Multimedia blackboard structure

Abstract

The utility model relates to the technical field of multimedia blackboards, and provides a multimedia blackboard structure which comprises a bottom plate, a fixing block is fixed in the middle of the top face of the bottom plate, a connecting hole is formed in the side wall of the fixing block, a supporting plate is arranged above the bottom plate, a rectangular groove is formed in the middle of the bottom face of the supporting plate, and the fixing block is located on the inner side of the rectangular groove. An expansion groove is formed in the inner wall of one side of the lower end of the rectangular groove and located on one side of the fixing block, a rectangular plate is movably inserted into the inner side of the rectangular groove, a first rotating groove is formed in the lower end of the rectangular plate, the fixing block is located on the inner side of the first rotating groove, and a first fixing shaft is fixed to the inner wall of the first rotating groove. The multimedia equipment is fixed on the inner side of the protection box, the protection box can be overturned downwards so as to be folded and stored on one side of the supporting plate, and the supporting plate can be overturned downwards, folded and stored on the top face of the bottom plate, so that the occupied space is greatly reduced, and storage or long-distance transportation after loading is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of multimedia blackboard technology, specifically a multimedia blackboard structure. Background Technology

[0002] With the increasing maturity of information and electronic technologies in modern society, many schools and related educational institutions have begun to use multimedia blackboards for teaching on a large scale. Multimedia blackboards combine traditional chalk writing blackboards with multimedia teaching machines, providing students with learning references more conveniently and intuitively.

[0003] Currently, most existing multimedia blackboard structures are fixed structures, large in size, and cumbersome to install. Once installed, they can only be fixed in the installation position, which brings great trouble to the relevant personnel when long-distance transportation or storage is required, thus their practicality is generally limited.

[0004] Therefore, a multimedia blackboard structure that is easy to store, fold, and transport over long distances is needed. Utility Model Content

[0005] To address the aforementioned issues, this invention proposes a multimedia blackboard structure that is easy to fold and store, suitable for long-distance transportation, and can significantly reduce space occupancy.

[0006] To achieve the above objectives, the present invention proposes the following specific solutions:

[0007] A multimedia blackboard structure includes a base plate, a fixing block fixed to the center of the top surface of the base plate, a connecting hole on the side wall of the fixing block, a support plate above the base plate, a rectangular groove in the center of the bottom surface of the support plate, the fixing block located inside the rectangular groove, an expansion groove on the inner wall of one side of the lower end of the rectangular groove, the expansion groove located on one side of the fixing block, a rectangular plate movably inserted into the inner wall of the rectangular groove, a first rotating groove at the lower end of the rectangular plate, the fixing block located inside the first rotating groove, a first fixing shaft fixed to the inner wall of the first rotating groove, the first fixing shaft passing through the connecting hole, a second rotating groove at the upper end of the support plate, and a fixing block fixed to the inner wall of the second rotating groove. The second fixed shaft has a movable hole in the middle of the top surface of the inner side of the rectangular groove, which communicates with the inner side of the second rotating groove. A limit rod is fixed in the middle of the top surface of the rectangular plate, which passes through the movable hole and is located below the second fixed shaft. A protective box is provided on one side of the upper end of the support plate. A rotating plate is fixed on the outer wall of one side of the lower end of the protective box. The rotating plate is located inside the second rotating groove. A rotating hole is provided on the side wall of the rotating plate, through which the second fixed shaft passes. A limit hole is provided on the edge of the rotating plate, which passes through the rotating hole. The upper end of the limit rod is movably inserted into the inner side of the limit hole. A multimedia device is fixed in the middle of the inner wall of one side of the protective box.

[0008] As a preferred technical solution of the multimedia blackboard structure of this utility model, a fixing frame is symmetrically fixed on one side wall of the protective box, a writing board is movably inserted into the inner side of the fixing frame, a stop block is fixed on the top edge of the writing board, and a handle is fixed in the middle of one side wall of the writing board.

[0009] As a preferred technical solution of the multimedia blackboard structure of this utility model, the fixing frame has a notch on one side wall, a first magnetic block is fixed on the inner wall of the notch, and a second magnetic block is fixed on the edge of the writing board side end face, and the second magnetic block and the first magnetic block are magnetically attracted to each other.

[0010] As a preferred technical solution of the multimedia blackboard structure of this utility model, a spring is movably sleeved on the outer side of the lower end of the limiting rod, the lower end of the spring is fixed on the top surface of the rectangular plate, and the upper end of the spring is fixed on the inner wall of the rectangular groove.

[0011] As a preferred technical solution of the multimedia blackboard structure of this utility model, a fixing plate is fixed at the lower end of the support plate. The fixing plate is located above the base plate and on the other side of the fixing block. A through hole is provided in the middle of the fixing plate. A screw is movably inserted into the inside of the through hole. A nut is fixed at the top of the screw and is located above the fixing plate.

[0012] As a preferred technical solution of the multimedia blackboard structure of this utility model, the top surface of the base plate is provided with a threaded groove, and the lower end of the screw is threadedly connected to the inside of the threaded groove.

[0013] As a preferred technical solution of the multimedia blackboard structure of this utility model, the lower end of the protective box is symmetrically fixed with a tray, and the tray is located below the writing board.

[0014] As a preferred technical solution of the multimedia blackboard structure of this utility model, the upper side wall of the support plate is symmetrically fixed with pads, and the pads are located below the protective box.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The multimedia device of this utility model is fixed inside the protective box. The rotating plate on the lower outer wall of the protective box can rotate inside the second rotating groove at the upper end of the support plate, thereby driving the protective box to flip downward and fold and store on one side of the support plate. The support plate can also flip downward by rotating the rectangular plate and fold flat on the top surface of the bottom plate. The bottom plate, together with the pad, can support the support plate and the protective box after storage, thus facilitating loading, transportation and storage.

[0017] This invention features a writing board inserted into the inner side of each of the two fixing brackets on the side wall of the protective box. When the two writing boards are moved and closed, they can protect the multimedia device from collision damage during transportation or storage. The second magnetic block on the side end face of the writing board and the first magnetic block in the notch in the side wall of the fixing bracket can attract each other after the two writing boards are closed, thereby preventing the two writing boards from accidentally separating. Furthermore, when using the multimedia device for teaching, chalk writing can be performed simultaneously through the writing boards, thus improving the teaching quality. Attached Figure Description

[0018] To better describe the technical solution of this utility model in detail, the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional view of the overall structure provided by this utility model;

[0020] Figure 2 This is a three-dimensional sectional view of the present invention;

[0021] Figure 3 This is a perspective view of the support plate of this utility model;

[0022] Figure 4 This is a perspective view of the writing board of this utility model;

[0023] Figure 5 This utility model Figure 1 Enlarged view of point A in the middle;

[0024] Figure 6 This utility model Figure 2 Enlarged view of point B in the middle;

[0025] Figure 7 This utility model Figure 2 Enlarged view of point C in the middle;

[0026] Figure 8 This utility model Figure 2 Enlarged view of point D in the middle;

[0027] Figure 9 This utility model Figure 2 Enlarged diagram of point E in the middle.

[0028] In the diagram: 1. Base plate; 11. Fixing block; 111. Connecting hole; 12. Threaded groove; 2. Support plate; 21. Pad; 22. Rectangular groove; 221. Expansion groove; 222. Moving hole; 23. Rectangular plate; 231. Limiting rod; 232. Spring; 233. First rotating groove; 234. First fixed shaft; 24. Fixing plate; 241. Through hole; 25. Screw; 251. Nut; 26. Second rotating groove; 261. Second fixed shaft; 3. Protective box; 31. Support plate; 32. Fixing frame; 321. Notch; 322. First magnetic block; 33. Writing board; 331. Stop block; 332. Handle; 333. Second magnetic block; 34. Rotating plate; 341. Rotating hole; 342. Limiting hole; 4. Multimedia equipment. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0030] Please see Figure 1-9As shown, this utility model provides the following technical solution: a multimedia blackboard structure, including a base plate 1, a fixing block 11 fixed in the middle of the top surface of the base plate 1 for connecting a rectangular plate 23, a connecting hole 111 on the side wall of the fixing block 11, the connecting hole 111 allows the rectangular plate 23 to rotate, a support plate 2 is provided above the base plate 1 to support the protective box 3, a rectangular groove 22 is provided in the middle of the bottom surface of the support plate 2 for connecting and moving the rectangular plate 23, the fixing block 11 is located inside the rectangular groove 22, an expansion groove 221 is provided on the inner wall of one side of the lower end of the rectangular groove 22, when the support plate 2 is flipped or folded on the top surface of the base plate 1, the fixing block 11 will be located inside the expansion groove 221, the expansion groove 221 is located on one side of the fixing block 11, a rectangular plate 23 is movably inserted into the inner side of the rectangular groove 22 to support and fix the limiting rod 231, and a rectangular plate 23 is provided at the lower end of the rectangular plate 23. The first rotating groove 233 has a fixing block 11 located inside it, allowing the rectangular plate 23 to rotate relative to the fixing block 11. A first fixing shaft 234 is fixed to the inner wall of the first rotating groove 233 to maintain the connection between the fixing block 11 and the rectangular plate 23. The first fixing shaft 234 passes through the connecting hole 111. A pad 21 is symmetrically fixed to one side wall of the upper end of the support plate 2. After the support plate 2 is flipped and laid flat, it supports the support plate 2. The pad 21 is located below the protective box 3. In this solution, by lifting the support plate 2 to a certain height, the support plate 2 can be rotated to one side. The rectangular plate 23 rotates synchronously around the first fixing shaft 234 as the center, allowing the support plate 2 to be flipped and folded downwards and stored flat on the top surface of the base plate 1. After being laid flat, the pad 21 can cooperate with the base plate 1 to provide support, which helps to reduce space occupation and facilitates transportation and storage. Example 2

[0031] In another embodiment of this solution, refer to Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 9As shown, specifically, the upper end of the support plate 2 is provided with a second rotating groove 26 for accommodating the rotating plate 34. A second fixed shaft 261 is fixed to the inner wall of the second rotating groove 26 to maintain the connection between the rotating plate 34 and the support plate 2. A moving hole 222 is provided in the middle of the inner top surface of the rectangular groove 22 to provide a channel for the movement of the limiting rod 231. The moving hole 222 is in communication with the inner side of the second rotating groove 26. A limiting rod 231 is fixed in the middle of the top surface of the rectangular plate 23 to limit the rotation of the rotating plate 34. The limiting rod 231 passes through the moving hole 222. 1. Located below the second fixed shaft 261, a protective box 3 is provided on one side of the upper end of the support plate 2 for fixing and protecting the multimedia equipment 4. A rotating plate 34 is fixed to the outer wall of one side of the lower end of the protective box 3, allowing the protective box 3 to be flipped. The rotating plate 34 is located inside the second rotating groove 26. The side wall of the rotating plate 34 is provided with a rotating hole 341 for connecting the second fixed shaft 261. The second fixed shaft 261 passes through the rotating hole 341. A limiting hole 342 is provided on the side of the rotating plate 34, and the limiting hole 342 passes through the rotating hole 341. The upper end of the limiting rod 231 is movable. The movable insertion is inside the limiting hole 342, which can limit the rotation of the rotating plate 34. The lower end of the limiting rod 231 is movably sleeved with a spring 232. The elasticity of the spring 232 can pull the rectangular plate 23 to prevent it from dislodging from the inside of the rectangular groove 22. The lower end of the spring 232 is fixed to the top surface of the rectangular plate 23, and the upper end of the spring 232 is fixed to the inner wall of the rectangular groove 22. A multimedia device 4 is fixed in the middle of the inner wall of one side of the protective box 3 (the multimedia device 4 is existing technology, and the specific operation mode and principle can be referred to the multimedia teaching machine in the existing technology). (The opening and closing are controlled by an external power source, so it will not be described in detail here.) In this solution, after the support plate 2 is lifted upward, the limiting rod 231 will disengage from the inside of the limiting hole 342. Then, the rotating plate 34 can rotate inside the second rotating groove 26 with the second fixed shaft 261 as the center, so that the protective box 3 can be flipped to one side and finally flipped downward and folded into the support plate 2. In addition, the support plate 2 can be flipped and stored on the top surface of the base plate 1, which reduces the space required for the overall structure and provides convenience for transportation and storage. Example 3

[0032] In another embodiment of this solution, refer to Figure 1 , Figure 2 and Figure 7As shown, specifically, a fixing plate 24 is fixed to the lower end of the support plate 2 to provide a basis for setting the through hole 241. The fixing plate 24 is located above the base plate 1 and on the other side of the fixing block 11. The fixing plate 24 has a through hole 241 in the middle for connecting the screw 25. The screw 25 is movably inserted into the inside of the through hole 241 to fix the support plate 2. A nut 251 is fixed to the top of the screw 25 to restrict the upward movement of the fixing plate 24. The nut 251 is located above the fixing plate 24. The top surface of the base plate 1 has a threaded groove 12 for threaded connection of the screw 25. The lower end of the screw 25 is threaded into the inside of the threaded groove 12. In this solution, after the screw 25 is threaded into the inside of the threaded groove 12, the nut 251 is located above the fixing plate 24, restricting the upward movement of the fixing plate 24, thereby fixing the support plate 2 and preventing the support plate 2 from moving upward relative to the base plate 1, thus ensuring that the multimedia device 4 is sufficiently stable and reliable during use. Example 4

[0033] In another embodiment of this solution, refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, specifically, a fixing frame 32 is symmetrically fixed to one side wall of the protective box 3 for connecting the writing board 33. The writing board 33 is movably inserted into the inner side of the fixing frame 32 for writing on the chalk board. A stop block 331 is fixed to the top edge of the writing board 33 to prevent the two writing boards 33 from detaching from the inner side of the fixing frame 32 when they are moved separately. A handle 332 is fixed to the middle of one side wall of the writing board 33 for easy pulling. A notch 321 is provided on one side wall of the fixing frame 32 for setting the first magnetic block 322. The first magnetic block 322 is fixed to the inner wall of one side of the notch 321. A second magnetic block 322 is fixed to the edge of the side end face of the writing board 33. The magnetic block 333 and the first magnetic block 322 are magnetically attracted to each other and fix the writing board 33 together. The writing board 33 can only be moved by pulling it with external force. The protective box 3 has a support plate 31 symmetrically fixed at the lower end, which supports the writing board 33 from below. The support plate 31 is located below the writing board 33. After the two writing boards 33 are closed relative to each other, they can protect the multimedia device 4 from collision damage. After the two writing boards 33 are separated to both sides, they can assist in blackboard teaching when the multimedia device 4 is being used for teaching, thereby improving the quality of teaching.

[0034] The working principle and usage process of this utility model:

[0035] In use, the limiting rod 231 is movably inserted into the limiting hole 342 to restrict the rotation of the rotating plate 34. The screw 25 is threaded into the threaded groove 12 and presses the fixing plate 24 with the nut 251 to restrict the upward movement of the support plate 2, thereby ensuring the stability of the protective box 3. By pulling the handles 332 on both sides respectively, the two writing boards 33 are pulled to separate them. When the stop block 331 on the top surface of the writing board 33 collides with the fixing frame 32, the two writing boards 33 move into place. Then, teaching can be carried out through the multimedia device 4. At the same time, chalk can be used to write on the writing board 33 to assist teaching and improve teaching quality.

[0036] When transportation or storage is required, push the two writing boards 33 to move towards each other, so that the two writing boards 33 contact and close together to protect the multimedia device 4. The first magnetic block 322 and the second magnetic block 333 attract each other, thus ensuring that the two writing boards 33 will not separate accidentally. Then turn the nut 251 to unscrew the screw 25 from the inside of the threaded groove 12. Step on the base plate 1 with your foot and lift the protective box 3 upwards by hand. When the protective box 3 is lifted, the rotating plate 34 drives the support plate 2 to move upwards. The upward movement of the support plate 2 stretches the spring 232, and the limiting rod 231 disengages from the inside of the limiting hole 342. Then, flip the protective box 3 to one side, causing the rotating plate 34 to rotate in a second rotation. The inner side of the moving groove 26 rotates around the second fixed shaft 261, turning the protective box 3 completely downward until it is in contact with the side wall of the support plate 2. Then the support plate 2 is lifted upward and moved up a little distance, so that the rectangular plate 23 can rotate through the first fixed shaft 234 inside the connecting hole 111. The support plate 2 is also turned to one side (the direction of the support plate 2 turning is opposite to that of the protective box 3). Finally, it is turned downward, and the fixing block 11 is located inside the expansion groove 221. The support plate 2 is folded and laid flat on the top surface of the base plate 1. The two pads 21 are in contact with the ground for support, thus completing the overall folding and storage, which can greatly reduce the space occupied and make it suitable for loading, transportation or storage.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multimedia blackboard structure comprising a base plate (1), characterized in that: A fixing block (11) is fixed in the middle of the top surface of the base plate (1). The fixing block (11) has a connecting hole (111) on its side wall. A support plate (2) is provided above the base plate (1). A rectangular groove (22) is provided in the middle of the bottom surface of the support plate (2). The fixing block (11) is located inside the rectangular groove (22). An expansion groove (221) is provided on the inner wall of one side of the lower end of the rectangular groove (22). The expansion groove (221) is located on one side of the fixing block (11). The inner wall of the rectangular groove (22) is located inside the rectangular groove (22). A rectangular plate (23) is movably inserted. The lower end of the rectangular plate (23) is provided with a first rotating groove (233). The fixing block (11) is located inside the first rotating groove (233). A first fixing shaft (234) is fixed to the inner wall of the first rotating groove (233). The first fixing shaft (234) passes through the connecting hole (111). The upper end of the support plate (2) is provided with a second rotating groove (26). The inner wall of the second rotating groove (26) is fixed with a second fixing shaft (261). The rectangular plate (23) is movably inserted with a first rotating groove (233). The lower end of the rectangular plate (23) is provided with a first rotating groove (233). The lower end of the rectangular plate (23) is provided with a first rotating groove (233). The lower end of the rectangular plate (23) is provided with a first rotating groove (233). The lower end of the rectangular plate (23) is provided with a first rotating groove (233). The lower end of the rectangular plate (23) is provided with a first rotating groove (233). The lower end of the fixed groove ... A movable hole (222) is provided in the middle of the inner top surface of the groove (22). The movable hole (222) is connected to the inner side of the second rotating groove (26). A limit rod (231) is fixed in the middle of the top surface of the rectangular plate (23). The limit rod (231) passes through the movable hole (222). The limit rod (231) is located below the second fixed shaft (261). A protective box (3) is provided on one side of the upper end of the support plate (2). A rotating plate (34) is fixed on the outer wall of one side of the lower end of the protective box (3). The rotating plate (34) is located inside the second rotating groove (26). The rotating plate (34) has a rotating hole (341) on its side wall. The second fixed shaft (261) passes through the rotating hole (341). The rotating plate (34) has a limiting hole (342) on its side. The limiting hole (342) passes through the rotating hole (341). The upper end of the limiting rod (231) is movably inserted into the inside of the limiting hole (342). A multimedia device (4) is fixed in the middle of the inner wall of one side of the protective box (3).

2. The multimedia blackboard structure of claim 1, wherein: The protective box (3) has a fixing frame (32) symmetrically fixed on one side wall. A writing board (33) is movably inserted into the inside of the fixing frame (32). A stop block (331) is fixed on the top edge of the writing board (33). A handle (332) is fixed in the middle of one side wall of the writing board (33).

3. The multimedia blackboard structure of claim 2, wherein: The fixing frame (32) has a notch (321) on one side wall, and a first magnetic block (322) is fixed on the inner wall of one side of the notch (321). A second magnetic block (333) is fixed on the edge of the side end face of the writing board (33). The second magnetic block (333) and the first magnetic block (322) are magnetically attracted to each other.

4. The multimedia blackboard structure of claim 3, wherein: A spring (232) is movably sleeved on the outer side of the lower end of the limiting rod (231). The lower end of the spring (232) is fixed on the top surface of the rectangular plate (23), and the upper end of the spring (232) is fixed on the inner wall of the rectangular groove (22).

5. The multimedia blackboard structure of claim 4, wherein: The support plate (2) is fixed with a fixing plate (24) at its lower end. The fixing plate (24) is located above the base plate (1) and on the other side of the fixing block (11). The fixing plate (24) has a through hole (241) in the middle. A screw (25) is movably inserted into the inside of the through hole (241). A nut (251) is fixed at the top of the screw (25) and is located above the fixing plate (24).

6. The multimedia blackboard structure of claim 5, wherein: The bottom plate (1) has a threaded groove (12) on its top surface, and the lower end of the screw (25) is threaded to the inside of the threaded groove (12).

7. The multimedia blackboard structure of claim 6, wherein: The protective box (3) has a tray (31) symmetrically fixed at its lower end, and the tray (31) is located below the writing board (33).

8. The multimedia blackboard structure of claim 7, wherein: A pad (21) is symmetrically fixed on one side wall of the upper end of the support plate (2), and the pad (21) is located below the protective box (3).

Images