CN105882244B - It is a kind of to avoid reflective blackboard - Google Patents
It is a kind of to avoid reflective blackboard Download PDFInfo
- Publication number
- CN105882244B CN105882244B CN201610229075.6A CN201610229075A CN105882244B CN 105882244 B CN105882244 B CN 105882244B CN 201610229075 A CN201610229075 A CN 201610229075A CN 105882244 B CN105882244 B CN 105882244B
- Authority
- CN
- China
- Prior art keywords
- frame
- support bar
- blackboard body
- blackboard
- gear
- 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.)
- Expired - Fee Related
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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
-
- 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
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
Abstract
Reflective blackboard, including framework, first support bar, second support bar, the 3rd support bar, the first blackboard body, the second blackboard body, the 3rd blackboard body, drive mechanism are avoided the invention discloses a kind of；Framework includes the first frame, the second frame, the 3rd frame, the 4th frame, and the first frame, the second frame, the 3rd frame, the 4th frame are sequentially arranged, and the first frame and the 3rd frame are positioned opposite, and the first frame is arranged vertically with the 3rd frame；Second frame and the 4th frame are positioned opposite, and the second frame is placed in the top of the 4th frame, and the second frame and the 4th frame are horizontally disposed.The present invention can effectively adjust the fixture between the first blackboard body, the 3rd blackboard body and perpendicular, and the student that can preferably adapt to diverse location is observed, better adaptability, avoid it is reflective caused by influence, teaching is more convenient.
Description
Technical field
The present invention relates to realia technical field, more particularly to a kind of avoid reflective blackboard.
Background technology
Blackboard is the instrument that must be used during we impart knowledge to students, but the blackboard under technology has following defect at present, for example,
Due to classroom, middle school student are more, when being sitting in the observation of students blackboard at edge because it is reflective the reason for cause to observe unclear, cause
Impart knowledge to students constant, also influence study, need further to be improved.
The content of the invention
In order to solve technical problem present in background technology, the present invention propose it is a kind of avoid reflective blackboard, be easy to
Teaching.
It is a kind of to avoid reflective blackboard, including framework, first support bar, second support bar, the 3rd support bar, the first blackboard
Body, the second blackboard body, the 3rd blackboard body, drive mechanism；
Framework includes the first frame, the second frame, the 3rd frame, the 4th frame, the first frame, the second frame, the 3rd side
Frame, the 4th frame are sequentially arranged, and the first frame and the 3rd frame are positioned opposite, and the first frame is arranged vertically with the 3rd frame；
Second frame and the 4th frame are positioned opposite, and the second frame is placed in the top of the 4th frame, the second frame and the 4th equal water of frame
Plain cloth is put；
The length direction of first support bar, second support bar, the 3rd support bar along the second frame is sequentially arranged, the first support
Bar, second support bar, the 3rd support bar arrange vertically, first support bar, the first end of the 3rd support bar with the second frame
Rotation connection, first support bar, the second end of the 3rd support bar are rotatablely connected with the 4th frame, the first end of second support bar
It is connected with the second frame, the second end of second support bar is connected with the 4th frame；
First blackboard body, the second blackboard body, the 3rd blackboard body are separately mounted to first support bar, the second support
On bar, the 3rd support bar；
Drive mechanism is used to drive the first blackboard body and/or the 3rd blackboard body to rotate.
Preferably, the back side of the second blackboard body is provided with first gear teeth, and first gear teeth are arranged in a vertical direction；
Second blackboard body and the removable connection of second support bar；
Also include screw mandrel, screw mandrel is placed in the second blackboard body close to the side at its back side, screw mandrel and second support bar
Parallel arrangement, screw mandrel and the 4th frame are rotatablely connected, screw mandrel and above-mentioned first gear teeth meshing.
Preferably, in addition to first gear, second gear, first gear are arranged on screw mandrel, second gear rotational installation
On the 4th frame, second gear is placed in the side of first gear, and second gear engages with first gear, the radius of second gear
More than the radius of first gear.
Preferably, in addition to handle, handle are arranged in second gear.
Preferably, drive mechanism includes the first drive division, the second drive division；
First drive division includes the first tumbler, first connecting rod, second connecting rod, the first movable block, first rotating shaft；First turn
Moving part is arranged in the first blackboard body, and first connecting rod is placed in side of first tumbler away from the first frame, first connecting rod
First end is rotatablely connected with the 4th frame, and the second end and the first tumbler of first connecting rod are rotatablely connected, and the first of second connecting rod
End is rotatablely connected with the first tumbler, and the second end of second connecting rod is rotatablely connected with the first movable block, and the first movable block is placed in the
One tumbler is close to the side of the first frame, the first movable block and the removable connection of the 4th frame, and the first movable block is provided with the
One through hole, the axis of first through hole is parallel with the length direction of the 4th frame, and the inner circumferential surface of first through hole is provided with the second wheel
Tooth；The length direction of first rotating shaft and the 4th frame are arranged in parallel, and first rotating shaft is rotatablely connected with the first frame, first rotating shaft
One end is placed in first through hole, and the peripheral surface of first rotating shaft is provided with the third round tooth being meshed with second gear teeth；
Second drive division includes the second tumbler, third connecting rod, fourth link, the second movable block, the second rotating shaft；Second turn
Moving part is arranged in the 3rd blackboard body, and third connecting rod is placed in side of second tumbler away from the 3rd frame, third connecting rod
First end is rotatablely connected with the 4th frame, and the second end and the second tumbler of third connecting rod are rotatablely connected, and the first of fourth link
End is rotatablely connected with the second tumbler, and the second end of fourth link is rotatablely connected with the second movable block, and the second movable block is placed in the
Two tumblers are close to the side of the 3rd frame, the second movable block and the removable connection of the 4th frame, and the second movable block is provided with the
Two through holes, the axis of the second through hole is parallel with the length direction of the 4th frame, and the inner circumferential surface of the second through hole is provided with fourth round
Tooth；The length direction of second rotating shaft and the 4th frame are arranged in parallel, and the second rotating shaft is rotatablely connected with the 3rd frame, the second rotating shaft
One end is placed in the second through hole, and the peripheral surface of the second rotating shaft is provided with the 5th gear teeth being meshed with fourth round tooth.
Preferably, the first drive division also includes the first rotational handle, and the first rotational handle is arranged in first rotating shaft；
Second drive division also includes the second rotational handle, and the second rotational handle is arranged in the second rotating shaft.
Preferably, the second blackboard body front is provided with guide rail, and guide rail is arranged vertically；
Also include supporting plate, bristle, power unit, supporting plate horizontally or diagonally arranges that supporting plate is placed in the second blackboard sheet
Body is close to its positive side, supporting plate and the removable connection of guide rail；
Bristle is arranged on supporting plate close to the side of the second blackboard body；
Power unit is used to drive supporting plate to move along the length direction of guide rail.
Preferably, supporting plate is provided with multiple air suction openings close to the side of the second blackboard body, and cavity volume is provided with supporting plate, on
Multiple air suction openings are stated to connect with cavity volume；
Also include induced-draught fan, connecting tube, induced-draught fan is connected by connecting tube with cavity volume.
Preferably, the aperture of air suction opening is gradually reduced from the second blackboard body to the direction away from the second blackboard body.
Preferably, each composition and percentage by weight of framework are：C：2.5-2.6%, Cr：17.8-18.8%, Mn：1—
1.2%th, Si：1.22-1.26%, B：0.2-0.3%, Ti：0.8-0.9%, Mo：0.2-0.3%, S：≤ 0.02%, P：
≤ 0.02%；Surplus is Fe and inevitable impurity.
Cr：When the constant increase Cr amounts of C amounts, or the constant reduction C amounts of Cr amounts, it can improve quenching degree.Work as eutectic carbide
It is constant, and Cr/C be 7-8 when, failure crack extended capability, anti-wear performance are most strong, comprehensive analysis, C：2.5-2.6%, Cr：
17.8-18.8%.
Si：General control can strengthen matrix between 1.1-1.3%；But if the too high levels of silicon amount,
Influence wearability, therefore, Si：1.22-1.26%.
Mn：Can thinning microstructure, improve toughness.
B：Can crystal grain thinning.
Ti：Improve wearability.
Framework toughness, the wearability obtained according to said ratio is good, and hardness is high, is hardly damaged, service life length.
In the present invention, when in use, the both ends of blackboard are easily reflective, i.e. the first blackboard body, the 3rd blackboard body are easy
It is reflective, when needing to adjust the angle between the first blackboard body, the 3rd blackboard body and perpendicular, driving machine can be utilized
Structure drives them to rotate.
First rotating shaft is driven to rotate using the first rotational handle, first rotating shaft drives the by third round tooth, second gear teeth
One movable block moves along the 4th frame to the first tumbler direction, coordinates first connecting rod, second connecting rod to jack up the first tumbler,
Allow the first blackboard body to be rotated centered on first support bar, and then adjust the folder between the first blackboard body and perpendicular
Angle.
The second axis of rotation is driven using the second rotational handle, and the second rotating shaft passes through the 5th gear teeth, fourth round cingulum dynamic the
Two movable blocks move along the 4th frame to the second tumbler direction, coordinate third connecting rod, fourth link to jack up the second tumbler,
Allow the 3rd blackboard body to be rotated centered on the 3rd support bar, and then adjust the folder between the 3rd blackboard body and perpendicular
Angle.
The student that diverse location can preferably be adapted to is observed, better adaptability, avoid it is reflective caused by influence, religion
It is more convenient to learn.
Drive second gear to rotate using handle, drive screw mandrel to rotate by first gear, and then drive the second blackboard sheet
Body vertically moves, and adjusts the height of the second blackboard body, is easy to teacher to impart knowledge to students.
Supporting plate movement is driven using power unit, the font in the second blackboard body is removed using bristle.When bristle with
Chalk font can produce substantial amounts of dust when rubbing, and the cavity volume air draught in supporting plate, dust are passed through using induced-draught fan, connecting tube
Air suction opening enters in cavity volume, is then discharged by induced-draught fan, and so as to prevent dust disorderly to fly, chalk dust contains in reduction air
Amount, has beautified teaching environment, has reduced environmental pollution.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the rearview of the second blackboard body of the present invention；
Fig. 3 is the sectional view after the supporting plate amplification of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutual combination；Below with reference to the accompanying drawings and in conjunction with the embodiments the present invention is elaborated.
Reference picture 1,2,3：
It is proposed by the present invention a kind of to avoid reflective blackboard, including framework, first support bar 1, second support bar the 2, the 3rd
Support bar 3, the first blackboard body 4, the second blackboard body 5, the 3rd blackboard body 6, drive mechanism, screw mandrel 8, first gear 9,
Two gears 10, handle 11, supporting plate 25, bristle 26, power unit 27, induced-draught fan 30, connecting tube.
Framework includes the first frame, the second frame, the 3rd frame, the 4th frame, the first frame, the second frame, the 3rd side
Frame, the 4th frame are sequentially arranged, and the first frame and the 3rd frame are positioned opposite, and the first frame is arranged vertically with the 3rd frame；
Second frame and the 4th frame are positioned opposite, and the second frame is placed in the top of the 4th frame, the second frame and the 4th equal water of frame
Plain cloth is put.
The length direction of first support bar 1, second support bar 2, the 3rd support bar 3 along the second frame is sequentially arranged, and first
The vertical arrangement of support bar 1, second support bar 2, the 3rd support bar 3, first support bar 1, the first end of the 3rd support bar 3 with
Second frame is rotatablely connected, and first support bar 1, the second end of the 3rd support bar 3 are rotatablely connected with the 4th frame, the second support
The first end of bar 2 is connected with the second frame, and the second end of second support bar 2 is connected with the 4th frame.
First blackboard body 4, the second blackboard body 5, the 3rd blackboard body 6 are separately mounted to first support bar 1, second
On strut 2, the 3rd support bar 3.
Drive mechanism is used to drive the first blackboard body 4 and/or the 3rd blackboard body 6 to rotate.
In the present embodiment, the back side of the second blackboard body 5 is provided with first gear teeth 7, and first gear teeth 7 are arranged in a vertical direction.
Second blackboard body 5 and the removable connection of second support bar 2.
Screw mandrel 8 is placed in the second blackboard body 5 close to the side at its back side, screw mandrel 8 and 2 parallel cloth of second support bar
Put, the frame of screw mandrel 8 and the 4th rotation connection, screw mandrel 8 engages with above-mentioned first gear teeth 7.
Further, first gear 9 is arranged on screw mandrel 8, and second gear 10 is rotatably installed on the 4th frame, the second tooth
Wheel 10 is placed in the side of first gear 9, and second gear 10 engages with first gear 9, and the radius of second gear 10 is more than the first tooth
The radius of wheel 9；Handle 11 is arranged in second gear 10.
In the present embodiment, drive mechanism includes the first drive division, the second drive division；First drive division includes the first tumbler
12nd, first connecting rod 13, second connecting rod 14, the first movable block 15, first rotating shaft 16, the first rotational handle 22；First tumbler 12
In the first blackboard body 4, first connecting rod 13 is placed in the first side of the tumbler 12 away from the first frame, first connecting rod 13
First end and the 4th frame be rotatablely connected, the second end of first connecting rod 13 is rotatablely connected with the first tumbler 12, second connecting rod
14 first end is rotatablely connected with the first tumbler 12, and the second end of second connecting rod 14 is rotatablely connected with the first movable block 15, the
One movable block 15 is placed in the first tumbler 12 close to the side of the first frame, the first movable block 15 and the removable company of the 4th frame
Connect, the first movable block 15 is provided with first through hole, and the axis of first through hole is parallel with the length direction of the 4th frame, first through hole
Inner circumferential surface be provided with second gear teeth；The length direction of first rotating shaft 16 and the 4th frame are arranged in parallel, first rotating shaft 16 with
First frame is rotatablely connected, and one end of first rotating shaft 16 is placed in first through hole, and the peripheral surface of first rotating shaft 16 is provided with and the
The third round tooth that two gear teeth are meshed.
Second drive division includes the second tumbler 17, third connecting rod 18, fourth link 19,20, second turns of the second movable block
Axle 21, the second rotational handle 23；Second tumbler 17 is arranged in the 3rd blackboard body 6, and third connecting rod 18 is placed in the second rotation
Side of the part 17 away from the 3rd frame, the first end of third connecting rod 18 are rotatablely connected with the 4th frame, and the second of third connecting rod 18
End is rotatablely connected with the second tumbler 17, and the first end of fourth link 19 is rotatablely connected with the second tumbler 17, fourth link 19
The second end be rotatablely connected with the second movable block 20, the second movable block 20 is placed in the second tumbler 17 close to the one of the 3rd frame
The removable connection of side, the second movable block 20 and the 4th frame, the second movable block 20 are provided with the second through hole, the axis of the second through hole
Parallel with the length direction of the 4th frame, the inner circumferential surface of the second through hole is provided with fourth round tooth；The length side of second rotating shaft 21
It is arranged in parallel to the 4th frame, the second rotating shaft 21 and the 3rd frame are rotatablely connected, and one end of the second rotating shaft 21 is placed in second and led to
In hole, the peripheral surface of the second rotating shaft 21 is provided with the 5th gear teeth being meshed with fourth round tooth.
Further, the first rotational handle 22 is arranged in first rotating shaft 16；Second rotational handle 23 is arranged on second turn
On axle 21.
In the present embodiment, the front of the second blackboard body 5 is provided with guide rail 24, and guide rail 24 is arranged vertically；Supporting plate 25 is horizontal
Or be in tilted layout, supporting plate 25 is placed in the second blackboard body 5 close to its positive side, supporting plate 25 and the removable company of guide rail 24
Connect；Bristle 26 is arranged on supporting plate 25 close to the side of the second blackboard body 5；Power unit 27 is used to drive supporting plate 25 along leading
The length direction movement of rail 24.
In the present embodiment, supporting plate 25 is provided with multiple air suction openings 28 close to the side of the second blackboard body 5, in supporting plate 25
Provided with cavity volume 29, above-mentioned multiple air suction openings 28 connect with cavity volume 29；Induced-draught fan 30 is connected by connecting tube with cavity volume 29.
Further, the aperture of air suction opening 28 gradually subtracts from the second blackboard body 5 to the direction away from the second blackboard body 5
It is small；Air suction opening 28 is larger close to the aperture of the side of bristle 26, expands dust suction area, and aperture is gradually reduced, wind speed increase, air-flow stream
Dynamic speed is fast, avoids air suction opening 28 from blocking, and improves dust collection efficiency.
In the present embodiment, each composition and percentage by weight of framework are：C：2.55%th, Cr：18.4%th, Mn：1.05%th,
Si：1.24%th, B：0.28%th, Ti：0.85%th, Mo：0.22%th, S：≤ 0.02%, P：≤ 0.02%；Surplus is Fe and can not kept away
The impurity exempted from.Framework anti-wear performance is good, is hardly damaged, service life length.
When in use, the both ends of blackboard are easily reflective, i.e., the first blackboard body 4, the 3rd blackboard body 6 are easily reflective, when
When needing to adjust the angle between the first blackboard body 4, the 3rd blackboard body 6 and perpendicular, drive mechanism band can be utilized
Them are moved to rotate.
First rotating shaft 16 is driven to rotate using the first rotational handle 22, first rotating shaft 16 passes through third round tooth, second gear teeth
Drive the first movable block 15 to be moved along the 4th frame to the direction of the first tumbler 12, coordinate first connecting rod 13, second connecting rod 14 will
First tumbler 12 jacks up, and allows the first blackboard body 4 to be rotated centered on first support bar 1, and then adjusts the first blackboard body 4
Angle between perpendicular.
The second rotating shaft 21 is driven to rotate using the second rotational handle 23, the second rotating shaft 21 passes through the 5th gear teeth, fourth round tooth
Drive the second movable block 20 to be moved along the 4th frame to the direction of the second tumbler 17, coordinate third connecting rod 18, fourth link 19 will
Second tumbler 17 jacks up, and allows the 3rd blackboard body 6 to be rotated centered on the 3rd support bar 3, and then adjusts the 3rd blackboard body 6
Angle between perpendicular.
The student that diverse location can preferably be adapted to is observed, better adaptability, avoid it is reflective caused by influence, religion
It is more convenient to learn.
Drive second gear 10 to rotate using handle 11, drive screw mandrel 8 to rotate by first gear 9, and then drive second
Blackboard body 5 vertically moves, and adjusts the height of the second blackboard body 5, is easy to teacher to impart knowledge to students.
Drive supporting plate 25 to move using power unit 27, the font in the second blackboard body 5 is removed using bristle 26.When
Bristle 26 can produce substantial amounts of dust when being rubbed with chalk font, using induced-draught fan 30, connecting tube to the cavity volume in supporting plate 25
29 air draughts, dust enter in cavity volume 29 by air suction opening 28, then discharged by induced-draught fan 30, so as to prevent dust disorderly to fly,
The content of chalk dust in air is reduced, has beautified teaching environment, has reduced environmental pollution.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (8)
1. a kind of avoid reflective blackboard, it is characterised in that including framework, first support bar, second support bar, the 3rd support
Bar, the first blackboard body, the second blackboard body, the 3rd blackboard body, drive mechanism；
Framework includes the first frame, the second frame, the 3rd frame, the 4th frame, the first frame, the second frame, the 3rd frame, the
Four frames are sequentially arranged, and the first frame and the 3rd frame are positioned opposite, and the first frame is arranged vertically with the 3rd frame；Second side
Frame and the 4th frame are positioned opposite, and the second frame is placed in the top of the 4th frame, and the second frame and the 4th frame are horizontally disposed；
The length direction of first support bar, second support bar, the 3rd support bar along the second frame is sequentially arranged, first support bar,
Second support bar, the 3rd support bar arrange that first support bar, the first end of the 3rd support bar rotate with the second frame vertically
Connection, first support bar, the second end of the 3rd support bar are rotatablely connected with the 4th frame, the first end of second support bar and the
Two frames are connected, and the second end of second support bar is connected with the 4th frame；
First blackboard body, the second blackboard body, the 3rd blackboard body are separately mounted to first support bar, second support bar,
On three support bars；
Drive mechanism is used to drive the first blackboard body and/or the 3rd blackboard body to rotate；
Drive mechanism includes the first drive division, the second drive division；
First drive division includes the first tumbler, first connecting rod, second connecting rod, the first movable block, first rotating shaft；First tumbler
In the first blackboard body, first connecting rod is placed in side of first tumbler away from the first frame, and the first of first connecting rod
End is rotatablely connected with the 4th frame, and the second end of first connecting rod is rotatablely connected with the first tumbler, the first end of second connecting rod with
First tumbler is rotatablely connected, and the second end and the first movable block of second connecting rod are rotatablely connected, and the first movable block is placed in first turn
For moving part close to the side of the first frame, the first movable block and the removable connection of the 4th frame, it is logical that the first movable block is provided with first
Hole, the axis of first through hole is parallel with the length direction of the 4th frame, and the inner circumferential surface of first through hole is provided with second gear teeth；The
The length direction of one rotating shaft and the 4th frame are arranged in parallel, and first rotating shaft is rotatablely connected with the first frame, one end of first rotating shaft
It is placed in first through hole, the peripheral surface of first rotating shaft is provided with the third round tooth being meshed with second gear teeth；
Second drive division includes the second tumbler, third connecting rod, fourth link, the second movable block, the second rotating shaft；Second tumbler
In the 3rd blackboard body, third connecting rod is placed in side of second tumbler away from the 3rd frame, and the first of third connecting rod
End is rotatablely connected with the 4th frame, and the second end of third connecting rod is rotatablely connected with the second tumbler, the first end of fourth link with
Second tumbler is rotatablely connected, and the second end and the second movable block of fourth link are rotatablely connected, and the second movable block is placed in second turn
For moving part close to the side of the 3rd frame, the second movable block and the removable connection of the 4th frame, it is logical that the second movable block is provided with second
Hole, the axis of the second through hole is parallel with the length direction of the 4th frame, and the inner circumferential surface of the second through hole is provided with fourth round tooth；The
The length direction of two rotating shafts and the 4th frame are arranged in parallel, and the second rotating shaft is rotatablely connected with the 3rd frame, one end of the second rotating shaft
It is placed in the second through hole, the peripheral surface of the second rotating shaft is provided with the 5th gear teeth being meshed with fourth round tooth.
2. reflective blackboard is avoided according to claim 1, it is characterised in that the back side of the second blackboard body is provided with the first round
Tooth, first gear teeth are arranged in a vertical direction；
Second blackboard body and the removable connection of second support bar；
Also including screw mandrel, screw mandrel is placed in the second blackboard body and is arranged in parallel close to the side at its back side, screw mandrel with second support bar,
Screw mandrel and the 4th frame are rotatablely connected, screw mandrel and above-mentioned first gear teeth meshing.
3. reflective blackboard is avoided according to claim 2, it is characterised in that also including first gear, second gear, first
Gear is arranged on screw mandrel, and second gear is rotatably installed on the 4th frame, and second gear is placed in the side of first gear, and second
Gear engages with first gear, and the radius of second gear is more than the radius of first gear.
4. reflective blackboard is avoided according to claim 3, it is characterised in that be also arranged on the second tooth including handle, handle
On wheel.
5. reflective blackboard is avoided according to claim 1, it is characterised in that the first drive division also includes first and rotates hand
Handle, the first rotational handle are arranged in first rotating shaft；
Second drive division also includes the second rotational handle, and the second rotational handle is arranged in the second rotating shaft.
6. reflective blackboard is avoided according to claim 1, it is characterised in that the second blackboard body front is provided with guide rail,
Guide rail is arranged vertically；
Also include supporting plate, bristle, power unit, supporting plate horizontally or diagonally arranges that supporting plate is placed in the second blackboard body and leaned on
Its nearly positive side, supporting plate and the removable connection of guide rail；
Bristle is arranged on supporting plate close to the side of the second blackboard body；
Power unit is used to drive supporting plate to move along the length direction of guide rail.
7. reflective blackboard is avoided according to claim 6, it is characterised in that supporting plate is close to the side of the second blackboard body
Provided with multiple air suction openings, cavity volume is provided with supporting plate, above-mentioned multiple air suction openings connect with cavity volume；
Also include induced-draught fan, connecting tube, induced-draught fan is connected by connecting tube with cavity volume.
8. avoid reflective blackboard according to claim 7, it is characterised in that the aperture of air suction opening from the second blackboard body to
Direction away from the second blackboard body is gradually reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229075.6A CN105882244B (en) | 2016-04-12 | 2016-04-12 | It is a kind of to avoid reflective blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229075.6A CN105882244B (en) | 2016-04-12 | 2016-04-12 | It is a kind of to avoid reflective blackboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105882244A CN105882244A (en) | 2016-08-24 |
| CN105882244B true CN105882244B (en) | 2017-11-21 |
Family
ID=56703761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610229075.6A Expired - Fee Related CN105882244B (en) | 2016-04-12 | 2016-04-12 | It is a kind of to avoid reflective blackboard |
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| CN (1) | CN105882244B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108248251B (en) * | 2018-01-30 | 2019-12-10 | 临沂华标教学设备有限公司 | Adjustable blackboard for teaching blackboard newspaper |
| CN108790498A (en) * | 2018-08-30 | 2018-11-13 | 深圳市有钱科技有限公司 | Intake type blackboard |
| CN113511021A (en) * | 2021-05-27 | 2021-10-19 | 浙江工业职业技术学院 | Blackboard with light and projection function |
| CN115131998A (en) * | 2022-07-25 | 2022-09-30 | 广东瑞有科技股份有限公司 | Wireless concatenation electronic blackboard |
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| CN203832079U (en) * | 2014-05-12 | 2014-09-17 | 湖南工业大学 | Turnover blackboard |
| CN204095352U (en) * | 2014-10-13 | 2015-01-14 | 西安交通大学城市学院 | Double-sided overturn type environment friendly blackboard |
| CN204222467U (en) * | 2014-11-18 | 2015-03-25 | 北京信息科技大学 | A kind of reflection-proof and adjustable for height blackboard |
-
2016
- 2016-04-12 CN CN201610229075.6A patent/CN105882244B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH047200A (en) * | 1990-04-25 | 1992-01-10 | Kokuyo Co Ltd | Blackboard apparatus |
| CN201124672Y (en) * | 2007-11-28 | 2008-10-01 | 胡龙 | Anti-reflecting angle-adjustable blackboard |
| CN201231625Y (en) * | 2008-07-30 | 2009-05-06 | 温洋 | Blackboard capable of automatic clearing chalk dust |
| CN202413113U (en) * | 2012-01-10 | 2012-09-05 | 葛雪婷 | Anti-reflecting blackboard |
| CN203832079U (en) * | 2014-05-12 | 2014-09-17 | 湖南工业大学 | Turnover blackboard |
| CN204095352U (en) * | 2014-10-13 | 2015-01-14 | 西安交通大学城市学院 | Double-sided overturn type environment friendly blackboard |
| CN204222467U (en) * | 2014-11-18 | 2015-03-25 | 北京信息科技大学 | A kind of reflection-proof and adjustable for height blackboard |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105882244A (en) | 2016-08-24 |
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Granted publication date: 20171121 Termination date: 20190412 |