CN108859511A - A kind of turnover type dust-separation blackboard - Google Patents

Abstract

The invention discloses a foldable dust-proof blackboard. One side of the frame is provided with a first writing board surface, one side of the frame is provided with a first folded plate, the first folded plate is hinged to one side of the frame, and the first folded plate A second writing board surface is formed on the inner side, and a first erasing space is formed between the second writing board surface and the first writing board surface; a third writing board surface is provided on the other side of the frame, and the first folding board is opposite The other side of the frame is provided with a second folded board, the second folded board is hinged to the other side of the frame, and the inside of the second folded board is formed with a fourth writing board surface, between the fourth writing board surface and the third writing board surface A second erasing space is formed between them. The invention can not only realize the folding of the blackboard, but also form a closed erasing space on the writing surface of the blackboard. During the erasing process, dust can be prevented from directly entering the atmosphere, which is beneficial to the health of students and teachers, and can also remove two dusts at a time. A writing board surface improves blackboard erasing efficiency.

Description

A foldable dustproof blackboard

technical field

The invention relates to a blackboard, in particular to a folding dust-proof blackboard.

Background technique

The blackboard is an essential teaching tool in schools for teachers to write on the blackboard. Existing blackboards are usually a single fixed board or a sliding board. When the blackboard is full, erase it with an eraser. During the erasing process of the current blackboard, the erased board surface must be exposed to the external environment, and the dust generated after erasing will directly enter the environment, affecting teachers and students. of good health. And one erasing action can only clean up one blackboard board surface, and erasing efficiency is low.

The Chinese patent with the publication number CN202573486U discloses a multi-layer folding blackboard, including two parts: a fixed blackboard and a folding blackboard. The fixed blackboard is provided with murals; The folding blackboard is respectively provided with magnetic attraction or adhesion device, and the area and function of the blackboard are greatly improved. Although this technical solution realizes the folding of the board surface, during the erasing process, the board surface must be exposed to the external environment, and the dust directly enters the atmospheric environment, and only one board surface can be erased at a time, so the efficiency is low.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a folding dust-proof blackboard, which not only can realize the folding of the blackboard, but also can form a closed erasing space on the writing surface of the blackboard, and prevent dust from entering directly during the erasing process Atmospheric environment, at the same time, it can clear two writing board surfaces at one time, with high efficiency.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a foldable dust-proof blackboard, the blackboard includes a frame, a first writing board surface is provided on one side of the frame, a first folding board is provided on one side of the frame, The first folding board is hinged to one side of the frame, a second writing board surface is formed inside the first folding board, and a first erasing space is formed between the second writing board surface and the first writing board surface; The other side of the frame is provided with a third writing board surface, and the other side of the frame opposite to the first folding board is provided with a second folding board, the second folding board is hinged to the other side of the frame, and the second folding board is hinged to the other side of the frame. A fourth writing board surface is formed inside the board, and a second erasing space is formed between the fourth writing board surface and the third writing board surface.

As described above, a foldable dust-proof blackboard, first slideways are provided on both sides of the first erasing space, first brush wheels are arranged inside the first erasing space, and the two sides of the first brush wheel Extending into the inside of the first slideway, the first brush wheel moves up and down along the first slideway to erase the first writing board surface and the second writing board surface. When it needs to be erased, close the first folding plate, so that the first erasing space is formed between the second writing board surface and the first writing board surface, and the first brush wheel moves up and down through the first slideway. The first brush wheel is in contact with the first writing board surface and the second writing board surface at the same time, thereby realizing the simultaneous erasure of the first writing board surface and the second writing board surface, and the dust generated during the erasing process cannot directly enter the atmosphere surroundings.

As described above, a foldable dust-proof blackboard, second slideways are provided on both sides of the second erasing space, and second brush wheels are arranged inside the second erasing space, and the two sides of the second brush wheel Extending into the second slideway, the second brush wheel moves up and down along the second slideway to erase the third writing board surface and the fourth writing board surface. When erasing is required, close the second folding plate, thereby forming a second erasing space between the third writing board surface and the fourth writing board surface, and the second brush wheel moves up and down through the second slideway. The second brush wheel is in contact with the third writing board surface and the fourth writing board surface at the same time, thereby realizing the simultaneous erasure of the third writing board surface and the fourth writing board surface, and the dust generated during the erasing process cannot directly enter the atmosphere surroundings.

According to the above-mentioned foldable dust-proof blackboard, the shaft of the brush wheel protrudes from the outside of the frame, and the drive part is connected to the outside of the shaft of the brush wheel. The driving part can adopt manual and electric modes, and the manual mode can use a push-pull rod or rope to realize the sliding of the brush wheel, and the electric mode can use a motor, a gear or a belt to drive the brush wheel to roll.

As described above, a foldable dust-proof blackboard, the bottom of the first erasing space is provided with a first row of ash openings, the first row of ash openings are recessed downwards, and the bottom of the first row of ash openings is distributed with first ash guides. hole. The dust in the first erasing space falls into the first row of ash openings under the action of gravity, and because the first row of ash openings are sunken downwards to facilitate dust accumulation, the gathered dust enters the first ash guide hole.

In the above-mentioned foldable dust-proof blackboard, the first ash row is connected to the first ash tank on the lower side of the frame through the first ash guide hole, and the lower part of the first ash tank is contracted. The dust discharged from the first ash guide hole is collected in the first ash tank, which is designed to be detachable for easy dust cleaning.

As mentioned above, a foldable dust-proof blackboard, the bottom of the second erasing space is provided with a second ash outlet, the second ash outlet is recessed downward, and the bottom of the second ash outlet is distributed with a second ash guide hole. The dust in the second erasing space falls into the second row of ash openings under the action of gravity, and because the second row of ash openings are sunken downwards to facilitate dust accumulation, the gathered dust enters the second ash guide hole.

In the above-mentioned foldable dust-proof blackboard, the second ash discharge port is connected to the second pen ash tank on the lower side of the frame through the second ash guide hole, and the lower part of the second pen ash tank is contracted. The dust discharged from the second ash guide hole is collected in the second ash tank, which is designed to be detachable for easy dust cleaning.

According to the above-mentioned foldable dust-proof blackboard, a projection surface is provided between the first erasing space and the second erasing space. The projection surface can be used for projection of multimedia projectors in classrooms, so that while realizing multimedia teaching, blackboard writing can also be performed.

The beneficial effect of the present invention is that: one side of the frame is provided with a first writing board surface, one side of the frame is provided with a first folded plate, the first folded plate is hinged to one side of the frame, and the inner side of the first folded plate is formed with a second On the writing board surface, a first erasing space is formed between the second writing board surface and the first writing board surface; the third writing board surface is provided on the other side of the frame, and the other side of the frame opposite to the first folding board is provided There is a second folding board, the second folding board is hinged to the other side of the frame, a fourth writing board surface is formed inside the second folding board, and a second writing board surface is formed between the fourth writing board surface and the third writing board surface. Erase space. The invention can not only realize the folding of the blackboard, but also form a closed erasing space on the writing surface of the blackboard. During the erasing process, dust can be prevented from directly entering the atmosphere, which is beneficial to the health of students and teachers, and can also remove two dusts at a time. A writing board surface improves blackboard erasing efficiency.

Description of drawings

Fig. 1 is the structure schematic diagram of folding type dustproof blackboard in the embodiment;

Fig. 2 is the structure schematic diagram of the folding type dustproof blackboard after removing a folding board in the embodiment;

Fig. 3 is a schematic diagram of a cross-section of the foldable dust-proof blackboard along the center line of the erasing space in the embodiment;

Fig. 4 is a partially enlarged schematic diagram of the folding dust-proof blackboard in the embodiment.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a folding dust-proof blackboard, the blackboard includes a frame 1, a first writing board surface 2 is provided on one side of the frame 1, and a first writing board surface 2 is provided on one side of the frame 1. A first folding board 3 is provided, and the first folding board 3 is hinged to one side of the frame 1, and a second writing board surface 4 is formed inside the first folding board 3, and the second writing board surface 4 is connected with the first writing board surface. A first erasing space 5 is formed between the board surfaces 2; a third writing board surface 6 is provided on the other side of the frame 1, and a second folding board is provided on the other side of the frame 1 opposite to the first folding board 3 plate 7, the second folded plate 7 is hinged to the other side of the frame 1, and a fourth writing board surface 8 is formed inside the second folding board 7, and between the fourth writing board surface 8 and the third writing board surface 6 A second erasing space 9 is formed.

In an embodiment of the foldable dust-proof blackboard, first slides 10 are provided on both sides of the first erasing space 5, and first brush wheels 11 are arranged inside the first erasing space 5, and the first brush Both sides of the wheel 11 extend into the inside of the first slideway 10 , and the first brush wheel 11 moves up and down along the first slideway 10 to erase the first writing board surface 2 and the second writing board surface 4 . When erasing is required, close the first folding plate 3, so that the first erasing space 5 is formed between the second writing board surface 4 and the first writing board surface 2, and the first brush wheel 11 passes through the first slideway 10 Moving up and down, the first brush wheel 11 is in contact with the first writing board surface 2 and the second writing board surface 4 at the same time during the movement, thereby realizing the simultaneous erasure of the first writing board surface 2 and the second writing board surface 4, Dust generated during wiping cannot enter the atmosphere directly.

In an embodiment of the foldable dust-proof blackboard, second slides 12 are provided on both sides of the second erasing space 9, and second brush wheels 13 are arranged inside the second erasing space 9, and the second brush Both sides of the wheel 13 extend into the second slideway 12 , and the second brush wheel 13 moves up and down along the second slideway 12 to erase the third writing board surface 6 and the fourth writing board surface 8 . When erasing is required, close the second folding plate 7, thereby forming a second erasing space 9 between the third writing board surface 6 and the fourth writing board surface 8, and the second brush wheel 13 passes through the second slideway 12 Moving up and down, the second brush wheel 13 is in contact with the third writing board surface 6 and the fourth writing board surface 8 at the same time during the movement, thereby realizing the simultaneous erasure of the third writing board surface 6 and the fourth writing board surface 8, Dust generated during wiping cannot enter the atmosphere directly.

In an embodiment of the foldable dust-proof blackboard, the shaft of the brush wheel protrudes from the outside of the frame 1 , and a drive member 14 is connected to the outside of the shaft of the brush wheel. Driver 14 can adopt manual and electric mode, adopts manual mode and can use push-pull bar or rope to realize the sliding of hair brush wheel, and electric mode can adopt the mode of motor, gear or belt to drive hair brush wheel to roll.

In an embodiment of the foldable dust-proof blackboard, the bottom of the first erasing space 5 is provided with a first ash discharge port 15, the first ash discharge port 15 is recessed downward, and the bottom of the first ash discharge port 15 is distributed with a second One ash guide hole 16. The dust in the first erasing space 5 falls into the first row of ash openings 15 under the action of gravity. Since the first row of ash openings 15 are sunken downwards to facilitate dust accumulation, the collected dust enters the first ash guide holes 16 . The first ash discharge port 15 is connected to the first ash tank 17 on the lower side of the frame 1 through the first ash guide hole 16, and the lower part of the first ash tank 17 is contracted. The dust discharged from the first ash guide hole 16 is collected in the first brush ash tank 17, and the first brush ash tank 17 is designed to be detachable for easy cleaning of dust.

In an embodiment of the foldable dust-proof blackboard, the second erasing space 9 is provided with a second ash discharge port 18 at the bottom, the second ash discharge port 18 is recessed downward, and the bottom of the second ash discharge port 18 is distributed with the second ash discharge port 18. Two ash guide holes 19. The dust in the second erasing space 9 falls into the second ash discharge opening 18 under the action of gravity, and because the second ash discharge opening 18 is sunken downwards to facilitate dust accumulation, the collected dust enters the second ash guide hole 19 . The second ash discharge port 18 is connected to the second ash tank 20 on the lower side of the frame 1 through the second ash guide hole 19, and the lower part of the second ash tank 20 is contracted. The dust discharged from the second ash guide hole 19 is collected in the second ash tank 20, and the second ash tank 20 is designed to be detachable for easy cleaning of dust.

In an embodiment of the folding dustproof blackboard, a projection surface 21 is provided between the first erasing space 5 and the second erasing space 9 . The projection surface 21 can be used for projection by a multimedia projector in a classroom, so as to realize multimedia teaching and at the same time, blackboard writing can also be performed.

When the present invention needs to be erased, the first turning board 3 is closed, so that the first erasing space 5 is formed between the second writing board surface 4 and the first writing board surface 2, and the first brush wheel 11 passes through the first sliding The track 10 moves up and down. During the movement, the first brush wheel 11 is in contact with the first writing board surface 2 and the second writing board surface 4 at the same time, thereby realizing the simultaneous wiping of the first writing board surface 2 and the second writing board surface 4. Except; close the second folding plate 7, thereby forming the second erasing space 9 between the third writing board surface 6 and the fourth writing board surface 8, the second brush wheel 13 moves up and down through the second slideway 12, and moves During the process, the second brush wheel 13 is in contact with the third writing board surface 6 and the fourth writing board surface 8 at the same time, thereby realizing the simultaneous erasure of the third writing board surface 6 and the fourth writing board surface 8. Dust produced cannot enter the atmosphere directly. The dust in the first erasing space 5 falls into the first row of ash openings 15 under the action of gravity, because the first row of ash openings 15 are sunken downwards to facilitate dust accumulation, and the gathered dust enters the first ash guide hole 16, from which The dust discharged from the second ash guide hole 19 is collected in the second ash tank 20, and the second ash tank 20 is designed to be detachable for easy cleaning of dust. Similarly, the dust in the second erasing space 9 falls into the second ash discharge port 18 under the action of gravity, and because the second ash discharge port 18 is sunken downwards to facilitate dust accumulation, the gathered dust enters the second ash guide hole 19 , The dust discharged from the second ash guide hole 19 is collected in the second ash tank 20, and the second ash tank 20 is designed to be detachable, which is convenient for dust cleaning. The invention can not only realize the folding of the blackboard, but also form a closed erasing space on the writing surface of the blackboard. During the erasing process, dust can be prevented from directly entering the atmosphere, which is beneficial to the health of students and teachers. A writing board surface improves blackboard erasing efficiency.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (9)

1. A foldable dustproof blackboard, the blackboard comprises a frame (1), characterized in that: one side of the frame (1) is provided with a first writing board surface (2), and one side of the frame (1) is provided with There is a first folded board (3), the first folded board (3) is hinged to one side of the frame (1), and a second writing board surface (4) is formed inside the first folded board (3). A first erasing space (5) is formed between the second writing board (4) and the first writing board (2); the other side of the frame (1) is provided with a third writing board (6), and The other side of the frame (1) relative to the first folded plate (3) is provided with a second folded plate (7), and the second folded plate (7) is hinged with the other side of the frame (1). A fourth writing board surface (8) is formed inside the folding board (7), and a second erasing space (9) is formed between the fourth writing board surface (8) and the third writing board surface (6). 2. A folding dust-proof blackboard according to claim 1, characterized in that: first slideways (10) are provided on both sides of the first erasing space (5), and the first erasing space ( 5) The first brush wheel (11) is provided inside, and both sides of the first brush wheel (11) extend into the inside of the first slideway (10), and the first brush wheel (11) extends along the first slideway ( 10) Erase the first writing board surface (2) and the second writing board surface (4) by moving up and down. 3. A foldable dust-proof blackboard according to claim 1, characterized in that: the two sides of the second erasing space (9) are provided with second slideways (12), and the second erasing space ( 9) The second brush wheel (13) is provided inside, and both sides of the second brush wheel (13) extend into the inside of the second slideway (12), and the second brush wheel (13) extends along the second slideway ( 12) Erase the third writing board surface (6) and the fourth writing board surface (8) by moving up and down. 4. A folding dust-proof blackboard according to claim 2 or 3, characterized in that: the shaft of the brush wheel protrudes from the outside of the frame (1), and the outside of the shaft of the brush wheel is connected with Drive (14). 5. A foldable dust-proof blackboard according to claim 1, characterized in that: the bottom of the first erasing space (5) is provided with a first ash discharge port (15), the first ash discharge port ( 15) It is sunken downwards, and the bottom of the first row of ash openings (15) is distributed with first ash guide holes (16). 6. A foldable dust-proof blackboard according to claim 5, characterized in that: the first ash discharge port (15) is connected to the lower side of the frame (1) through the first ash guide hole (16) The first ash trough (17) of the first stroke, the bottom of the first ash trough (17) is contracted. 7. A folding dust-proof blackboard according to claim 1, characterized in that: the bottom of the second erasing space (9) is provided with a second ash discharge port (18), the second ash discharge port ( 18) It is sunken downwards, and second ash guide holes (19) are distributed on the bottom of the second ash discharge port (18). 8. A foldable dust-proof blackboard according to claim 7, characterized in that: the second ash outlet (18) is connected to the lower side of the frame (1) through the second ash guide hole (19) The second pen ash tank (20), the second pen ash tank (20) bottom is contracted. 9. A folding dust-proof blackboard according to claim 1, characterized in that: a projection surface (21) is provided between the first erasing space (5) and the second erasing space (9) .