CN210116309U

CN210116309U - Blackboard eraser capable of effectively preventing dust from flying

Info

Publication number: CN210116309U
Application number: CN201920898892.XU
Authority: CN
Inventors: 初子涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-02-28
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses a blackboard eraser that can prevent effectively that dust from flying upward, charge mouth and shift knob including blackboard eraser main part, first baffle, pull board, small-size air exhauster, rechargeable battery, USB, the bottom of blackboard eraser main part is provided with cleans the cloth, the top and the bottom of first baffle set up respectively in the inside up end of blackboard eraser main part and terminal surface down, the lower extreme of gag lever post is located the inside of spacing groove, the grid plate is installed in the top of blackboard eraser main part, rechargeable battery installs in the inside of blackboard eraser main part. This blackboard eraser that can effectively prevent that dust from flying upward can reduce the inside that chalk dust spreads to the classroom all around, and then has reduced the injury of chalk dust to mr and student, and can reduce the number of times that the deashing was dismantled to the filter screen to make things convenient for the use of this blackboard eraser, and can increase the effective area who absorbs chalk dust, and then reduced the probability that chalk dust spreads all around.

Description

Blackboard eraser capable of effectively preventing dust from flying

Technical Field

The utility model relates to an education technique field specifically is a blackboard eraser that can prevent effectively that the dust from flying upward.

Background

The in-process of mr teaching needs write on the blackboard, need wipe the typeface after writing to be convenient for next teaching and use, need use the blackboard eraser when wiping the blackboard, the blackboard eraser can produce chalk dust when wiping the blackboard, and chalk dust can cause huge injury to mr and student's health.

However, most of the existing blackboard erasers do not have the function of autonomously absorbing chalk dust, so that after the blackboard erasers are erased, the chalk dust is scattered in classrooms, and great harm is caused to bodies of teachers and students. Aiming at the problems, innovative design is urgently needed on the basis of the original blackboard eraser.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can effectively prevent blackboard eraser that dust flies upward to solve above-mentioned background art and carry the function that some blackboard erasers do not have autonomic absorption chalk dust, lead to having wiped the blackboard after, chalk dust is scattered in the classroom all around, thereby can cause the problem of huge harm to mr and student's health.

In order to achieve the above object, the utility model provides a following technical scheme: a blackboard eraser capable of effectively preventing dust from flying comprises a blackboard eraser main body, a first baffle, a pull plate, a small-sized exhaust fan, a rechargeable battery, a USB charging port and a switch button, wherein a wiping cloth strip is arranged at the bottom of the blackboard eraser main body, a handle is fixed at the top of the blackboard eraser main body, a dust suction port is formed in the side of the blackboard eraser main body, the top and the bottom of the first baffle are respectively arranged on the upper end surface and the lower end surface in the blackboard eraser main body, the side of the first baffle is connected with one end of a channel, the other end of the channel is positioned outside a through hole, the through hole is reserved on one side of a collecting box, a filter screen is arranged on the other side of the collecting box, the top of the collecting box penetrates through the top of the blackboard eraser main body and is mutually connected with one end of a fixing rod, a limiting rod penetrates, and the spacing groove is seted up at the top of blackboard eraser main part, the lower extreme of pull board runs through in the top of blackboard eraser main part, and the avris of pull board is provided with the brush to the brush is located the outside of collecting box, small-size air exhauster is installed in the inside of blackboard eraser main part, and small-size air exhauster is located the below of grid plate, the grid plate is installed in the top of blackboard eraser main part, and the inside up end of blackboard eraser main part is fixed with the second baffle to the inside of second baffle is provided with the top of small-size air exhauster, rechargeable battery installs in the inside of blackboard eraser main part, and the outside of blackboard eraser main part is provided with USB charge mouth and shift knob respectively.

Preferably, the dust suction ports are distributed on the side of the blackboard eraser main body at equal intervals, and the blackboard eraser main body is designed to be a hollow structure.

Preferably, the first baffle is in through connection with the channel, the end part of the channel is attached to the outer wall of the collecting box, and the inner diameter of the channel is larger than the diameter of the through hole.

Preferably, the outer wall of the bottom of the limiting rod and the inner wall of the limiting groove are both designed to be in a thread structure, and the bottom of the limiting rod is in threaded connection with the top of the blackboard eraser main body through the limiting groove.

Preferably, the brushes are distributed on the pull plate at equal intervals, and the distribution length of the brushes is greater than that of the filter screen.

Preferably, the second baffle is designed to be a hollow structure, and the height of the second baffle is smaller than the height of the hollow part in the blackboard eraser body.

Compared with the prior art, the beneficial effects of the utility model are that: the blackboard eraser capable of effectively preventing dust from flying can reduce the damage of chalk dust to teachers and students, can reduce the times of disassembling and cleaning dust of the filter screen, and can increase the effective area for absorbing the chalk dust;

1. the small exhaust fan can suck outside chalk dust into the blackboard eraser main body, so that the chalk dust can be prevented from scattering into a classroom, and the damage of the chalk dust to teachers and students is reduced;

2. the phenomenon that the filter screen is blocked by chalk dust due to long-time use can be avoided by vertically pulling the pull plate, so that the dust removal times of the filter screen are reduced, and the blackboard eraser is convenient to use;

3. the dust collection openings are uniformly distributed on the sides of the periphery of the blackboard eraser main body, so that the effective area of the blackboard eraser for absorbing chalk dust is increased, and the probability of scattering the chalk dust is reduced.

Drawings

FIG. 1 is a schematic view of the front view of the internal structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the external structure of the present invention;

fig. 4 is a schematic view of the top view structure of the present invention.

In the figure: 1. a blackboard eraser main body; 2. wiping the cloth strip; 3. a handle; 4. a dust suction port; 5. a first baffle plate; 6. a channel; 7. a through hole; 8. a collection box; 9. fixing the rod; 10. a limiting rod; 11. a limiting groove; 12. a drawing plate; 13. a brush; 14. a filter screen; 15. a small exhaust fan; 16. a grid plate; 17. a second baffle; 18. a rechargeable battery; 19. a USB charging port; 20. and a button is switched on and off.

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 capable of effectively preventing dust from flying comprises a blackboard eraser main body 1, a wiping cloth strip 2, a handle 3, a dust suction port 4, a first baffle 5, a channel 6, a through hole 7, a collecting box 8, a fixing rod 9, a limiting rod 10, a limiting groove 11, a pull plate 12, a brush 13, a filter screen 14, a small-sized exhaust fan 15, a grid plate 16, a second baffle 17, a rechargeable battery 18, a USB charging port 19 and a switch button 20, wherein the wiping cloth strip 2 is arranged at the bottom of the blackboard eraser main body 1, the handle 3 is fixed at the top of the blackboard eraser main body 1, the dust suction port 4 is formed in the side of the blackboard eraser main body 1, the top and the bottom of the first baffle 5 are respectively arranged on the upper end face and the lower end face inside the blackboard eraser main body 1, the side of the first baffle 5 is connected with one end of the channel 6, the other end of the channel 6 is positioned outside the through, and the other side of the collection box 8 is provided with a filter screen 14, the top of the collection box 8 penetrates through the top of the blackboard eraser main body 1 and is connected with one end of a fixed rod 9, the other end of the fixed rod 9 penetrates through a limit rod 10, the lower end of the limit rod 10 is positioned in a limit groove 11, the limit groove 11 is arranged at the top of the blackboard eraser main body 1, the lower end of a pull plate 12 penetrates through the top of the blackboard eraser main body 1, the side of the pull plate 12 is provided with a brush 13, the brush 13 is positioned at the outer side of the collection box 8, a small-sized exhaust fan 15 is arranged in the blackboard eraser main body 1, the small-sized exhaust fan 15 is positioned below a grid plate 16, the grid plate 16 is arranged at the top of the blackboard eraser main body 1, the upper end surface in the blackboard eraser main body 1 is fixed with a second baffle plate 17, the inside of the second baffle plate, and the outer side of the blackboard eraser main body 1 is respectively provided with a USB charging port 19 and a switch button 20;

the dust collection ports 4 are distributed on the side of the blackboard eraser main body 1 at equal intervals, the blackboard eraser main body 1 is designed to be a hollow structure, and the dust collection ports 4 are uniformly distributed on the periphery of the blackboard eraser main body 1, so that the area for absorbing chalk dust is increased, and the probability of scattering the chalk dust is reduced;

the first baffle 5 is communicated with the channel 6, the end part of the channel 6 is mutually attached to the outer wall of the collecting box 8, and the inner diameter of the channel 6 is larger than the diameter of the through hole 7, so that chalk dust entering the blackboard eraser main body 1 through the dust collection port 4 can enter the collecting box 8 through the channel 6 and the through hole 7, and the chalk dust can be collected by the collecting box 8;

the outer wall of the bottom of the limiting rod 10 and the inner wall of the limiting groove 11 are both designed to be in a thread structure, and the bottom of the limiting rod 10 is in threaded connection with the top of the blackboard eraser main body 1 through the limiting groove 11, so that the limiting rod 10 and the blackboard eraser main body 1 are convenient to disassemble and assemble, and the collection box 8 and the blackboard eraser main body 1 are convenient to disassemble and assemble;

the brushes 13 are distributed on the pull-out plate 12 at equal intervals, and the distribution length of the brushes 13 is greater than that of the filter screen 14, so that when the pull-out plate 12 moves up and down in the blackboard eraser main body 1, the brushes 13 on the pull-out plate 12 can brush the filter screen 14 up and down, and the brushes 13 can cover the filter screen 14, so that the filter screen 14 can be prevented from being blocked by chalk dust after long-time use;

the second baffle 17 is designed to be a hollow structure, and the height of the second baffle 17 is smaller than the hollow height of the blackboard eraser body 1, so that when the small exhaust fan 15 draws out the air in the blackboard eraser body 1, the air in the blackboard eraser body 1 can enter the second baffle 17 through the bottom of the second baffle 17.

The working principle is as follows: when the blackboard eraser capable of effectively preventing dust from flying is used, firstly, the rechargeable battery 18 in the blackboard eraser main body 1 is charged through the USB charging port 19, after charging is finished, the small-sized exhaust fan 15 is started through the switch button 20, then the small-sized exhaust fan 15 pumps air in the blackboard eraser main body 1 to the outside through the grid plate 16, so that a negative pressure interval is formed in the blackboard eraser main body 1, when a teacher uses the blackboard eraser main body 1 to wipe a blackboard, external chalk dust enters the collecting box 8 through the dust suction port 4, the channel 6 and the through hole 7 to be collected, the filter screen 14 filters the chalk dust, the chalk dust is retained in the collecting box 8, the air is discharged to the outside through the small-sized exhaust fan 15, the harm to the bodies of the teacher and students caused by the chalk dust scattered to the outside of the blackboard eraser main body 1 is reduced, and when the filter screen 14 is blocked by the chalk dust, pulling pull board 12 from top to bottom this moment, pull board 12 this moment drives brush 13 and cleans filter screen 14 to avoided filter screen 14 to be because of the phenomenon of long-time use by chalk dust jam, when collecting box 8 need carry out the deashing, corotation gag lever post 10 this moment, because gag lever post 10 and spacing groove 11 are threaded connection, consequently gag lever post 10 and spacing groove 11 separation, can pull out collecting box 8 from the inside of blackboard eraser main part 1 through dead lever 9 this moment, then with the chalk dust from through-hole 7 department pour out can.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a blackboard eraser that can effectively prevent dust and fly upward, includes blackboard eraser main part (1), first baffle (5), pull board (12), small-size air exhauster (15), rechargeable battery (18), USB charge mouthful (19) and shift knob (20), its characterized in that: the blackboard eraser is characterized in that a wiping cloth strip (2) is arranged at the bottom of the blackboard eraser main body (1), a handle (3) is fixed at the top of the blackboard eraser main body (1), a dust suction port (4) is formed in the side of the blackboard eraser main body (1), the top and the bottom of a first baffle (5) are respectively arranged on the upper end surface and the lower end surface in the blackboard eraser main body (1), the side of the first baffle (5) is connected with one end of a channel (6), the other end of the channel (6) is positioned on the outer side of a through hole (7), the through hole (7) is reserved on one side of a collecting box (8), a filter screen (14) is arranged on the other side of the collecting box (8), the top of the collecting box (8) penetrates through the top of the blackboard eraser main body (1) and is connected with one end of a fixing rod (9), a limiting rod (10) penetrates through the other end of the fixing rod (9), and the lower, the limiting groove (11) is arranged at the top of the blackboard eraser main body (1), the lower end of the pull-out plate (12) penetrates through the top of the blackboard eraser main body (1), the side of the pull-out plate (12) is provided with a brush (13), the brush (13) is positioned at the outer side of the collecting box (8), the small exhaust fan (15) is arranged in the blackboard eraser main body (1), and the small exhaust fan (15) is positioned below the grid plate (16), the grid plate (16) is arranged at the top of the blackboard eraser main body (1), and a second baffle (17) is fixed on the upper end surface in the blackboard eraser main body (1), and the second baffle (17) is internally provided with the top of a small-sized exhaust fan (15), the rechargeable battery (18) is arranged inside the blackboard eraser main body (1), and the outer side of the blackboard eraser main body (1) is respectively provided with a USB charging port (19) and a switch button (20).

2. The blackboard eraser capable of effectively preventing dust from flying according to claim 1, wherein: the dust collection ports (4) are distributed on the side of the blackboard eraser main body (1) at equal intervals, and the blackboard eraser main body (1) is designed to be a hollow structure.

3. The blackboard eraser capable of effectively preventing dust from flying according to claim 1, wherein: the first baffle (5) is in through connection with the channel (6), the end part of the channel (6) is attached to the outer wall of the collecting box (8), and the inner diameter of the channel (6) is larger than the diameter of the through hole (7).

4. The blackboard eraser capable of effectively preventing dust from flying according to claim 1, wherein: the outer wall of the bottom of the limiting rod (10) and the inner wall of the limiting groove (11) are both designed to be of a thread structure, and the bottom of the limiting rod (10) is in threaded connection with the top of the blackboard eraser body (1) through the limiting groove (11).

5. The blackboard eraser capable of effectively preventing dust from flying according to claim 1, wherein: the hairbrushes (13) are distributed on the drawing plate (12) at equal intervals, and the distribution length of the hairbrushes (13) is greater than that of the filter screen (14).

6. The blackboard eraser capable of effectively preventing dust from flying according to claim 1, wherein: the second baffle (17) is designed to be a hollow structure, and the height of the second baffle (17) is smaller than the height of the hollow part in the blackboard eraser main body (1).