CN204659284U - A kind of electric erasing type blackboard - Google Patents

Abstract

An electric erasing type blackboard includes a tail roller, a writing board, an aluminum alloy plate, an electric roller and a frame. The aluminum alloy plate is a rectangular plate. The upper and lower ends of the aluminum alloy plate are connected to the frame. There is a distance between the left and right ends of the aluminum alloy plate and the frame. The tail roller and electric roller are respectively located on both sides of the aluminum alloy plate. The upper and lower ends of the tail roller and the electric roller are respectively connected with the frame. The two ends of the tail roller are respectively equipped with a gear, and these two gears rotate with the rotation of the tail roller. The two ends of the electric roller are respectively equipped with a gear, and these two gears rotate with the rotation of the tail roller. The writing board is a conveyor belt wrapped with tail rollers, electric rollers and aluminum alloy plates. The upper and lower ends of the inner surface of the conveyor belt respectively have a rack that goes around the conveyor belt. The gear installed on the upper end of the tail roller and the electric roller meshes with the rack on the upper end of the conveyor belt. The gear installed on the lower end of the tail roller and the electric roller meshes with the rack at the lower end of the conveyor belt.

Description

An electric erasing type blackboard

technical field

The utility model relates to a teaching tool.

Background technique

At present, most of the commonly used blackboards are plate-shaped and manually erased, which brings many disadvantages to teachers' teaching, and also has the problem of dust pollution. If used for a long time, teachers and students will inhale a large amount of dust, which will have a certain impact on their health, and even suffer from respiratory diseases. Although the teaching of multimedia and projectors has appeared along with the development of science, the majority of teachers and students feel that the use effect is not good, and the purpose of teacher teaching cannot be reached. Therefore, it is particularly important to design a brand-new electric erasing type blackboard.

Based on the existing problems of the existing blackboards, many motorized or dust-free blackboards have been developed. But most of these technologies are blackboards designed to be rotated to achieve the effect of cleaning and dust removal. But there are still many problems, for example, because the teacher writes on the blackboard, the layout is limited, so the design of the blackboard is not reasonable enough; the brush is not clean when wiping the blackboard; the transmission mechanism is huge, which increases the volume of the whole mechanism, and it is not beautiful enough; The blackboard surface may slip during transmission.

Contents of the invention

The purpose of the utility model is to solve the problem of blackboard automatic erasing.

The technical solution adopted for realizing the purpose of the utility model is such that an electric erasing blackboard comprises a tail roller, a writing board, an aluminum alloy plate, an electric roller and a frame.

The frame is a rectangular frame. The aluminum alloy plate is a rectangular plate. The upper and lower ends of the aluminum alloy plate are connected to the frame. There is a distance between the left and right ends of the aluminum alloy plate and the frame.

The tail roller and the electric roller are respectively located on both sides of the aluminum alloy plate. The upper and lower ends of the tail roller and the electric roller are respectively connected to the frame. Two ends of the tail roller are respectively equipped with a gear, and these two gears rotate with the rotation of the tail roller. The two ends of the electric roller are respectively equipped with a gear, and these two gears rotate with the rotation of the tail roller.

A strip block I is installed on the side of the tail roller facing away from the aluminum alloy plate. A strip block II is installed on the side of the electric roller facing away from the aluminum alloy plate.

The writing board is a conveyor belt wrapped with tail rollers, electric rollers and aluminum alloy plates. The upper and lower ends of the inner surface of the conveyor belt respectively have a rack that goes around the conveyor belt. The gear installed on the upper end of the tail roller and the electric roller is engaged with the rack on the upper end of the conveyor belt. The gear installed on the lower end of the tail roller and the electric roller is engaged with the rack at the lower end of the conveyor belt.

The outer surface of this conveyor belt is the writing surface.

Both the strip block I and the strip block II are equipped with a blackboard eraser on the side facing the conveyor belt. The two ends of the conveyor belt are in contact with the two erasers respectively.

Further, the surfaces of the strip block I and the strip block II facing the aluminum alloy plate are both arc-shaped surfaces.

Further, it also includes eight travel switches and eight induction devices that cooperate with each other.

Four travel switches are respectively installed on the two sides of the aluminum alloy plate.

Eight induction devices equidistant from each other are installed on the inner surface of the conveyor belt. These eight sensing devices are aligned with the eight travel switches mounted on the aluminum alloy plate.

Further, a dust collection box is installed below the writing board, and the dust collection box is a bar-shaped groove with an open upper end and a closed lower end. The lower end of the dust collecting box is fixed on the frame.

Further, a strip-shaped side pressing plate is respectively installed on the side of the strip block II and the strip block I facing away from the writing board. The upper and lower ends of the side pressing plates are fixed on the upper and lower ends of the frame. Several compression springs are all installed on the side plate faces of the two side pressure plates facing the writing board. These compression springs are respectively in contact with bar block II or bar block I.

The electric erasing blackboard of the utility model has the advantages of low noise, simple structure, convenient operation and easy manufacture. It can be designed as a unit operation mode. According to the needs, the writing board rotates one or several units at a time, which is convenient for teachers to write and improves its use efficiency. Driven by an electric drum, the volume of the motor is reduced, making the appearance more reasonable and beautiful. The edge of the tablet is equipped with a synchronous belt structure, which can prevent it from slipping during operation.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the present invention (remove the writing board of conveyer belt type);

Fig. 2 is the perspective view of writing board;

Fig. 3 is a front view of the present invention.

In the figure: tail roller 1, writing board 2, aluminum alloy plate 3, gear 4, electric roller 5, eraser 6, compression spring 7, side pressure plate 8, dust box 9, frame 10, travel switch 11, flat Belt 12, timing belt 13, induction device 14.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, but it should not be understood that the scope of the above subject matter of the utility model is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present utility model, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present utility model.

An electric erasing type blackboard comprises a tail roller 1, a writing board 2, an aluminum alloy plate 3, an electric roller 5 and a frame 10.

The frame 10 is a rectangular frame. The aluminum alloy plate 3 is a rectangular plate. The upper and lower ends of the aluminum alloy plate 3 are connected to the frame 10 . There is a distance between the left and right ends of the aluminum alloy plate 3 and the frame 10 .

The tail roller 1 and the electric roller 5 are respectively located on both sides of the aluminum alloy plate 3 . The upper and lower ends of the tail roller 1 and the electric roller 5 are respectively connected to the frame 10 . Two ends of the tail roller 1 are respectively equipped with a gear 4 , and the two gears 4 rotate with the rotation of the tail roller 1 . Two ends of the electric roller 5 are respectively equipped with a gear 4 , and the two gears 4 rotate with the rotation of the tail roller 1 .

A strip block I is installed on the side of the tail roller 1 facing away from the aluminum alloy plate 3 . The side of the electric roller 5 facing away from the aluminum alloy plate 3 is equipped with a strip block II. The surfaces of the strip block I and the strip block II facing the aluminum alloy plate 3 are arc-shaped surfaces.

The writing board 2 is a conveyor belt wrapping the tail roller 1 , the electric roller 5 and the aluminum alloy plate 3 . The upper and lower ends of the inner surface of the conveyor belt respectively have a rack that goes around the conveyor belt. Referring to FIG. 2 , the two racks inside the tablet 2 form two synchronous belts 13 at the upper and lower ends, and the part between the two synchronous belts 13 is a flat belt 12 .

The gear 4 installed on the upper end of the tail roller 1 and the electric roller 5 meshes with the rack on the upper end of the conveyor belt. The gear 4 installed at the lower end of the tail roller 1 and the electric roller 5 is engaged with the rack at the lower end of the conveyor belt.

The outer surface of this conveyor belt is the writing surface.

An eraser 6 is installed on the side of the strip block I and the strip block II facing the conveyor belt. The two ends of the conveyor belt are in contact with the two erasers 6 respectively.

It is worth noting that it also includes eight travel switches 11 and eight sensing devices 14 that cooperate with each other. Four travel switches 11 are respectively installed on the two sides of the aluminum alloy plate 3 . Eight induction devices 14 equidistant from each other are installed on the inner surface of the conveyor belt. The eight sensing devices 14 are aligned with the eight travel switches 11 installed on the aluminum alloy plate 3 .

Because the writing board 2 is a structure similar to a conveyor belt, it is driven with the rotation of the cylinder. The timing belt 13 on both sides of the writing board 2 cooperates with the gear 4 structure on the cylinder, which not only makes the transmission stable, but also prevents the occurrence of slippage. The back is close to the aluminum alloy plate 3 structure connected to the frame, which plays a supporting role when the teacher writes on the blackboard. The writing board 2 is made of PU material. The whole writing board is divided into eight units on average, and eight induction devices 14 are installed at the same interval next to the synchronous 13 belts on the writing board back side, and cooperate with the travel switch 11 on the aluminum alloy plate.

A dust collection box 9 is installed below the writing board 2, and the dust collection box 9 is a bar-shaped groove with an open upper end and a closed lower end. The lower end of the dust box 9 is fixed on the frame 10 .

A strip-shaped side pressing plate 8 is respectively installed on the side of the strip block II and the strip block I facing away from the writing board 2 . The upper and lower ends of the side pressing plate 8 are fixed on the upper and lower ends of the frame 10 . Several compression springs 7 are all installed on the side board faces of the two side pressing plates 8 facing the writing board 2 . These compression springs 7 are respectively in contact with the bar II or the bar I.

When in use, start the motorized drum 5, the drum drives the ring-shaped tape-shaped writing board 2 to rotate smoothly, the aluminum alloy plate 3 is close to the back of the writing board 2, and plays a supporting role, and the ring-shaped writing board drives the tail roller 1 to rotate, and the tail roller 1 pairs for writing Plate 2 acts as tension. When the induction device 14 on the writing board 2 ran into the travel switch 11 on the aluminum alloy plate 3, the writing board 2 stopped rotating, and the writing board rotated a unit, and the blackboard eraser 6 also wiped a unit simultaneously. Writing board 2 moves, and blackboard eraser is static, and compression spring 7 is to the pressing effect of blackboard eraser 6 again, makes both joint parts produce frictional force, and blackboard eraser 6 promptly cleans writing board 2, dedusts. The dust that removes falls into movable dust box 9, and dust is full and takes out. If the speed of the writing board 2 is not within the ideal speed, the speed governor can be adjusted to adjust the rotating speed of the drum, so that the transmission of the writing board can be made faster or slower. The profile frame 10 plays the role of overall support for each mechanism.

Claims (5)

1. An electric erasing type blackboard is characterized in that: comprise tail roller (1), writing board (2), aluminum alloy plate (3), electric roller (5) and frame (10); The frame (10) is a rectangular frame; the aluminum alloy plate (3) is a rectangular plate; the upper and lower ends of the aluminum alloy plate (3) are connected to the frame (10); the aluminum alloy plate (3) There is a distance between the left and right ends of and the frame (10); The tail roller (1) and the electric roller (5) are respectively located on both sides of the aluminum alloy plate (3); the upper and lower ends of the tail roller (1) and the electric roller (5) are respectively connected to the frame ( 10) connection; the two ends of the tail roller (1) are respectively equipped with a gear (4), and these two gears (4) rotate with the rotation of the tail roller (1); the electric roller ( 5) A gear (4) is installed on each of the two ends, and the two gears (4) rotate with the rotation of the tail roller (1); A strip block I is installed on the side of the tail roller (1) facing away from the aluminum alloy plate (3); a strip block II is installed on the side of the electric roller (5) facing away from the aluminum alloy plate (3) ; The writing board (2) is a conveyor belt wrapped with the tail roller (1), the electric roller (5) and the aluminum alloy plate (3); the upper and lower ends of the inner surface of the conveyor belt respectively have a rack; the gear (4) installed on the upper end of the tail roller (1) and the electric roller (5) meshes with the rack on the upper end of the conveyor belt; the tail roller (1) and the electric roller (5) The gear (4) installed at the lower end meshes with the rack at the lower end of the conveyor belt; The outer surface of this conveyor belt is the writing surface; Both the strip block I and the strip block II are equipped with a blackboard eraser (6) on the side facing the conveyor belt; the two ends of the conveyor belt are in contact with the two blackboard erasers (6) respectively. 2. The electrically erasable blackboard according to claim 1, characterized in that: the surfaces of the strip block I and the strip block II facing the aluminum alloy plate (3) are both arc-shaped surfaces. 3. The electric erasing type blackboard according to claim 1, characterized in that: it also includes eight travel switches (11) and eight sensing devices (14) cooperating with each other; Four travel switches (11) are respectively installed on the two sides of the aluminum alloy plate (3); Eight induction devices (14) equidistant from each other are installed on the inner surface of the conveyor belt; these eight induction devices (14) are aligned with the eight travel switches (11) installed on the aluminum alloy plate (3). 4. The electric erasing blackboard according to claim 1, characterized in that: a dust collection box (9) is installed below the writing board (2), and the dust collection box (9) is an open upper end , a bar-shaped groove with a closed lower end; the lower end of the dust collecting box (9) is fixed on the frame (10). 5. The electric erasable blackboard according to claim 1, characterized in that: the side of the strip block II and the strip block I facing away from the writing board (2) is respectively equipped with a strip-shaped side pressing plate ( 8); the upper and lower ends of the side pressing plates (8) are fixed on the upper and lower ends of the frame (10); two side pressing plates (8) are equipped with several side plates facing the writing board (2). Compression springs (7); these compression springs (7) are respectively in contact with bar block II or bar block I.