Movable informatization teaching electronic blackboard equipment

Abstract

The invention discloses movable informatization teaching electronic blackboard equipment, and relates to the technical field of teaching equipment, the movable informatization teaching electronic blackboard equipment comprises a support, an upper support plate and a lower support plate are respectively arranged on the upper and lower parts of the support, an electronic teaching blackboard is arranged in the middle of the upper support plate and the lower support plate, and a repair assembly is arranged on the front surface of the electronic teaching blackboard; through cooperation of a transparent film protection automatic rolling and replacing structure in the repairing assembly, long-acting protection of the electronic teaching blackboard screen is achieved, a transparent film can directly isolate teaching aid sliding friction, external object scratching and other external force by means of excellent elasticity and abrasion resistance, the risks of screen scratching and touch sensing layer abrasion are reduced from the source, and the service life of the electronic teaching blackboard screen is prolonged. And in cooperation with an automatic winding and replacing structure, when the problems that a film body is abraded, the light transmittance is reduced and the like occur, unlocking and limiting are conducted through a second electric push rod, a driving motor drives a winding rod to operate, film body replacement is rapidly completed, and the problem that a screen is damaged due to long-term high-frequency operation in a teaching scene is solved.

Description

Technical Field

[0001] This invention relates to the field of teaching equipment technology, specifically to a portable, information-based electronic blackboard device for teaching. Background Technology

[0002] With the deepening of the Education Informatization 2.0 Action Plan, the construction of smart campuses has become the core direction of education modernization. Mobile electronic blackboards, as the core carrier integrating traditional blackboard writing with modern multimedia teaching, are widely used in various teaching scenarios due to their advantages such as flexibility, multimodal interaction, and resource integration. They effectively break the limitations of fixed teaching spaces and adapt to diverse teaching needs such as group teaching, cross-classroom teaching, and temporary training. These devices typically integrate core components such as LCD display modules, infrared / capacitive touch modules, built-in computing units (OPS computers), mobile stands, and power supply systems, realizing multi-functional integration of chalk writing, touch operation, multimedia playback, and network interaction, significantly improving the vividness and efficiency of teaching.

[0003] However, some problems exist in actual teaching applications:

[0004] Firstly, electronic teaching blackboards are frequently used in teaching scenarios, and the classroom environment is complex, so they are inevitably subject to impacts from external objects during use. This can easily lead to screen panel breakage, liquid crystal leakage, or loose internal wiring causing display failures, and in severe cases, directly rendering the equipment unusable.

[0005] Secondly, when teachers operate electronic teaching blackboards, they often need to use tools to slide on the screen surface. Long-term friction and contact can easily cause scratches on the screen and wear on the touch sensing layer, which in turn can lead to problems such as decreased touch sensitivity and partial touch failure.

[0006] Therefore, it is necessary to invent a portable, information-based electronic blackboard device to solve the above problems. Summary of the Invention

[0007] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a portable electronic blackboard device for information-based teaching, solving the problems of easily scratched electronic teaching blackboard screens and lack of protection.

[0008] Technical solution To achieve the above objectives, the present invention is implemented through the following technical solution: a portable information-based teaching electronic blackboard device, including a support frame, an upper support plate and a lower support plate respectively provided on the upper and lower parts of the support frame, an electronic teaching blackboard provided in the middle of the upper and lower support plates, a repair component provided on the front of the electronic teaching blackboard, and a pressure-resistant component provided on the back of the electronic teaching blackboard. The repair component includes a second support block, with a first winding rod movably passing through both ends of the second support block. A fourth support block is provided at the bottom of the second support block, and a second limiting plate inclined upward is provided at the end of the fourth support block. A transparent film that adheres to the surface of the electronic teaching blackboard is wound around the first winding rod, and the transparent film is slidably connected to the upper surface of the second limiting plate. The repair component also includes a fourth support plate. The bottom ends of the fourth support plate are symmetrically provided with first electric push rods. One end of the first electric push rod is provided with a first side plate. The lower sides of the two first side plates are movably connected with second winding rods. The second winding rods are wound around the other end of the transparent film. One side of the two first side plates is symmetrically fixedly connected with two second side plates that are movably connected. The two second side plates are fixedly connected with clamping plates. The transparent film wound by the first and second winding rods forms a movable protective layer on the front of the electronic teaching blackboard. Under the action of the limiting plate, the transparent film can adhere to the surface of the electronic teaching blackboard. The first electric push rod drives the first side plate to move, thereby driving the second winding rod, the second side plate, and the clamping plate to move, thus tightening the transparent film and forming protection on both sides of the transparent film.

[0009] A fourth compression spring is sleeved on the outer peripheral surface of the first limiting rod, and the two ends of the fourth compression spring abut against the disc at the end of the first limiting rod and one side of the second side plate, respectively.

[0010] Both ends of the upper support plate and the lower support plate are provided with blackboards, and the top ends of the blackboards are provided with pulleys. The transparent film is made of TPU elastic protective film.

[0011] A gear is provided at one end of the first winding rod, and the gear meshes with a positioning block. First limiting blocks are symmetrically arranged at both ends of the second support block. A connecting rod movably passes through each of the first limiting blocks. One end of the connecting rod is fixedly connected to one side of the positioning block, and the other end of the connecting rod is fixedly connected to a second horizontal plate. A third compression spring is sleeved on the outer circumferential surface of the connecting rod, and both ends of the third compression spring abut against one side of the positioning block and one side of the first limiting block, respectively. A second limiting block is fixedly connected to the middle of the side of the second horizontal plate, and a limiting groove is formed on one side of the second limiting block. A third support block is fixedly connected to the lower middle of one side of the second support block. A second electric push rod is fixedly connected to the top of the third support block. A first pressing block is provided at the telescopic end of the second electric push rod. The first pressing block is slidably connected to the inclined surface of the limiting groove. Second vertical plates are symmetrically fixedly connected to one side of the second support block, and the other ends of the two second vertical plates are fixedly connected to one side of a fourth support plate. A first horizontal plate is fixedly connected to the middle of the second vertical plates.

[0012] Vertical grooves are provided at both ends of the fourth support plate and on the side of the first side plate. A first base plate is inserted into the groove. A pressure strip is fixedly connected to the top of the first base plate. The bottom surface of the pressure strip is arc-shaped and slidably connected to the surface of the transparent film. A circular plate is provided in the lower center of the first base plate below the fourth support plate. A threaded rod is threadedly connected to the circular plate. By rotating the threaded rod, the circular plate, the first base plate, and the pressure strip are moved downward to squeeze one side of the transparent film, thereby achieving the effect of tightening the transparent film again.

[0013] The top of both the upper and lower support plates is provided with a sliding groove. A first support block and a first limiting plate are symmetrically arranged on one side of the upper support plate and one side of the lower support plate. An inclined groove is provided at equal intervals at the bottom of the first limiting plate. A rectangular hole is provided on the surface of both the first support block and the first limiting plate. A first vertical plate is slidably connected in the rectangular hole. A top plate is fixedly connected to the top of the first vertical plate. Support wheels are provided at the four corners of the bottom of the top plate.

[0014] The upper surface of the first support block of the support wheel is slidably connected. A second base plate is provided at the other end of the first vertical plate. A first support column is movably passed through the second base plate. A pressure plate is fixedly connected to the top of the first support column. The upper surface of the pressure plate is slidably connected to the bottom surface of the first limiting plate. A connecting plate is fixedly connected to the other end of the first support column. A first compression spring is sleeved on the outer circumferential surface of the first support column. The two ends of the first compression spring abut against the lower bottom surface of the pressure plate and the top surface of the second base plate, respectively. A handle is provided in the middle of the connecting plate. By pressing down the handle, the connecting plate, the first support column, and the pressure plate are moved downward, thereby squeezing the first compression spring. Then, the handle is pulled horizontally, so that the pressure plate abuts against the inclined groove at the bottom of the first limiting plate, thereby adjusting the tilt angle of the first vertical plate.

[0015] The pressure-resistant component includes a first horizontal plate, the two sides of which are fixedly connected to the sides of a first vertical plate. A limiting hole is formed in the middle of one side of the first horizontal plate. A second limiting rod is movably passed through the middle of one side of the first horizontal plate. A connecting block is fixedly connected to one end of the second limiting rod. A second pressing block is fixedly connected to the bottom of the connecting block. The second pressing block movably passes through the limiting hole. The side of the second pressing block is arc-shaped. An installation groove for assembling an electronic teaching blackboard is formed on one side of the second pressing block.

[0016] A fixing block is symmetrically fixed to one side of the first horizontal plate. A horizontal bar is movably passed through the two fixing blocks. Limiting rings are provided on the outer peripheral surfaces of the two horizontal bars. One end of the two limiting rings is spherical and abuts against the side surface of the second pressing block. A second compression spring is sleeved on the outer peripheral surface of the horizontal bar. The two ends of the second compression spring abut against one side of the limiting ring and one side of the fixing block, respectively.

[0017] A drive motor is fixedly installed on the other side of the first horizontal plate. The output end of the drive motor is provided with a belt, and the output end of the drive motor is connected to the end of the second winding rod through the belt.

[0018] Beneficial effects The present invention has the following beneficial effects: 1. Through the synergy of a transparent film protection and automatic rewinding replacement structure, comprehensive and long-lasting protection is achieved for the electronic teaching blackboard screen. The transparent film, with its excellent elasticity and wear resistance, can directly isolate the screen from the direct impact of external forces such as sliding friction of teaching aids and scratches from foreign objects. At the same time, it prevents chalk dust adhesion and wear, reducing the risk of screen scratches and wear on the touch sensing layer from the source. With the automatic rewinding replacement structure, when the film is worn or the light transmittance decreases, the second electric push rod can be used to unlock the limit and drive the motor to drive the rewinding rod to quickly complete the film replacement. After replacement, the pressure strip can be used to tighten the film again to ensure that it fits tightly to the screen, always ensuring touch sensitivity and display effect, solving the problem of screen damage caused by long-term high-frequency operation in teaching scenarios.

[0019] 2. By cooperating with the second compression block, the second compression spring, and the limiting ring in the anti-pressure assembly, the front impact resistance of the electronic teaching blackboard is improved. When the front of the device is hit by an external object, the impact force is transmitted to the anti-pressure assembly. The arc structure of the second compression block will squeeze the limiting rings on both sides, push the crossbar to compress the second compression spring, and fully absorb the impact energy by utilizing the elastic deformation of the spring. This prevents the impact force from being directly transmitted to the screen panel and internal components, effectively preventing screen breakage, liquid crystal leakage, loose ribbon cables, and other malfunctions. It also reduces the probability of equipment damage caused by impact and ensures the continuity of teaching activities.

[0020] 3. By pressing down on the handle, the pressure plate is disengaged from the inclined groove of the limiting plate. The angle is adjusted by sliding the first vertical plate. The support wheel can convert sliding friction into rolling friction, reducing adjustment resistance. After adjustment, the compression spring rebounds and pushes the pressure plate into the corresponding inclined groove. At the same time, one side of the support wheel tilts up to achieve a stable lock, thus adapting to the viewing needs of teaching scenarios. Combined with the mobility of the equipment itself, it enhances the teaching experience.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the tilt angle of the transparent film of the present invention; Figure 3 This is a schematic diagram of the closed blackboard structure of the present invention; Figure 4 This is a schematic diagram of the overall front structure of the present invention; Figure 5 This is a schematic diagram of the structure of the blackboard of the present invention; Figure 6 This is a schematic diagram of the back of the anti-compression component of the present invention; Figure 7 This is an enlarged schematic diagram of part A of the present invention; Figure 8 This is a schematic diagram of the overall rear structure of the present invention; Figure 9 This is an enlarged schematic diagram of structure B of the present invention; Figure 10 This is a schematic diagram of the repair component of the present invention; Figure 11 This is a partial structural schematic diagram of the repair component of the present invention; Figure 12 This is a schematic diagram of the structure of the second limiting plate of the present invention; Figure 13 This is a schematic diagram of the repair component of the present invention; Figure 14 This is an enlarged structural diagram of the left side at point C of the present invention; Figure 15 This is an enlarged structural diagram of the right side at point C of the present invention; Figure 16 This is a schematic diagram of the bottom structure of the repair component of the present invention.

[0023] In the diagram: 1. Bracket; 2. Upper support plate; 201. First support block; 3. Lower support plate; 301. First limiting plate; 4. Black board; 401. Pulley; 5. First vertical plate; 501. Top plate; 502. Support wheel; 503. Second bottom plate; 504. First support column; 505. Pressure plate; 506. First compression spring; 507. Connecting plate; 508. Handle; 6. First horizontal plate; 601. Limiting hole; 7. Second limiting rod; 8. Connecting block; 9. Second pressing block; 10. Fixing block; 11. Horizontal bar; 12. Limiting ring; 13. Second compression spring; 14. Second vertical plate; 15. Second support block; 1501. First limiting block; 1502. Fourth support block; 1503. Second limiting plate; 16. First winding rod; 1601. Transparent film; 17. Gear; 18. Positioning block; 19. Connecting rod; 1901. Third compression spring; 20. Second horizontal plate; 21. Second limiting block; 2101. Limiting groove; 22. Third support block; 23. Second electric push rod; 24. First extrusion block; 25. Fourth support plate; 2501. First electric push rod; 26. First side plate; 2601. First limiting rod; 2602. Fourth compression spring; 27. Second side plate; 28. Clamping plate; 29. ​​Second winding rod; 30. Belt; 31. Drive motor; 32. Pressure bar; 33. First base plate; 34. Round plate; 35. Threaded rod. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0026] Please see Figures 1-16 This invention provides a technical solution: a portable electronic blackboard device for information-based teaching, including a support 1. An upper support plate 2 and a lower support plate 3 are respectively arranged above and below the support 1. The upper support plate 2 and the lower support plate 3 form a stable support and fixing structure for the electronic blackboard, ensuring the overall structural strength of the device. The electronic blackboard is arranged in the middle of the upper support plate 2 and the lower support plate 3. A repair component is arranged on the front of the electronic blackboard, which can protect the surface of the electronic blackboard and adjust the tension of the transparent film 1601 to prevent damage to the screen from external objects. A pressure-resistant component is arranged on the back of the electronic blackboard, which can buffer the impact of external forces during device movement or use, preventing damage to the electronic blackboard due to impact.

[0027] It should be noted that the electronic teaching blackboard is an existing device, specifically the Seewo interactive smart flat panel.

[0028] The repair component includes a second support block 15, with a first winding rod 16 movably passing through both ends of the second support block 15. The first winding rod 16 can be used to store the initial end of the transparent film 1601, providing a support carrier for the unfolding and winding of the transparent film 1601. A fourth support block 1502 is provided at the bottom of the second support block 15, and a second limiting plate 1503 inclined upward is provided at the end of the fourth support block 1502. The inclined structure of the second limiting plate 1503 can guide the transparent film 1601, ensuring that the transparent film 1601 can be tightly attached to the surface of the electronic teaching blackboard and avoid wrinkles. The first winding rod 16 is wound with the transparent film 1601 attached to the surface of the electronic teaching blackboard. The transparent film 1601 can directly isolate external friction and play a protective role for the screen of the electronic teaching blackboard. The transparent film 1601 is slidably connected to the upper surface of the second limiting plate 1503. The repair assembly also includes a fourth support plate 25. First electric push rods 2501 are symmetrically arranged at both ends of the bottom of the fourth support plate 25. The first electric push rods 2501 provide linear drive power to achieve precise adjustment of the position of the first side plate 26. One end of each first electric push rod 2501 is connected to a first side plate 26. Second winding rods 29 are movably inserted through the lower sides of both first side plates 26. The second winding rods 29 can wind up the end of the transparent film 1601, cooperating with the first winding rods 16 to achieve the movement of the transparent film 1601. The second winding rod 29 is wound around the other end of the transparent film 1601. The first limiting rod 2601 is symmetrically fixedly connected to one side of the two first side plates 26. The first limiting rod 2601 can guide and limit the movement of the second side plate 27 to ensure the stability of its movement trajectory. The two first limiting rods 2601 are movably passed through the second side plate 27. The two second side plates 27 are fixedly connected to the clamping plate 28. The clamping plate 28 can form a clamping protection on both sides of the transparent film 1601 to prevent the edge of the transparent film 1601 from lifting or shifting. It should be noted that the height of the clamp 28 is the same as the height of the electronic teaching blackboard, and the inner side of the clamp 28 itself is at a right angle.

[0029] The transparent film 1601, wound by the first winding rod 16 and the second winding rod 29, forms a movable protective layer on the front of the electronic teaching blackboard. The protective area can be replaced at any time according to the wear condition of the transparent film 1601, extending the overall service life of the protective film. Under the action of the second limiting plate 1503, the transparent film 1601 can adhere to the surface of the electronic teaching blackboard, ensuring that the screen display and touch screen effect are not affected, while improving the adhesion between the protective film and the screen. The first electric push rod 2501 drives the first side plate 26 to move, thereby driving the second winding rod 29, the second side plate 27 and the clamping plate 28 to move, which can realize the tension adjustment of the transparent film 1601, avoiding the protective film from loosening and affecting the use. Thus, while tightening the transparent film 1601, protection can be formed on both sides of the transparent film 1601, further improving the stability of the protective film and preventing it from shifting during use.

[0030] A fourth compression spring 2602 is sleeved on the outer peripheral surface of the first limiting rod 2601. The two ends of the fourth compression spring 2602 abut against the disc at the end of the first limiting rod 2601 and one side of the second side plate 27, respectively. The fourth compression spring 2602 can provide elastic buffering force, so that the clamping plate 28 maintains appropriate pressure when clamping the transparent film 1601, avoiding damage to the transparent film 1601 due to excessive clamping, and also avoiding damage to the transparent film 1601 due to excessive clamping force during movement.

[0031] Blackboards 4 are provided at both ends of the upper support plate 2 and the lower support plate 3. The top of the blackboard 4 is equipped with pulleys 401. The blackboard 4 can be used as a traditional blackboard writing area, realizing the combination of multimedia teaching and traditional blackboard writing, and improving teaching flexibility. The transparent film 1601 is made of TPU elastic protective film. TPU material has good flexibility and wear resistance, and will not affect the touch sensitivity of the electronic teaching blackboard. At the same time, it can be repeatedly rolled up and is not easily damaged.

[0032] A gear 17 is provided at one end of the first winding rod 16. The gear 17 meshes with a positioning block 18. The meshing structure between the positioning block 18 and the gear 17 can limit the rotation of the first winding rod 16, preventing the transparent film 1601 from loosening when not in operation. First limiting blocks 1501 are symmetrically arranged at both ends of the second support block 15. A connecting rod 19 is movably passed through the first limiting block 1501. The first limiting block 1501 guides the movement of the connecting rod 19, ensuring its linearity. One end of the connecting rod 19 is fixedly connected to one side of the positioning block 18, and the other end of the connecting rod 19 is fixedly connected to a second horizontal plate 20. A third compression spring 1901 is sleeved on the outer circumferential surface of the connecting rod 19. The two ends of the third compression spring 1901 abut against one side of the positioning block 18 and one side of the first limiting block 1501, respectively. The third compression spring 1901 can provide elastic restoring force to ensure that the positioning block 18 and the gear 17 always remain in a meshing state, thereby improving the reliability of the limiting structure. The middle of the side of the second horizontal plate 20 is fixedly connected to... A second limiting block 21 is provided, with a limiting groove 2101 on one side. A third support block 22 is fixedly connected to the lower center of one side of a second support block 15. A second electric push rod 23 is fixedly connected to the top of the third support block 22. The second electric push rod 23 provides driving power. A first pressing block 24 is provided at the telescopic end of the second electric push rod 23. The first pressing block 24 is slidably connected to the inclined surface of the limiting groove 2101. The sliding engagement between the first pressing block 24 and the inclined surface of the limiting groove 2101 allows the second... The linear motion of the electric push rod 23 is converted into the lateral movement of the connecting rod 19, thereby unlocking the engagement of the gear 17. The first pressing block 24 is pushed to unlock the positioning block 18. The second vertical plate 14 is symmetrically fixedly connected to one side of the second support block 15. The other end of the two second vertical plates 14 is fixedly connected to one side of the fourth support plate 25. The second vertical plate 14 can provide stable support for the fourth support plate 25, ensuring the overall structural integrity of the repair component. The first horizontal plate 6 is fixedly connected to the middle of the second vertical plate 14.

[0033] Vertical grooves are provided at both ends of the fourth support plate 25 and on the side of the first side plate 26. A first base plate 33 is inserted into the groove. The groove guides the movement of the first base plate 33, ensuring its vertical lifting. A pressure strip 32 is fixedly connected to the top of the first base plate 33. The bottom surface of the pressure strip 32 is arc-shaped. The arc structure allows the pressure strip 32 to form flexible contact with the surface of the transparent film 1601, avoiding scratching the transparent film 1601. The bottom surface of the pressure strip 32 is slidably connected to the surface of the transparent film 1601. A circular plate 34 is located in the lower center of the fourth support plate 25. The circular plate 34 is threadedly connected to a threaded rod 35. By rotating the threaded rod 35, the circular plate 34, the first base plate 33, and the pressure strip 32 are moved downward. The threaded transmission structure of the threaded rod 35 can achieve precise control of the lifting distance of the pressure strip 32, thereby squeezing one side of the transparent film 1601, thus achieving the effect of tightening the transparent film 1601 again, further improving the adhesion between the transparent film 1601 and the screen, and eliminating the loosening phenomenon caused by long-term use.

[0034] Both the upper support plate 2 and the lower support plate 3 have sliding grooves at their tops, which are slidably connected to the pulleys 401, thereby improving the smoothness of the blackboard 4's movement. A first support block 201 and a first limiting plate 301 are symmetrically arranged on one side of the upper support plate 2 and one side of the lower support plate 3. The first support block 201 and the first limiting plate 301 provide a support base for the movement and positioning of the first vertical plate 5. The bottom of the first limiting plate 301 has equidistant inclined grooves, which can cooperate with the pressure plate 505 to adjust the tilt angle of the first vertical plate 5. The first support block 201 and the first limiting plate 301 are fixed, and rectangular holes are opened on their surfaces. The first vertical plate 5 is slidably connected in the rectangular holes. The rectangular holes can guide the sliding of the first vertical plate 5 and ensure its smooth movement. The top plate 501 is fixedly connected to the top of the first vertical plate 5. The four corners of the bottom of the top plate 501 are provided with support wheels 502. The support wheels 502 can convert the sliding friction between the top plate 501 and the first support block 201 into rolling friction, reduce the moving resistance, and facilitate the position adjustment of the first vertical plate 5.

[0035] The upper surface of the first support block 201 of the support wheel 502 is slidably connected. A second base plate 503 is provided at the other end of the first vertical plate 5. The second base plate 503 is movably connected through the first support column 504. The first support column 504 can support and guide the pressure plate 505 to ensure its vertical lifting. The top of the first support column 504 is fixedly connected to the pressure plate 505. The upper surface of the pressure plate 505 is slidably connected to the bottom surface of the first limiting plate 301. The pressure plate 505 can cooperate with the inclined groove at the bottom of the first limiting plate 301 to realize the positioning of the first vertical plate 5. The other end of the first support column 504 is fixedly connected to the connecting plate 507. A first compression spring 506 is sleeved on the outer peripheral surface of the first support column 504. The two ends of 6 abut against the bottom surface of the pressure plate 505 and the top surface of the second base plate 503, respectively. The first compression spring 506 provides elastic restoring force to ensure that the pressure plate 505 is tightly fitted to the bottom surface of the first limiting plate 301. A handle 508 is provided in the middle of the connecting plate 507. By pressing down on the handle 508, the connecting plate 507, the first support column 504, and the pressure plate 505 are moved downward, thereby squeezing the first compression spring 506. Then, by pulling the handle 508 horizontally, the pressure plate 505 abuts against the inclined groove at the bottom of the first limiting plate 301, thereby adjusting the tilt angle of the first vertical plate 5. By adjusting the tilt angle of the first vertical plate 5, the electronic teaching blackboard can be tilted to provide a better viewing angle. Figure 2 As shown.

[0036] The pressure-resistant component includes a first horizontal plate 6, whose two sides are fixedly connected to the sides of a first vertical plate 5. The first horizontal plate 6 serves as the mounting base for the pressure-resistant component and also transmits the supporting force of the first vertical plate 5. A limiting hole 601 is opened in the middle of one side of the first horizontal plate 6, and a second limiting rod 7 is movably passed through the middle of one side of the first horizontal plate 6. The second limiting rod 7 can guide and limit the movement of the connecting block 8, ensuring the stability of its movement trajectory. One end of the second limiting rod 7 is fixedly connected to the connecting block 8, and the bottom of the connecting block 8 is fixedly connected to the second pressing block 9. The arc-shaped structure of the second pressing block 9 can fit against the back of the electronic teaching blackboard to achieve uniform force distribution. The second pressing block 9 is movably passed through the limiting hole 601. The side of the second pressing block 9 is arc-shaped, and one side of the second pressing block 9 has an installation groove for assembling the electronic teaching blackboard. The installation groove can accurately position the back of the electronic teaching blackboard, ensuring that the protective function of the pressure-resistant component is accurately applied to the back of the screen.

[0037] It should be noted that the dimensions of the mounting slot are compatible with the dimensions of the mounting bracket on the back of the electronic teaching blackboard, and both are existing structures, so they will not be described in detail here.

[0038] One side of the first horizontal plate 6 is symmetrically fixedly connected with a fixing block 10. The two fixing blocks 10 movably pass through the horizontal bar 11. The fixing blocks 10 can support and guide the horizontal bar 11, ensuring its lateral movement stability. The outer peripheral surfaces of the two horizontal bars 11 are provided with limit rings 12. One end of the two limit rings 12 is spherical and abuts against the side surface of the second pressing block 9. The spherical structure of the limit ring 12 can form flexible contact with the arc surface of the second pressing block 9 to ensure uniform force. The outer peripheral surface of the horizontal bar 11 is fitted with a second compression spring 13. The two ends of the second compression spring 13 abut against one side of the limit ring 12 and one side of the fixing block 10, respectively. The second compression spring 13 can provide elastic buffer force. When the electronic teaching blackboard is impacted by external force, the deformation characteristics of the second compression spring 13 absorb the impact force and play a role in pressure resistance and protection.

[0039] A drive motor 31 is fixedly installed on the other side of the first horizontal plate 6. A belt 30 is provided at the output end of the drive motor 31. The output end of the drive motor 31 is connected to the end of the second winding rod 29 through the belt 30. The drive motor 31 can be driven by the belt 30 to provide stable rotation power to the second winding rod 29, realize the automatic winding and replacement of the transparent film 1601, and improve the automation level of the equipment.

[0040] It should be noted that the output end of the drive motor 31 and the end of the second winding rod 29 are both provided with pulleys for mounting the belt 30, thereby preventing the belt 30 from falling off. Since the rotational connection structure between the belt 30 and the pulley is a structural feature, it will not be described in detail here.

[0041] It should also be noted that the back of the first horizontal plate 6 also requires control equipment. The drive motor 31, the first electric push rod 2501, and the second electric push rod 23 are all connected to the control equipment by wires. The drive motor 31, the first electric push rod 2501, the second electric push rod 23, and the control equipment are all existing equipment. The specific models and control logic are all existing technologies, and will not be described in detail here.

[0042] Working principle: First, the transparent film 1601 is made of TPU elastic protective film material. During teaching use, due to frequent sliding friction of teaching aids by teachers and students, scratches from foreign objects, or long-term wear from chalk dust, surface scratches and reduced light transmittance may occur. Simultaneously, the film is prone to loosening under long-term tension, affecting the protective effect and screen adhesion. When replacement is needed, the second electric push rod 23 and the first electric push rod 2501 are activated, pushing the first pressing block 24 to slide along the inclined surface of the limiting groove 2101 of the second limiting block 21. This causes the second horizontal plate 20 and connecting rod 19 to move laterally, compressing the third compression spring 1901. This disengages the positioning block 18 from the gear 17 at the end of the first winding rod 16, releasing the rotation limit of the first winding rod 16. Simultaneously, the first electric push rod 2501 is activated to retract, moving the first side plate 26, which in turn moves the second winding rod 29, the second side plate 27, and the clamping plate 28, thus releasing the transparent film 1601. Subsequently, the drive motor 31 starts, drives the pulley to rotate through the transmission belt 30, and then drives the second winding rod 29 to rotate, winding the damaged transparent film 1601 onto the second winding rod 29. After the new transparent film 1601 area completely covers the surface of the electronic teaching blackboard, the second electric push rod 23 resets, the third compression spring 1901 rebounds and pushes the positioning block 18 to re-engage with the gear 17, locking the first winding rod 16. Then the first electric push rod 2501 unfolds to drive the first side plate 26 to move, thereby driving the second winding rod 29, the second side plate 27 and the clamping plate 28 to move, so as to achieve tensioning of the transparent film 1601. When the transparent film 1601 becomes loose during subsequent use, the circular plate 34 and the first base plate 33 are moved downward by manually rotating the threaded rod 35. The pressure strip 32 then squeezes the surface of the transparent film 1601 to achieve secondary tensioning of the film, ensuring that the transparent film 1601 fits tightly to the screen and ensuring the best performance.

[0043] When the front of the electronic teaching blackboard is impacted, the impact force is transmitted to the second pressing block 9, which pushes the connecting block 8 to move laterally along the second limiting rod 7. The arc structure on the side of the second pressing block 9 presses the limiting rings 12 on both sides, causing the crossbar 11 to move towards the fixed block 10 and compress the second compression spring 13. The second compression spring 13 absorbs most of the impact energy through its own elastic deformation, preventing the impact force from acting directly on the front of the electronic teaching blackboard and preventing the screen from breaking or the internal components from being damaged. At the same time, the transparent film 1601 can also play a role in dispersing the impact force. When the electronic teaching blackboard needs to be adjusted, by pressing down on the handle 508, the connecting plate 507 and the first support column 504 move downwards, squeezing the first compression spring 506, causing the pressure plate 505 to disengage from the bottom surface of the first limiting plate 301. Then, by pulling the handle 508 horizontally, the first vertical plate 5 slides along the rectangular hole of the first support block 201 and the first limiting plate 301. The support wheel 502 at the bottom of the top plate 501 converts sliding friction into rolling friction, reducing movement resistance. When the electronic teaching blackboard is adjusted to the target angle, the handle 508 is released, and the first compression spring 506 rebounds, pushing the pressure plate 505 upwards, causing it to engage in the corresponding inclined groove at the bottom of the first limiting plate 301. At this time, one side of the support wheel 502 tilts up, thereby locking the position of the first vertical plate 5, thus completing the angle adjustment of the electronic teaching blackboard and providing a better viewing angle.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A portable electronic blackboard device for information-based teaching, comprising a support frame (1), characterized in that: The bracket (1) is provided with an upper support plate (2) and a lower support plate (3) respectively. An electronic teaching blackboard is provided in the middle of the upper support plate (2) and the lower support plate (3). A repair component is provided on the front of the electronic teaching blackboard and an anti-pressure component is provided on the back of the electronic teaching blackboard. The repair component includes a second support block (15), with a first winding rod (16) movably passing through both ends of the second support block (15). A fourth support block (1502) is provided at the bottom of the second support block (15), and a second limiting plate (1503) inclined upward is provided at the end of the fourth support block (1502). A transparent film (1601) is wound around the first winding rod (16) and adheres to the surface of the electronic teaching blackboard. The transparent film (1601) is slidably connected to the upper surface of the second limiting plate (1503). The repair assembly also includes a fourth support plate (25). The bottom ends of the fourth support plate (25) are symmetrically provided with first electric push rods (2501). One end of the first electric push rod (2501) is provided with a first side plate (26). The lower sides of the two first side plates (26) are movably connected with second winding rods (29). The second winding rods (29) are wound around the other end of the transparent film (1601). One side of the two first side plates (26) is symmetrically fixedly connected with (2601). The two (2601) are movably connected with second side plates (27). The two second side plates (27) are fixedly connected with clamps (28). The transparent film (1601) wound by the first winding rod (16) and the second winding rod (29) forms a movable protective layer on the front of the electronic teaching blackboard. Under the action of the limiting plate (1503), the transparent film (1601) can be attached to the surface of the electronic teaching blackboard. The first electric push rod (2501) drives the first side plate (26) to move, thereby driving the second winding rod (29), the second side plate (27) and the clamping plate (28) to move, so that while tightening the transparent film (1601), protection can be formed on both sides of the transparent film (1601).

2. The portable electronic blackboard device for information-based teaching according to claim 1, characterized in that: A fourth compression spring (2602) is sleeved on the outer peripheral surface of the first limiting rod (2601). The two ends of the fourth compression spring (2602) abut against the disc at the end of the first limiting rod (2601) and one side of the second side plate (27), respectively.

3. The portable electronic blackboard device for information-based teaching according to claim 2, characterized in that: Blackboards (4) are provided at both ends of the upper support plate (2) and the lower support plate (3). Pullers (401) are provided at both ends of the top of the blackboards (4). The transparent film (1601) is made of TPU elastic protective film.

4. The portable electronic blackboard device for information-based teaching according to claim 3, characterized in that: A gear (17) is provided at one end of the first winding rod (16), and the gear (17) is meshed with a positioning block (18). A first limiting block (1501) is symmetrically provided at both ends of the second support block (15). A connecting rod (19) is movably passed through the first limiting block (1501). One end of the connecting rod (19) is fixedly connected to one side of the positioning block (18), and the other end of the connecting rod (19) is fixedly connected to a second horizontal plate (20). A third compression spring (1901) is sleeved on the outer circumferential surface of the connecting rod (19). The two ends of the third compression spring (1901) abut against one side of the positioning block (18) and one side of the first limiting block (1501), respectively. The middle part of the side of the second horizontal plate (20) is fixed. A second limiting block (21) is fixedly connected. A limiting groove (2101) is opened on one side of the second limiting block (21). A third support block (22) is fixedly connected to the lower part of the middle side of the second support block (15). A second electric push rod (23) is fixedly connected to the top of the third support block (22). A first pressing block (24) is provided at the telescopic end of the second electric push rod (23). The first pressing block (24) is slidably connected to the inclined surface (2101) of the limiting groove. A second vertical plate (14) is symmetrically fixedly connected to one side of the second support block (15). The other end of the two second vertical plates (14) is fixedly connected to one side of the fourth support plate (25). A first horizontal plate (6) is fixedly connected to the middle of the second vertical plate (14).

5. The portable electronic blackboard device for information-based teaching according to claim 1, characterized in that: Vertical grooves are provided at both ends of the fourth support plate (25) and on the side of the first side plate (26). A first base plate (33) is inserted into the groove. A pressure strip (32) is fixedly connected to the top of the first base plate (33). The bottom surface of the pressure strip (32) is arc-shaped. The bottom surface of the pressure strip (32) is slidably connected to the surface of the transparent film (1601). A circular plate (34) is provided in the middle of the lower part of the first base plate (33) below the fourth support plate (25). The circular plate (34) is threadedly connected to a threaded rod (35). By rotating the threaded rod (35), the circular plate (34), the first base plate (33), and the pressure strip (32) are moved downward to squeeze one side of the transparent film (1601), thereby achieving the effect of tightening the transparent film (1601) again.

6. A portable electronic blackboard device for information-based teaching according to claim 2, characterized in that: The top of the upper support plate (2) and the lower support plate (3) are provided with sliding grooves. The upper support plate (2) and the lower support plate (3) are symmetrically provided with a first support block (201) and a first limiting plate (301). The bottom of the first limiting plate (301) is provided with inclined grooves at equal intervals. The surfaces of the first support block (201) and the first limiting plate (301) are provided with rectangular holes. The first vertical plate (5) is slidably connected in the rectangular holes. The top of the first vertical plate (5) is fixedly connected with a top plate (501). The bottom four corners of the top plate (501) are provided with support wheels (502).

7. The portable electronic blackboard device for information-based teaching according to claim 1, characterized in that: The upper surface of the first support block (201) of the support wheel (502) is slidably connected, and the other end of the first vertical plate (5) is provided with a second bottom plate (503). The second bottom plate (503) is movably connected through the first support column (504). The top end of the first support column (504) is fixedly connected with a pressure plate (505). The upper surface of the pressure plate (505) is slidably connected to the bottom surface of the first limiting plate (301). The other end of the first support column (504) is fixedly connected with a connecting plate (507). A first compression spring is sleeved on the outer peripheral surface of the first support column (504). 506), the two ends of the first compression spring (506) abut against the bottom surface of the pressure plate (505) and the top surface of the second base plate (503) respectively. The middle part of the connecting plate (507) is provided with a handle (508). By pressing down the handle (508), the connecting plate (507), the first support column (504) and the pressure plate (505) are driven to move downward, thereby squeezing the first compression spring (506). Then, the handle (508) is pulled horizontally, so that the pressure plate (505) abuts against the inclined groove at the bottom of the first limiting plate (301), thereby adjusting the tilt angle of the first vertical plate (5).

8. A portable electronic blackboard device for information-based teaching according to claim 2, characterized in that: The pressure-resistant component includes a first horizontal plate (6), the two sides of which are fixedly connected to the sides of the first vertical plate (5). A limiting hole (601) is opened in the middle of one side of the first horizontal plate (6). A second limiting rod (7) is movably passed through the middle of one side of the first horizontal plate (6). A connecting block (8) is fixedly connected to one end of the second limiting rod (7). A second pressing block (9) is fixedly connected to the bottom of the connecting block (8). The second pressing block (9) movably passes through the limiting hole (601). The side of the second pressing block (9) is arc-shaped. An installation groove for assembling an electronic teaching blackboard is opened on one side of the second pressing block (9).

9. A portable electronic blackboard device for information-based teaching according to claim 8, characterized in that: A fixing block (10) is symmetrically fixed to one side of the first horizontal plate (6). A horizontal bar (11) is movably passed through the two fixing blocks (10). Limiting rings (12) are provided on the outer peripheral surfaces of the two horizontal bars (11). One end of the two limiting rings (12) is spherical and abuts against the side surface of the second pressing block (9). A second compression spring (13) is sleeved on the outer peripheral surface of the horizontal bar (11). The two ends of the second compression spring (13) abut against one side of the limiting ring (12) and one side of the fixing block (10), respectively.

10. A portable electronic blackboard device for information-based teaching according to claim 8, characterized in that: A drive motor (31) is fixedly installed on the other side of the first horizontal plate (6). The output end of the drive motor (31) is provided with a belt (30). The output end of the drive motor (31) is connected to the end of the second winding rod (29) through the belt (30).

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