Teaching model device

Abstract

The utility model discloses a teaching model device, and aims to solve the problems that an existing teaching model is single in function, inconvenient to display and adjust, difficult to store and carry and the like. The model comprises a box body, a main display board, two side sliding display boards, a rotating assembly, a lifting assembly and a sound box push-pull assembly. The main display board is used for character recording and data display, and the display boards on the two sides assist in displaying financial data and picture data. The rotating assembly realizes flexible adjustment and locking of the angle of the main display board, and the lifting assembly realizes height adjustment of the box body through motor driving. The sound box push-and-pull assembly automatically pushes out the sound box when the main display board is opened and closed and cooperates with the microphone to enhance the teaching effect. The model is reasonable in design, simple and convenient to operate, forms a suitcase structure during storage, and is convenient to carry. The model integrates diversified display, flexible adjustment and convenient storage, and the teaching efficiency and convenience are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of accounting teaching, in particular to a teaching model device. Background Art

[0002] In the process of accounting teaching, teachers usually need to use various teaching models to assist in explanation in order to improve teaching effectiveness. However, the existing accounting teaching models still have the following problems in use:

[0003] Existing accounting teaching models often have single functions and cannot meet diverse teaching needs. Specifically, some teaching models only have simple display functions and cannot flexibly adjust the display angle and height, resulting in a poor viewing experience for students during the learning process; in addition, existing teaching models also have many inconveniences in storage and carrying, which limits their scope of application in actual teaching; at the same time, when conducting accounting teaching, the voices of teaching staff are often difficult to fully transmit to the back row of the classroom. At this time, teaching staff usually use microphones and speakers for assistance, but some teaching places may not be equipped with speakers, which will affect the teaching effect.

[0004] In view of the above problems, this utility model document proposes a teaching model device. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the existing accounting teaching model in the prior art, such as single function, poor adjustment effect of display angle and height, poor viewing experience, and inconvenient storage and carrying, and to propose a teaching model device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A teaching model device, comprising:

[0008] A box body, wherein the top of the box body is provided with an opening, and the top of the box body is provided with a main display board, and the main display board is used for recording text and displaying teaching materials;

[0009] The main display board further includes a first side display board and a second side display board, wherein the first side display board and the second side display board are both slidably arranged on one side of the main display board, and the first side display board and the second side display board are used to assist the main display board in displaying teaching materials;

[0010] It also includes a rotation assembly, which is used to lock and adjust the rotation of the main display board;

[0011] It also includes a lifting assembly, which is used to adjust the height of the box;

[0012] It also includes two speakers and a push-pull assembly that cooperates with them. The push-pull assembly includes a sliding bracket, a sliding frame, a connecting plate and two connecting rods. The push-pull assembly cooperates with the main display board to realize the extension and retraction of the two speakers when the main display board is opened and closed.

[0013] The two wheels are connected to each other to adjust the speed of the gear train, and the two wheels are connected to each other to adjust the speed of the gear train.

[0014] The lifting mechanism comprises a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism

[0015] In one possible design, an iron plate is fixedly installed on one side of the first side display board, and a plurality of magnet blocks are magnetically connected to one side of the iron plate. The plurality of magnet blocks are used to display financial data in teaching; two storage boxes are fixedly installed on one side of the second side display board, and both storage boxes are made of transparent material, and both have openings on the tops of the two storage boxes. The two storage boxes are used to place and display pictures and materials.

[0016] In a possible design, two support frames are fixedly installed on the side of the main display board away from the display surface, and the two support frames correspond to each other up and down, and both ends of the two support frames are provided with second limiting protrusions, and the top and bottom of the first side display board and the second side display board are provided with sliding grooves, and the inner walls of multiple sliding grooves are slidably connected to the corresponding support frames, and one end of multiple sliding grooves close to the middle of the main display board is provided with a first limiting protrusion, and multiple first limiting protrusions are matched with corresponding second limiting protrusions to prevent the first side display board and the second side display board from detaching from the support frames.

[0017] In a possible design, the length of the first side display panel and the second side display panel when tightly combined does not exceed the length of the main display panel, so as to ensure stable storage of the main display panel.

[0018] In one possible design, a handle is fixedly installed on one side of the box, and four support blocks are fixedly installed on the side of the box away from the handle. The handle is used to facilitate lifting the box in the storage state, and the support blocks are used to facilitate placing the box in the storage state.

[0019] In one possible design, a dial plate is fixedly installed on the top of the main display board, and a groove that cooperates with the dial plate is opened on the top of the box body. The dial plate slides in cooperation with the groove, and the length of one side of the dial plate extending to the outside of the groove does not exceed the height of the support block to ensure that the box body is placed stably in the storage state.

[0020] In a possible design, the push-pull assembly also includes two movable brackets that slide through both sides of the box body respectively, and the two speakers are fixedly mounted on the bottom inner wall of the corresponding movable bracket; the sliding bracket is fixedly mounted inside the box body, and a corresponding limiting slide groove is provided inside the sliding bracket. The sliding bracket is composed of a mounting plate and a slider, and the slider is fixedly mounted on the top of the mounting plate. The slider is slidably connected to the inner wall of the limiting slide groove through a protruding column, and the top of the slider passes through the top of the sliding bracket, and the mounting plate is located below the sliding bracket; the two connecting rods are both located in the box body, and one end of the two connecting rods is passed through The bracket is rotatably connected to one side of an adjacent mobile bracket, and two fixing columns are fixedly installed at the bottom of the mounting plate, and the other ends of the two connecting rods are rotatably connected to the outer walls of the corresponding fixing columns; a fixing plate is provided on one side of the main display board, and the fixing plate is fixedly connected to one side of the two support brackets, and a connecting plate is rotatably installed on one side of the fixing plate through the bracket, and the connecting plate is rotatably installed on one side of the fixing plate through the bracket, and the connecting plate can pull the sliding frame to slide when the main display board is opened and closed, and then cooperate with the two connecting rods to complete the push-pull movement of the two mobile brackets, thereby realizing the push-out and retraction of the two speakers.

[0021] In the present application, when in use, the user can lay the box in the storage state flat and ensure that the main display board is facing upwards; then the user can press the pressing rod, and the pressing rod can push the gear block out of the gear slot. At the same time, the user can use the dial plate to rotate and lift the main display board, so that the main display board is gradually erected; after the main display board is erected, the user can also adjust the inclination angle of the main display board according to actual needs to ensure that the learners can have a better viewing experience of the main display board; when the main display board is adjusted to a suitable angle, stop pressing the pressing rod, and the gear block will be engaged with the gear slot again under the push of the spring, so that the main display board can be locked; the user can write text on one side of the main display board to meet The user can then pull out the first side display board and the second side display board to both sides respectively. The first side display board is provided with a plurality of magnet blocks of various shapes, such as long rectangles or sectors of different sizes, which can be combined to form a simple bar chart or pie chart, which can assist in teaching and explanation to ensure that learners can better understand financial data; the second side display board is provided with two transparent storage boxes, and users can place the materials or pictures to be displayed in the storage boxes, which are convenient for learners to watch; when teaching, users can also adjust the height of the box as needed. At this time, the user only needs to start the motor, and the motor can drive the internal threaded sleeve to rotate through the cooperation of the second synchronous wheel and the two first synchronous wheels. When the user turns the main display board to open it, the main display board can use the connecting plate to pull the sliding frame to move. At this time, the sliding frame can gradually move from the side away from the main display board to a position close to the main display board. In this process, the two connecting rods can gradually move the two sliding frames. The movable bracket is pushed out, and then the two speakers can be pushed out; when the main display board is fully opened, the speakers on both sides can also be fully exposed. At this time, the user can take out the pre-placed microphone from the box. Then, through the cooperation of the microphone and the two speakers, the sound emitted by the user during the teaching process can be clear and loud enough to ensure the smooth progress of the teaching work; when the user completes the teaching work, the box can be lowered in sequence, and the first side display board, the second side display board and the main display board can be folded up. At this time, the two movable brackets will also be retracted into the box with the corresponding speakers, so that the whole device can be formed into a suitcase. The user can use the handle to pull and carry the box, which is convenient for the user to carry it to different places for teaching.

[0022] Beneficial effects: In the present invention, the teaching model device realizes diversified display functions by providing a main display board, a first side display board, and a second side display board; the main display board can be used for recording text and displaying teaching materials, the magnet blocks on the first side display board can be combined to form simple charts to assist in teaching explanations, and the storage box on the second side display board can be used to place and display pictures, materials, and other items, thereby meeting the diverse needs of accounting teaching.

[0023] In the present invention, the teaching model device can flexibly adjust and lock the rotation angle of the main display board through the setting of the rotating component, ensuring that learners can have a good viewing experience; at the same time, the lifting component can adjust the height of the box according to actual needs, so that learners can better view the content on the display board;

[0024] In the present invention, when not in use, the main display panel, the first side display panel, and the second side display panel of the teaching model device can be stored in the box to form a suitcase structure; the user can use the handles on the box to easily carry it to different places for teaching;

[0025] In the teaching model device of the present invention, the first side display board and the second side display board are restricted by the support frame and the limiting protrusion during the sliding process, which can prevent separation and shaking, thereby ensuring the stability of the structure; at the same time, the counterweight plate at the bottom of the box body plays a supporting role during height adjustment, and it can also balance the weight of multiple display boards, further enhancing the stability of the entire device;

[0026] In the present invention, the teaching model device has various components that are reasonably designed and easy to operate. The user only needs to press the push rod to release the restriction on the rotation of the main display board, thereby easily adjusting the tilt angle of the main display board. In addition, the motor-driven lifting component also greatly simplifies the height adjustment operation process.

[0027] In the present invention, the teaching model device can push out and retract the speakers on both sides while the main display board is opened and closed through a push-pull component. Combined with the microphone stored in the box, it can ensure that the teaching staff can make clear and loud sounds when teaching. The equipment has a high degree of integration, which can be conveniently used by teaching staff in various places, which is conducive to the development of teaching work.

[0028] In this utility model, the accounting teaching model integrates diversified display, flexible adjustment, convenient storage and carrying; the main display board and the display boards on both sides meet the diversified teaching needs of text, charts, pictures, etc.; the rotating component and the lifting component design make the angle and height of the display board adjustable, optimizing the viewing experience; when stored, it can form a suitcase structure, which is convenient for carrying to different places; the support frame and the limiting protrusion ensure that the installation structure of the side display board is stable, and the counterweight plate can balance the center of gravity of the device; a retractable speaker is integrated in the box, which cooperates with the opening and closing of the main display board to assist teaching staff in completing teaching work; the overall design is reasonable and easy to operate, and the angle of the display board can be adjusted by pressing the push rod. The motor-driven design simplifies the height adjustment operation, which significantly improves the teaching efficiency and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional structural diagram of a teaching model device proposed in this utility model;

[0030] Figure 2 This is a three-dimensional structural diagram from another perspective of a teaching model device proposed by the present invention;

[0031] Figure 3 This is a schematic diagram of the disassembled structure of the main display board of a teaching model device proposed in the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of a rotating component of a teaching model device proposed by the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of two side display panels of a teaching model device proposed by the present invention;

[0034] Figure 6 This is a schematic diagram of the back structure of the main display board of a teaching model device proposed by the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of a teaching model device proposed by the present invention in a raised state;

[0036] Figure 8 This is a schematic diagram of the lifting component structure of a teaching model device proposed in the present invention;

[0037] Figure 9 This is a schematic diagram of the storage state structure of a teaching model device proposed by the present invention;

[0038] Figure 10 This is a schematic diagram of the disassembled structure of the push-pull components of a teaching model device proposed in the present invention;

[0039] Figure 11This is a schematic diagram of the sliding frame installation structure of a teaching model device proposed by the present invention.

[0040] In the figure: 1. Box body; 2. Connecting block; 3. Main display board; 4. Rotating shaft; 5. Adjusting slot; 6. Gear block; 7. Pressing rod; 8. Spring; 9. Gear slot; 10. First side display board; 11. Second side display board; 12. Iron plate; 13. Magnet block; 14. Storage box; 15. Slide slot; 16. First limiting protrusion; 17. Support frame; 18. Second limiting protrusion; 19. Counterweight plate; 20. Guide rod; 21. Screw; 22. Internally threaded sleeve; 23. Partition; 24. First synchronous wheel; 25. Second synchronous wheel; 26. Motor; 27. Moving bracket; 28. Speaker; 29. ​​Sliding bracket; 30. Fixed plate; 31. Connecting plate; 32. Connecting rod; 33. Sliding frame; 34. Mounting plate; 35. Slider; 36. Fixed column. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Example 1: Reference Figure 1-11 , a teaching model, comprising:

[0043] The box 1 has an opening at the top and a main display board 3 disposed on the top of the box 1. The main display board 3 is used for recording text and displaying teaching materials. A first side display board 10 and a second side display board 11 are also disposed on one side of the main display board 3. These two side display boards are slidably mounted on one side of the main display board 3 to assist the main display board 3 in displaying teaching materials.

[0044] To enable flexible rotation and fixation of the main display panel 3, this embodiment also includes a rotation assembly. This assembly comprises two connecting blocks 2 fixedly mounted on one side of the housing 1, both located near the top of the housing 1. A rotation shaft 4 is fixedly mounted on the bottom of the main display panel 3, with both ends of the shaft 4 being rotatably connected to the two connecting blocks 2.

[0045] Furthermore, to achieve rotational locking, a gear slot 9 is defined on the end of one of the connecting blocks 2, near the rotating shaft 4. The end of the rotating shaft 4, near the gear slot 9, also defines an adjustment slot 5. A gear block 6 is slidably connected to the inner wall of the adjustment slot 5. A spring 8 is fixedly mounted on one side of the gear block 6, the other end of which is fixedly connected to the inner wall of the adjustment slot 5. When the gear block 6 engages the gear slot 9, the rotation of the main display panel 3 is restricted.

[0046] In order to facilitate the removal of the rotation restriction, a pressing rod 7 is fixedly installed on the side of the gear block 6 away from the spring 8. One end of the pressing rod 7 passes through the adjacent connecting block 2. By pushing the pressing rod 7, the gear block 6 can be moved away from the gear slot 9, thereby removing the rotation restriction on the main display board 3.

[0047] To adjust the height of the cabinet 1, this embodiment also includes a lifting assembly. This assembly includes a partition 23 fixedly mounted within the cabinet 1. Two counterweight plates 19 are located at the bottom of the cabinet 1. These counterweight plates 19 not only support the cabinet 1 during height adjustment but also balance the weight of the main display panel 3.

[0048] Two guide rods 20 are fixedly mounted on the top of each counterweight plate 19. These guide rods 20 slide through the bottom of the housing 1 and the top of a partition 23. Two internally threaded sleeves 22 pivotally extend through the interior of the partition 23, the bottom ends of which are rotatably connected to the bottom inner wall of the housing 1. Screws 21 are internally threadedly connected to the internal threads of the internally threaded sleeves 22. The bottom ends of the screws 21 slide through the bottom of the housing 1 and are fixedly connected to the tops of the corresponding counterweight plates 19.

[0049] To achieve the synchronous extension of the two screw rods 21, a first synchronous pulley 24 is fixedly mounted on the outer walls of the two internally threaded sleeves 22. A motor 26 is fixedly mounted on the top of the partition 23. One end of the output shaft of the motor 26 rotates through the bottom of the partition 23 and is fixedly mounted with a second synchronous pulley 25. The second synchronous pulley 25 is connected to the two first synchronous pulleys 24 via a common synchronous belt. When the motor 26 is operating, the synchronous belt drives the two first synchronous pulleys 24 to rotate synchronously, thereby driving the two internally threaded sleeves 22 to rotate synchronously. Due to the threaded connection between the screw rods 21 and the internally threaded sleeves 22, the two screw rods 21 can be extended synchronously, thereby completing the lifting and lowering adjustment of the box body 1.

[0050] In this embodiment, a metal plate 12 is fixedly mounted on one side of the first display panel 10. Multiple magnets 13 are magnetically connected to one side of the metal plate 12. These magnets 13 can be attracted to the metal plate 12 and used to display financial data during teaching. Two storage boxes 14 are fixedly mounted on one side of the second display panel 11. These boxes 14 are made of transparent material and have openings at the top for convenient placement and display of images and materials.

[0051] To facilitate the sliding and positioning of the first and second side display panels 10, 11, in this embodiment, two support brackets 17 are fixedly mounted on the side of the main display panel 3 facing away from the display surface. These two support brackets 17 are positioned one above the other. Second positioning projections 18 are provided at each end of the support brackets 17. Slide grooves 15 are defined at the top and bottom of each of the first and second side display panels 10, 11. The inner walls of these slide grooves 15 are slidably connected to the corresponding support brackets 17.

[0052] Furthermore, a first stopper protrusion 16 is provided at one end of the chute 15 near the middle of the main display panel 3. The first stopper protrusion 16 cooperates with the second stopper protrusion 18 to prevent the first side display panel 10 and the second side display panel 11 from being separated from the support frame 17. Furthermore, to ensure the stable storage of the main display panel 3, the length of the first side display panel 10 and the second side display panel 11 when tightly assembled together does not exceed the length of the main display panel 3.

[0053] This application can be used in the field of accounting teaching technology, and can also be used in other fields applicable to this application.

[0054] Example 2: Reference Figure 1 、 2 4.5. Improvements based on Example 1: A teaching model device applied to the field of accounting teaching technology;

[0055] In this embodiment, a handle is fixedly installed on one side of the box body 1, which can facilitate the lifting of the box body 1 in the storage state. Four support blocks are fixedly installed on the side of the box body 1 away from the handle, which can facilitate the stable placement of the box body 1 in the storage state.

[0056] In this embodiment, a shift plate is fixedly mounted on top of the main display panel 3. A groove is defined on the top of the case 1 for the shift plate to engage with, and the shift plate slides into the groove. The length of one side of the shift plate extending outside the groove does not exceed the height of the support block, ensuring that the case 1 remains stable when stored.

[0057] In this embodiment, a rotating block is rotatably mounted on one end of the pressing rod 7 , and the rotating block can cooperate with the user's finger to prevent the user's finger from feeling uncomfortable due to the rotating friction of the pressing rod 7 when pressing the pressing rod 7 .

[0058] In this embodiment, the shapes of the plurality of magnet blocks 13 are not limited to a single shape, and may also be strips or sectors of different sizes, which can be combined to display financial data.

[0059] Example 3: Reference Figure 1 、 2 , 10, 11, based on the improvement of embodiment 1: a teaching model device, which is applied to the field of accounting teaching technology;

[0060] In this embodiment, two speakers 28 and a push-pull assembly that cooperates with them are also provided in the box body 1. The push-pull assembly includes a sliding bracket 29, a sliding frame 33, a connecting plate 31 and two connecting rods 32. The push-pull assembly cooperates with the main display board 3 and can realize the extension and retraction of the two speakers 28 when the main display board 3 is opened and closed.

[0061] Specifically, the push-pull assembly also includes two movable brackets 27 that slide through both sides of the box body 1 respectively, and the two speakers 28 are fixedly mounted on the bottom inner wall of the corresponding movable bracket 27; the sliding bracket 29 is fixedly mounted inside the box body 1, and the interior of the sliding bracket 29 is provided with a corresponding limiting slide groove. The sliding frame 33 is composed of a mounting plate 34 and a slider 35. The slider 35 is fixedly mounted on the top of the mounting plate 34. The slider 35 is slidably connected to the inner wall of the limiting slide groove through a protruding column. The top of the slider 35 passes through the top of the sliding bracket 29, and the mounting plate 34 is located below the sliding bracket 29;

[0062] Furthermore, the two connecting rods 32 are both located in the box body 1, and one end of the two connecting rods 32 is rotatably connected to one side of the adjacent movable bracket 27 through a bracket. Two fixing columns 36 are fixedly installed on the bottom of the mounting plate 34, and the other ends of the two connecting rods 32 are rotatably connected to the outer wall of the corresponding fixing column 36; a fixing plate 30 is provided on one side of the main display board 3, and the fixing plate 30 is fixedly connected to one side of the two support frames 17. The connecting plate 31 is rotatably installed on one side of the fixing plate 30 through the bracket, and the other end of the connecting plate 31 is rotatably connected to the top of the slider 35. The connecting plate 31 can pull the sliding frame 33 to slide when the main display board 3 is opened and closed, and then cooperate with the two connecting rods 32 to complete the push-pull movement of the two movable brackets 27, thereby realizing the push-out and retraction of the two speakers 28.

[0063] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 26 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0064] After the main display board 3 is erected, the user can also adjust the inclination angle of the main display board 3 according to actual needs to ensure that the learners can have a better viewing experience of the main display board 3; when the main display board 3 is adjusted to a suitable angle, the pressing rod 7 is stopped, and the gear block 6 will be engaged with the gear slot 9 again under the push of the spring 8, thereby locking the main display board 3; the user can write text on one side of the main display board 3 to meet the needs of teaching work; then the user can pull out the first side display board 10 and the second side display board 11 to both sides respectively. A plurality of magnet blocks 13 of various shapes are provided on the first side display board 10, such as long rectangles or sectors of different sizes, which can be combined The two counterweight plates 19 are supported by the two counterweight plates 19 and gradually rise to adjust the height of the box 1 so that the learners can better view the main display board 3. When the user raises the main display board 3 to start teaching, the top opening of the box 1 will be behind the main display board 3. The user can take out the items placed in the box 1 at any time during the teaching process, which can ensure that the teaching work is carried out more smoothly.

[0065] When the user rotates the main display panel 3 to open it, the main display panel 3 can use the connecting plate 31 to pull the sliding frame 33 to move. At this time, the sliding frame 33 can gradually move from the side away from the main display panel 3 to the position close to the main display panel 3. During this process, the two connecting rods 32 can gradually push out the two movable brackets 27, thereby realizing the pushing out of the two speakers 28. When the main display panel 3 is fully opened, the speakers 28 on both sides can also be fully exposed. At this time, the user can take out the pre-placed microphone from the box body 1. After that, through the cooperation of the microphone and the two speakers 28, the sound emitted by the user during the teaching process can be clear and loud enough, ensuring the smooth progress of the teaching work.

[0066] When the user completes the teaching work, the box body 1 can be lowered in sequence, and the first side display board 10, the second side display board 11 and the main display board 3 can be folded up. At this time, the two movable brackets 27 will also be retracted into the box body 1 with the corresponding speakers 28, so that the entire device can be formed into a suitcase. The user can use the handle to lift and carry the box body 1, which is convenient for the user to carry it to different places for teaching work.

[0067] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A teaching model device, comprising a box (1), a main display board (3), a rotating assembly, a lifting assembly, a first side display board (10), a second side display board (11), two speakers (28) and a set of push-pull assemblies, characterized in that: The top of the box (1) is provided with an opening, and the main display board (3) is provided on the top of the box (1) for recording text and displaying teaching materials; the first side display board (10) and the second side display board (11) are both slidably provided on one side of the main display board (3) for assisting the main display board (3) in displaying teaching materials; The rotating assembly comprises two connecting blocks (2) fixedly mounted on one side of the box body (1); a rotating shaft (4) is fixedly mounted on the bottom of the main display board (3); and both ends of the rotating shaft (4) are respectively rotatably connected to the two connecting blocks (2) to achieve flexible rotation of the main display board (3); The lifting assembly includes a partition (23) fixedly mounted inside the box (1), two counterweight plates (19) are provided at the bottom of the box (1), and the lifting assembly realizes height adjustment of the box (1) through the coordinated use of a guide rod (20), an internal threaded sleeve (22), a screw (21), a first synchronous wheel (24), a motor (26) and a second synchronous wheel (25); The push-pull assembly comprises a sliding bracket (29), a sliding frame (33), a connecting plate (31) and two connecting rods (32). The push-pull assembly cooperates with the main display board (3) and can realize the extension and retraction of the two speakers (28) when the main display board (3) is opened and closed.

2. A teaching model device according to claim 1, characterized in that: An iron plate (12) is fixedly mounted on one side of the first side display board (10), and a plurality of magnet blocks (13) are magnetically connected to one side of the iron plate (12); two storage boxes (14) are fixedly mounted on one side of the second side display board (11), and the storage boxes (14) are made of a transparent material and have an opening at the top.

3. A teaching model device according to claim 1, characterized in that: Two support frames (17) are fixedly installed on the side of the main display board (3) away from the display surface, and the top and bottom of the first side display board (10) and the second side display board (11) are both provided with a slide groove (15), and the inner wall of the slide groove (15) is slidably connected with the corresponding support frame (17) to realize the sliding and limiting of the first side display board (10) and the second side display board (11); the two ends of the support frame (17) are both provided with a second limiting protrusion (18); the end of the slide groove (15) close to the middle of the main display board (3) is provided with a first limiting protrusion (16), and the first limiting protrusion (16) cooperates with the second limiting protrusion (18).

4. A teaching model device according to claim 1, characterized in that: The rotating assembly further comprises a gear groove (9) provided at one end of one of the connecting blocks (2) close to the rotating shaft (4); an adjusting groove (5) is provided at one end of the rotating shaft (4) close to the gear groove (9); a gear block (6) is slidably connected to the inner wall of the adjusting groove (5); a spring (8) is fixedly mounted on one side of the gear block (6); the other end of the spring (8) is fixedly connected to the inner wall of one side of the adjusting groove (5); a pressing rod (7) is fixedly mounted on the side of the gear block (6) away from the spring (8), one end of the pressing rod (7) passes through the adjacent connecting block (2); and a rotating block is rotatably mounted on one end of the pressing rod (7).

5. A teaching model device according to claim 1, characterized in that: The lifting assembly further comprises a guide rod (20) fixedly mounted on the top of the counterweight plate (19), the guide rod (20) slidingly passing through the bottom of the box body (1) and the top of the partition (23); the partition (23) is internally rotatably penetrated by an internal threaded sleeve (22), the bottom end of the internal threaded sleeve (22) is rotatably connected to the inner wall of the bottom of the box body (1), the internal thread of the internal threaded sleeve (22) is connected to a screw rod (21), the bottom end of the screw rod (21) slides through the bottom of the box body (1) and is fixedly connected to the top of the corresponding counterweight plate (19); the outer walls of the two internal threaded sleeves (22) are fixedly sleeved with a first synchronous wheel (24), the top of the partition (23) is fixedly mounted with a motor (26), one end of the output shaft of the motor (26) rotates through the bottom of the partition (23) and is fixedly mounted with a second synchronous wheel (25), the second synchronous wheel (25) and the two first synchronous wheels (24) are connected by the same synchronous belt transmission.

6. A teaching model device according to claim 1, characterized in that: The push-pull assembly further comprises two movable brackets (27) which slide through the two sides of the box (1) respectively, and the two speakers (28) are fixedly mounted on the bottom inner wall of the corresponding movable bracket (27); the sliding bracket (29) is fixedly mounted inside the box (1), and a corresponding limiting slide groove is opened inside the sliding bracket (29); the sliding bracket (33) is composed of a mounting plate (34) and a slider (35), and the slider (35) is fixedly mounted on the top of the mounting plate (34). The slider (35) is slidably connected to the inner wall of the limiting slide groove through a boss, and the top of the slider (35) passes through the top of the sliding bracket (29). The mounting plate (34) is located on the sliding bracket. The two connecting rods (32) are both located in the box body (1), and one end of each connecting rod (32) is rotatably connected to one side of the adjacent movable bracket (27) through a bracket. Two fixing columns (36) are fixedly installed at the bottom of the mounting plate (34), and the other ends of each connecting rod (32) are rotatably connected to the outer wall of the corresponding fixing column (36). A fixing plate (30) is provided on one side of the main display board (3), and the fixing plate (30) is fixedly connected to one side of the two support frames (17). The connecting plate (31) is rotatably mounted on one side of the fixing plate (30) through a bracket, and the other end of the connecting plate (31) is rotatably connected to the top of the slider (35).

7. A teaching model device according to claim 1, characterized in that: A handle is fixedly mounted on one side of the box body (1), and four support blocks are fixedly mounted on a side of the box body (1) away from the handle.

8. A teaching model device according to claim 7, characterized in that: A dial plate is fixedly mounted on the top of the main display board (3), and a groove is provided on the top of the box body (1) to match the dial plate. The dial plate and the groove are slidably matched, and the length of one side of the dial plate extending to the outside of the groove does not exceed the height of the support block.

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