CN112721501A - Anti-reflection device for intelligent blackboard - Google Patents

Anti-reflection device for intelligent blackboard Download PDF

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Publication number
CN112721501A
CN112721501A CN202011576050.6A CN202011576050A CN112721501A CN 112721501 A CN112721501 A CN 112721501A CN 202011576050 A CN202011576050 A CN 202011576050A CN 112721501 A CN112721501 A CN 112721501A
Authority
CN
China
Prior art keywords
fixedly connected
sliding
rod
sleeve
bottom plate
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.)
Pending
Application number
CN202011576050.6A
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Chinese (zh)
Inventor
朱玉荣
汤鹏飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Wenxiang Information Technology Co Ltd
Original Assignee
Anhui Wenxiang Information Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Wenxiang Information Technology Co Ltd filed Critical Anhui Wenxiang Information Technology Co Ltd
Priority to CN202011576050.6A priority Critical patent/CN112721501A/en
Publication of CN112721501A publication Critical patent/CN112721501A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04Blackboards
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00Furniture or accessories for furniture, not provided for in other groups of this subclass
    • A47B97/001Wall mounting or suspension arrangements for blackboards or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44Constructional details
    • B65H75/4481Arrangements or adaptations for driving the reel or the material
    • B65H75/4486Electric motors

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  • Drawing Aids And Blackboards (AREA)

Abstract

The invention discloses an anti-reflection device for an intelligent blackboard, and relates to the technical field of intelligent blackboards. The shading device comprises a sliding rail, wherein the upper end of the sliding rail is fixedly connected with a shading assembly, and the sliding rail is connected with a sliding assembly in a sliding manner; the sliding assembly comprises a sliding block connected with the sliding rail in a sliding manner, a lifting plate is fixedly connected above the sliding block, and a rod body is fixedly connected to the lifting plate; the shading assembly comprises a bottom plate, the bottom plate is fixedly connected to the upper end of the sliding rail, a lifting seat is fixedly connected to the upper portion of the bottom plate, a rotating shaft is connected to the lifting seat in a rotating mode, a first gear is fixedly connected to the upper end of the rotating shaft, a reel is fixedly connected to the upper surface of the first gear, shading cloth is wound on the surface of the reel, and one end of the shading cloth is fixedly connected to the rod body. According to the intelligent blackboard, the driving unit drives the sliding assembly to move on the sliding rail, and the shading cloth is driven to shade light, so that the problem that the teaching quality is influenced due to light reflection of the intelligent blackboard is solved.

Description

Anti-reflection device for intelligent blackboard
Technical Field
The invention belongs to the technical field of intelligent blackboards, and particularly relates to an anti-reflection device for an intelligent blackboard.
Background
The intelligent blackboard is a high-tech electronic product replacing a traditional blackboard, integrates a stable and reliable infrared sensing positioning technology, a liquid crystal display screen technology and a computer technology, is different from an electronic whiteboard, integrates a plurality of office equipment functions such as a projector, the electronic whiteboard, a liquid crystal television, a computer and the like, and is added with special writing software, so that the information processing is more convenient, the demonstration is more vivid, the complex installation and debugging are not needed, and the system cost is reduced. Wisdom blackboard and wisdom blackboard eraser obtain extensive application in education and teaching, and most wisdom blackboard on the existing market is fixed on the wall, and is convenient to use, provides a great deal of function for the teaching.
The existing intelligent blackboard is composed of a display board and two writing boards, the display board is installed at the middle position, the two writing boards are respectively positioned at two sides of the display board, but the intelligent blackboard in the prior art has the following defects, for example, because students in a classroom are more, when sitting at the edge for observing the blackboard, the observation is not clear due to the reason of light reflection, the teaching is not changed, the study is also influenced, in order to reduce the influence of light reflection, students often can pull up a curtain, so as to obtain a better visual effect, but the natural light source is wasted to a certain extent by the method. The existing products for eliminating the reflection of the blackboard basically make some improvements on the blackboard, but are not ideal in the effect of eliminating the reflection of the blackboard.
Disclosure of Invention
The invention aims to provide an anti-reflection device for an intelligent blackboard.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an anti-reflection device for an intelligent blackboard, which comprises a slide rail, wherein the upper end of the slide rail is fixedly connected with a shading component; the sliding assembly comprises a sliding block connected with the sliding rail in a sliding mode, a lifting plate is fixedly connected above the sliding block, and a rod body is fixedly connected to the lifting plate; the shading assembly comprises a bottom plate, the bottom plate is fixedly connected to the upper end of the slide rail, a lifting seat is fixedly connected to the upper portion of the bottom plate, a rotating shaft is connected to the lifting seat in a rotating mode, a first gear is fixedly connected to the upper end of the rotating shaft, a reel is fixedly connected to the upper surface of the first gear, shading cloth is wound on the surface of the reel, and one end of the shading cloth is fixedly connected to the rod body.
Furthermore, a loop bar is fixedly connected to the sliding block, and a bar sleeve which is connected with the loop bar in a matched mode is fixedly connected to the lifting plate.
Furthermore, a pair of first fastening bolts is connected to the lifting plate in a threaded manner, the lower ends of the first fastening bolts are rotatably connected to the sliding block, and a sleeve body rotatably connected with the first fastening bolts is arranged on the sliding block.
Further, a pair of columns is fixedly connected to the surface of the rod body, and hanging rings connected with the columns in a matched mode are fixedly connected to the shading cloth.
Furthermore, a threaded sleeve is fixedly connected to the bottom plate, and a threaded rod in threaded connection with the threaded sleeve is fixedly connected to the lower surface of the lifting seat.
Further, the threaded sleeve is fixedly connected with a fixed block, a second fastening bolt is connected to the fixed block in a threaded mode, and the upper end of the second fastening bolt abuts against the lower surface of the lifting seat.
Furthermore, a fixing frame in an inverted U shape is fixedly connected to the bottom plate, a second gear meshed with the first gear is rotatably connected to the upper surface of the fixing frame, a screw sleeve is fixedly connected to the inner portion of the second gear, a screw rod is connected to the screw sleeve in an internal thread mode, the screw rod penetrates through the fixing frame, and a spring is fixedly connected between the lower end of the screw rod and the bottom plate.
Furthermore, a positioning rod is fixedly connected to the upper surface of the fixing frame, a limiting rod is vertically and fixedly connected to the upper end of the screw rod, the limiting rod is vertically and slidably connected with the positioning rod, and a limiting hole slidably connected with the positioning rod is formed in the limiting rod.
Further, slide rail one side fixedly connected with is used for driving the drive assembly that sliding assembly removed, drive assembly include with slide rail parallel arrangement's guide rail, a pair of shrouding of guide rail both ends fixedly connected with, two rotate between the shrouding and be connected with a lead screw, lead screw one end is connected with the motor, motor fixed connection be in on the shrouding, a sliding connection slide on the guide rail, the slide with lead screw threaded connection, the slide with slider fixed connection.
Further, the slide rail is fixedly connected with a mounting plate, and the mounting plate is provided with a mounting hole.
The invention has the following beneficial effects:
1. according to the intelligent blackboard, the device is arranged on the wall surface at one end of the intelligent blackboard, and the driving unit drives the sliding assembly to move on the sliding rail, so that the shading cloth is driven to shade light, and the problem that the teaching quality is influenced due to light reflection of the intelligent blackboard is solved.
2. According to the invention, the spring is fixedly connected between the screw rod and the bottom plate, the screw rod is pulled to move downwards by the pulling force of the spring, the first gear and the second gear are driven to rotate, and the scroll is driven to rotate, so that the shading cloth can be automatically recovered.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the sliding assembly;
FIG. 3 is a schematic view of a light shield assembly;
FIG. 4 is a schematic front view of FIG. 3;
in the drawings, the components represented by the respective reference numerals are listed below:
1-slide rail, 2-slide component, 201-slide block, 202-lifting plate, 203-rod body, 204-sleeve rod, 205-rod sleeve, 206-first fastening bolt, 207-sleeve body, 208-column body, 3-shading component, 301-bottom plate, 302-scroll, 303-thread sleeve, 304-lifting seat, 305-first gear, 306-fixed block, 307-second fastening bolt, 308-threaded rod, 309-rotating shaft, 310-fixed frame, 311-second gear, 312-screw rod, 313-limit rod, 314-positioning rod, 315-spring, 316-screw rod sleeve, 4-shading cloth, 5-drive component, 501-guide rail, 502-screw rod, 503-slide seat, 504-motor, 505-closure 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.
In the description of the present invention, it is to be understood that the terms "one end," "upper," "lower," "one side," "top," "middle," "length," "inner," "four sides," and the like are used in an orientation or positional relationship merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting the invention.
Referring to fig. 1-4, the invention is an anti-reflection device for an intelligent blackboard, comprising a slide rail 1, wherein the slide rail 1 is vertically installed on a wall surface at one end of the intelligent blackboard, the upper end of the slide rail 1 is fixedly connected with a shading component 3, and the slide rail 1 is slidably connected with a sliding component 2; the sliding assembly 2 comprises a sliding block 201 connected with the sliding rail 1 in a sliding manner, a lifting plate 202 is fixedly connected above the sliding block 201, and a rod body 203 is fixedly connected on the lifting plate 202; the shading component 3 comprises a bottom plate 301, the bottom plate 301 is fixedly connected to the upper end of the sliding rail 1, a lifting seat 304 is fixedly connected to the upper portion of the bottom plate 301, a rotating shaft 309 is rotatably connected to the lifting seat 304, a first gear 305 is fixedly connected to the upper end of the rotating shaft 309, a reel 302 is fixedly connected to the upper surface of the first gear 305, the reel 302 drives the first gear 305 and the rotating shaft 309 to rotate when rotating, a shading cloth 4 is wound on the surface of the reel 302, and one end of the shading cloth 4 is fixedly connected to the rod body 203.
Preferably, a loop bar 204 is fixedly connected to the sliding block 201, and a bar sleeve 205 which is connected with the loop bar 204 in a matching manner is fixedly connected to the lifting plate 202.
Preferably, a pair of first fastening bolts 206 are connected to the lifting plate 202 in a threaded manner, the lower ends of the first fastening bolts 206 are rotatably connected to the sliding block 201, a sleeve body 207 rotatably connected to the first fastening bolts 206 is arranged on the sliding block 201, and the height of the lifting plate 202 can be adjusted by adjusting the first fastening bolts 206, so that the shading position of the shading cloth can be adjusted.
Preferably, the surface of the rod body 203 is fixedly connected with a pair of columns 208, and the shading cloth 4 is fixedly connected with a hanging ring which is matched and connected with the columns 208.
Preferably, a threaded sleeve 303 is fixedly connected to the bottom plate 301, and a threaded rod 308 in threaded connection with the threaded sleeve 303 is fixedly connected to the lower surface of the lifting seat 304.
Preferably, a fixed block 306 is fixedly connected to the surface of the threaded sleeve 303, a second fastening bolt 307 is threadedly connected to the fixed block 306, and the upper end of the second fastening bolt 307 abuts against the lower surface of the lifting base 304, so as to prevent the reel 302 from driving the lifting base 304 to rotate when rotating.
Preferably, an inverted U-shaped fixing frame 310 is fixedly connected to the bottom plate 301, a second gear 311 engaged with the first gear 305 is rotatably connected to the upper surface of the fixing frame 310, a screw sleeve 316 is fixedly connected to the inside of the second gear 311, a screw 312 is connected to the screw sleeve 316 through an internal thread, the screw 312 penetrates through the fixing frame 310, a spring 315 is fixedly connected between the lower end of the screw 312 and the bottom plate 301, and the spring 315 is in a stretching state.
Preferably, the upper surface of the fixing frame 310 is fixedly connected with a positioning rod 314, the upper end of the screw 312 is vertically and fixedly connected with a limiting rod 313, the limiting rod 313 is connected with the positioning rod 314 in a vertical sliding manner, a limiting hole connected with the positioning rod 314 in a sliding manner is formed in the limiting rod 313, the reel 302 rotates to drive the first gear 305 to rotate, and the first gear 305 drives the second gear 311 to rotate, so that the threaded rod 312 is driven to move up and down.
Preferably, slide rail 1 one side fixedly connected with is used for driving drive assembly 5 that sliding assembly 2 removed, drive assembly 5 includes guide rail 501 with 1 parallel arrangement of slide rail, a pair of shrouding 505 of guide rail 501 both ends fixedly connected with, it is connected with a lead screw 502 to rotate between two shrouding 505, lead screw 502 one end is connected with motor 504, motor 504 fixed connection is on shrouding 505, a sliding connection slide 503 on guide rail 501, slide 503 and lead screw 502 threaded connection, slide 503 and slider 201 fixed connection, motor 504 drives lead screw 502 and rotates, it removes to drive slide 503, slide 503 drives slider 201 and removes, thereby give and drive sliding assembly 2 and remove.
Preferably, a mounting plate 101 is fixedly connected to the slide rail 1, and a mounting hole 102 is formed in the mounting plate 101.
One specific application of this embodiment is: when the intelligent blackboard is used, the device is installed on a wall surface at one end of the intelligent blackboard, when the intelligent blackboard needs to be shielded from light, the motor 504 drives the sliding component 2 to move downwards to drive the shading cloth 4 to shade light, meanwhile, the shading cloth 4 drives the scroll 302 to rotate, the scroll 302 drives the first gear 305 to rotate, the first gear 305 drives the second gear 311 to rotate, and therefore the screw 312 is driven to move in a direction away from the bottom plate 301, and the tension of the spring 315 is increased; when the shading cloth 4 needs to be recovered, the motor 504 drives the sliding assembly 2 to slide upwards, the spring 315 pulls the screw 312 to move towards the direction close to the bottom plate 301, the screw 312 drives the second gear 311 to rotate, the second gear 311 drives the first gear 305 to rotate, so as to drive the scroll 302 to rotate, and the shading cloth 4 is automatically recovered.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The utility model provides a prevent anti-light device for wisdom blackboard which characterized in that: the shading device comprises a sliding rail (1), wherein the upper end of the sliding rail (1) is fixedly connected with a shading component (3), and the sliding rail (1) is connected with a sliding component (2) in a sliding manner;
the sliding assembly (2) comprises a sliding block (201) connected with the sliding rail (1) in a sliding mode, a lifting plate (202) is fixedly connected above the sliding block (201), and a rod body (203) is fixedly connected to the lifting plate (202);
shading subassembly (3) are including a bottom plate (301), bottom plate (301) fixed connection be in slide rail (1) upper end, a bottom plate (301) top fixed connection lift seat (304), it is connected with a pivot (309) to rotate on lift seat (304), pivot (309) upper end fixedly connected with first gear (305), a fixed surface connects spool (302) on first gear (305), spool (302) surface is equipped with the winding and has shading cloth (4), the one end fixed connection of shading cloth (4) is in on the body of rod (203).
2. The apparatus of claim 1, wherein a sleeve rod (204) is fixedly connected to the sliding block (201), and a rod sleeve (205) is fixedly connected to the lifting plate (202) and is engaged with the sleeve rod (204).
3. The apparatus of claim 1 or 2, wherein a pair of first fastening bolts (206) are threadedly connected to the lifting plate (202), the lower ends of the first fastening bolts (206) are rotatably connected to the sliding block (201), and a sleeve body (207) rotatably connected to the first fastening bolts (206) is disposed on the sliding block (201).
4. The apparatus of claim 3, wherein a pair of posts (208) is fixedly connected to the surface of the rod (203), and a hanging ring is fixedly connected to the shade cloth (4) and is engaged with the posts (208).
5. The apparatus of claim 1 or 4, wherein a screw sleeve (303) is fixedly connected to the bottom plate (301), and a threaded rod (308) is fixedly connected to the lower surface of the lifting base (304) and is in threaded connection with the screw sleeve (303).
6. The anti-reflection device for the intelligent blackboard according to claim 5, wherein the threaded sleeve (303) is fixedly connected with a fixed block (306) on the surface, a second fastening bolt (307) is connected with the fixed block (306) in a threaded manner, and the upper end of the second fastening bolt (307) abuts against the lower surface of the lifting seat (304).
7. The apparatus of claim 1, 4 or 6, wherein the bottom plate (301) is fixedly connected with an inverted U-shaped fixing frame (310), the upper surface of the fixing frame (310) is rotatably connected with a second gear (311) engaged with the first gear (305), the second gear (311) is internally and fixedly connected with a screw sleeve (316), the screw sleeve (316) is internally and fixedly connected with a screw rod (312), the screw rod (312) penetrates through the fixing frame (310), and a spring (315) is fixedly connected between the lower end of the screw rod (312) and the bottom plate (301).
8. The anti-reflection device for the intelligent blackboard according to claim 7, wherein a positioning rod (314) is fixedly connected to the upper surface of the fixing frame (310), a limiting rod (313) is vertically and fixedly connected to the upper end of the screw (312), the limiting rod (313) is vertically and slidably connected to the positioning rod (314), and a limiting hole slidably connected to the positioning rod (314) is formed in the limiting rod (313).
9. The utility model provides an anti-reflection device for wisdom blackboard according to claim 1 or 4 or 6 or 8, characterized in that, slide rail (1) one side fixedly connected with be used for driving drive assembly (5) that slide assembly (2) removed, drive assembly (5) include with slide rail (1) parallel arrangement's guide rail (501), a pair of shrouding (505) of guide rail (501) both ends fixedly connected with, two it is connected with a lead screw (502) to rotate between shrouding (505), lead screw (502) one end is connected with motor (504), motor (504) fixed connection be in on shrouding (505), a sliding connection slide (503) on guide rail (501), slide (503) with lead screw (502) threaded connection, slide (503) with slider (201) fixed connection.
10. The apparatus of claim 9, wherein the slide rail (1) is fixedly connected with a mounting plate (101), and the mounting plate (101) is provided with a mounting hole (102).
CN202011576050.6A 2020-12-28 2020-12-28 Anti-reflection device for intelligent blackboard Pending CN112721501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011576050.6A CN112721501A (en) 2020-12-28 2020-12-28 Anti-reflection device for intelligent blackboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011576050.6A CN112721501A (en) 2020-12-28 2020-12-28 Anti-reflection device for intelligent blackboard

Publications (1)

Publication Number Publication Date
CN112721501A true CN112721501A (en) 2021-04-30

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Application Number Title Priority Date Filing Date
CN202011576050.6A Pending CN112721501A (en) 2020-12-28 2020-12-28 Anti-reflection device for intelligent blackboard

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202669298U (en) * 2012-08-08 2013-01-16 黑龙江工程学院 Multifunctional blackboard applicable to teaching of literature and history teachers
CN203603744U (en) * 2013-11-25 2014-05-21 王学鹏 Curtain
CN204955836U (en) * 2015-07-31 2016-01-13 何纪江 Anti -reflective height -adjustable blackboard
CN206201764U (en) * 2016-07-21 2017-05-31 长春师范大学 A kind of blackboard for education with roller blind device is shunk and its classroom
CN108674062A (en) * 2018-05-02 2018-10-19 宋明刚 A kind of reflection prevention blackboard
CN208014210U (en) * 2017-12-01 2018-10-26 杨凌职业技术学院 A kind of water conservancy cost instructional device
CN109267922A (en) * 2018-09-07 2019-01-25 广州爱易学智能信息科技有限公司 A kind of intelligent curtain of anti-blackboard reflective light
CN210924973U (en) * 2019-11-29 2020-07-03 乔涵涵 Teaching device for teaching principle of education
CN111497495A (en) * 2019-01-31 2020-08-07 重庆市嘉柏园教育科技有限公司 Teaching aid convenient to accomodate
CN112089240A (en) * 2020-09-16 2020-12-18 安徽文香信息技术有限公司 A supplementary elevating gear for installation of wisdom blackboard

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202669298U (en) * 2012-08-08 2013-01-16 黑龙江工程学院 Multifunctional blackboard applicable to teaching of literature and history teachers
CN203603744U (en) * 2013-11-25 2014-05-21 王学鹏 Curtain
CN204955836U (en) * 2015-07-31 2016-01-13 何纪江 Anti -reflective height -adjustable blackboard
CN206201764U (en) * 2016-07-21 2017-05-31 长春师范大学 A kind of blackboard for education with roller blind device is shunk and its classroom
CN208014210U (en) * 2017-12-01 2018-10-26 杨凌职业技术学院 A kind of water conservancy cost instructional device
CN108674062A (en) * 2018-05-02 2018-10-19 宋明刚 A kind of reflection prevention blackboard
CN109267922A (en) * 2018-09-07 2019-01-25 广州爱易学智能信息科技有限公司 A kind of intelligent curtain of anti-blackboard reflective light
CN111497495A (en) * 2019-01-31 2020-08-07 重庆市嘉柏园教育科技有限公司 Teaching aid convenient to accomodate
CN210924973U (en) * 2019-11-29 2020-07-03 乔涵涵 Teaching device for teaching principle of education
CN112089240A (en) * 2020-09-16 2020-12-18 安徽文香信息技术有限公司 A supplementary elevating gear for installation of wisdom blackboard

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