece (8), the lower extreme of first bracing piece (8) articulates second bracing piece (7), the lower extreme of second bracing piece (7) articulates second slider (6) upper portion, the right side of second slider (6) sliding connection bottom plate (1).
2. The projector with adjustable height and dustproof function as claimed in claim 1, wherein the top plate (9) and the bottom plate (1) are provided with sliding grooves (5) on the right sides, the upper sliding groove (5) is slidably connected with the first sliding block (14), and the lower sliding groove (5) is slidably connected with the second sliding block (6).
3. The dustproof height-adjustable projector according to claim 1, wherein a first fixing seat (10) is arranged on the right side of the top plate (9), and the first fixing seat (10) is rotatably connected with two ends of the screw rod (13).
4. A dustproof height-adjustable projector according to claim 1 or 3, wherein the screw rod (13) is provided with threads with opposite rotation directions at the front side and the rear side.
5. A dustproof height-adjustable projector according to claim 1, wherein the front surface of the top plate (9) is provided with a second fixed seat (21), and the second fixed seat (21) is rotatably connected with two sides of the main shaft (20).
6. The dustproof height-adjustable projector according to claim 1, wherein a third fixing seat (26) is arranged on the left side of the top plate (9), and the third fixing seat (26) is rotatably connected with two ends of the rotating shaft (17).
7. The projector with the dustproof and adjustable height as claimed in claim 1, wherein the left side of the top plate (9) is provided with an abdicating groove (15), and the abdicating groove (15) is connected with the lifting rope (2) in a penetrating way.
8. The dustproof height-adjustable projector according to claim 1, wherein the front side and the rear side of the bottom plate (1) are provided with telescopic rods (4), and the upper ends of the telescopic rods (4) are connected with the top plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012600.9A CN110748765B (en) | 2019-10-23 | 2019-10-23 | Dustproof height-adjustable's projecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911012600.9A CN110748765B (en) | 2019-10-23 | 2019-10-23 | Dustproof height-adjustable's projecting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110748765A CN110748765A (en) | 2020-02-04 |
| CN110748765B true CN110748765B (en) | 2021-09-17 |
Family
ID=69279533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911012600.9A Active CN110748765B (en) | 2019-10-23 | 2019-10-23 | Dustproof height-adjustable's projecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110748765B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606443A (en) * | 2021-08-09 | 2021-11-05 | 马增斌 | Convenient to use's suspension type optical projection governing system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201594168U (en) * | 2009-12-03 | 2010-09-29 | 陈国华 | Automatic lifting device for projector |
| CN103343864A (en) * | 2013-06-13 | 2013-10-09 | 张家港市莱特影视器材有限公司 | Projector power-driven lifting frame |
| CN206478424U (en) * | 2017-01-09 | 2017-09-08 | 宝鸡职业技术学院 | Adjustable projector hanger bracket |
| CN109736626A (en) * | 2019-01-05 | 2019-05-10 | 青岛中海能电力科技有限公司 | A kind of electric power tower of adjustable height and angle |
| CN109737293A (en) * | 2018-12-30 | 2019-05-10 | 广州天聪自动化设备有限公司 | A kind of friendship scissors automatic lifting hanger |
| CN209196492U (en) * | 2018-10-10 | 2019-08-02 | 张兴龙 | A kind of mathematical education fixes device with projector |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3672222B2 (en) * | 1998-12-25 | 2005-07-20 | 東芝セラミックス株式会社 | Magnet lifting mechanism of single crystal pulling device |
| CN102287605B (en) * | 2011-07-22 | 2013-10-02 | 上海超创广告有限公司 | Automatic lifting equipment |
| CN202486492U (en) * | 2011-11-04 | 2012-10-10 | 广州美视晶莹银幕有限公司 | Electric projector suspension bracket |
| CN206072698U (en) * | 2016-08-24 | 2017-04-05 | 武汉思迈展览有限公司 | A kind of projector suspension bracket |
| CN206479757U (en) * | 2016-12-31 | 2017-09-08 | 广东东软学院 | A kind of projecting apparatus with concealed structure |
| CN208218307U (en) * | 2018-04-11 | 2018-12-11 | 河源市鑫达科技有限公司 | A kind of chain-type lifting device |
| CN109394143A (en) * | 2018-12-14 | 2019-03-01 | 佛山市顺德区美的洗涤电器制造有限公司 | Lifting device and household electrical appliance |
-
2019
- 2019-10-23 CN CN201911012600.9A patent/CN110748765B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201594168U (en) * | 2009-12-03 | 2010-09-29 | 陈国华 | Automatic lifting device for projector |
| CN103343864A (en) * | 2013-06-13 | 2013-10-09 | 张家港市莱特影视器材有限公司 | Projector power-driven lifting frame |
| CN206478424U (en) * | 2017-01-09 | 2017-09-08 | 宝鸡职业技术学院 | Adjustable projector hanger bracket |
| CN209196492U (en) * | 2018-10-10 | 2019-08-02 | 张兴龙 | A kind of mathematical education fixes device with projector |
| CN109737293A (en) * | 2018-12-30 | 2019-05-10 | 广州天聪自动化设备有限公司 | A kind of friendship scissors automatic lifting hanger |
| CN109736626A (en) * | 2019-01-05 | 2019-05-10 | 青岛中海能电力科技有限公司 | A kind of electric power tower of adjustable height and angle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110748765A (en) | 2020-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206460636U (en) | A kind of new literature aided education exhibiting device | |
| CN204440676U (en) | A kind of Mobile multimedia instructional device | |
| CN110748765B (en) | Dustproof height-adjustable's projecting apparatus | |
| CN111678019A (en) | A multimode english teaching device for english teaching | |
| CN209351130U (en) | A kind of multi-functional blackboard | |
| CN211581982U (en) | Network-based multimedia platform for teaching | |
| CN211207544U (en) | Electronic information teaching display device | |
| CN211372153U (en) | Stage illumination is with light conversion equipment | |
| CN210895884U (en) | Digital education and teaching device | |
| CN209540353U (en) | A kind of Intellectualized Video Monitoring device | |
| CN209373831U (en) | A kind of children, which train, uses Multifunctional teaching device | |
| CN214012266U (en) | Display panel used for electronic information teaching and convenient to store | |
| CN210930185U (en) | Multimedia guiding device for ideological and political education | |
| CN213487587U (en) | Interactive remote teaching platform | |
| CN212178469U (en) | Paperless video expansion device | |
| CN210729316U (en) | Coating dispersion equipment with dispersion protrusions | |
| CN207664522U (en) | A kind of cable is twisted equipment | |
| CN112652196A (en) | AI education method for smart education campus | |
| CN213365818U (en) | Computer network engineering development display device | |
| CN109830133A (en) | A kind of multi-modal English teaching device of English teaching | |
| CN205584397U (en) | Three -dimensional video monitoring device of multi -media | |
| CN214368941U (en) | Large-screen digital display with adjustable direction | |
| CN220234757U (en) | Prompter device | |
| CN212649592U (en) | Interactive all-in-one machine for teleconference | |
| CN212584599U (en) | Electric opening-closing type LED display screen mounting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210830 Address after: 252000 floor 1 and 2, No. B17, No. B18 and No. B14, phase II, intelligent equipment Industrial Park, south of Ganjiang street, Jiuzhou street, high tech Zone, Liaocheng City, Shandong Province Applicant after: Shandong Hengye Sijin Technology Co.,Ltd. Address before: 322000 Zhichuang Park, 91 Chaoyang East Road, Fotang Town, Yiwu City, Jinhua City, Zhejiang Province Applicant before: ZHEJIANG GENGTU ELECTRONIC COMMERCE Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |