CN105216495A - Manual monoblock type dry erasing writing board - Google Patents

Manual monoblock type dry erasing writing board Download PDF

Info

Publication number
CN105216495A
CN105216495A CN201510674980.8A CN201510674980A CN105216495A CN 105216495 A CN105216495 A CN 105216495A CN 201510674980 A CN201510674980 A CN 201510674980A CN 105216495 A CN105216495 A CN 105216495A
Authority
CN
China
Prior art keywords
clipboard
blackboard eraser
slide rail
line slide
plate
Prior art date
Application number
CN201510674980.8A
Other languages
Chinese (zh)
Other versions
CN105216495B (en
Inventor
何玉良
Original Assignee
石家庄科达文教用品有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 石家庄科达文教用品有限公司 filed Critical 石家庄科达文教用品有限公司
Priority to CN201510674980.8A priority Critical patent/CN105216495B/en
Publication of CN105216495A publication Critical patent/CN105216495A/en
Application granted granted Critical
Publication of CN105216495B publication Critical patent/CN105216495B/en

Links

Abstract

The invention discloses a kind of manual monoblock type dry erasing writing board, relate to clipboard technical field.The present invention includes clipboard body, also comprise the monoblock type blackboard eraser corresponding with clipboard body width and the carriage for making blackboard eraser move left and right, carriage comprises transverse moving mechanism, described transverse moving mechanism comprises the horizontal line slide rail of upper ledge and the lower frame being divided into clipboard body, transverse slider and horizontal line slide rail are slidably matched, the two ends of blackboard eraser are fixedly linked with upper and lower two transverse sliders respectively, promote blackboard eraser, blackboard eraser can move left and right along the length direction of clipboard body, the chalk trace on erasing writing plate entity plate face.Employing of the present invention and clipboard plate face, with wide one blackboard eraser, can realize the overall wiping to whole plate face, and wiping is fast, time saving and energy saving, greatly reduces dust from flying, improve efficiency of teaching.

Description

Manual monoblock type dry erasing writing board
Technical field
The present invention relates to clipboard technical field, specifically a kind of manual monoblock type dry erasing writing board.
Background technology
What adopt the wiping of protecting teaching writing board major part in the market is the mode of the direct wiping of common little blackboard eraser, during to the wiping of large area whole plate face, wiping amount is larger, wiping efficiency is low, the chalk dust from flying simultaneously produced in wiping process is serious, brings pole adverse influence to the health of teacher and front-seat student.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of manual monoblock type dry erasing writing board, and employing and clipboard plate face, with wide one blackboard eraser, can realize the overall wiping to whole plate face, wiping is fast, time saving and energy saving, greatly reduce dust from flying, improve efficiency of teaching.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of manual monoblock type dry erasing writing board, comprise clipboard body, also comprise the monoblock type blackboard eraser corresponding with clipboard body width and the carriage for making blackboard eraser move left and right, carriage comprises transverse moving mechanism, described transverse moving mechanism comprises the horizontal line slide rail of upper ledge and the lower frame being divided into clipboard body, transverse slider and horizontal line slide rail slide rail are slidably matched, the two ends of blackboard eraser are fixedly linked with upper and lower two transverse sliders respectively, promote blackboard eraser, blackboard eraser can move left and right along the length direction of clipboard body, chalk trace on erasing writing plate entity plate face.
Further technical scheme, described blackboard eraser comprises bar shaped blackboard eraser framework and is fixed on the bar shaped sponge of bar shaped blackboard eraser framework towards clipboard body side.
Further technical scheme, bar shaped blackboard eraser framework is provided with little board wiper box and chalk holder towards the lower end of side, classroom
Further technical scheme, described clipboard body is the double-deck clipboard of the formula that forward laps that energy left and right push-and-pull launches, and bottom clipboard is plug-type or fixed, and upper strata clipboard is plug-type, described carriage also comprises the longitudinal moving mechanism that blackboard eraser can be made movable, longitudinal moving mechanism is located at the outside of horizontal mobile device, longitudinal moving mechanism comprises two longitudinal line slide rails be fixedly linked with transverse slider respectively, the longitudinal line slide rail be connected with the transverse slider of clipboard body upper ledge is positioned at the top of described transverse slider, the longitudinal line slide rail be connected with the transverse slider of clipboard body lower frame is positioned at the below of described transverse slider, longitudinal line slide rail is slidably matched two longitudinal sliding blocks with two respectively, the track of longitudinal line slide rail is vertical with the plate face of clipboard, the two ends of blackboard eraser are fixedly linked with upper and lower two longitudinal sliding blocks respectively, promote blackboard eraser, blackboard eraser can transversely move left and right by line slide rail, and can longitudinally move forward and backward by line slide rail, written trace on erasing writing plate.
Further technical scheme, the frame that described horizontal line slide rail is corresponding with bottom clipboard is fixed together, and the length of horizontal line slide rail is equal with the length of bottom clipboard.
Further technical scheme, described blackboard eraser is connected by bending plate with between longitudinal sliding block, and one end of bending plate and the outside of bar shaped blackboard eraser framework are fixed, and other end bending is fixedly linked with the longitudinal sliding block being positioned at below.
Further technical scheme, the outside of horizontal line slide rail is coated with grooved cover, and the side of grooved cover and the upper and lower frames of clipboard are fixedly linked, and horizontal line slide rail is fixed on the bottom land of grooved cover, and the medial surface of bending plate can along the bottom land sliding outside of grooved cover.
The beneficial effect adopting technique scheme to produce is:
1, in the present invention, the blackboard eraser equal with clipboard width can be disposable the whole plate face wiped clean of clipboard under manual action, and wiping is fast, time saving and energy saving, greatly reduce dust from flying, substantially increase wiping efficiency, improve efficiency of teaching, reduce the labour intensity of teachers and students' blackboard wiping.
2, for double-deck clipboard, the length of horizontal line slide rail is equal with the length of one deck clipboard, and be fixed on the side of bottom clipboard, when needing the plate face of wiping upper strata clipboard, by longitudinal moving device make blackboard eraser move forward and backward, then upper strata clipboard push-and-pull to overlapping with bottom clipboard, the wiping of upper strata clipboard can be carried out, flexible and convenient to use, also save cost of manufacture simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the side view at A place in Fig. 1;
Fig. 4 is the structural representation of longitudinal line slide rail;
Fig. 5 is longitudinal sliding block;
Fig. 6 is the structural representation of horizontal line slide rail;
Fig. 7 is the structural representation of blackboard eraser;
Fig. 8 is the structural representation of bending plate;
Fig. 9 is the structural representation of little connecting plate;
In figure: 1, clipboard body; 2, blackboard eraser; 3, upper ledge; 4, horizontal line slide rail; 5, transverse slider; 6, longitudinal line slide rail; 7, longitudinal sliding block; 8, lower frame; 9, bar shaped blackboard eraser framework; 10, bar shaped sponge; 11, bending plate; 12, grooved cover; 13, little connecting plate.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
The present invention is made up of left and right length direction line slide rail and fore-and-aft direction line slide rail, one blackboard eraser.Left and right length direction moves the wiping that can realize plate face, the movable wiping that can realize two plate faces.
See shown in Fig. 1 to Fig. 9, the present invention includes clipboard body 1, the monoblock type blackboard eraser 2 corresponding with clipboard body 1 width and the carriage for making blackboard eraser 2 move left and right, carriage comprises transverse moving mechanism, described transverse moving mechanism comprises and is divided into the upper ledge 3 of clipboard body 1 and the horizontal line slide rail 4 of lower frame 12, the length of horizontal line slide rail 4 is corresponding with the length of clipboard body 1, transverse slider 5 and horizontal line slide rail slide rail 4 are slidably matched, the two ends of blackboard eraser 2 are fixedly linked with upper and lower two transverse sliders 5 respectively, promote blackboard eraser 2, blackboard eraser 2 can move left and right along the length direction of clipboard body 1, namely blackboard eraser can clip the other end from one end of clipboard always, now, when plate face is write full again, directly can wipe the other end from this end, or between clipboard two ends Anywhere, chalk trace on erasing writing plate body 1 plate face.For the clipboard of individual layer, adopt horizontal mobile device can realize moving left and right along clipboard body, longitudinal moving device can not be installed, certainly for the ease of the distance between adjustment blackboard eraser and clipboard, the dust on board wiper plane immediately can be known, also longitudinal moving mechanism can be installed.The outside of horizontal line slide rail 4 is coated with grooved cover 12, and the side of grooved cover 12 and the upper and lower frames of clipboard 1 are fixedly linked, and horizontal line slide rail 4 is fixed on the bottom land of grooved cover 12, and the medial surface of bending plate 11 can along the bottom land sliding outside of grooved cover 12.Wherein, grooved cover plays the effect of fixed lateral line slide rail 4, is also the protection to horizontal line slide rail.
Wherein, blackboard eraser 2 comprises bar shaped blackboard eraser framework 9 and is fixed on the bar shaped sponge 10 of bar shaped blackboard eraser framework 9 towards clipboard body 1 side.The shape and structure of blackboard eraser is identical with common little blackboard eraser, just extended length, and wherein the length of bar shaped sponge 10 will have the width in clipboard plate face equal, so that the vestige wiped clean at the edge of clipboard.The length of bar shaped sponge is equal with the width of clipboard, can be disposable just in time the chalk trace wiped clean in clipboard width range.Wherein, in the outside of bar shaped blackboard eraser framework 9, namely towards the lower end of the one side in classroom, be provided with chalk holder and little blackboard eraser holder, when the vestige that plate face is write is less, when being unworthy that employing overall long slab wipes, can with little blackboard eraser wiping, also be beneficial to the mode of unrestricted choice wiping as the case may be, use versatile and flexible, also meet time saving and energy saving object.
For the double-deck clipboard of the formula that forward laps that clipboard body 1 is the push-and-pull expansion of energy left and right, wherein, bottom clipboard is plug-type or fixed, and upper strata clipboard is plug-type, still can wiping during in order to make double-deck clipboard overlapping, need blackboard eraser in the distance longitudinally having a movement, namely a longitudinal moving mechanism is installed additional, longitudinal moving mechanism is located at the outside of transverse moving mechanism, longitudinal moving mechanism comprises two longitudinal line slide rails 6 be fixedly linked with transverse slider 5 respectively, the longitudinal line slide rail 6 be connected with the transverse slider 5 of clipboard body 1 upper ledge is positioned at the top of described transverse slider 5, the longitudinal line slide rail 6 be connected with the transverse slider 5 of clipboard body 1 lower frame is positioned at the below of described transverse slider 5, longitudinal line slide rail 6 is slidably matched two longitudinal sliding blocks 7 with two respectively, the track of longitudinal line slide rail 6 is vertical with the plate face of clipboard 1, the two ends of blackboard eraser 2 are fixedly linked with upper and lower two longitudinal sliding blocks 7 respectively, promote blackboard eraser 2, blackboard eraser 2 can transversely move left and right by line slide rail 4, and can longitudinally move forward and backward by line slide rail 6, written trace on erasing writing plate 1.For double-deck clipboard, the length of horizontal line slide rail is equal with the length of one deck clipboard, and be fixed on the side of bottom clipboard, push-and-pull upper strata clipboard or push-and-pull bottom clipboard all can not affect longitudinal line slide rail 6, when needing the plate face of wiping upper strata clipboard, by longitudinal moving device, blackboard eraser are moved forward and backward, then upper strata clipboard push-and-pull to overlapping with bottom clipboard, the wiping of upper strata clipboard can be carried out, flexible and convenient to use, also save cost of manufacture simultaneously.Certainly, for the double-deck clipboard of eclipsed form, the length of horizontal line slide rail also can equal clipboard launch after overall length, namely the length in the lower frame of the housing of the clipboard of entirety is equal, but need longitudinal moving mechanism, the lengthwise position of blackboard eraser is adjusted, like this, can be first that two-layer clipboard is overlapping during wiping, when wiping bottom clipboard, blackboard eraser is advanced to plate face, make blackboard eraser close adhesion plate face and erasable, when wiping upper strata clipboard, blackboard eraser longitudinally line slide rail 6 move backward, then the Ban Mianchu of upper strata clipboard is moved to the left or to the right, adjusting blackboard eraser again makes it be close to upper strata clipboard.
Wherein, be provided with little connecting plate 13 between longitudinal line slide rail 6 and transverse slider 5, little connecting plate 13 is fixed together with transverse slider 5, and longitudinal line slide rail 6 is fixed on below little connecting plate 13, is convenient to dismounting and assembling like this, is also convenient to processing.
Further instruction, the frame that described horizontal line slide rail 4 is corresponding with bottom clipboard is fixed together, and the length of horizontal line slide rail 4 is equal with the length of bottom clipboard.
Further optimization, is connected by bending plate 11 between blackboard eraser 2 with longitudinal sliding block 7, and one end of bending plate 11 and the outside of bar shaped blackboard eraser framework 9 are fixed, and other end bending is fixedly linked with the longitudinal sliding block 7 being positioned at below.Bending plate 11 and blackboard eraser and transverse slider or longitudinal sliding block are all bolted, and are convenient to dismounting.
Wherein, the outside of horizontal line slide rail 4 is coated with grooved cover 12, and the side of grooved cover 12 and the upper and lower frames of clipboard 1 are fixedly linked, and horizontal line slide rail 4 is fixed on the bottom land of grooved cover 12, and the medial surface of bending plate 11 can along the bottom land sliding outside of grooved cover 12.Grooved cover plays the effect of fixed lateral line slide rail 4, and the length of grooved cover is equal with the length of horizontal line slide rail or slightly long, is also the protection to horizontal line slide rail.
In the present invention, if carry out wiping to lamina face, just can there is no movable line slide rail, only need the line slide rail moved left and right, namely described horizontal mobile device.
If clipboard is the double-deck push-and-pull clipboard of 4 meters, lower frame that only need be long 2 meters, 2 meters of fixed head sides installs slide rail, the wiping to fixed head and portable plate can be realized, time portable plate needs wiping, shift fixed head position, right side onto, move forward and backward slide rail by blackboard eraser, move outside blackboard eraser, wiping can be carried out to movable plate plate face.
The present invention uses nimbly and freely, time saving and energy saving, substantially increases wiping efficiency simultaneously, improves efficiency of teaching, reduces the labour intensity of teachers and students' blackboard wiping.

Claims (7)

1. a manual monoblock type dry erasing writing board, comprise clipboard body (1), it is characterized in that, also comprise the monoblock type blackboard eraser (2) that adapts with clipboard body (1) width and the carriage for making blackboard eraser (2) move left and right, carriage comprises transverse moving mechanism, described transverse moving mechanism comprises the horizontal line slide rail (4) of upper ledge (3) and the lower frame (12) being divided into clipboard body (1), transverse slider (5) and horizontal line slide rail slide rail (4) are slidably matched, the two ends of blackboard eraser (2) are fixedly linked with upper and lower two transverse sliders (5) respectively, promote blackboard eraser (2), blackboard eraser (2) can move left and right along the length direction of clipboard body (1), chalk trace on erasing writing plate body (1) plate face.
2. manual monoblock type dry erasing writing board according to claim 1, is characterized in that, described blackboard eraser (2) comprises bar shaped blackboard eraser framework (9) and is fixed on the bar shaped sponge (10) of bar shaped blackboard eraser framework (9) towards clipboard body (1) side.
3. manual monoblock type dry erasing writing board according to claim 2, is characterized in that, bar shaped blackboard eraser framework (9) is provided with little board wiper box and chalk holder towards the lower end of side, classroom.
4. manual monoblock type dry erasing writing board according to claim 1, it is characterized in that, described clipboard body (1) is the double-deck clipboard of the formula that forward laps that energy left and right push-and-pull launches, and bottom clipboard is plug-type or fixed, and upper strata clipboard is plug-type, described carriage also comprises the longitudinal moving mechanism that blackboard eraser can be made movable, longitudinal moving mechanism is located at the outside of horizontal mobile device, longitudinal moving mechanism comprises two longitudinal line slide rails (6) be fixedly linked with transverse slider (5) respectively, the longitudinal line slide rail (6) be connected with the transverse slider (5) of clipboard body (1) upper ledge is positioned at the top of described transverse slider (5), the longitudinal line slide rail (6) be connected with the transverse slider (5) of clipboard body (1) lower frame is positioned at the below of described transverse slider (5), longitudinal line slide rail (6) is slidably matched two longitudinal sliding blocks (7) with two respectively, the track of longitudinal line slide rail (6) is vertical with the plate face of clipboard (1), the two ends of blackboard eraser (2) are fixedly linked with upper and lower two longitudinal sliding blocks (7) respectively, promote blackboard eraser (2), blackboard eraser (2) can transversely move left and right by line slide rail (4), and can longitudinally move forward and backward by line slide rail (6), written trace on erasing writing plate (1).
5. manual monoblock type dry erasing writing board according to claim 4, is characterized in that, the frame that described horizontal line slide rail (4) is corresponding with bottom clipboard is fixed together, and the length of horizontal line slide rail (4) is equal with the length of bottom clipboard.
6. manual monoblock type dry erasing writing board according to claim 4, it is characterized in that, described blackboard eraser (2) is connected by bending plate (11) with between longitudinal sliding block (7), one end of bending plate (11) and the outside of bar shaped blackboard eraser framework (9) are fixed, and other end bending is fixedly linked with the longitudinal sliding block (7) being positioned at below.
7. manual monoblock type dry erasing writing board according to claim 1, it is characterized in that, the outside of horizontal line slide rail (4) is coated with grooved cover (12), the side of grooved cover (12) and the upper and lower frames of clipboard body (1) are fixedly linked, horizontal line slide rail (4) is fixed on the bottom land of grooved cover (12), and the medial surface of bending plate (11) can along the bottom land sliding outside of grooved cover (12).
CN201510674980.8A 2015-10-19 2015-10-19 Manual integral dry wiping writing board CN105216495B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510674980.8A CN105216495B (en) 2015-10-19 2015-10-19 Manual integral dry wiping writing board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510674980.8A CN105216495B (en) 2015-10-19 2015-10-19 Manual integral dry wiping writing board

Publications (2)

Publication Number Publication Date
CN105216495A true CN105216495A (en) 2016-01-06
CN105216495B CN105216495B (en) 2017-01-25

Family

ID=54985919

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510674980.8A CN105216495B (en) 2015-10-19 2015-10-19 Manual integral dry wiping writing board

Country Status (1)

Country Link
CN (1) CN105216495B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109228745A (en) * 2018-10-23 2019-01-18 大连前海大象物联科技有限公司 A kind of sliding intelligent blackboard
CN109263367A (en) * 2018-10-23 2019-01-25 大连前海大象物联科技有限公司 A kind of parallel-moving type intelligent blackboard

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201291677Y (en) * 2008-10-16 2009-08-19 朱仕皓 Novel blackboard
CN202088735U (en) * 2011-06-14 2011-12-28 徐则达 Novel blackboard
CN202098179U (en) * 2011-06-13 2012-01-04 山东科技大学 Writing and cleaning integrated blackboard
CN202242633U (en) * 2011-10-21 2012-05-30 济南重工股份有限公司 Integrated blackboard eraser device
CN202463314U (en) * 2012-03-19 2012-10-03 张延美 Environment-friendly blackboard with overall chalk writing erasure
CN202463359U (en) * 2011-12-17 2012-10-03 刘倩 Teaching board
CN202703027U (en) * 2012-08-02 2013-01-30 刘晓婷 Multifunctional blackboard slot
CN202862952U (en) * 2012-06-21 2013-04-10 徐庆 Quick-cleaning blackboard
CN203032192U (en) * 2013-01-28 2013-07-03 大庆风光科技开发有限公司 Novel voice blackboard
CN203110660U (en) * 2012-12-28 2013-08-07 李旺 Blackboard and eraser integrated machine
CN203864257U (en) * 2014-02-27 2014-10-08 耿美红 English teaching board
CN104129205A (en) * 2014-07-15 2014-11-05 浙江工业大学 Self-cleaning blackboard
CN203995272U (en) * 2014-08-04 2014-12-10 石家庄科达文教用品有限公司 Left and right plug-type multimedia composite writing board system
CN204136639U (en) * 2014-09-03 2015-02-04 王博菲 A kind of multi-functional blackboard
CN205075520U (en) * 2015-10-19 2016-03-09 石家庄科达文教用品有限公司 Manual integral xerotripsis clipboard

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201291677Y (en) * 2008-10-16 2009-08-19 朱仕皓 Novel blackboard
CN202098179U (en) * 2011-06-13 2012-01-04 山东科技大学 Writing and cleaning integrated blackboard
CN202088735U (en) * 2011-06-14 2011-12-28 徐则达 Novel blackboard
CN202242633U (en) * 2011-10-21 2012-05-30 济南重工股份有限公司 Integrated blackboard eraser device
CN202463359U (en) * 2011-12-17 2012-10-03 刘倩 Teaching board
CN202463314U (en) * 2012-03-19 2012-10-03 张延美 Environment-friendly blackboard with overall chalk writing erasure
CN202862952U (en) * 2012-06-21 2013-04-10 徐庆 Quick-cleaning blackboard
CN202703027U (en) * 2012-08-02 2013-01-30 刘晓婷 Multifunctional blackboard slot
CN203110660U (en) * 2012-12-28 2013-08-07 李旺 Blackboard and eraser integrated machine
CN203032192U (en) * 2013-01-28 2013-07-03 大庆风光科技开发有限公司 Novel voice blackboard
CN203864257U (en) * 2014-02-27 2014-10-08 耿美红 English teaching board
CN104129205A (en) * 2014-07-15 2014-11-05 浙江工业大学 Self-cleaning blackboard
CN203995272U (en) * 2014-08-04 2014-12-10 石家庄科达文教用品有限公司 Left and right plug-type multimedia composite writing board system
CN204136639U (en) * 2014-09-03 2015-02-04 王博菲 A kind of multi-functional blackboard
CN205075520U (en) * 2015-10-19 2016-03-09 石家庄科达文教用品有限公司 Manual integral xerotripsis clipboard

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109228745A (en) * 2018-10-23 2019-01-18 大连前海大象物联科技有限公司 A kind of sliding intelligent blackboard
CN109263367A (en) * 2018-10-23 2019-01-25 大连前海大象物联科技有限公司 A kind of parallel-moving type intelligent blackboard

Also Published As

Publication number Publication date
CN105216495B (en) 2017-01-25

Similar Documents

Publication Publication Date Title
CN203371959U (en) Multifunctional blackboard erasing and writing device with machine vision
CN207327924U (en) A kind of blackboard device
CN204820786U (en) Remove english teaching blackboard
CN104129205A (en) Self-cleaning blackboard
CN103231604B (en) Blackboard with automatic dust collection eraser
CN102225675A (en) Multifunctional electric self-cleaning teaching blackboard
CN103950329B (en) Electric blackboard eraser device
CN205016096U (en) Template of practising handwriting with learn to write by tracing over characters printed in red, face and write and compare function
CN103192639A (en) Blackboard wiping machine with cleaning function
CN202685701U (en) Easily erased energy-saving blackboard
CN201394995Y (en) Automatic cleaning dust-free blackboard
CN201849154U (en) Folding multifunctional blackboard
CN108001083A (en) A kind of detachable spliced blackboard of English education
CN102267318A (en) Roller blackboard
CN106240205A (en) A kind of education blackboard cleaning device
CN205044364U (en) Tourism management board of imparting knowledge to students
CN105667135A (en) Multifunctional teaching device
CN205311182U (en) Take blackboard subassembly of self -cleaning function
CN205044386U (en) Automatically cleaning blackboard with water spray function
CN204605298U (en) The two-sided use blackboard of dust-collecting type is wiped in a kind of
CN101367308A (en) Multifunctional environment friendly blackboard
CN202319521U (en) Conveying belt type blackboard
CN205167973U (en) Electronic integral wet rubbing clipboard
CN203623245U (en) Automatic dust removing blackboard
CN208092983U (en) A kind of Chinese literature board of education

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model