A case presentation device

Abstract

The application discloses a case display device and relates to the technical field of teaching aids, which comprises a support frame, the top end of the support frame is fixed with two vertical frames, one side of one of the vertical frames is fixed with a fixed box, the bottom portions of the two vertical frames are fixed with a horizontal frame, the top end of the horizontal frame is fixed with a partition plate, the partition plate divides the area formed by the horizontal frame and the support frame into a display area and a writing area, an electronic screen is arranged in the display area, and a plurality of slots are formed in the partition plate and the horizontal frame located in the writing area. The application is provided with an electronic screen, a writing board, a tablet computer and a high-speed scanner. When in use, a teacher stores a case video or a live video in the tablet computer and plays the video through the tablet computer. The high-speed scanner projects the content in the tablet computer onto the electronic screen. The teacher writes important legal information on the writing board while playing the video, realizes video playing and legal information writing simultaneously, and deepens students' understanding of legal information.

Description

Technical Field

[0001] This invention relates to the field of teaching aids technology, specifically a case demonstration device. Background Technology

[0002] In the process of teaching legal knowledge, many legal provisions are quite obscure and difficult to understand. Purely theoretical teaching is unlikely to arouse students' interest, and it is also difficult for them to understand the specific content of the provisions. Therefore, when explaining, teachers usually combine specific video cases for analysis and case simulations, allowing students to immerse themselves in the cases, so as to better facilitate students' understanding and learning of legal knowledge.

[0003] Many schools are now equipped with multimedia equipment, with projectors currently being the mainstream teaching method due to their low cost. However, with the development of imaging technology, teaching display equipment will increasingly adopt higher-definition and intelligent 4K, 8K, and even holographic display devices. For example, in teaching environmental protection law, different pollutants and different levels of pollution have different penalties. Simply having the teacher verbally explain the law is insufficient for students to fully understand the relevant provisions. Furthermore, in teaching environmental protection law, a single case often involves multiple teaching points. Traditionally, teachers need to simply write the key points on the blackboard, ideally placing them next to the specific content of the case for easy student reference. They also use screenshots of teaching materials for annotation and supplementary information using keyboard and mouse. However, these supplementary additions are often not saved in the lesson plan. Therefore, when teaching the same content to different classes or groups, it is often necessary to rewrite or annotate the key points, which increases the workload of the instructor. To address this issue, a case display device is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a case demonstration device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a case display device, comprising a support frame, two vertical frames fixed to the top of the support frame, a fixed box fixed to one side of one of the vertical frames, a horizontal frame fixed between the bottoms of the two vertical frames, a partition fixed to the top of the horizontal frame, the partition dividing the area formed by the horizontal frame and the support frame into a display area and a writing area, an electronic screen being provided in the display area, multiple slots being provided on the partition and the horizontal frame in the writing area, a writing board being movably inserted into the slots, a lifting mechanism being provided on one side of the writing board, a rotating mechanism being provided at the bottom of the lifting mechanism, the lifting mechanism including a lead screw rollingly connected to the bottom end of the horizontal frame, the rotating mechanism including a transmission rod rollingly connected to the inner wall of the bottom end of the fixed box, a gap being formed between the bottom end of the lead screw and the top end of the transmission rod, a linkage mechanism being provided between the lead screw and the transmission rod to enable the lead screw and the transmission rod to rotate synchronously, a driving mechanism being provided on one side of the linkage mechanism.

[0006] Preferably, a controller is fixed to one side of the vertical frame, a placement plate is fixed to the front of the vertical frame, a high-speed document scanner is fixed to the top of the placement plate, and a tablet computer is placed on the top of the placement plate, with the tablet computer located directly below the camera head of the high-speed document scanner.

[0007] Preferably, the bottom end of the support frame is fixed with multiple casters.

[0008] Preferably, the lifting mechanism further includes a screw block fixed to the bottom side of the writing board, and the screw block is movably screwed to the screw rod.

[0009] Preferably, the rotating mechanism includes a turbine fixed to the bottom of the transmission rod, a worm gear rollingly connected between the side walls of the fixed box, the turbine and the worm gear meshing, a motor fixed to the side of the fixed box, and the output end of the motor fixed to the end of the worm gear.

[0010] Preferably, the linkage mechanism includes multiple limiting external teeth fixed to the top of the transmission rod, an insertion tube is movably sleeved on the bottom of the lead screw, the bottom and top of the insertion tube are integrally formed with a bottom convex ring and a top convex ring respectively, a limiting groove is formed between the bottom convex ring and the top convex ring, and multiple limiting internal slots are opened on the inner side of the bottom tube of the insertion tube, the limiting internal slots and the limiting external teeth are adapted to each other.

[0011] Preferably, the driving mechanism includes a shift fork ring movably disposed in the limiting groove and a driving box fixed to the inner side of the vertical frame. The driving box has a movable groove, and a piston chamber is formed at the top of the movable groove. A fixed shaft is fixed between the top and bottom inner walls of the movable groove. A connecting block is integrally formed on the side of the shift fork ring. The connecting block is movably inserted into the fixed shaft. A spring is fixed between the bottom end of the connecting block and the bottom wall of the movable groove. A pneumatic pushing mechanism is provided at the top of the connecting block.

[0012] Preferably, the pneumatic actuation mechanism includes a sleeve shaft that is movably sleeved with a fixed shaft. An annular pressure plate is integrally formed at the bottom end of the sleeve shaft, and a piston ring is fixed at the top end of the sleeve shaft. The outer wall of the piston ring contacts the side wall of the piston chamber. An air inlet pipe and an air outlet pipe are fixedly connected to the top of the drive box. Solenoid valves are connected to the pipe bodies of both the air inlet pipe and the air outlet pipe. An air intake manifold is connected to the pipe body of the air inlet pipe, and an air pump is connected to the pipe body of the air intake manifold.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This case demonstration device is equipped with an electronic screen, a writing board, a tablet computer, and a document scanner. When in use, teachers store case videos or on-site videos on the tablet computer and play them through the tablet computer. The document scanner projects the content of the tablet computer onto the electronic screen. While the video is playing, the teacher writes important legal information on the writing board, realizing the simultaneous playback of videos and writing of legal provisions, which deepens students' understanding of legal provisions and improves learning efficiency.

[0015] In addition, multiple writing boards can be set up and stacked. When one writing board is finished, the teacher can use the controller to control the lifting mechanism, linkage mechanism and drive mechanism to lower the finished writing board and then raise the unwritten writing board behind it to write new content. The above steps are repeated to complete the teaching of the case. Since there are multiple writing boards that can be displayed in sequence, it is not necessary to rewrite when teaching the same knowledge to different groups of people. This reduces the teacher's workload, reduces writing time, and further improves the teaching quality. Attached Figure Description

[0016] Figure 1 This is the left-side axial view of the present invention;

[0017] Figure 2 This is the right-side axial view of the present invention;

[0018] Figure 3 This is a half-sectional view of the present invention;

[0019] Figure 4 This is a half-sectional view of the fixing box of the present invention;

[0020] Figure 5 This is a half-sectional view of the linkage mechanism of the present invention;

[0021] Figure 6 This is a half-sectional view of the driving mechanism of the present invention.

[0022] In the diagram: 1. Support frame; 101. Vertical frame; 102. Horizontal frame; 103. Partition; 104. Slot; 3. Electronic screen; 4. Writing board; 5. Fixing box; 6. Lifting mechanism; 601. Lead screw block; 602. Lead screw; 603. Transmission rod; 604. Turbine; 605. Worm gear; 606. Limiting external gear; 607. Motor; 7. Linkage mechanism; 701. Insertion tube; 702. Bottom convex ring; 703. Top convex ring; 704. Limiting slot; 8. Drive mechanism; 801. Drive box; 802. Fixed shaft; 803. Spring; 804. Sleeve shaft; 805. Ring-shaped pressure plate; 806. Piston ring; 807. Piston chamber; 808. Inlet pipe; 809. Outlet pipe; 810. Solenoid valve; 901. Shift fork ring; 902. Connecting block; 10. Caster wheel; 11. Placement plate; 12. Tablet PC; 13. Document scanner; 14. Controller. Detailed Implementation

[0023] 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.

[0024] It should be noted that in the description of this invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0027] like Figures 1-6As shown, the present invention provides a technical solution: a case display device, including a support frame 1. To facilitate the movement of the device and further increase its practicality, casters 10 are fixed at the four corners of the bottom of the support frame 1. The casters 10 have a braking function. When using the device, the device is pushed to a suitable position, and then the braking plates of the casters 10 are stepped on to limit the device's position. Two vertical frames 101 are fixed at the top of the support frame 1. A fixed box 5 is fixed to one side of one of the vertical frames 101. A horizontal frame 102 is fixed between the bottoms of the two vertical frames 101. A partition 103 is fixed at the top of the horizontal frame 102, thereby dividing the area formed by the horizontal frame 102 and the support frame 1 into a display area and a writing area. An electronic screen 3 is provided in the display area. Four slots 104 are provided on the partition 103 and the horizontal frame 102 in the writing area. A writing board 4 is movably inserted into the slots 104. The writing board 4 is preferably a white plastic board sold on the market. The writing board 4 has a lifting mechanism 6 on one side, which enables the writing board 4 to be raised and lowered. A rotating mechanism is provided at the bottom of the lifting mechanism 6, which provides power to the lifting mechanism 6. The lifting mechanism 6 includes a lead screw 602 that is rolledly connected to the bottom end of the horizontal frame 102. In addition, the lifting mechanism 6 also includes a screw block 601 that is fixed to the bottom side of the writing board 4. It is known that a partition 103 extends from the bottom of the writing board 4, and the screw block 601 is located at the bottom of the partition 103. The screw block 601 is movably screwed to the lead screw 602. The rotating mechanism includes a transmission rod 603 that is rolledly connected to the inner wall of the bottom end of the fixed box 5. It should be noted that a gap is formed between the bottom end of the lead screw 602 and the top end of the transmission rod 603, that is, the gap separates the lead screw 602 and the transmission rod 603. A linkage mechanism 7 is provided between the lead screw 602 and the transmission rod 603, which enables the lead screw 602 and the transmission rod 603 to rotate synchronously, and a drive mechanism 8 is provided on one side of the linkage mechanism 7.

[0028] To enable students to simultaneously watch videos and write legal provisions, thereby deepening their understanding of the provisions and improving learning efficiency, such as... Figure 1 As shown, a controller 14 is fixed on one side of the vertical frame 101, a placement plate 11 is fixed on the front of the vertical frame 101, a high-speed document scanner 13 is fixed on the top of the placement plate 11, and a tablet computer 12 is placed on the top of the placement plate 11. The tablet computer 12 is located directly below the camera head of the high-speed document scanner 13.

[0029] The controller 14 is electrically connected to the tablet computer 12, the document scanner 13, and the electronic screen 3.

[0030] To achieve the rotation of the lead screw 602, and thus the up-and-down movement of the writing board 4, as follows: Figure 1 , Figure 2 and Figure 4As shown, the rotating mechanism includes a turbine 604 fixed to the bottom rod of the transmission rod 603, a worm gear 605 rollingly connected between the side walls of the fixed box 5, and the turbine 604 and the worm gear 605 meshing with each other. A motor 607 is fixed to the side of the fixed box 5. The motor 607 is preferably a servo motor, and the output end of the motor 607 is fixed to the end of the worm gear 605.

[0031] Specifically, the controller 14 controls the motor 607 to rotate, and when the motor 607 rotates, it drives the worm 605 to rotate. Since the turbine 604 and the worm 605 mesh, the rotation of the turbine 604 realizes the rotation of the transmission rod 603.

[0032] To achieve sequential rotation of the lead screw 602, such as Figure 4 and Figure 5 As shown, the linkage mechanism 7 includes multiple limiting external teeth 606 fixed to the top of the transmission rod 603. An insertion tube 701 is movably sleeved on the bottom rod of the lead screw 602. A bottom protruding ring 702 and a top protruding ring 703 are integrally formed at the bottom and top of the insertion tube 701, respectively, and a limiting groove is formed between the bottom protruding ring 702 and the top protruding ring 703. Multiple limiting inner slots 704 are opened on the inner side of the bottom tube of the insertion tube 701, and the limiting inner slots 704 and the limiting external teeth 606 are adapted to each other.

[0033] Specifically, when the insertion tube 701 moves upward, the inner limiting slot 704 disengages from the outer limiting tooth 606. At this time, the transmission rod 603 rotates, while the lead screw 602 does not rotate. When the insertion tube 701 moves downward, the inner limiting slot 704 engages with the outer limiting tooth 606. At this time, the transmission rod 603 and the lead screw 602 rotate synchronously.

[0034] In this plan, such as Figure 4 and Figure 6 As shown, the drive mechanism 8 includes a shift fork ring 901 movably disposed in a limiting groove and a drive box 801 fixed to the inner side of the vertical frame 101. A movable groove is provided in the drive box 801, and a piston chamber 807 is formed at the top of the movable groove. The cross-section of the piston chamber 807 is circular. A fixed shaft 802 is fixed between the top and bottom inner walls of the movable groove. A connecting block 902 is integrally formed on the side of the shift fork ring 901, and the connecting block 902 is movably inserted into the fixed shaft 802. A spring 803 is fixed between the bottom end of the connecting block 902 and the bottom wall of the movable groove. A pneumatic push mechanism is provided at the top of the connecting block 902.

[0035] Specifically, in the initial state, under the elastic force of the spring 803, the top surface of the shift fork ring 901 is pressed against the bottom surface of the top convex ring 703, and the transmission rod 603 and the lead screw 602 separate.

[0036] To achieve the up-and-down movement of the shift fork ring 901, thereby controlling the up-and-down movement of the insertion tube 701, and to achieve synchronous rotation or separation between the lead screw 602 and the transmission rod 603, as follows: Figure 6 As shown, the pneumatic actuator includes a sleeve shaft 804 that is movably sleeved with a fixed shaft 802. An annular pressure plate 805 is integrally formed at the bottom end of the sleeve shaft 804. The bottom surface of the annular pressure plate 805 is always in contact with the top surface of the connecting block 902. A piston ring 806 is fixed at the top of the sleeve shaft 804, and the outer wall of the piston ring 806 is in contact with the side wall of the piston chamber 807. An air inlet pipe 808 and an air outlet pipe 809 are fixedly connected to the top of the drive box 801. A solenoid valve 810 is connected to the pipe body of both the air inlet pipe 808 and the air outlet pipe 809. The controller 14 is electrically connected to the solenoid valve 810. An air intake manifold is connected to the pipe body of the air inlet pipe 808. It is known that the air intake manifold is fixedly connected to all the air inlet pipes 808, and an air pump is connected to the pipe body of the air intake manifold.

[0037] In addition to this scheme, in the initial setup, the motor 607 rotates, thereby driving the transmission rod 603 to rotate. At this time, the air pump is off. When writing is required on the first writing plate 4 on the front, the controller 14 controls the solenoid valves 810 on the first air outlet pipe 809 and the remaining air inlet pipes 808 on the front to close, and the solenoid valves 810 on the first air inlet pipe 808 on the front to open. The controller 14 controls the air pump to start. Under the action of the air pressure in the piston chamber 807, the piston ring 806 moves downward. Under the compression of the annular pressure plate 805, the shift fork ring 901 moves downward. At this time, the spring 803 contracts, and the shift fork ring 901 drives the linkage mechanism 7 to move downward, realizing the synchronous rotation between the lead screw 602 and the transmission rod 603. Under the rotation of the lead screw 602, the first writing plate 4 is raised. When the second writing plate 4 is raised, the above steps are repeated to make the first writing plate 4 on the front descend and reset. Then, the second writing plate 4 is raised through the linkage of the relevant mechanisms (the principle is the same as the raising and lowering of the first writing plate 4 on the front, and will not be described again).

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A case demonstration device, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixed with two vertical frames (101), one of which is fixed with a fixed box (5) on one side. A horizontal frame (102) is fixed between the bottoms of the two vertical frames (101). A partition (103) is fixed at the top of the horizontal frame (102). The partition (103) divides the area formed by the horizontal frame (102) and the support frame (1) into a display area and a writing area. An electronic screen (3) is set in the display area. Multiple slots (104) are opened on the partition (103) and the horizontal frame (102) in the writing area. A writing board (4) is movably inserted into the slot (104). A lifting mechanism (6) is provided on one side of the writing board (4), and a rotating mechanism is provided at the bottom of the lifting mechanism (6). The lifting mechanism (6) includes a lead screw (602) that is rolled to the bottom end of the horizontal frame (102), and the rotating mechanism includes a transmission rod (603) that is rolled to the inner wall of the bottom end of the fixed box (5). A gap is formed between the bottom end of the lead screw (602) and the top end of the transmission rod (603). A linkage mechanism (7) is provided between the lead screw (602) and the transmission rod (603) to enable the lead screw (602) and the transmission rod (603) to rotate synchronously. A drive mechanism (8) is provided on one side of the linkage mechanism (7). The lifting mechanism (6) also includes a screw block (601) fixed to the bottom side of the writing board (4), and the screw block (601) is movably screwed to the screw rod (602); The linkage mechanism (7) includes multiple limiting external teeth (606) fixed to the top of the transmission rod (603). A tube (701) is movably sleeved on the bottom rod of the lead screw (602). The bottom and top of the tube (701) are integrally formed with a bottom protrusion ring (702) and a top protrusion ring (703). A limiting groove is formed between the bottom protrusion ring (702) and the top protrusion ring (703). Multiple limiting inner slots (704) are opened on the inner side of the bottom tube of the tube (701). The limiting inner slots (704) and the limiting external teeth (606) are compatible. The drive mechanism (8) includes a shift fork ring (901) movably disposed in a limiting groove and a drive box (801) fixed to the inner side of the vertical frame (101). The drive box (801) has a movable groove, and a piston chamber (807) is formed at the top of the movable groove. A fixed shaft (802) is fixed between the top and bottom inner walls of the movable groove. A connecting block (902) is integrally formed on the side of the shift fork ring (901). The connecting block (902) is movably inserted into the fixed shaft (802). A spring (803) is fixed between the bottom end of the connecting block (902) and the bottom wall of the movable groove. A pneumatic push mechanism is provided at the top of the connecting block (902).

2. The case demonstration device according to claim 1, characterized in that: A controller (14) is fixed on one side of the vertical frame (101), a placement plate (11) is fixed on the front of the vertical frame (101), a high-speed document scanner (13) is fixed on the top of the placement plate (11), and a tablet computer (12) is placed on the top of the placement plate (11). The tablet computer (12) is located directly below the camera head of the high-speed document scanner (13).

3. The case demonstration device according to claim 1, characterized in that: The bottom end of the support frame (1) is fixed with multiple casters (10).

4. The case demonstration device according to claim 1, characterized in that: The rotating mechanism includes a turbine (604) fixed to the bottom rod of the transmission rod (603), a worm (605) rollingly connected between the side walls of the fixed box (5), the turbine (604) and the worm (605) meshing with each other, and a motor (607) fixed to the side of the fixed box (5), the output end of the motor (607) being fixed to the end of the worm (605).

5. The case demonstration device according to claim 1, characterized in that: The pneumatic propulsion mechanism includes a sleeve shaft (804) that is movably sleeved with a fixed shaft (802). The bottom end of the sleeve shaft (804) is integrally formed with an annular pressure plate (805). The top end of the sleeve shaft (804) is fixed with a piston ring (806). The outer wall of the piston ring (806) is in contact with the side wall of the piston chamber (807). The top of the drive box (801) is fixedly connected to an air inlet pipe (808) and an air outlet pipe (809). Solenoid valves (810) are connected to the pipe bodies of both the air inlet pipe (808) and the air outlet pipe (809). An air inlet main pipe is connected to the pipe body of the air inlet pipe (808), and an air pump is connected to the pipe body of the air inlet main pipe.

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