Screen projection teaching aid based on Internet education

Abstract

The utility model discloses a screen projection teaching aid based on Internet education, and relates to the technical field of teaching aids. The projection screen comprises a base, a projection screen assembly and a lifting assembly, the projection screen assembly comprises a supporting frame, the lifting assembly comprises two sliding rails, the two sliding rails are fixedly connected to the top of the base, the inner walls of the sliding rails are slidably connected with sliding blocks, and the front faces of the sliding blocks are fixedly connected with the back face of the supporting frame; the two lead screws are rotationally connected to the interiors of the sliding rails, and synchronous wheels are fixedly connected to the tops of the lead screws; the worm gear is fixedly connected to the top of the synchronizing wheel on the left side; the worm is rotationally connected to the side close to the worm gear through a supporting block, and the front face of the worm is in meshed connection with the back face of the worm gear. The lifting assembly is arranged, specifically, the worm drives the worm gear to rotate, then the lead screw drives the sliding block and the supporting frame to slide on the inner wall of the sliding rail, and due to the self-locking characteristic of the worm gear and the worm, the problem that due to the fact that an existing projection screen teaching aid height adjusting mechanism lacks effective self-locking, potential safety hazards exist is solved.

Description

A screen-projecting teaching tool based on internet education Technical Field

[0001] This utility model belongs to the field of teaching aids technology, and in particular relates to a screen projection teaching aid based on Internet education. Background Technology

[0002] Internet education is a new form of education that combines internet technology with the field of education with the continuous development of science and technology. Screen projection tools are often used in internet education, but existing screen projection tools still have some problems in use.

[0003] For example, the utility model patent with publication number CN215997725U includes a mounting frame, a display screen is fixedly connected to the inner surface of the front end of the mounting frame, a slide rod is fixedly connected to the inner surface of the right side of the mounting frame, and a rectangular plate is movably connected to the outer wall of the slide rod.

[0004] This invention utilizes manual rotation of a threaded rod to adjust the height of the equipment. However, this adjustment method lacks effective self-locking, and vibration or external forces can easily loosen the threaded rod, causing the equipment to slip unexpectedly and posing a safety hazard. Summary of the Invention

[0005] The purpose of this invention is to provide a screen projection teaching aid based on internet education. By setting up a lifting component, specifically by starting a motor, the worm gear drives the worm wheel to rotate. The worm wheel, through a synchronous pulley and a synchronous belt, simultaneously drives two lead screws to rotate inside the slide rail. This causes the lead screws to drive the slider and support frame to slide on the inner wall of the slide rail. Due to the self-locking characteristics of the worm wheel and worm gear, the screen projection component can be prevented from accidentally slipping due to loosening of the lead screws after height adjustment. This solves the problem that the existing screen projection teaching aid height adjustment mechanism lacks effective self-locking, which leads to safety hazards.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a screen projection teaching tool based on internet education, including a base, a screen projection component, and a lifting component. The screen projection component is installed above the base for screen projection operation and includes a support frame. The lifting component is installed on the top of the base for raising and lowering the screen projection component. The lifting component includes:

[0008] Two slide rails are fixedly connected to the top of the base. A slider is slidably connected to the inner wall of the slide rail. The front of the slider is fixedly connected to the back of the support frame.

[0009] Two lead screws are rotatably connected inside the slide rail. A synchronous pulley is fixedly connected to the top of each lead screw. The two synchronous pulleys are connected by a synchronous belt.

[0010] A worm gear, which is fixedly connected to the top of the synchronizing pulley located on the left side;

[0011] Two support blocks are fixedly connected to the top of the slide rail on the side near the worm gear;

[0012] A worm gear, which is rotatably connected to one side of two support blocks, and the front of the worm gear meshes with the back of the worm wheel;

[0013] The motor is fixedly connected to the top of the slide rail, and the right output end of the motor is fixedly connected to the left side of the worm gear.

[0014] Furthermore, the projection component also includes:

[0015] A projection screen, which is fixedly connected to the center of the front of the support frame;

[0016] Two fixed blackboards are respectively fixedly connected to the left and right sides of the support frame;

[0017] Two movable blackboards are slidably connected to the front of two fixed blackboards and the projection screen, respectively.

[0018] Furthermore, the support frame is fixedly connected to two limiting guide rails on its front side, and the outer surface of the limiting guide rails is slidably connected to the interior of the movable blackboard.

[0019] Furthermore, a limiting block is fixedly connected at the center of the limiting guide rail, and a limiting groove is opened on the side of the movable blackboard near the limiting block. The outer surface of the limiting block is inserted into the inner wall of the limiting groove, and magnetic buckles are fixedly connected to the corresponding sides of the two movable blackboards.

[0020] Furthermore, a storage cabinet is fixedly connected to the top of the base, and two drawers are slidably connected inside the storage cabinet.

[0021] Furthermore, anti-collision pads are fixedly connected to the corners of both the storage cabinet and the supporting frame.

[0022] Furthermore, several rubber pads are fixedly connected to the bottom of the base.

[0023] This utility model has the following beneficial effects:

[0024] 1. This utility model, by setting up a lifting component, specifically by starting a motor, causes the worm gear to drive the worm wheel to rotate. The worm wheel, through a synchronous pulley and a synchronous belt, simultaneously drives two lead screws to rotate inside the slide rail. This causes the lead screws to drive the slider and support frame to slide on the inner wall of the slide rail. Due to the self-locking characteristics of the worm wheel and worm gear, the screen projection component can be prevented from accidentally slipping due to loosening of the lead screws after the height adjustment is completed, thus improving the stability of the screen projection component.

[0025] 2. This utility model, by setting up a projection component, specifically provides writing functions for a fixed blackboard and a movable blackboard under normal circumstances, allowing for normal lecturing. When projection is needed, the two movable blackboards are pushed to the sides to expose the projection screen, achieving a seamless integration and rapid switching between multimedia projection and traditional blackboard writing, thus improving the flexibility of teaching methods.

[0026] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 is a schematic diagram of the lifting component structure of this utility model;

[0030] Figure 3 is a schematic diagram of the worm gear and worm structure of this utility model;

[0031] Figure 4 is a schematic diagram of the screen projection component of this utility model;

[0032] Figure 5 is a schematic diagram of the base structure of this utility model.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Base; 11. Storage cabinet; 111. Drawer; 12. Anti-collision pad; 13. Rubber pad; 2. Projection component; 21. Support frame; 211. Projection cloth; 212. Fixed blackboard; 213. Movable blackboard; 22. Limiting guide rail; 221. Limiting block; 222. Limiting groove; 23. Magnetic buckle; 3. Lifting component; 31. Slide rail; 311. Slider; 312. Lead screw; 313. Synchronous pulley; 32. Worm gear; 321. Support block; 322. Worm; 323. Motor. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0036] Please refer to Figures 1-5. The present invention has the following specific embodiment.

[0037] Example 1

[0038] This utility model is a screen projection teaching tool based on internet education, including a base 1, a screen projection component 2, and a lifting component 3. The screen projection component 2 is installed above the base 1 for screen projection operation and includes a support frame 21. The lifting component 3 is installed on the top of the base 1 for raising and lowering the screen projection component 2. The lifting component 3 includes:

[0039] Two slide rails 31 are fixedly connected to the top of the base 1. A slider 311 is slidably connected to the inner wall of the slide rail 31. The front of the slider 311 is fixedly connected to the back of the support frame 21.

[0040] Two lead screws 312 are rotatably connected inside the slide rail 31. A synchronous pulley 313 is fixedly connected to the top of the lead screw 312. The two synchronous pulleys 313 are connected by a synchronous belt drive.

[0041] Worm gear 32 is fixedly connected to the top of synchronous pulley 313 located on the left side;

[0042] Two support blocks 321 are fixedly connected to the top of the slide rail 31 on the side near the worm gear 32;

[0043] Worm 322 is rotatably connected to one side of the two support blocks 321, and the front of worm 322 meshes with the back of worm wheel 32.

[0044] Motor 323 is fixedly connected to the top of slide rail 31, and the right output end of motor 323 is fixedly connected to the left side of worm gear 32.

[0045] As shown in Figures 1-3, by setting up the lifting component 3, specifically by starting the motor 323, the worm gear 322 drives the worm wheel 32 to rotate. The worm wheel 32 drives the two lead screws 312 to rotate inside the slide rail 31 through the synchronous pulley 313 and the synchronous belt. This causes the lead screws 312 to drive the slider 311 and the support frame 21 to slide on the inner wall of the slide rail 31. Due to the self-locking characteristics of the worm wheel 32 and the worm gear 322, the lead screws 312 can be prevented from loosening after the height adjustment, thus preventing the projection component 2 from accidentally slipping down and improving the stability of the projection component 2.

[0046] Example 2

[0047] The difference from Embodiment 1 is that this embodiment discloses the switching function between the traditional blackboard and multimedia projection of the projection component 2:

[0048] Screen mirroring component 2 also includes:

[0049] The projection cloth 211 is fixedly connected to the center of the front of the support frame 21.

[0050] Two fixed blackboards 212 are fixedly connected to the left and right sides of the support frame 21, respectively.

[0051] Two movable blackboards 213 are slidably connected to the front of two fixed blackboards 212 and projection cloth 211, respectively.

[0052] As shown in Figure 3, by setting up the projection component 2, the fixed blackboard 212 and the movable blackboard 213 provide writing functions for normal lecturing under normal circumstances. When projection is needed, the two movable blackboards 213 are pushed to the sides respectively, thus exposing the projection screen 211 for projection. This achieves a seamless integration and rapid switching between multimedia projection and traditional blackboard writing, improving the flexibility of teaching methods.

[0053] The support frame 21 has two fixedly connected limit guide rails 22 on its front side, and the outer surface of the limit guide rails 22 is slidably connected to the inside of the movable blackboard 213.

[0054] A limiting block 221 is fixedly connected at the center of the limiting guide rail 22. A limiting groove 222 is opened on the side of the movable blackboard 213 near the limiting block 221. The outer surface of the limiting block 221 is inserted into the inner wall of the limiting groove 222. Magnetic buckles 23 are fixedly connected to the corresponding sides of the two movable blackboards 213.

[0055] The limiting guide rail 22 provides a stable movement trajectory for the movable blackboard 213, preventing the movable blackboard 213 from shifting or getting stuck. The limiting block 221 is inserted into the inner wall of the limiting groove 222 to limit the movement distance of the movable blackboard 213, so that the centers of the two movable blackboards 213 are aligned. The movable blackboard 213 is fixed by the magnetic force of the magnetic buckle 23, preventing the movable blackboard 213 from sliding accidentally during writing.

[0056] Example 3

[0057] The difference from Embodiment 2 is that this embodiment discloses the multifunctionality of the base 1:

[0058] A storage cabinet 11 is fixedly connected to the top of the base 1, and two drawers 111 are slidably connected inside the storage cabinet 11.

[0059] Anti-collision pads 12 are fixedly connected to the corners of both the locker 11 and the support frame 21.

[0060] Several rubber pads 13 are fixedly connected to the bottom of the base 1.

[0061] As shown in Figure 5, the storage cabinet 11 and drawer 111 provide storage space for teaching aids, making it convenient for teachers to access them; anti-collision pads are added to key corners to effectively buffer collision impacts and reduce the risk of accidental bumps and injuries to students; the rubber pad 13 provides good anti-slip function to prevent the device from being accidentally pushed and moved during use, ensuring stability.

[0062] A specific application of this embodiment is as follows: In use, first adjust the height of the projection component 2 as needed, start the motor 323, and drive the worm gear 322 to rotate between the two support blocks 321. This causes the worm gear 322 to drive the worm wheel 32, which in turn drives the two lead screws 312 to rotate inside the slide rail 31 via the synchronous wheel 313 and synchronous belt. This causes the lead screws 312 to drive the slider 311 and support frame 21 to slide on the inner wall of the slide rail 31. Due to the self-locking characteristics of the worm wheel 32 and worm gear 322, the lead screws 312 can be prevented from loosening after height adjustment, thus preventing the projection component 2 from accidentally slipping. Under normal circumstances, the fixed blackboard 212 and the movable blackboard 213 provide writing functionality for normal lectures. When projection is needed, push the two movable blackboards 213 to the sides to expose the projection screen 211 for projection. When moving, the movable blackboard 213 slides on the outer surface of the limiting guide rail 22. The limiting guide rail 22 provides a stable movement trajectory for the movable blackboard 213, preventing the movable blackboard 213 from deviating or getting stuck. When projection is not needed, the two movable blackboards 213 are pushed towards the center, and the limiting block 221 is inserted into the inner wall of the limiting groove 222 to limit the movement distance of the movable blackboard 213, so that the centers of the two movable blackboards 213 are aligned. The movable blackboard 213 is fixed by the magnetic force of the magnetic buckle 23 to prevent the movable blackboard 213 from accidentally sliding during writing. The teaching tools are placed in the drawer 111 of the storage cabinet 11 for easy access. Anti-collision pads 12 are set at the corners of the storage cabinet 11 and the support frame 21 to effectively reduce the risk of accidental bumps and injuries to students. The rubber pad 13 at the bottom of the base 1 increases the friction with the ground to ensure the overall stability of the device.

[0063] 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 present 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.

[0064] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A screen projection teaching aid based on internet education, comprising a base (1), a screen projection component (2), and a lifting component (3), wherein the screen projection component (2) is installed above the base (1) for screen projection operation, and the screen projection component (2) includes a support frame (21), characterized in that: The lifting assembly (3) is installed on the top of the base (1) and is used to lift the projection assembly (2). The lifting assembly (3) includes: two slide rails (31), both of which are fixedly connected to the top of the base (1). A slider (311) is slidably connected to the inner wall of the slide rail (31), and the front of the slider (311) is fixedly connected to the back of the support frame (21); two lead screws (312), both of which are rotatably connected inside the slide rails (31). A synchronous pulley (313) is fixedly connected to the top of the lead screw (312), and the two synchronous pulleys (313) are driven by a synchronous belt. Connections: worm gear (32), which is fixedly connected to the top of the synchronous pulley (313) located on the left side; two support blocks (321), which are fixedly connected to the top of the slide rail (31) on one side near the worm gear (32); worm (322), which is rotatably connected to the corresponding side of the two support blocks (321), and the front of the worm (322) meshes with the back of the worm gear (32); motor (323), which is fixedly connected to the top of the slide rail (31), and the right output end of the motor (323) is fixedly connected to the left side of the worm gear (32).

2. The screen-projecting teaching aid based on internet education according to claim 1, characterized in that, The projection component (2) further includes: a projection cloth (211), which is fixedly connected to the center of the front of the support frame (21); two fixed blackboards (212), which are fixedly connected to the left and right sides of the support frame (21); and two movable blackboards (213), which are slidably connected to the front of the two fixed blackboards (212) and the projection cloth (211).

3. The screen projection teaching aid based on internet education according to claim 2, characterized in that, The support frame (21) has two fixed guide rails (22) on its front side, and the outer surface of the guide rails (22) is slidably connected to the inside of the movable blackboard (213).

4. The screen projection teaching aid based on internet education according to claim 3, characterized in that, A limiting block (221) is fixedly connected at the center of the limiting guide rail (22). A limiting groove (222) is opened on the side of the movable blackboard (213) near the limiting block (221). The outer surface of the limiting block (221) is inserted into the inner wall of the limiting groove (222). A magnetic buckle (23) is fixedly connected to the corresponding side of the two movable blackboards (213).

5. The screen projection teaching aid based on internet education according to claim 1, characterized in that, The base (1) is fixedly connected to a storage cabinet (11) on top, and the storage cabinet (11) has two drawers (111) that are slidably connected inside.

6. The screen projection teaching aid based on internet education according to claim 5, characterized in that, Anti-collision pads (12) are fixedly connected to the corners of the locker (11) and the support frame (21).

7. The screen projection teaching aid based on internet education according to claim 1, characterized in that, The base (1) has several rubber pads (13) fixedly connected to its bottom.

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