CN106827884A - A kind of blackboard and blackboard device - Google Patents
A kind of blackboard and blackboard device Download PDFInfo
- Publication number
- CN106827884A CN106827884A CN201710260958.8A CN201710260958A CN106827884A CN 106827884 A CN106827884 A CN 106827884A CN 201710260958 A CN201710260958 A CN 201710260958A CN 106827884 A CN106827884 A CN 106827884A
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- Prior art keywords
- blackboard
- passage
- channel
- chain
- driving
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
- A47B97/04—Easels or stands for blackboards or the like
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The present invention relates to teaching aid field, in particular to a kind of blackboard and blackboard device.The invention provides a kind of blackboard, it includes bottom guide, power set, some blackboard bodies and end to end driving-chain, there is passage in bottom guide, driving-chain is in passage, blackboard body is driven to move by power set control driving-chain, its visual effect is good, and stability is high.Some blackboard bodies are set with being not in contact with each other, and reduce collision in use, so as to reduce noise, increased service life.Present invention also offers a kind of blackboard device, it includes above-mentioned blackboard and crane.Crane is located at blackboard both sides, controls the lifting of blackboard, and it possesses height adjusting function, simple structure, beneficial to popularization.
Description
Technical field
The present invention relates to teaching aid field, in particular to a kind of blackboard and blackboard device.
Background technology
Blackboard is common teaching aid in teaching, is write on blackboard with chalk, beneficial to wipe and manufacture it is simpler
It is single.
In the prior art, for sufficiently large write area, blackboard is usually designed into rectangularity, and blackboard is in the horizontal
Span is larger, and teacher needs to walk up and down in writing process, wastes time and energy.And the existing blackboard that can replace at present, pushed away using teacher
Draw to change the position between each blackboard, but because inertia, impact can be produced between blackboard, produce noise, collide in addition
The service life of blackboard can be also reduced, being smoothed out for teaching is have impact on.
The content of the invention
First purpose of the invention is, for not enough present in prior art, there is provided a kind of blackboard, it includes
Bottom guide, power set, some blackboard bodies and end to end driving-chain, there is passage in bottom guide, driving-chain is located at passage
It is interior, drive blackboard body to move by power set control driving-chain, its visual effect is good, and stability is high.Some blackboard bodies are mutual
Non-contiguously set, reduce collision in use, so as to reduce noise, increased service life.
Second object of the present invention is, there is provided a kind of blackboard device, it includes above-mentioned blackboard and crane.Lifting
Blackboard both sides are set up in, the lifting of blackboard is controlled, it possesses height adjusting function, simple structure, beneficial to popularization.
What the present invention was realized in：
A kind of blackboard, it includes bottom guide, some blackboard bodies, power set and end to end driving-chain, bottom guide
On offer end to end passage, in passage, power set are connected driving-chain with driving-chain, for controlling to be driven
Chain is moved along passage, and some blackboard bodies are arranged on driving-chain with being not in contact with each other.
Its visual effect of the blackboard is good, and stability is high and reduces noise, increased service life.
In an embodiment of the present invention：
Some first shanks are arranged at intervals with driving-chain, one end and the blackboard body of the first shank are close to bottom guide one end
Connection, the other end of the first shank stretches into passage and is connected with driving-chain.
In an embodiment of the present invention：
Passage is rectangle, and passage includes first passage, second channel, third channel and the four-way that head and the tail are sequentially connected
Road.
In an embodiment of the present invention：
Second channel both sides are provided with the first limiting plate and the second limiting plate, and the first limiting plate is parallel with the second limiting plate to be set
Put, fourth lane both sides are provided with the 3rd limiting plate and the 4th limiting plate, the 3rd limiting plate and the 4th limiting plate be arranged in parallel.
In an embodiment of the present invention：
Blackboard body is additionally provided with the first alignment pin and the second alignment pin, the first alignment pin and second near the side of bottom guide
Alignment pin is respectively arranged on the first shank both sides.
In an embodiment of the present invention：
Second channel both sides include Five-channel and the 6th passage, and Five-channel and the 6th passage two ends are logical with first respectively
Road and third channel are connected, and Five-channel is equal with the distance of the first shank with the distance and the first alignment pin of second channel, the
Six passages are equal with the distance of the first shank with the distance and the second alignment pin of second channel, and fourth lane both sides include that the 7th leads to
Road and the 8th passage, the 7th passage and the 8th passage two ends are connected with first passage and third channel respectively, the 7th passage and
The distance of four-way and the first alignment pin are equal with the distance of the first shank, and the 8th passage is fixed with the distance of fourth lane and second
Position pin is equal with the distance of the first shank.
In an embodiment of the present invention：
Power set are motor and gear, and gear is engaged with driving-chain, and motor is connected with gear drive.
In an embodiment of the present invention：
Blackboard also includes control device, and control device is electrically connected with power set.
In an embodiment of the present invention：
Blackboard also include upper guide plate, upper guide plate located at blackboard body away from bottom guide side, offered on upper guide plate with
The corresponding sliding channel of passage, blackboard body is slidably connected by the second shank and sliding channel.
A kind of blackboard device, it includes above-mentioned blackboard and crane, and crane is respectively arranged on blackboard both sides, and crane includes
Latch, the first support body and the second support body, the second support body are connected with blackboard, and the second support body is slidably connected with the first support body, the
One support body and the second support body include spaced some through holes in vertical direction, and latch optionally coordinates with through hole.
The blackboard device possesses height adjusting function, simple structure, beneficial to popularization.
The present invention at least possesses following beneficial effect：
The invention provides a kind of blackboard, it includes bottom guide, power set, some blackboard bodies and end to end biography
Dynamic chain, there is passage in bottom guide, driving-chain drives blackboard body to move in passage by power set control driving-chain, its
Visual effect is good, and stability is high.Some blackboard bodies are set with being not in contact with each other, and reduce collision in use, are made an uproar so as to reduce
Sound, increased service life.
Present invention also offers a kind of blackboard device, it includes above-mentioned blackboard and crane.Crane is located at blackboard both sides,
The lifting of blackboard is controlled, it possesses height adjusting function, simple structure, beneficial to popularization.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the schematic diagram of blackboard in the embodiment of the present invention 1；
Fig. 2 is the schematic diagram of blackboard body in the embodiment of the present invention 1；
Fig. 3 is the schematic diagram of bottom guide in the embodiment of the present invention 1；
Fig. 4 is the schematic diagram of power set in the embodiment of the present invention 1；
Fig. 5 is the schematic diagram of blackboard device in the embodiment of the present invention 2；
Fig. 6 is the schematic diagram of crane in the embodiment of the present invention 2.
In figure：100- blackboards；110- bottom guides；120- blackboard bodies；130- motor；131- gears；140- driving-chains；
151- first passages；152- second channels；153- third channels；154- fourth lanes；155- Five-channels；156- the 6th leads to
Road；The passages of 157- the 7th；The passages of 158- the 8th；The limiting plates of 161- first；The limiting plates of 162- second；The shanks of 171- first；172-
Second shank；The alignment pins of 173- first；The alignment pins of 175- second；180- control devices；190- upper guide plates；191- light fixtures；200-
Blackboard device；210- cranes；The support bodys of 211- first；The support bodys of 212- second；213- latches.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Present invention implementation generally described and illustrated in accompanying drawing herein
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to the orientation or position of the instruction such as explanation, term " " center ", " on ", D score
Relation is or the orientation or position that the invention product is usually put when using based on orientation shown in the drawings or position relationship
Relation, is for only for ease of the description present invention and simplifies description, must have rather than the device or element for indicating or imply meaning
Have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.Additionally, term " the
One ", " second " etc. is only used for distinguishing description, and it is not intended that indicating or implying relative importance.
Embodiment 1
It is a kind of blackboard 100 that the present embodiment is provided with reference to Fig. 1, in figure, it includes bottom guide 110, some blackboard bodies
120th, power set and end to end driving-chain 140.
End to end passage is offered on bottom guide 110, driving-chain 140 is in the passage.Power set and transmission
Chain 140 is connected, for controlling driving-chain 140 to be moved along passage.
With reference to Fig. 2, be arranged at intervals with some first shanks 171 on driving-chain 140, one end of the first shank 171 with
Blackboard body 120 is connected near one end of bottom guide 110, and the other end of the first shank 171 stretches into passage and connects with driving-chain 140
Connect.When power set drive driving-chain 140 to be moved along passage, blackboard body 120 is driven to move by first shank 171.
It should be noted that in the present embodiment, the one end of the first shank 171 with and the close one end center of bottom guide 110 of blackboard body 120
Position connects, and in other specific embodiments, can be not attached to blackboard body 120 near one end centre bit of bottom guide 110
Connection is put, additionally, according to actual needs, first shank 171 can be not provided with, and be passed through other devices and is connected, such as connected
Extension bar etc..
Fig. 3 is please also refer to, in the present embodiment, passage is rectangle, it includes the first passage that head and the tail are sequentially connected
151st, second channel 152, third channel 153 and fourth lane 154.First shank 171 is along first passage 151, second channel
152nd, third channel 153 and fourth lane 154 are moved, to control the movement of blackboard body 120.
With reference to Fig. 4, because blackboard body 120 has constant weight and be template, along second channel 152 or fourth lane
During 154 motion, deflection can be produced, influence the visible angle of user and the stability of transmission.Therefore in the present embodiment, second
The both sides of passage 152 are provided with the first limiting plate 161 and the second limiting plate 162, and the first limiting plate 161 is parallel with the second limiting plate 162
Set.The both sides of fourth lane 154 are provided with the 3rd limiting plate and the 4th limiting plate, the 3rd limiting plate and the 4th limiting plate is parallel sets
Put.First shank 171 during motion, hangs down in second channel 152 because the first limiting plate 161 and the second limiting plate 162 limit it
The free degree on the direction of straight second channel 152, it is to avoid the deflection that blackboard body 120 is produced in use.
In the motion process that driving-chain 140 drives the first shank 171, the first shank 171 is along second channel 152 second
Moved on the bearing of trend of passage 152.Ensure that the stability of the motion of blackboard body 120 and the visible angle of user.Similarly,
By the setting of the 3rd limiting plate and the 4th limiting plate, the first shank 171 is set to prolong along fourth lane 154 in fourth lane 154
Stretch and moved on direction, increase stability and ensure that the visible angle of user.It should be noted that in other specific embodiment parties
In formula, according to actual needs, first limiting plate 161, the second limiting plate 162, the 3rd limiting plate and can be not provided with
Four limiting plates.
Referring again to Fig. 2 and Fig. 3, further, in order to ensure the stability of blackboard body 120, blackboard body 120 is leaned on
The side of nearly bottom guide 110 is additionally provided with the first alignment pin 173 and the second alignment pin 175.First alignment pin 173 and the second alignment pin
175 both sides for being respectively arranged on the first shank 171.In bottom guide 110, the both sides of second channel 152 include Five-channel 155 and the
Six passages 156.Five-channel 155 is located at side of the second channel 152 away from fourth lane 154, and the 6th passage 156 is located at second
Passage 152 is near the side of fourth lane 154.Five-channel 155 and the two ends of the 6th passage 156 respectively with first passage 151 and
Third channel 153 is connected, the distance between Five-channel 155 and second channel 152 and the first alignment pin 173 and the first shank
The distance between 171 is equal, the distance between the 6th passage 156 and second channel 152 and the second alignment pin 175 and the first shank
The distance between 171 is equal.In the motion of blackboard body 120, the first alignment pin 173 is in Five-channel 155 along Five-channel
155 bearing of trends are moved, and the second alignment pin 175 is moved in the 6th passage 156 along the bearing of trend of the 6th passage 156.Need
It is bright, in other specific embodiments, according to actual needs, it is fixed that the first alignment pin 173 or second can be only set
Position pin 175, can also all be not provided with.
Likewise, the both sides of fourth lane 154 include the 7th passage 157 and the 8th passage 158.7th passage 157 is located at the
, near the side of second channel 152, the 8th passage 158 is located at fourth lane 154 away from the one of second channel 152 for four-way 154
Side.7th passage 157 and the two ends of the 8th passage 158 are connected with first passage 151 and third channel 153 respectively, the 7th passage 157
It is equal with the distance between the first shank 171 with the distance between fourth lane 154 and the first alignment pin 173, the 8th passage 158
It is equal with the distance between the first shank 171 with the distance between fourth lane 154 and the second alignment pin 175.
In the motion of blackboard body 120, the first alignment pin 173 is in the 7th passage 157 along the bearing of trend of the 7th passage 157
Mobile, the second alignment pin 175 is moved in the 8th passage 158 along the bearing of trend of the 8th passage 158.Due to the first alignment pin 173
The both sides of the first shank 171 are located at the second alignment pin 175, when blackboard body 120 exists along first passage 151 or third channel 153
When being moved on its bearing of trend, the first alignment pin 173 and the second alignment pin 175 are simultaneously in first passage 151 or third channel 153
Interior movement.It should be noted that in other specific embodiments, according to actual needs, can only set Five-channel
155 and the 6th any one passage in passage 156, any one passage in the 7th passage 157 and the 8th passage 158 may be used also
To be not provided with.
With reference to Fig. 4, power set are motor 130 and gear 131.Gear 131 is engaged with driving-chain 140, motor 130
It is connected with gear 131.In the present embodiment, gear 131 is located at first passage 151 and the junction of second channel 152, electronic
Machine 130 is located at direction of the bottom guide 110 away from blackboard body 120.When using, by the rotating of motor 130, band moving gear
131 rotatings are so as to control movement of the driving-chain 140 in passage.
Referring again to Fig. 1, in the present embodiment, blackboard 100 also includes control device 180, control device 180 and power
Device is connected.In the present embodiment, control device 180 is connected with motor 130, by the control device 180, realizes to motor
The control of 130 rotatings, and in the case that blackboard 100 includes polylith blackboard body 120, for monolithic blackboard body
120 displacement etc..It should be noted that in other specific embodiments, according to actually used situation, power set are also
Can be other equipment, such as linear electric motors.Additionally, according to different service conditions, can also be without setting control device 180.
Blackboard 100 also includes upper guide plate 190, and upper guide plate 190 is located at side of the blackboard body 120 away from bottom guide 110.For
The blackboard body 120 is slided between upper guide plate 190 and bottom guide 110, therefore offered and bottom guide on upper guide plate 190
The corresponding sliding channel of 110 internal channels.Blackboard body 120 is provided with the second shank 172, blackboard away from the side of bottom guide 110
Body 120 is slidably connected by the second shank 172 with sliding channel.
In the present embodiment, upper guide plate 190 is additionally provided with light fixture 191 near the side of blackboard body 120, is existed by light fixture 191
The provided auxiliary of blackboard body 120 is illuminated in use, increases the visual effect of the blackboard 100.
Some blackboard bodies 120 are arranged on driving-chain 140 with being not in contact with each other.In the present embodiment, blackboard body 120 includes
Three, three blackboard bodies 120 are non-touching to be arranged on driving-chain 140 by the first shank 171.In the band of driving-chain 140
When dynamic blackboard body 120 is moved, it is to avoid because the slip that inertia occurs, makes to be collided between blackboard body 120, from
And the service life of blackboard 100 is increased, and the noise that may be sent when reducing collision, optimize teaching environment.Need
Illustrate, in other specific embodiments, blackboard body 120 can also be two or four or more than four.
A kind of blackboard 100 in the present embodiment is so work：
Three pieces of blackboard bodies 120 are connected by the first shank 171 with driving-chain 140, and user is enterprising in blackboard body 120
Running hand is write.When switching blackboard 100 is needed, motor 130 is controlled to rotate by control device 180, motor 130 passes through gear
131 drive driving-chains 140 are rotated in passage, and when motor 130 is rotated forward, centrally located blackboard body 120 is the
Moved to second channel 152 in one passage 151, when the first shank of bottom 171 of blackboard body 120 enters the by first passage 151
During two passages 152, the first alignment pin 173 enters Five-channel 155, and the second alignment pin 175 enters the 6th passage 156, while by
The first limiting plate 161 and the second limiting plate 162 in the both sides of first passage 151 control, it is to avoid blackboard body 120 is in movement
Deflection, it is ensured that stability.Now, the blackboard body 120 positioned at blackboard body 120 near the side of fourth lane 154 is located at three
The centre position of block blackboard body 120.When motor 130 is rotated further, blackboard body 120 is along second channel 152, third channel
153 and fourth lane 154 sequentially pass through, stopped for writing or watching position is needed.
A kind of blackboard 100 in the present embodiment, visual effect is good, stability is high and blackboard body 120 between complementary contact
Setting reduce noise, its long service life.
Embodiment 2
It is a kind of blackboard device 200 that the present embodiment is provided with reference to Fig. 5, in figure, it includes a kind of blackboard in embodiment 1
100 and crane 210.Crane 210 includes two, is respectively provided with the both sides with blackboard 100.
With reference to Fig. 6, crane 210 includes slotting, the first support body 211 and the second support body 212, the second support body 212 and blackboard 100
Connection.Second support body 212 is slidably connected in the longitudinal direction with the first support body 211.First support body 211 and the second support body
212 include spaced some through holes in vertical direction, and latch 213 optionally coordinates with through hole.Latch 213 is by
One support body 211 sequentially passes through the first support body 211 and the second support body 212, by latch away from the through hole of the side of the second support body 212
213 limitation, when latch 213 inserts the first support body 211 and the second support body 212, it is to avoid the first support body 211 and the second support body
212 slide, and to realize the fixation of height, and the support of blackboard 100 are realized by the crane 210.
When 200 highly desirable regulation of blackboard device, latch 213 is extracted, make the first support body 211 and the second support body 212
Between slide, when blackboard 100 reaches proper height, by latch 213 again through through hole insert the first support body 211 and the second frame
Body 212, completes the regulation of height.
The blackboard device 200 possess height regulation function, simple structure, beneficial to popularization, and by second support with it is black
Plate 100 is connected, and visual effect is good, and stability is high and long service life.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of blackboard, it is characterised in that：The blackboard includes bottom guide, some blackboard bodies, power set and end to end
Driving-chain；End to end passage is offered on the bottom guide；The driving-chain is in the passage；The power dress
Put and be connected with the driving-chain, for controlling the driving-chain to be moved along the passage；Some blackboard bodies are mutual not
It is placed in contact with the driving-chain.
2. a kind of blackboard according to claim 1, it is characterised in that：Some first pins are arranged at intervals with the driving-chain
Body；One end of first shank is connected with the blackboard body near bottom guide one end, and the other end of first shank is stretched
Enter the passage and be connected with the driving-chain.
3. a kind of blackboard according to claim 2, it is characterised in that：The passage is rectangle, and the passage includes head and the tail
First passage, second channel, third channel and the fourth lane being sequentially connected.
4. a kind of blackboard according to claim 3, it is characterised in that：The second channel both sides be provided with the first limiting plate and
Second limiting plate；First limiting plate be arranged in parallel with second limiting plate；The fourth lane both sides are provided with the 3rd limit
Position plate and the 4th limiting plate；3rd limiting plate and the 4th limiting plate be arranged in parallel.
5. a kind of blackboard according to claim 3, it is characterised in that：The blackboard body is near the side of the bottom guide
It is additionally provided with the first alignment pin and the second alignment pin；First alignment pin and second alignment pin are respectively arranged on first pin
Body both sides.
6. a kind of blackboard according to claim 5, it is characterised in that：The second channel both sides include Five-channel and the
Six passages；The Five-channel and the 6th passage two ends are connected with the first passage and the third channel respectively；Institute
State Five-channel equal with the distance of the first shank with the distance and first alignment pin of the second channel；Described 6th leads to
Road is equal with the distance of the first shank with the distance and second alignment pin of the second channel；The fourth lane both sides bag
Include the 7th passage and the 8th passage；7th passage and the 8th passage two ends respectively with the first passage and described
Triple channel is connected；7th passage is equal with the distance of the first shank with the distance and first alignment pin of fourth lane；
8th passage is equal with the distance of the first shank with the distance and second alignment pin of the fourth lane.
7. a kind of blackboard according to claim 1, it is characterised in that：The power set are motor and gear；It is described
Gear is engaged with the driving-chain；The motor is connected with the gear drive.
8. a kind of blackboard according to claim 1, it is characterised in that：The blackboard also includes control device；The control
Device is electrically connected with the power set.
9. the blackboard according to any one in claim 1-8, it is characterised in that：The blackboard also includes upper guide plate；Institute
State upper guide plate and be located at side of the blackboard body away from the bottom guide；Offered on the upper guide plate corresponding with the passage
Sliding channel；The blackboard body is slidably connected by the second shank with the sliding channel.
10. a kind of blackboard device, it includes the blackboard and crane described in any one in the claims 1-9；The liter
Drop frame is respectively arranged on the blackboard both sides；The crane includes latch, the first support body and the second support body；Second support body with
The blackboard connection；Second support body is slidably connected with first support body；First support body and the second support body exist
Include spaced some through holes in vertical direction；The latch optionally coordinates with the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260958.8A CN106827884B (en) | 2017-04-20 | 2017-04-20 | A kind of blackboard and blackboard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260958.8A CN106827884B (en) | 2017-04-20 | 2017-04-20 | A kind of blackboard and blackboard device |
Publications (2)
| Publication Number | Publication Date |
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| CN106827884A true CN106827884A (en) | 2017-06-13 |
| CN106827884B CN106827884B (en) | 2018-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710260958.8A Expired - Fee Related CN106827884B (en) | 2017-04-20 | 2017-04-20 | A kind of blackboard and blackboard device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109035897A (en) * | 2018-08-28 | 2018-12-18 | 广东海翔教育科技有限公司 | A kind of university education displaying device |
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| CN203832078U (en) * | 2014-05-09 | 2014-09-17 | 长春理工大学 | Rotating-type multi-face blackboard |
| CN105270045A (en) * | 2014-06-16 | 2016-01-27 | 东北林业大学 | Cycle self-clean blackboard using hold-in range to drive planet belt pulley |
| CN203945868U (en) * | 2014-07-25 | 2014-11-19 | 廖卫杰 | A kind of circulating water wash blackboard |
| CN104275968A (en) * | 2014-10-27 | 2015-01-14 | 西安理工大学 | Blackboard |
| CN104309367A (en) * | 2014-11-17 | 2015-01-28 | 重庆理工大学 | Mobile rotary blackboard |
| JP2016112817A (en) * | 2014-12-16 | 2016-06-23 | 株式会社青井黒板製作所 | Travel device of projector for display board |
| CN205705866U (en) * | 2016-03-18 | 2016-11-23 | 张飞跃 | A kind of multifunctional motor-driven Reelable blackboard |
| CN205661211U (en) * | 2016-04-18 | 2016-10-26 | 王星远 | Portable removes blackboard |
| CN207120592U (en) * | 2017-04-20 | 2018-03-20 | 武汉轻工大学 | A kind of blackboard and blackboard device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109035897A (en) * | 2018-08-28 | 2018-12-18 | 广东海翔教育科技有限公司 | A kind of university education displaying device |
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| CN106827884B (en) | 2018-07-24 |
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