Electromagnetic pulse shielding case

Abstract

The invention discloses an electromagnetic pulse shielding case which is novel and reasonable in structure, a case body is in sealed butt joint in a manner that an inner shielding case and an outer shielding case slide up and down, and a temperature detection device, a lifting device and a controller are arranged in a matched manner, so that the lifting device can be controlled to perform lifting adjustment on the outer shielding case according to the detected temperature of a space in the case. On the basis, on the premise that the electromagnetic pulse shielding function of the shielding case is guaranteed, the closed space in the electromagnetic pulse shielding case can be automatically expanded when the temperature in the case is too high, so that pressure reduction, heat dissipation and temperature reduction are conducted in the case, meanwhile, the outer shielding case is made of the metal wave-absorbing material with the heat conduction performance to conduct electromagnetic pulse shielding, and the electromagnetic pulse shielding effect is improved. When the closed space in the electromagnetic pulse shielding cover is expanded, heat can be transferred to the outside of the cover by utilizing the thermal conductivity of the electromagnetic pulse shielding cover, so that a good heat dissipation effect is achieved, and the problem that the operation of electronic equipment in the cover is influenced due to over-high temperature in the shielding cover can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic pulse protection of electronic equipment, in particular to a novel electromagnetic pulse shielding cover. Background Art

[0002] Electromagnetic pulses not only interfere with the operation of electronic equipment and affect the signal transmission accuracy of electromagnetic equipment, but can even damage electronic equipment in serious cases. Therefore, it is necessary to perform reasonable electromagnetic shielding on electronic equipment.

[0003] Existing electromagnetic pulse shielding covers are mostly closed shells that achieve electromagnetic shielding by absorbing electromagnetic waves. Since electromagnetic waves have a certain amount of energy, long-term absorption of electromagnetic waves will cause the electromagnetic pulse shielding cover to be overheated, which in turn causes the internal temperature of the electromagnetic pulse shielding cover to be too high, thereby affecting the operation of the electronic equipment inside the cover. Therefore, it is necessary to propose a new type of electromagnetic pulse shielding cover to solve the above problem. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of electromagnetic pulse shielding cover, which can not only absorb external electromagnetic waves, but also effectively dissipate heat from the shielding cover, so as to solve the problem of excessively high internal temperature of the electromagnetic pulse shielding cover in the above-mentioned prior art, thereby affecting the operation of electronic equipment inside the cover.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides an electromagnetic pulse shielding cover, comprising:

[0007] An inner shielding shell with an open top, the interior of which is used to contain electronic equipment, and the inner shielding shell can shield external electromagnetic pulses;

[0008] An outer shielding shell with an opening facing downward, the outer shielding shell is buckled on the outside of the inner shielding shell and movably cooperates with the inner shielding shell, a full circle of sealing strips is arranged between the inner wall of the opening end of the outer shielding shell and the outer wall of the open end of the inner shielding shell, so as to form a closed space between the outer shielding shell and the inner shielding shell; the outer shielding shell is made of metal absorbing material and can absorb external electromagnetic pulses;

[0009] A temperature detection device is disposed in the inner shielding shell, and is used to detect the temperature in the enclosed space;

[0010] A lifting device is arranged outside the closed space, and the lifting device can adjust the lifting of the outer shielding shell according to the temperature;

[0011] The controller is arranged outside the closed space, and the lifting device and the temperature detection device are both communicatively connected to the controller. When the temperature is higher than a threshold value, the controller can control the lifting device to lift the outer shielding shell to expand the closed space, and when the temperature is lower than the threshold value, the controller can control the lifting device to lower the outer shielding shell to shrink and restore the closed space.

[0012] Preferably, a plurality of heat dissipation protrusions are provided on the outer surface of the outer shielding shell, and the heat dissipation protrusions are integrally formed with the outer shielding shell.

[0013] Preferably, the outer shielding shell and the inner shielding shell are both copper structures with nickel-plated outer surfaces.

[0014] Preferably, the inner shielding shell and the outer shielding shell are both prismatic or cylindrical; the inner shielding shell and the outer shielding shell are coaxial, and the outer wall of the inner shielding shell and the inner wall of the outer shielding shell are gap-matched.

[0015] Preferably, at least two sealing strips are provided between the inner wall of the opening end of the outer shielding shell and the outer wall of the open end of the inner shielding shell along the axial direction of the inner shielding shell.

[0016] Preferably, the lifting device comprises two sets of lifting mechanisms symmetrically arranged on both sides of the outer shielding shell, and any one of the lifting mechanisms comprises:

[0017] An L-shaped bracket, wherein the L-shaped bracket faces the outer shielding shell;

[0018] An electric slide is vertically arranged on the inner side of the vertical plate of the L-shaped bracket, and the slider of the electric slide is connected to the side wall of the outer shielding shell through an insulating connecting rod; the motor of the electric slide is communicatively connected to the controller;

[0019] Both sides of the bottom plate of the inner shielding shell are respectively arranged above the transverse plates of the two groups of L-shaped brackets, so that the center of the bottom plate of the inner shielding shell is suspended in the air.

[0020] Preferably, an anti-dumping vertical plate is provided on the outer side of the vertical plate of any one of the L-shaped brackets.

[0021] Preferably, a wire threading hole is provided in a suspended portion of the bottom plate of the inner shielding shell, an insulating layer is provided on the inner wall of the wire threading hole, a data line of the temperature detection device passes through the wire threading hole, shielding plugs are provided at both ends of the wire threading hole, and the shielding plugs are used to shield and seal the gap between the data line and the wire threading hole.

[0022] Preferably, the shielding plug is a conical shielding cover, which is a copper structure with nickel-plated outer surface, and the inner wall of the conical shielding cover is provided with an insulating layer; the conical shielding cover is coaxially arranged with the threading hole, the large end of the conical shielding cover is connected to the bottom plate of the inner shielding shell, and the diameter of the large end of the conical shielding cover is larger than the aperture of the threading hole, the diameter of the small end of the conical shielding cover is not smaller than the aperture of the threading hole, and the inner wall of the small end of the conical shielding cover is provided with a sealing rubber ring, and the sealing rubber ring is used to seal the gap between the data cable and the conical shielding cover.

[0023] Preferably, the bottom plate of the inner shielding shell is electrically connected to a grounding wire, and the grounding wire is used to conduct current into the ground.

[0024] Compared with the prior art, the present invention has achieved the following technical effects:

[0025] The electromagnetic pulse shielding cover proposed by the present invention has a novel and reasonable structure. The cover body adopts the method of sliding the inner and outer shielding shells up and down to seal and dock. With the arrangement of the temperature detection device, the lifting device and the controller, the lifting device can be controlled to lift and lower the outer shielding shell according to the detected temperature of the space inside the cover. When the temperature inside the cover is higher than the threshold, the lifting device can be controlled to lift the outer shielding shell to expand the closed space. When the temperature inside the cover is lower than the threshold, the lifting device can be controlled to lower the outer shielding shell to reduce the closed space. Based on this, the present invention can automatically expand the closed space inside the electromagnetic pulse shielding cover when the temperature inside the cover is too high, thereby reducing the pressure, heat and temperature inside the cover. At the same time, because the outer shielding shell adopts a metal absorbing material with thermal conductivity for electromagnetic pulse shielding, the closed space inside the electromagnetic pulse shielding cover can be expanded, and the heat can be transferred to the outside of the cover by using its own thermal conductivity to achieve a good heat dissipation effect, thereby avoiding the problem of affecting the operation of the electronic equipment inside the cover due to the excessive temperature inside the shielding cover.

[0026] In addition, when the enclosed space inside the electromagnetic pulse shielding cover is cooled to below the threshold by outward heat dissipation, the controller can also automatically control the lifting device to lower the outer shielding shell to shrink and restore the enclosed space. After recovery, the outer shielding shell will completely cover the inner shielding shell inside, forming a double-layer shielding structure on the side wall of the electromagnetic pulse shielding cover with double shielding function, thereby enhancing the shielding performance of the entire electromagnetic pulse shielding cover, and having obvious anti-electromagnetic pulse effect in a strong electromagnetic pulse radiation environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic structural diagram of the electromagnetic pulse shielding cover disclosed in an embodiment of the present invention, in which the closed space volume is in a minimum state;

[0029] Figure 2 It is a schematic structural diagram of the electromagnetic pulse shielding cover disclosed in an embodiment of the present invention, in which the closed space volume is in the maximum state;

[0030] Figure 3 It is a schematic structural diagram of a shielding plug in an electromagnetic pulse shielding cover disclosed in an embodiment of the present invention;

[0031] In the figure, reference numerals are: 100, electromagnetic pulse shielding cover;

[0032] 1. Inner shielding shell; 11. Bottom plate; 12. Threading hole;

[0033] 2. Outer shielding shell; 21. Heat dissipation protrusion;

[0034] 3. Sealing strips;

[0035] 4. Temperature detection device; 41. Data line;

[0036] 5. Lifting device; 51. L-shaped bracket; 52. Electric slide; 53. Insulating connecting rod; 54. Anti-tilting vertical plate;

[0037] 6. Shielding plug; 61. Insulation layer; 62. Sealing rubber ring;

[0038] 7. Ground wire. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The purpose of the present invention is to provide a new type of electromagnetic pulse shielding cover, which can not only absorb external electromagnetic waves, but also effectively dissipate heat for the shielding cover, so as to solve the problem in the prior art that the internal temperature of the electromagnetic pulse shielding cover is too high, thus affecting the operation of the electronic equipment inside the cover.

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] like Figure 1 and Figure 2 As shown, this embodiment proposes an electromagnetic pulse shielding cover 100, comprising an inner shielding shell 1 with an open top, an outer shielding shell 2 with an opening facing downward, a temperature detection device 4, a lifting device 5 and a controller, wherein the inner shielding shell 1 with an open top is used to hold electronic equipment, and the inner shielding shell 1 can shield external electromagnetic pulses; the outer shielding shell 2 is buckled on the outside of the inner shielding shell 1 and movably cooperates with the inner shielding shell 1, and a full circle of sealing strips 3 is arranged between the inner wall of the open end of the outer shielding shell 2 and the outer wall of the open end of the inner shielding shell 1, so that a closed space is formed between the outer shielding shell 2 and the inner shielding shell 1; the outer shielding shell 2 is made of metal absorbing material The material is made of and can absorb external electromagnetic pulses; the temperature detection device 4 is arranged in the inner shielding shell 1, and the temperature detection device 4 is used to detect the temperature in the closed space; the lifting device 5 is arranged outside the closed space, and the lifting device 5 can adjust the lifting and lowering of the outer shielding shell 2 according to the temperature; the controller is arranged outside the closed space, and the lifting device 5 and the temperature detection device 4 are both connected to the controller for communication, and the controller can control the lifting device 5 to lift the outer shielding shell 2 when the temperature is higher than the threshold value to expand the closed space, and can control the lifting device 5 to lower the outer shielding shell 2 when the temperature is lower than the threshold value to reduce the closed space and restore. The electromagnetic pulse shielding cover 100 mentioned above adopts the sealing docking of the cover body by the inner and outer shielding shells sliding up and down, and cooperates with the settings of the temperature detection device 4, the lifting device 5 and the controller to realize the lifting and lowering of the outer shielding shell 2 according to the detected temperature of the space inside the cover, and can control the lifting device 5 to lift the outer shielding shell 2 when the temperature inside the cover is higher than the threshold value to expand the closed space (such as Figure 2 As shown), when the temperature inside the cover is lower than the threshold, the lifting device 5 is controlled to descend the outer shielding shell 2 to reduce the enclosed space to restore to Figure 1 state. Based on this, the present invention can reduce the pressure, dissipate heat and cool the inside of the shielding cover by automatically expanding the enclosed space in the electromagnetic pulse shielding cover 100 when the temperature inside the cover is too high, while ensuring the electromagnetic pulse shielding function of the shielding cover. At the same time, since the outer shielding shell 2 uses a metal absorbing material with thermal conductivity for electromagnetic pulse shielding, the enclosed space in the electromagnetic pulse shielding cover 100 can be expanded while transferring heat to the outside of the cover by utilizing its own thermal conductivity, thereby achieving a good heat dissipation effect. In addition, when the enclosed space in the electromagnetic pulse shielding cover 100 is cooled to below a threshold value by dissipating heat to the outside, the controller can also automatically control the lifting device 5 to descend the outer shielding shell 2 to shrink and restore the enclosed space until it is restored to the Figure 1 state. Figure 1In the closed state, the outer shielding shell 2 completely covers the inner shielding shell 1 inside, forming a double-layer shielding structure on the side wall of the electromagnetic pulse shielding cover 100, which has a double shielding function, so that the shielding performance of the entire electromagnetic pulse shielding cover 100 is enhanced.

[0043] In this embodiment, the electromagnetic pulse shield 100 switches between two volume states. The first volume state corresponds to Figure 1 In the initial state shown, the outer shielding shell 2 is completely covered on the outside of the inner shielding shell 1. At this time, the volume of the electromagnetic pulse shielding cover 100 is the volume of the inner shielding shell 1. The second volume state corresponds to Figure 2 In the maximum volume state shown, the outer shielding shell 2 rises to the highest position relative to the inner shielding shell 1, and the volume of the electromagnetic pulse shielding cover 100 is the sum of the volumes of the outer shielding shell 2 and the inner shielding shell 1. It is preferred that the volume of the shielding cover in the second volume state is 2 to 3 times the volume of the shielding cover in the first volume state, so as to ensure that the shielding cover in the second volume state has sufficient space for heat dissipation.

[0044] In this embodiment, Figure 1 and Figure 2 As shown, the outer surface of the outer shielding shell 2 is provided with a plurality of heat dissipation protrusions 21, and the heat dissipation protrusions 21 are integrally formed with the outer shielding shell 2. The outer shielding shell 2 as a whole is preferably a copper structure with nickel plating on the outer surface, which can not only meet the shielding requirements, but also utilize the thermal conductivity of the copper structure, so that the heat inside the inner and outer shielding shells can be dissipated to the outer space of the cover through heat conduction, so as to achieve the purpose of promoting the cooling inside the cover. In this embodiment, the shape of the above-mentioned heat dissipation protrusions 21 is not limited, and can be cylindrical, prism-shaped or pyramid-shaped structures, or can be irregular shapes. The shapes of all heat dissipation protrusions 21 can be completely the same, or not completely the same or completely different. Accordingly, the heights of all heat dissipation protrusions 21 can also be set to be completely the same, not completely the same or completely different. The distribution mode of the heat dissipation protrusions 21 on the outer surface of the outer shielding shell 2 can be uniformly distributed or non-uniformly distributed. The specific setting form of all heat dissipation protrusions 21 can be flexibly adjusted according to the use performance and heat release form of the electronic equipment to be shielded, so as to maximize the heat dissipation effect.

[0045] In this embodiment, a single-layer interlayer can be provided in the entire circle side wall of the outer shielding shell 2 as required, and the interlayer is connected to the inside of the outer shielding shell 2 through the hollow holes of the inner wall. At the same time, an electric fan is provided in the interlayer, and the electric fan is connected to the controller in communication. The controller can start the electric fan when the temperature is higher than the threshold and the lifting device 5 is controlled to lift the outer shielding shell 2, so as to use the negative pressure of the electric fan to quickly adsorb the hot air in the shielding cover to the interlayer of the outer shielding shell 2, thereby accelerating the contact between the hot air flow and the outer wall of the outer shielding shell 2, which is conducive to rapid cooling and heat dissipation. Correspondingly, when the temperature is higher than the threshold and the controller starts to control the lifting device 5 to descend the outer shielding shell 2, the controller controls to turn off the aforementioned electric fan to avoid excessive energy consumption and to avoid excessive heat generated by the fan operation, which affects the heat dissipation effect of the shielding cover. The aforementioned electric fan generally adopts a three-blade structure, and the driving form is preferably motor-driven; the present invention adopts the form that the electric fan is embedded in the interlayer of the outer shielding shell 2 as a whole, and hollow holes are set at the blades to facilitate wind discharge; the motor of the electric fan adopts a rechargeable micro motor, and the motor is fixed as a whole to the inner side of the outer wall of the interlayer of the outer shielding shell 2, and a through hole is provided in the outer wall of the interlayer of the outer shielding shell 2 to expose the charging port of the motor so as to charge the motor. In order to ensure the sealing of the charging port and the through hole, a sealing gasket is provided between the two.

[0046] In this embodiment, the specific shielding principle of the inner shielding shell 1 depends on the material used for the inner shielding shell 1. A metal absorbing material can be used for absorbing shielding, or a reflective electromagnetic wave shielding material can be used to utilize the multiple reflections of electromagnetic waves inside the shielding material to achieve the purpose of shielding electromagnetic waves. The above-mentioned reflective electromagnetic wave shielding material is an existing material, such as the materials disclosed in the Chinese patent application number 201410029521.X, the Chinese patent application number 201610044032.0, and the Chinese patent application number 201811000908.7, which will not be repeated here. In this embodiment, in order to improve the heat dissipation of the shielding cover, it is preferred that the inner shielding shell 1 is made of a metal absorbing material, such as a copper structure with the same outer surface nickel plating as the outer shielding shell 2, which can enhance the heat dissipation of the shell wall of the inner shielding shell 1 when the volume of the enclosed space is at the maximum state, thereby achieving the purpose of further enhancing the heat dissipation of the shielding cover.

[0047] In this embodiment, the inner shielding shell 1 and the outer shielding shell 2 are both prismatic or cylindrical; the inner shielding shell 1 and the outer shielding shell 2 are coaxial, and the outer wall of the inner shielding shell 1 and the inner wall of the outer shielding shell 2 are gap-matched. As a preferred solution, Figure 1 and Figure 2 As shown, the inner shielding shell 1 and the outer shielding shell 2 are both in the shape of quadrangular prisms. Based on this, the inner shielding shell 1 and the outer shielding shell 2 have the same wall thickness, and the cross-sections are both rectangular, and the rectangles of the two are similar rectangles.

[0048] In this embodiment, Figure 1 and Figure 2 As shown, in order to improve the sealing and shielding effect of the space inside the housing, at least two sealing strips 3 are preferably provided between the inner wall of the open end of the outer shielding shell 2 and the outer wall of the open end of the inner shielding shell 1 along the axial direction of the inner shielding shell 1. Figure 1 and Figure 2 As shown, two sealing strips 3 are arranged between the inner wall of the opening end of the outer shielding shell 2 and the outer wall of the open end of the inner shielding shell 1 .

[0049] In this embodiment, Figure 1 and Figure 2 As shown, the lifting device 5 includes two groups of lifting mechanisms symmetrically arranged on both sides of the outer shielding shell 2. The lifting mechanism preferably uses an electric slide as the main driving mechanism. The lifting mechanism specifically includes an L-shaped bracket 51 and an electric slide 52. The L-shaped bracket 51 faces the outer shielding shell 2; the electric slide 52 is vertically arranged on the inner side of the vertical plate of the L-shaped bracket 51, and the slider of the electric slide 52 is connected to the side wall of the outer shielding shell 2 through an insulating connecting rod 53; the motor of the electric slide 52 is connected to the controller in communication; the two sides of the bottom plate 11 of the inner shielding shell 1 are respectively arranged above the horizontal plates of the two groups of L-shaped brackets 51, so as to support the bottom plate 11 of the inner shielding shell 1 through the horizontal plates of the two groups of L-shaped brackets 51, based on which, the center of the bottom plate 11 of the inner shielding shell 1 is suspended. The above structural arrangement realizes the integration of the lifting device 5 and the inner and outer shielding shells, and the structure is compact.

[0050] In this embodiment, Figure 1 and Figure 2 As shown, an anti-tilt plate 54 is provided on the outer side of the vertical plate of any L-shaped bracket 51. The inner shielding shell 1 is pressed on the horizontal plate of the L-shaped bracket 51, which can play a role in reinforcing the horizontal plate side of the L-shaped bracket 51. The anti-tilt plate 54 is provided on the side of the vertical plate of the L-shaped bracket 51 away from the horizontal plate, which can prevent the L-shaped bracket 51 from tilting in the direction away from the outer shielding shell 2. The L-shaped bracket 51 with the anti-tilt plate 54 cooperates with the inner shielding shell 1 and complements each other, which can not only maintain the stability of the L-shaped bracket 51, but also effectively support the inner shielding shell 1 by using the L-shaped bracket 51.

[0051] In this embodiment, Figure 1 to Figure 3 As shown, a wire threading hole 12 is preferably provided in a suspended portion of the bottom plate 11 of the inner shielding shell 1, and an insulating layer 61 is provided on the inner wall of the wire threading hole 12. The data line 41 of the temperature detection device 4 passes through the wire threading hole 12, and shielding plugs 6 are provided at both ends of the wire threading hole 12. The wire threading hole 12 passes through the shielding plugs 6, and the shielding plugs 6 are used to shield and seal the gap between the data line 41 and the wire threading hole 12.

[0052] Specifically, in this embodiment, Figure 3As shown, the shielding plug 6 is preferably a conical shielding cover, which is a copper structure with nickel-plated outer surface and has good electromagnetic shielding function. The inner wall of the conical shielding cover is provided with an insulating layer 61; the conical shielding cover is coaxially arranged with the threading hole 12, the large end of the conical shielding cover is connected to the bottom plate 11 of the inner shielding shell 1, and the diameter of the large end of the conical shielding cover is larger than the aperture of the threading hole 12 to cover the hole end of the threading hole 12, the diameter of the small end of the conical shielding cover is not smaller than the aperture of the threading hole 12, and the inner wall of the small end of the conical shielding cover is provided with a sealing rubber ring 62, which is used to seal the gap between the data cable 41 and the conical shielding cover.

[0053] In this embodiment, Figure 1 and Figure 2 As shown, the bottom plate 11 of the inner shielding shell 1 is preferably electrically connected to a grounding wire 7, which is used to conduct current into the ground to effectively prevent electromagnetic pulse radiation from damaging the electrical components inside the shielding cover. The grounding wire 7 is preferably welded to the bottom plate 11.

[0054] The electromagnetic pulse shielding cover proposed by the present invention has a novel and reasonable structure. The cover body adopts the method of sliding the inner and outer shielding shells up and down to seal and dock. With the arrangement of the temperature detection device, the lifting device and the controller, the lifting device can be controlled to lift and lower the outer shielding shell according to the detected temperature of the space inside the cover. When the temperature inside the cover is higher than the threshold, the lifting device can be controlled to lift the outer shielding shell to expand the closed space. When the temperature inside the cover is lower than the threshold, the lifting device can be controlled to lower the outer shielding shell to reduce the closed space. Based on this, the present invention can automatically expand the closed space inside the electromagnetic pulse shielding cover when the temperature inside the cover is too high, thereby reducing the pressure, heat and temperature inside the cover. At the same time, because the outer shielding shell adopts a metal absorbing material with thermal conductivity for electromagnetic pulse shielding, the closed space inside the electromagnetic pulse shielding cover can be expanded, and the heat can be transferred to the outside of the cover by using its own thermal conductivity to achieve a good heat dissipation effect, thereby avoiding the problem of affecting the operation of the electronic equipment inside the cover due to the excessive temperature inside the shielding cover. In addition, when the enclosed space inside the electromagnetic pulse shielding cover is cooled to below the threshold by outward heat dissipation, the controller can also automatically control the lifting device to lower the outer shielding shell to shrink and restore the enclosed space. After recovery, the outer shielding shell will completely cover the inner shielding shell inside, forming a double-layer shielding structure on the side wall of the electromagnetic pulse shielding cover with double shielding function, thereby enhancing the shielding performance of the entire electromagnetic pulse shielding cover, and having obvious anti-electromagnetic pulse effect in a strong electromagnetic pulse radiation environment.

[0055] In addition, the electromagnetic pulse shielding cover, while ensuring the electromagnetic pulse shielding function of the shielding cover, realizes the effective heat dissipation of the shielding cover by utilizing the volume switching of the enclosed space and the thermal conductivity of the metal shielding material, thereby solving the problem of excessively high internal temperature of the electromagnetic pulse shielding cover in the prior art, thereby affecting the operation of the electronic equipment inside the cover. At the same time, the temperature detection device, the lifting device and the controller are connected in communication, realizing the heat dissipation mode of the electromagnetic pulse shielding cover (i.e. Figure 2 The inner and outer shielding shell states shown) and the shielding reinforcement mode (i.e. Figure 1 The automatic switching of the inner and outer shielding shell states shown in the figure is highly intelligent; the setting of the grounding wire can timely guide the current into the ground, thereby effectively preventing the electromagnetic pulse radiation from causing damage to the electrical components inside the shielding cover.

[0056] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electromagnetic pulse shielding cover, characterized in that: include: An inner shielding shell with an open top, the interior of which is used to contain electronic equipment, and the inner shielding shell can shield external electromagnetic pulses; An outer shielding shell with an opening facing downward, the outer shielding shell is buckled on the outside of the inner shielding shell and movably cooperates with the inner shielding shell, a full circle of sealing strips is arranged between the inner wall of the opening end of the outer shielding shell and the outer wall of the open end of the inner shielding shell, so as to form a closed space between the outer shielding shell and the inner shielding shell; the outer shielding shell is made of metal absorbing material and can absorb external electromagnetic pulses; A temperature detection device is disposed in the inner shielding shell, and is used to detect the temperature in the enclosed space; A lifting device is arranged outside the closed space, and the lifting device can adjust the lifting of the outer shielding shell according to the temperature; The controller is arranged outside the closed space, and the lifting device and the temperature detection device are both communicatively connected to the controller. When the temperature is higher than a threshold value, the controller can control the lifting device to lift the outer shielding shell to expand the closed space, and when the temperature is lower than the threshold value, the controller can control the lifting device to lower the outer shielding shell to shrink and restore the closed space.

2. The electromagnetic pulse shield according to claim 1, characterized in that: The outer surface of the outer shielding shell is provided with a plurality of heat dissipation protrusions, and the heat dissipation protrusions are integrally formed with the outer shielding shell.

3. The electromagnetic pulse shield according to claim 1, characterized in that: The outer shielding shell and the inner shielding shell are both copper structures with nickel-plated outer surfaces.

4. The electromagnetic pulse shield according to any one of claims 1 to 3, characterized in that: The inner shielding shell and the outer shielding shell are both prism-shaped or cylindrical-shaped; the inner shielding shell and the outer shielding shell are coaxial, and the outer wall of the inner shielding shell and the inner wall of the outer shielding shell are gap-matched.

5. The electromagnetic pulse shielding cover according to claim 4, characterized in that: At least two sealing strips are arranged between the inner wall of the opening end of the outer shielding shell and the outer wall of the open end of the inner shielding shell along the axial direction of the inner shielding shell.

6. The electromagnetic pulse shield according to any one of claims 1 to 3, characterized in that: The lifting device comprises two sets of lifting mechanisms symmetrically arranged on both sides of the outer shielding shell, and any one of the lifting mechanisms comprises: An L-shaped bracket, wherein the L-shaped bracket faces the outer shielding shell; An electric slide is vertically arranged on the inner side of the vertical plate of the L-shaped bracket, and the slider of the electric slide is connected to the side wall of the outer shielding shell through an insulating connecting rod; the motor of the electric slide is communicatively connected to the controller; Both sides of the bottom plate of the inner shielding shell are respectively arranged above the transverse plates of the two groups of L-shaped brackets, so that the center of the bottom plate of the inner shielding shell is suspended in the air.

7. The electromagnetic pulse shield according to claim 6, characterized in that: An anti-dumping vertical plate is arranged on the outer side of the vertical plate of any of the L-shaped brackets.

8. The electromagnetic pulse shield according to claim 6, characterized in that: A wire threading hole is provided in the suspended portion of the bottom plate of the inner shielding shell, and an insulating layer is provided on the inner wall of the wire threading hole. The data line of the temperature detection device passes through the wire threading hole, and shielding plugs are provided at both ends of the wire threading hole. The shielding plugs are used to shield and seal the gap between the data line and the wire threading hole.

9. The electromagnetic pulse shield according to claim 8, characterized in that: The shielding plug is a conical shielding cover, which is a copper structure with nickel-plated outer surface, and the inner wall of the conical shielding cover is provided with an insulating layer; the conical shielding cover is coaxially arranged with the threading hole, the large end of the conical shielding cover is connected to the bottom plate of the inner shielding shell, and the diameter of the large end of the conical shielding cover is larger than the aperture of the threading hole, the diameter of the small end of the conical shielding cover is not smaller than the aperture of the threading hole, and the inner wall of the small end of the conical shielding cover is provided with a sealing rubber ring, and the sealing rubber ring is used to seal the gap between the data cable and the conical shielding cover.

10. The electromagnetic pulse shield according to claim 3, characterized in that: The bottom plate of the inner shielding shell is electrically connected to a grounding wire, and the grounding wire is used to conduct current into the ground.

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