A multifunctional demonstration device for teaching

Abstract

The present application relates to the technical field of teaching aids, and discloses a multifunctional demonstration device for teaching, which comprises a support frame, a display screen, a writing board and a walking driving mechanism. The display screen is installed on the support frame. The writing board is movably connected with the display screen and is used for writing by teachers or students. The walking driving mechanism is drivingly connected with the writing board, so that the writing board can be switched between a first display state of being moved to the horizontal side of the display screen and a second display state of being moved below the display screen. The device can flexibly adjust the display mode of the multifunctional demonstration device for teaching, so as to improve the contrast effect of the presentation of teaching content according to real-time requirements.

Description

Technical Field

[0001] This invention relates to the field of teaching aids technology, and in particular to a multifunctional demonstration device for teaching. Background Technology

[0002] Demonstration devices are models, objects, charts, slides, etc., used in teaching to explain or illustrate something. They include teaching equipment, teaching instruments, training equipment, educational equipment, experimental equipment, teaching specimens, teaching models, etc. Demonstration devices are often used to make teaching more intuitive and efficient.

[0003] In the current teaching environment, demonstration devices commonly use electronic screens and blackboards, and the combination of electronic screens and blackboard writing is becoming increasingly common. However, the two are often separate. Although some devices have adopted a combination of sliding blackboards and electronic screens, allowing the blackboard to move relative to each other to achieve content comparison, the blackboard can only display teaching content in a specific position on the screen due to structural limitations. This makes it impossible for such devices to flexibly adjust their display method when facing different needs, thus reducing the comparative effect of the teaching content presentation. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a multifunctional teaching demonstration device that can flexibly adjust the display mode of the teaching demonstration device to improve the contrast effect of the teaching content presentation according to real-time needs.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A multifunctional demonstration device for teaching purposes, comprising:

[0007] Support frame;

[0008] A display screen, wherein the display screen is mounted on the support frame;

[0009] A writing board, which is movably connected to the display screen, is used for writing by teachers or students;

[0010] A walking drive mechanism drives a writing tablet to switch between a first display state where the writing tablet is moved to the horizontal side of the display screen and a second display state where it is moved below the display screen.

[0011] Furthermore, the display screen is equipped with a slide rail that extends downward along the horizontal edge of the display screen and then extends horizontally toward the center of the display screen; the writing board is equipped with a pulley that is slidably connected to the slide rail.

[0012] Furthermore, the walking drive mechanism includes a drive motor, a first winding roller, a guide wheel, and a first wire; the drive motor is mounted on the support frame and drives the first winding roller; the guide wheel is pivotally connected to the support frame; the winding end of the first wire is wound around the winding roller, and the pulled end of the first wire passes around the guide wheel and is connected to the writing board.

[0013] Furthermore, the writing board has a connected block and a semicircular block; the pulled end passes around the semicircular block and is connected to the connected block.

[0014] Furthermore, the walking drive mechanism also includes a second guide wire, a second winding roller, a first gear, a second gear, and a transfer gear; one end of the second guide wire is connected to the writing board, and the other end of the second guide wire is connected to the second winding roller; the second winding roller is pivotally connected to the support frame and is used to wind or unwind the second guide wire; the drive motor, the first gear, and the first winding roller are sequentially connected in a transmission connection; the second gear is connected to the second winding roller and rotates with the second winding roller; the transfer gear is pivotally connected to the support frame and meshes with the first gear and the second gear respectively.

[0015] Furthermore, the guide wheel is located at the top of the display screen, and the guide wheel, the first winding roller, the central gear, and the second winding roller are distributed sequentially along the vertical direction of the display screen.

[0016] Furthermore, the multifunctional demonstration device for teaching also includes a base and a hinge plate; one side of the base is connected to the pulley, and the other side of the base is hinged to the hinge plate; the hinge plate is driven to the writing board via a translation mechanism, so that the writing board can move closer to or further away from the hinge plate.

[0017] Furthermore, the multifunctional demonstration device for teaching also includes a main locking component and a locked component; the main locking component is disposed on one of the base and the hinge plate, and the other is provided with a locked component; the main locking component and the locked component are locked together.

[0018] Furthermore, the multifunctional demonstration device for teaching also includes a pivot plate, one side of which is connected to the translation mechanism so that the pivot plate can move closer to or away from the hinge plate; the other side of the pivot plate is pivotally connected to the writing board so that the writing board can rotate relative to the pivot plate and can follow the pivot plate to move closer to or away from the hinge plate.

[0019] Furthermore, the pivot plate is provided with a first sliding groove extending horizontally; the hinge plate is provided with a second sliding groove extending horizontally; the translation mechanism includes at least two connecting rods, at least two first sliders, and at least two second sliders; the middle portions of the two connecting rods are hinged to each other, one end of the connecting rod is hinged to the first slider, and the other end of the connecting rod is hinged to the second slider; each connecting rod, each first slider, and each second slider corresponds to each other; the first slider is slidably engaged with the first sliding groove; the second slider is slidably engaged with the second sliding groove.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. Based on the display screen mounted on the support frame, the writing board and the display screen are movably connected, and the writing board is driven by a walking drive mechanism. This allows the writing board to move to the horizontal side of the display screen in the first display state. The writing board's position is controlled by the walking drive mechanism, enabling the same device to switch between horizontal comparison mode and vertical partition mode. This eliminates the need for teachers to walk back and forth between the traditional blackboard and the electronic screen, and also eliminates the need for multiple independent display devices, optimizing the layout of the podium space and improving the flexibility of teaching presentations. Secondly, in the first display state (side comparison state), the writing board can move to the side of the display screen, allowing handwritten notes, calculation processes, or key annotations to be presented side by side with the images, text, data, etc. displayed on the screen, forming an intuitive spatial juxtaposition and creating a strong visual contrast. This helps students understand the derivation process of complex concepts, the relationship between graphics and text, or bilingual comparisons, enhancing the juxtaposition of teaching content presentation.

[0022] 2. The writing board is driven by a walking mechanism, allowing it to switch between a first display state (moving to the horizontal side of the display screen) and a second display state (moving below the display screen). In the second display state (lower position), the writing board moves below the display screen, avoiding obstruction of the main display area and ensuring the demonstration effect of videos, full-screen courseware, or software operations. Lowering the writing area below the screen reduces the overall height of the writing surface, making it easier for shorter students (especially lower-grade students) to write and perform calculations, encouraging student participation and interaction, and reflecting a humanized and inclusive design. At the same time, teachers can still use this area for auxiliary blackboard writing, achieving a clear hierarchy between the main (display screen) and secondary (writing board) content. Secondly, the switching process between the first and second display states is automated, reducing the burden on teachers to manually adjust teaching aids and classroom interruption time, making the transition between teaching segments smoother. Finally, the switching between the two states can adapt to various teaching modes such as lecturing, discussion, and collaborative practice according to real-time needs, thereby dynamically improving the comparison effect of teaching information. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a multifunctional teaching demonstration device according to the present invention;

[0024] Figure 2 for Figure 1 Another perspective view is shown, in which the writing board is in the second display state;

[0025] Figure 3 for Figure 1 Exploded view of the central hinge plate, translation mechanism, and writing board; Figure 4 for Figure 3 Another perspective view.

[0026] In the diagram: 1. Support frame; 2. Display screen; 3. Writing board; 4. Walking drive mechanism; 41. Drive motor; 42. First winding roller; 43. Guide wheel; 44. First wire; 45. Second wire; 46. Second winding roller; 47. First gear; 48. Second gear; 49. Central gear; 5. Slide rail; 6. Pulley; 7. Connected block; 8. Semicircular block; 9. Base; 10. Hinge plate; 11. Translation mechanism; 111. Connecting rod; 112. First slider; 113. Second slider; 12. Main locking element; 13. Locked element; 14. Pivot plate; 15. First slide groove; 16. Second slide groove. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] See Figures 1-4The specific implementation methods of all embodiments of the present invention are as follows:

[0031] A multifunctional demonstration device for teaching includes a support frame: 1, a display screen; 2, a writing board; and 4, a walking drive mechanism.

[0032] Support frame: 1 is the main frame of the entire device, which is usually a column-type or gantry-type structure, welded or assembled from high-strength metal profiles. Support frame: 1 may be equipped with casters with locking function at the bottom for easy movement and fixation; the top or middle may be equipped with a support structure for mounting the display screen 2 and a guide rail mechanism for guiding the movement of the writing board 3.

[0033] Display screen 2 is mounted on support frame 1. Specifically, display screen 2 is a large-size LCD display panel or interactive touch LCD screen, which is rigidly connected to support frame 1 via a mounting bracket, and is used to dynamically display electronic teaching content such as multimedia courseware, videos, pictures or software operation interfaces.

[0034] The writing board 3 is movably connected to the display screen 2, and is used for writing by teachers or students. The writing board 3 is preferably a rectangular whiteboard, with its surface made of easy-to-write and easy-to-erase enamel whiteboard or high-performance composite whiteboard material. The back of the writing board 3 is connected to the support frame 1 via a set of connecting sliders, which includes a horizontal guide rail and a vertical lifting guide rail, allowing it to slide horizontally and rise vertically within a certain range.

[0035] The walking drive mechanism 4 drives the writing tablet 3, enabling it to switch between a first display state where it moves to the horizontal side of the display screen 2 and a second display state where it moves below the display screen 2. The walking drive mechanism 4, used to drive the writing tablet 3, includes a drive motor 41, a transmission mechanism, a guide rail, and a control system. The drive motor 41 is typically a servo motor or stepper motor with a reducer, providing precise and controllable power. The transmission mechanism can use synchronous belt drive, rack and pinion drive, or ball screw drive to convert the rotational motion of the motor into linear motion of the writing tablet 3. The guide rail can be a set of linear guides precisely mounted on the support frame 1 to ensure smooth movement of the writing tablet 3. The control system is integrated inside the device or operated via an external remote control to control the movement of the drive motor 41.

[0036] The working principle of the multifunctional demonstration device for teaching according to the present invention is as follows:

[0037] When a content comparison demonstration is required, the drive mechanism moves the writing board 3 horizontally to the side of the display screen 2, so that the writing board 3 enters the first display state. At this time, the teacher can write or mark on the writing board 3, and at the same time, it is presented side by side with the images, manuscripts and other content displayed on the screen. When it is necessary to switch to the explanation mode with the display screen 2 as the main focus, or when shorter students need to write on the stage, the drive mechanism moves the writing board 3 to the bottom of the display screen 2 to enter the second display state. At the same time, students can also use the writing board 3 to supplement the blackboard writing or calculations.

[0038] Obviously, based on the fact that the display screen 2 is installed on the support frame: 1. The writing board 3 is movably connected to the display screen 2, and the walking drive mechanism 4 drives the writing board 3 to move to the horizontal side of the display screen 2 in the first display state. The position of the writing board 3 is controlled by the walking drive mechanism 4, realizing the switching between the horizontal comparison mode and the upper and lower partition mode of the same device. This eliminates the need for teachers to walk back and forth between the traditional blackboard and the electronic screen, and also eliminates the need to configure multiple independent display devices, thus optimizing the layout of the podium space and improving the flexibility of teaching presentation. Secondly, in the first display state (side comparison state), the writing board 3 can move to the side of the display screen 2, so that handwritten notes, calculation processes, or key annotations can be presented side by side with the images, text, data, etc. displayed on the screen, forming an intuitive spatial juxtaposition and creating a strong visual contrast. This helps students understand the derivation process of complex concepts, the relationship between graphics and text, or bilingual comparison, and enhances the contrast of the teaching content presentation.

[0039] The writing board 3 is driven by the walking drive mechanism 4, enabling it to switch between a first display state (moving to the horizontal side of the display screen 2) and a second display state (moving below the display screen 2). In the second display state (lower position), the writing board 3 moves below the display screen 2, avoiding obstruction of the main display area and ensuring the demonstration effect of videos, full-screen courseware, or software operations. Lowering the writing area below the screen reduces the overall height of the writing surface, allowing shorter students (especially lower-grade students) to easily write and perform calculations, encouraging student participation and interaction, and reflecting a humanized and inclusive design. At the same time, teachers can still use this area for auxiliary blackboard writing, achieving a clear hierarchy between the main (display screen 2) and secondary (writing board 3) content. Secondly, the switching process between the first and second display states is automated, reducing the burden on teachers to manually adjust teaching aids and classroom interruption time, making the transition between teaching segments smoother. Finally, the switching between the two states can adapt to various teaching modes such as lecturing, discussion, and collaborative practice according to real-time needs, thereby dynamically improving the comparison effect of teaching information.

[0040] Preferably, the display screen 2 is equipped with a slide rail 5, which extends downward along the horizontal edge of the display screen 2 and then horizontally towards the center of the display screen 2; the writing board 3 is equipped with a pulley 6, which is slidably connected to the slide rail 5. Specifically, the initial section of the slide rail 5 extends vertically downward along the side edge of the display screen 2, and then turns inward and extends horizontally towards the center of the display screen 2. The sliding connection between the pulley 6 and the slide rail 5 adopts a multi-axis linkage connection method, which enables the writing board 3 to move precisely along the path of the composite slide rail 5 under the drive of the walking drive mechanism 4. When it is necessary to switch to the first display state, the pulley 6 moves along the horizontal section of the slide rail 5 to the side locking position of the display screen 2; when it is necessary to switch to the second display state, the pulley 6 first moves downward along the vertical section of the slide rail 5 to the height of the lower edge of the display screen 2, and then moves along the horizontal section of the slide rail 5 towards the center of the display screen 2 to the preset position, realizing the coordinated displacement of the writing board 3 in the horizontal and vertical directions, which not only ensures the stability of the movement process, but also achieves precise positioning of the working position, providing a reliable mechanical basis for the state switching of the device.

[0041] Preferably, the walking drive mechanism 4 includes a drive motor 41, a first winding roller 42, a guide wheel 43, and a first guide wire 44. The drive motor 41 is mounted on the support frame 1 and drives the first winding roller 42. The guide wheel 43 is pivotally connected to the support frame 1. The take-up end of the first guide wire 44 is wound around the winding roller, and the pulled end of the first guide wire 44 passes over the guide wheel 43 and is connected to the writing board 3. Specifically, the drive motor 41 is fixedly mounted on a mounting seat on the top or side of the support frame 1, and its output shaft is directly connected to the first winding roller 42 via a coupling. The surface of the first winding roller 42 may be provided with a spiral guide groove to ensure that the first guide wire 44 can be wound in an orderly manner. The first guide wire 44 is usually made of high-strength multi-strand steel wire rope or synchronous belt. One end is the take-up end, which is firmly wound and fixed on the first winding roller 42; the other end is the pulled end, which extends downward and passes over at least one guide wheel 43 pivotally connected to the support frame 1 to change the direction of force transmission and reduce friction generated by the guide. Finally, the pulled end of the first wire 44 is reliably connected to the back frame of the writing board 3. When the drive motor 41 rotates in both directions, the first wire 44 can be wound up and down through the first winding roller 42, thereby smoothly pulling the writing board 3 to move back and forth along a preset trajectory, realizing the switching between two display states.

[0042] Preferably, the writing board 3 has a connecting block 7 and a semicircular block 8; the pulled end passes around the semicircular block 8 and is connected to the connecting block 7. Specifically, the connecting block 7 is fixed to the back frame of the writing board 3, and has a sturdy connecting hole in its center, while the semicircular block 8 is a fixed pulley 6 or guide post with a smooth arc-shaped outer surface, which can be pivotally connected to the back of the writing board 3 near the top via a bearing. When the pulled end of the first wire 44 is led out from the guide wheel 43, it is not directly connected to the connecting block 7, but first bends at a certain angle to fit around the smooth arc surface of the semicircular block 8, and finally is fixedly connected to the connecting hole of the connecting block 7. This allows the direction of the traction force to be locally optimized and adjusted before it finally acts on the writing board 3, converting any possible lateral component force into a guiding force that is more conducive to smooth movement. At the same time, the rolling or sliding contact of the semicircular block 8 can reduce friction and wear, ensuring the smoothness and precision of the traction action and extending the service life of the wire.

[0043] Preferably, the walking drive mechanism 4 further includes a second guide wire 45, a second winding roller 46, a first gear 47, a second gear 48, and a rotating gear 49; one end of the second guide wire 45 is connected to the writing board 3, and the other end of the second guide wire 45 is connected to the second winding roller 46; the second winding roller 46 is pivotally connected to the support frame 1 and is used to wind or unwind the second guide wire 45; the drive motor 41, the first gear 47, and the first winding roller 42 are sequentially connected in a transmission manner; the second gear 48 is connected to the second winding roller 46 and rotates with the second winding roller 46; the rotating gear 49 is pivotally connected to the support frame 1 and meshes with the first gear 47 and the second gear 48 respectively. Specifically, the output shaft of the drive motor 41 (a motor with forward and reverse rotation functions) is sequentially connected to the first gear 47 and the first winding roller 42 to form the main drive end. The second winding roller 46 is pivotally connected to the corresponding position of the support frame 1 via a bearing, and the second gear 48 is connected to its shaft. A central gear 49, independently pivoted to the support frame 1, simultaneously meshes with both the first gear 47 and the second gear 48. The winding end of the first guide wire 44 is fixed to the first winding roller 42, and the pulled end, after passing over the guide wheel 43 and the semicircular block 8 as described above, connects to the writing board 3. One end of the second guide wire 45 is directly or through a similar structure connected to the other side or a symmetrical point of the writing board 3, while the other end is wound and fixed to the second winding roller 46. When the drive motor 41 starts, power is transmitted to the second gear 48 through the first gear 47 and the central gear 49, driving the first winding roller 42 and the second winding roller 46 to rotate strictly synchronously but in opposite directions. That is, when the first winding roller 42 winds up the first guide wire 44, the second winding roller 46 simultaneously releases the second guide wire 45 of equal length, and vice versa. This ensures that the writing board 3 is subjected to uniform force and synchronized speed at both ends during movement, avoiding jamming, tilting, or shaking that may occur due to unilateral traction, and improving the stability and reliability of the entire device.

[0044] Preferably, the guide wheel 43 is located at the top of the display screen 2, and the guide wheel 43, the first winding roller 42, the intermediate gear 49, and the second winding roller 46 are distributed sequentially along the vertical direction of the display screen 2. Specifically, the guide wheel 43 is pivotally mounted on the support frame 1 directly above the top of the display screen 2, and its position ensures that the first wire 44 can pull the writing board 3 downward in a near-vertical direction. Below it, the first winding roller 42 is coaxially mounted with the drive motor 41 and the first gear 47, forming a drive assembly. Continuing downward in the vertical direction, the intermediate gear 49 is independently pivotally mounted on the middle partition of the support frame 1, and its meshing position precisely matches the transmission requirements of the first gear 47 and the second gear 48. At the bottom, the second winding roller 46 and the second gear 48 connected to it are installed. This vertical distribution along the display screen 2 from top to bottom not only makes full use of the internal longitudinal space of the support frame 1, making the structure extremely compact, but also ensures that the lead-out paths of the first wire 44 and the second wire 45 are as straight as possible, minimizing the additional friction and energy loss caused by path bending and excessive angle, while making the force direction of each transmission component more reasonable, ensuring the smooth operation of the entire drive system.

[0045] Preferably, a multifunctional demonstration device for teaching further includes a base 9 and a hinge plate 10; one side of the base 9 is connected to a pulley 6, and the other side of the base 9 is hinged to the hinge plate 10; the hinge plate 10 is driven to connect to the writing board 3 via a translation mechanism 11, so that the writing board 3 can move closer to or further away from the hinge plate 10. Specifically, one side of the base 9 is connected to the pulley 6, allowing it to move smoothly along the slide rail 5; the other side of the base 9 is hinged to the hinge plate 10 via a hinge or pivot, allowing the hinge plate 10 to rotate relative to the base 9 within a certain angle range. The translation mechanism 11 (such as an electric push rod, a lead screw and nut pair, or a gear and rack mechanism, etc.) is installed between the hinge plate 10 and the writing board 3, with one end fixed to the hinge plate 10 and the other end driving and connecting to the writing board 3, thereby pushing the writing board 3 to make linear reciprocating motion relative to the hinge plate 10, realizing the adjustment of moving closer to or further away from the hinge plate 10. When the writing board 3 needs to be on the same display plane as the display screen 2, the writing board 3 can be pushed outward by the translation mechanism 11 to align its surface with the plane of the display screen 2, eliminating height differences and obstruction of vision. When it is not in use or needs to be stored, the writing board 3 can be folded inward by the translation mechanism 11 until it is close to the hinge plate 10. Then, the entire writing board 3 assembly can be folded and stored in the space behind the display screen 2 by rotating the hinge plate 10. This not only ensures that the writing board 3 can form a seamless visual plane with the display screen 2 when it is working, optimizing the comparison display effect, but also achieves compact folding of the device when not in use, reducing space occupation and improving the practicality and environmental adaptability of the device.

[0046] Preferably, a multifunctional demonstration device for teaching further includes a main locking member 12 and a locked member 13; the main locking member 12 is disposed on one of the base 9 and the hinge plate 10, and the other is provided with the locked member 13; the main locking member 12 and the locked member 13 are locked together. Specifically, in order to ensure the structural rigidity and stability of the writing board 3 in the unfolded working state, this device adds a mechanism between the base 9 and the hinge plate 10, including a main locking member 12 (e.g., a locking pin with a handle, an electromagnetic pin, or an eccentric cam lock) disposed on the base 9 and a locked member 13 (e.g., a pin hole, a locking groove, or a locking protrusion) disposed at the corresponding position on the hinge plate 10. When the writing board 3 is pushed to the target position by the translation mechanism 11, and the hinge plate 10 rotates to a predetermined angle with the base 9 (usually 90 degrees, so that the writing board 3 is in a vertical working posture), the main locking member 12 can be driven manually or electrically to insert, engage, or press the locked member 13, thereby completely locking the relative rotation between the hinge plate 10 and the base 9. This eliminates the wobbling or swinging that may occur when the hinge joint is subjected to writing force or when the device moves, ensuring the stability of the writing board 3 in the working state. When it needs to be folded for storage, simply release the lock to restore the rotational freedom of the hinge plate 10.

[0047] Preferably, a multifunctional demonstration device for teaching further includes a pivot plate 14. One side of the pivot plate 14 is connected to a translation mechanism 11, allowing the pivot plate 14 to move closer to or further away from the hinge plate 10. The other side of the pivot plate 14 is pivotally connected to a writing board 3, allowing the writing board 3 to rotate relative to the pivot plate 14 and to move closer to or further away from the hinge plate 10 following the pivot plate 14. Specifically, one side of the pivot plate 14 is fixedly connected to the drive end (such as the telescopic end of a push rod) of the translation mechanism 11, thereby allowing it to move closer to or further away from the hinge plate 10 as a whole, following the movement of the translation mechanism 11, thus achieving horizontal position adjustment of the writing board 3. Simultaneously, the other side of the pivot plate 14 is pivotally connected to the back frame of the writing board 3 via a pivot or rotating shaft assembly, allowing the writing board 3 to rotate relative to the pivot plate 14 within a certain angular range (e.g., ±30 degrees). On the one hand, the distance between the writing tablet 3 and the display screen 2 can be adjusted as a whole by driving the translation mechanism 11 to adapt to different space requirements. On the other hand, the rotation angle of the writing tablet 3 relative to the pivot plate 14 can be controlled manually or by an additional fine-tuning mechanism (such as a damping hinge). This allows for fine adjustment of the writing tablet 3's tilt angle or slight orientation to optimize the visual comfort of users of different heights when writing, avoid glare, or fine-tune the visible area when multiple people are viewing it. Ultimately, the writing tablet 3 can both move with the pivot plate 14 for storage and unfolding, and can also rotate independently for small-angle posture adjustments, thereby improving the device's ergonomics and user experience while ensuring stability.

[0048] Preferably, the pivot plate 14 is provided with a first groove 15 extending horizontally; the hinge plate 10 is provided with a second groove 16 extending horizontally; the translation mechanism 11 includes at least two connecting rods 111, at least two first sliders 112, and at least two second sliders 113; the middle portions of the two connecting rods 111 are hinged to each other, one end of the connecting rod 111 is hinged to the first slider 112, and the other end of the connecting rod 111 is hinged to the second slider 113; each connecting rod 111, each first slider 112, and each second slider 113 corresponds to each other; the first slider 112 is slidably engaged with the first groove 15; and the second slider 113 is slidably engaged with the second groove 16. Specifically, the pivot plate 14 is provided with at least one first groove 15 extending horizontally, and the hinge plate 10 is provided with at least one corresponding second groove 16 extending horizontally. The core of the translation mechanism 11 consists of at least two sets (for ease of description, two sets are used as an example) of symmetrically arranged connecting rod assemblies. Each set of assemblies includes a connecting rod 111, a first slider 112, and a second slider 113. One end of each connecting rod 111 is hinged to a first slider 112, and the other end is hinged to a second slider 113. Each first slider 112 is embedded in and can slide freely within the first groove 15 of the pivot plate 14; each second slider 113 is embedded in and can slide freely within the second groove 16 of the hinge plate 10. When an external driving force (such as manual push-pull or the thrust of a small linear motor) is applied to the hinge point of the pivot plate 14 or the connecting rod 111, the angle between the two connecting rods 111 changes, forcing the first slider 112 and the second slider 113 to slide in opposite directions in their respective grooves. This efficiently converts the angular displacement of the connecting rod 111 into the linear displacement of the pivot plate 14 relative to the hinge plate 10. When the connecting rod 111 is unfolded, it forms a stable triangular support structure, which can effectively distribute the writing pressure on the writing board 3 to the hinge plate 10 and the base 9, improving the overall rigidity in the unfolded state and reducing the shaking that occurs when writing on the writing board 3.

[0049] Based on the above description, the general principle of a multifunctional demonstration device for teaching according to the present invention is as follows:

[0050] First, when the device is started, the drive motor 41 of the walking drive mechanism 4 operates, synchronously driving the first winding roller 42 and the second winding roller 46 to rotate in the same direction through the sequentially meshing first gear 47, intermediate gear 49 and second gear 48; the first winding roller 42 winds up (or releases) the first wire 44, while the second winding roller 46 releases (or winds up) the second wire 45; the first wire 44 changes direction via the guide wheel 43 and adheres to the semi-circular block 8 on the writing board 3, ultimately acting on the connected block 7, forming a balanced traction with the second wire 45, causing the writing board 3, equipped with pulley 6, to move along the preset slide rail 5 path on the side of the display screen 2 (extending downwards along the side and then horizontally towards the center), thereby switching between the first display state located on the horizontal side of the display screen 2 and the second display state located below the display screen 2; then, when the writing board 3 is in a certain display state, the writing board 3 first rotates around its pivot point with the pivot plate 14 to the unfolded state, and then moves through the base 9 or the hinge plate 10 The main locking member 12 on the upper part engages with the locked member 13 on the corresponding component to lock the writing board 3 to the hinge plate 10. Then, through the movement of the two connecting rods 111 hinged to each other in the translation mechanism 11, the first slider 112 is driven to slide synchronously in the first groove 15 of the pivot plate 14 and the second slider 113 is driven to slide synchronously in the second groove 16 of the hinge plate 10, so as to push the pivot plate 14 to drive the writing board 3, which is pivotally connected to it, to move horizontally as a whole, so as to move closer to or away from the hinge plate 10, thereby completing the process. The writing board 3 can be extended (coplanar with the display screen 2) or folded up (to save space); finally, when the writing board 3 is not needed, it can be folded up by the translation mechanism 11. Then, the writing board 3 rotates around the pivot plate 14 and engages with the locking member 13 through the main locking member 12 to fix the hinge plate 10, so that the writing board 3 connected to the hinge plate 10 is stored behind the display screen 2, thereby reducing the space occupied by the writing board 3 relative to the display screen 2 in the horizontal or vertical direction.

[0051] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multifunctional demonstration device for teaching, characterized in that, include: Support frame (1); Display screen (2), the display screen (2) is mounted on the support frame (1); A writing board (3) is movably connected to the display screen (2) and is used for teachers or students to write. A walking drive mechanism (4) drives a connected writing board (3) to switch between a first display state where the writing board (3) moves to the horizontal side of the display screen (2) and a second display state where it moves to the bottom of the display screen (2).

2. The multifunctional demonstration device for teaching according to claim 1, characterized in that, The display screen (2) is equipped with a slide rail (5), which extends downward along the horizontal edge of the display screen (2) and then extends horizontally toward the center of the display screen (2); the writing board (3) is equipped with a pulley (6), which is slidably connected to the slide rail (5).

3. The multifunctional demonstration device for teaching according to claim 2, characterized in that, The walking drive mechanism (4) includes a drive motor (41), a first winding roller (42), a guide wheel (43), and a first wire (44); the drive motor (41) is mounted on the support frame (1) and drives the first winding roller (42); the guide wheel (43) is pivotally connected to the support frame (1); the winding end of the first wire (44) is wound around the winding roller, and the pulled end of the first wire (44) passes around the guide wheel (43) and is connected to the writing board (3).

4. The multifunctional demonstration device for teaching according to claim 3, characterized in that, The writing board (3) has a connected block (7) and a semicircular block (8); the pulled end passes around the semicircular block (8) and is connected to the connected block (7).

5. A multifunctional demonstration device for teaching according to claim 3, characterized in that, The walking drive mechanism (4) further includes a second guide wire (45), a second winding roller (46), a first gear (47), a second gear (48), and a transfer gear (49); one end of the second guide wire (45) is connected to the writing board (3), and the other end of the second guide wire (45) is connected to the second winding roller (46); the second winding roller (46) is pivotally connected to the support frame (1) and is used to wind or unwind the second guide wire (45); the drive motor (41), the first gear (47), and the first winding roller (42) are sequentially connected in a transmission manner; the second gear (48) is connected to the second winding roller (46) and rotates with the second winding roller (46); the transfer gear (49) is pivotally connected to the support frame (1) and meshes with the first gear (47) and the second gear (48) respectively.

6. A multifunctional demonstration device for teaching according to claim 5, characterized in that, The guide wheel (43) is located at the top of the display screen (2), and the guide wheel (43), the first winding roller (42), the intermediate gear (49) and the second winding roller (46) are distributed in sequence along the vertical direction of the display screen (2).

7. A multifunctional demonstration device for teaching according to claim 2, characterized in that, The multifunctional demonstration device for teaching also includes a base (9) and a hinge plate (10); one side of the base (9) is connected to the pulley (6), and the other side of the base (9) is hinged to the hinge plate (10); the hinge plate (10) is driven to connect to the writing board (3) through a translation mechanism (11) so that the writing board (3) can move closer to or further away from the hinge plate (10).

8. A multifunctional demonstration device for teaching according to claim 7, characterized in that, The multifunctional demonstration device for teaching also includes a main locking member (12) and a locked member (13); the main locking member (12) is provided on one of the base (9) and the hinge plate (10), and the other is provided with the locked member (13); the main locking member (12) and the locked member (13) are locked together.

9. A multifunctional demonstration device for teaching according to claim 7, characterized in that, The multifunctional demonstration device for teaching also includes a pivot plate (14), one side of which is connected to the translation mechanism (11) so that the pivot plate (14) can move closer to or away from the hinge plate (10); the other side of the pivot plate (14) is pivotally connected to the writing board (3) so that the writing board (3) can rotate relative to the pivot plate (14) and the writing board (3) can follow the pivot plate (14) to move closer to or away from the hinge plate (10).

10. A multifunctional demonstration device for teaching according to claim 9, characterized in that, The pivot plate (14) is provided with a first slide groove (15) that extends horizontally; the hinge plate (10) is provided with a second slide groove (16) that extends horizontally; the translation mechanism (11) includes at least two connecting rods (1101), at least two first sliders (1102), and at least two second sliders (1103); the middle parts of the two connecting rods (1101) are hinged to each other, one end of the connecting rod (1101) is hinged to the first slider (1102), and the other end of the connecting rod (1101) is hinged to the second slider (1103); each connecting rod (1101), each first slider (1102), and each second slider (1103) corresponds to each other; the first slider (1102) slides in conjunction with the first slide groove (15); the second slider (1103) slides in conjunction with the second slide groove (16).

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