CN108591727A - A kind of educational projector frame that stability is good - Google Patents
A kind of educational projector frame that stability is good Download PDFInfo
- Publication number
- CN108591727A CN108591727A CN201810617826.0A CN201810617826A CN108591727A CN 108591727 A CN108591727 A CN 108591727A CN 201810617826 A CN201810617826 A CN 201810617826A CN 108591727 A CN108591727 A CN 108591727A
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- China
- Prior art keywords
- fixedly connected
- pedestal
- main body
- plate
- regulating device
- 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
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims abstract description 25
- 238000013016 damping Methods 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 235000005121 Sorbus torminalis Nutrition 0.000 claims description 3
- 244000152100 Sorbus torminalis Species 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 20
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/041—Allowing quick release of the apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Educational Technology (AREA)
- Educational Administration (AREA)
- Business, Economics & Management (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Projection Apparatus (AREA)
Abstract
The present invention provides a kind of educational projector frame that stability is good, it is related to instruments used for education field, including pedestal, the centre of the base top is fixedly connected with regulating device, it is provided with adjusting rod at the top of the regulating device, top plate is fixedly connected at the top of the adjusting rod, damping cushion is fixedly connected at the top of the top plate, placement plate is fixedly connected at the top of the damping cushion, the centre at the top of the placement plate is provided with projector main body.The good educational projector frame of the stability, when using the device, by pulling out the stable pin of chassis outer side, it is capable of the supporting surface of enlarged base so that pedestal is more stablized, and will not easily topple over, and receive the amplitude smaller that collision is shaken, effectively raise the stability of the device so that the significant effect of teaching is promoted, easy to use, pass through the damping cushion of top plate top plate, vibrations can be absorbed and be buffered, when receiving impact, can quickly reduce vibrations.
Description
Technical field
The present invention relates to technical field of teaching instruments, the good educational projector frame of specially a kind of stability.
Background technology
Educational projector is a kind of common instruments used for education, is widely used in classroom and conference hall etc., in teaching item
In the preferable multi-media classroom of part, educational projector is usually installed in ceiling.And for interim classroom or classroom it is necessary to borrowing
Projector rack is helped to place educational projector.
But existing educational projector frame is not sufficiently stable mostly, some slight collisions when in use just can to project
Image generates shaking, affects the effect of teaching, and use is not convenient enough.
Invention content
（One）The technical issues of solution
In view of the deficiencies of the prior art, the present invention provides a kind of good educational projector frame of stability, above-mentioned background is solved
The problem of being proposed in technology.
（Two）Technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：A kind of educational projector frame that stability is good,
Including pedestal, the centre of the base top is fixedly connected with regulating device, and adjusting rod is provided at the top of the regulating device,
It is fixedly connected with top plate at the top of the adjusting rod, damping cushion, the damping cushion are fixedly connected at the top of the top plate
Top be fixedly connected with placement plate, the centre at the top of the placement plate is provided with projector main body.
The top of the placement plate and it is fixedly connected with fixed block positioned at the both sides of projector main body, the fixed block
Inside offers the first screw hole, and first screw hole is internally provided with the first screw rod, and first screw rod passes through the first screw hole
It is threadedly coupled with fixed block, the side of first screw rod far from projector main body is sequentially connected with knob, and the fixed block leans on
The side of nearly projector main body and the both sides for being located at the first screw rod have been fixedly connected with resetting spring, and the resetting spring is separate solid
The one end for determining block is fixedly connected with grip block, and the grip block is fixedly connected with clamp pad close to the side of projector main body.
The base block includes upper snubber block, and the center of the upper snubber block bottom is fixedly connected with yielding rubber ball,
The bottom of the yielding rubber ball is fixedly connected with lower snubber block, and yielding rubber pad is provided on the outside of the yielding rubber ball,
The top of the yielding rubber pad is fixedly connected with the bottom of upper snubber block, the bottom of the yielding rubber pad and lower snubber block
Top is fixedly connected.
Preferably, the bottom of the regulating device inner cavity is fixedly connected with servo motor, and the servo motor passes through one
The rotating shaft transmission of side is connected with first bevel gear, is provided with adjustment axis on the left of the first bevel gear, the adjustment axis it is upper
Portion is sequentially connected with second bevel gear, the first bevel gear and second bevel gear intermeshing.
Preferably, partition board is provided with above the servo motor, the top of the adjustment axis is through partition board and transmission company
It is connected to the second screw rod.
Preferably, the regulating device is internally provided with adjustable plate, and the center of the adjustable plate offers the second screw hole,
Second screw rod is threadedly coupled by the second screw hole with adjustable plate, the top of the adjustable plate and the both sides positioned at the second screw hole
It is fixedly connected with adjusting rod, the top of the adjusting rod is fixedly connected through regulating device and with top plate.
Preferably, the pedestal includes pedestal, and the bottom of the pedestal is fixedly connected with the first non-slip mat, the pedestal
Inside offers telescopic chute, and the quantity of the telescopic chute is no less than four.
Preferably, the telescopic chute is internally provided with overturning-preventing bar, and the side of the overturning-preventing bar far from pedestal fix
It is connected with stable pin, the bottom of the stable pin is fixedly connected with the second non-slip mat, first non-slip mat and the second non-slip mat
Bottom offer anti-skid chequer.
（Three）Advantageous effect
The present invention provides a kind of good educational projector framves of stability.Has following advantageous effect：
1, the good educational projector frame of the stability, when using the device, by the way that the stable pin of chassis outer side is pulled out,
It is capable of the supporting surface of enlarged base so that pedestal is more stablized, and will not easily topple over, and receives the amplitude that collision is shaken
Smaller effectively raises the stability of the device so that the significant effect of teaching is promoted, easy to use, passes through subtracting for top plate
Cushion block is shaken, vibrations can be absorbed and be buffered, when being impacted, can quickly reduce vibrations so that projecting apparatus sheet
Body can be settled out quickly so that vibrations influence to be preferably minimized caused by the effect of projection, improve making for the device
With effect, the position of grip block can easily be adjusted by rotation fixed block upper knob convenient for teaching, it can be convenient right
Projector main body is clamped so that projector main body will not be moved arbitrarily, effectively prevent projector main body because unexpected or
It impacts and falls, protect the safety of projector main body, and horizontal position of the projector main body in placement plate can be adjusted,
So that drop shadow effect is outstanding.
2, the good educational projector frame of the stability is rotated, servo motor band by the servo motor inside regulating device
Dynamic first bevel gear rotation, first bevel gear drive second bevel gear rotation, second bevel gear to drive adjustment axis rotation, adjustment axis
The second screw rod is driven to rotate, the rotation of the second screw rod, and the limit that adjusting rod of the adjustable plate at the top of it is generated through regulating device
Position effect can not rotate, therefore adjustable plate can only move up and down, and adjustable plate drives adjusting rod to move up and down, and adjusting rod drives top plate
It moves up and down, just can easily adjust the height of projector main body so that projection enhanced convenience, the effect of projection are more preferable.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is that the present invention places plate structure schematic diagram；
Fig. 3 is regulating device structural schematic diagram of the present invention；
Fig. 4 is schematic diagram of base structure of the present invention；
Fig. 5 is damping cushion structural schematic diagram of the present invention.
In figure：1 pedestal, 2 regulating devices, 3 adjusting rods, 4 placement plates, 5 projector main bodies, 6 damping cushions, 7 clamp pads, 8
Grip block, 9 first screw holes, 10 knobs, 11 first screw rods, 12 fixed blocks, 13 resetting springs, 14 adjustable plates, 15 second bevel gears,
16 adjustment axis, 17 first bevel gears, 18 servo motors, 19 partition boards, 20 second screw holes, 21 second screw rods, snubber block, 23 subtract on 22
Shake rubber pad, 24 times snubber blocks, 25 yielding rubber balls, 26 pedestals, 27 first non-slip mats, 28 overturning-preventing bars, 29 second non-slip mats,
30 telescopic chutes, 31 stable pins, 32 top plates.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of educational projector frame that stability is good, as shown in Figs. 1-5, including pedestal 1, pedestal
1 includes pedestal 26, and the bottom of pedestal 26 is fixedly connected with the first non-slip mat 27, and the inside of pedestal 26 offers telescopic chute 30, stretches
The quantity of contracting slot 30 is no less than four, and telescopic chute 30 is internally provided with overturning-preventing bar 28, and overturning-preventing bar 28 is far from pedestal 26
Side is fixedly connected with stable pin 31, when using the device, can by pulling out the stable pin 31 in 1 outside of pedestal
The supporting surface of enlarged base 1 so that pedestal 1 is more stablized, and will not easily topple over, and receives the amplitude of collision shaking more
It is small, effectively raise the stability of the device so that the significant effect of teaching is promoted, easy to use, the bottom of stable pin 31
It is fixedly connected with the second non-slip mat 29, the bottom of the first non-slip mat 27 and the second non-slip mat 29 offers anti-skid chequer, and pedestal 1 pushes up
The centre in portion is fixedly connected with regulating device 2, and the bottom of 2 inner cavity of regulating device is fixedly connected with servo motor 18, servo motor
18 are connected with first bevel gear 17 by the rotating shaft transmission of one side, are rotated, are watched by the servo motor 18 inside regulating device 2
Taking motor 18 drives first bevel gear 17 to rotate, and the left side of first bevel gear 17 is provided with adjustment axis 16, the top of adjustment axis 16
It is sequentially connected with second bevel gear 15, first bevel gear 17 and second bevel gear 15 are intermeshed, and first bevel gear 17 drives the
Two bevel gears 15 rotate, and the top of servo motor 18 is provided with partition board 19, and the top of adjustment axis 16 is through partition board 19 and transmission company
It is connected to the second screw rod 21, regulating device 2 is internally provided with adjustable plate 14, and the center of adjustable plate 14 offers the second screw hole 20,
Second bevel gear 15 drives adjustment axis 16 to rotate, and adjustment axis 16 drives the rotation of the second screw rod 21, the second screw rod 21 to pass through the second spiral shell
Hole 20 is threadedly coupled with adjustable plate 14, the top of adjustable plate 14 and has been fixedly connected with adjusting rod positioned at the both sides of the second screw hole 20
3, the rotation of the second screw rod 21, and the position-limiting action that adjusting rod 3 of the adjustable plate 14 at the top of it is generated through regulating device 2 can not
Rotation, therefore adjustable plate 14 can only move up and down, the top of adjusting rod 3 is fixedly connected through regulating device 2 and with top plate 32, is adjusted
The top of regulating device 2 is provided with adjusting rod 3, and the top of adjusting rod 3 is fixedly connected with top plate 32, and the top of top plate 32 is fixedly connected
There are damping cushion 6, the top of damping cushion 6 to be fixedly connected with placement plate 4, the centre at 4 top of placement plate is provided with projecting apparatus sheet
Body 5, adjustable plate 14 drive adjusting rod 3 to move up and down, and adjusting rod 3 drives top plate 32 to move up and down, and just can easily adjust projection
The height of instrument ontology 5 so that projection enhanced convenience, the effect of projection are more preferable.
The top of placement plate 4 and be fixedly connected with fixed block 12 positioned at the both sides of projector main body 5, fixed block 12 it is interior
Portion offers the first screw hole 9, and the first screw hole 9 is internally provided with the first screw rod 11, and the first screw rod 11 is by the first screw hole 9 and admittedly
Determine the threaded connection of block 12, the first side of the screw rod 11 far from projector main body 5 is sequentially connected with knob 10, and fixed block 12 is close to throwing
The side of shadow instrument ontology 5 and the both sides for being located at the first screw rod 11 have been fixedly connected with resetting spring 13, and resetting spring 13 is far from solid
The one end for determining block 12 is fixedly connected with grip block 8, and grip block 8 is fixedly connected with clamp pad 7 close to the side of projector main body 5,
By rotation 12 upper knob 10 of fixed block, the position of grip block 8 can be easily adjusted, it can be easily to projector main body 5
It is clamped so that projector main body 5 will not be moved arbitrarily, effectively prevented projector main body 5 and fallen because of unexpected or impact
It falls, protects the safety of projector main body 5, and horizontal position of the projector main body 5 in placement plate 4 can be adjusted so that
Drop shadow effect is outstanding.
26 cushion block of pedestal includes upper snubber block 22, and the center of 22 bottom of upper snubber block is fixedly connected with yielding rubber ball 25,
The bottom of yielding rubber ball 25 is fixedly connected with lower snubber block 24, and the outside of yielding rubber ball 25 is provided with yielding rubber pad 23,
The top of yielding rubber pad 23 is fixedly connected with the bottom of upper snubber block 22, the bottom of yielding rubber pad 23 and lower snubber block 24
Top is fixedly connected, and by the damping cushion 6 of 32 top plate 32 of top plate, vibrations can be absorbed and be buffered, and is receiving impact
When, it can quickly reduce vibrations so that projector main body 5 can be settled out quickly so that shake the effect to projection
Caused by influence to be preferably minimized, improve the using effect of the device, convenient for teaching.
In conclusion the educational projector frame that the stability is good, when using the device, by will 1 outside of pedestal it is steady
To determine foot 31 to pull out, is capable of the supporting surface of enlarged base 1 so that pedestal 1 is more stablized, and will not easily topple over, and
The amplitude smaller that collision is shaken is received, the stability of the device is effectively raised so that the significant effect of teaching is promoted, convenient
It uses, by the damping cushion 6 of 32 top plate 32 of top plate, vibrations can be absorbed and be buffered, it, can be fast when receiving impact
The reduction vibrations of speed so that projector main body 5 can be settled out quickly so that vibrations influence caused by the effect of projection
It is preferably minimized, improves the using effect of the device, it can be convenient by rotating 12 upper knob 10 of fixed block convenient for teaching
The position for adjusting grip block 8, can easily be clamped projector main body 5 so that projector main body 5 will not be moved arbitrarily
It is dynamic, it effectively prevents projector main body 5 and is fallen because of unexpected or impact, protect the safety of projector main body 5, and can
Adjust horizontal position of the projector main body 5 in placement plate 4 so that drop shadow effect is outstanding.
Also, the good educational projector frame of the stability is rotated, servo by the servo motor 18 inside regulating device 2
Motor 18 drives first bevel gear 17 to rotate, and first bevel gear 17 drives second bevel gear 15 to rotate, and second bevel gear 15 drives
Adjustment axis 16 rotates, and adjustment axis 16 drives the rotation of the second screw rod 21, the rotation of the second screw rod 21, and adjustable plate 14 is because of the tune at the top of it
The position-limiting action that pole 3 is generated through regulating device 2 can not rotate, therefore adjustable plate 14 can only move up and down, adjustable plate 14
Adjusting rod 3 is driven to move up and down, adjusting rod 3 drives top plate 32 to move up and down, and just can easily adjust the height of projector main body 5
Degree so that projection enhanced convenience, the effect of projection are more preferable.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of good educational projector frame of stability, including pedestal（1）, it is characterised in that：The pedestal（1）The centre at top
It is fixedly connected with regulating device（2）, the regulating device（2）Top be provided with adjusting rod（3）, the adjusting rod（3）Top
Portion is fixedly connected with top plate（32）, the top plate（32）Top be fixedly connected with damping cushion（6）, the damping cushion（6）
Top be fixedly connected with placement plate（4）, the placement plate（4）The centre at top is provided with projector main body（5）；The placement
Plate（4）Top and be located at projector main body（5）Both sides be fixedly connected with fixed block（12）, the fixed block（12）It is interior
Portion offers the first screw hole（9）, first screw hole（9）Be internally provided with the first screw rod（11）, first screw rod（11）
Pass through the first screw hole（9）With fixed block（12）It is threadedly coupled, first screw rod（11）Far from projector main body（5）Side pass
It is dynamic to be connected with knob（10）, the fixed block（12）Close to projector main body（5）Side and be located at the first screw rod（11）Two
Side has been fixedly connected with resetting spring（13）, the resetting spring（13）Far from fixed block（12）One end be fixedly connected with clamping
Plate（8）, the grip block（8）Close to projector main body（5）Side be fixedly connected with clamp pad（7）；The pedestal（26）Pad
Block includes upper snubber block（22）, the upper snubber block（22）The center of bottom is fixedly connected with yielding rubber ball（25）, described to subtract
Shake ball（25）Bottom be fixedly connected with lower snubber block（24）, the yielding rubber ball（25）Outside be provided with damping rubber
Rubber cushion（23）, the yielding rubber pad（23）Top and upper snubber block（22）Bottom be fixedly connected, the yielding rubber pad
（23）Bottom and lower snubber block（24）Top be fixedly connected.
2. a kind of good educational projector frame of stability according to claim 1, it is characterised in that：The regulating device
（2）The bottom of inner cavity is fixedly connected with servo motor（18）, the servo motor（18）It is connected by the rotating shaft transmission of one side
There is first bevel gear（17）, the first bevel gear（17）Left side be provided with adjustment axis（16）, the adjustment axis（16）It is upper
Portion is sequentially connected with second bevel gear（15）, the first bevel gear（17）And second bevel gear（15）Intermeshing.
3. a kind of good educational projector frame of stability according to claim 2, it is characterised in that：The servo motor
（18）Top be provided with partition board（19）, the adjustment axis（16）Top run through partition board（19）And it is sequentially connected with the second screw rod
（21）.
4. a kind of good educational projector frame of stability according to claim 3, it is characterised in that：The regulating device
（2）Be internally provided with adjustable plate（14）, the adjustable plate（14）Center offer the second screw hole（20）, second screw rod
（21）Pass through the second screw hole（20）With adjustable plate（14）It is threadedly coupled, the adjustable plate（14）Top and be located at the second screw hole
（20）Both sides be fixedly connected with adjusting rod（3）, the adjusting rod（3）Top run through regulating device（2）And and top plate
（32）It is fixedly connected.
5. a kind of good educational projector frame of stability according to claim 1, it is characterised in that：The pedestal（1）Packet
Include pedestal（26）, the pedestal（26）Bottom be fixedly connected with the first non-slip mat（27）, the pedestal（26）Inside open up
There is telescopic chute（30）, the telescopic chute（30）Quantity be no less than four.
6. a kind of good educational projector frame of stability according to claim 5, it is characterised in that：The telescopic chute（30）
Be internally provided with overturning-preventing bar（28）, the overturning-preventing bar（28）Far from pedestal（26）Side be fixedly connected with stable pin
（31）, the stable pin（31）Bottom be fixedly connected with the second non-slip mat（29）, first non-slip mat（27）It is anti-with second
Skidding（29）Bottom offer anti-skid chequer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617826.0A CN108591727A (en) | 2018-06-15 | 2018-06-15 | A kind of educational projector frame that stability is good |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617826.0A CN108591727A (en) | 2018-06-15 | 2018-06-15 | A kind of educational projector frame that stability is good |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108591727A true CN108591727A (en) | 2018-09-28 |
Family
ID=63627659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810617826.0A Pending CN108591727A (en) | 2018-06-15 | 2018-06-15 | A kind of educational projector frame that stability is good |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812668A (en) * | 2018-12-30 | 2019-05-28 | 广东彼雍德云教育科技有限公司 | A kind of online interaction electronic whiteboard |
| CN111365572A (en) * | 2018-12-26 | 2020-07-03 | 青岛海信激光显示股份有限公司 | Projection support and projection system |
| CN112128520A (en) * | 2020-09-12 | 2020-12-25 | 李技涵 | Special leveling mechanism of engineering machine tool |
| CN112944168A (en) * | 2021-02-26 | 2021-06-11 | 青岛黄海学院 | Intelligent online teaching projection device for management and system thereof |
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| CN106292153A (en) * | 2016-11-04 | 2017-01-04 | 嘉兴职业技术学院 | A kind of computer projection instrument of anti-rock |
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| CN109812668A (en) * | 2018-12-30 | 2019-05-28 | 广东彼雍德云教育科技有限公司 | A kind of online interaction electronic whiteboard |
| CN109812668B (en) * | 2018-12-30 | 2020-07-07 | 广东彼雍德云教育科技有限公司 | Online interactive whiteboard |
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| CN112944168A (en) * | 2021-02-26 | 2021-06-11 | 青岛黄海学院 | Intelligent online teaching projection device for management and system thereof |
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