CN206475648U - A kind of English teaching board - Google Patents

Abstract

The utility model relates to the technical field of educational appliances, and discloses an English teaching board, which includes a square blackboard and a blackboard eraser. The upper and lower frames of the blackboard are provided with T-shaped slide grooves, and T-shaped sliders are slidingly connected in the T-shaped slide grooves. There are two guide rails connected between the shaped sliders. The blackboard eraser includes a long box-shaped housing with an open bottom surface on one side. A roller eraser is connected to the housing for rotation. A flat funnel-shaped wind guide is arranged inside the housing. The large mouth end of the windshield covers the roller wiper, and the small mouth end of the air guide cover is exposed to the housing. A motor is installed on the housing, and the output shaft of the motor is connected to the roller wiper transmission. There are sliding blocks on both sides of the housing, and the sliding block is connected to the guide rail. Sliding connection, the length direction of the housing and the axis of the roller wiper are all parallel to the left and right frames of the blackboard, and the radial outer edge of the roller wiper and the open bottom surface of the housing are all attached to the blackboard. The utility model greatly saves physical strength, and the entire blackboard can be wiped clean only by moving the blackboard eraser two or three times back and forth, and the erasing is very fast.

Description

an english teaching board

technical field

The utility model relates to the technical field of educational appliances, in particular to an English teaching board.

Background technique

Blackboard and blackboard eraser are necessary teaching tools in English classroom teaching. Teachers and students can use chalk to write on the blackboard at will, then use blackboard eraser to erase, and then write repeatedly.

But when erasing with blackboard eraser, a lot of dust will be produced, and these dusts are scattered around in the classroom, and some of them will be inhaled by teachers and students, seriously affecting their health.

Therefore electric dust-free blackboard eraser arises at the historic moment, and there are mainly two kinds of electric dust-free blackboard erasers on the market at present.

One is an electronic vacuuming blackboard and a matching blackboard eraser. It is to place the high-pressure vacuum board behind the glass blackboard or wooden blackboard, and wipe the blackboard with a brush or a common blackboard eraser made of porous material. The principle is that in the high-voltage electrostatic field formed on the blackboard surface, the dust adheres to the blackboard surface, and its charge polarity is neutral. When the dust is wiped up by the moving blackboard eraser, its charge polarity is the same as that of the high-voltage dust collection board and is repelled, because the polarity of the moving blackboard eraser is opposite to that of the high-voltage dust collection board under the action of the strong electric field corona , so the dust picked up is repelled by the polarity of the high-pressure vacuum board into the blackboard eraser brush or porous material to play the role of dust collection.

The other is a vacuum-type blackboard eraser. The principle is to use the rotating blades at the bottom of the blackboard eraser to rotate to generate air suction, and the dust generated during the wiping process is sucked into the blackboard eraser cavity or dust bag to achieve the effect of dust collection.

But the price of the first scheme is relatively expensive, and the installation cost is too high. Although the cost of the second option is relatively low, the size of the blackboard eraser is similar to that of ordinary blackboard erasers. When using it, it needs to be wiped repeatedly on the blackboard surface many times, and it also needs to be dragged with a vacuum pipeline, which greatly increases the labor cost of teachers. Or the labor intensity of students.

Utility model content

The utility model provides a fast and labor-saving dust-absorbing English teaching board in order to overcome the above-mentioned shortcomings in the prior art.

The utility model realizes above-mentioned purpose through following technical scheme.

An English teaching board, comprising a square blackboard and a blackboard eraser, the upper and lower frames of the aforementioned blackboard are provided with T-shaped chutes whose grooves are parallel to the upper and lower frames, and T-shaped sliders are respectively slidably connected in the T-shaped chutes, and the T-shaped Two guide rails whose axes are parallel to the left and right frames of the blackboard are connected between the sliders. The aforementioned blackboard eraser includes a long box-shaped housing with an open bottom surface on one side, and a roller eraser is connected in rotation in the housing. A flat funnel-shaped windshield, the big end of the windshield covers the roller wiper, the small mouth end of the windshield is exposed to the casing, the casing is provided with a motor, the output shaft of the motor is connected with the roller wiper transmission, and the There are sliding blocks on both sides, and the sliding blocks are slidably connected with the guide rails. The length direction of the housing and the axis of the roller wiper are parallel to the left and right frames of the blackboard, and the radial outer edge of the roller wiper and the open bottom surface of the housing are attached to each other. on the blackboard.

The small mouth end of the air guide cover in this solution is used to connect the dust suction pipeline, and the dust suction effect can be improved through the air guide cover. The blackboard eraser slides through the T-shaped chute and two guide rails to cover almost the entire blackboard surface when erasing. When the blackboard eraser is not needed, the blackboard eraser can be moved to the side without affecting the writing on the blackboard surface. This solution only needs to be moved The blackboard can be erased, which can greatly save energy. Moreover, when the length of the roller eraser is designed to be one-third of the height of the blackboard to the full height, it only needs to move the blackboard eraser two or three times to almost wipe the entire blackboard surface clean, and the erasing is very fast.

As a further improved structure, the above-mentioned guide rail is slidingly connected with a four-line three-grid chalk liner, and a set screw is threaded on the four-line three-grid chalk liner, and the four-line three-grid can be locked by turning the set screw The position of the chalk liner on the rail. While erasing, it can also slide out the four lines and three grids for writing English, which is very convenient for English teaching.

As a further improved structure, the above-mentioned housing is connected with a micro-vacuum cleaner, and the dust-suction port of the micro-vacuum cleaner is sealed and communicated with the small mouth end of the above-mentioned wind guide cover, so that there is no need to drag the dust-suction pipeline, which saves labor and does not affect the appearance sex.

As a further improved structure, rectangular iron plates are arranged evenly at intervals on the back of the blackboard, and magnetic strips are evenly arranged in the above-mentioned housing. This structure can make the blackboard eraser closely adhere to the blackboard surface and improve the erasing effect.

As a further improved structure, the above-mentioned motor is a DC motor, the above-mentioned micro-vacuum cleaner is a DC-driven vacuum cleaner, and a battery pack for powering the motor and the micro-vacuum cleaner is connected to the above-mentioned casing. This structure can save the dragging of the circuit, further saving labor and ensuring aesthetics.

Compared with the prior art, the utility model mainly has the following beneficial effects: when the blackboard eraser slides through the T-shaped chute and two guide rails for erasing, it almost covers the entire blackboard surface, and the blackboard eraser can be moved to one side when the blackboard eraser is not needed It will not affect the writing on the blackboard, which can greatly save energy. When the length of the roller eraser is designed to be one-third of the height of the blackboard to the full height, you only need to move the blackboard eraser two or three times to wipe the entire blackboard clean. Erases very quickly.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of an embodiment of the utility model.

Fig. 2 is a schematic diagram of a partial three-dimensional structure of a blackboard in an embodiment of the present invention.

Fig. 3 is a schematic diagram of the three-dimensional structure of the blackboard eraser in the embodiment of the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of the blackboard eraser in the embodiment of the present invention.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described. The accompanying drawings are for illustrative purposes only and should not be construed as limiting the patent.

In order to describe this embodiment more concisely, some components that are known to those skilled in the art but are not related to the main content of the invention will be omitted in the drawings or descriptions. In addition, for the convenience of expression, some parts in the drawings will be omitted, enlarged or reduced, but it does not represent the size or overall structure of the actual product.

Example:

As shown in Figure 1, an English teaching board includes a rectangular blackboard 1 and a blackboard eraser 2, wherein the blackboard 1 is a wooden blackboard, which can be hung on the wall or supported by a bracket.

As shown in Figure 2, the upper and lower frames of the blackboard 1 are provided with a T-shaped chute 11 whose groove direction is parallel to the upper and lower frames, and T-shaped sliders 12 are respectively slidably connected in the T-shaped chute 11, between the T-shaped sliders 12 Two guide rails 13 whose axes are parallel to the left and right frames of the blackboard 1 are connected.

As shown in Figures 3 and 4, the blackboard eraser 2 includes a long box-shaped housing 21 with an open bottom surface on one side, and a roller eraser 22 is rotatably connected to the housing 21, and a flat funnel-shaped air guide is provided in the housing 21. Cover 23, the large mouth end of wind guide cover 23 covers roller wiper 22, the small mouth end of wind guide cover 23 is exposed to housing 21, and housing 21 is provided with motor 24, and the output shaft of motor 24 and roller wiper 22 adopt synchronous belt 25 transmission connection, the two sides of housing 21 are provided with sliding block 26.

As shown in Figure 1 again, the sliding block 26 is slidably connected with the guide rail 13, and the longitudinal direction of the housing 21 and the axis center of the roller wiper 22 are all parallel to the left and right frames of the blackboard 1, and the radially outer edge of the roller wiper 22 and the housing The exposed bottom surface of 21 is all pasted on the blackboard surface.

A four-line three-grid chalk liner 27 is slidably connected on the guide rail 13, and a set screw 28 is threaded on the four-line three-grid chalk liner 27, and the four-line three-grid chalk liner 27 can be locked by turning the set screw 28 27 position on the guide rail 13. While erasing, it can also slide out the four lines and three grids for writing English, which is very convenient for English teaching.

As shown in Fig. 3 and Fig. 4 again, the housing 21 is connected with a micro-vacuum cleaner 29, and the dust suction port of the micro-vacuum cleaner 29 is sealed and communicated with the small mouth end of the wind guide cover 23, so that it is not necessary to drag the dust suction pipeline, which saves labor and Does not affect aesthetics.

As shown in Figure 2, rectangular iron plates 14 are evenly arranged on the back of the blackboard 1, and magnetic strips (not shown in the figure) are evenly arranged in the housing 21. This structure can make the blackboard eraser 2 closely fit on the blackboard surface , to improve the erasing effect.

The motor 24 in this embodiment is a DC motor, and the micro-vacuum cleaner 29 is a DC-driven vacuum cleaner. As shown in FIGS. This structure can save the dragging of the circuit, further saving labor and ensuring aesthetics.

In this embodiment, the wind guide cover 23 can be used to improve the dust collection effect. The T-shaped chute 11 and two guide rails 13 make the blackboard eraser 2 slide and almost cover the entire blackboard surface when erasing. When the blackboard eraser 2 is not needed, the blackboard eraser 2 can be moved aside without affecting writing on the blackboard surface.

In this embodiment, only the blackboard eraser 2 needs to be moved, which can greatly save energy. And the length of roller eraser 22 in the present embodiment is 1/2nd of the height of blackboard 1, only need to move blackboard eraser 2 two or three times like this and just can wipe clean whole blackboard surface, erases very fast.

The above is only a specific embodiment of the utility model, but the design concept of the utility model is not limited thereto, and all non-essential modifications made to the utility model by utilizing the utility model concept all fall under the protection of the utility model within range.

Claims (5)

1. a kind of English teaching board, comprise square blackboard and blackboard eraser, it is characterized in that, the upper and lower frame of described blackboard is provided with its groove to the T-shaped chute that is parallel with upper and lower frame, in the T-shaped chute, slidingly connects respectively T-shaped sliders, two guide rails whose axes are parallel to the left and right frames of the blackboard are connected between the T-shaped sliders. There is a roller wiper, and a flat funnel-shaped air guide cover is installed inside the housing. The large mouth end of the air guide cover covers the roller wiper, and the small mouth end of the air guide cover is exposed to the housing. A motor is installed on the housing. The output shaft of the motor is connected to The roller wiper is connected by transmission. There are sliding blocks on both sides of the housing, and the sliding block is slidably connected with the guide rail. The open bottom surface of the housing is all pasted on the blackboard surface. 2. The English teaching board according to claim 1, wherein a four-line three-grid chalk liner is slidably connected to the guide rail, and a set screw is threaded on the four-line three-grid chalk liner, The position of the four-line three-grid chalk liner on the guide rail can be locked by turning the set screw. 3. The English teaching board according to claim 1 or 2, characterized in that a micro-vacuum cleaner is connected to the housing, and the suction port of the micro-vacuum cleaner is in sealing communication with the small opening of the wind guide cover. 4. The English teaching board according to claim 3, characterized in that rectangular iron plates are evenly spaced on the back of the blackboard, and magnetic strips are evenly arranged in the housing. 5. The English teaching board according to claim 4, characterized in that, the motor is a DC motor, the micro-vacuum cleaner is a DC-driven vacuum cleaner, and the housing is connected with a power supply for the motor and the micro-vacuum cleaner. battery pack.