CN212708686U

CN212708686U - Dustproof blackboard eraser

Info

Publication number: CN212708686U
Application number: CN202021019687.0U
Authority: CN
Inventors: 肖美华; 何祚信; 何婕; 周娜; 黄�俊
Original assignee: Yunxushan Joint School Of Shigu District
Current assignee: Yunxushan Joint School Of Shigu District
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-03-16
Anticipated expiration: 2030-06-05

Abstract

The utility model provides a prevent grey blackboard brush, includes hollow box, the bottom of box is equipped with the brush board, the brush board rotates with the box to be connected, install the pile brush on the brush board, be equipped with rotary mechanism on the box, rotary mechanism is connected with the brush board, the upper end of box still is equipped with the cylinder, the cylinder slides along the cross section of box, be equipped with the brush on the cylinder, the one end of box is equipped with the ash collecting groove, it has the ash discharge mouth to open on the ash collecting groove. Compared with the prior art, the utility model discloses in will rotate and press then rotate to the box is interior, will brush the board and have the one side upset outside of pile brush, rotate the outside and reset fixedly and brush the board, accomplish the preparation work before wiping the blackboard. After the blackboard is cleaned, the rotating piece is pressed into the box and then rotates reversely, the side, with the plush brushes, of the blackboard is turned into the box, and the blackboard eraser is placed on the platform, so that chalk dust cannot fall off. By moving the brush, the chalk dust brushed by the plush can be quickly cleaned.

Description

Dustproof blackboard eraser

Technical Field

The utility model belongs to the technical field of teaching equipment manufacture technique and specifically relates to a prevent grey blackboard brush is related to.

Background

The traditional blackboard brush used in the current classroom mainly comprises a brush and a panel, and the blackboard brush is simple to use as long as the panel is held to enable the brush to be in close contact with a blackboard, and then the blackboard brush is repeatedly moved to enable chalk dust on the blackboard to be removed. When the blackboard eraser is placed on the platform after being brushed, chalk dust on the blackboard eraser falls on the platform to cause pollution to the platform, and clothes and hands of teachers are easily polluted in the teaching process; secondly, teachers often stack books on the platform, and the books are easy to pollute and are not sanitary.

Therefore, there is a need to provide a new anti-dust blackboard eraser to solve the above technical problems.

Disclosure of Invention

The utility model aims to solve the technical problem that a dustproof blackboard eraser capable of timely cleaning chalk dust of the blackboard eraser and preventing hands from being easily stained with the chalk dust and polluting a platform is provided.

The utility model provides a technical scheme that its technical problem adopted, a prevent grey blackboard brush, including hollow box, the bottom of box is equipped with the brush board, the brush board rotates with the box to be connected, install the pile brush on the brush board, be equipped with rotary mechanism on the box, rotary mechanism is connected with the brush board, the upper end of box still is equipped with the cylinder, the cylinder slides along the cross section of box, be equipped with the brush on the cylinder, the one end of box is equipped with the ash collecting groove, it has the ash discharge mouth to open on the ash collecting groove.

Preferably, the rotating mechanism includes: the long shaft is fixedly connected with the brush plate, the long shaft is rotatably connected with the box, the spring is arranged between the long shaft and the rotating part, the long shaft is slidably connected with the rotating part, and the rotating part extends out of the box and is rotatably connected with the box; the brush is characterized in that one end, far away from the long shaft, of the rotating part is sequentially provided with a first lug and a second lug, the limiting block is arranged on one side, far away from the second lug, of the first lug, the limiting block is matched with the first lug so as to limit the rotation angle of the brush plate, the second lug is inserted into the limiting groove, and the limiting groove is arranged on the box.

Preferably, the area of one end of the second bump close to the long shaft is larger than that of the other end.

Preferably, the rotating mechanism further comprises a limit ring, and the limit ring is arranged on the outer side of the box.

Preferably, a moving rod is inserted into the roller, one end of the moving rod extends out of the box, a roller is arranged on the moving rod, and a guide groove matched with the roller is formed in the box.

Preferably, the rollers slide along the length of the cassette.

Preferably, the top end of the box is further provided with a handle, and the outer side of the handle is further provided with a dust cover.

Preferably, the handle is in threaded connection with the box, and the dust cover is connected with the box through a magic tape.

Compared with the prior art, the utility model discloses in, when needing to clean the blackboard, will rotate and press then rotate to the box in, will brush the board and have the one side upset outside of pile brush, rotate the outside and reset and fix the board brush, accomplish the preparation work before cleaning the blackboard. After the blackboard is cleaned, the rotating piece is pressed into the box and then rotates reversely, the side, with the plush brushes, of the brushing board is turned into the box, the rotating piece is reset outwards to fix the brushing board, and at the moment, the blackboard eraser is placed on the platform, so that chalk dust cannot fall off. When too much chalk dust is adhered to the plush brush, one end of the box, which is provided with the dust collecting groove, faces downwards, the hairbrush is moved up and down, the chalk dust on the plush brush is cleaned, and the cleaned chalk dust falls into the dust collecting groove and is discharged through the dust discharging opening. The chalk dust is not easy to scatter in the air and stick on hands when the chalk is used subsequently. Meanwhile, the blackboard eraser is high in height, so that chalk dust is not easily stained by hands when the blackboard is erased.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a rear view of FIG. 1;

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

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;

fig. 5 is a schematic structural view of the rotating mechanism of the present invention;

fig. 6 is a schematic structural view of the drum of the present invention.

In the figure:

1. the dust collector comprises a box, 2 parts of a brush board, 21 parts of a plush brush, 3 parts of a rotating mechanism, 4 parts of a roller, 41 parts of a hairbrush, 11 parts of a dust collecting groove, 12 parts of a dust discharging opening, 31 parts of a long shaft, 32 parts of a spring, 33 parts of a rotating part, 34 parts of a limiting block, 35 parts of a first lug, 36 parts of a second lug, 37 parts of a limiting ring, 5 parts of a moving rod, 6 parts of a roller, 13 parts of a guide groove, 7 parts of a handle and 8 parts of a dust cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to the attached drawings 1-6, the present embodiment includes a hollow box 1, a brush board 2 is arranged at the bottom of the box 1, the brush board 2 is rotatably connected with the box 1, a plush brush 21 is mounted on the brush board 2, a rotating mechanism 3 is arranged on the box 1, the rotating mechanism 3 is connected with the brush board 2, a roller 4 is further arranged at the upper end of the box 1, the roller 4 slides along the cross section of the box 1, a brush 41 is arranged on the roller 4, an ash collecting groove 11 is arranged at one end of the box 1, and an ash discharge opening 12 is formed in the ash collecting groove 11. When the blackboard needs to be erased, the brush board 2 is turned over, and the side with the plush brush 21 faces outwards; when the blackboard is not needed to be erased, the brush board 2 is turned, the surface with the plush brush 21 faces the inside, and chalk dust cannot fall on the platform when the blackboard is placed on the platform. When more chalk dust is put on the plush brush 21, the roller 4 slides along the surface of the plush brush 21, meanwhile, the brush 41 on the roller 4 cleans the chalk dust of the plush brush 21, the cleaned chalk dust falls into the dust collecting groove 11 and then is discharged out of the box 1 through the dust discharge port 12, the arrangement ensures that the plush brush 21 keeps a good state, and when the blackboard is brushed, the plush brush 21 can be stained with more chalk dust, thereby reducing the scattering of the chalk dust in the air and reducing the chance of staining hands with the chalk dust. The blackboard eraser has a high height because the eraser plate 2 can be turned over, and the chalk dust is not easily stained by hands when the blackboard is erased.

The rotation mechanism 3 includes: the long shaft 31 is fixedly connected with the brush plate 2 and is superposed with the symmetry line of the brush plate 2, and the height of the box 1 can be effectively reduced by the arrangement; the long shaft 31 is rotatably connected with the box 1, a spring 32 is arranged between the long shaft 31 and the rotating part 33, the long shaft 31 is slidably connected with the rotating part 33, and the rotating part 33 extends out of the box 1 and is rotatably connected with the box 1. The end of the rotating member 33 away from the long shaft 31 is sequentially provided with a first protrusion 35 and a second protrusion 36, the limiting block 34 is arranged on one side of the first protrusion 35 away from the second protrusion 36, the limiting block 34 is matched with the first protrusion 35 so as to limit the rotation angle of the brush plate 2, the second protrusion 36 is inserted into a limiting groove, and the limiting groove is arranged on the box 1. The one end that rotates piece 33 and stretches out box 1 is the flat structure, and the user holds between the fingers and rotates piece 33 and to the internal pressure of box 1, and second lug 36 roll-off spacing groove, and at this moment, first lug 35 and a stopper 34 butt will rotate the piece 33 and rotate the half a circle, and brush board 2 upset, and at this moment, first lug 35 and another stopper 34 butt. The rotating member 33 is loosened or pulled outward, and the second projection 36 is inserted into the retaining groove by the spring 32, and the brush plate 2 is fixed.

The area of the second bump 36 near one end of the long shaft 31 is larger than that of the other end. When the rotating member 33 is released, the restoring force of the spring 32 sends the second projection 36 into the retaining groove, but at the same time the brush plate 2 may also rotate, thereby interfering with the insertion of the second projection 36. Through this setting, can effectively guarantee that second lug 36 inserts in the spacing groove smoothly, avoid receiving the rotatory influence of brush board 2.

The rotation mechanism 3 further comprises a stop collar 37, the stop collar 37 being arranged outside the cassette 1. The user can conveniently hold the rotating part 33 to press the box 1, and the condition of inaccurate force application is avoided.

A moving rod 5 is inserted on the roller 4, one end of the moving rod 5 extends out of the box 1, a roller 6 is arranged on the moving rod 5, and a guide groove 13 matched with the roller 6 is formed in the box 1. The roller 6 rolls in the guide groove 13, and the roller 4 is driven to slide along the surface of the pile brush 21. When the effect of cleaning dust is not good, the moving rod 5 is rotated to rotate the drum 4, and the brush 41 on the other side of the drum 4 is replaced to clean the chalk dust on the lint brush 21, thereby maintaining the cleaning effect.

The rollers 4 slide along the length of the cassette 1. This arrangement reduces the resistance to the brush 41 and facilitates the movement of the drum 4.

The top end of the box 1 is also provided with a handle 7, and the outer side of the handle 7 is also provided with a dust cover 8. The blackboard is erased by holding the handle 7 with the hand inserted into the preventing cover, so that the chalk dust on the hand can be further reduced.

Handle 7 and 1 threaded connection of box, dust cover 8 passes through the magic with box 1 and pastes and be connected, should set up the convenience and dismantle handle 7 and dust cover 8 get off, directly take 1 blackboard of wiping of box, simultaneously, the user also can be conveniently changed the dust cover 8 that oneself liked.

The utility model discloses in, when needing to clean the blackboard, will rotate piece 33 and press then rotate to box 1 is inside, will brush board 2 has the one side upset of pile brush 21 to the outside, rotates piece 33 and outwards resets and fix brush board 2, accomplishes the preparation work before cleaning the blackboard. After the blackboard erasing work is finished, the rotating piece 33 is pressed into the box 1 and then rotates reversely, the side, with the plush brush 21, of the brush board 2 is turned into the box 1, the rotating piece 33 is reset outwards to fix the brush board 2, and at the moment, the blackboard eraser is placed on a platform and chalk dust cannot fall off. When too much chalk dust is adhered to the lint brush 21, the end of the case 1, which is provided with the dust collecting groove 11, is directed downward, the brush 41 is moved up and down to clean the chalk dust on the lint brush 21, and the cleaned chalk dust falls into the dust collecting groove 11 and is discharged through the dust discharge port 12. The chalk dust is not easy to scatter in the air and stick on hands when the chalk is used subsequently. Meanwhile, the blackboard eraser is high in height, so that chalk dust is not easily stained by hands when the blackboard is erased.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a prevent grey blackboard brush, its characterized in that, includes hollow box, the bottom of box is equipped with the brush board, the brush board rotates with the box to be connected, install the pile brush on the brush board, be equipped with rotary mechanism on the box, rotary mechanism is connected with the brush board, the upper end of box still is equipped with the cylinder, the cylinder slides along the cross section of box, be equipped with the brush on the cylinder, the one end of box is equipped with the ash collecting groove, it has the ash discharge mouth to open on the ash collecting groove.

2. The soot-resistant scrubber as recited in claim 1, wherein the rotation mechanism comprises: the long shaft is fixedly connected with the brush plate, the long shaft is rotatably connected with the box, the spring is arranged between the long shaft and the rotating part, the long shaft is slidably connected with the rotating part, and the rotating part extends out of the box and is rotatably connected with the box; the brush is characterized in that one end, far away from the long shaft, of the rotating part is sequentially provided with a first lug and a second lug, the limiting block is arranged on one side, far away from the second lug, of the first lug, the limiting block is matched with the first lug so as to limit the rotation angle of the brush plate, the second lug is inserted into the limiting groove, and the limiting groove is arranged on the box.

3. The soot-resistant eraser of claim 2, wherein an area of one end of said second protrusion near said long axis is larger than an area of the other end.

4. The soot-resistant blackboard brush of claim 3, wherein the rotating mechanism further comprises a limit ring, and the limit ring is disposed outside the box.

5. The blackboard eraser of claim 4, wherein a moving rod is inserted into the roller, one end of the moving rod extends out of the box, the moving rod is provided with a roller, and the box is provided with a guide groove matched with the roller.

6. The soot-resistant blackboard brush of claim 5, wherein the roller slides along the length direction of the box.

7. The soot-resistant blackboard brush according to claim 6, wherein the top end of the box is further provided with a handle, and the outer side of the handle is further provided with a dust-proof cover.

8. The soot-preventing blackboard brush according to claim 7, wherein the handle is screwed with the box, and the dust-proof cover is connected with the box by a magic tape.