CN108909294A - A kind of ash-collecting blackboard eraser - Google Patents

A kind of ash-collecting blackboard eraser Download PDF

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Publication number
CN108909294A
CN108909294A CN201810673452.4A CN201810673452A CN108909294A CN 108909294 A CN108909294 A CN 108909294A CN 201810673452 A CN201810673452 A CN 201810673452A CN 108909294 A CN108909294 A CN 108909294A
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China
Prior art keywords
blackboard
dust
cleaning mechanism
cabinet
ash
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Granted
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CN201810673452.4A
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Chinese (zh)
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CN108909294B (en
Inventor
瑙f尝
解波
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Individual
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00Blackboard or slate cleaning devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00Blackboard or slate cleaning devices
    • B43L21/02Blackboard or slate cleaning devices with means for absorbing the chalk dust

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  • Drawing Aids And Blackboards (AREA)

Abstract

The present invention relates to teaching aid technical field, specifically a kind of ash-collecting blackboard eraser, including installing mechanism, displacement mechanism, blackboard main body, the first cleaning mechanism, switching mechanism, the second cleaning mechanism, dust collection mechanism and the first rotary electric machine;The present invention is when along installing mechanism mobile box, the runner of linear array setting will drive hairbrush rotation, so as to be scraped to blackboard, so that the chalk dust on blackboard surface is quickly wiped off, cleaning effect is good, and runner is in genesis analysis, can realize and be completely covered to longitudinal height of blackboard, without user again to handling at the top of blackboard;The chalk dust wiped off will can be collected, in the classroom for avoiding it from drifting, and be interconnected using the top of the circulation passage of trapezium structure and dust-storage chamber, when can be avoided shutdown, chalk dust flows out again by dust collection mechanism;The mark of remaining can be erased by foam-rubber cushion, so that blackboard is more bright.

Description

A kind of ash-collecting blackboard eraser
Technical field
The present invention relates to teaching aid technical field, specifically a kind of ash-collecting blackboard eraser.
Background technique
Blackboard eraser is mainly to pass through a plank and wiping for the chalk on blackboard is printed the teaching aid wiped Cloth composition, it is relatively simple for structure.
In use for some time, surface can remain many chalk dusts to current blackboard eraser, so that erase the board Effect is greatly reduced, and service life is limited;When erasing the board, chalk dust can drift air;It is carried out at the top to blackboard clear It is relatively elaborate when reason, it sometimes need to also be by stool.In consideration of it, the present invention provides a kind of ash-collecting blackboard erasers, with following Feature:
(1) a kind of ash-collecting blackboard eraser of the present invention, when along installing mechanism mobile box, linear array setting Runner will drive hairbrush rotation, so as to be scraped to blackboard so that the chalk dust on blackboard surface is quickly wiped off, cleaning Effect is good, and runner is in genesis analysis, can realize and be completely covered to longitudinal height of blackboard, without user again to blackboard Top is handled.
(2) a kind of ash-collecting blackboard eraser of the present invention can will carry out the chalk dust wiped off by dust collection mechanism It collects, in the classroom for avoiding it from drifting, and is interconnected using the top of the circulation passage of trapezium structure and dust-storage chamber, it can When avoiding shutting down, chalk dust flows out again.
(3) a kind of ash-collecting blackboard eraser of the present invention, can be in the first cleaning mechanism, second clear by switching mechanism Free switching between mechanism is managed, thus erase the mark of remaining after the operation of the first cleaning mechanism, then through foam-rubber cushion, So that blackboard is more bright, three faces of support base are equipped with foam-rubber cushion, are used interchangeably, and extend the use of the second cleaning mechanism Service life.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of ash-collecting blackboard erasers, move along installing mechanism When cabinet, the runner of linear array setting will drive hairbrush rotation, so as to scrape to blackboard, so that the powder on blackboard surface Pen ash is quickly wiped off, and cleaning effect is good, and runner is in genesis analysis, can be realized to longitudinal height of blackboard and be covered completely Lid, without user again to being handled at the top of blackboard;The chalk dust wiped off will can be collected, be kept away by dust collection mechanism Exempt from the classroom that it is drifted, and be interconnected using the top of the circulation passage of trapezium structure and dust-storage chamber, can be avoided and stop When machine, chalk dust flows out again;By switching mechanism can between the first cleaning mechanism, the second cleaning mechanism free switching, from And erase the mark of remaining after the operation of the first cleaning mechanism, then through foam-rubber cushion, so that blackboard is more bright, support Three faces of seat are equipped with foam-rubber cushion, are used interchangeably, and extend the service life of the second cleaning mechanism.
The technical solution adopted by the present invention to solve the technical problems is:A kind of ash-collecting blackboard eraser, including installing mechanism, Displacement mechanism, blackboard main body, the first cleaning mechanism, switching mechanism, the second cleaning mechanism, dust collection mechanism and the first rotation electricity Machine;The installing mechanism is located at the bottom of the blackboard main body;The installing mechanism is slidably connected institute's displacement mechanism;Institute's rheme The inside of telephone-moving structure is equipped with first cleaning mechanism and second cleaning mechanism, first cleaning mechanism, described Two cleaning mechanisms are symmetrically set, and first cleaning mechanism, second cleaning mechanism are to clear up blackboard;Described first It is connected between cleaning mechanism, second cleaning mechanism by the switching mechanism, the switching mechanism is to drive descaling machine Structure rotation;The inside of institute's displacement mechanism is equipped with the dust collection mechanism, and the dust collection mechanism is to store chalk dust.
Specifically, the installing mechanism includes that installation guide rail and mounting post, the installation guide rail are set to the blackboard in parallel The bottom of main body, the length of the installation guide rail are greater than the length of the blackboard main body, and the inner wall both ends of the installation guide rail are hung down It is directly equipped with the mounting post, the mounting post is located at the two sides of the blackboard main body.
Specifically, institute's displacement mechanism includes slide, cabinet, the first access panel and second access panel, it is described Slide is rhs-structure, and the slide is socketed on the outside of the installation guide rail, and the top of the slide is vertically equipped with the case Body, the inner wall of the cabinet and the surface of the blackboard main body are bonded to each other, and the length of the cabinet is greater than the blackboard main body Width, the cabinet and the side of the blackboard main body be parallel to each other, and the cabinet is the cavity structure of inner layer opening, described The outer wall hinge of cabinet is connected with first access panel and second access panel.
Specifically, the switching mechanism includes rotating plate and the second rotary electric machine, second rotary electric machine and the cabinet Inside top surface midline be vertically fixedly connected, second rotary electric machine is rotatablely connected the rotating plate, the rotating plate with it is described It is mutually perpendicular to be distributed between second rotary electric machine.
Specifically, first cleaning mechanism includes runner, driving belt, hairbrush, rotary column and fixed plate, the fixation Plate is vertical at one end of the rotating plate, and the linear array of the side wall of the fixed plate, which is equally spaced, the runner, and described turn The hairbrush is distributed in the bottom surface of wheel, and the top of the fixed plate is fixed with the rotary column, and the bottom end of the fixed plate is fixed with First rotary electric machine, the rotary column, first rotary electric machine outer wall be wound with the driving belt, the transmission Belt sequentially passes through each runner.
Specifically, second cleaning mechanism includes support rod, support base and foam-rubber cushion, the support rod is vertical at The other end of the rotating plate, the support rod are fixed on the top of the support base, and the section of the support base is equilateral triangle Each side of shape, the support base has been connected by screw to the foam-rubber cushion.
Specifically, the dust collection mechanism includes box body, into dirt channel, circulation passage, dust-storage chamber, mesh partition and dust suction Fan, the box body are set to the inside of the cabinet, the outer wall of the box body be provided with it is described into dirt channel, it is described to be connected into dirt channel There is the circulation passage, the circulation passage and the top of the dust-storage chamber are interconnected, and the inside of the dust-storage chamber is equipped with institute Mesh partition is stated, the side of the mesh partition is equipped with the dust-absorbing fan, and the dust-absorbing fan is from top to bottom equipped with several, described Lateral section into dirt channel is in splayed configuration, and the section of the circulation passage is in a rectangular trapezoid.
Beneficial effects of the present invention:
(1) a kind of ash-collecting blackboard eraser of the present invention, when along installing mechanism mobile box, linear array setting Runner will drive hairbrush rotation, so as to be scraped to blackboard so that the chalk dust on blackboard surface is quickly wiped off, cleaning Effect is good, and runner is in genesis analysis, can realize and be completely covered to longitudinal height of blackboard, without user again to blackboard Top is handled.
(2) a kind of ash-collecting blackboard eraser of the present invention can will carry out the chalk dust wiped off by dust collection mechanism It collects, in the classroom for avoiding it from drifting, and is interconnected using the top of the circulation passage of trapezium structure and dust-storage chamber, it can When avoiding shutting down, chalk dust flows out again.
(3) a kind of ash-collecting blackboard eraser of the present invention, can be in the first cleaning mechanism, second clear by switching mechanism Free switching between mechanism is managed, thus erase the mark of remaining after the operation of the first cleaning mechanism, then through foam-rubber cushion, So that blackboard is more bright, three faces of support base are equipped with foam-rubber cushion, are used interchangeably, and extend the use of the second cleaning mechanism Service life.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of structural schematic diagram of preferred embodiment of ash-collecting blackboard eraser provided by the invention;
Fig. 2 is box inner structure schematic diagram shown in FIG. 1;
Fig. 3 is the first cleaning mechanism shown in Fig. 2, switching mechanism and dust collection mechanism structural schematic diagram;
Fig. 4 is the second cleaning mechanism structural schematic diagram shown in Fig. 2.
In figure:1, installing mechanism, 11, installation guide rail, 12, mounting post, 2, displacement mechanism, 21, slide, 22, cabinet, 23, First access panel, the 24, second access panel, 3, blackboard main body, the 4, first cleaning mechanism, 41, runner, 42, driving belt, 43, hairbrush, 44, rotary column, 45, fixed plate, the 46, first rotary electric machine, 5, switching mechanism, 51, rotating plate, the 52, second rotary electric machine, 6, the second cleaning mechanism, 61, support rod, 62, support base, 63, foam-rubber cushion, 7, dust collection mechanism, 71, box body, 72, into dirt channel, 73, circulation passage, 74, dust-storage chamber, 75, mesh partition, 76, dust-absorbing fan.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Specific embodiment is closed, the present invention is further explained.
As Figure 1-Figure 4, a kind of ash-collecting blackboard eraser of the present invention, including it is installing mechanism 1, displacement mechanism 2, black Plate main body 3, the first cleaning mechanism 4, switching mechanism 5, the second cleaning mechanism 6 and dust collection mechanism 7;The installing mechanism 1 is located at The bottom of the blackboard main body 3;The installing mechanism 1 is slidably connected institute's displacement mechanism 2;Pacify the inside of institute's displacement mechanism 2 Equipped with first cleaning mechanism 4 and second cleaning mechanism 6, first cleaning mechanism 4, second cleaning mechanism 6 It is symmetrically set, first cleaning mechanism 4, second cleaning mechanism 6 are to clear up blackboard;First cleaning mechanism 4, it is connected between second cleaning mechanism 6 by the switching mechanism 5, the switching mechanism 5 is to drive cleaning mechanism to turn It is dynamic;The inside of institute's displacement mechanism 2 is equipped with the dust collection mechanism 7, and the dust collection mechanism 7 is to store chalk dust.
Specifically, as shown in Figure 1, the installing mechanism 1 includes installation guide rail 11 and mounting post 12, the installation guide rail 11 It is set to the bottom of the blackboard main body 3 in parallel, the length of the installation guide rail 11 is greater than the length of the blackboard main body 3, described The inner wall both ends of installation guide rail 11 are vertically equipped with the mounting post 12, and the mounting post 12 is located at the two sides of the blackboard main body 3; In order to realize reciprocal cleaning.
Specifically, as shown in Figure 1, institute's displacement mechanism 2 includes slide 21, cabinet 22, the first access panel 23 and described Second access panel 24, the slide 21 are rhs-structure, and the slide 21 is socketed on the outside of the installation guide rail 11, described The top of slide 21 is vertically equipped with the cabinet 22, and the inner wall of the cabinet 22 and the surface of the blackboard main body 3 are bonded to each other, The length of the cabinet 22 is greater than the width of the blackboard main body 3, and the cabinet 22 and the side of the blackboard main body 3 are mutually flat Row, the cabinet 22 are the cavity structure of inner layer opening, and the outer wall hinge of the cabinet 22 is connected with first access panel 23 and second access panel 24;It is longitudinally covered in order to be carried out to blackboard, improve cleaning speed.
Specifically, as shown in figure 3, the switching mechanism 5 includes rotating plate 51 and the second rotary electric machine 52, second rotation Motor 52 is vertical with the inside top surface midline of the cabinet 22 to be fixedly connected, and second rotary electric machine 52 is rotatablely connected described Rotating plate 51 is mutually perpendicular to be distributed between the rotating plate 51 and second rotary electric machine 52;In order between two cleaning mechanisms Free switching.
Specifically, as shown in figure 3, first cleaning mechanism 4 includes runner 41, driving belt 42, hairbrush 43, rotary column 44, fixed plate 45 and the first rotary electric machine 46, the fixed plate 45 are vertical at one end of the rotating plate 51, the fixed plate The linear array of 45 side wall, which is equally spaced, the runner 41, and the hairbrush 43 is distributed in the bottom surface of the runner 41, described The top of fixed plate 45 is fixed with the rotary column 44, and the bottom end of the fixed plate 45 is fixed with first rotary electric machine 46, institute State rotary column 44, the outer wall of first rotary electric machine 46 is wound with the driving belt 42, the driving belt 42 is successively worn Cross each runner 41;In order to which chalk dust is brushed away so that cleaning effect is more preferable, speed faster.
Specifically, as shown in Figure 2 and Figure 4, second cleaning mechanism 6 includes support rod 61, support base 62 and sponge Pad 63, the support rod 61 are vertical at the other end of the rotating plate 51, and the support rod 61 is fixed on the support base 62 The section on top, the support base 62 is equilateral triangle, and each side of the support base 62 is connected by screw to State foam-rubber cushion 63;In order to clear up mark, more blackboard is more bright.
Specifically, as shown in Figures 2 and 3, the dust collection mechanism 7 include box body 71, into dirt channel 72, circulation passage 73, Dust-storage chamber 74, mesh partition 75 and dust-absorbing fan 76, the box body 71 is outside the inside of the cabinet 22, the box body 71 Wall be provided with it is described into dirt channel 72, it is described to be communicated with the circulation passage 73 into dirt channel 72, the circulation passage 73 with it is described The top of dust-storage chamber 74 is interconnected, and the inside of the dust-storage chamber 74 is equipped with the mesh partition 75, the mesh partition 75 Side is equipped with the dust-absorbing fan 76, and the dust-absorbing fan 76 is from top to bottom equipped with several, and the lateral section into dirt channel 72 is in The section of splayed configuration, the circulation passage 73 is in a rectangular trapezoid;In order to quickly be collected to the chalk dust under cleaning.
When along 1 mobile box 22 of installing mechanism, the runner 41 of linear array setting will drive the rotation of hairbrush 43, thus Blackboard can be scraped, so that the chalk dust on blackboard surface is quickly wiped off, cleaning effect is good, and runner 41 is in longitudinal point Cloth can realize longitudinal height of blackboard and be completely covered, without user again to handling at the top of blackboard;Pass through vacuum cleaner Structure 7 can will be collected the chalk dust wiped off, in the classroom for avoiding it from drifting, and using the circulation passage of trapezium structure 73 is interconnected with the top of dust-storage chamber 74, and when can be avoided shutdown, chalk dust flows out again;It can be by switching mechanism 5 Free switching between one cleaning mechanism 4, the second cleaning mechanism 5, thus after the operation of the first cleaning mechanism 4, then pass through sea Continuous pad 63 erases the mark of remaining, so that blackboard is more bright, three faces of support base 62 are equipped with foam-rubber cushion 62, can replace It uses, extends the service life of the second cleaning mechanism 6.Specifically have:
(1) during installation, first two mounting posts 12 are fixed on the wall by expansion bolt, installation guide rail 11 is carried out Fixed, enabling installation, guide rail 11 is located at the bottom of blackboard, cabinet 22 is bonded with blackboard;
(2), can be along the installation slowly moving slide 21 of guide rail 11 when needing to erase the board, cabinet 11 will be in blackboard table Face movement, the first rotary electric machine 46 of starting drive each runner 41 to rotate by driving belt 42, and runner 41 is transported with electric brush 43 It is dynamic, the chalk on blackboard can be printed and be wiped off, realization quickly cleans, and the chalk dust being scraped can be under the action of dust-absorbing fan 76 Enter from into dirt channel 72, is then moved upwards further along circulation passage 73, finally fall and stored up from the top of dust-storage chamber 74 It deposits, realization is collected while clearing up, and in the classroom that will not be drifted, and the first cleaning mechanism 4 of linear array distribution can Blackboard is carried out longitudinally covered;After moving back and forth twice along installation guide rail 11, the preliminary treatment of chalk dust can be completed;
(3) the second rotary electric machine 52 can be started and drive the first cleaning mechanism 4, the rotation of the second cleaning mechanism 6, so that second is clear Reason mechanism 6 is bonded to each other with blackboard, and user can be again along installation 11 mobile box 22 of guide rail, and foam-rubber cushion 63 can be to blackboard It is wiped, completes last cleaning;
(4) openable second access panel 24 will be stored in chalk dust in dust-storage chamber 74 and clean up, also openable first inspection It builds plate 23 to safeguard the first cleaning mechanism 4, the second cleaning mechanism 5, foam-rubber cushion 63 be cleared up, also replaceable support The working face of seat 62.
For the present invention when along 1 mobile box 22 of installing mechanism, the runner 41 of linear array setting will drive 43 turns of hairbrush Dynamic, so as to scrape to blackboard, so that the chalk dust on blackboard surface is quickly wiped off, cleaning effect is good, and runner 41 In genesis analysis, longitudinal height of blackboard can be realized and be completely covered, without user again to being handled at the top of blackboard;It is logical The chalk dust wiped off can will be collected by crossing dust collection mechanism 7, in the classroom for avoiding it from drifting, and using trapezium structure The top of circulation passage 73 and dust-storage chamber 74 is interconnected, and when can be avoided shutdown, chalk dust flows out again;Pass through switching mechanism 5 Can between the first cleaning mechanism 4, the second cleaning mechanism 5 free switching, thus the first cleaning mechanism 4 operation after, The mark of remaining is erased by foam-rubber cushion 63 again, so that blackboard is more bright, three faces of support base 62 are equipped with foam-rubber cushion 62, it is used interchangeably, extends the service life of the second cleaning mechanism 6.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the description in above embodiment and specification only illustrates the present invention Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and Improvement is both fallen in the scope of protection of present invention.The claimed scope of the invention is by appended claims and its equivalent Object defines.

Claims (7)

1. a kind of ash-collecting blackboard eraser, it is characterised in that:Including installing mechanism (1), displacement mechanism (2), blackboard main body (3), One cleaning mechanism (4), switching mechanism (5), the second cleaning mechanism (6) and dust collection mechanism (7);The installing mechanism (1) is located at The bottom of the blackboard main body (3);The installing mechanism (1) is slidably connected institute's displacement mechanism (2);Institute's displacement mechanism (2) Inside first cleaning mechanism (4) and second cleaning mechanism (6) be installed, it is first cleaning mechanism (4), described Second cleaning mechanism (6) is symmetrically set, and first cleaning mechanism (4), second cleaning mechanism (6) are black to clear up Plate;It is connected between first cleaning mechanism (4), second cleaning mechanism (6) by the switching mechanism (5), it is described to cut Structure (5) change planes to drive cleaning mechanism to rotate;The inside of institute's displacement mechanism (2) is equipped with the dust collection mechanism (7), described Dust collection mechanism (7) is to store chalk dust.
2. a kind of ash-collecting blackboard eraser according to claim 1, it is characterised in that:The installing mechanism (1) includes installation Guide rail (11) and mounting post (12), installation guide rail (11) are set to the bottom of the blackboard main body (3) in parallel, and the installation is led The length of rail (11) is greater than the length of the blackboard main body (3), and the inner wall both ends of installation guide rail (11) are vertically equipped with described Mounting post (12), the mounting post (12) are located at the two sides of the blackboard main body (3).
3. a kind of ash-collecting blackboard eraser according to claim 2, it is characterised in that:Institute's displacement mechanism (2) includes slide (21), cabinet (22), the first access panel (23) and second access panel (24), the slide (21) are rhs-structure, The slide (21) is socketed on the outside of installation guide rail (11), and the top of the slide (21) is vertically equipped with the cabinet (22), the inner wall of the cabinet (22) and the surface of the blackboard main body (3) are bonded to each other, and the length of the cabinet (22) is greater than The side of the width of the blackboard main body (3), the cabinet (22) and the blackboard main body (3) is parallel to each other, the cabinet It (22) is the cavity structure of inner layer opening, the outer wall hinge of the cabinet (22) is connected with first access panel (23) and institute State the second access panel (24).
4. a kind of ash-collecting blackboard eraser according to claim 3, it is characterised in that:The switching mechanism (5) includes rotating plate (51) and the second rotary electric machine (52), second rotary electric machine (52) are vertical with the inside top surface midline of the cabinet (22) It is fixedly connected, second rotary electric machine (52) is rotatablely connected the rotating plate (51), the rotating plate (51) and second rotation Motor is mutually perpendicular to be distributed between (52).
5. a kind of ash-collecting blackboard eraser according to claim 5, it is characterised in that:First cleaning mechanism (4) includes Runner (41), driving belt (42), hairbrush (43), rotary column (44), fixed plate (45) and the first rotary electric machine (46), it is described solid Fixed board (45) is vertical at one end of the rotating plate (51), and the linear array of side wall of the fixed plate (45) is equally spaced It states runner (41), the bottom surface of the runner (41) is distributed with the hairbrush (43), and the top of the fixed plate (45) is fixed It states rotary column (44), the bottom end of the fixed plate (45) is fixed with first rotary electric machine (46), the rotary column (44), described The outer wall of one rotary electric machine (46) is wound with the driving belt (42), and the driving belt (42) sequentially passes through each described Runner (41).
6. a kind of ash-collecting blackboard eraser according to claim 5, it is characterised in that:Second cleaning mechanism (6) includes Support rod (61), support base (62) and foam-rubber cushion (63), the support rod (61) are vertical at the another of the rotating plate (51) End, the support rod (61) are fixed on the top of the support base (62), and the section of the support base (62) is equilateral triangle, Each side of the support base (62) has been connected by screw to the foam-rubber cushion (63).
7. a kind of ash-collecting blackboard eraser according to claim 3, it is characterised in that:The dust collection mechanism (7) includes box body (71), into dirt channel (72), circulation passage (73), dust-storage chamber (74), mesh partition (75) and dust-absorbing fan (76), the box body (71) be set to the inside of the cabinet (22), the outer wall of the box body (71) be provided with it is described into dirt channel (72), it is described logical into dirt Road (72) is communicated with the circulation passage (73), and the top of the circulation passage (73) and the dust-storage chamber (74) is interconnected, The inside of the dust-storage chamber (74) is equipped with the mesh partition (75), and the side of the mesh partition (75) is equipped with the dust-absorbing fan (76), the dust-absorbing fan (76) is from top to bottom equipped with several, and the lateral section into dirt channel (72) is in splayed configuration, the stream The section of circulation passage (73) is in a rectangular trapezoid.
CN201810673452.4A 2018-06-26 2018-06-26 Dust-absorbing blackboard eraser Active CN108909294B (en)

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CN108909294B CN108909294B (en) 2020-03-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109795245A (en) * 2019-03-15 2019-05-24 张艺耀 A kind of blackboard eraser that suitable primary grades pupil uses

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2314949Y (en) * 1997-10-31 1999-04-21 王毅 Automatic erasing dust-free black board
JP2008254411A (en) * 2007-04-05 2008-10-23 Masao Tanaka Eraser
CN201670022U (en) * 2010-05-13 2010-12-15 高融行 Dual-purpose blackboard eraser
CN205498440U (en) * 2016-01-29 2016-08-24 吕浩然 Automatic clearance blackboard device
CN206623586U (en) * 2017-03-02 2017-11-10 余思敏 A kind of novel blackboard eraser
CN207291429U (en) * 2017-04-10 2018-05-01 宜昌慧松电子科技有限公司 A kind of driven blackboard of sanitation and hygiene
CN207310930U (en) * 2017-05-28 2018-05-04 洪辉 It is a kind of to have the function of from the blackboard wiped

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2314949Y (en) * 1997-10-31 1999-04-21 王毅 Automatic erasing dust-free black board
JP2008254411A (en) * 2007-04-05 2008-10-23 Masao Tanaka Eraser
CN201670022U (en) * 2010-05-13 2010-12-15 高融行 Dual-purpose blackboard eraser
CN205498440U (en) * 2016-01-29 2016-08-24 吕浩然 Automatic clearance blackboard device
CN206623586U (en) * 2017-03-02 2017-11-10 余思敏 A kind of novel blackboard eraser
CN207291429U (en) * 2017-04-10 2018-05-01 宜昌慧松电子科技有限公司 A kind of driven blackboard of sanitation and hygiene
CN207310930U (en) * 2017-05-28 2018-05-04 洪辉 It is a kind of to have the function of from the blackboard wiped

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109795245A (en) * 2019-03-15 2019-05-24 张艺耀 A kind of blackboard eraser that suitable primary grades pupil uses

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