CN211787745U - English teaching board - Google Patents

Abstract

An English teaching board, which effectively solves the problem that a conventional English teaching board is prone to shaking, is not easy to move, occupies a relatively large vertical space when it is not needed, and cannot be adjusted in terms of the writing area and the height of the teaching board. The problem includes the box body, which is provided with a movable plate that can be lifted and lowered, the lower end of the lower end of the movable plate is rotatably connected to the right side with a second gear, and the rear side of the second gear is meshed with a second rack, the second rack It is fixedly connected with the rear side of the right part of the box body, and the right side of the upper end of the moving plate is rotatably connected with a first gear that can rotate with the rotation of the second gear, the front end of the first gear is meshed with a first rack, and the left The side is fixedly connected with a telescopic plate, the telescopic plate is slidably connected to the inside of the moving plate, and the moving plate moves upward to form a structure in which the telescopic plate protrudes from the moving plate.

Description

an English teaching board

technical field

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

Background technique

English is a compulsory course in middle schools. English teachers often involve in teaching English vocabulary and phrases in their teaching. Especially teachers need to teach junior high school students English writing standards. These require a lot of writing on the blackboard. The existing English teaching The board is installed on the bracket through two installation points. The whole of the English teaching board is not well supported. During the process of writing on the English teaching board, the teaching board is prone to shaking, and most of the teaching boards used now are It is fixed, not easy to move, and will occupy a relatively large vertical space when it is not needed, and the problem of the writeable area and the height of the teaching board cannot be adjusted.

Utility model content

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an English teaching board, which effectively solves the problem that a conventional English teaching board is prone to shaking, is not easy to move, and may Occupies a relatively large vertical space, as well as the problem that the writing area and the height of the teaching board cannot be adjusted.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the present utility model comprises a box body, the box body is provided with a movable plate that can be lifted and lowered, a second gear is rotatably connected to the right side of the lower end of the mobile plate, and the second gear is rotatably connected to the right side. The rear side is meshed with a second rack, which is fixedly connected with the rear side of the right part of the box body, and the upper right side of the moving plate is rotatably connected with a first gear that can rotate with the rotation of the second gear. The front end of the first gear A first rack is engaged, the left side of the first rack is fixedly connected with a telescopic plate, the telescopic plate is slidably connected to the inside of the moving plate, and the moving plate moves upward to form a structure in which the telescopic plate protrudes from the moving plate.

Preferably, a motor is fixedly connected to the lower bottom surface of the box body, a first bevel gear is fixedly connected to the left end of the motor, a second bevel gear is engaged with the upper end of the first bevel gear, and the second bevel gear is rotatably connected to the bottom surface of the box body , the upper end of the second bevel gear is coaxially fixed with a third pulley, the outer edge of the third pulley is connected with a second belt, and the right end of the second belt is connected with a fourth pulley;

The rear side of the moving plate is fixedly connected with two threaded blocks, the lower end of each threaded block is threadedly connected with a threaded rod, and the third pulley and the fourth pulley are respectively fixedly connected with the corresponding threaded rod above.

Preferably, the left side of the second gear is coaxially fixed with a second pulley, the second pulley is rotatably connected to the lower end of the right side of the moving plate, the outer edge of the second pulley is connected with a first belt, the first belt The upper end of the belt is connected with a first pulley, the first pulley is rotatably connected to the upper end of the right side of the moving plate, and the first pulley and the first gear are coaxially fixed.

Preferably, a reversible long plate is hinged on the upper part of the front end of the box body, a block is arranged above the long plate, the block is rotatably connected to the upper part of the box body, and a rectangular block is fixedly connected to the middle of the box body.

Preferably, two supporting rods are fixedly connected to the lower end of the box body, the two supporting rods are arranged symmetrically on the left and right, and the front and rear ends of each supporting rod are fixedly connected with universal wheels.

The utility model has novel structure, ingenious conception, simple and convenient operation, and effectively solves the problem that the conventional English teaching board is easy to shake, is not easy to move, occupies a relatively large vertical space when it is not needed, and can The problem that the writing area and the height of the teaching board cannot be adjusted.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Figure 1 is a schematic diagram of the overall structure of the utility model.

FIG. 2 is a schematic diagram of the folded state of the utility model.

FIG. 3 is a schematic cross-sectional view of the rear side of the box body of the present invention.

FIG. 4 is a schematic diagram of the cooperation between the motor and the third pulley of the present invention.

FIG. 5 is a schematic diagram of the cooperation of the second rack and the first rack of the present invention.

FIG. 6 is a schematic diagram of the cooperation between the second rack and the telescopic plate of the present invention.

FIG. 7 is a schematic diagram of the cooperation of the first pulley and the second pulley of the present invention.

Labels in the figure: 1- telescopic plate, 2- moving plate, 3- box body, 4- long plate, 5- support rod, 6- universal wheel, 7- gear rod, 8- rectangular block, 9- first tooth Strip, 10-first gear, 11-first belt, 12-threaded block, 13-threaded rod, 14-third pulley, 15-motor, 16-second belt, 17-fourth pulley, 18- First bevel gear, 19-second bevel gear, 20-second rack, 21-second gear, 22-first pulley, 23-second pulley.

Detailed ways

The specific embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings 1-7.

The utility model includes a box body 3, a movable plate 2 that can be lifted and lowered is arranged in the box body 3, a second gear 21 is rotatably connected to the right side of the lower end of the movable plate 2, and the rear side of the second gear 21 is engaged with a second tooth The rack 20, the second rack 20 are fixedly connected to the rear side of the right part of the box body 3, and the upper right side of the moving plate 2 is rotatably connected with a first gear 10 that can rotate with the rotation of the second gear 21. The front end of the first gear 10 A first rack 9 is engaged, the left side of the first rack 9 is fixedly connected with a telescopic plate 1, the telescopic plate 1 is slidably connected to the interior of the moving plate 2, and the moving plate 2 moves upward to form the telescopic plate 1 protruding from the moving plate 2 Structure.

In the daily state, the device is in the folded state as shown in Figure 2. When it needs to be used, move the device to the designated area. At this time, the moving plate 2 rises from the box body 3, which will drive the second The gear 21 rises, because the second rack 20 is fixed, it will drive the meshed second gear 21 to rotate, the second gear 21 will rotate and drive the first gear 10 to rotate, and the first gear 10 will drive the meshing The first rack 9 moves upward, which in turn drives the telescopic board 1 in the moving board 2 to move upward, and the front surfaces of both the telescopic board 1 and the moving board 2 can be written, and the appropriate height can be adjusted to suit teachers of different heights Writing, and the writing area can be adjusted, which is very convenient.

A motor 15 is fixedly connected to the lower bottom surface of the box body 3, a first bevel gear 18 is fixedly connected to the left end of the motor 15, a second bevel gear 19 is engaged with the upper end of the first bevel gear 18, and the second bevel gear 19 is rotatably connected to On the inner bottom surface of the box body 3, the upper end of the second bevel gear 19 is coaxially fixed with the third pulley 14, the outer edge of the third pulley 14 is connected with the second belt 16, and the right end of the second belt 16 is connected with the fourth belt wheel 17, two threaded blocks 12 are fixedly connected to the rear side of the moving plate 2, the lower end of each threaded block 12 is threadedly connected with a threaded rod 13, the third pulley 14 and the fourth pulley 17 are respectively corresponding to the upper The threaded rod 13 is fixedly connected.

When the motor 15 rotates, it drives the first bevel gear 18 to rotate, the first bevel gear 18 drives the meshed second bevel gear 19 to rotate, the second bevel gear 19 drives the third pulley 14 above to rotate, and the third pulley rotates. 14 The second belt 16 drives the fourth pulley 17 to rotate synchronously, and then drives the third pulley 14 and the threaded rod 13 at the upper end of the fourth pulley 17 to rotate synchronously, thereby driving the two threaded blocks 12 to rise synchronously, In turn, the moving plate 2 is driven to move upward.

The left side of the second gear 21 is coaxially fixed with a second pulley 23 , the second pulley 23 is rotatably connected to the lower end of the right side of the moving plate 2 , and the outer edge of the second pulley 23 is connected with the first belt 11 , the upper end of the first belt 11 is connected with a first pulley 22, the first pulley 22 is rotatably connected to the upper end of the right side of the moving plate 2, and the first pulley 22 and the first gear 10 are coaxially fixed.

When the second gear 21 rotates, it will drive the second pulley 23 to rotate, the second pulley 23 drives the first pulley 22 at the upper end through the first belt 11 , and then drives the first gear 10 to rotate to realize the first gear 10 Synchronous rotation with the second gear 21 .

A reversible long plate 4 is hinged on the upper front end of the box body 3 , a stopper is arranged above the long plate 4 , the stopper is rotatably connected to the upper part of the box body 3 , and a rectangular block 8 is fixedly connected to the middle of the box body 3 .

In the daily state, as shown in Figure 2, the gear lever 7 is in a vertical state, which can block the upper end of the longboard 4 and prevent the longboard 4 from turning forward. When something needs to be placed on the lower part of the teaching board, this Only need to turn the lever 7 to the horizontal state, at this time release the restraint on the long board 4, at this time the long board 4 can be turned down, and the rectangular block 8 can support the baffle column, and then can be carried out on the baffle Place items.

Two support rods 5 are fixedly connected to the lower end of the box body 3 , and the two support rods 5 are arranged symmetrically on the left and right sides. The front and rear ends of each support rod 5 are fixedly connected with a universal wheel 6 .

The universal wheel 6 at the lower end of the support rod 5 can conveniently move the device, and the longer length of the support rod 5 can effectively prevent the teaching board from shaking or even tipping over during the writing process.

When the utility model is used, in the daily state, the device is in the folded state as shown in Figure 2. When it needs to be used, the device is moved to a designated area. When the motor 15 rotates, it will drive the first bevel gear 18 to carry out Rotating, the first bevel gear 18 drives the meshed second bevel gear 19 to rotate, the second bevel gear 19 drives the third pulley 14 above to rotate, and the third pulley 14 drives the fourth pulley 17 through the second belt 16 for synchronization. The threaded rods 13 at the upper ends of the third pulley 14 and the fourth pulley 17 are respectively driven to rotate synchronously, thereby driving the two threaded blocks 12 to rise synchronously, and then driving the moving plate 2 to move upward, and the moving plate 2 moves from the box body. 3. When the second gear 21 rises inward, it will drive the second gear 21 to rise. Because the second rack 20 is fixed, it will drive the meshed second gear 21 to rotate. When the second gear 21 rotates, it will drive the second gear 21 to rotate. The second pulley 23 rotates, the second pulley 23 drives the first pulley 22 at the upper end through the first belt 11, and then drives the first gear 10 to rotate, so as to realize the synchronous rotation of the first gear 10 and the second gear 21. A gear 10 will drive the meshed first rack 9 to move upward, and then drive the telescopic plate 1 in the moving plate 2 to move upward, and the front surfaces of both the telescopic plate 1 and the moving plate 2 can be written, and the appropriate height can be adjusted. It is very convenient to write with teachers of different heights, and the writing area can be adjusted, which is very convenient, and in the daily state, as shown in FIG. Prevent the longboard 4 from turning forward. When you need to place something on the lower part of the teaching board, you only need to turn the gear lever 7 to the horizontal state. At this time, the constraint on the longboard 4 is released, and the longboard 4 can be Flip down, and the rectangular block 8 can hold the baffle to the column, and then you can place items on the baffle.

The utility model has novel structure, ingenious conception, simple and convenient operation, and effectively solves the problem that the conventional English teaching board is easy to shake, is not easy to move, occupies a relatively large vertical space when it is not needed, and can The problem that the writing area and the height of the teaching board cannot be adjusted.

Finally, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. , it can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model, All should be included within the protection scope of the present invention.

Claims (5)

1. The utility model provides an english teaching board, including box (3), a serial communication port, be equipped with movable plate (2) of liftable in box (3), the lower extreme right side of movable plate (2) is rotated and is connected with second gear (21), the rear side meshing of second gear (21) has second rack (20), second rack (20) and box (3) right part rear side fixed connection, the upper end right side of movable plate (2) is rotated and is connected with first gear (10) that can rotate along with second gear (21), the front end meshing of first gear (10) has first rack (9), the left side fixedly connected with expansion plate (1) of first rack (9), expansion plate (1) sliding connection is inside movable plate (2), movable plate (2) rebound forms the structure that expansion plate (1) stretches out from movable plate (2).

2. The English teaching board according to claim 1, wherein a motor (15) is fixedly connected to the lower bottom surface inside the box body (3), a first bevel gear (18) is fixedly connected to the left end of the motor (15), a second bevel gear (19) is meshed to the upper end of the first bevel gear (18), the second bevel gear (19) is rotatably connected to the lower bottom surface inside the box body (3), a third belt wheel (14) is coaxially and fixedly connected to the upper end of the second bevel gear (19), a second belt (16) is connected to the outer edge of the third belt wheel (14), and a fourth belt wheel (17) is connected to the right end of the second belt (16);

the rear side of the moving plate (2) is fixedly connected with two thread blocks (12), the lower end thread of each thread block (12) is connected with a threaded rod (13), and a third belt wheel (14) and a fourth belt wheel (17) are fixedly connected with the threaded rods (13) corresponding to the upper portions of the third belt wheel and the fourth belt wheel respectively.

3. The English teaching board according to claim 1, wherein a second belt wheel (23) is coaxially and fixedly connected to the left side of the second gear (21), the second belt wheel (23) is rotatably connected to the lower end of the right side of the moving plate (2), a first belt (11) is connected to the outer edge of the second belt wheel (23), a first belt wheel (22) is connected to the upper end of the first belt (11), the first belt wheel (22) is rotatably connected to the upper end of the right side of the moving plate (2), and the first belt wheel (22) and the first gear (10) are coaxially and fixedly connected.

4. The English teaching board according to claim 1, wherein the upper part of the front end of the box body (3) is hinged with a turnover long board (4), a stop block is arranged above the long board (4) and is rotatably connected to the upper part of the box body (3), and the middle part of the box body (3) is fixedly connected with a rectangular block (8).

5. An English teaching board according to claim 1, wherein the lower end of the box body (3) is fixedly connected with two support rods (5), the two support rods (5) are arranged in bilateral symmetry, and the front end and the rear end of each support rod (5) are fixedly connected with universal wheels (6).

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