Audio-visual equipment for health education

Abstract

The invention relates to the technical field of audio-visual equipment, in particular to audio-visual equipment for health education, which comprises a base, an electric shear fork frame, a screen, a clamping ring, a rolling assembly, a limiting belt, a clamping block and the like, two electric shear fork frames are arranged on the upper side of the base; the ends, away from the base, of all the electric shear fork frames are jointly connected with a connecting frame. The four corners of the back side of each screen are each rotationally connected with a clamping ring. The base and the connecting frame are jointly connected with a winding assembly. The winding assembly is connected with a plurality of limiting belts. Each limiting belt is connected with a plurality of clamping blocks; and each clamping block is provided with two clamping stop rods. The four adjacent screens are clamped and fixed through the two clamping rods on the clamping block, mutual abrasion between the screens in each row in the longitudinal direction is prevented, the protection effect on equipment is enhanced, the mode that reinforcing is conducted in the mode that straight steel wires and gaskets are attached to the back sides of the folding screens in the prior art is different, and it can be ensured that the screens in each row in the longitudinal direction are stable under strong wind.

Description

Technical Field

[0001] This invention relates to the field of audiovisual equipment technology, and more particularly to an audiovisual device for health education. Background Technology

[0002] Audiovisual equipment refers to devices that can provide visual and auditory information simultaneously, and is commonly used in various occasions such as entertainment, education, and conferences. As a type of audiovisual equipment, liftable LED folding screens are widely used in large-scale health education lectures both outdoors and indoors. Liftable LED folding screens consist of multiple foldable screen units and special hinges or connecting mechanisms for connecting the screen units. When using liftable LED folding screens outdoors in windy conditions, existing methods typically involve installing telescopic rods or steel wires behind the folding screens to reinforce them and prevent swaying. However, when the wind is strong, despite these reinforcement measures, the existing reinforcement measures are ineffective in reinforcing each column of screen units in the vertical direction. After being blown by the wind, each column of screen units still sways back and forth, causing mutual wear between the columns and reducing the lifespan of the screens.

[0003] Furthermore, existing liftable LED folding screens are stacked in layers after storage, which puts greater pressure on the bottom screens, making them prone to damage. Especially during transportation, the screen units stacked at the bottom are easily damaged by bumps and vibrations.

[0004] In summary, this application proposes an audiovisual device for health education, which improves upon the aforementioned technical problems. Summary of the Invention

[0005] In order to overcome the shortcomings of existing lifting LED folding screen reinforcement measures, which have poor reinforcement effect on each column of screen units in the vertical direction, and which cause each column of screen units to wobble back and forth when blown by the wind, resulting in mutual wear between each column of screens and reducing the lifespan of the screen, this invention provides an audio-visual device for health education.

[0006] The technical solution is as follows: An audiovisual device for health education includes a base, an electric scissor lift, and a screen; two electric scissor lifts are provided on the upper side of the base; all electric scissor lifts are connected to a connecting frame at their ends away from the base; several screens arranged in a rectangular array together form a folding screen; the lower end of the folding screen is rotatably connected to the base; it also includes an adjustment component, retaining rings, a winding component, limiting bands, locking blocks, and magnetic blocks; the connecting frame is provided with an adjustment component for adjusting the state of the folding screen; each screen has a retaining ring rotatably connected to one of its four corners on the back side; the base and the connecting frame are connected to a winding component; the winding component is connected to several limiting bands; each limiting band is located between two longitudinally adjacent columns of screens; each limiting band is connected to several locking blocks for fixing the screen; each locking block has two locking rods for engaging with the retaining rings; each screen has two magnetic blocks on the back side for guiding the locking blocks; each locking block is made of magnetic metal.

[0007] Furthermore, in the aforementioned audiovisual equipment for health education, the adjustment components include slide rails, electric sliders, and connecting rods; two slide rails are fixedly connected to the connecting frame; the rear of each slide rail is configured to be bent downwards; a storage cavity for storing a folding screen is provided on the front side of the base; an electric slider is slidably connected to each slide rail; all electric sliders are fixedly connected to a connecting rod; the connecting rod is rotatably connected to the upper end of the folding screen.

[0008] Furthermore, in the aforementioned audiovisual equipment for health education, the take-up assembly includes a telescopic drive component 1, a motor, and a take-up roller; two telescopic drive components 1 are fixedly mounted on the base; two telescopic drive components 1 are also fixedly mounted on the connecting frame; a motor is fixedly mounted at the telescopic end of each telescopic drive component 1; a take-up roller is fixedly mounted at the output end of the motor on the base and the connecting frame, and the take-up roller is used to take up the limiting belt; both ends of each limiting belt are fixedly mounted to the corresponding take-up roller.

[0009] Furthermore, the upper end of each locking lever is designed to be arc-shaped.

[0010] Furthermore, each magnetic block is shaped like the number 7.

[0011] Furthermore, the aforementioned audiovisual equipment for health education also includes a protective pad, a limiting block, and a telescopic drive component II; several telescopic drive components II are fixedly connected in the storage cavity; a protective pad for protecting the folding screen is fixedly connected to the telescopic ends of all telescopic drive components II; several limiting blocks for limiting the folding screen are fixedly connected to the upper side of the protective pad; the limiting blocks are made of hard rubber; and the upper end of each limiting block is set to an arc shape.

[0012] Furthermore, the upper side of the protective pad is provided with several limiting rods for limiting the screen; the limiting rods are made of hard rubber; each limiting block has several clearance grooves; each limiting rod is located in the corresponding clearance groove.

[0013] Furthermore, each limiting block has several magnetic locating pieces on its rear side.

[0014] Furthermore, the aforementioned audiovisual equipment for health education also includes a sandwich pad; a sandwich pad for protecting the screen is fixedly connected between each pair of vertically adjacent screens.

[0015] Furthermore, the aforementioned audiovisual equipment for health education also includes a partition system, which includes a cover plate and partition pads; the cover plate is rotatably connected to the front side of the base; and several partition pads for separating and protecting the screen are fixedly attached to the cover plate.

[0016] This invention has the following advantages: It achieves the locking and fixing of four adjacent screens using two locking rods on the locking block, preventing mutual wear between the screens in each vertical column and enhancing the protection of the device. Unlike existing methods that use taut steel wires and pads attached to the back of the folding screen for reinforcement, this invention ensures the stability of each vertical column of screens under strong winds, avoiding severe mutual wear and ensuring the lifespan of the screens. Furthermore, by locking and fixing four adjacent screens using two locking rods on the locking block, this invention ensures the stability of the folding screen while eliminating the need for multiple sets of stabilizing structures on the back of the folding screen, simplifying the reinforcement measures and saving on reinforcement costs.

[0017] The magnetic block is used to attract and guide the card block, ensuring that the card block drives the locking rod to insert into the corresponding locking ring. This ensures the docking effect between the locking rod and the locking ring and avoids the locking rod and the locking ring failing to dock, which would affect the fixation of the screen. By setting the rear of the slide rail to be bent downwards, the connecting rod drives all the folded screens to stack in a W shape into the storage cavity. This distributes the weight of the folded screens to each screen connection point, preventing some screens from being damaged due to excessive pressure and enhancing the protection of the folded screens. The limiting rod is inserted into the retaining ring at the bottom of the screen to limit the retaining ring, thereby fixing the screen after it is stored, reducing the screen from shaking during transportation, and enhancing the protection of the screen after it is stored. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first perspective three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the second perspective three-dimensional structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the electric scissor lift, limiting belt, locking block and winding assembly of the present invention; Figure 4This is a three-dimensional structural diagram of the combination of the retaining ring, limiting band, retaining block, magnetic block, adjustment component and winding component of the present invention; Figure 5 for Figure 4 Enlarged view of area A in the image; Figure 6 for Figure 4 Enlarged view of area B in the image; Figure 7 This is a schematic diagram of the three-dimensional structure of the combination of the retaining ring, limiting band, retaining block, magnetic block and winding roller of the present invention; Figure 8 This is a three-dimensional structural diagram of the combination of the base, protective pad, limiting block and partition system of the present invention; Figure 9 This is a diagram showing the horizontal stacking state of the screens according to the present invention; Figure 10 This is a diagram showing the electric scissor lift and the screen in a folded and stowed state according to the present invention. Figure 11 This is a state diagram of the protective screen of the separator pad according to the present invention.

[0019] The components are: 1-base, 1001-storage cavity, 2-electric scissor lift, 2001-connecting frame, 3-screen, 4-ring, 5-limiting belt, 6-block, 6001-stopping rod, 7-magnetic block, 101-slide rail, 102-electric slider, 103-connecting rod, 201-telescopic drive component one, 202-motor, 203-rewinding roller, 301-protective pad, 30101-limiting rod, 302-interlayer pad, 303-limiting block, 30301-avoidance groove, 304-telescopic drive component two, 401-cover plate, 402-separator pad. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0021] Example 1, such as Figures 1-11As shown, an audiovisual device for health education includes a base 1, an electric scissor lift 2, and a screen 3; two symmetrically arranged electric scissor lifts 2 are provided on the upper side of the base 1; a connecting frame 2001 is connected to the end of all electric scissor lifts 2 away from the base 1; a plurality of screens 3 arranged in a rectangular array together constitute a folding screen; two adjacent screens 3 in each longitudinal direction are rotatably connected; the lower end of the folding screen is rotatably connected to the base 1. It also includes an adjustment assembly, retaining rings 4, a winding assembly, limiting bands 5, locking blocks 6, and magnetic blocks 7; the connecting frame 2001 is equipped with an adjustment assembly; each of the four corners on the back side of each screen 3 is rotatably connected to a retaining ring 4 via a torsion spring; the base 1 and the connecting frame 2001 are jointly connected to a winding assembly; the winding assembly is connected to several limiting bands 5; the limiting bands 5 are nylon ropes; each limiting band 5 is located between two longitudinally adjacent columns of screens 3; each limiting band 5 is detachably connected to several locking blocks 6; each locking block 6 is equipped with two symmetrically arranged locking rods 6001; each screen 3 has two symmetrically arranged magnetic blocks 7 on its back side; each locking block 6 is made of magnetic metal.

[0022] In the aforementioned audiovisual equipment for health education, the adjustment components include a slide rail 101, an electric slider 102, and a connecting rod 103; two symmetrically arranged slide rails 101 are fixedly connected to the connecting frame 2001; the rear of each slide rail 101 is bent downwards; a storage cavity 1001 is provided on the front side of the base 1; an electric slider 102 is slidably connected to each slide rail 101; all electric sliders 102 are fixedly connected to a connecting rod 103; the connecting rod 103 is rotatably connected to the upper end of the folding screen.

[0023] In the aforementioned audiovisual equipment for health education, the take-up assembly includes a telescopic drive component 201, a motor 202, and a take-up roller 203; two symmetrically arranged telescopic drive components 201 are fixedly mounted on the base 1, and each telescopic drive component 201 is an electric push rod; two symmetrically arranged telescopic drive components 201 are also fixedly mounted on the connecting frame 2001; a motor 202 is fixedly mounted at the telescopic end of each telescopic drive component 201; a take-up roller 203 is fixedly mounted at the output end of the motor 202 on the base 1 and the connecting frame 2001 respectively; and both ends of each limiting band 5 are fixedly mounted to the corresponding take-up roller 203.

[0024] The upper end of each locking rod 6001 is designed to be arc-shaped, so that the locking rod 6001 can be inserted into the locking ring 4.

[0025] Each magnetic block 7 is shaped like the number 7. The lower part of the 7-shaped magnetic block 7 is used to attach and reinforce the two adjacent screens 3, thereby enhancing the reinforcement effect of the foldable screen.

[0026] The aforementioned audiovisual equipment for health education also includes a protective pad 301, a limiting block 303, and a telescopic drive component 304; two symmetrically arranged telescopic drive components 304 are fixedly connected to the storage cavity 1001, and the telescopic drive component 304 is an electric push rod; the protective pad 301 is fixedly connected to the telescopic ends of all the telescopic drive components 304; several limiting blocks 303 are fixedly connected to the upper side of the protective pad 301; the limiting blocks 303 are made of hard rubber; and the upper end of each limiting block 303 is set in an arc shape.

[0027] The upper side of the protective pad 301 is provided with several limiting rods 30101; the limiting rods 30101 are made of hard rubber material, which ensures the fixing effect of the screen 3 and prevents the screen 3 from being damaged by hard collision with the limiting rods 30101; each limiting block 303 is provided with several clearance grooves 30301; each limiting rod 30101 is located in the corresponding clearance groove 30301.

[0028] Each limiting block 303 has several magnetic clasps on its rear side. During the storage process, the folding screen is attracted to the magnetic block 7 by the magnetic clasps, which helps to guide the locking ring 4 to dock with the limiting rod 30101.

[0029] The aforementioned audiovisual equipment for health education also includes a sandwich pad 302; a sandwich pad 302 is fixedly connected between each pair of vertically adjacent screens 3.

[0030] In its initial state, the pop-up folding screen appears as follows: Figure 10 The folded state shown indicates that when using the lift-up folding screen outdoors for health education and promotion, the electric scissor lift 2 will raise the connecting frame 2001 and other parts. Figure 1 As shown, the foldable screen is stretched out from its folded state. In its initial state, as... Figure 10As shown, the telescopic drive unit 201 is in a retracted state. While the connecting frame 2001 unfolds the folding screen, based on a left-to-right view, the output of the upper motor 202 drives the take-up roller 203 to rotate clockwise, causing the upper take-up roller 203 to unwind the limiting band 5. The limiting band 5 unfolds as the connecting frame 2001 rises. After all screens 3 and limiting bands 5 are unfolded, all telescopic drive units 201 are controlled to move the motor 202 and take-up roller 203 forward, causing the limiting band 5 and the locking block 6 to adhere to the rear of the folding screen, and ensuring that each locking rod 6001 is directly below the corresponding locking ring 4. Then, based on a left-to-right view, all motors 2001 are controlled to... The output end of 2 rotates counterclockwise, causing the upper winding roller 203 to rotate counterclockwise to wind up the limiting belt 5, and the lower winding roller 203 to rotate counterclockwise to unwind the limiting belt 5. The limiting belt 5 drives the locking block 6 to move upward, causing the locking block 6 to drive the locking rod 6001 to rise and insert into the corresponding two locking rings 4. It should be noted that during the process of the limiting belt 5 driving the locking block 6 to move, the limiting belt 5 is always stretched taut by the winding roller 203. When there is wind, the locking rod 6001 on the locking block 6 is inserted into the corresponding locking ring 4 to limit and reinforce the rear side of the adjacent screens 3, reduce the swaying amplitude of the folding screen when affected by wind, and prevent the screens 3 from rotating and bending, which would affect the viewing effect.

[0031] Meanwhile, since each limiting band 5 is located between two adjacent columns of screens 3 in the longitudinal direction, and the retaining rings 4 are distributed in a rectangular array at the four corners of the screens 3, the two retaining rods 6001 on the same retaining block 6 can not only retain and fix the vertically adjacent screens 3, but also retain and fix the horizontally adjacent screens 3. That is, the two retaining rods 6001 on the same retaining block 6 can be used to retain and fix four adjacent screens 3, preventing mutual wear between each column of screens 3 in the longitudinal direction, thus enhancing the protection effect of the equipment. This is different from the existing method of using straight steel wire, gaskets and folds. The invention reinforces the folding screen by attaching it to the back side. This method of fixing the folding screen ensures the stability of each column of screens 3 in strong winds, preventing severe mutual wear between the columns of screens 3 and ensuring the lifespan of the screens 3. Furthermore, the invention uses two locking rods 6001 on the same locking block 6 to lock and fix four adjacent screens 3. While ensuring the stability of the folding screen, it differs from existing methods by eliminating the need for multiple sets of stabilizing structures on the back side of the folding screen, simplifying the reinforcement measures for the folding screen and saving reinforcement costs.

[0032] Furthermore, when the limiting band 5 drives the card block 6 to adhere to the back of the folding screen, and the limiting band 5 drives the card block 6 to move upward, so that the card block 6 drives the locking rod 6001 to rise and insert into the corresponding locking ring 4, the magnetic block 7 attracts and guides the card block 6 to ensure that the card block 6 drives the locking rod 6001 to insert into the corresponding locking ring 4. This ensures the docking effect between the locking rod 6001 and the locking ring 4 and avoids the locking rod 6001 failing to dock with the locking ring 4, which would affect the fixation of the screen 3.

[0033] After the folding screen is unfolded, the lower part of the 7-shaped magnetic block 7 is used to attach and reinforce the two adjacent screens 3 on the left and right sides, which enhances the reinforcement effect of the folding screen, further reduces the swaying amplitude of the folding screen when affected by wind, prevents mutual wear between the vertical columns of screens 3, and enhances the protection effect of the device.

[0034] Furthermore, considering that the lift-up folding screens are stacked after storage, the bottom screen 3 is subjected to greater pressure and is easily damaged, especially during transportation, where the screens at the bottom are prone to damage due to vibration. Therefore, when folding the lift-up folding screen after use, based on a left-to-right view, all motors 202 are controlled to rotate clockwise synchronously. This causes the upper winding roller 203 to rotate clockwise to unwind the limit belt 5, while the lower winding roller 203 rotates clockwise to wind the limit belt 5. The limit belt 5 drives the locking block 6 downwards, causing the locking block 6 to disengage the locking rod 6001 from the locking ring 4, releasing the restriction on the folding screen. Subsequently, all telescopic drive components 201 are controlled to drive the motors 202 and winding rollers 203 to rotate clockwise. The retractor moves backward, causing the take-up roller 203 to move the limiting belt 5 and the locking block 6 away from the folding screen. Once the limiting belt 5 disengages from the folding screen, the electric scissor lift 2 controls the connecting frame 2001 and the upper part of the folding screen to begin descending, folding the unfolded folding screen for storage. It should be noted that since each locking ring 4 is connected to the screen 3 via a torsion spring, when two adjacent screens 3 rotate towards each other to fold, the locking rings 4 press against each other, rotating towards the corresponding screen 3 for storage, avoiding interference with the normal folding and storage of the screens 3. Simultaneously, while the connecting frame 2001 folds and stores the screens, using a left-to-right view as a reference, the output end of the motor 202 on the upper side drives the take-up roller 203 to rotate counterclockwise, winding up the limiting belt 5. After all screens 3 are folded, all screens 3 are now in a... Figure 9As shown in the horizontal stacking state, the electric slider 102 then drives the connecting rod 103 to move backward, causing the connecting rod 103 to move the upper end of the horizontally stacked folding screens backward. Simultaneously, the bottommost screen 3 rotates downward on the connecting rod 103, causing the rear of the folding screen to rotate into the storage cavity 1001. When the electric slider 102 moves the connecting rod 103 to the rear of the slide rail 101, the rear of the slide rail 101 is bent downward, causing the electric slider 102 to move the connecting rod 103 downward, thus moving the upper end of the folding screen into the storage cavity 1001. During this process, the stacked folding screens unfold into a W shape as the electric slider 102 moves, combined with… Figure 11 This understanding allows all the folded screens 3 to be stacked in a W-shape into the storage cavity 1001, so that the weight of the folded screen after folding and storage is distributed to the connection points of each screen 3, preventing some screens 3 from being damaged due to excessive pressure, and enhancing the protection effect of the folded and stored screens 3.

[0035] Furthermore, considering that during subsequent transport and storage of the lift-up folding screen, the screen 3 may be damaged due to shaking and vibration during transport, potentially colliding with the bottom of the storage cavity 1001. Therefore, after the folding screen is stored in the storage cavity 1001, the telescopic drive component 304 is controlled to raise the protective pad 301 to fit against the bottom of the folding screen. The protective pad 301 provides cushioning protection for the bottom of the folding screen, preventing the screen 3 from colliding with the bottom of the storage cavity 1001 due to shaking and vibration, reducing the possibility of damage to the screen 3, and enhancing the protection effect for the folding screen.

[0036] Furthermore, as the foldable screen gradually retracts into the storage cavity 1001, such as Figure 10 As shown, the retaining ring 4 located at the bottom of the screen 3 is in an unfolded state without being affected by external force. When the protective pad 301 rises to fit against the bottom of the folding screen, the limiting rod 30101 is inserted into the retaining ring 4 at the bottom of the screen 3 as the protective pad 301 rises, limiting the retaining ring 4, thereby limiting and fixing the screen 3 after storage, reducing the shaking of the screen 3 during transportation, and enhancing the protection effect of the screen 3 after storage.

[0037] Furthermore, when the protective pad 301 rises to fit against the bottom of the folding screen, the limiting block 303 also rises along with the protective pad 301. During this process, the limiting block 303 guides the folding screen and causes the retaining ring 4 to move along the clearance groove 30301 towards the limiting rod 30101, ensuring that the retaining ring 4 at the bottom of the folding screen is connected to the limiting rod 30101. At the same time, the limiting block 303 engages between the folding screens after storage, limiting and protecting the folding screens and preventing the screen 3 from shaking during transportation, further enhancing the protection effect on the stored screen 3.

[0038] When the protective pad 301 rises to fit the bottom of the folding screen, the magnetic suction piece on the back of the limiting block 303 attracts and guides the adjacent magnetic suction block 7, ensuring that the limiting rod 30101 is inserted into the retaining ring 4 at the bottom of the screen 3, thus ensuring the docking effect between the limiting rod 30101 and the retaining ring 4.

[0039] It is also considered that when the lift-up folding screen is unfolded and used, in strong winds, the screen 3 can be reinforced by the limiting band 5 and the clip 6. At the same time, the interlayer pad 302 between two adjacent screens 3 can transform the hard connection between the two adjacent screens 3 into a soft connection, providing a buffer space between the screens 3 and preventing the connection between the unfolded screens 3 from twisting and being damaged by strong winds, thus enhancing the protection of the unfolded screens 3.

[0040] Example 2, based on Example 1, such as Figure 1 and Figures 8-11 As shown, the audiovisual equipment for health education also includes a partition system, which includes a cover plate 401 and partition pads 402; the cover plate 401 is rotatably connected to the front side of the base 1; and several partition pads 402 are fixedly connected to the cover plate 401.

[0041] After the folding screen is stored in the storage cavity 1001, the staff rotates the cover plate 401 upwards to close it on the upper side of the storage cavity 1001, isolating external dust and impurities. At the same time, the cover plate 401 drives the partition pad 402 to be inserted between the stored folding screens, limiting and protecting the upper part of the stored folding screens. Together with the limiting block 303, it limits and protects the lower part of the folding screens, completely preventing the screen 3 from shifting or being bumped during transportation, thus enhancing the protection effect of the folding screen.

[0042] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. An audiovisual device for health education, comprising a base (1), an electric scissor lift (2), and a screen (3); two electric scissor lifts (2) are provided on the upper side of the base (1); all the electric scissor lifts (2) are connected to a connecting frame (2001) at the end away from the base (1); a plurality of screens (3) arranged in a rectangular array together constitute a folding screen; the lower end of the folding screen is rotatably connected to the base (1); characterized in that, It also includes an adjustment component, a retaining ring (4), a winding component, a limiting band (5), a locking block (6), and a magnetic block (7); the connecting frame (2001) is provided with an adjustment component for adjusting the state of the folding screen; each screen (3) has a retaining ring (4) rotatably connected to the four corners of its back side; the base (1) and the connecting frame (2001) are connected together to the winding component; the winding component is connected to several limiting bands (5); each limiting band (5) is located between two vertically adjacent columns of screens (3); each limiting band (5) is connected to several locking blocks (6) for fixing the screen (3); each locking block (6) is provided with two locking rods (6001) for locking into the retaining ring (4); each screen (3) has two magnetic blocks (7) for guiding the locking blocks (6); each locking block (6) is made of magnetic metal.

2. The audiovisual device for health education according to claim 1, characterized in that, The adjustment assembly includes a slide rail (101), an electric slider (102), and a connecting rod (103); two slide rails (101) are fixedly connected to the connecting frame (2001); the rear of each slide rail (101) is set to be bent downwards; a storage cavity (1001) for storing the folding screen is provided on the front side of the base (1); an electric slider (102) is slidably connected to each slide rail (101); all electric sliders (102) are fixedly connected to a connecting rod (103); the connecting rod (103) is rotatably connected to the upper end of the folding screen.

3. The audiovisual device for health education according to claim 1, characterized in that, The winding assembly includes a telescopic drive component 1 (201), a motor (202), and a winding roller (203); two telescopic drive components 1 (201) are fixedly connected to the base (1); two telescopic drive components 1 (201) are also fixedly connected to the connecting frame (2001); a motor (202) is fixedly connected to the telescopic end of each telescopic drive component 1 (201); a winding roller (203) is fixedly connected to the output end of the motor (202) on the base (1) and the connecting frame (2001), and the winding roller (203) is used to wind up the limiting belt (5); the two ends of each limiting belt (5) are fixedly connected to the corresponding winding roller (203).

4. An audiovisual device for health education according to claim 1, characterized in that, The upper end of each locking lever (6001) is set in an arc shape.

5. An audiovisual device for health education according to claim 1, characterized in that, Each magnetic block (7) is shaped like the number 7.

6. An audiovisual device for health education according to claim 2, characterized in that, It also includes a protective pad (301), a limiting block (303), and a telescopic drive component two (304); several telescopic drive components two (304) are fixedly connected in the storage cavity (1001); a protective pad (301) for protecting the folding screen is fixedly connected to the telescopic end of all telescopic drive components two (304); several limiting blocks (303) for limiting the folding screen are fixedly connected to the upper side of the protective pad (301); the limiting blocks (303) are made of hard rubber; the upper end of each limiting block (303) is set to be arc-shaped.

7. An audiovisual device for health education according to claim 6, characterized in that, The upper side of the protective pad (301) is provided with several limiting rods (30101) for limiting the screen (3); the limiting rods (30101) are made of hard rubber; each limiting block (303) has several clearance grooves (30301); each limiting rod (30101) is located in the corresponding clearance groove (30301).

8. An audiovisual device for health education according to claim 7, characterized in that, Each limit block (303) has several magnetic locating pieces on its rear side.

9. An audiovisual device for health education according to claim 1, characterized in that, It also includes a sandwich pad (302); a sandwich pad (302) for protecting the screen (3) is fixed between each pair of adjacent screens (3) in each longitudinal direction.

10. An audiovisual device for health education according to claim 1, characterized in that, It also includes a partition system, which includes a cover plate (401) and partition pads (402); the cover plate (401) is rotatably connected to the front side of the base (1); and a number of partition pads (402) for separating the protective screen (3) are fixed on the cover plate (401).

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