Foldable demonstration board

Abstract

The utility model provides a foldable demonstration board, which relates to the technical field of teaching, and comprises a demonstration board body, the surface of the demonstration board body is provided with a folding device, the folding device comprises a mounting pipe, the mounting pipe is fixedly connected with the surface of the demonstration board body, the inner wall of the mounting pipe is rotatably connected with a support frame, and the support frame is fixedly connected with the surface of the demonstration board body. Fixing rods are fixedly connected to the sides, close to each other, of the inner walls of the supporting frames, screw rods are connected to the surfaces of the fixing rods in a penetrating and threaded mode, adjusting blocks are fixedly connected to the arc surfaces of the mounting pipes, a plurality of adjusting grooves which are evenly and circumferentially distributed are formed in the surfaces of the adjusting blocks, and the screw rods are connected with the inner walls of the adjusting grooves in an inserted mode; when the demonstration board body is used, the demonstration board body can be folded more quickly and conveniently, the occupied space for storage and use is reduced, the demonstration board body can be transferred and taken conveniently, and the use convenience and functionality of the demonstration board body are further improved.

Description

Technical Field

[0001] This utility model relates to the field of teaching technology, and in particular to a foldable demonstration board. Background Technology

[0002] A presentation board is a teaching tool used to explain and clarify knowledge, and to help others understand it, such as a teacher's instruction to students or a detailed explanation of a particular problem.

[0003] Traditional demonstration boards are typically placed on the ground using a base, and then written or drawn on using writing tools to elaborate on the knowledge content, thus assisting in teaching. However, in actual use, it has been found that some demonstration boards are fixedly connected to the base, making them difficult to fold and shrink, taking up a lot of space, and making it inconvenient to move and store the demonstration boards, thus reducing the convenience and effectiveness of their use. Utility Model Content

[0004] This utility model addresses the problem that some demonstration boards are fixedly connected to the base frame, making them difficult to fold and shrink, occupying a large space, and inconvenient to move and store, thus reducing the convenience and effectiveness of the demonstration board. Therefore, a foldable demonstration board is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a foldable demonstration board, comprising a demonstration board body, a folding device provided on the surface of the demonstration board body, the folding device including an installation tube, the installation tube being fixedly connected to the surface of the demonstration board body, a support frame being rotatably connected to the inner wall of the installation tube, a fixing rod being fixedly connected to one side of the inner wall of the support frame that is close to each other, a screw being threaded through the surface of the fixing rod, an adjusting block being fixedly connected to the arc surface of the installation tube, a plurality of evenly circumferentially distributed adjusting grooves being formed on the surface of the adjusting block, the screw being inserted into the inner wall of the adjusting groove, a rotating rod being rotatably connected through one side of the inner wall of the support frame that is close to each other, two supporting legs being fixedly connected to the arc surface of the rotating rod, bolts being threaded through the two sides of the support frame respectively, the bolts abutting against the arc surface of the rotating rod.

[0006] The effects achieved by the above components are as follows: the demonstration board body can be folded more quickly and conveniently during use, reducing the space occupied for storage and use, facilitating the transfer and retrieval of the demonstration board body, and further improving the convenience and functionality of the demonstration board body.

[0007] Preferably, a connecting rope is fixedly connected to the surface of the bolt, and the other end of the connecting rope is fixedly connected to the surface of the support frame.

[0008] The effect achieved by the above components is that the bolts are easier to remove during use by setting the connecting rope, thereby fixing the position of the support legs and better placing the demonstration board body on the ground with the help of the folding device.

[0009] Preferably, one end of the screw is fixedly connected to an operating block, and the surface of the operating block is provided with a plurality of anti-slip protrusions.

[0010] The effect achieved by the above components is that the operation block makes it more convenient and faster to rotate the screw, thereby fixing the angle position of the demonstration board body more quickly.

[0011] Preferably, a stop block is fixedly connected to the arc surface of the screw, and the stop block is located close to the fixed rod and the adjusting block.

[0012] The effect achieved by the above components is that, by setting the stop, the screw is stably assembled on the fixed rod, and it is not easy for it to rotate excessively and detach, resulting in the loss of the screw, thus ensuring the stable positioning of the demonstration board body.

[0013] Preferably, one end of each of the two support legs is fixedly connected to a reinforcing sleeve, which is a rubber sleeve.

[0014] The effect achieved by the above components is that, by setting up the reinforcing sleeve, the friction is further increased when the two support legs come into contact and press against the ground, making it less prone to shaking, thereby ensuring the stable use of the demonstration board body.

[0015] Preferably, the surface of the demonstration board body is provided with a protective device, the protective device including two protective plates, one side surface of each of the two protective plates is provided with an installation groove, the inner wall of the installation groove is slidably connected to an installation rod, the installation rod is fixedly connected to the surface of the demonstration board body, the cross section of the installation rod is "T" shaped, and the specifications and dimensions of the installation rod are adapted to the installation groove.

[0016] The effect achieved by the above components is that when the demonstration board is not in use, it can better ensure that the surface of the demonstration board is not easily contacted or collided with other objects, thus preventing damage to the writing surface, thereby ensuring the normal use of the demonstration board and extending its service life.

[0017] Preferably, the surfaces of the two protective plates are respectively provided with fixing grooves, and the inner walls of the fixing grooves are fitted with clamping plates, the cross-section of which is "U" shaped.

[0018] The effect achieved by the above components is as follows: through the snap-fit ​​setting of the fixing groove and the card plate, when the two protective plates cover the surface of the demonstration board body, the card plate is snapped into the fixing groove on the surface of the two protective plates, thereby ensuring the stability of the position of the protective plates and better protecting the demonstration board body.

[0019] Preferably, a positioning groove is provided on one side surface of each of the two protective plates, and a positioning block is slidably connected to the inner wall of the positioning groove. The positioning block is fixedly connected to the surface of the demonstration plate body.

[0020] The effect achieved by the above components is that the sliding arrangement of the positioning block and the positioning groove allows the protective plate to slide more stably on the mounting rod, making it less likely for the protective plate to slip off the mounting rod, thus ensuring the normal use of the protective device.

[0021] In summary, the beneficial effects of this utility model are as follows:

[0022] The demonstration board can be folded more quickly and easily during use, reducing the space occupied during storage and use, facilitating the transfer and retrieval of the demonstration board, and further improving the convenience and functionality of the demonstration board. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the folding device of this utility model;

[0025] Figure 3 This utility model Figure 2 A side view of the three-dimensional structure;

[0026] Figure 4 This is a three-dimensional structural diagram of the protective device of this utility model.

[0027] Legend: 1. Demonstration board body; 2. Folding device; 21. Mounting tube; 22. Support frame; 23. Fixing rod; 24. Screw; 25. Adjusting block; 26. Adjusting groove; 27. Rotating rod; 28. Support leg; 29. ​​Bolt; 210. Connecting rope; 211. Operating block; 212. Stop block; 213. Reinforcing sleeve; 3. Protective device; 31. Protective plate; 32. Mounting groove; 33. Mounting rod; 34. Positioning groove; 35. Positioning block; 36. Fixing groove; 37. Clamping plate. Detailed Implementation

[0028] Reference Figure 1 As shown, this embodiment discloses a foldable demonstration board, including a demonstration board body 1, a folding device 2 provided on the surface of the demonstration board body 1, and a protective device 3X provided on the surface of the demonstration board body 1.

[0029] Reference Figure 1 and Figure 2 as well as Figure 3 As shown, this embodiment discloses a folding device 2 including a mounting tube 21, which is fixedly connected to the surface of the demonstration board body 1. A support frame 22 is rotatably connected to the inner wall of the mounting tube 21. A fixing rod 23 is fixedly connected to one side of the inner wall of the support frame 22 that is close to each other. A screw 24 is threaded through the surface of the fixing rod 23. An adjusting block 25 is fixedly connected to the arc surface of the mounting tube 21. Several evenly distributed circumferential adjusting grooves 26 are formed on the surface of the adjusting block 25. The screw 24 is inserted into the inner wall of the adjusting groove 26. A rotating rod 27 is rotatably connected to one side of the inner wall of the support frame 22 that is close to each other. Two supporting legs 28 are fixedly connected to the arc surface of the rotating rod 27. Bolts 29 are threaded through the two sides of the support frame 22 and abut against the arc surface of the rotating rod 27. When the demonstration board body 1 is used for auxiliary explanation during a teaching demonstration, the rotating rod 27 on the support frame 22 is rotated first, causing the two supporting legs 28 fixedly connected to the rotating rod 27 to rotate. The folding device 2 is operated to adjust the angle between the support leg 28 and the support frame 22. Then, the two bolts 29 on the support frame 22 are rotated until they contact and press against the arc surface of the rotating rod 27 to stabilize the support frame 22 and the support leg 28 are placed stably on the ground. Then, the demonstration board body 1 is rotated so that the mounting tube 21 fixedly connected to the demonstration board body 1 rotates with the support frame 22 until the angle of the demonstration board body 1 is adjusted. Then, the screw 24 on the fixing rod 23 is rotated until the screw 24 is inserted into the inner wall of the adjustment groove 26 of the adjustment block 25 on the surface of the mounting tube 21, so that the angle of the demonstration board body 1 is fixed. When the demonstration board body 1 is idle, the same operation is performed to make the components of the folding device 2 fit against the surface of the demonstration board body 1. At this time, the demonstration board body 1 can be folded more quickly and conveniently when in use, reducing the space occupied for storage and use, facilitating the transfer and retrieval of the demonstration board body 1, and further improving the convenience and functionality of the demonstration board body 1.

[0030] Reference Figure 1 and Figure 2 as well as Figure 3As shown, this embodiment discloses that a connecting rope 210 is fixedly connected to the surface of the bolt 29, and the other end of the connecting rope 210 is fixedly connected to the surface of the support frame 22. The setting of the connecting rope 210 makes it easier to pick up the bolt 29 during use, thereby fixing the position of the support leg 28 and better placing the demonstration board body 1 on the ground with the help of the folding device 2. One end of the screw 24 is fixedly connected to an operating block 211. The surface of the operating block 211 is provided with several anti-slip protrusions. The setting of the operating block 211 makes it easier and faster to rotate the screw 24, thereby fixing the angle position of the demonstration board body 1 more quickly.

[0031] Reference Figure 1 and Figure 2 as well as Figure 3 As shown, this embodiment discloses that a stop 212 is fixedly connected to the arc surface of the screw 24, and the stop 212 is located close to the fixed rod 23 and the adjusting block 25. By setting the stop 212, the screw 24 is stably assembled on the fixed rod 23, and it is not easy to excessively rotate and disengage, resulting in the loss of the screw 24. This ensures the stable positioning of the demonstration board body 1. One end of each of the two support legs 28 is fixedly connected to a reinforcing sleeve 213. The reinforcing sleeve 213 is a rubber sleeve. By setting the reinforcing sleeve 213, the friction is further increased when the two support legs 28 are pressed against the ground, making it less likely to shake, thereby ensuring the stable use of the demonstration board body 1.

[0032] Reference Figure 1 and Figure 4 As shown, this embodiment discloses a protective device 3 comprising two protective plates 31. Each of the two protective plates 31 has a mounting groove 32 on one side surface. A mounting rod 33 is slidably connected to the inner wall of the mounting groove 32. The mounting rod 33 is fixedly connected to the surface of the demonstration board body 1. The mounting rod 33 has a "T"-shaped cross-section, and its dimensions are compatible with the mounting groove 32. When the demonstration board body 1 is idle, the two protective plates 31 slidably and fixedly connected to the mounting rod 33 on the surface of the demonstration board body 1, causing the mounting groove 32 on the protective plates 31 to slide on the surface of the mounting rod 33 until the two protective plates 31 simultaneously cover the surface of the demonstration board body 1 and contact each other. At this time, when the demonstration board body 1 is stored idle, it can better ensure that the surface of the demonstration board body 1 is not easily contacted or collided with other objects, thus preventing damage to the writing surface and ensuring the normal use of the demonstration board body 1, extending its service life.

[0033] Reference Figure 1 and Figure 4As shown, this embodiment discloses that the surfaces of the two protective plates 31 are respectively provided with fixing grooves 36, and the inner walls of the fixing grooves 36 are fitted with clamping plates 37. The cross-section of the clamping plates 37 is "U" shaped. Through the clamping arrangement of the fixing grooves 36 and the clamping plates 37, when the two protective plates 31 cover the surface of the demonstration board body 1, the clamping plates 37 are clamped into the fixing grooves 36 on the surfaces of the two protective plates 31, thereby ensuring the stability of the position of the protective plates 31 and better protecting the demonstration board body 1. The one side surface of the two protective plates 31 is respectively provided with positioning grooves 34, and the inner walls of the positioning grooves 34 are slidably connected with positioning blocks 35. The positioning blocks 35 are fixedly connected to the surface of the demonstration board body 1. Through the sliding arrangement of the positioning blocks 35 and the positioning grooves 34, the protective plates 31 can slide more stably on the mounting rods 33, making it less likely for the protective plates 31 to slip off the mounting rods 33, thus ensuring the normal use of the protective device 3.

[0034] Working principle: When the demonstration board body 1 is used for auxiliary explanation during a teaching demonstration, firstly, rotate the rotating rod 27 on the support frame 22, causing the two support legs 28 fixedly connected to the rotating rod 27 to rotate, so that the included angle between the support legs 28 and the support frame 22 is adapted for use. Then, rotate the two bolts 29 on the support frame 22 until the bolts 29 contact and press against the arc surface of the rotating rod 27 to stabilize it, and so that the support frame 22 and the support legs 28 are stably placed on the ground. Then, rotate the demonstration board body 1, causing the mounting tube 21 fixedly connected to the demonstration board body 1 and the support frame 22 to rotate, until... The angle of the demonstration board body 1 is adapted for use. Then, the screw 24 on the fixing rod 23 is rotated until the screw 24 is inserted into the inner wall of the adjustment groove 26 of the surface adjustment block 25 of the mounting tube 21, so that the angle of the demonstration board body 1 is fixed. When the demonstration board body 1 is idle, the same operation is performed to make the components of the folding device 2 fit against the surface of the demonstration board body 1. At this time, the demonstration board body 1 can be folded more quickly and conveniently when in use, reducing the space occupied for storage and use, facilitating the transfer and retrieval of the demonstration board body 1, and further improving the convenience and functionality of the demonstration board body 1.

[0035] When the demonstration board body 1 is idle, the two protective plates 31 fixedly connected to the mounting rod 33 on the surface of the demonstration board body 1 are slidably connected, so that the mounting grooves 32 opened on the protective plates 31 slide on the surface of the mounting rod 33 until the two protective plates 31 simultaneously cover the surface of the demonstration board body 1 and the two protective plates 31 are in contact with each other. Then, the two ends of the clamping plate 37 are respectively clamped into the inner wall of the fixing groove 36 on the surface of the two protective plates 31. At this time, when the demonstration board body 1 is stored idle, it can better ensure that the surface of the demonstration board body 1 is not easily contacted or collided with other objects, which would cause damage to the writing surface, thereby ensuring the normal use of the demonstration board body 1 and extending the service life of the demonstration board body 1.

Claims

1. A foldable demonstration board, comprising a demonstration board body (1), characterized in that: The surface of the demonstration board body (1) is provided with a folding device (2), the folding device (2) includes a mounting tube (21), the mounting tube (21) is fixedly connected to the surface of the demonstration board body (1), a support frame (22) is rotatably connected to the inner wall of the mounting tube (21), a fixing rod (23) is fixedly connected to one side of the inner wall of the support frame (22) that is close to each other, a screw (24) is threaded through the surface of the fixing rod (23), and an adjusting block is fixedly connected to the arc surface of the mounting tube (21). 25), the surface of the adjusting block (25) is provided with a number of evenly distributed circumferential adjusting grooves (26), the screw (24) is inserted into the inner wall of the adjusting groove (26), the inner wall of the support frame (22) is rotatably connected to one side of each other, the rotating rod (27) is fixedly connected to the arc surface of the rotating rod (27), and bolts (29) are threadedly connected to the two sides of the support frame (22), the bolts (29) abut against the arc surface of the rotating rod (27).

2. The foldable demonstration board according to claim 1, characterized in that: A connecting rope (210) is fixedly connected to the surface of the bolt (29), and the other end of the connecting rope (210) is fixedly connected to the surface of the support frame (22).

3. A foldable demonstration board according to claim 1, characterized in that: One end of the screw (24) is fixedly connected to an operating block (211), and the surface of the operating block (211) is provided with several anti-slip protrusions.

4. A foldable demonstration board according to claim 1, characterized in that: A stop block (212) is fixedly connected to the arc surface of the screw (24), and the stop block (212) is located close to the fixed rod (23) and the adjusting block (25).

5. A foldable demonstration board according to claim 1, characterized in that: One end of each of the two support legs (28) is fixedly connected to a reinforcing sleeve (213), which is a rubber sleeve.

6. A foldable demonstration board according to claim 1, characterized in that: The surface of the demonstration board body (1) is provided with a protective device (3). The protective device (3) includes two protective plates (31). One side surface of each of the two protective plates (31) is provided with an installation groove (32). An installation rod (33) is slidably connected to the inner wall of the installation groove (32). The installation rod (33) is fixedly connected to the surface of the demonstration board body (1). The cross section of the installation rod (33) is "T" shaped. The size of the installation rod (33) is compatible with that of the installation groove (32).

7. A foldable demonstration board according to claim 6, characterized in that: The surfaces of the two protective plates (31) are respectively provided with fixing grooves (36), and the inner walls of the fixing grooves (36) are fitted with clamping plates (37), the cross-section of the clamping plates (37) is "U" shaped.

8. A foldable demonstration board according to claim 6, characterized in that: Positioning grooves (34) are respectively provided on one side surface of the two protective plates (31), and positioning blocks (35) are slidably connected to the inner wall of the positioning grooves (34). The positioning blocks (35) are fixedly connected to the surface of the demonstration plate body (1).

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