CN108973461A - A kind of self-bring in type rotation office wiping word brush - Google Patents

A kind of self-bring in type rotation office wiping word brush Download PDF

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Publication number
CN108973461A
CN108973461A CN201810902761.4A CN201810902761A CN108973461A CN 108973461 A CN108973461 A CN 108973461A CN 201810902761 A CN201810902761 A CN 201810902761A CN 108973461 A CN108973461 A CN 108973461A
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CN
China
Prior art keywords
linkage
fixed
attracted
seat
rotation
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.)
Granted
Application number
CN201810902761.4A
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Chinese (zh)
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CN108973461B (en
Inventor
沈琳松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weimaiyun Technology Co., Ltd
Original Assignee
Hefei Jun Machinery Technology Co Ltd
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Priority to CN201810902761.4A priority Critical patent/CN108973461B/en
Publication of CN108973461A publication Critical patent/CN108973461A/en
Application granted granted Critical
Publication of CN108973461B publication Critical patent/CN108973461B/en
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Classifications

    • 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

Abstract

Office, which is rotated, the invention discloses a kind of self-bring in type wipes word brush, including being attracted positioning tube, the bottom end for being attracted positioning tube is mounted with actuation magnet, it is attracted in the middle part of the side wall inner surfaces of positioning tube and is mounted with electronic fractional motor, the top integrally connected for being attracted positioning tube is fixed with the first rotational positioning plate, rotation axis is mounted at first rotational positioning plate center, the power output end of the bottom end connection electronic fractional motor of rotation axis, it is successively arranged to be fixed at the top of rotation axis simultaneously and folds seat, tooth and linkage mechanism and limit block seat, it wherein folds and retracting mechanism is installed on seat, scrubbing brush is mounted on retracting mechanism.Wiping word brush of the invention is directly fixed on board, and can be flexed outward when rotating wiping, can be improved wiping efficiency, without human intervention.

Description

A kind of self-bring in type rotation office wiping word brush
Technical field
The invention belongs to office equipment fields, are related to a kind of self-bring in type rotation office wiping word brush.
Background technique
Capable demonstration is write into sometimes for submitting a written statement to a higher authority in board in meeting, present board all has magnetism substantially, can Directly will be fixed the paper documents such as bulletin, manuscript by magnet on board, but existing wiping word brush is still By manually being wiped, not only wiping speed is slow, and wipe range it is small, can only once take one wipe word brush into Row wiping, can not only interrupt the thinking of speechmaker and waste time.
Summary of the invention
Office is rotated the purpose of the present invention is to provide a kind of self-bring in type and wipes word brush, which, which is directly fixed, is writing It on letter stencil, and can be flexed outward when rotating wiping, can be improved wiping efficiency, without human intervention.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of self-bring in type rotation office wiping word brush, including it is attracted positioning tube, the bottom end for being attracted positioning tube is mounted with suction Magnet is closed, is attracted in the middle part of the side wall inner surfaces of positioning tube and is mounted with electronic fractional motor, the top for being attracted positioning tube integrally connects It connects and is fixed with the first rotational positioning plate, rotation axis, the bottom end connection of rotation axis are mounted at the first rotational positioning plate center The power output end of electronic fractional motor, while being successively arranged to be fixed at the top of rotation axis and folding seat, tooth and linkage mechanism and limit Block seat is equipped with retracting mechanism wherein folding, is mounted with scrubbing brush on retracting mechanism on seat;
Folding seat includes being sheathed on the rotation fixed cylinder being attracted on positioning tube, and the top integrally connected for rotating fixed cylinder is fixed There is the second rotational positioning plate, folds seat and be mounted in rotation axis by the second rotational positioning plate, rotate the bottom end of fixed cylinder Integrally connected is fixed with positioning support circle, and the surface side of positioning support circle is equidistantly provided with several the first limits for extending to avris Hole;
Tooth and linkage mechanism include being arranged the first coupled wheel being fixed in rotation axis, and the end face of the first coupled wheel is by turning Axis connection is fixed with interlocking bar, is fixed with fixing axle in the middle part of the bottom surface of interlocking bar, is mounted in fixing axle and the first linkage The second coupled wheel of engagement is taken turns, while one end of interlocking bar is mounted with the third coupled wheel engaged with the second coupled wheel;
Retracting mechanism include be arranged be fixed on rotation fixed cylinder upper end linkage circle and it is several be angularly installed on positioning branch Support ring surface folds seat, and the upper end side wall for the circle that links angularly is equipped with several linkage teeth, and linkage tooth is engaged with third coupled wheel, The bottom surface of linkage circle is provided with vortex linkage slot;Folding seat includes linkage disk;The surface of linkage disk is equipped with scroll wrap, the whirlpool for the disk that links Rotation tooth is engaged with the vortex linkage slot of linkage circle bottom surface, and linkage disk is located at the surface of positioning support circle, the curved wall for the disk that links Outer surface is fixed there are two in parallel and in horizontally disposed positive stop strip, and the sliding of positive stop strip upper end is connected in the first limit hole.
Further, the middle part of sliding channel inner surface for being attracted positioning tube is vertically and fixedly provided with fixed strip, and electronic fractional motor installation is solid Due to the surface of fixed strip.
Further, the bottom surface of positioning support circle and the bottom surface for being attracted positioning tube in the same plane, are attracted magnet bottom surface It is 0.3-0.5cm with the distance between positioning tube bottom surface is attracted.
Further, limit block seat includes position-limiting drum, and the top integrally connected of position-limiting drum is fixed with third rotational positioning plate, Mounting groove is provided at the bottom center of third rotational positioning plate, the top of shaft is mounted in mounting groove, the bottom of position-limiting drum End cap is set to the outside of positioning support circle, and the side wall inner surfaces of position-limiting drum connect with the side wall of positioning support circle;Position-limiting drum Bottom end side wall be angularly provided with the second limit hole for extending to bottom surface, the second limit hole is corresponding with above and below the first limit hole, The lower end sliding of positive stop strip is connected in the second limit hole, the side wall of two positive stop strips and the second limit hole two of the first limit hole Stomidium wall connects.
Further, the bottom end side wall of two positive stop strips is opposite is provided with fixing slot, and scrubbing brush is connected and fixed in two fixing slots Between.
Beneficial effects of the present invention:
Wiping word brush of the invention is directly fixed on board, and can be flexed outward when rotating wiping, energy Enough primary wiping very wide ranges, and then improve wiping efficiency.
After wiping word brush of the invention need to be only fixed on board, without human intervention, wiped automatically, and The scrubbing brush for wiping word brush is directly to be connected on positive stop strip, facilitates taking-up when using and replacing.
Wiping word brush of the invention can expand wiping range by folding the dispersion of seat when wiping word, while finish in use Volume can be reduced by folding the polymerization of seat afterwards, and then reduce memory space, facilitate placement, and can be straight after use It connects and is pull-in on board, place the loss for wiping letter stencil, while facilitating next directly use.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
Fig. 1 is structural schematic diagram when scrubbing brush of the present invention stretches out wiping;
Fig. 2 is structural schematic diagram when present invention wiping word brush is idle;
Fig. 3 is the partial structural diagram of Fig. 1;
Fig. 4 is the explosive view of Fig. 3;
Fig. 5 is the partial structural diagram of Fig. 3;
Fig. 6 is tooth and linkage mechanism structural schematic diagram;
Fig. 7 is Fig. 1 partial structural diagram;
Partial structural diagram when Fig. 8 is several linkage disk polymerizations;
Fig. 9 is the structural schematic diagram of linkage circle;
Figure 10 is the structural schematic diagram for folding seat.
Specific embodiment
A kind of self-bring in type rotation office wiping word brush, shown in as shown in Figure 1, Figure 2, Fig. 3, Fig. 4 and Fig. 5, which can pass through Magnet is pull-in on tablet surface, and including positioning tube 1 is attracted, the bottom end for being attracted positioning tube 1 is mounted with actuation magnet 11, entire word brush of wiping is fixed in surface of writing by being attracted magnet, it can by two objects of the fixation of magneticaction Freely to remove, when needing to wipe different location by wipe word brush be moved to the position then pass through be attracted magnet 11 be attracted It is fixed, it is attracted in the middle part of the side wall inner surfaces of positioning tube 1 and is mounted with electronic fractional motor, the top for being attracted positioning tube 1 integrally connects It connects and is fixed with the first rotational positioning plate 12, rotation axis 13 is mounted at 12 center of the first rotational positioning plate, rotation axis 13 Bottom end connects the power output end of electronic fractional motor, while 13 top of rotation axis is successively arranged to be fixed with and folds seat 2, tooth and linkage Mechanism 3 and limit block seat 4, are equipped with retracting mechanism 5 wherein folding, scrubbing brush 6 are mounted on retracting mechanism 5 on seat 2;
The middle part of sliding channel inner surface for being attracted positioning tube 1 is vertically and fixedly provided with fixed strip 14, and electronic fractional motor is mounted on solid Determine the surface of item 14;
Folding seat 2 includes being sheathed on the rotation fixed cylinder 21 being attracted on positioning tube 1, and the top of rotation fixed cylinder 21 integrally connects It connects and is fixed with the second rotational positioning plate 22, the surface of the second rotational positioning plate 22 is provided with first through hole 23, folds seat 2 and passes through rotation The first through hole 23 that axis 13 passes through 22 surface of the second rotational positioning plate is mounted in rotation axis 13,13 rotation process of rotation axis Middle drive folds seat 2 and rotates together, and the bottom end integrally connected of rotation fixed cylinder 21 is fixed with positioning support circle 24, positioning support circle 24 surface side is equidistantly provided with several the first limit holes 241 for extending to avris;The bottom surface of positioning support circle 24 and suction simultaneously The bottom surface of conjunction positioning tube 1 in the same plane, and is attracted 11 bottom surface of magnet and is attracted the distance between 1 bottom surface of positioning tube as 0.3- 0.5cm can keep actuation magnet 11 to be fixed the bottom for being attracted positioning tube 1 when tablet surface and fold seat 2 in this way Bottom do not connect with tablet surface, be not only convenient for being attracted, and prevent wipe word brush rotation wipe word when be attracted positioning tube with Folding that the frictional force between seat and board causes entirely to wipe word brush can not normal rotary work;
As shown in fig. 6, tooth and linkage mechanism 3 include being arranged the first coupled wheel 31 being fixed in rotation axis 13, first The end face of driving wheel 31 is fixedly connected with interlocking bar 32 by shaft 36, is fixed with fixing axle 33 in the middle part of the bottom surface of interlocking bar 32, Gu The second coupled wheel 34 engaged with the first coupled wheel 31 is mounted on dead axle 33, while one end of interlocking bar 32 is installed and fixed There is the third coupled wheel 35 engaged with the second coupled wheel 34;The first coupled wheel 31 is driven to rotate in 13 rotation process of rotation axis, First coupled wheel 31 drives interlocking bar 32 to rotate simultaneously by shaft 36, keeps shaft 36 identical as the revolving speed of rotation axis 13, together When the first coupled wheel 31 pass through engagement drive the second coupled wheel 34 rotation, the second coupled wheel 34 drive 35 turns of third coupled wheel It is dynamic, rotation while the second coupled wheel and third coupled wheel rotate under the drive of interlocking bar 32 around shaft;
As shown in fig. 7, limit block seat 4 includes position-limiting drum 41, the top integrally connected of position-limiting drum 41 is fixed with third rotation Positioning plate 42 is provided with mounting groove at the bottom center of third rotational positioning plate 42, and the top of shaft 36 is mounted on mounting groove In, drive entire limit block seat 4 to rotate together in 36 rotation process of shaft, since shaft 36 is identical with the revolving speed of rotation axis 13, Therefore position-limiting drum 41 is identical with the velocity of rotation for folding seat 2, the bottom surface of position-limiting drum 41 and the bottom for folding positioning support circle 24 in seat 2 Face is in the same plane;The bottom end side wall of position-limiting drum 41 is angularly provided with the second limit hole 411 for extending to bottom surface, the second limit Hole 411 is corresponding with the first about 241 limit hole, and the first limit hole 241 and the second limit hole 411 is of same size;Limit The bottom end of position cylinder 41 is sheathed on the outside of positioning support circle 24, and the side wall inner surfaces of position-limiting drum 41 and positioning support circle 24 Side wall connects;The first limit hole 241 is kept to be connected to setting with the second limit hole 411 during installation;
As shown in Fig. 8, Fig. 9 and Figure 10, retracting mechanism 5 includes being arranged the linkage circle 51 for being fixed on rotation 21 upper end of fixed cylinder With it is several be angularly installed on 24 surface of positioning support circle fold seat 52, rotation 21 upper end wall outer surface of fixed cylinder is arranged solid Surely there is bearing, linkage circle 51, which is arranged, to be fixed on bearing, and the upper end side wall of linkage circle 51 is angularly equipped with several linkage teeth 511, Linkage tooth 511 is engaged with third coupled wheel 35, is rotated by third coupled wheel 35 and turning collar 51 is driven to rotate together, due to third Coupled wheel 35 is the biggish gear of height, so the upper end of third coupled wheel 35 is engaged with the second coupled wheel 34, lower end and linkage The linkage tooth 511 of circle 51 engages, while the bottom surface for the circle 51 that links is provided with vortex linkage slot 512;It is fan that seat 52, which is folded, including shape The linkage disk 521 of shape, several linkage disks 521 are combined into circle, and the surface of linkage disk 521 is located at fan-shaped the center point and is provided with extension To the fan-shaped pylone in the center of circle, the aperture of fan-shaped pylone is equal to the outer diameter of rotation fixed cylinder 21, when several linkage disks 521 are at center When polymerization, it is combined into circle between the disk 521 that links, and the fan-shaped pylone composition for the disk 521 that links matches with rotation fixed cylinder 21 The circular through hole of conjunction;The surface of linkage disk 521 is equipped with scroll wrap 522, and 51 bottom surfaces are enclosed in the scroll wrap 522 for the disk 521 that links and linkage Vortex linkage slot 512 engage, linkage disk 521 is located at the surface of positioning support circle 24, the curved wall outer surface of linkage disk 521 It is fixed that there are two in parallel and in horizontally disposed positive stop strip 523, the sliding of 523 upper end of positive stop strip is connected in the first limit hole 241, Lower end sliding is connected in the second limit hole 411, the side wall of two positive stop strips 523 and the second limit hole of the first limit hole 241 411 both ends hole walls connect, and to link disk 521 along the first limit hole 241 and the second limit by the position-limiting action of positive stop strip 523 Hole 411 is slided, while the bottom end side wall of two positive stop strips 523 is provided with fixing slot 524 relatively, and scrubbing brush 6 is connected and fixed to be blocked in two Gu between slot 524;
The specific work process of the wiping word brush are as follows:
Limit block seat 4, is installed on the top of shaft 36 by the first step, and keeps the first limit hole 241 and the second limit hole 411 is corresponding, while scrubbing brush 6 being connected and fixed in fixing slot 524;
Entire wiping word brush is fixed by being attracted magnet 11 in the position that board needs to wipe by second step;
Third step opens electronic fractional motor, and rotation axis 13 is driven to rotate, and rotation axis 13, which drives, entirely folds seat 2 and first Coupled wheel 31 rotates, and the first coupled wheel 31 drives interlocking bar 32 to rotate simultaneously by shaft 36, keeps shaft 36 and rotation axis 13 Revolving speed it is identical, while the first coupled wheel 31 pass through engagement drive the second coupled wheel 34 rotation, the second coupled wheel 34 drive Third coupled wheel 35 rotates, while shaft 36 drives limit block seat 4 to rotate together;Connection is driven in 35 rotation process of third coupled wheel Moving-coil 51 rotates, and drives linkage disk 521 to rotate by the engagement between linkage circle 51 and linkage disk 521, due to the disk that links 521 are connected in the first limit hole 241 and the second limit hole 411 by positive stop strip 523, pass through the position-limiting action of positive stop strip 523 So that linkage disk 521 can only be slided along the first limit hole 241 and the second limit hole 411, the discrete of several linkage disks 521 is realized, It when the disk 521 that links, which is limited cylinder 41, to be stopped, cannot move again, while link disk 521 and linkage circle 51 are together with folding seat 2 Rotation realizes that linkage disk 521 is protruding in rotation, so that the rotation wiping of 6 side of scrubbing brush, the protruding rotation in side are wiped It wipes, fast automatic can be wiped on a large scale, if shown in Fig. 1;
4th step can be moved to after another place is attracted after wiping at one and continue to wipe, after wiping, control Electronic fractional motor processed reversely rotates, and several linkage disks 521 are to gathering at center at this time, and then scrubbing brush 6 is driven to be contracted to position-limiting drum In 41, it is not take up space, as shown in Figure 2.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification, It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only It is limited by claims and its full scope and equivalent.

Claims (5)

1. word brush is wiped in a kind of self-bring in type rotation office, which is characterized in that including being attracted positioning tube (1), be attracted the bottom of positioning tube (1) End, which is mounted with, is attracted magnet (11), is attracted in the middle part of the side wall inner surfaces of positioning tube (1) and is mounted with electronic fractional motor, inhales The top integrally connected for closing positioning tube (1) is fixed with the first rotational positioning plate (12), pacifies at first rotational positioning plate (12) center Dress is fixed with rotation axis (13), the power output end of the bottom end connection electronic fractional motor of rotation axis (13), while rotation axis (13) Top, which is successively arranged to be fixed with, folds seat (2), tooth and linkage mechanism (3) and limit block seat (4), installs on seat (2) wherein folding Have retracting mechanism (5), scrubbing brush (6) are mounted on retracting mechanism (5);
Folding seat (2) includes being sheathed on the rotation fixed cylinder (21) being attracted on positioning tube (1), rotates the top one of fixed cylinder (21) Body is fixedly connected with the second rotational positioning plate (22), folds seat (2) by the second rotational positioning plate (22) and is mounted on rotation On axis (13), the bottom end integrally connected of rotation fixed cylinder (21) is fixed with positioning support circle (24), the table of positioning support circle (24) Face side is equidistantly provided with several the first limit holes (241) for extending to avris;
Tooth and linkage mechanism (3) include being arranged the first coupled wheel (31) being fixed on rotation axis (13), the first coupled wheel (31) End face be fixedly connected with interlocking bar (32) by shaft (36), be fixed with fixing axle (33) in the middle part of the bottom surface of interlocking bar (32), The second coupled wheel (34) engaged with the first coupled wheel (31), while the one of interlocking bar (32) are mounted in fixing axle (33) End is mounted with the third coupled wheel (35) engaged with the second coupled wheel (34);
Retracting mechanism (5) includes being arranged the linkage circle (51) for being fixed on rotation fixed cylinder (21) upper end and several being angularly installed on Positioning support circle (24) surface folds seat (52), and the upper end side wall of linkage circle (51) is angularly equipped with several linkage teeth (511), Linkage tooth (511) is engaged with third coupled wheel (35), and the bottom surface of linkage circle (51) is provided with vortex linkage slot (512);Fold seat It (52) include linkage disk (521);The surface of linkage disk (521) is equipped with scroll wrap (522), the scroll wrap (522) of linkage disk (521) It is engaged with vortex linkage slot (512) of linkage circle (51) bottom surface, linkage disk (521) is located at the surface of positioning support circle (24), connection The curved wall outer surface of Moving plate (521) is fixed, and there are two in parallel and in horizontally disposed positive stop strip (523), positive stop strip (523) Upper end sliding is connected in the first limit hole (241).
2. word brush is wiped in a kind of self-bring in type rotation office according to claim 1, which is characterized in that be attracted positioning tube (1) Middle part of sliding channel inner surface is vertically and fixedly provided with fixed strip (14), and electronic fractional motor is mounted on the surface of fixed strip (14).
3. word brush is wiped in a kind of self-bring in type rotation office according to claim 1, which is characterized in that positioning support circle (24) Bottom surface and the bottom surface for being attracted positioning tube (1) in the same plane, are attracted magnet (11) bottom surface and are attracted between positioning tube (1) bottom surface Distance be 0.3-0.5cm.
4. word brush is wiped in a kind of self-bring in type rotation office according to claim 1, which is characterized in that limiting block seat (4) includes Position-limiting drum (41), the top integrally connected of position-limiting drum (41) are fixed with third rotational positioning plate (42), third rotational positioning plate (42) mounting groove is provided at bottom center, the top of shaft (36) is mounted in mounting groove, the bottom end of position-limiting drum (41) It is sheathed on the outside of positioning support circle (24), and the side wall phase of the side wall inner surfaces of position-limiting drum (41) and positioning support circle (24) It connects;The bottom end side wall of position-limiting drum (41) is angularly provided with the second limit hole (411) for extending to bottom surface, the second limit hole (411) Corresponding up and down with the first limit hole (241), the lower end sliding of positive stop strip (523) is connected in the second limit hole (411), and two The side wall of positive stop strip (523) connects with the second limit hole (411) both ends hole wall of the first limit hole (241).
5. word brush is wiped in a kind of self-bring in type rotation office according to claim 1, which is characterized in that two positive stop strips (523) Bottom end side wall it is opposite be provided with fixing slot (524), scrubbing brush (6) connects and fixes between two fixing slots (524).
CN201810902761.4A 2018-08-09 2018-08-09 Self-retracting rotary office word-erasing brush Active CN108973461B (en)

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CN201810902761.4A CN108973461B (en) 2018-08-09 2018-08-09 Self-retracting rotary office word-erasing brush

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Application Number Priority Date Filing Date Title
CN201810902761.4A CN108973461B (en) 2018-08-09 2018-08-09 Self-retracting rotary office word-erasing brush

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CN108973461A true CN108973461A (en) 2018-12-11
CN108973461B CN108973461B (en) 2020-09-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112428732A (en) * 2020-12-15 2021-03-02 安徽文香信息技术有限公司 Dust-proof electric blackboard eraser based on intelligent classroom and control system thereof
CN112718628A (en) * 2020-12-05 2021-04-30 郑州铁路职业技术学院 Railway signal relay dust collector

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Publication number Priority date Publication date Assignee Title
JPH08238895A (en) * 1995-03-03 1996-09-17 Mitsui High Tec Inc Eraser for whiteboard
CN2345151Y (en) * 1998-09-17 1999-10-27 尹景阳 Adsorption type rotary scraper
CN202122552U (en) * 2011-07-05 2012-01-25 姚妙杰 Mop head capable of brushing and moping simultaneously
CN202481175U (en) * 2012-03-09 2012-10-10 刘乔祎 Magnetic-absorbing type blackboard cleaning wall-climbing robot
CN203110719U (en) * 2013-03-28 2013-08-07 董昕亿 Blackboard eraser
CN203207957U (en) * 2013-04-16 2013-09-25 王绍岳 Magnetic glass brush
CN203438734U (en) * 2013-07-16 2014-02-19 西安理工大学 Folding type dust-absorbing blackboard eraser
CN103895426A (en) * 2012-12-25 2014-07-02 璧山县长城幼儿园 Retractable blackboard eraser
CN203854389U (en) * 2014-03-07 2014-10-01 苏州工业园区职业技术学院 Full-automatic dustless blackboard eraser

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08238895A (en) * 1995-03-03 1996-09-17 Mitsui High Tec Inc Eraser for whiteboard
CN2345151Y (en) * 1998-09-17 1999-10-27 尹景阳 Adsorption type rotary scraper
CN202122552U (en) * 2011-07-05 2012-01-25 姚妙杰 Mop head capable of brushing and moping simultaneously
CN202481175U (en) * 2012-03-09 2012-10-10 刘乔祎 Magnetic-absorbing type blackboard cleaning wall-climbing robot
CN103895426A (en) * 2012-12-25 2014-07-02 璧山县长城幼儿园 Retractable blackboard eraser
CN203110719U (en) * 2013-03-28 2013-08-07 董昕亿 Blackboard eraser
CN203207957U (en) * 2013-04-16 2013-09-25 王绍岳 Magnetic glass brush
CN203438734U (en) * 2013-07-16 2014-02-19 西安理工大学 Folding type dust-absorbing blackboard eraser
CN203854389U (en) * 2014-03-07 2014-10-01 苏州工业园区职业技术学院 Full-automatic dustless blackboard eraser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112718628A (en) * 2020-12-05 2021-04-30 郑州铁路职业技术学院 Railway signal relay dust collector
CN112428732A (en) * 2020-12-15 2021-03-02 安徽文香信息技术有限公司 Dust-proof electric blackboard eraser based on intelligent classroom and control system thereof

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