Changeable display device for mathematical drawing learning and training

Abstract

The invention discloses a changeable display device for mathematical drawing learning and training, and relates to the technical field of display devices. The blackboard comprises a blackboard body, the blackboard body is slidably connected with a display main body, the blackboard body is slidably connected with a cleaning brush, the cleaning brush is in threaded connection with a reciprocating threaded rod, the reciprocating threaded rod is rotationally installed on the blackboard body, the blackboard body is provided with a dust suction opening, the dust suction opening communicates with a dust suction mechanism, and the dust suction mechanism comprises a dust suction cylinder arranged on the blackboard body; and a first one-way valve is arranged between the dust collection barrel and the dust collection opening, a sealing ring is slidably connected to the interior of the dust collection barrel, the sealing ring is in threaded connection with a threaded rod, and the threaded rod is connected with a reciprocating threaded rod through a transmission mechanism. The reciprocating threaded rod rotates to drive the cleaning brush, the transmission mechanism is in linkage with the dust suction mechanism, a negative pressure dust suction system is formed, dust generated in the wiping process is sucked in real time, and potential threats caused by dust flying to the health of teaching personnel and students are avoided.

Description

Technical Field

[0001] This invention belongs to the field of display device technology, and more specifically, it relates to a versatile display device for mathematical drawing learning and training. Background Technology

[0002] With the diversification of teaching methods, more and more mathematics teaching is beginning to adopt methods such as demonstration to assist teaching, which is conducive to students' understanding and communication. In the process of mathematics teaching, various teaching tools are needed. Teachers can effectively improve students' learning efficiency by using teaching tools to carry out teaching work. The versatile display device for mathematical drawing learning and training is a versatile and flexible teaching aid that is of great significance for improving students' interest and effectiveness in learning mathematics.

[0003] Existing multi-functional display devices for mathematical drawing learning and training tend to generate a lot of dust when wiping the blackboard. They cannot absorb floating dust or automatically clean and collect fallen dust during the wiping process. As a result, if this dust is inhaled into the body of the instructor, it can easily damage the instructor's lungs. Summary of the Invention

[0004] In view of the problems in related technologies, the present invention proposes a multi-variable display device for mathematical drawing learning and training, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention is a versatile display device for mathematical drawing learning and training, comprising a blackboard, a display body slidably connected to the blackboard, a cleaning brush slidably connected to the blackboard, a reciprocating threaded rod threadedly connected to the cleaning brush, the reciprocating threaded rod being rotatably mounted on the blackboard, a dust suction port on the blackboard, a dust suction mechanism connected to the dust suction port, the dust suction mechanism including a dust suction cylinder disposed on the blackboard, the dust suction cylinder and the dust suction port being interconnected and a first one-way valve being disposed between them, a sealing ring slidably connected inside the dust suction cylinder, a threaded rod threadedly connected to the sealing ring, the threaded rod being connected to a reciprocating threaded rod via a transmission mechanism, one end of the dust suction cylinder being connected to a conveying pipe, the other end of the conveying pipe being connected to the inside of a dust collection box, and a second one-way valve being disposed at the end of the conveying pipe near the dust suction cylinder.

[0006] Furthermore, the transmission mechanism includes a first gear mounted on a threaded rod, the first gear being connected to a second gear via a gear belt, the first gear being fixedly mounted on the threaded rod, the threaded rod being rotatably mounted on a dust collection cylinder, the second gear being rotatably mounted on a base block, and four base blocks being provided, arranged in pairs, with a reciprocating threaded rod rotatably mounted between each pair of base blocks, the second gear being fixedly mounted on one end of the reciprocating threaded rod, and a drive motor being fixedly mounted on the second gear.

[0007] Furthermore, the main display body is slidably connected to the inside of the blackboard, and several dust suction ports are provided. The dust suction cylinder and dust collection box are both movably installed on the blackboard.

[0008] Furthermore, a connecting plate is fixedly installed inside the blackboard, a connecting member is fixedly installed on the connecting plate, a connecting rod is rotatably installed on the connecting member, and a turbine is rotatably installed on the connecting member.

[0009] Furthermore, the turbine is engaged with a worm gear, the worm gear is rotatably mounted on a protruding block, the protruding block is fixedly mounted on a connecting rod, and the connecting rod is fixedly mounted with a first connecting shaft, the first connecting shaft being slidably connected inside a second connecting shaft.

[0010] Furthermore, the second connecting shaft is threaded with a bolt, which is in contact with the first connecting shaft, and a fixing plate is fixedly installed at the bottom of the second connecting shaft.

[0011] Compared with the prior art, the present invention has the following advantages: 1. The multi-functional display device for mathematical drawing learning and training proposed in this invention significantly improves the cleaning efficiency and safety of blackboard wiping through its innovative integrated wiping and dust collection design. When wiping the blackboard, the cleaning brush moves closely to the blackboard surface, effectively removing chalk marks. At the same time, the rotation of the reciprocating threaded rod not only drives the cleaning brush but also links the dust collection mechanism through the transmission mechanism to form a negative pressure dust collection system, which absorbs the dust generated during wiping in real time, avoiding the potential threat to the health of instructors and students caused by flying dust. In addition, the cooperation between the sealing ring and the threaded rod in the dust collection mechanism realizes the collection and transportation of dust, and finally stores the dust safely in the dust collection box for easy subsequent processing. The whole process requires no additional manual operation, has a high degree of automation, and greatly reduces the burden of teaching support work.

[0012] 2. The versatile display device of this invention also possesses high flexibility and adjustability, greatly enriching teaching application scenarios. Through the transmission design of worm gear and turbine, users can easily adjust the angle between the blackboard and the display subject to meet the visual display effects under different teaching needs, enhancing the interactivity of teaching and student participation. At the same time, the height adjustment function of the device can be achieved through simple bolt tightening and loosening operations, without the need for complicated tools. Users can flexibly adjust the overall height of the blackboard and the display subject according to the actual situation, ensuring that every student can clearly see the teaching content, optimizing the teaching environment and improving teaching efficiency. This versatile design not only enhances the feasibility of the device but also provides more convenient and efficient support for mathematical drawing learning and training. Of course, implementing any product of this invention does not necessarily require achieving all of the above advantages simultaneously. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the present invention; Figure 3 A schematic diagram of the back of the present invention. Figure 1 ; Figure 4 This is an enlarged view of point A in the present invention; Figure 5 A schematic diagram of the back of the present invention. Figure 2 ; Figure 6 This is an enlarged view of section B of the present invention; Figure 7 This is a schematic diagram of some parts of the present invention; Figure 8 This is a cross-sectional view of the dust collection cylinder of the present invention.

[0015] The attached diagram lists the components represented by each number as follows: 1. Blackboard; 2. Main display unit; 3. Cleaning brush; 4. Reciprocating threaded rod; 5. Dust suction port; 6. Dust suction cylinder; 7. Sealing ring; 8. Threaded rod; 9. Fixing plate; 10. Conveying pipe; 11. Dust collection box; 12. First gear; 13. Gear belt; 14. Second gear; 15. Base block; 16. Drive motor; 17. Connecting plate; 18. Connecting piece; 19. Connecting rod; 20. Turbine; 21. Worm gear; 22. Protruding block; 23. First connecting shaft; 24. Second connecting shaft; 25. Bolt. Detailed Implementation

[0016] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0017] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the 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 a limitation on the invention.

[0018] Please see Figures 1-8 As shown, this invention is a versatile display device for mathematical drawing learning and training, including a blackboard 1, a display body 2 slidably connected to the blackboard 1, a cleaning brush 3 slidably connected to the blackboard 1, a reciprocating threaded rod 4 threadedly connected to the cleaning brush 3, the reciprocating threaded rod 4 being rotatably mounted on the blackboard 1, a dust suction port 5 on the blackboard 1, the dust suction port 5 being connected to a dust suction mechanism, the dust suction mechanism including a dust suction cylinder 6 disposed on the blackboard 1, the dust suction cylinder 6 being interconnected with the dust suction port 5 and a first one-way valve being disposed between them, a sealing ring 7 being slidably connected inside the dust suction cylinder 6, a threaded rod 8 being threadedly connected to the sealing ring 7, the threaded rod 8 being connected to the reciprocating threaded rod 4 through a transmission mechanism, one end of a conveying pipe 10 being connected to the dust collection box 11, and a second one-way valve being disposed at the end of the conveying pipe 10 near the dust suction cylinder 6.

[0019] The working principle of the multi-variable display device for mathematical drawing learning and training proposed in this invention is as follows: when it is necessary to wipe the blackboard 1, the reciprocating threaded rod 4 is rotated to drive the cleaning brush 3 to move. Since the cleaning brush 3 is in close contact with the blackboard 1, the surface of the blackboard 1 can be wiped.

[0020] It is worth noting that when the reciprocating threaded rod 4 rotates, it synchronously drives the transmission mechanism to move, thereby driving the threaded rod 8 to rotate, which in turn drives the sealing ring 7 to move along the inside of the dust collection cylinder 6, thus creating a negative pressure inside the dust collection cylinder 6. At this time, the first one-way valve opens and the second one-way valve closes, thereby sucking the dust into the inside of the dust collection cylinder 6 through the suction port 5.

[0021] Furthermore, by reversing the reciprocating threaded rod 4, the transmission mechanism is driven to move, which in turn drives the threaded rod 8 to rotate in the opposite direction. This causes the sealing ring 7 to move along the inside of the dust collection cylinder 6. At this time, the first one-way valve is closed and the second one-way valve is opened. The sealing ring 7 is used to squeeze the dust in the dust collection cylinder 6 and transfer the dust to the inside of the dust collection box 11 through the conveying pipe 10. This prevents a large amount of dust from being generated when wiping the blackboard. If this dust is inhaled into the body of the instructor, it can easily cause lung damage to the instructor.

[0022] In one embodiment, the transmission mechanism includes a first gear 12 mounted on a threaded rod 8. The first gear 12 is connected to a second gear 14 via a gear belt 13. The first gear 12 is fixedly mounted on the threaded rod 8, which is rotatably mounted on a dust collection cylinder 6. The second gear 14 is rotatably mounted on a base block 15. There are four base blocks 15, arranged in pairs. A reciprocating threaded rod 4 is rotatably mounted between each pair of base blocks 15. The second gear 14 is fixedly mounted on one end of the reciprocating threaded rod 4, and a drive motor 16 is fixedly mounted on the second gear 14.

[0023] The working principle of the multi-variable display device for mathematical drawing learning and training proposed in this invention is as follows: by starting the drive motor 16, the second gear 14 is driven to rotate, which in turn drives the first gear 12 to rotate through the gear belt 13, thereby driving the threaded rod 8 to rotate.

[0024] It is worth noting that while the second gear 14 is rotating, it simultaneously drives the reciprocating threaded rod 4 to rotate.

[0025] In one embodiment, the display body 2 is slidably connected to the inside of the blackboard 1, and several dust suction ports 5 are provided. The dust suction cylinder 6 and the dust collection box 11 are both movably installed on the blackboard 1.

[0026] The working principle of the multi-variable display device for mathematical drawing learning and training proposed in this invention is that when it is necessary to show students PPTs or other similar content, the teacher can simply pull the display body 2 towards the blackboard 1.

[0027] In one embodiment, for the blackboard 1 described above, a connecting plate 17 is fixedly installed inside the blackboard 1, a connector 18 is fixedly installed on the connecting plate 17, a connecting rod 19 is rotatably installed on the connector 18, and a turbine 20 is rotatably installed on the connector 18.

[0028] In one embodiment, the turbine 20 is meshed with a worm gear 21, which is rotatably mounted on a protruding block 22. The protruding block 22 is fixedly mounted on a connecting rod 19, and a first connecting shaft 23 is fixedly mounted on the connecting rod 19. The first connecting shaft 23 is slidably connected inside a second connecting shaft 24.

[0029] The working principle of the multi-variable display device for mathematical drawing learning and training proposed in this invention is as follows: when it is necessary to adjust the angle of the blackboard 1 and the display body 2, the teacher only needs to rotate the worm gear 21, which drives the turbine 20 to rotate, thereby driving the connecting piece 18 to rotate, which in turn drives the connecting plate 17 to rotate, and then drives the blackboard 1 and the display body 2 to rotate, thereby realizing the angle adjustment and facilitating teaching assignments.

[0030] In one embodiment, the second connecting shaft 24 is threadedly connected with a bolt 25, the bolt 25 is in contact with the first connecting shaft 23, and a fixing plate 9 is fixedly installed at the bottom of the second connecting shaft 24.

[0031] The working principle of the multi-functional display device for mathematical drawing learning and training proposed in this invention is as follows: when it is necessary to adjust the overall height of the blackboard 1 and the display body 2, simply rotate the bolt 25 in the reverse direction to release the tight fit with the first connecting shaft 23. At this time, the first connecting shaft 23 can be moved up and down. After it has been moved to the appropriate position, rotate the bolt 25 in the forward direction to make it fit tightly with the first connecting shaft 23, thereby fixing it in place. This completes the height adjustment of the blackboard 1 and the display body 2, making it more flexible to use.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of the 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. The embodiments selected and specifically described in this specification are intended 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 versatile display device for mathematical drawing learning and training, comprising a blackboard (1), characterized in that: The blackboard (1) is slidably connected to the display body (2), the blackboard (1) is slidably connected to the cleaning brush (3), the cleaning brush (3) is threadedly connected to the reciprocating threaded rod (4), the reciprocating threaded rod (4) is rotatably mounted on the blackboard (1), the blackboard (1) is provided with a dust suction port (5), the dust suction port (5) is connected to a dust suction mechanism, the dust suction mechanism includes a dust suction cylinder (6) set on the blackboard (1), the dust suction cylinder (6) is connected to the dust suction port (5) and a first one-way valve is provided between them, a sealing ring (7) is slidably connected inside the dust suction cylinder (6), the sealing ring (7) is threadedly connected to a threaded rod (8), the threaded rod (8) is connected to the reciprocating threaded rod (4) through a transmission mechanism, one end of the dust suction cylinder (6) is connected to the conveying pipe (10), the other end of the conveying pipe (10) is connected to the inside of the dust collection box (11), and a second one-way valve is provided at the end of the conveying pipe (10) near the dust suction cylinder (6); By rotating the reciprocating threaded rod (4), the cleaning brush (3) is driven to move close to the surface of the blackboard (1) to achieve the wiping effect. At the same time, the transmission mechanism is driven to rotate the threaded rod (8), which drives the sealing ring (7) to move inside the dust collection tube (6), so that a negative pressure is formed inside the dust collection tube (6). By opening the first one-way valve and closing the second one-way valve, the dust is sucked into the dust collection tube (6) by the dust inlet (5). By rotating the reciprocating threaded rod (4) in the opposite direction, the transmission mechanism moves in the opposite direction, the threaded rod (8) rotates in the opposite direction, and the sealing ring (7) squeezes the dust inside the dust collection tube (6). At this time, the first one-way valve is closed and the second one-way valve is opened. The dust is pushed by the sealing ring (7) and enters the dust collection box (11) through the conveying pipe (10).

2. The multi-variable display device for mathematical drawing learning and training according to claim 1, characterized in that, The transmission mechanism includes a first gear (12) mounted on a threaded rod (8), the first gear (12) being connected to a second gear (14) via a gear belt (13), the first gear (12) being fixedly mounted on the threaded rod (8), the threaded rod (8) being rotatably mounted on a dust collection cylinder (6), the second gear (14) being rotatably mounted on a base block (15), the base block (15) being provided in four groups of two, and a reciprocating threaded rod (4) being rotatably mounted between each group of two base blocks (15), the second gear (14) being fixedly mounted on one end of the reciprocating threaded rod (4), and a drive motor (16) being fixedly mounted on the second gear (14).

3. The multi-variable display device for mathematical drawing learning and training according to claim 2, characterized in that, The main display body (2) is slidably connected to the inside of the blackboard (1), and there are several dust suction ports (5). The dust suction tube (6) and the dust collection box (11) are both movably installed on the blackboard (1).

4. The multi-variable display device for mathematical drawing learning and training according to claim 3, characterized in that, A connecting plate (17) is fixedly installed inside the blackboard (1), a connector (18) is fixedly installed on the connecting plate (17), a connecting rod (19) is rotatably installed on the connector (18), and a turbine (20) is rotatably installed on the connector (18).

5. The multi-variable display device for mathematical drawing learning and training according to claim 4, characterized in that, The turbine (20) is engaged with a worm (21), the worm (21) is rotatably mounted on a protruding block (22), the protruding block (22) is fixedly mounted on a connecting rod (19), the connecting rod (19) is fixedly mounted with a first connecting shaft (23), and the first connecting shaft (23) is slidably connected inside a second connecting shaft (24).

6. The multi-variable display device for mathematical drawing learning and training according to claim 5, characterized in that, The second connecting shaft (24) is threaded with a bolt (25), which is in contact with the first connecting shaft (23). A fixing plate (9) is fixedly installed at the bottom of the second connecting shaft (24).

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