CN213501581U - Blackboard eraser convenient for dust cleaning for teaching - Google Patents
Blackboard eraser convenient for dust cleaning for teaching Download PDFInfo
- Publication number
- CN213501581U CN213501581U CN202022076849.0U CN202022076849U CN213501581U CN 213501581 U CN213501581 U CN 213501581U CN 202022076849 U CN202022076849 U CN 202022076849U CN 213501581 U CN213501581 U CN 213501581U
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- China
- Prior art keywords
- shell
- blackboard eraser
- magnet
- rack
- handle
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- 239000000428 dust Substances 0.000 title claims abstract description 16
- 238000004140 cleaning Methods 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a blackboard eraser convenient for dust cleaning for teaching, which comprises a shell, a sponge block and an adjusting structure, wherein the adjusting structure is arranged in the shell, and the lower surface of the shell is detachably connected with the sponge block; the utility model discloses a be equipped with first magnet and sponge piece, and through pasting first magnet and second magnet, when separating sponge piece and shell, only need with second magnet from first magnet take off can, not only make sponge piece and shell can separate, and change respectively, the resource has been practiced thrift, and can separate the powder on the clearance sponge piece with the shell with sponge piece, the clearance is more convenient and thorough, through rotating the handle, can prolong the holistic length of blackboard eraser, can be convenient for clean up the top of blackboard, bring the convenience for the user, when not using the blackboard eraser at ordinary times, can rotate the handle to opposite direction, with the inside of rack shrink cavity into, be convenient for store the blackboard eraser.
Description
Technical Field
The utility model relates to a blackboard eraser technical field specifically is a blackboard eraser convenient to clearance dust for teaching.
Background
The blackboard is not particularly referred to black face, it is a plane that can write repeatedly to say in the traditional meaning, the face is hard, many be used for the teaching, mostly be black, dark green, white, what erase the content of writing on the blackboard is the blackboard eraser, the blackboard eraser is the same teaching aid that is indispensable in our daily study, the kind of dustless blackboard eraser is also many at present, including manual blackboard eraser and automatic blackboard eraser, some reduce the wafing of chalk dust through changing the more rich erasing handle of electrostatic absorption power of traditional blackboard eraser, some reduce the wafing of chalk dust through using chalk dust collection device, however, present blackboard eraser still has some inadequacies, for example:
most of blackboard erasers in the prior art are composed of sponges and shells, the sponges are adhered to the shells, the sponges are easily worn and torn off in the long-time use process, the shells and the sponge blocks can only be discarded together, or in the use process, the plastic blackboard erasers drop on the ground, the shells can only be discarded together with the sponge blocks after being broken, resources are wasted, the sponge blocks and the shells are not convenient to separate, and powder on the sponge blocks is difficult to clean.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a blackboard eraser convenient to clearance dust for teaching to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the blackboard eraser convenient to clean dust for teaching comprises a shell, a sponge block and an adjusting structure, wherein the adjusting structure is arranged inside the shell, and the sponge block is detachably connected to the lower surface of the shell.
Preferably, a groove is formed in the middle of the lower surface of the shell, a first magnet is pasted on the inner wall of the groove, a fixing plate is pasted on the middle of the upper surface of the sponge block, a second magnet is pasted on one end of the fixing plate, and the first magnet is pasted with the second magnet.
Preferably, the adjusting structure further comprises a rack and a gear, a cavity is formed in the upper side of the shell, the rack is inserted into the cavity, a handle is inserted into one side of the shell close to one end of the shell, one end of the handle penetrates through the shell and is fixedly connected with the gear through a bolt, the gear is meshed with the rack, the handle is rotatably connected with the shell, a sliding groove is formed in the other side of the rack, a connecting rod is fixedly connected with one end of the cavity close to one end of the cavity, a sliding block is fixedly connected with one end of the connecting rod through a bolt, the sliding block is slidably connected with the sliding groove, an opening is formed in one side of the shell, one end of the rack penetrates through the opening, and the rack is slidably connected with the opening.
Preferably, a through hole is formed in one side of the shell, one end of the handle penetrates through the through hole, and the diameter of the through hole is not smaller than that of the handle.
Preferably, the handle is of a T-shaped structure.
Preferably, the opening is of a quadrilateral structure, the opening is communicated with the cavity, and the side length of the rack is not larger than that of the opening.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a through being equipped with first magnet, second magnet and sponge piece to through pasting first magnet and second magnet, when separating sponge piece and shell, only need take the second magnet off from first magnet can, not only make sponge piece and shell separate, and change respectively, practiced thrift the resource, and can separate the powder on the clearance sponge piece with the shell sponge piece, the clearance is more convenient and thorough, simultaneously through set up recess and cavity on the shell, lightened the whole weight of blackboard eraser, further practiced thrift the resource; through being equipped with the rack, gear and handle, it is too high when the height of blackboard, and when the top of blackboard is not convenient for clear up, through rotating the handle, the handle drives gear revolve, because gear and rack meshing, thereby make the gear drive the rack and remove, after the one end of rack passed opening one end distance, the stall handle, can prolong the holistic length of blackboard eraser, can be convenient for clear up the top of blackboard, bring the convenience for the user, when not using the blackboard eraser at ordinary times, can rotate the handle to opposite direction, shrink the inside of cavity into with the rack, be convenient for store the blackboard eraser.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall cross-sectional structure of the present invention;
FIG. 3 is a schematic side view of the half-section structure of the present invention;
fig. 4 is a schematic side view of the present invention.
In the figure: 1-a housing; 11-a cavity; 12-a groove; 13-a first magnet; 14-a connecting rod; 15-a slide block; 16-opening; 2-sponge block; 21-a second magnet; 22-a fixing plate; 3-a regulating structure; 31-a rack; 32-a handle; 33-gear wheel; 34-chute.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a blackboard eraser convenient for dust cleaning for teaching comprises a shell 1, a sponge block 2 and an adjusting structure 3, wherein the adjusting structure 3 is arranged inside the shell 1, the sponge block 2 is detachably connected to the lower surface of the shell 1, a groove 12 is formed in the middle of the lower surface of the shell 1, the groove 12 plays a limiting role in a fixing plate 22, so that when a blackboard is wiped, if resistance is too large, relative sliding between a first magnet 13 and a second magnet 21 is prevented, a first magnet 13 is adhered to the inner wall of the groove 12, the fixing plate 22 is adhered to the middle of the upper surface of the sponge block 2, a second magnet 21 is adhered to one end of the fixing plate 22, the first magnet 13 is adhered to the second magnet 21, the first magnet 13 and the second magnet 21 are adhered, when the sponge block 2 is separated from the shell 1, the second magnet 21 only needs to be taken away from the first magnet 13, the blackboard eraser comprises a shell 1, a sponge block 2, a groove 12, a cavity 11, a handle 32, a gear 33, a gear 31, a sliding groove 34, a sliding groove 31 and a sliding groove 31, wherein the sponge block 2 and the shell 1 can be separated and respectively replaced, resources are saved, the sponge block 2 and the shell 1 can be separated to clean powder on the sponge block 2, the cavity 12 and the cavity 11 are formed in the shell 1, the overall weight of the blackboard eraser is reduced, and the resources are further saved, slider 15 slides on spout 34, can play spacing effect to rack 31, one side of cavity 11 is close to one end department and passes through bolt fixedly connected with connecting rod 14, bolt fixedly connected with slider 15 is passed through to the one end of connecting rod 14, slider 15 with spout 34 sliding connection, opening 16 has been seted up to one side of shell 1, the one end of rack 31 is passed opening 16, rack 31 with opening 16 sliding connection, when the height of blackboard is too high, and the top of blackboard is not convenient for when clearing up, through rotating handle 32, handle 32 drives gear 33 and rotates, because gear 33 and rack 31 meshing to make gear 33 drive rack 31 remove, after the one end of rack 31 passes opening 16 one end distance, stall handle 32 can prolong the holistic length of blackboard eraser, can be convenient for clear up the top of blackboard, the blackboard eraser storage rack is convenient for a user, when the blackboard eraser storage rack is not used at ordinary times, the handle 32 can be rotated in the opposite direction to retract the rack 31 into the cavity 11, the blackboard eraser storage rack is convenient for storage, a through hole is formed in one side of the shell 1, one end of the handle 32 penetrates through the through hole, the diameter of the through hole is not smaller than that of the handle 32, the handle 32 is of a T-shaped structure, the opening 16 is of a quadrilateral structure, the opening 16 is communicated with the cavity 11, the side length of the rack 31 is not larger than that of the opening 16, and the rack 31 can penetrate through the opening 16.
The working principle is as follows: when the blackboard eraser is used, the fixing plate 22 can be adhered and fixed with the shell 1 by adhering the first magnet 13 and the second magnet 21, the blackboard eraser can be used, when the sponge block 2 is separated from the shell 1, only the second magnet 21 needs to be taken away from the first magnet 13, the sponge block 2 can be separated from the shell 1 and respectively replaced, resources are saved, the sponge block 2 can be separated from the shell 1 to clean powder on the sponge block 2 conveniently and thoroughly, meanwhile, the whole weight of the blackboard eraser is reduced by arranging the groove 12 and the cavity 11 on the shell 1, resources are further saved, when the height of the blackboard is too high and the top end of the blackboard is inconvenient to clean, the handle 32 rotates to drive the gear 33 to rotate, and the gear 33 is meshed with the rack 31, so that the gear 33 drives the rack 31 to move, when one end of the rack 31 passes through one end of the opening 16, the handle 32 stops rotating, the whole length of the blackboard eraser can be prolonged, the top end of the blackboard can be conveniently cleaned, convenience is brought to a user, when the blackboard eraser is not used at ordinary times, the handle 32 can be rotated in the opposite direction, the rack 31 is retracted into the cavity 11, and the blackboard eraser is convenient to store.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a blackboard eraser convenient to clearance dust for teaching which characterized in that includes:
a housing (1);
a sponge block (2);
an adjustment structure (3);
the adjustable sponge block is characterized in that an adjusting structure (3) is installed inside the shell (1), and a sponge block (2) is detachably connected to the lower surface of the shell (1).
2. The blackboard eraser convenient for dust cleaning for teaching according to claim 1, characterized in that: the lower surface middle part of shell (1) is seted up flutedly (12), first magnet (13) have been pasted to the inner wall of recess (12), fixed plate (22) have been pasted in the upper surface middle part of sponge piece (2), second magnet (21) have been pasted to the one end of fixed plate (22), first magnet (13) with second magnet (21) paste.
3. The blackboard eraser convenient for dust cleaning for teaching according to claim 1, characterized in that: the adjustment structure (3) further comprises:
a rack (31);
a gear (33);
wherein a cavity (11) is formed in one upper side of the shell (1), a rack (31) is inserted into the cavity (11), a handle (32) is inserted into one side of the shell (1) close to one end, one end of the handle (32) penetrates through the shell (1) and is fixedly connected with a gear (33) through a bolt, the gear (33) is meshed with the rack (31), the handle (32) is rotatably connected with the shell (1), a sliding groove (34) is formed in the other side of the rack (31), a connecting rod (14) is fixedly connected with one end of the cavity (11) close to one end through a bolt, a sliding block (15) is fixedly connected with one end of the connecting rod (14) through a bolt, the sliding block (15) is slidably connected with the sliding groove (34), an opening (16) is formed in one side of the shell (1), and one end of the rack (31) penetrates through the opening (16), the rack (31) is connected with the opening (16) in a sliding way.
4. A blackboard eraser for teaching convenience in cleaning dust according to claim 3, wherein: one side of the shell (1) is provided with a through hole, one end of the handle (32) penetrates through the through hole, and the diameter of the through hole is not smaller than that of the handle (32).
5. A blackboard eraser for teaching convenience in cleaning dust according to claim 3, wherein: the handle (32) is of a T-shaped structure.
6. A blackboard eraser for teaching convenience in cleaning dust according to claim 3, wherein: the opening (16) is of a quadrilateral structure, the opening (16) is communicated with the cavity (11), and the side length of the rack (31) is not larger than that of the opening (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022076849.0U CN213501581U (en) | 2020-09-21 | 2020-09-21 | Blackboard eraser convenient for dust cleaning for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022076849.0U CN213501581U (en) | 2020-09-21 | 2020-09-21 | Blackboard eraser convenient for dust cleaning for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213501581U true CN213501581U (en) | 2021-06-22 |
Family
ID=76448907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022076849.0U Expired - Fee Related CN213501581U (en) | 2020-09-21 | 2020-09-21 | Blackboard eraser convenient for dust cleaning for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213501581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115120147A (en) * | 2022-07-22 | 2022-09-30 | 郑小东 | Anti-pollution building outer wall cleaning equipment and protective structure thereof |
-
2020
- 2020-09-21 CN CN202022076849.0U patent/CN213501581U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115120147A (en) * | 2022-07-22 | 2022-09-30 | 郑小东 | Anti-pollution building outer wall cleaning equipment and protective structure thereof |
| CN115120147B (en) * | 2022-07-22 | 2024-04-30 | 郑小东 | Pollution-proof building outer wall cleaning equipment and protection structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210622 |