CN211959937U - Low-leakage network switching equipment and electromagnetic protection structure - Google Patents
Low-leakage network switching equipment and electromagnetic protection structure Download PDFInfo
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- CN211959937U CN211959937U CN201922420085.XU CN201922420085U CN211959937U CN 211959937 U CN211959937 U CN 211959937U CN 201922420085 U CN201922420085 U CN 201922420085U CN 211959937 U CN211959937 U CN 211959937U
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Abstract
The application relates to a low-leakage network switching device and an electromagnetic protection structure, wherein the low-leakage network switching device comprises a shielding upper cover, a shielding liner and a shielding lower shell; a network exchange module and a power filter are arranged in a shielding space formed by the shielding upper cover and the shielding lower cover; the shielding lower shell is provided with a communication hole, and the network switching module utilizes the low-leakage communication component to interact with external equipment through the communication hole; the shielding upper cover and the shielding gasket are correspondingly provided with a plurality of through holes, the shielding lower shell is provided with a plurality of fixing holes, and the fixing piece is used for fixing the shielding upper cover, the shielding gasket and the shielding lower shell sequentially through the through holes and the fixing holes of the shielding upper cover and the shielding gasket; the buckling position of the upper shielding cover and the lower shielding shell is provided with a stepped structure. Based on this, if the electromagnetic signal in the shielding space wants to reveal, need pass through the electromagnetism maze that the ladder-shaped structure formed, and the electromagnetism maze can make electromagnetic signal stop in the electromagnetism maze, has eliminated the potential safety hazard that electromagnetic signal revealed away from the shielding space.
Description
Technical Field
The application relates to the technical field of electromagnetic protection, in particular to low-leakage network switching equipment and an electromagnetic protection structure.
Background
With the rapid development of electronic information technology, electronic information devices are applied more and more widely in various industries, and general electronic information devices have the problem of electromagnetic leakage to different degrees.
Electromagnetic leakage refers to the outward diffusion of stray (parasitic) electromagnetic energy of an electronic information device through a wire or space. Electromagnetic leakage, which is an electromagnetic phenomenon that cannot be eliminated, exists in different degrees in any electronic information device in an operating state, and if the leakage carries information processed by the electronic information device, the electromagnetic information leakage is formed. On the premise of meeting certain conditions, the information can be received and restored by using a specific instrument. Thus, these leaks threaten information security once the information involved is confidential.
In view of the above problems, currently, electromagnetic signals are generally weakened to achieve the purpose of electromagnetic protection, but weakened electromagnetic signals may still leak from electronic information equipment, and also have a hidden danger of threatening information security.
SUMMERY OF THE UTILITY MODEL
To overcome at least some of the problems in the related art, the present application provides a low-leakage network switch device and an electromagnetic protection structure.
According to a first aspect of the present application, there is provided an electromagnetic shielding structure comprising: a shield upper cover, a shield gasket, and a shield lower case;
the shielding upper cover and the shielding gasket are correspondingly provided with a plurality of through holes, and the shielding lower shell is provided with a plurality of fixing holes, so that a fixing piece sequentially passes through the through holes of the shielding upper cover, the through holes of the shielding gasket and the fixing holes to fix the shielding upper cover, the shielding gasket and the shielding lower shell; the shielding gasket is arranged between the shielding upper cover and the shielding lower cover;
the buckling position of the upper shielding cover and the lower shielding shell is provided with a stepped structure, so that an electromagnetic labyrinth is formed at the buckling position.
Optionally, the through hole of the upper shielding cover, the through hole of the shielding gasket, the fixing hole and the fixing member, through which the fixing member passes, form a through-wall structure, and a distance between the through-wall structures is smaller than or equal to a preset distance.
Optionally, the shielding lower shell is provided with a plurality of bosses, and the fixing holes are correspondingly formed in the bosses.
Optionally, a radial cross section of the boss on a side, away from the housing, of the lower shielding shell is in a circular arc shape.
Optionally, the stepped structure includes a first stepped surface, a second stepped surface, and a third stepped surface that are disposed from the edge of the shielding upper cover to the center of the shielding upper cover, and a fourth stepped surface and a fifth stepped surface that are disposed on the housing of the shielding lower housing from the edge of the housing to the inside of the housing;
the vertical height from the first step surface to the second step surface is equal to the vertical height from the fourth step surface to the fifth step surface; the shielding gasket is disposed between the second stepped surface and the fifth stepped surface.
Optionally, the shielding upper cover and the shielding lower cover are made of aluminum magnesium alloy.
Optionally, the fixing member is a screw.
Optionally, the through hole of the shielding upper cover includes a first sub through hole and a second sub through hole which are coaxial, the first sub through hole is far away from the shielding lower casing, the axial cross section of the first sub through hole is in the shape of an isosceles trapezoid, and one end of the first sub through hole, which is far away from the shielding lower casing, is a lower bottom of the isosceles trapezoid.
According to a second aspect of the present application, there is provided a low-leakage network switching device, comprising the electromagnetic protection structure according to the first aspect of the present application;
a network exchange module and a power filter are arranged in a shielding space formed by the shielding upper cover and the shielding lower cover; the power supply filter is used for supplying power to the network switching module;
the shielding lower shell is provided with a communication hole, and the network switching module utilizes the low-leakage communication assembly to perform information interaction with external equipment through the communication hole.
Optionally, the low-leakage communication assembly includes a communication shielding gasket and a low-leakage aerial head;
the low-leakage aviation head comprises a plug and a socket, the socket is connected with the network switching module, and an opening of the socket is fixedly arranged facing the communication hole;
the receptacle is inserted into the receptacle sequentially through the communication shield gasket and the communication hole.
The technical scheme provided by the application can comprise the following beneficial effects: the shielding upper cover and the shielding gasket of the electromagnetic protection structure are correspondingly provided with a plurality of through holes, and the shielding lower shell is provided with a plurality of fixing holes, so that a fixing piece sequentially passes through the through holes of the shielding upper cover, the through holes of the shielding gasket and the fixing holes to fix the shielding upper cover, the shielding gasket and the shielding lower shell; the shielding gasket is arranged between the shielding upper cover and the shielding lower cover; the buckling position of the upper shielding cover and the lower shielding shell is provided with a stepped structure, so that an electromagnetic labyrinth is formed at the buckling position. Based on this, if the electromagnetic signal in the shielding space that shielding upper cover and shielding inferior valve constitute were revealed, need pass through the electromagnetism maze that lock department formed, and the electromagnetism maze can make electromagnetic signal stop unable revealing in the electromagnetism maze to the potential safety hazard that the electromagnetic signal revealed away from the shielding space has been eliminated.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of an electromagnetic shielding structure according to a first embodiment of the present application.
Fig. 2 is a schematic structural diagram of an electromagnetic maze forming method according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a stepped structure according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a low-leakage network switching device according to a second embodiment of the present application.
Reference numerals: the shielding structure comprises a shielding upper cover-1, a through hole-11 of the shielding upper cover, a first step surface-12, a second step surface-13, a third step surface-14, a shielding gasket-2, a through hole-21 of the shielding gasket, a shielding lower shell-3, a fixing hole-31, a fourth step surface-32, a fifth step surface-33, an electromagnetic labyrinth-4, a power filter-5, a network exchange module-6, a plug-71, a communication shielding gasket-72 and a socket-73.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
With the rapid development of electronic information technology, electronic information devices are applied more and more widely in various industries, and general electronic information devices have the problem of electromagnetic leakage to different degrees.
Electromagnetic leakage refers to the outward diffusion of stray (parasitic) electromagnetic energy of an electronic information device through a wire or space. Electromagnetic leakage, which is an electromagnetic phenomenon that cannot be eliminated, exists in different degrees in any electronic information device in an operating state, and if the leakage carries information processed by the electronic information device, the electromagnetic information leakage is formed. On the premise of meeting certain conditions, the information can be received and restored by using a specific instrument. Thus, these leaks threaten information security once the information involved is confidential.
In view of the above problems, currently, electromagnetic signals are generally weakened to achieve the purpose of electromagnetic protection, but weakened electromagnetic signals may still leak from electronic information equipment, and also have a hidden danger of threatening information security.
In order to solve the above technical problem, the present application provides a low-leakage network switch device and an electromagnetic protection structure, which are described below by way of embodiments.
Example one
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electromagnetic shielding structure according to an embodiment of the present application; fig. 2 is a schematic structural diagram of an electromagnetic maze forming method according to an embodiment of the present application.
As shown in fig. 1 and 2, the electromagnetic shielding structure provided in this embodiment may include: a shield upper cover 1, a shield gasket 2 and a shield lower cover 3;
the shielding upper cover and the shielding gasket are correspondingly provided with a plurality of through holes, and the shielding lower shell is provided with a plurality of fixing holes, so that a fixing piece sequentially passes through the through holes 11 of the shielding upper cover, the through holes 21 of the shielding gasket and the fixing holes 31 to fix the shielding upper cover, the shielding gasket and the shielding lower shell; the shielding gasket is arranged between the shielding upper cover and the shielding lower cover;
the buckling position of the upper shielding cover and the lower shielding shell is provided with a stepped structure, so that an electromagnetic labyrinth 4 is formed at the buckling position.
In this embodiment, the shielding upper cover and the shielding gasket of the electromagnetic protection structure are correspondingly provided with a plurality of through holes, and the shielding lower shell is provided with a plurality of fixing holes, so that the fixing piece sequentially passes through the through holes of the shielding upper cover, the through holes of the shielding gasket and the fixing holes to fix the shielding upper cover, the shielding gasket and the shielding lower shell; the shielding gasket is arranged between the shielding upper cover and the shielding lower cover; the buckling position of the upper shielding cover and the lower shielding shell is provided with a stepped structure, so that an electromagnetic labyrinth is formed at the buckling position. Based on this, if the electromagnetic signal in the shielding space that shielding upper cover and shielding inferior valve constitute were revealed, need pass through the electromagnetism maze that lock department formed, and the electromagnetism maze can make electromagnetic signal stop unable revealing in the electromagnetism maze to the potential safety hazard that the electromagnetic signal revealed away from the shielding space has been eliminated.
It should be noted that, because the fixing member needs to pass through the through hole of the upper shielding cover, the through hole of the shielding gasket and the fixing hole of the lower shielding shell in sequence, thereby achieving the purpose of fixing the upper shielding cover, the shielding gasket and the lower shielding shell together, therefore, the positions of the through holes of the upper shielding cover, the through holes of the shielding gasket and the fixing holes of the lower shielding shell all correspond, that is, when the upper shielding cover and the lower shielding shell are buckled together and the shielding gasket is located between the upper shielding cover and the lower shielding shell, the fixing member can be fixed into the fixing hole of the lower shielding shell through the through hole of the upper shielding cover and the through hole of the shielding gasket without obstacles. In addition, the sizes of the shield upper cover, the shield gasket, and the shield lower cover are matched with each other.
Specifically, referring to fig. 3, fig. 3 is a schematic structural diagram of a ladder structure according to an embodiment of the present disclosure.
As shown in fig. 3, the stepped structure of the present embodiment may include a first stepped surface 12, a second stepped surface 13, and a third stepped surface 14 provided on the shield upper cover from the edge of the shield upper cover to the center of the shield upper cover, and a fourth stepped surface 32 and a fifth stepped surface 33 provided on the housing of the shield lower cover from the edge of the housing to the inside of the housing; the vertical height from the first step surface to the second step surface is equal to the vertical height from the fourth step surface to the fifth step surface; the shielding gasket is disposed between the second stepped surface and the fifth stepped surface.
Of course, the stepped structure is not limited to the specific structure given in this embodiment, and there may be more stepped surfaces, and the positional relationship of each stepped surface is only required to form the electromagnetic labyrinth.
In addition, the through hole of the shielding upper cover, the through hole of the shielding gasket, the fixing hole and the fixing member, through which the fixing member passes, form a through-wall structure, and in order to ensure the reliability of shielding, the distance between the through-wall structures should be less than or equal to a preset distance.
In order to increase the area of the shield, a plurality of bosses may be provided on the shield lower case, and the fixing holes may be provided on the bosses. The radial cross section of the boss, which is far away from one side of the shell of the shielding lower shell, is in a circular arc shape. The arc shape can ensure the minimum space occupied under the condition of the same area.
It should be noted that the materials of the upper shielding cover and the lower shielding cover need to be materials capable of shielding electromagnetic signals, such as aluminum magnesium alloy.
In addition, the fixing member may be of various types, such as a screw, or the like. When the fixing piece is a screw, the through hole of the shielding upper cover can comprise a first sub through hole and a second sub through hole which are coaxial, the first sub through hole is far away from the shielding lower shell, the axial section of the first sub through hole is in the shape of an isosceles trapezoid, and one end of the first sub through hole, which is far away from the shielding lower shell, is a lower bottom of the isosceles trapezoid. Because the first sub through hole is in the shape of an isosceles trapezoid and one end far away from the shielding lower shell is the lower bottom of the isosceles trapezoid, when the screw is fixed into the fixing hole, the nut of the screw abuts against the waist of the isosceles trapezoid, and therefore the purpose that the shielding upper cover is tightly buckled on the shielding lower shell is achieved. Of course, the fastening of the screw in the fastening bore can be realized by means of a thread.
Example two
Referring to fig. 4, fig. 4 is a schematic structural diagram of a low-leakage network switching device according to a second embodiment of the present application.
As shown in fig. 4, the low-leakage network switching device provided in this embodiment may include:
the electromagnetic protection structure provided by the first embodiment of the application;
a network exchange module 6 and a power filter 5 are arranged in a shielding space formed by the shielding upper cover and the shielding lower cover; the power supply filter is used for supplying power to the network switching module;
the shielding lower shell is provided with a communication hole, and the network switching module utilizes the low-leakage communication assembly to perform information interaction with external equipment through the communication hole.
In this embodiment, set up network exchange module and power filter in electromagnetic protection structure's shielding space, and network exchange module utilizes to leak low communication assembly to pass through the communication hole carries out the information interaction with external equipment, based on this, utilize power filter to provide the electromagnetic information that network exchange module can weaken network exchange module production when information processing to network exchange module, simultaneously, power filter and network exchange module set up in electromagnetic protection structure's shielding space, can make the electromagnetic information of weakening stop in electromagnetic protection structure's electromagnetic maze, can't reveal away, eliminated the potential safety hazard that electromagnetic signal revealed away from shielding space.
It should be noted that the low-leakage communication assembly includes the communication shielding gasket 72 and the low-leakage aircraft head; the low-leakage aircraft head comprises a plug 71 and a socket 73, the socket is connected with the network switching module, and an opening of the socket is fixedly arranged facing the communication hole; the receptacle is inserted into the receptacle sequentially through the communication shield gasket and the communication hole.
At present, in the field of low-leakage devices, existing low-leakage devices are generally independent devices such as a low-leakage computer and a low-leakage printer, and the low-leakage devices cannot perform information interaction on the premise of meeting a low-leakage requirement, but the low-leakage network switching device in the embodiment can enable the radiation emission limit of the low-leakage network switching device in the embodiment to meet the Gjb 4216-2001C-level requirement by means of the electromagnetic protection structure provided by the embodiment, the weakening of electromagnetic information by the power filter, and the interaction with the network switching module inside the electromagnetic protection structure through the low-leakage aerial header. The existing low-leakage equipment carries out networking through the low-leakage network switching equipment of the embodiment, so that the low-leakage performance of a networking system is better.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. An electromagnetic shielding structure, comprising: a shield upper cover, a shield gasket, and a shield lower case;
the shielding upper cover and the shielding gasket are correspondingly provided with a plurality of through holes, and the shielding lower shell is provided with a plurality of fixing holes, so that the fixing piece sequentially passes through the through holes of the shielding upper cover, the through holes of the shielding gasket and the fixing holes to fix the shielding upper cover, the shielding gasket and the shielding lower shell; the shielding gasket is arranged between the shielding upper cover and the shielding lower cover;
the buckling position of the upper shielding cover and the lower shielding shell is provided with a stepped structure, so that an electromagnetic labyrinth is formed at the buckling position.
2. The electromagnetic protection structure according to claim 1, wherein the through hole of the shielding top cover, the through hole of the shielding gasket and the fixing hole, through which the fixing member passes, and the fixing member constitute a through-wall structure, and a distance between the through-wall structures is smaller than or equal to a predetermined interval.
3. The electromagnetic protection structure according to claim 1, wherein the shielding lower shell is provided with a plurality of bosses, and the fixing holes are correspondingly arranged on the bosses.
4. The electromagnetic protection structure according to claim 3, wherein a radial cross section of the boss on a side of the housing away from the lower shielding shell is in a shape of a circular arc.
5. The electromagnetic protection structure according to claim 1, wherein the stepped structure comprises a first stepped surface, a second stepped surface and a third stepped surface which are arranged on the shielding upper cover from the edge of the shielding upper cover to the center of the shielding upper cover, and a fourth stepped surface and a fifth stepped surface which are arranged on the housing of the shielding lower cover from the edge of the housing to the inside of the housing;
the vertical height from the first step surface to the second step surface is equal to the vertical height from the fourth step surface to the fifth step surface; the shielding gasket is disposed between the second stepped surface and the fifth stepped surface.
6. The electromagnetic protection structure according to claim 1, wherein the material of the shielding upper cover and the shielding lower cover is aluminum magnesium alloy.
7. The electromagnetic shielding structure of claim 1 wherein the fasteners are screws.
8. The electromagnetic protection structure according to claim 7, wherein the through holes of the shielding upper cover include a first sub through hole and a second sub through hole which are coaxial, the first sub through hole is far away from the shielding lower shell, the axial cross-sectional shape of the first sub through hole is an isosceles trapezoid, and one end of the first sub through hole far away from the shielding lower shell is a bottom of the isosceles trapezoid.
9. A low-leakage network switching device, comprising an electromagnetic protection structure according to any one of claims 1 to 8;
a network exchange module and a power filter are arranged in a shielding space formed by the shielding upper cover and the shielding lower cover; the power supply filter is used for supplying power to the network switching module;
the shielding lower shell is provided with a communication hole, and the network switching module utilizes the low-leakage communication assembly to perform information interaction with external equipment through the communication hole.
10. The low-leakage network switching device of claim 9, wherein said low-leakage communication component comprises a communication shielding gasket and a low-leakage aviation header;
the low-leakage aviation head comprises a plug and a socket, the socket is connected with the network switching module, and an opening of the socket is fixedly arranged facing the communication hole;
the receptacle is inserted into the receptacle sequentially through the communication shield gasket and the communication hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922420085.XU CN211959937U (en) | 2019-12-26 | 2019-12-26 | Low-leakage network switching equipment and electromagnetic protection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922420085.XU CN211959937U (en) | 2019-12-26 | 2019-12-26 | Low-leakage network switching equipment and electromagnetic protection structure |
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| CN211959937U true CN211959937U (en) | 2020-11-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110933924A (en) * | 2019-12-26 | 2020-03-27 | 安方高科电磁安全技术(北京)有限公司 | Low-leakage network switching equipment and electromagnetic protection structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110933924A (en) * | 2019-12-26 | 2020-03-27 | 安方高科电磁安全技术(北京)有限公司 | Low-leakage network switching equipment and electromagnetic protection structure |
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