CN105034664A - Canvas scroll type blackboard - Google Patents
Canvas scroll type blackboard Download PDFInfo
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- CN105034664A CN105034664A CN201510479805.3A CN201510479805A CN105034664A CN 105034664 A CN105034664 A CN 105034664A CN 201510479805 A CN201510479805 A CN 201510479805A CN 105034664 A CN105034664 A CN 105034664A
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- spool
- hairbrush
- canvas
- motor
- black
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Abstract
The invention belongs to the technical field of teaching equipment and relates to a blackboard, in particular to a canvas scroll type blackboard. The canvas scroll type blackboard comprises a left hairbrush assembly, a right hairbrush assembly, a left scroll assembly, a right scroll assembly, a left button, a right button, black canvases, and a power supply positive pole and a power supply negative pole of a direct-current power supply. On the one hand, a scroll motor is combined with an electromagnetic clutch to drive a scroll so that the black canvas full of letters can be wound around the scroll; on the other hand, a hairbrush motor continuously drives a hairbrush roller to rotate at a high speed to remove the chalk letters on the black canvas; the black canvas on the other scroll is pulled to form a flattened section, and thus chalk letters can be written on the black canvas. The blackboard is erased automatically, the time and labor in erasing the blackboard are saved, chalk dust inhaled into the bodies of teachers and students is reduced, and the damage to the bodies is reduced.
Description
Technical field
The invention belongs to teaching equipment technical field, relate to a kind of blackboard, be specifically related to a kind of canvas Scroll blackboard.
Background technology
Traditional blackboard is the cement plate fixing block one piece of black on the wall of classroom, or fixes one piece of plank, glass plate, and after teacher writes full word on blackboard, content above wiped by use blackboard eraser, more again writes.Instructional blocks of time erases the board, and the time of waste teachers and students, if erase the board cost two points of kinds at every turn, there are 50 teachers and students in full class, adds up and will waste 100 points of kinds, and the whole of China so much academics and students is losing time every day like this; The chalk powder flown upward in air also easily by teachers and students' suction body, works the mischief to health, but does not up to the present also better select.
Also someone creates dust-free black board eraser, and that also can only solve a part of problem, and the problem of losing time still can not solve.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, adapt to reality need, provide a kind of can automatic blackboard cleaning, the canvas Scroll blackboard of chalk powder that also do not fly upward.
The present invention is achieved through the following technical solutions:
A kind of canvas Scroll blackboard, comprises left brush member, right brush member, left reel assembly, right reel assembly, left button, right button, black canvas, the positive source of dc source and power cathode;
Left reel assembly comprises left spool bearing, left electromagnetic clutch, left reel motor and left spool, left spool and left spool bearing composition revolute pair, left spool bearing is fixedly connected on wall, one end of left reel motor and left spool is connected by left electromagnetic clutch, and left reel motor is fixedly connected by motor rack and wall;
Right reel assembly comprises right spool bearing, right electromagnetic clutch, right reel motor and right spool, right spool and right spool bearing composition revolute pair, right spool bearing is fixedly connected on wall, one end of right reel motor and right spool is connected by right electromagnetic clutch, and right reel motor is fixedly connected by motor rack and wall;
Left brush member comprises left hairbrush bearing, left hairbrush and left hair brush motor, left hairbrush is a roll body, be fixed with many bristles around, left hairbrush bearing and left hairbrush are connected by revolute pair, left hair brush motor and left hairbrush are connected by shaft coupling, and left hair brush motor is fixedly connected by support and wall;
Right brush member comprises right hairbrush bearing, right hairbrush and right hair brush motor, right hairbrush is a roll body, be fixed with many bristles around, right hairbrush bearing and right hairbrush are connected by revolute pair, right hair brush motor and right hairbrush are connected by shaft coupling, and right hair brush motor is fixedly connected by support and wall;
Black canvas two ends are fixed respectively and are curled up on left spool and right spool, have the black canvas that a section flattens, can write letter written with chalk above between left spool and right spool;
Bristle on left hairbrush is close to the black canvas be wound on left spool; Bristle on right hairbrush is close to the black canvas be wound on right spool;
Left button comprises two to the contact linked, and is left normally open contact and left normally closed interlock respectively;
Right button comprises two to the contact linked, and is right normally open contact and right normally closed interlock respectively;
Left hair brush motor, left reel motor and left electromagnetic clutch parallel connection obtain the first circuit, and the first circuit obtains second circuit, second circuit one end joining power positive pole, other end joining power negative pole with right normally closed interlock, the series connection of left normally open contact again;
Right hair brush motor, right reel motor and right electromagnetic clutch parallel connection obtain tertiary circuit, and tertiary circuit obtains the 4th circuit, the 4th circuit on one side joining power positive pole, other end joining power negative pole with left normally closed interlock, the series connection of right normally open contact again.
In use, press left button, then left normally closed interlock becomes disconnection from closed, then can ensure that the 4th circuit disconnects, right electromagnetic clutch is in does not have "on" position, and right reel motor and right spool are not linked together, right spool by the restriction of right reel motor, can freely not rotate;
Left normally open contact is become closed from off-state, first and second circuit are "on" positions, left hair brush motor, left reel motor and left electromagnetic clutch simultaneously electric, left electromagnetic clutch makes left reel motor and left spool be linked together, the left spool of left reel motor rotating drive rotates, drive black canvas to be wound on left spool, right spool rotates passively releases black canvas; Left hair brush motor ceaselessly drives left hairbrush High Rotation Speed, and the writing that black canvas is write ceaselessly scrubbed by left hairbrush, and the black canvas through scrubbing is surperficial without writing;
Until this section that writes full word black canvas is all around on left spool, then decontrol left button, left normally open contact reverts to off-state, left normally closed interlock reverts to closure state, left hair brush motor, left reel motor and left electromagnetic clutch be dead electricity simultaneously, black canvas is static to get off, and can write again above;
Etc. writing this blackboard, again press left button, then repeat step above, left reel motor drives the black canvas of left reel wound, and left hair brush motor scrubs the writing that black canvas is write simultaneously; Until black canvas all curls up on left spool;
Can by right button when re-using, then right normally closed interlock becomes disconnection from closed, then can ensure that second circuit disconnects, left electromagnetic clutch is in does not have "on" position, left reel motor and left spool are not linked together, and left spool by the restriction of left reel motor, can freely not rotate;
Right normally open contact is become closed from off-state, three, the 4th circuit is "on" position, right hair brush motor, right reel motor and right electromagnetic clutch simultaneously electric, right electromagnetic clutch makes right reel motor and right spool be linked together, the right spool of right reel motor rotating drive rotates, drive black canvas to be wound on right spool, left spool rotates passively releases black canvas; Right hair brush motor ceaselessly drives right hairbrush High Rotation Speed, and the writing that black canvas is write ceaselessly scrubbed by right hairbrush, and the black canvas through scrubbing is surperficial without writing;
Until this section that writes full word black canvas is all around on right spool, then decontrol right button, right normally open contact reverts to off-state, right normally closed interlock reverts to closure state, right hair brush motor, right reel motor and right electromagnetic clutch be dead electricity simultaneously, black canvas is static to get off, and can write again above;
Etc. writing this blackboard, then press right button, then repeat step above, right reel motor drives the black canvas of right reel wound, and right hair brush motor scrubs the writing that black canvas is write simultaneously; Until black canvas all curls up on right spool.
More than mention the black canvas having a section to flatten between left spool and right spool, it is characterized in that flatten black canvas after be provided with backing plate, backing plate is fixed on wall, had backing plate be supported on black canvas writes more convenient.
Above-mentioned left brush member, characterized by further comprising left cover, left brush hood inside, the chalk powder produced when black canvas scrubbed by left hairbrush flies upward in atmosphere, being housed in left cover the inside can not to external diffusion, finally get off along the inwall landing of left cover, can effectively avoid neighbouring teachers and students in chalk powder suction body.
Same, right brush member also comprises right cover, has same effect right brush hood inside.
Beneficial effect of the present invention: erase the board automation, saves the time and work that erase the board, reduces the chalk powder in teachers and students' suction body, alleviate the harm to health.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure schematic diagram of the embodiment of the present invention;
Fig. 2 is the front view of the embodiment of the present invention;
Fig. 3 is the sectional view along A-A line in Fig. 2;
Fig. 4 is the sectional view along B-B line in Fig. 2;
Fig. 5 is the sectional view along C-C line in Fig. 2;
Fig. 6 is the circuit interconnect pattern of the embodiment of the present invention;
Shown in figure: 1. left brush member; 11. left hairbrush bearings; 12. left hairbrush; 13. left hair brush motor; 14. left covers; 2. right brush member; 21. right hairbrush bearings; 22. right hairbrush; 23. right hair brush motor; 24. right covers; 3. left reel assembly; 31. left spool bearings; 32. left electromagnetic clutch; 33. left reel motors; 34. left spools; 4. right reel assembly; 41. right spool bearings; 42. right electromagnetic clutch; 43. right reel motors; 44. right spools; 5. left button; 51. left normally open contacts; 52. left normally closed interlocks; 6. right button; 61 right normally open contacts; 62. right normally closed interlocks; 7. black canvas; 8. backing plate; 91. positive sources; 92. power cathodes.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
Embodiment: see Fig. 1 to Fig. 6.
A kind of canvas Scroll blackboard, comprises left brush member 1, right brush member 2, left reel assembly 3, right reel assembly 4, left button 5, right button 6, black canvas 7, the positive source 91 of dc source and power cathode 92;
Left reel assembly 3 comprises left spool bearing 31, left electromagnetic clutch 32, left reel motor 33 and left spool 34, left spool 34 and left spool bearing 31 form revolute pair, left spool bearing 31 is fixedly connected on wall, one end of left reel motor 33 and left spool 34 is connected by left electromagnetic clutch 32, and left reel motor 33 is fixedly connected by motor rack and wall;
Right reel assembly 4 comprises right spool bearing 41, right electromagnetic clutch 42, right reel motor 43 and right spool 44, right spool 44 and right spool bearing 41 form revolute pair, right spool bearing 41 is fixedly connected on wall, one end of right reel motor 43 and right spool 44 is connected by right electromagnetic clutch 42, and right reel motor 43 is fixedly connected by motor rack and wall;
Left brush member 1 comprises left hairbrush bearing 11, left hairbrush 12 and left hair brush motor 13, left hairbrush 12 is roll bodies, be fixed with many bristles around, left hairbrush bearing 11 and left hairbrush 12 are connected by revolute pair, left hair brush motor 13 and left hairbrush 12 are connected by shaft coupling, and left hair brush motor 13 is fixedly connected by support and wall;
Right brush member 1 comprises right hairbrush bearing 21, right hairbrush 22 and right hair brush motor 23, right hairbrush 22 is roll bodies, be fixed with many bristles around, right hairbrush bearing 21 and right hairbrush 22 are connected by revolute pair, right hair brush motor 23 and right hairbrush 22 are connected by shaft coupling, and right hair brush motor 23 is fixedly connected by support and wall;
Black canvas 7 two ends are fixed respectively and are curled up on left spool 34 and right spool 44, and the black canvas 7 having a section to flatten between left spool 34 and right spool 44, can write letter written with chalk above;
Bristle on left hairbrush 12 is close to the black canvas 7 be wound on left spool 34; Bristle on right hairbrush 22 is close to the black canvas 7 be wound on right spool 44;
Left button 5 comprises two to the contact linked, and is left normally open contact 51 and left normally closed interlock 52 respectively;
Right button 6 comprises two to the contact linked, and is right normally open contact 61 and right normally closed interlock 62 respectively;
Left hair brush motor 13, left reel motor 33 and left electromagnetic clutch 32 parallel connection obtain the first circuit, then obtain second circuit, second circuit one end joining power positive pole 91, other end joining power negative pole 92 with right normally closed interlock 62, left normally open contact 51 series connection;
Right hair brush motor 23, right reel motor 43 and right electromagnetic clutch 42 parallel connection obtain tertiary circuit, then obtain the 4th circuit, the 4th circuit on one side joining power positive pole 91, other end joining power negative pole 92 with left normally closed interlock 52, right normally open contact 61 series connection.
In use, press left button 5, then left normally closed interlock 52 becomes disconnection from closed, then can ensure that the 4th circuit disconnects, right electromagnetic clutch 42 is in does not have "on" position, right reel motor 43 and right spool 44 are not linked together, and right spool 44 by the restriction of right reel motor 43, can freely not rotate;
Left normally open contact 51 is become closed from off-state, first, second circuit is "on" position, left hair brush motor 13, left reel motor 33 and left electromagnetic clutch 32 simultaneously electric, left electromagnetic clutch 32 makes left reel motor 33 and left spool 34 be linked together, the left spool 34 of left reel motor 33 rotating drive rotates, drive black canvas 7 to be wound on left spool 34, right spool 44 rotates passively releases black canvas 7; Left hair brush motor 13 ceaselessly drives left hairbrush 12 High Rotation Speed, and the writing that black canvas 7 is write ceaselessly scrubbed by left hairbrush 12, and black canvas 7 surface that process is scrubbed is without writing;
Until this section that writes full word black canvas 7 is all around on left spool 34, then decontrol left button 5, left normally open contact 51 reverts to off-state, left normally closed interlock 52 reverts to closure state, left hair brush motor 13, left reel motor 33 and left electromagnetic clutch 32 be dead electricity simultaneously, black canvas 7 is static to get off, and can write again above;
Etc. writing this blackboard, then press left button 5, then repeat step above, left reel motor 33 drives left spool 34 to reel black canvas 7, and left hair brush motor 13 scrubs the writing that black canvas 7 is write simultaneously; Until black canvas 7 all curls up on left spool 34;
Can by right button 6 when re-using, then right normally closed interlock 62 becomes disconnection from closed, then can ensure that the first circuit disconnects, left electromagnetic clutch 32 is in does not have "on" position, left reel motor 33 and left spool 34 are not linked together, left spool 34 by the restriction of left reel motor 33, can freely not rotate;
Right normally open contact 61 is become closed from off-state, three, the 4th circuit is "on" position, right hair brush motor 23, right reel motor 43 and right electromagnetic clutch 42 simultaneously electric, right electromagnetic clutch 42 makes right reel motor 43 and right spool 44 be linked together, the right spool 44 of right reel motor 43 rotating drive rotates, drive black canvas 7 to be wound on right spool 44, left spool 34 rotates passively releases black canvas 7; Right hair brush motor 23 ceaselessly drives right hairbrush 22 High Rotation Speed, and the writing that black canvas 7 is write ceaselessly scrubbed by right hairbrush 22, and black canvas 7 surface that process is scrubbed is without writing;
Until this section that writes full word black canvas 7 is all around on right spool 44, then decontrol right button 6, right normally open contact 61 reverts to off-state, right normally closed interlock 62 reverts to closure state, right hair brush motor 23, right reel motor 43 and right electromagnetic clutch 42 be dead electricity simultaneously, black canvas 7 is static to get off, and can write again above;
Etc. writing this blackboard, then press right button 6, then repeat step above, right reel motor 43 drives right spool 44 to reel black canvas 7, and right hair brush motor 23 scrubs the writing that black canvas 7 is write simultaneously; Until black canvas 7 all curls up on right spool 44.
More than mention the black canvas 7 having a section to flatten between left spool 34 and right spool 44, it is characterized in that the black canvas 7 flattened below is provided with backing plate 8, had backing plate 8 be supported on black canvas 7 writes more convenient.
Above-mentioned left brush member 1, characterized by further comprising left cover 14, left hairbrush 12 is covered on the inside, the chalk powder produced when black canvas 7 scrubbed by left hairbrush 12 flies upward in atmosphere, being housed in can not to external diffusion inside left cover 14, finally get off along the inwall landing of left cover 14, can effectively avoid neighbouring teachers and students in chalk powder suction body.
Same, right brush member 2 also comprises right cover 24, right hairbrush 22 is covered on the inside, has same effect.
The beneficial effect of the present embodiment: erase the board automation, saves the time and work that erase the board, reduces the chalk powder in teachers and students' suction body, alleviate the harm to health.
Claims (4)
1. canvas Scroll blackboard, is characterized in that comprising left brush member, right brush member, left reel assembly, right reel assembly, left button, right button, black canvas, the positive source of dc source and power cathode;
Left reel assembly comprises left spool bearing, left electromagnetic clutch, left reel motor and left spool, left spool and left spool bearing composition revolute pair, left spool bearing is fixedly connected on wall, one end of left reel motor and left spool is connected by left electromagnetic clutch, and left reel motor is fixedly connected by motor rack and wall;
Right reel assembly comprises right spool bearing, right electromagnetic clutch, right reel motor and right spool, right spool and right spool bearing composition revolute pair, right spool bearing is fixedly connected on wall, one end of right reel motor and right spool is connected by right electromagnetic clutch, and right reel motor is fixedly connected by motor rack and wall;
Left brush member comprises left hairbrush bearing, left hairbrush and left hair brush motor, left hairbrush is a roll body, be fixed with many bristles around, left hairbrush bearing and left hairbrush are connected by revolute pair, left hair brush motor and left hairbrush are connected by shaft coupling, and left hair brush motor is fixedly connected by support and wall;
Right brush member comprises right hairbrush bearing, right hairbrush and right hair brush motor, right hairbrush is a roll body, be fixed with many bristles around, right hairbrush bearing and right hairbrush are connected by revolute pair, right hair brush motor and right hairbrush are connected by shaft coupling, and right hair brush motor is fixedly connected by support and wall;
Black canvas two ends are fixed respectively and are curled up on left spool and right spool, have the black canvas that a section flattens between left spool and right spool;
Bristle on left hairbrush is close to the black canvas be wound on left spool; Bristle on right hairbrush is close to the black canvas be wound on right spool;
Left button comprises two to the contact linked, and is left normally open contact and left normally closed interlock respectively;
Right button comprises two to the contact linked, and is right normally open contact and right normally closed interlock respectively;
Left hair brush motor, left reel motor and left electromagnetic clutch parallel connection obtain the first circuit, and the first circuit obtains second circuit, second circuit one end joining power positive pole, other end joining power negative pole with right normally closed interlock, the series connection of left normally open contact again;
Right hair brush motor, right reel motor and right electromagnetic clutch parallel connection obtain tertiary circuit, and tertiary circuit obtains the 4th circuit, the 4th circuit on one side joining power positive pole, other end joining power negative pole with left normally closed interlock, the series connection of right normally open contact again.
2. canvas Scroll blackboard according to claim 1, it is characterized in that flatten black canvas after be provided with backing plate, backing plate is fixed on wall.
3. canvas Scroll blackboard according to claim 1 and 2, characterized by further comprising left cover, left brush hood inside.
4. canvas Scroll blackboard according to claim 1 and 2, characterized by further comprising right cover, right brush hood inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479805.3A CN105034664B (en) | 2015-08-07 | 2015-08-07 | canvas scroll type blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510479805.3A CN105034664B (en) | 2015-08-07 | 2015-08-07 | canvas scroll type blackboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105034664A true CN105034664A (en) | 2015-11-11 |
| CN105034664B CN105034664B (en) | 2017-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510479805.3A Expired - Fee Related CN105034664B (en) | 2015-08-07 | 2015-08-07 | canvas scroll type blackboard |
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| Country | Link |
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| CN (1) | CN105034664B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106364230A (en) * | 2016-09-20 | 2017-02-01 | 广东技术师范学院 | Full-automatic teaching blackboard |
| CN106608132A (en) * | 2016-10-08 | 2017-05-03 | 徐扬杰 | Recyclable blackboard device capable of achieving automatic cleaning |
| CN107139607A (en) * | 2016-11-10 | 2017-09-08 | 赵丽玫 | The writing on the blackboard soft plastic plate that horizontal coiling refreshes |
| CN107487112A (en) * | 2017-04-11 | 2017-12-19 | 廖伟登 | The speciality type flexible glue writing whiteboard of left and right spool structure |
| CN108146114A (en) * | 2018-01-05 | 2018-06-12 | 彭钰雯 | A kind of roll type multifunctional environment friendly blackboard |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160983U (en) * | 1985-02-28 | 1986-10-06 | ||
| JPS63132786U (en) * | 1987-02-20 | 1988-08-30 | ||
| JPS6411789U (en) * | 1987-07-14 | 1989-01-23 | ||
| CN2144058Y (en) * | 1992-12-21 | 1993-10-20 | 梁凯旋 | Blackboard capable of automatically rotating and erasing dust |
| CN1228372A (en) * | 1998-03-11 | 1999-09-15 | 易雪元 | Belt type blackboard |
| CN2344188Y (en) * | 1998-11-25 | 1999-10-20 | 樊成仁 | Automatic turning dust-removing blackboard |
| CN1253081A (en) * | 1998-11-11 | 2000-05-17 | 黄上原 | Shift-type writing board |
| CN2383691Y (en) * | 1999-08-05 | 2000-06-21 | 詹耀邦 | Classroom blackboard with automatic wiping and chalk dust-absorbing structure |
| CN2400288Y (en) * | 1999-09-24 | 2000-10-11 | 崔宝科 | Automatic dust-removing blackboard capable of storing content |
| CN2433090Y (en) * | 2000-02-23 | 2001-06-06 | 葛怀炜 | Blackboard with automatic dust removing and movable plate |
| CN2635384Y (en) * | 2003-07-03 | 2004-08-25 | 李荣亮 | Electric dustless backboard |
| CN2785873Y (en) * | 2005-03-30 | 2006-06-07 | 山东大学 | Environment friendly full-automatic track type multifunctional blackboard |
| CN2790796Y (en) * | 2005-04-06 | 2006-06-28 | 姚宝林 | Electric-controlled screen-type writing device |
| CN201192958Y (en) * | 2008-05-15 | 2009-02-11 | 上海市宝山区青少年科学技术指导站 | Blackboard |
| CN101585283A (en) * | 2009-06-18 | 2009-11-25 | 华东师范大学 | Electric erasing type dustfree soft blackboard |
| CN201432514Y (en) * | 2009-06-18 | 2010-03-31 | 华东师范大学 | Electric erasing type dust-free soft blackboard |
| CN202098179U (en) * | 2011-06-13 | 2012-01-04 | 山东科技大学 | Writing and cleaning integrated blackboard |
| CN103832159A (en) * | 2013-11-28 | 2014-06-04 | 盐城工业职业技术学院 | Conveying belt type electric tablet |
-
2015
- 2015-08-07 CN CN201510479805.3A patent/CN105034664B/en not_active Expired - Fee Related
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160983U (en) * | 1985-02-28 | 1986-10-06 | ||
| JPS63132786U (en) * | 1987-02-20 | 1988-08-30 | ||
| JPS6411789U (en) * | 1987-07-14 | 1989-01-23 | ||
| CN2144058Y (en) * | 1992-12-21 | 1993-10-20 | 梁凯旋 | Blackboard capable of automatically rotating and erasing dust |
| CN1228372A (en) * | 1998-03-11 | 1999-09-15 | 易雪元 | Belt type blackboard |
| CN1253081A (en) * | 1998-11-11 | 2000-05-17 | 黄上原 | Shift-type writing board |
| CN2344188Y (en) * | 1998-11-25 | 1999-10-20 | 樊成仁 | Automatic turning dust-removing blackboard |
| CN2383691Y (en) * | 1999-08-05 | 2000-06-21 | 詹耀邦 | Classroom blackboard with automatic wiping and chalk dust-absorbing structure |
| CN2400288Y (en) * | 1999-09-24 | 2000-10-11 | 崔宝科 | Automatic dust-removing blackboard capable of storing content |
| CN2433090Y (en) * | 2000-02-23 | 2001-06-06 | 葛怀炜 | Blackboard with automatic dust removing and movable plate |
| CN2635384Y (en) * | 2003-07-03 | 2004-08-25 | 李荣亮 | Electric dustless backboard |
| CN2785873Y (en) * | 2005-03-30 | 2006-06-07 | 山东大学 | Environment friendly full-automatic track type multifunctional blackboard |
| CN2790796Y (en) * | 2005-04-06 | 2006-06-28 | 姚宝林 | Electric-controlled screen-type writing device |
| CN201192958Y (en) * | 2008-05-15 | 2009-02-11 | 上海市宝山区青少年科学技术指导站 | Blackboard |
| CN101585283A (en) * | 2009-06-18 | 2009-11-25 | 华东师范大学 | Electric erasing type dustfree soft blackboard |
| CN201432514Y (en) * | 2009-06-18 | 2010-03-31 | 华东师范大学 | Electric erasing type dust-free soft blackboard |
| CN202098179U (en) * | 2011-06-13 | 2012-01-04 | 山东科技大学 | Writing and cleaning integrated blackboard |
| CN103832159A (en) * | 2013-11-28 | 2014-06-04 | 盐城工业职业技术学院 | Conveying belt type electric tablet |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106364230A (en) * | 2016-09-20 | 2017-02-01 | 广东技术师范学院 | Full-automatic teaching blackboard |
| CN106608132A (en) * | 2016-10-08 | 2017-05-03 | 徐扬杰 | Recyclable blackboard device capable of achieving automatic cleaning |
| CN107139607A (en) * | 2016-11-10 | 2017-09-08 | 赵丽玫 | The writing on the blackboard soft plastic plate that horizontal coiling refreshes |
| CN107487112A (en) * | 2017-04-11 | 2017-12-19 | 廖伟登 | The speciality type flexible glue writing whiteboard of left and right spool structure |
| CN108146114A (en) * | 2018-01-05 | 2018-06-12 | 彭钰雯 | A kind of roll type multifunctional environment friendly blackboard |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105034664B (en) | 2017-01-18 |
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