CN209775972U - Special blackboard eraser for lifting blackboard - Google Patents
Special blackboard eraser for lifting blackboard Download PDFInfo
- Publication number
- CN209775972U CN209775972U CN201920271975.6U CN201920271975U CN209775972U CN 209775972 U CN209775972 U CN 209775972U CN 201920271975 U CN201920271975 U CN 201920271975U CN 209775972 U CN209775972 U CN 209775972U
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- CN
- China
- Prior art keywords
- blackboard
- blackboard eraser
- lifting
- eraser
- special
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- 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.)
- Expired - Fee Related
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Abstract
the utility model provides a special blackboard eraser of over-and-under type blackboard relates to the teaching aid field, has solved the technical problem that the blackboard needs dependent manual operation of wiping. The special blackboard eraser for the lifting blackboard comprises a frame, a blackboard eraser and a blackboard eraser assembly, wherein the frame consists of two supporting parts arranged on the left side and the right side of the lifting blackboard, a lifting assembly capable of driving the two supporting parts to lift and a supporting plate connected with the front ends of the two supporting parts; the blackboard eraser is connected with the blackboard eraser assembly, the blackboard eraser assembly is connected with the frame and can move back and forth relative to the lifting blackboard, and the blackboard eraser assembly can drive the blackboard eraser to be in contact with the lifting blackboard so as to erase the blackboard. The utility model discloses simple structure can install and use on current over-and-under type blackboard, makes things convenient for the efficient to clear away the typeface on the blackboard.
Description
Technical Field
The utility model belongs to the technical field of teaching aid and specifically relates to a special blackboard eraser of over-and-under type blackboard is related to.
Background
The blackboard eraser is a teaching appliance for erasing a blackboard, and the traditional blackboard eraser adopts manpower to erase chalk writings on the blackboard, so that not only is dust large, but also a large amount of labor is wasted. The lifting blackboard is generally used in the market at present, and generally comprises a front blackboard and a rear blackboard, and the lifting blackboard is increased in area due to the fact that the lifting blackboard comprises the front blackboard and the rear blackboard, so that although the times of erasing the blackboard are reduced, the problem of labor waste of erasing the blackboard is not solved effectively all the time, and no blackboard eraser capable of reducing labor intensity and used for the lifting blackboard is available in the market at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a special blackboard eraser of over-and-under type blackboard to solve the big technical problem of the manpower intensity of labour who exists among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
The utility model provides a special blackboard eraser for a lifting blackboard, which comprises a frame, a lifting assembly and a support plate, wherein the frame consists of two support parts arranged at the left side and the right side of the lifting blackboard, the lifting assembly can drive the two support parts to lift, and the support plate is connected with the front ends of the two support parts; the blackboard eraser is connected with the blackboard eraser assembly, the blackboard eraser assembly is connected with the frame and can move back and forth relative to the lifting blackboard, and the blackboard eraser assembly can drive the blackboard eraser to be in contact with the lifting blackboard so as to erase the blackboard cleanly.
Further, the blackboard eraser and the blackboard eraser assembly are provided with two groups.
Furthermore, the blackboard eraser assembly comprises a blackboard eraser fixing shaft, a sliding assembly and a driving part, the blackboard eraser is connected with the blackboard eraser fixing shaft, and two ends of the blackboard eraser fixing shaft are connected with the two supporting parts through the two groups of sliding assemblies and can move back and forth relative to the two supporting parts; the driving part is arranged on the supporting plate and can drive the blackboard eraser to be in contact with the lifting blackboard so as to erase the blackboard cleanly.
Furthermore, the sliding assembly comprises a guide rail arranged on the supporting part, a limiting structure arranged on the guide rail and a pulley, the pulley can slide back and forth on the guide rail, the pulley is connected with the blackboard eraser fixing shaft, and the limiting structure can limit the pulley to move.
Furthermore, the sliding assembly comprises a sliding rail arranged on the supporting portion, a sliding block and a limiting structure arranged on the supporting portion, the sliding block is connected with the blackboard eraser fixing shaft, the sliding block slides back and forth on the sliding rail, and the limiting structure can limit the sliding of the sliding block.
Further, the driving part is at least two telescopic air cylinders.
further, the driving part is formed by connecting a plurality of springs in parallel.
Furthermore, the dust collector also comprises a plurality of miniature dust collectors which are arranged on the supporting plate.
Furthermore, the blackboard eraser comprises a plurality of same small blackboard erasers which are arranged side by side from left to right, the small blackboard erasers are sleeved on the fixed shaft through a sleeve, and the small blackboard erasers can rotate by taking the fixed shaft as an axis.
Further, the blackboard eraser comprises a second blackboard eraser and a second assembly, wherein the second assembly comprises a clamping part and a fastening part, the clamping part is connected with a front blackboard of the lifting blackboard, the fastening part is connected with the second blackboard eraser, and the fastening part can control the second blackboard eraser to move back and forth so as to erase a rear blackboard.
The utility model has the advantages that: the blackboard eraser special for the lifting blackboard is simple in structure, only needs to be fixedly connected with a wall body during installation, is convenient to install, only needs to take the limiting structure and open the air cylinder, can be erased by pushing and pulling the blackboard, and is easy to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic perspective view of a first embodiment of the present invention;
Fig. 2 is a top view of a first embodiment of the present invention;
Fig. 3 is a left side view of a second embodiment of the present invention.
FIG. 1-frame; 11-a support; 12-a support plate; 2, blackboard eraser; 21-a second blackboard eraser; 3-a sliding assembly; 31-a guide rail; 32-a pulley; 33-a limiting structure; 4-a blackboard eraser fixed shaft; 5-a drive member; 51-a cylinder; 6-a lifting assembly; 7-a clamping part; 71-a holding block; 72-a first bolt; 8-a blackboard eraser assembly; 82-a second component; 9-a fastening portion; 91-a fastening plate; 92-second bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the utility model provides a special blackboard eraser for lifting type blackboard, which comprises two supporting parts 11, two supporting plates 12, two blackboard erasers 2 and two blackboard eraser components 8, wherein the two supporting parts 11 are connected with the wall and respectively arranged at the two sides of the lifting type blackboard, the supporting plates 12 are connected with the front ends of the two supporting parts 11 and are enclosed in the front of the lifting type blackboard to form a frame 1;
Between the supporting part 11 and the wall body, a lifting assembly 6 is further arranged in the vertical direction, and the supporting part 11 can move up and down along the vertical direction of the wall body by the lifting assembly 6, so that the frame 1, the blackboard eraser 2 and the blackboard eraser assembly 8 are driven to move up and down to erase the blackboard. The lifting component 6 can drive the screw rod by a motor to drive the supporting part 11 to move up and down, and can also be directly driven by a telescopic cylinder to move up and down or be matched by a guide rail sliding block.
The blackboard eraser assembly 8 comprises a blackboard eraser fixing shaft 4, sliding assemblies 3 and a driving part 5, the blackboard eraser 2 is connected with the blackboard eraser fixing shaft 4, the length of the blackboard eraser 2 is not more than that of a blackboard, and two ends of the blackboard eraser fixing shaft 4 are connected with the two supporting parts 11 through the two groups of sliding assemblies 3 and can move back and forth relative to the two supporting parts 11; the driving part 5 is arranged on the supporting plate 12, the driving part 5 can drive the blackboard eraser 2 to be in contact with the lifting blackboard, and the blackboard is cleaned by pulling the lifting blackboard to move up and down. The sliding assembly 3 comprises a guide rail 31 arranged on the supporting part 11, a limiting structure 33 arranged on the guide rail 31 and a pulley 32, wherein the pulley 32 can slide back and forth on the guide rail 31, the pulley 32 is connected with the blackboard eraser fixing shaft 4, and the limiting structure 33 can limit the pulley 32 to move. The limiting structure 33 may be any structure as long as it can limit the movement of the pulley 32, such as a round pin or a square block inserted in the vertical direction. The pulley 32 can be replaced by a sliding block (not shown), the sliding block can slide back and forth on the guide rail 31, the sliding block is connected with the blackboard eraser fixed shaft 4, and the limiting structure 33 can limit the sliding block to move. The driving member 5 may be any member as long as it can drive the blackboard eraser 2 to move horizontally, and may be, for example, a spring group formed by connecting a plurality of springs in parallel, a hydraulic cylinder, or the like. In the embodiment, the cylinder 51 is selected, and since the front and rear blackboard bodies of the lifting blackboard are considered, the cylinder 51 selects the adjustable stroke cylinder, or the two cylinders 51 with different strokes respectively control the movement of the blackboard eraser. When the front blackboard needs to be wiped, the cylinder 51 with a shorter stroke is selected, so that the blackboard eraser 2 is in contact with the front blackboard to wipe the front blackboard clean, and when the rear blackboard needs to be wiped, the other group of cylinders 51 with a longer stroke is selected. In the wiping process, the two groups of cylinders 51 are not interfered with each other, the two groups of cylinders are not ventilated in a normal state, and the corresponding cylinder is started again according to which group is required to be used. Of course, it is also conceivable to arrange two sets of the blackboard eraser 2 and the blackboard eraser unit 8 in parallel on the support plate 12 to control the erasing of the front and rear blackboards, respectively. At least two air cylinders 51 are provided in consideration of the length of the blackboard.
The cleaning work of the chalk dust is also a big problem in the blackboard erasing process, and a plurality of micro dust collectors (not shown) are further provided on the supporting plate 12 because the chalk dust is very harmful. In addition, a groove with the same length as the supporting plate 12 is formed at the lower edge of the supporting plate 12 for receiving chalk dust.
The blackboard eraser 2 can also be designed to be formed by arranging a plurality of small blackboard erasers side by side from left to right, the small blackboard erasers are sleeved on the blackboard eraser fixing shaft 4 through sleeves, and the small blackboard erasers can rotate by taking the blackboard eraser fixing shaft 4 as an axis.
The utility model discloses work flow as follows: when the front blackboard is wiped, the front blackboard is adjusted to the position corresponding to the blackboard eraser 2, the limiting mechanism 33 is closed, the cylinder 51 is started, the cylinder 51 drives the blackboard eraser fixing shaft 4 to move towards the blackboard along the supporting part 11 until the blackboard eraser 2 is propped against the blackboard, then the lifting blackboard is lifted by pushing the lifting blackboard by hand, and the blackboard is wiped cleanly through the friction force between the blackboard eraser 2 and the blackboard; when the rear blackboard is wiped, the rear blackboard is adjusted to a position corresponding to the blackboard eraser, the limiting mechanism 33 is closed, the air cylinder 51 is started, the air cylinder 51 drives the blackboard eraser fixing shaft 4 to move towards the rear blackboard along the supporting part until the blackboard eraser 2 is propped against the rear blackboard, the lifting assembly is started, the front blackboard is pushed to move, and therefore the blackboard eraser moves along with the front blackboard, and the blackboard is wiped cleanly.
The applicant aims at wiping the rear blackboard, and further provides a design scheme, as shown in fig. 3, a second blackboard eraser 21 and a second assembly 82 are arranged at the top or the bottom of the front blackboard, the second assembly 82 comprises a clamping portion 7 and a fastening portion 9, at least two groups of clamping portions 7 and fastening portions 9 are arranged, the clamping portion 7 consists of a clamping block 71 and a first bolt 72, the clamping portion 7 is used for clamping the front blackboard, the fastening portion 9 consists of a second bolt 92 and a fastening plate 91, threaded holes matched with the second bolt 92 are formed in the back surfaces of the fastening plate 91 and the second blackboard eraser 21, the second bolt 92 penetrates through the threaded hole in the fastening plate 91 to be in threaded connection with the second blackboard eraser 21, and the second blackboard eraser 21 is made to be in contact with the rear blackboard by rotating the second bolt 92 so as to erase the clean rear blackboard. When the rear blackboard needs to be erased, the second blackboard eraser 21 is fixed and the rear blackboard is adjusted to the position needing to be erased, the second bolt 92 is rotated, so that the second blackboard eraser 21 is contacted with the rear blackboard, and the front blackboard is lifted to remove chalk characters on the rear blackboard.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A special blackboard eraser for lifting type blackboards is characterized by comprising
The frame consists of two supporting parts arranged on the left side and the right side of the lifting blackboard, a lifting assembly capable of driving the two supporting parts to lift and a supporting plate connected with the front ends of the two supporting parts;
The blackboard eraser is connected with the blackboard eraser assembly, the blackboard eraser assembly is connected with the frame and can move back and forth relative to the lifting blackboard, and the blackboard eraser assembly can drive the blackboard eraser to be in contact with the lifting blackboard so as to erase the blackboard cleanly.
2. The blackboard eraser special for lifting blackboards according to claim 1, wherein two groups of the blackboard eraser and the blackboard eraser assembly are provided.
3. The blackboard eraser special for the lifting type blackboard according to claim 1 or 2, wherein the blackboard eraser assembly comprises a blackboard eraser fixing shaft, a sliding assembly and a driving part, the blackboard eraser is connected with the blackboard eraser fixing shaft, and two ends of the blackboard eraser fixing shaft are connected with the two supporting parts through the two groups of sliding assemblies and can move back and forth relative to the two supporting parts; the driving part is arranged on the supporting plate and can drive the blackboard eraser to be in contact with the lifting blackboard so as to erase the blackboard cleanly.
4. The special blackboard eraser for lifting type blackboards as claimed in claim 3, wherein the sliding assembly comprises a guide rail arranged on the support part, a limiting structure arranged on the guide rail and a pulley, the pulley can slide back and forth on the guide rail, the pulley is connected with the blackboard eraser fixing shaft, and the limiting structure can limit the movement of the pulley.
5. The special blackboard eraser for lifting type blackboards according to claim 3, wherein the sliding assembly comprises a sliding rail arranged on the supporting portion, a sliding block and a limiting structure arranged on the supporting portion, the sliding block is connected with the blackboard eraser fixing shaft, the sliding block slides back and forth on the sliding rail, and the limiting structure can limit the sliding of the sliding block.
6. The blackboard eraser special for lifting blackboards according to claim 3, wherein the driving part is at least two telescopic cylinders.
7. The blackboard eraser special for lifting blackboards according to claim 3, wherein the driving part is composed of a plurality of springs connected in parallel.
8. The blackboard eraser special for lifting blackboards according to claim 1 or 2, further comprising a plurality of micro dust collectors, wherein the micro dust collectors are arranged on the supporting plate.
9. The blackboard eraser special for lifting blackboards according to claim 3, wherein the blackboard eraser comprises a plurality of same small blackboard erasers arranged side by side from left to right, the small blackboard erasers are sleeved on the fixed shaft through sleeves, and the small blackboard erasers are rotatable by taking the fixed shaft as an axis.
10. The blackboard eraser special for the liftable blackboard according to claim 3, further comprising a second blackboard eraser and a second assembly, wherein the second assembly comprises a clamping part and a fastening part, the clamping part is connected with a front blackboard of the liftable blackboard, the fastening part is connected with the second blackboard eraser, and the fastening part can control the second blackboard eraser to move back and forth to erase a rear blackboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271975.6U CN209775972U (en) | 2019-03-01 | 2019-03-01 | Special blackboard eraser for lifting blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271975.6U CN209775972U (en) | 2019-03-01 | 2019-03-01 | Special blackboard eraser for lifting blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209775972U true CN209775972U (en) | 2019-12-13 |
Family
ID=68796439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920271975.6U Expired - Fee Related CN209775972U (en) | 2019-03-01 | 2019-03-01 | Special blackboard eraser for lifting blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209775972U (en) |
-
2019
- 2019-03-01 CN CN201920271975.6U patent/CN209775972U/en not_active Expired - Fee Related
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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: 20191213 Termination date: 20210301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |