Electronic device shielding apparatus

Abstract

The application relates to an electronic equipment shielding device, which comprises a first storage box and a second storage box arranged adjacently, a motion module is arranged in the first storage box, and an electronic equipment storage module is arranged in the second storage box; the motion module comprises a pitching angle adjusting assembly and a horizontal reciprocating adjusting assembly, and the pitching angle adjusting assembly is located at the upper portion of the horizontal reciprocating adjusting assembly. The first storage box and the second storage box are independent of each other, the electromagnetic shielding function and the electronic equipment safe storage function are integrated, the pitching angle adjusting assembly and the horizontal reciprocating adjusting assembly are arranged simultaneously, the two sets of assemblies are arranged in layers in an up-down mode and move independently, the shielding device can be flexibly adjusted in double-axis angles, different space structures can be effectively adapted, shielding dead angles can be eliminated, the overall layout is compact, the function division is clear, and the applicability is stronger.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic shielding technology, and specifically relates to a shielding device for electronic equipment. Background Technology

[0002] With increasingly stringent requirements for information security and management of classified locations, wireless signal shielding and centralized control of electronic devices have become essential security measures in scenarios such as important meetings, classified offices, and examination supervision. Existing electromagnetic shielding devices mostly employ shielding cabinets, shielding bags, or fixed-installation conference room shielding systems; however, these devices generally suffer from the following technical deficiencies in practical use:

[0003] ① Fixed shielding angle, poor scene adaptability: Traditional electromagnetic shielding devices mostly adopt fixed installation or fixed angle structure, which cannot flexibly adjust the shielding direction and coverage area according to different spatial structures such as conference rooms, lecture halls, and multi-functional halls. The pitch angle of the shielding device is not adjustable, which easily creates a shielding blind zone in the vertical direction; in the horizontal direction, it can only radiate at fixed points and cannot achieve uniform coverage across the entire area, making it difficult to meet the shielding requirements of complex spaces.

[0004] ② Limited shielding coverage and lack of dynamic scanning capability: Conventional shielding devices operate in a static mode, with a fixed effective shielding area for a single device. This makes it difficult to achieve comprehensive coverage in large spaces, long strips, or irregularly shaped layouts. Deploying multiple devices not only increases costs and energy consumption but also easily leads to signal superposition interference and makes coordinated dynamic scanning impossible, resulting in unsatisfactory shielding efficiency and effectiveness.

[0005] ③ The reciprocating swing mechanism relies on electronic control and has insufficient reliability: Most existing shielding devices with swing function use motor forward and reverse rotation, sensor limit or program control to achieve reciprocating motion, which is complex in structure and high in cost, and is prone to control failure in long-term continuous operation.

[0006] ④ Insufficient storage isolation and security protection capabilities for electronic devices: Existing electronic device storage cabinets only have overall shielding functions. When devices are stored together, they can still connect to each other through near-field communication methods such as Bluetooth, NFC (Near Field Communication), and infrared, posing a risk of information exchange and leakage. At the same time, no physical protection is set up for recording and other activities, and it is impossible to achieve dual security protection of electromagnetic shielding and acoustic isolation.

[0007] ⑤ Low level of integration and automation: Existing shielding devices and equipment storage cabinets are mostly independent and separate structures, which occupy a lot of space and are complicated to deploy; shielding modules lack automatic lifting and storage protection design, and shielding hatches are mostly manually opened and closed, which is inconvenient to operate and has poor protection, making it difficult to achieve the integrated requirements of one-click deployment, automatic shielding and centralized management.

[0008] Patent publication number CN114401606A discloses an electromagnetic shielding device for electronic equipment. This invention achieves reciprocating oscillation shielding and synchronous airflow heat dissipation of the electromagnetic shielding device body within a fan-shaped area through the cooperation of a reciprocating push rod motor, rack and pinion, and gears. Although it solves the problems of many weak points and limited coverage of traditional fixed electromagnetic shielding devices, this invention mainly focuses on motor-driven reciprocating oscillation and integrated heat dissipation protection. It does not consider the usage requirements of pitch angle adjustment, dual-axis adaptive shielding, and purely mechanical limit automatic reversing in different venue spaces. It still has technical problems such as reliance on electrically controlled reciprocating drive, complex structure and insufficient reliability, inability to achieve pitch angle adjustment, and lack of integrated safe isolation and storage of electronic equipment.

[0009] In summary, existing technologies cannot simultaneously meet core requirements such as dual-axis angle adjustment, dynamic reciprocating scanning shielding, and independent isolated storage of electronic devices, making it difficult to meet the usage requirements in high-security scenarios. Therefore, there is significant room for improvement. Summary of the Invention

[0010] The present invention aims to solve the problem of the current lack of an electromagnetic shielding device for non-fixed electronic devices that can be applied to multiple scenarios.

[0011] The present invention solves the above-mentioned technical problems through the following technical means: An electronic device shielding device includes a first storage box and a second storage box arranged adjacent to each other. A motion module is installed in the first storage box, and an electronic device storage module is installed in the second storage box. The motion module includes a pitch angle adjustment component and a horizontal reciprocating adjustment component. The pitch angle adjustment component is located above the horizontal reciprocating adjustment component. The pitch angle adjustment component includes an angle adjustment drive mechanism, a mounting shaft, and an adjustment frame. The lower end of the adjustment frame is fixedly connected to the mounting shaft, and the mounting shaft is connected to the output end of the angle adjustment drive mechanism. The horizontal reciprocating adjustment component includes a fixed frame, a mounting base, and a drive shaft. The lower end of the mounting base is fixedly connected to the drive shaft and rotatably connected to the fixed frame via the drive shaft.

[0012] By setting the device as a first storage box and a second storage box that are independent of each other, the electromagnetic shielding function and the safe storage function of electronic equipment are integrated into one. At the same time, a pitch angle adjustment component and a horizontal reciprocating adjustment component are set up. The two sets of components are arranged in layers and move independently of each other, which can realize flexible adjustment of the shielding angle on both axes, effectively adapt to different spatial structures, eliminate shielding dead angles, and have a compact overall layout, clear functional division, and stronger applicability.

[0013] Preferably, the angle adjustment drive mechanism includes a worm, a worm wheel, and a worm drive motor. The worm is rotatably mounted on the mounting base and perpendicular to the mounting shaft. The worm drive motor is mounted on the mounting base and is connected to the worm drive. The worm wheel meshes with the worm and is fixedly connected to the mounting shaft.

[0014] The pitch angle adjustment is achieved by using a worm gear drive, which is smooth, has strong self-locking, and high adjustment accuracy, and can stably maintain the pitch angle of the shield. The motor drive method is simple and reliable, and can realize electric angle adjustment without manual operation, thus improving the ease of use of the device.

[0015] Preferably, the horizontal reciprocating adjustment assembly further includes a positioning system, which includes a positioning frame, a compression spring, a first slide rod, a second slide rod, and a protrusion; the first slide rod and the second slide rod are located on the upper part of the positioning frame, the compression spring is disposed between the first slide rod and the second slide rod, and the protrusion is disposed on the upper end of the second slide rod and abuts against the adjustment frame.

[0016] The positioning frame, slide bar, compression spring and protrusion form an elastic clamping positioning structure, which can continuously apply preload to the adjusting frame, so that the worm gear always keeps tightly meshed, effectively eliminating transmission gap, reducing shielding shake, improving the stability of the shielding area, and ensuring uniform and reliable shielding effect.

[0017] Preferably, the horizontal reciprocating adjustment assembly further includes a drive system, which includes a first sector gear, a second sector gear, a first drive gear, and a second drive gear; the first sector gear is fixedly connected to the drive shaft, and the second sector gear is rotatably connected to the drive shaft; the first drive gear and the second drive gear are disposed at the lower end of the fixed frame and are coaxially and in reverse arrangement; the first drive gear and the first sector gear cooperate to form a first gear pair; the second drive gear and the second sector gear cooperate to form a second gear pair.

[0018] The system employs a combination of double sector gears and a coaxial reversing drive gear to form two sets of alternating gear pairs. This enables the shield to swing back and forth, expanding the horizontal shielding coverage. The two sets of gear pairs can be switched independently, eliminating the need for frequent forward and reverse rotation of the motor. The system is simple in structure, stable in motion, and more reliable.

[0019] Preferably, the drive system further includes drive rod I, drive rod II, a first bevel gear, a second bevel gear, and a third bevel gear; drive rod I is rotatably disposed at the lower end of the fixed frame, drive rod II is rotatably disposed at the upper part of drive rod I, and drive rod I and drive rod II are axially limited; the first bevel gear and the second bevel gear are respectively disposed corresponding to drive rod I and drive rod II, and the first bevel gear and the second bevel gear mesh together with a third bevel gear, and the third bevel gear is rotatably disposed on the fixed frame.

[0020] Preferably, the drive system further includes a drive sleeve I, a drive sleeve II, a spline cavity, a spline shaft I, and a spline shaft II; the drive sleeve I and the drive sleeve II are respectively connected to the first drive gear and the second drive gear, and the drive sleeve I and the drive sleeve II are rotatably connected and axially limited; a spline cavity is provided at the far ends of the drive sleeve I and the drive sleeve II, a spline shaft I that mates with the spline cavity of the drive sleeve I is provided on the drive rod I, and a spline shaft II that mates with the spline cavity of the drive sleeve II is provided on the drive rod II.

[0021] The structure of drive sleeve and spline shaft is adopted to achieve reliable power transmission and axial sliding compatibility. It can not only ensure stable torque output, but also provide axial displacement space for gear pair switching. The transmission is reliable and the switching is smooth, which improves the stability and service life of the reciprocating reversing mechanism.

[0022] Preferably, the first storage box further includes a control component, which is connected to the first drive gear and the second drive gear. The control component includes a control ring, a guide frame, guide rod I, guide rod II, and an annular guide groove. The control ring is rotatably mounted on the drive sleeve II. The guide frame is fixedly mounted at the lower end of the fixed frame, and a sliding groove is provided on the guide frame along the vertical direction. One side of the control ring has guide rod I that slides into the sliding groove, and the other side of the control ring has guide rod II. The annular guide groove is located between the first sector gear and the second sector gear, and guide rod II slides into the annular guide groove.

[0023] By cooperating with the control ring, guide rod and annular guide groove, the pure mechanical automatic reversing is achieved. No sensors or electronic control programs are required. The gear pair can be automatically switched when the gear is swung to the limit position. The structure is simple, the cost is low and the reliability is extremely high, making it suitable for long-term continuous operation.

[0024] Preferably, the annular guide groove includes a first U-shaped groove, a second U-shaped groove, a first spring plate, and a second spring plate; the first U-shaped groove and the second U-shaped groove are respectively fixedly disposed on the first sector gear and the second sector gear, and the first U-shaped groove and the second U-shaped groove are staggered to form an annular guide groove; the first spring plate and the second spring plate are respectively disposed at both ends of the annular guide groove, the first spring plate cooperates with the guide rod II to drive the guide rod II from the lower end of the annular guide groove to the upper end, and the second spring plate cooperates with the guide rod II to drive the guide rod II from the upper end of the annular guide groove to the lower end; when the guide rod II is located at the upper end of the annular guide groove, the first drive gear meshes with the first sector gear; when the guide rod II is located at the lower end of the annular guide groove, the second drive gear meshes with the second sector gear.

[0025] An annular guide groove is formed by splicing interlaced U-shaped slides, which, together with spring plates, enables the guide rod to automatically jump up and down. The two sets of gear pairs are precisely controlled to mesh alternately, realizing the automatic reversal of the reciprocating swing. At the same time, the swing range can be changed by adjusting the included angle of the sector gears to adapt to the shielding requirements of different scenarios, making it more flexible.

[0026] Preferably, the first storage box further includes a lifting and opening mechanism, which includes a folding door, a push rod, a horizontal slide rail, a lifting drive mechanism, a linear motor I, and a linear motor II. The folding door includes two symmetrically arranged on the upper wall of the first storage box, each folding door including a hinge shaft and two door panels hinged to the hinge shaft. The push rod is slidably disposed on the wall of the first storage box in a vertical direction, and the horizontal slide rail is provided on the push rod. One end of the hinge shaft is slidably disposed within the horizontal slide rail. The push rod is electrically connected to the linear motor II. The lifting drive mechanism is located between the lower end of the fixed frame and the second storage box, and the lifting drive mechanism is electrically connected to the linear motor I.

[0027] It integrates an automatic folding door and a lifting mechanism, enabling the shielding module to automatically extend and retract, providing good protection when stored and fully unfolded when in use; the entire process is electrically controlled, requiring no manual operation, improving the automation level of the device and making it safer and more convenient to use.

[0028] Preferably, the second storage box has a second opening at its rear end, and the second opening has an openable shielding door. The shielding door and the second storage box cooperate to form an electronic device storage module. The electronic device storage module includes a plurality of metal compartments disposed in the second storage box. One end of each metal compartment is an open end, and a metal shielding plate is hinged to the open end. The inner wall of the second storage box is also provided with a sound insulation layer.

[0029] The advantages of this invention are: (1) Dual-axis independent adjustment, shielding without dead angles: This application adopts a dual-axis drive structure with independent pitch angle adjustment and horizontal reciprocating swing. The pitch direction can be adapted to complex scenarios such as tiered conference rooms and spaces with varying heights, avoiding vertical shielding blind spots; the horizontal direction realizes automatic reciprocating scanning shielding, greatly expanding the effective coverage area, making signal shielding more uniform and without weak points. Compared with traditional shielding devices with fixed angle or single-direction adjustment, this application can flexibly adapt to various meeting room layouts and spatial structures, significantly improving shielding efficiency and adaptability; (2) Integrated shielding and storage: This application integrates a dynamic electromagnetic shielder and an electronic device security storage module into the same device, realizing the dual functions of external full-area signal shielding and internal centralized control of equipment. The equipment storage compartment adopts an independent metal grid + metal shielding plate isolation design to block near-field communication such as Bluetooth and NFC; the inner wall is added with a sound insulation layer to physically suppress recording behavior, forming a dual security guarantee of electromagnetic shielding and acoustic protection, solving the problem of insufficient isolation and easy information leakage of traditional equipment storage cabinets, and is more suitable for use in high-confidential meetings and confidential places; (3) Horizontal reciprocating without complex electrical components: This application achieves automatic, non-electrically controlled commutation when the shield reaches the left and right limit positions through a purely mechanical structure of double sector gears, coaxial reverse drive gears, annular guide grooves, and spring plates. It does not rely on frequent forward and reverse rotation of the motor, sensor detection, or program control, effectively reducing the risk of circuit failure. The overall mechanical transmission is compact, the force is reasonable, and the operation is stable, which simplifies the drive control logic and improves the stability, durability, and environmental adaptability of the device under long-term continuous operation. (4) Convenient storage: This application realizes fully automated control of the electromagnetic shielding device’s automatic lifting, hatch folding door’s automatic opening and closing, pitch angle electric adjustment, and horizontal swing automatic operation. Deployment and storage are quick and easy, without manual operation. At the same time, the electromagnetic shielding device is completely built-in in the storage state, which can effectively prevent dust and impact and protect the core components. The overall structure is compact and has high space utilization, combining ease of use, security and practicality, and is more in line with the needs of modern and intelligent security management. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an electronic device shielding device according to the first embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the first storage box of an electronic device shielding device according to the first embodiment of the present invention; Figure 3 This is a schematic diagram of the motion module structure of an electronic device shielding device according to the first embodiment of the present invention; Figure 4 This is a bottom view of the motion module of an electronic device shielding device according to the first embodiment of the present invention; Figure 5 This is a schematic diagram of the pitch angle adjustment component of an electronic device shielding device according to the first embodiment of the present invention; Figure 6 This is a schematic diagram of a horizontal reciprocating adjustment component of an electronic device shielding device according to a first embodiment of the present invention; Figure 7 This is a partially enlarged schematic diagram of a horizontal reciprocating adjustment component of an electronic device shielding device according to a first embodiment of the present invention; Figure 8 This is a schematic diagram of the annular guide groove structure of an electronic device shielding device according to the first embodiment of the present invention; Figure 9 This is a partial schematic diagram of the second storage box of an electronic device shielding device according to the first embodiment of the present invention.

[0031] In the picture: 1. First storage box; 11. Lifting and opening mechanism; 111. First opening; 112. Folding door leaf; 113. Push rod; 114. Horizontal slide rail; 115. Linear motor II; 116. Lifting drive mechanism; 117. Linear motor I; 12. Pitch angle adjustment assembly; 121. Angle adjustment drive mechanism; 121a. Worm gear; 121b. Worm wheel; 121c. Worm gear drive motor; 122. Mounting shaft; 123. Adjusting frame; 13. Horizontal reciprocating adjustment assembly; 131. Fixing frame; 132. Mounting base; 133. Drive shaft; 134. Drive system; 134a. First sector gear; 134b. Second sector gear; 134c. First drive gear; 134d. 134e, Second drive gear; 134f, Drive rod I; 134g, Drive sleeve I; 134h, Drive sleeve II; 134i, First bevel gear; 134j, Second bevel gear; 134k, Third bevel gear; 135, Positioning system; 135a, Positioning frame; 135b, Compression spring; 135c, Protrusion; 135d, Insert rod; 135e, Slot; 14, Electromagnetic shield; 15, Control assembly; 151, Control ring; 152, Guide frame; 153, Guide rod I; 154, Guide rod II; 155, Annular guide groove; 155a, First U-shaped slide groove; 155b, Second U-shaped slide groove; 155c, First spring plate; 155d, Second spring plate; 2. Second storage box; 21. Second opening; 22. Shielding door; 23. Metal grid; 24. Metal shielding plate; 3. Vertical partitions. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0033] Example 1: This embodiment provides a shielding device for electronic devices. (See also...) Figures 1-5The electronic device shielding device is a cubic box with a vertical partition 3 inside, dividing the cubic box into a first storage box 1 and a second storage box 2. The first storage box 1 houses a lifting and opening mechanism 11, a motion module, an electromagnetic shield 14, and a control component 15. The second storage box 2 houses the electronic device storage module, whose motion module includes a pitch angle adjustment component 12 and a horizontal reciprocating adjustment component 13. The lifting and opening mechanism 11 is primarily responsible for the storage and lifting of the electromagnetic shield 14; automated storage significantly improves the convenience of the entire device. The motion module is mainly responsible for the multi-angle movement of the electromagnetic shield 14 in the horizontal and vertical directions. The electromagnetic shield 14 is primarily responsible for providing electromagnetic shielding to the target area. The control component, as an auxiliary component, ensures the smooth movement of the entire device.

[0034] See Figures 2-3 The lifting and opening mechanism 11 is mainly used to realize the automatic opening and closing of the first opening 111 at the upper end of the first storage box 1, as well as the overall lifting, unfolding and resetting of the electromagnetic shield 14. It includes the first opening 111, folding door 112, push rod 113, horizontal slide 114, linear motor II 115, lifting drive mechanism 116 and linear motor I 117.

[0035] For details, please refer to Figures 1-2 The first opening 111 is located on the upper surface of the first storage box 1, serving as a channel for the electromagnetic shield 14 to extend and retract. Two folding doors 112 are symmetrically arranged at the first opening 111. Each folding door 112 includes a hinge shaft and two door panels hinged to the hinge shaft. The two door panels can rotate relative to each other around the hinge shaft, enabling the folding doors 112 to open and close. A push rod 113 is slidably mounted vertically on the wall of the first storage box 1. The push rod 113 is driven by a linear motor II 115 to move vertically. A horizontal groove 114 is provided on the push rod 113, and one end of the hinge shaft of the folding door 112 is slidably mounted within the horizontal groove 114. When the linear motor II 115 drives the push rod 113 to move upward, the hinge shaft slides along the horizontal slide groove 114 and drives the folding door 112 to unfold outward, closing the first opening 111; when the linear motor II 115 drives the push rod 113 to move downward, the hinge shaft slides along the horizontal slide groove 114 and drives the folding door 112 to retract inward, fully opening the first opening 111 and providing a channel for the electromagnetic shield 14 to rise and fall.

[0036] For details, please refer to Figures 4-5The lifting drive mechanism 116 is located at the lower end of the fixed frame 131 and is driven by a linear motor I 117. When the linear motor I 117 is running, it drives the lifting drive mechanism 116 to extend upward, pushing the fixed frame 131, the pitch angle adjustment component 12, the horizontal reciprocating adjustment component 13, and the electromagnetic shield 14 upward as a whole, so that the electromagnetic shield 14 extends out of the first storage box 1 through the first opening 111 to perform shielding operations. When the linear motor I 117 is running in the reverse direction, the lifting drive mechanism 116 retracts downward, driving the electromagnetic shield 14 back into the first storage box 1 for storage. The lifting and opening mechanism 11 can realize the linkage control of the opening and closing of the first opening 111 and the lifting of the electromagnetic shield 14. The entire process is electrically automated, requiring no manual operation, and the unfolding and storage are smooth, significantly improving protection and ease of use.

[0037] See Figures 4-5 The motion module includes a pitch angle adjustment component 12 and a horizontal reciprocating adjustment component 13.

[0038] For details, please refer to Figures 4-5 The pitch angle adjustment component 12 is mounted on the mounting base 132 of the horizontal reciprocating adjustment component 13. It is used to achieve precise adjustment, stable positioning and anti-sway locking of the pitch angle of the electromagnetic shield 14 in the vertical plane. The overall structure consists of three parts: the angle adjustment drive mechanism 121, the mounting shaft 122 and the adjustment frame 123, which are coaxially coordinated and form an integrated transmission chain.

[0039] For details, please refer to Figures 3-5 The adjusting frame 123 serves as the direct supporting component of the electromagnetic shield 14. Its upper end is used to fix the electromagnetic shield 14, and its lower end is fixedly connected to the mounting shaft 122 to ensure that the adjusting frame 123 and the mounting shaft 122 maintain a rigid synchronous relationship without relative rotation or axial movement. This allows the rotational movement of the mounting shaft 122 to be completely and accurately transmitted to the adjusting frame 123 and the electromagnetic shield 14.

[0040] The mounting shaft 122 is horizontally inserted and rotatably mounted on the mounting base 132. The mounting shaft 122 and the mounting base 132 are rotated together to provide rotational support for pitch adjustment. A worm gear 121b is fixedly installed at the middle section of the mounting shaft 122. The worm gear 121b is coaxially fixed with the mounting shaft 122 and rotates synchronously with the mounting shaft 122.

[0041] The angle adjustment drive mechanism 121 includes a worm gear 121a, a worm wheel 121b, and a worm drive motor 121c. The worm drive motor 121c is fixedly mounted on a preset mounting position on the mounting base 132, and its output shaft is coaxially fixedly connected to the worm gear 121a to provide continuously controllable pitch adjustment power. The worm gear 121a is rotatably mounted on the mounting base 132, and its axis is spatially perpendicular to the axis of the mounting shaft 122, forming a standard worm gear transmission structure. The worm gear 121a and the worm wheel 121b maintain stable meshing, converting the rotational motion of the worm gear 121a into the rotational motion of the mounting shaft 122.

[0042] When adjusting the pitch angle, the worm drive motor 121c is energized and drives the worm 121a to rotate continuously. The worm 121a drives the worm wheel 121b to rotate slowly through meshing. The worm wheel 121b drives the mounting shaft 122 to rotate around the horizontal axis. The mounting shaft 122 further drives the adjustment frame 123 and the electromagnetic shield 14 to lift up or deflect down, so as to realize continuous, stable and stepless adjustment of the pitch angle to adapt to different shielding scenarios such as tiered conference rooms and spaces with height differences.

[0043] Meanwhile, the transmission engagement between the worm gear 121b and the worm 121a has a mechanical self-locking characteristic. After the worm drive motor 121c stops running, the electromagnetic shield 14 and the adjusting frame 123 cannot drive the worm 121a to rotate in the reverse direction by their own weight, so that the electromagnetic shield 14 can be stably maintained at the current adjustment angle without falling back or shaking. Combined with the continuous elastic pressing action of the compression spring 135b and the protrusion 135c on the adjusting frame 123 in the positioning system 135, the meshing gap between the worm gear 121b and the worm 121a can be further eliminated, significantly improving the pitch angle positioning accuracy and the stability during shielding operation.

[0044] For details, please refer to Figures 4-6 The horizontal reciprocating adjustment component 13 is fully assembled inside the first storage box 1, located below the pitch angle adjustment component 12. It is used to drive the pitch angle adjustment component 12 and the electromagnetic shield 14 to continuously reciprocate within a set angle in the horizontal direction (similar to the reciprocating swing of a monitoring pan-tilt unit), realizing full-range dynamic scanning shielding in the horizontal direction. At the same time, it works with the control component 15 to realize automatic reversal at extreme positions. This component mainly includes a fixed frame 131, a mounting base 132, a drive shaft 133, a drive system 134, and a positioning system 135. The components are arranged in layers, with continuous transmission and reliable movement.

[0045] For details, please refer to Figures 4-6The fixed frame 131 serves as the overall support base for the horizontal reciprocating adjustment component 13. The lower end of the fixed frame 131 is connected to the lifting drive mechanism 116, enabling overall lifting and lowering under the drive of the lifting and opening mechanism 11. A mounting base 132 is rotatably mounted above the fixed frame 131. The upper end of the mounting base 132 supports the pitch angle adjustment component 12, and its lower center is fixedly connected to the drive shaft 133, allowing it to rotate synchronously around the vertical axis with the drive shaft 133. The drive shaft 133 passes vertically through the fixed frame 131 and rotatably engages with it. The drive shaft 133 extends downwards to the lower end of the fixed frame 131 and connects to the drive system 134, transmitting power from the drive system 134 to the mounting base 132, thereby driving the upper pitch angle adjustment component 12 and the electromagnetic shield 14 to achieve horizontal swinging.

[0046] See Figures 6-7 The drive system 134 is the power source and transmission core for horizontal reciprocating motion, including a first sector gear 134a, a second sector gear 134b, a first drive gear 134c, a second drive gear 134d, drive rod I 134e, drive rod II 134f, drive sleeve I 134g, drive sleeve II 134h, a first bevel gear 134i, a second bevel gear 134j, and a third bevel gear 134k. Drive rod I 134e is rotatably mounted on the lower end of the fixed frame 131, and drive rod II 134f is coaxially rotatably mounted on the upper part of drive rod I 134e. The two are axially limited but can rotate relative to each other. A first bevel gear 134i is fixedly mounted on drive rod I 134e, and a second bevel gear 134j is fixedly mounted on drive rod II 134f. The first bevel gear 134i and the second bevel gear 134j mesh together with a third bevel gear 134k. The third bevel gear 134k is rotatably mounted on the fixed frame 131. The coaxial and opposite synchronous rotation of drive rod I 134e and drive rod II 134f is achieved through the meshing transmission of the bevel gear set.

[0047] The first drive gear 134c and the second drive gear 134d are respectively disposed at the lower end of the fixed frame 131, and are coaxially arranged and can rotate in opposite directions. The first drive gear 134c is fixedly connected to drive sleeve I 134g, and the second drive gear 134d is fixedly connected to drive sleeve II 134h. Drive sleeve I 134g and drive sleeve II 134h are rotatably connected and axially limited. The ends of drive sleeve I 134g and drive sleeve II 134h that are far apart from each other are provided with spline cavities. Drive rod I 134e is provided with a spline shaft I that mates with the spline cavity of drive sleeve I 134g, and drive rod II 134f is provided with a spline shaft II that mates with the spline cavity of drive sleeve II 134h. Power transmission is achieved through spline engagement, and drive sleeve I 134g and drive sleeve II 134h are allowed to move axially within a certain range to complete the switching action of the gear pair.

[0048] The lower end of the drive shaft 133 is fixedly connected to the first sector gear 134a, and the second sector gear 134b is rotatably connected to the drive shaft 133. The second sector gear 134b is provided with a rod 135d, and the drive shaft 133 is provided with several slots 135e that cooperate with the rod 135d. By cooperating with different slots 135e, the included angle between the first sector gear 134a and the second sector gear 134b can be adjusted, thereby changing the range of the horizontal reciprocating swing angle. The first drive gear 134c and the first sector gear 134a can mesh to form a first gear pair, and the second drive gear 134d and the second sector gear 134b can mesh to form a second gear pair. Under the action of the control component 15, the two gear pairs mesh alternately and drive alternately, so that the drive shaft 133 drives the mounting base 132 to perform a continuous reciprocating rotation of clockwise-counterclockwise-clockwise.

[0049] For details, please refer to Figure 5 The positioning system 135 includes a positioning frame 135a, a compression spring 135b, and a protrusion 135c. The positioning frame 135a is fixedly mounted on the mounting base 132. The positioning frame 135a is provided with a first slide rod and a second slide rod that are slidably engaged. A compression spring 135b is provided between the first slide rod and the second slide rod (damping material can also be added depending on the effect). A protrusion 135c is provided at the upper end of the second slide rod. The protrusion 135c is always elastically pressed against the adjusting frame 123 to eliminate the transmission gap of the pitch angle adjusting component 12 and ensure that the overall structure is stable, without shaking or swaying during horizontal reciprocating motion.

[0050] The horizontal reciprocating adjustment component 13 provides coaxial reverse power through the drive system 134, and works with the control component 15 to achieve pure mechanical automatic reversal. Without the need for sensors and complex electrical control, the electromagnetic shield 14 can stably reciprocate within a set horizontal angle, significantly expanding the shielding coverage area, eliminating shielding dead angles, and improving the overall shielding uniformity and reliability.

[0051] For details, please refer to Figure 1 The electromagnetic shield 14 is the actuator for shielding wireless signals in space. It is fixedly installed on the upper bearing surface of the adjustment frame 123 and moves synchronously with the pitch angle adjustment component 12 and the horizontal reciprocating adjustment component 13. It is used to shield mobile phone communication, Bluetooth, and Wi-Fi signals within a designated area. It interferes with and blocks wireless signals such as Fi and NFC, blocking wireless communication and information leakage of electronic devices at the source. It is suitable for various confidential scenarios such as conference rooms, classified places, and examination rooms.

[0052] The bottom of the electromagnetic shield 14 is rigidly fixed to the adjustment frame 123, ensuring that there is no relative displacement, loosening, or shaking between the electromagnetic shield 14 and the adjustment frame 123 when the adjustment frame 123 is tilted or swung horizontally, thus ensuring that the signal transmission direction and movement posture remain highly consistent. In operation, the electromagnetic shield 14 can achieve precise adjustment of its vertical tilt angle under the drive of the pitch angle adjustment component 12, adapting to different structural scenarios such as flat conference rooms, tiered classrooms, and spaces with varying elevations, avoiding shielding blind spots in the vertical direction; at the same time, under the drive of the horizontal reciprocating adjustment component 13, the electromagnetic shield 14 can continuously reciprocate within a set angle range around the vertical axis, so that the shielding signal uniformly covers the entire target area, greatly expanding the effective shielding range and eliminating shielding weaknesses and coverage dead angles caused by fixed-angle shielding. The movement of the electromagnetic shield 14 is driven by the pitch angle adjustment component 12 and the horizontal reciprocating adjustment component 13 in a coordinated manner. The two-axis movements are independent and do not interfere with each other. With the elastic clamping and anti-sway structure of the positioning system 135, the electromagnetic shield 14 maintains a stable posture in both moving and stationary states. The signal transmission direction is accurate and the shielding effect is continuous and reliable, meeting the requirements of high-security locations for full-area, stable, and blind-angle electromagnetic shielding.

[0053] For details, please refer to Figures 4-8 The control component 15 is mounted on the lower end of the fixed frame 131, outside the drive system 134, and is the core mechanical control component for automatically reversing at the limit positions of horizontal reciprocating swing. The control component 15 requires no sensors or electronic control programs; it relies entirely on mechanical structure to achieve automatic reversing when the left / right limits are reached, thereby switching the meshing state of the first gear pair and the second gear pair, enabling the drive shaft 133 to drive the electromagnetic shield 14 to stably achieve horizontal reciprocating scanning. The control component 15 mainly includes a control ring 151, a guide frame 152, guide rod I 153, guide rod II 154, and an annular guide groove 155.

[0054] The control ring 151 is circular in shape and is coaxially rotatably mounted on the outer wall of the drive sleeve II 134h. It can move axially up and down with the drive sleeve II 134h without affecting its normal rotational movement. A guide rod I 153 extends horizontally on one side of the control ring 151, and a guide rod II 154 extends horizontally on the other side. The two guide rods are distributed at a certain angle and are used for guiding and limiting and reversing triggering, respectively.

[0055] The guide frame 152 is fixedly installed at the lower end of the fixed frame 131 and remains stationary. A straight groove is formed on the guide frame 152 along the vertical direction. The guide rod I 153 extends into the groove and forms a sliding engagement with it, allowing only the guide rod I 153 to move up and down in the vertical direction, restricting the control ring 151 from rotating circumferentially, and ensuring that the guide rod II 154 is always stably extended into the annular guide groove 155.

[0056] An annular guide groove 155 is disposed between the first sector gear 134a and the second sector gear 134b, and rotates synchronously with the drive shaft 133. The annular guide groove 155 is formed by the alternating splicing of a first U-shaped groove 155a and a second U-shaped groove 155b, forming a closed loop. The first U-shaped groove 155a is fixedly disposed on the first sector gear 134a, and the second U-shaped groove 155b is fixedly disposed on the second sector gear 134b. A first spring plate 155c and a second spring plate 155d are respectively disposed at the extreme positions at both ends of the annular guide groove 155. The first spring plate 155c is used to push the guide rod II 154 from the lower end to the upper end of the annular guide groove 155, and the second spring plate 155d is used to press the guide rod II 154 from the upper end to the lower end of the annular guide groove 155, thereby triggering a reversing action.

[0057] When the electromagnetic shield 14 rotates to the left limit position with the drive shaft 133, the guide rod II 154 moves to the position of the first spring plate 155c. The first spring plate 155c generates an elastic thrust, pushing the guide rod II 154 upward from the lower end of the annular guide groove 155 into the upper track. The guide rod II 154 drives the control ring 151, drive sleeve II 134h, drive sleeve I 134g, and the first drive gear 134c and the second drive gear 134d to move upward axially as a whole, so that the first drive gear 134c engages with the first sector gear 134a, and the second drive gear 134d disengages from the second sector gear 134b. The drive shaft 133 rotates to the right in the opposite direction under the drive of the first gear pair. When the electromagnetic shield 14 rotates to its right limit position with the drive shaft 133, the guide rod II 154 moves to the position of the second spring plate 155d. The second spring plate 155d generates elastic pressure, pressing the guide rod II 154 downward from the upper end of the annular guide groove 155 into the lower end track. The guide rod II 154 drives the control ring 151 and related gear set to move downward axially as a whole, causing the second drive gear 134d to engage with the second sector gear 134b, and the first drive gear 134c to disengage from the first sector gear 134a. The drive shaft 133 rotates in the opposite direction to the left under the drive of the second gear pair.

[0058] Through the above-mentioned cyclic action, the control component 15 can realize pure mechanical automatic continuous reversing, so that the horizontal reciprocating adjustment component 13 can continuously and stably drive the electromagnetic shield 14 to swing left and right within the set angle. It has a simple structure, reliable operation, no need for circuit control, and strong long-term working stability.

[0059] For details, please refer to Figures 1-2The second storage box 2 is a closed box structure with electromagnetic shielding and acoustic isolation functions. It is set adjacent to the first storage box 1 by a vertical partition 3 and is independently separated from it, forming an integrated dual-cabin layout with external dynamic shielding and internal equipment security control. The whole is used to realize the centralized storage, independent isolation, near-field communication blocking and anti-recording protection of portable electronic devices such as mobile phones and tablets in classified scenarios.

[0060] The second storage box 2 has a second opening 21 at its rear end, which serves as an operation channel for inserting and removing electronic devices. An openable shielding door 22 is installed at the second opening 21. Both the shielding door 22 and the body of the second storage box 2 are made of electromagnetic shielding material. When closed, they can form a complete and continuous electromagnetic shielding cavity, effectively blocking the transmission of internal and external wireless signals.

[0061] For details, please refer to Figure 9 The interior of the second storage box 2 is evenly arranged with several metal compartments 23. Each metal compartment 23 is independent and not interconnected, forming a multi-station independent storage space. The front end of each metal compartment 23 is open, and a metal shielding plate 24 is hinged to the open end. The metal shielding plate 24 can be flipped open and closed around the hinge axis. In the closed state, it forms a closed independent shielding cavity with the metal compartment 23, so that each storage station has its own shielding capability, avoiding information exchange between devices through near-field communication methods such as Bluetooth, NFC, and infrared, and eliminating the risk of information leakage from a physical level.

[0062] The inner wall of the second storage box 2 is equipped with a sound insulation layer. The sound insulation layer is closely attached to the inner wall of the box to absorb and block the propagation of sound waves, effectively suppressing the device's sound pickup and environmental recording. Together with the electromagnetic shielding effect of the metal grid 23 and the metal shielding plate 24, a dual security protection mechanism of electromagnetic shielding and acoustic isolation is formed to meet the usage requirements of high-security scenarios for all-dimensional security control of electronic devices.

[0063] The second storage box 2 shares an integrated body structure with the first storage box 1. It has a compact layout and high space utilization. While achieving centralized and safe storage of electronic equipment, it does not increase the overall volume of the device. It does not interfere with moving parts such as the lifting and opening machine 11, the horizontal reciprocating adjustment component 13, and the pitch angle adjustment component 12, ensuring that the device operates stably, functions completely, and is safe and convenient to use.

[0064] The method of using an electromagnetic shielding device for electronic devices according to the present invention is as follows: The overall usage process of the device includes four stages: electronic device storage, arming activation, dynamic shielding, and disarming and storage. The entire process is automated, simple to operate, safe, and efficient. Details are as follows: ① Electronic equipment storage stage The operator opens the shielding door 22 of the second storage box 2 and places mobile phones and other electronic devices one by one into the respective metal compartments 23. The metal shielding plates 24 of the corresponding metal compartments 23 are closed, ensuring each device is in an independent, sealed shielded cavity. The shielding door 22 is then closed, forming a complete shielded cavity in the second storage box 2, blocking wireless signals and near-field communication. Simultaneously, the inner wall sound insulation layer provides anti-recording protection. Once the equipment is stored, the device enters the ready-to-start state.

[0065] ② Deployment Activation Phase Pressing the start button activates linear motor II 115, driving push rod 113 downwards. Push rod 113 causes the hinge shaft of folding door 112 to slide along horizontal slide rail 114, causing folding door 112 to fold inwards and the first opening 111 to fully open. After the first opening 111 is fully open, linear motor I 117 starts, driving lifting drive mechanism 116 to extend upwards. Lifting drive mechanism 116 pushes the fixed frame 131, horizontal reciprocating adjustment component 13, pitch angle adjustment component 12, and electromagnetic shield 14 upwards as a whole. Electromagnetic shield 14 extends smoothly through the first opening 111 to the outside of the first storage box 1, and stops after reaching the working height, completing the deployment.

[0066] ③ Dynamic shielding working stage a) Pitch angle adjustment The worm drive motor 121c starts, driving the worm 121a to rotate. The worm 121a drives the worm wheel 121b and the mounting shaft 122 to rotate. The mounting shaft 122 drives the adjusting bracket 123 and the electromagnetic shield 14 to tilt. If it is necessary to fix it at a specific angle, the worm drive motor 121c stops when the preset angle is reached, the worm wheel and worm self-lock, and the compression spring 135b of the positioning system 135 abuts against the protrusion 135c to eliminate gaps and maintain stability.

[0067] b. Horizontal reciprocating scan shielding Drive system 134 starts, and drive rod I 134e and drive rod II 134f rotate coaxially in opposite directions under the action of first bevel gear 134i, second bevel gear 134j, and third bevel gear 134k. Power is transmitted through drive sleeve I 134g and drive sleeve II 134h to first drive gear 134c and second drive gear 134d. In the initial state, one set of gears is engaged, driving drive shaft 133 to rotate, causing electromagnetic shield 14 to swing in an arc in the horizontal direction. When it swings to the left limit position, guide rod II 154 triggers first spring plate 155c, pushing guide rod II 154 into the upper track of annular guide groove 155. Control ring 151 moves upward, switching gear pair engagement, and electromagnetic shield 14 automatically swings in the opposite direction to the right. When the swing reaches its right limit, the guide rod II 154 triggers the second spring plate 155d, pressing the guide rod II 154 into the lower track of the annular guide groove 155. The control ring 151 moves downward, switching the gear pair engagement again, and the electromagnetic shield 14 automatically swings to the left in the opposite direction. This cycle repeats, enabling the electromagnetic shield 14 to achieve continuous horizontal scanning shielding, covering the entire area without blind spots or weak points.

[0068] ④ Disarmament and Storage Phase After the shielding operation is completed, pressing the stop button will first stop the electromagnetic shield 14 from transmitting signals. Linear motor I 117 will reverse, and the lifting drive mechanism 116 will retract, causing the electromagnetic shield 14 to fall back into the first storage box 1. Once in position, linear motor II 115 will reverse, and push rod 113 will move upwards, pushing the folding door 112 to unfold and completely close the first opening 111. With the first opening 111 closed, the device is fully stored, providing dust and impact protection for internal components. The operator can then open the shielding door 22 and the metal shielding plate 24 to retrieve the stored electronic equipment, completing the entire operation.

[0069] In summary, this application has the following advantages: (1) Dual-axis independent adjustment, shielding without dead angles: This application adopts a dual-axis drive structure with independent pitch angle adjustment and horizontal reciprocating swing. The pitch direction can be adapted to complex scenarios such as tiered conference rooms and spaces with varying heights, avoiding vertical shielding blind spots; the horizontal direction realizes automatic reciprocating scanning shielding, greatly expanding the effective coverage area, making signal shielding more uniform and without weak points. Compared with traditional shielding devices with fixed angle or single-direction adjustment, this application can flexibly adapt to various meeting room layouts and spatial structures, significantly improving shielding efficiency and adaptability; (2) Integrated shielding and storage: This application integrates the dynamic electromagnetic shielder 14 with the electronic device security storage module into the same device, realizing the dual functions of external full-area signal shielding and internal centralized control of equipment. The equipment storage compartment adopts an independent metal grid 23 and metal shielding plate 24 isolation design to block near-field communication such as Bluetooth and NFC; the inner wall is added with a sound insulation layer to physically suppress recording behavior, forming a dual security guarantee of electromagnetic shielding and acoustic protection, solving the problem of insufficient isolation and easy information leakage of traditional equipment storage cabinets, and is more suitable for use in high-confidential meetings and confidential places; (3) Horizontal reciprocating without complex electrical components: This application achieves automatic, non-electrically controlled commutation when the shield reaches the left and right limit positions through a purely mechanical structure of double sector gears, coaxial reverse drive gears, annular guide groove 155, and spring plate jumper. It does not rely on frequent forward and reverse rotation of the motor, sensor detection, or program control, effectively reducing the risk of circuit failure. The overall mechanical transmission is compact, the force is reasonable, and the operation is stable, which simplifies the drive control logic and improves the stability, durability, and environmental adaptability of the device under long-term continuous operation. (4) Convenient storage: This application realizes fully automated control of the electromagnetic shield 14, including automatic lifting, automatic opening and closing of the hatch folding door, electric adjustment of the pitch angle, and automatic horizontal swing operation. Deployment and storage are quick and easy, without the need for manual operation. At the same time, the electromagnetic shield 14 is completely built-in in the storage state, which can effectively prevent dust and impact and protect the core components. The overall structure is compact and has a high space utilization rate, combining ease of use, safety and practicality, and is more in line with the needs of modern and intelligent security management.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Terms such as "upper," "lower," "left," "right," "front," and "rear" used in the invention are merely for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shielding device for electronic equipment, characterized in that, The system includes a first storage box and a second storage box arranged adjacent to each other. The first storage box contains a motion module, and the second storage box contains an electronic device storage module. The motion module includes a pitch angle adjustment component and a horizontal reciprocating adjustment component. The pitch angle adjustment component is located above the horizontal reciprocating adjustment component. The pitch angle adjustment component includes an angle adjustment drive mechanism, a mounting shaft, and an adjustment frame. The lower end of the adjustment frame is fixedly connected to the mounting shaft, and the mounting shaft is connected to the output end of the angle adjustment drive mechanism. The horizontal reciprocating adjustment component includes a fixed frame, a mounting base, and a drive shaft. The lower end of the mounting base is fixedly connected to the drive shaft and rotatably connected to the fixed frame via the drive shaft.

2. The electronic device shielding device according to claim 1, characterized in that, The angle adjustment drive mechanism includes a worm, a worm wheel, and a worm drive motor. The worm is rotatably mounted on the mounting base and perpendicular to the mounting shaft. The worm drive motor is mounted on the mounting base and is connected to the worm drive. The worm wheel meshes with the worm and is fixedly connected to the mounting shaft.

3. The electronic device shielding device according to claim 1, characterized in that, The horizontal reciprocating adjustment assembly further includes a positioning system, which includes a positioning frame, a compression spring, a first slide rod, a second slide rod, and a protrusion. The first slide rod and the second slide rod are located on the upper part of the positioning frame. The compression spring is disposed between the first slide rod and the second slide rod. The protrusion is disposed on the upper end of the second slide rod and abuts against the adjustment frame.

4. The electronic device shielding device according to claim 1, characterized in that, The horizontal reciprocating adjustment assembly further includes a drive system, which includes a first sector gear, a second sector gear, a first drive gear, and a second drive gear; the first sector gear is fixedly connected to the drive shaft, and the second sector gear is rotatably connected to the drive shaft; the first drive gear and the second drive gear are disposed at the lower end of the fixed frame and are coaxially and in reverse arrangement; the first drive gear and the first sector gear cooperate to form a first gear pair; the second drive gear and the second sector gear cooperate to form a second gear pair.

5. The electronic device shielding device according to claim 4, characterized in that, The drive system further includes drive rod I, drive rod II, a first bevel gear, a second bevel gear, and a third bevel gear; drive rod I is rotatably mounted on the lower end of the fixed frame, drive rod II is rotatably mounted on the upper part of drive rod I, and drive rod I and drive rod II are axially limited; the first bevel gear and the second bevel gear are respectively corresponding to drive rod I and drive rod II, and the first bevel gear and the second bevel gear mesh together with a third bevel gear, which is rotatably mounted on the fixed frame.

6. The electronic device shielding device according to claim 5, characterized in that, The drive system further includes drive sleeve I, drive sleeve II, spline cavity, spline shaft I, and spline shaft II; drive sleeve I and drive sleeve II are respectively connected to the first drive gear and the second drive gear, drive sleeve I and drive sleeve II are rotatably connected and axially limited; each of drive sleeve I and drive sleeve II has a spline cavity at one end that is far apart from each other, drive rod I has a spline shaft I that mates with the spline cavity of drive sleeve I, and drive rod II has a spline shaft II that mates with the spline cavity of drive sleeve II.

7. The electronic device shielding device according to claim 6, characterized in that, The first storage box also includes a control component, which is connected to a first drive gear and a second drive gear. The control component includes a control ring, a guide frame, guide rod I, guide rod II, and an annular guide groove. The control ring is rotatably mounted on the drive sleeve II. The guide frame is fixedly mounted at the lower end of a fixed frame, and a sliding groove is provided on the guide frame along the vertical direction. One side of the control ring has guide rod I that slides into the sliding groove, and the other side of the control ring has guide rod II. The annular guide groove is located between the first sector gear and the second sector gear, and guide rod II slides into the annular guide groove.

8. The electronic device shielding device according to claim 7, characterized in that, The annular guide groove includes a first U-shaped groove, a second U-shaped groove, a first spring plate, and a second spring plate. The first U-shaped groove and the second U-shaped groove are respectively fixedly mounted on the first sector gear and the second sector gear, and the first U-shaped groove and the second U-shaped groove are staggered to form the annular guide groove. The first spring plate and the second spring plate are respectively disposed at both ends of the annular guide groove. The first spring plate cooperates with the guide rod II to drive the guide rod II from the lower end of the annular guide groove to the upper end, and the second spring plate cooperates with the guide rod II to drive the guide rod II from the upper end of the annular guide groove to the lower end. When the guide rod II is located at the upper end of the annular guide groove, the first drive gear meshes with the first sector gear. When the guide rod II is located at the lower end of the annular guide groove, the second drive gear meshes with the second sector gear.

9. The electronic device shielding device according to claim 1, characterized in that, The first storage box also includes a lifting and opening mechanism, which includes a folding door, a push rod, a horizontal slide rail, a lifting drive mechanism, a linear motor I, and a linear motor II. The folding door includes two panels symmetrically arranged on the upper wall of the first storage box. Each folding door includes a hinge shaft and two door panels hinged to the hinge shaft. The push rod slides vertically along the wall of the first storage box and has the horizontal slide rail. One end of the hinge shaft slides within the horizontal slide rail. The push rod is electrically connected to linear motor II. The lifting drive mechanism is located between the lower end of the fixed frame and the second storage box, and is electrically connected to linear motor I.

10. The electronic device shielding device according to claim 1, characterized in that, The second storage box has a second opening at its rear end, and the second opening has an openable shielding door. The shielding door and the second storage box work together to form an electronic device storage module. The electronic device storage module includes several metal compartments inside the second storage box. One end of each metal compartment is an open end, and a metal shielding plate is hinged to the open end. The inner wall of the second storage box is also provided with a sound insulation layer.

Images