CN111587060A - Shielding insulation waveguide window assembly and shielding insulation box - Google Patents
Shielding insulation waveguide window assembly and shielding insulation box Download PDFInfo
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- CN111587060A CN111587060A CN202010537446.3A CN202010537446A CN111587060A CN 111587060 A CN111587060 A CN 111587060A CN 202010537446 A CN202010537446 A CN 202010537446A CN 111587060 A CN111587060 A CN 111587060A
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- waveguide window
- shielding
- peripheral edge
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- window assembly
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a shielding insulation waveguide window assembly which comprises multilayer waveguide window bodies arranged in a layered mode, wherein a gap is formed between every two adjacent layers of waveguide window bodies, an insulation support is arranged in each gap, each layer of waveguide window body is sequentially and correspondingly arranged at an installation opening of a multilayer shielding plate, and the multilayer shielding plates are mutually insulated. In order to achieve the effect of multi-layer shielding, insulation treatment is carried out between the shielding layers to prevent the coupling between the shielding layers from damaging the effect of electromagnetic wave reflection attenuation. Through setting up the waveguide window body of multilayer, and be provided with insulating support between the adjacent waveguide window body, promote shielding efficiency, realized the real multilayer electromagnetic shield. The invention also discloses a shielding insulation box comprising the assembly.
Description
Technical Field
The invention relates to the field of shielding and insulating equipment, in particular to a shielding and insulating waveguide window assembly. In addition, the invention also relates to a shielding insulation box comprising the assembly.
Background
The electromagnetic shielding technology mainly utilizes the eddy current effect of a metal conductor and the skin effect of electromagnetic waves on the surface of a good conductor, and a metal shielding cavity with a certain thickness is used for sealing equipment. However, since the electronic device or the control system in operation generates heat, the heat dissipation requirements of the components need to be considered to avoid the influence of the continuous temperature rise of the related components on the working performance, and therefore, it is necessary to design a structural member with dual functions of high shielding property and heat dissipation performance.
In the prior art, regular hexagon, rectangular and circular waveguide windows are widely applied, and can be reasonably selected and used in combination with actual conditions. However, when the working frequency range is higher, the cut-off frequency needs to be increased by reducing the aperture of the waveguide window, so as to achieve the purpose of improving the shielding property, but the waveguide window must have a hole, and the mode region corresponding to the increase of the cut-off frequency is correspondingly widened, so that the wave mode conforming to the waveguide mode distribution can pass through the hole and be transmitted to other media, thereby generating electromagnetic radiation pollution.
Therefore, how to provide a shielded insulated waveguide window assembly with effectively improved shielding effect is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a shielding and insulating waveguide window assembly, which improves the shielding efficiency by arranging a plurality of layers of waveguide window bodies and arranging an insulating support between adjacent waveguide window bodies. It is a further object of the present invention to provide a shielded insulated box including the above assembly.
In order to solve the technical problem, the invention provides a shielding and insulating waveguide window assembly which comprises a plurality of layers of waveguide window bodies arranged in a layered mode, wherein a gap is formed between every two adjacent layers of waveguide window bodies, an insulating support is arranged in each gap, each layer of waveguide window body is sequentially and correspondingly arranged at an installation opening of a plurality of layers of shielding plates, and the plurality of layers of shielding plates are mutually insulated.
Preferably, an outer periphery of each of the waveguide window bodies is provided with a connecting bracket, an inner peripheral edge of the connecting bracket being connected to an outer peripheral edge of the waveguide window body, and the outer peripheral edge of the connecting bracket being connected to an inner peripheral edge of the installation opening.
Preferably, an inner peripheral edge of the connecting bracket matches in shape to an outer peripheral edge of the waveguide window body, and an outer peripheral edge of the connecting bracket matches in shape to an inner peripheral edge of the mounting opening.
Preferably, the waveguide window body is rectangular plate-shaped, the mounting opening is a rectangular opening, and the connecting bracket is rectangular frame-shaped.
Preferably, the connection bracket is a rectangular channel steel frame, an opening of the channel steel structure faces outdoors, and the connection bracket is welded to the shielding plate and the waveguide window body.
Preferably, the shielding plate comprises two layers of shielding plates, and a first layer of waveguide window and a second layer of waveguide window which are correspondingly arranged, wherein the first layer of waveguide window faces outdoors.
Preferably, the installation openings of the plurality of layers of the shielding plates have the same size, and the center perpendicular lines coincide with each other, and the plurality of layers of the waveguide window bodies are arranged oppositely.
Preferably, the waveguide window body is specifically an iron-nickel alloy tin-dipped waveguide window, the shielding plate is specifically a galvanized steel plate, and the insulating support is specifically an FR4 insulating material.
Preferably, the insulating support is a frame structure formed by surrounding a plate-shaped piece, and the insulating support is positioned at the peripheral edge of the connecting support and is matched with the peripheral edge of the connecting support in shape.
The invention provides a shielding insulation box, which comprises a plurality of layers of shielding plates arranged in a layered mode and a shielding insulation waveguide window assembly arranged on the shielding plates, wherein the shielding insulation waveguide window assembly is specifically any one of the shielding insulation waveguide window assemblies.
The invention provides a shielding insulation waveguide window assembly which comprises multilayer waveguide window bodies arranged in a layered mode, wherein a gap is formed between every two adjacent layers of waveguide window bodies, an insulation support is arranged in each gap, each layer of waveguide window body is sequentially and correspondingly arranged at an installation opening of a multilayer shielding plate, and the multilayer shielding plates are mutually insulated.
The shielding effectiveness is the ratio of the electromagnetic wave energy which is incident to the material when the shielding is not carried out to the electromagnetic wave energy which is shielded at the same place, namely the attenuation value of the shielding material to the electromagnetic signal, and the larger the attenuation value is, the better the shielding effectiveness is. According to the formula W, the shielding effectiveness W is the sum of three components, wherein the energy loss of the electromagnetic wave reflected when the electromagnetic wave just enters the shielding body is reflection attenuation R, the energy attenuation of the electromagnetic wave transmitted into the shielding body in the propagation process inside the shielding body is absorption attenuation a, the loss of the electromagnetic wave energy caused by multiple reflections between the shielding body layers is multiple reflection attenuation B, and the shielding effectiveness of the multi-layer shielding is greater than that of the single-layer shielding because the single-layer shielding layer does not have reflection attenuation B. However, when only the multilayer waveguide window is provided and adjacent waveguide windows are in direct contact without insulation, the actual shielding effect is equivalent to a single-layer waveguide window. In order to achieve the effect of multi-layer shielding, insulation treatment is carried out between the shielding layers to prevent the coupling between the shielding layers from damaging the effect of electromagnetic wave reflection attenuation. Through setting up the waveguide window body of multilayer, and be provided with insulating support between the adjacent waveguide window body, promote shielding efficiency, realized the real multilayer electromagnetic shield.
The invention provides a shielding and insulating box comprising the assembly, and the assembly has the technical effects, so the shielding and insulating box also has the same technical effects, and the detailed description is omitted.
Drawings
FIG. 1 is a front cross-sectional view of one embodiment of a shielded insulated waveguide window assembly in accordance with the present invention;
FIG. 2 is a schematic top view of one embodiment of a shielded insulated waveguide window assembly according to the present invention.
Detailed Description
The core of the invention is to provide a shielding insulation waveguide window assembly, which improves the shielding efficiency by arranging a plurality of layers of waveguide window bodies and arranging an insulation bracket between adjacent waveguide window bodies. Another core of the present invention is to provide a shielded insulated box comprising the above assembly.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, fig. 1 is a front sectional view of one embodiment of a shielded insulated waveguide window assembly according to the present invention; FIG. 2 is a schematic top view of one embodiment of a shielded insulated waveguide window assembly according to the present invention.
The invention provides a shielding and insulating waveguide window assembly, which comprises a multilayer waveguide window body 1 arranged in a layered mode, wherein the multilayer waveguide window body 1 is arranged on a shielding plate 3 of a shielding and insulating box and is correspondingly provided with the multilayer shielding plate 3, the multilayer shielding plates 3 are mutually insulated, and the insulation can be realized by arranging interval insulation or arranging insulating materials. All be provided with the installation opening on every layer of shield plate 3, each layer waveguide window body 1 corresponds in proper order and installs in the installation opening part of multilayer shield plate 3, all is provided with the interval between the two-layer waveguide window body 1 that is adjacent simultaneously, all is provided with insulating support 2 in every interval.
The shielding effectiveness is the ratio of the electromagnetic wave energy which is incident to the material when the shielding is not carried out to the electromagnetic wave energy which is shielded at the same place, namely the attenuation value of the shielding material to the electromagnetic signal, and the larger the attenuation value is, the better the shielding effectiveness is. According to the formula W, the shielding effectiveness W is the sum of three components, wherein the energy loss of the electromagnetic wave reflected when the electromagnetic wave just enters the shielding body is reflection attenuation R, the energy attenuation of the electromagnetic wave transmitted into the shielding body in the propagation process inside the shielding body is absorption attenuation a, the loss of the electromagnetic wave energy caused by multiple reflections between the shielding body layers is multiple reflection attenuation B, and the shielding effectiveness of the multi-layer shielding is greater than that of the single-layer shielding because the single-layer shielding layer does not have reflection attenuation B. However, when only the multilayer waveguide window is provided and adjacent waveguide windows are in direct contact without insulation, the actual shielding effect is equivalent to a single-layer waveguide window. In order to achieve the effect of multi-layer shielding, insulation treatment is carried out between the shielding layers to prevent the coupling between the shielding layers from damaging the effect of electromagnetic wave reflection attenuation. Through setting up multilayer waveguide window body 1, and be provided with insulating support 2 between the adjacent waveguide window body 1, promote shielding efficiency, realized the multilayer electromagnetic shield in the true sense.
In order to ensure stable connection of the waveguide window bodies 1, the outer periphery of each waveguide window body 1 is provided with a connecting bracket 4, the inner peripheral edge of the connecting bracket 4 is connected with the outer peripheral edge of the waveguide window body 1, and the outer peripheral edge of the connecting bracket 4 is connected with the inner peripheral edge of the installation opening.
The inner peripheral edge of the connecting bracket 4 is matched in shape with the outer peripheral edge of the waveguide window body 1, and the outer peripheral edge of the connecting bracket 4 is matched in shape with the inner peripheral edge of the mounting opening, thereby ensuring a good shielding effect. The connecting bracket 4 may not be provided, and the waveguide window body 1 is directly installed at the installation opening.
In the shielded and insulated waveguide window assembly according to the embodiment of the present invention, the waveguide window body 1 has a rectangular plate shape, the rectangular plates are parallel to each other and cover the rectangular opening at the installation opening, the rectangular frame-shaped connection bracket 4 is disposed around the waveguide window body 1, and the connection bracket 4 is filled in the gap between the waveguide window body 1 and the installation opening. Or the shapes of the components, such as the circular waveguide window body 1 or the hexagonal waveguide window body 1, are adjusted according to the circumstances, and the like, are all within the protection scope of the present invention.
Specifically, the connecting bracket 4 is a rectangular channel steel frame, the channel steel structure is formed by a 1mm thin steel plate, an opening of the channel steel structure faces outdoors, and the connecting bracket 4 is welded to the shielding plate 3 and the waveguide window body 1.
Preferably, two layers of shielding plates 3 can be arranged, and a first layer of waveguide window and a second layer of waveguide window are correspondingly arranged, wherein the first layer of waveguide window faces outdoors. And the shielding effect can be further improved by adjusting three waveguide windows or more.
The mounting openings of the multilayer shielding plate 3 are the same in size, and the center perpendicular lines coincide with each other, namely, a plurality of mounting openings directly penetrate through the inside and outside of the shielding plate 2, the mounting openings are opposite and cannot be staggered with each other, and then the multilayer waveguide window body 1 can also be arranged relatively and located at the same perspective position and cannot be staggered with each other. Or the mounting openings are staggered with each other and gradually change in size, which are all within the protection scope of the invention.
The waveguide window body 1 is specifically an iron-nickel alloy tin-dipped waveguide window, the shielding plate 3 is specifically a galvanized steel plate, the thickness of the first layer of shielding plate 3 is 1.2mm, the thickness of the second layer of shielding plate 3 is 0.8mm, a Faraday cage is formed, and electromagnetic signals are isolated. The insulating bracket 2 is made of FR4 insulating material, and has a height of 50mm and a thickness of 10 mm. The dimensions of the various components can also be adjusted as appropriate.
On the basis of the shielded and insulated waveguide window assembly provided by each embodiment, the insulating support 2 is a frame structure formed by surrounding a plate-shaped member, that is, a rectangular sleeve is formed, the upper side and the lower side of the rectangular sleeve are respectively connected with the adjacent connecting supports 4, so as to separate and support the shielding plate 3 and the waveguide window body 1 of each layer, and the insulating support 2 is located at the peripheral edge of the connecting support 4 and is matched with the peripheral edge of the connecting support 4 in shape.
In addition to the above-mentioned shielded waveguide window assembly, the present invention also provides a shielded box including the above-mentioned shielded waveguide window assembly, and the structure of other parts of the shielded box is referred to the prior art and is not described herein again.
The above description describes the shielded waveguide window assembly and the shielded box in detail. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a shielding insulation waveguide window assembly, its characterized in that, including multilayer waveguide window body (1) of layering setting, adjacent two-layerly all be provided with the interval between waveguide window body (1), all be provided with insulating support (2) in the interval, each layer waveguide window body (1) corresponds in proper order and installs in the erection orifice department of multilayer shield plate (3), the multilayer mutual insulation between shield plate (3).
2. The shielded insulated waveguide window assembly according to claim 1, wherein the outer periphery of each of the waveguide window bodies (1) is provided with a connecting bracket (4), an inner peripheral edge of the connecting bracket (4) being connected to an outer peripheral edge of the waveguide window body (1), and an outer peripheral edge of the connecting bracket (4) being connected to an inner peripheral edge of the mounting opening.
3. The shielded insulated waveguide window assembly of claim 2, wherein the inner peripheral edge of the connecting bracket (4) matches the shape of the outer peripheral edge of the waveguide window body (1), and the outer peripheral edge of the connecting bracket (4) matches the shape of the inner peripheral edge of the mounting opening.
4. A shielded insulated waveguide window assembly according to claim 3, wherein the waveguide window body (1) is rectangular plate-shaped, the mounting opening is a rectangular opening, and the connection bracket (4) is rectangular frame-shaped.
5. The shielded insulated waveguide window assembly according to claim 4, wherein the connection bracket (4) is embodied as a rectangular channel steel frame, the channel steel structure opening towards the outside, the connection bracket (4) being welded to the shield plate (3) and the waveguide window body (1).
6. The shielded insulated waveguide window assembly according to claim 2, comprising two layers of said shielding plates (3) and a first layer of waveguide window and a second layer of waveguide window arranged correspondingly, said first layer of waveguide window facing outdoors.
7. The shielded insulated waveguide window assembly according to claim 2, wherein the installation openings of the plurality of layers of the shielding plates (3) are identical in size and center perpendicular lines coincide with each other, and the plurality of layers of the waveguide window bodies (1) are disposed opposite to each other.
8. The shielded insulated waveguide window assembly of claim 2, wherein the waveguide window body (1) is in particular an iron-nickel alloy immersion tin waveguide window, the shielding plate (3) is in particular a galvanized steel plate, and the insulating support (2) is in particular FR4 insulating material.
9. The shielded insulated waveguide window assembly according to any one of claims 2 to 8, wherein the insulating support (2) is embodied as a frame structure around which a plate-shaped member is formed, the insulating support (2) being located at an outer circumferential edge of the connecting support (4) in a shape matching an outer circumferential edge of the connecting support (4).
10. A shielded enclosure comprising a plurality of layered shielding plates (3) and a shielded waveguide window assembly mounted on the shielding plates (3), the shielded waveguide window assembly being as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010537446.3A CN111587060A (en) | 2020-06-12 | 2020-06-12 | Shielding insulation waveguide window assembly and shielding insulation box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010537446.3A CN111587060A (en) | 2020-06-12 | 2020-06-12 | Shielding insulation waveguide window assembly and shielding insulation box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111587060A true CN111587060A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010537446.3A Pending CN111587060A (en) | 2020-06-12 | 2020-06-12 | Shielding insulation waveguide window assembly and shielding insulation box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111587060A (en) |
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2020
- 2020-06-12 CN CN202010537446.3A patent/CN111587060A/en active Pending
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