CN109501496B - Blackboard cleaning device for middle school - Google Patents
Blackboard cleaning device for middle school Download PDFInfo
- Publication number
- CN109501496B CN109501496B CN201910049673.9A CN201910049673A CN109501496B CN 109501496 B CN109501496 B CN 109501496B CN 201910049673 A CN201910049673 A CN 201910049673A CN 109501496 B CN109501496 B CN 109501496B
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- Prior art keywords
- blackboard
- fixedly connected
- groove
- cleaning device
- cotton
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- 238000004140 cleaning Methods 0.000 title claims abstract description 79
- 229920000742 Cotton Polymers 0.000 claims description 62
- 230000007547 defect Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 230000003749 cleanliness Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007605 air drying Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 206010035653 pneumoconiosis Diseases 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 201000010001 Silicosis Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003176 fibrotic effect Effects 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/04—Wiper holders
Abstract
The invention provides a blackboard cleaning device for middle school, which belongs to the technical field of teaching tools and aims at the defects of the prior art.
Description
Technical Field
The invention discloses a blackboard cleaning device for students, and belongs to the technical field of teaching aids.
Background
The blackboard is not a black board surface, is a plane which can be repeatedly written by chalk in the traditional sense, is hard and is mostly used for teaching. Blackboard is generally made of wood board or ground glass, etc., and can be written on by using specific writing materials such as chalk, etc. Mostly black, dark green, white or beige.
The existing blackboard eraser is simple in structure, and when the blackboard eraser is used for erasing a blackboard, dust is larger, the physical health of teachers and students is affected, so that the blackboard eraser is relatively annoying, the blackboard eraser cannot be cleaned after being used, dust is accumulated more and more after long-term use, and bad influence can be generated due to long-term inhalation of high-concentration dust, wherein the most serious dust is pneumoconiosis. Because of the progressive and irreversible nature of pneumoconiosis fibrotic lesions, no effective treatment has been found to date, and pneumoconiosis (especially silicosis) has a serious impact on the labor capacity and longevity of workers. In addition, the blackboard used in the prior art is higher, and handwriting at some corners of the higher blackboard is difficult to erase.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a blackboard cleaning device which is convenient to detach and clean and can adjust the height of the cleaning device for middle school.
In order to achieve the purposes of dust-free chalk handwriting erasing, convenient disassembly and cleaning and adjustable cleaning device height, the invention provides the following technical scheme: the blackboard cleaning device for middle school comprises a blackboard body, an upper slide way is arranged at the upper end of the blackboard body, an upper pulley is connected in a rolling manner in the upper slide way, a guide rod is connected in the outer side of the upper pulley in a rotating manner through a ball bearing, a lower pulley is fixedly connected with the lower end of the guide rod, a guide groove is arranged in the outer side of the lower end of the blackboard body, a lower slide way is arranged in the guide groove, a lower pulley is connected in a rolling manner in the lower slide way, a cleaning base is connected in the outer side of the guide rod in a sliding manner, a guide hole is arranged in the cleaning base, the guide hole is connected with the guide rod in a sliding manner, a buffer spring is fixedly connected to the side wall of the cleaning base, a fixing plate is fixedly connected to the side end of the buffer spring, a fixing groove is arranged in the fixing plate, a cleaning plate is movably connected in the fixing groove, the front of the cleaning plate is provided with a first clamping groove and a second clamping groove, the lower ends of the first clamping groove and the second clamping groove are fixedly connected with a limiting plate, the inside of the first clamping groove is movably connected with dry wiping cotton, the inside of the second clamping groove is movably connected with wet wiping cotton, the lower ends of the dry wiping cotton and the wet wiping cotton are movably connected with the limiting plate, the dry wiping cotton and the wet wiping cotton are movably connected with the outer surface of the blackboard body, the lower end of the cleaning plate is fixedly connected with an inserting block, the right side of the inserting block is provided with a spring cavity, the inside of the spring cavity is fixedly connected with a telescopic spring, the end part of the telescopic spring is fixedly connected with a clamping block, the side wall of the fixing plate is provided with a limiting hole, the limiting hole is in clamping connection with the clamping block, the outer side of the guide rod is slidably connected with an auxiliary base, the auxiliary base is also slidably connected with the guide rod through the guide hole, the inside of auxiliary base has been seted up and has been accomodate the groove, auxiliary base's upper end fixedly connected with swivel nut, the inside threaded connection of swivel nut has flexible loop bar, and flexible loop bar swing joint is in the inside of accomodating the groove, the upper end fixedly connected with pivot of flexible loop bar, and pivot fixedly connected with is at clean base's lower extreme, and pivot and clean base rotate and be connected.
Further optimize this technical scheme, the guide bar is equipped with two, and the last pulley that corresponds and lower pulley all are equipped with two.
Further optimize this technical scheme, the left end upper half of guide way corresponds the lower pulley and has seted up the circular arc groove, and the diameter in circular arc groove is greater than the wheel diameter of lower pulley 1.3 times, and the circular arc groove is equipped with two.
Further optimize this technical scheme, the spout has been seted up to the inside both sides of fixed slot, the both sides of cleaning board are equipped with the slider, and cleaning board passes through spout and slider sliding connection in the inside of fixed slot.
Further optimize this technical scheme, the inside both sides of first block groove and second block groove are all fixedly connected with T type piece, T type groove has all been seted up to the both sides that wipe cotton futilely and wet wipe cotton, and T type groove and T type piece block are connected.
Further optimizing the technical scheme, U-shaped grooves are formed in the outer sides of the dry wiping cotton and the wet wiping cotton.
Further optimize this technical scheme, flexible loop bar is established to three, and every section flexible loop bar is fixed through limit button stretches out and draws back.
Further optimize this technical scheme, the lower extreme fixedly connected with stopper of flexible loop bar, the lateral wall fixedly connected with hexagonal spiral shell piece of flexible loop bar.
Further optimize this technical scheme, the lateral wall of clean board and the lateral wall of auxiliary base all fixedly connected with handle.
Compared with the prior art, the invention provides a blackboard cleaning device for middle schools, which has the following beneficial effects:
1. according to the blackboard cleaning device for middle school, the first wiping process is carried out through the wet wiping cotton when chalk handwriting on the blackboard is wiped through the dry wiping cotton and the wet wiping cotton, because the moisture in the wet wiping cotton is moist, dust flying is avoided during wiping, diseases caused by harm of dust sucked into a human body to the human body during wiping of the original blackboard are prevented, the wet wiping cotton is wiped through the dry wiping cotton after wiping, the air drying speed of the blackboard surface is accelerated, and meanwhile, the wiping cleanliness is improved.
2. This blackboard cleaning device for middle school through clean base, fixed slot, clean board, first block groove, second block groove, slider, spout, T type piece and T type groove, utilizes slider and the spout of fixed slot both sides can be relaxed to lift off clean board, take out again dry cotton and wet cotton of wiping from T type piece after lift off and wash, has made things convenient for the washing to cleaning device, has avoided the dust to save too much, influences and wipes the blackboard again and leaves the trace after.
3. This blackboard cleaning device for middle school through auxiliary base, accomodate groove, swivel nut, flexible loop bar and pivot, utilizes the flexible loop bar of auxiliary base upper end can the height of fixed clean base, then drives the handwriting on the clean base to the blackboard through auxiliary base and clear away, has prevented the unable problem of erasing in the corner of eminence on the blackboard, can also pack up the flexible loop bar through the screw thread rotation of lower half and advance accomodate the inslot portion when not using, has saved the space, convenient to use.
Drawings
FIG. 1 is a schematic view of a blackboard cleaning device for learning in the present invention;
FIG. 2 is a cross-sectional view of a cleaning base of the blackboard cleaning device for learning in accordance with the present invention;
FIG. 3 is an exploded view of a cleaning base of the blackboard cleaning device for learning in accordance with the present invention;
FIG. 4 is a cross-sectional view of a cleaning base of the blackboard cleaning device for learning in accordance with the present invention;
FIG. 5 is a front view of a cleaning base of the blackboard cleaning device for learning in accordance with the present invention;
FIG. 6 is a sectional view of the auxiliary base of the blackboard cleaning device for learning in accordance with the present invention;
FIG. 7 is an enlarged view of the portion A of the blackboard cleaning device for learning according to the present invention.
In the figure: 1. a blackboard body; 2. a slide way is arranged; 3. an upper pulley; 4. a guide rod; 5. a lower pulley; 6. a guide groove; 7. a glidepath; 8. cleaning a base; 9. a guide hole; 10. a buffer spring; 11. a fixing plate; 12. a fixing groove; 13. a cleaning plate; 14. a first engagement groove; 15. a second engagement groove; 16. a limiting plate; 17. dry wiping cotton; 18. wet cotton wiping; 19. inserting blocks; 20. a spring cavity; 21. a telescopic spring; 22. a clamping block; 23. a limiting hole; 24. an auxiliary base; 25. a storage groove; 26. a screw sleeve; 27. a telescopic loop bar; 28. a rotating shaft; 29. an arc groove; 30. a chute; 31. a slide block; 32. a T-shaped block; 33. a T-shaped groove; 34. a limiting block; 35. hexagonal screw blocks; 36. a handle.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, a blackboard cleaning device for middle school comprises a blackboard body 1, an upper slideway 2 is provided at the upper end of the blackboard body 1, an upper pulley 3 is connected in a rolling manner in the upper slideway 2, a guide rod 4 is connected in the outer side of the upper pulley 3 in a rolling manner through a ball bearing, a lower pulley 5 is fixedly connected in the lower end of the guide rod 4, a guide groove 6 is provided at the outer side of the lower end of the blackboard body 1, a lower slideway 7 is provided in the guide groove 6, a lower pulley 5 is connected in a rolling manner in the lower slideway 7, a cleaning base 8 is connected in a sliding manner in the outer side of the guide rod 4, a guide hole 9 is provided in the cleaning base 8, a buffer spring 10 is fixedly connected in the side wall of the cleaning base 8, a fixing plate 11 is fixedly connected in the side end of the buffer spring 10, a fixing groove 12 is provided in the inner side of the fixing plate 11, a cleaning plate 13 is movably connected in the fixing groove 12, the front of the cleaning plate 13 is provided with a first clamping groove 14 and a second clamping groove 15, the lower ends of the first clamping groove 14 and the second clamping groove 15 are fixedly connected with a limit plate 16, the inside of the first clamping groove 14 is movably connected with dry wiping cotton 17, the inside of the second clamping groove 15 is movably connected with wet wiping cotton 18, the lower ends of the dry wiping cotton 17 and the wet wiping cotton 18 are movably connected with the limit plate 16, the dry wiping cotton 17 and the wet wiping cotton 18 are movably connected with the outer surface of the blackboard body 1, the lower end of the cleaning plate 13 is fixedly connected with an inserting block 19, the right side of the inserting block 19 is provided with a spring cavity 20, the inside of the spring cavity 20 is fixedly connected with a telescopic spring 21, the end part of the telescopic spring 21 is fixedly connected with a clamping block 22, the side wall of the fixing plate 11 is provided with a limit hole 23, the limit hole 23 is in clamping connection with the clamping block 22, the outer side of the guide rod 4 is slidingly connected with an auxiliary base 24, and auxiliary base 24 also has offered storage tank 25 through guiding hole 9 and guide bar 4 sliding connection in the inside of auxiliary base 24, auxiliary base 24's upper end fixedly connected with swivel nut 26, swivel nut 26's inside threaded connection has flexible loop bar 27, flexible loop bar 27 includes movable rod and sleeve pipe, the one end of movable rod is located the sleeve pipe inside, thereby make its inside size constantly change of sleeve pipe realize stretching out and drawing back through pulling the movable rod, and flexible loop bar 27 swing joint is in storage tank 25's inside, flexible loop bar 27's upper end fixedly connected with pivot 28, and pivot 28 fixed connection is at clean base 8's lower extreme, and pivot 28 and clean base 8 rotate and be connected.
Specifically, the guide rods 4 are provided with two guide rods, and the corresponding upper pulleys 3 and lower pulleys 5 are provided with two guide rods, so that the structure of the cleaning device is enhanced.
Specifically, the upper half part of the left end of the guide groove 6 is provided with an arc groove 29 corresponding to the lower pulley 5, the diameter of the arc groove 29 is 1.3 times larger than that of the lower pulley 5, and the arc grooves 29 are two, so that the whole device is convenient to detach.
Specifically, the sliding grooves 30 are formed in two sides of the inside of the fixed groove 12, the sliding blocks 31 are arranged on two sides of the cleaning plate 13, and the cleaning plate 13 is slidably connected with the sliding blocks 31 in the inside of the fixed groove 12 through the sliding grooves 30, so that the cleaning plate 13 can be mounted conveniently.
Specifically, the T-shaped blocks 32 are fixedly connected to two sides of the inside of the first clamping groove 14 and the second clamping groove 15, the T-shaped grooves 33 are formed in two sides of the dry wiping cotton 17 and the wet wiping cotton 18, and the T-shaped grooves 33 are connected with the T-shaped blocks 32 in a clamping manner, so that the dry wiping cotton 17 and the wet wiping cotton 18 can be disassembled.
Specifically, U-shaped grooves are formed in the outer sides of the dry wiping cotton 17 and the wet wiping cotton 18, so that the wiping cleanliness is improved.
Specifically, the telescopic loop bars 27 are three sections, and each section of telescopic loop bar 27 is fixed in a telescopic manner through the limiting button, so that the telescopic loop bars 27 are fixed in a telescopic manner. .
Specifically, the lower extreme fixedly connected with stopper 34 of flexible loop bar 27, the lateral wall fixedly connected with hexagonal screw 35 of flexible loop bar 27 is favorable to rotatory flexible loop bar 27.
Specifically, the side walls of the cleaning plate 13 and the side walls of the auxiliary base 24 are fixedly connected with handles 36, so that the operation of the device body is facilitated.
When the blackboard eraser is used, the guide rod 4 can be used for enabling the cleaning base 8 to move up and down to wipe, the guide rod 4 and the cleaning base 8 can be used for enabling the guide rod 3 and the lower pulley 5 to move left and right to wipe, when chalk handwriting on the blackboard is erased, the first wiping procedure is carried out through the wet wiping cotton 18, because the wet wiping cotton 18 contains moisture, dust flying is avoided during erasing, dust is prevented from being sucked into a human body to cause diseases during erasing, the wet wiping cotton 18 is wiped through the dry wiping cotton 17 after being wiped, the air drying speed of the surface of the blackboard is accelerated, meanwhile, the wiping cleanliness is improved, if the blackboard is not wiped cleanly, the fixing plate 11 can be lightly pressed, the dry wiping cotton 17 and the wet wiping cotton 18 are more attached to the blackboard, the friction force between the dry wiping cotton 17 and the wet wiping cotton 18 is increased, therefore the blackboard is cleaned more effectively, and the U-shaped grooves on the sides of the dry wiping cotton 17 and the wet wiping cotton 18 can improve the wiping efficiency, and the blackboard is cleaner. The cleaning plate 13 can be easily detached by utilizing the sliding blocks 31 and the sliding grooves 30 on the two sides of the fixed groove 12, the dry wiping cotton 17 and the wet wiping cotton 18 are pulled out from the T-shaped block 32 to be cleaned after being detached, so that cleaning of the cleaning device is facilitated, excessive dust accumulation is avoided, trace is left after the blackboard is cleaned again, the cleaning plate 13 is installed inside the fixed groove 12 after cleaning is finished, the clamping block 22 at the bottom of the cleaning plate 13 is clamped inside the limiting hole 23 through the telescopic spring 21, displacement of the cleaning plate 13 during operation is prevented, the telescopic sleeve rod 27 at the upper end of the auxiliary base 24 can be used for fixing the height of the cleaning base 8, handwriting on the blackboard is driven to be cleaned by the auxiliary base 24, the problem that the corner at the upper part of the blackboard cannot be erased is avoided, the telescopic sleeve rod 27 can be retracted into the storage groove 25 through threads at the lower half part when the cleaning device is not used, space is saved, and the cleaning device is convenient to use.
In summary, according to the blackboard cleaning device for middle school, the first wiping process is performed through the wet wiping cotton 18 when chalk handwriting on a blackboard is wiped through the dry wiping cotton 17 and the wet wiping cotton 18, because moisture contained in the wet wiping cotton 18 is moist, dust flying is avoided during wiping, diseases caused by the fact that dust is inhaled into a human body to cause harm are prevented when the original blackboard is wiped, the wet wiping cotton 18 wipes through the dry wiping cotton 17 after wiping, the air drying speed of the surface of the blackboard is accelerated, and meanwhile, the wiping cleanliness is improved; the cleaning base 8, the fixing groove 12, the cleaning plate 13, the first clamping groove 14, the second clamping groove 15, the sliding block 31, the sliding groove 30, the T-shaped block 32 and the T-shaped groove 33 are utilized, the sliding block 31 and the sliding groove 30 on two sides of the fixing groove 12 can be utilized to easily detach the cleaning plate 13, and the dry wiping cotton 17 and the wet wiping cotton 18 are pulled out of the T-shaped block 32 to be cleaned after being detached, so that the cleaning device is convenient to clean, excessive dust accumulation is avoided, and trace is left after the blackboard is wiped again; through auxiliary base 24, accomodate groove 25, swivel nut 26, flexible loop bar 27 and pivot 28, utilize the flexible loop bar 27 of auxiliary base 24 upper end can the fixed height of clean base 8, then drive the handwriting on the clean base 8 to the blackboard through auxiliary base 24 and clear away, prevented the unable problem of erasing in the corner of eminence on the blackboard, can also pack up the flexible loop bar 27 through the screw thread rotation of lower half into accomodate inslot 25 when not using inside, saved the space, convenient to use.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. Blackboard cleaning device for middle school, including blackboard body (1), its characterized in that: the utility model discloses a blackboard body, including blackboard body (1), upper slide (2) has been seted up to the upper end of blackboard body (1), the inside roll connection of upper slide (2) has upper pulley (3), upper pulley (3) outside inside is connected with guide bar (4) through ball bearing rotation, the lower extreme fixedly connected with lower pulley (5) of guide bar (4), guiding groove (6) have been seted up in the lower extreme outside of blackboard body (1), lower slide (7) have been seted up to the inside of guiding groove (6), and the inside roll connection of lower slide (7) has lower pulley (5), the outside sliding connection of guide bar (4) has clean base (8), guiding hole (9) have been seted up to the inside of clean base (8), and guiding hole (9) and guide bar (4) sliding connection, the lateral wall fixedly connected with buffer spring (10) of clean base (8), the lateral end fixedly connected with fixed plate (11) of buffer spring (10), fixed slot (12) have been seted up in the inside of fixed plate (12), inside swing joint (13) of fixed slot (12) has first clamping groove (13) and second clamping groove (14) have, first clamping groove (15) and second clamping groove (14), the inside swing joint of first block groove (14) has futilely to wipe cotton (17), the inside swing joint of second block groove (15) has wet cotton (18) of wiping, and futilely wipe cotton (17) and wet cotton (18)'s lower extreme all with limiting plate (16) swing joint, and futilely wipe cotton (17) and wet cotton (18) all with blackboard body (1)'s surface swing joint, the lower extreme fixedly connected with inserted block (19) of cleaning plate (13), spring chamber (20) have been seted up on the right side of inserted block (19), the inside fixedly connected with telescopic spring (21) of spring chamber (20), the tip fixedly connected with block (22) of telescopic spring (21), limiting hole (23) and block (22) block connection have been seted up to the lateral wall of fixed plate (11), and auxiliary base (24) are also connected with the outside sliding connection of guide bar (4) through guide bar (9) and guide bar (24), and auxiliary base (24) are equipped with in the inside fixedly connected with telescopic sleeve (25) of telescopic sleeve (27), the telescopic sleeve (25) is accomodate in the inside fixedly connected with telescopic sleeve (25), the upper end of the telescopic sleeve rod (27) is fixedly connected with a rotating shaft (28), the rotating shaft (28) is fixedly connected to the lower end of the cleaning base (8), and the rotating shaft (28) is rotationally connected with the cleaning base (8).
2. The blackboard cleaning device for middle school according to claim 1, characterized in that: the guide rods (4) are arranged in two, and the corresponding upper pulleys (3) and lower pulleys (5) are respectively arranged in two.
3. The blackboard cleaning device for middle school according to claim 1, characterized in that: the upper half part of the left end of the guide groove (6) is provided with arc grooves (29) corresponding to the lower pulleys (5), the diameter of each arc groove (29) is 1.3 times larger than that of each lower pulley (5), and two arc grooves (29) are arranged.
4. The blackboard cleaning device for middle school according to claim 1, characterized in that: sliding grooves (30) are formed in two sides of the inside of the fixed groove (12), sliding blocks (31) are arranged on two sides of the cleaning plate (13), and the cleaning plate (13) is connected with the sliding blocks (31) in the fixed groove (12) in a sliding mode through the sliding grooves (30).
5. The blackboard cleaning device for middle school according to claim 1, characterized in that: t-shaped blocks (32) are fixedly connected to the two sides of the inside of the first clamping groove (14) and the two sides of the inside of the second clamping groove (15), T-shaped grooves (33) are formed in the two sides of the dry wiping cotton (17) and the wet wiping cotton (18), and the T-shaped grooves (33) are connected with the T-shaped blocks (32) in a clamping mode.
6. The blackboard cleaning device for middle school according to claim 1, characterized in that: u-shaped grooves are formed in the outer sides of the dry wiping cotton (17) and the wet wiping cotton (18).
7. The blackboard cleaning device for middle school according to claim 1, characterized in that: the telescopic loop bars (27) are three sections, and each section of telescopic loop bar (27) is fixed in a telescopic way through a limiting button.
8. The blackboard cleaning device for middle school according to claim 1, characterized in that: the lower extreme fixedly connected with stopper (34) of flexible loop bar (27), the lateral wall fixedly connected with hexagonal spiral shell piece (35) of flexible loop bar (27).
9. The blackboard cleaning device for middle school according to claim 1, characterized in that: the side wall of the cleaning plate (13) and the side wall of the auxiliary base (24) are fixedly connected with handles (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049673.9A CN109501496B (en) | 2019-01-18 | 2019-01-18 | Blackboard cleaning device for middle school |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049673.9A CN109501496B (en) | 2019-01-18 | 2019-01-18 | Blackboard cleaning device for middle school |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109501496A CN109501496A (en) | 2019-03-22 |
| CN109501496B true CN109501496B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910049673.9A Active CN109501496B (en) | 2019-01-18 | 2019-01-18 | Blackboard cleaning device for middle school |
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| Country | Link |
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| CN (1) | CN109501496B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113561685A (en) * | 2021-06-30 | 2021-10-29 | 深圳市欣盛电子科技有限公司 | Electric eraser dust collection all-in-one machine with guiding function |
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| US6944904B1 (en) * | 2003-08-11 | 2005-09-20 | Gaylord A Williams | Chalkboard cleaning apparatus with a fluid reservoir |
| CN201073882Y (en) * | 2007-04-13 | 2008-06-18 | 谢雪 | Blackboard eraser |
| CN202147521U (en) * | 2011-08-08 | 2012-02-22 | 王诗淇 | Convenient blackboard eraser system |
| CN103909774A (en) * | 2013-12-17 | 2014-07-09 | 苏州奥然日用品有限公司 | Novel quick erased blackboard |
| CN204801323U (en) * | 2015-07-08 | 2015-11-25 | 张显民 | Blackboard is used in teaching |
| CN207128458U (en) * | 2017-04-10 | 2018-03-23 | 成都师范学院 | A kind of teaching aid with Telescopic |
| CN209505300U (en) * | 2019-01-18 | 2019-10-18 | 杨晨曦 | A kind of middle school's blackboard cleaning device |
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2019
- 2019-01-18 CN CN201910049673.9A patent/CN109501496B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6944904B1 (en) * | 2003-08-11 | 2005-09-20 | Gaylord A Williams | Chalkboard cleaning apparatus with a fluid reservoir |
| CN201073882Y (en) * | 2007-04-13 | 2008-06-18 | 谢雪 | Blackboard eraser |
| CN202147521U (en) * | 2011-08-08 | 2012-02-22 | 王诗淇 | Convenient blackboard eraser system |
| CN103909774A (en) * | 2013-12-17 | 2014-07-09 | 苏州奥然日用品有限公司 | Novel quick erased blackboard |
| CN204801323U (en) * | 2015-07-08 | 2015-11-25 | 张显民 | Blackboard is used in teaching |
| CN207128458U (en) * | 2017-04-10 | 2018-03-23 | 成都师范学院 | A kind of teaching aid with Telescopic |
| CN209505300U (en) * | 2019-01-18 | 2019-10-18 | 杨晨曦 | A kind of middle school's blackboard cleaning device |
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| Publication number | Publication date |
|---|---|
| CN109501496A (en) | 2019-03-22 |
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