CN217241245U - Electromagnetic shielding device - Google Patents
Electromagnetic shielding device Download PDFInfo
- Publication number
- CN217241245U CN217241245U CN202122986353.1U CN202122986353U CN217241245U CN 217241245 U CN217241245 U CN 217241245U CN 202122986353 U CN202122986353 U CN 202122986353U CN 217241245 U CN217241245 U CN 217241245U
- Authority
- CN
- China
- Prior art keywords
- groove
- panel
- shielding
- plate
- electromagnetic shielding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses an electromagnetic shielding device, which comprises a panel, a supporting frame, a first shielding screen plate and a second shielding screen plate; a first through groove is formed in the panel and penetrates through the panel along the thickness direction of the panel; the supporting frame is a hollow cylinder, and one free end of the supporting frame is fixedly connected with the panel; the first shielding mesh plate is fixed in the panel; the second shielding mesh plate is fixed in the other free end of the support frame. The utility model discloses an electromagnetic shield device can effectively shield the electromagnetic wave, does not influence communication equipment's normal structure and normal use, and has ventilation effect, simple structure, and it is convenient to make.
Description
Technical Field
The utility model relates to an electromagnetic shield technical field, in particular to electromagnetic shield device.
Background
Some precise electromagnetic devices, such as an electron microscope, a PIM (passive intermodulation interference) test, a nuclear magnetic resonance apparatus, a CT apparatus, etc., need to work in an electromagnetically shielded closed environment, and in order to ensure indoor ventilation, a plurality of ventilation windows are installed for ventilation. In order to ensure that the indoor detection equipment is not interfered by external electromagnetic signals or prevent indoor signals from leaking, the window is used for ensuring that the external signals cannot enter the room and the indoor signals cannot leak.
The waveguide window is a ventilation device applied to the environments, is a main channel for exchanging indoor air with the outside, and can effectively cut off and shield electromagnetic wave signals on the premise of ensuring ventilation and heat dissipation. The shielding effect and the ventilation and heat dissipation effect of the conventional waveguide window are poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electromagnetic shield device has more number shielding effect and ventilation effect.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: an electromagnetic shielding device comprises a panel, a supporting frame, a first shielding screen plate and a second shielding screen plate; a first through groove is formed in the panel and penetrates through the panel along the thickness direction of the panel; the supporting frame is a hollow cylinder, and one free end of the supporting frame is fixedly connected with the panel; the first shielding mesh plate is fixed in the panel; the second shielding mesh plate is fixed in the other free end of the support frame.
Furthermore, one or two net surfaces of the first shielding net plate are provided with metal burrs; when a metal burr is arranged on one screen surface of the first shielding screen plate, the screen surface faces the outer side of the electromagnetic shielding device.
Furthermore, one or two net surfaces of the second shielding net plate are provided with metal burrs; when a mesh surface of the second shielding mesh plate is provided with metal burrs, the mesh surface faces the outer side of the electromagnetic shielding device.
Furthermore, the first shielding screen plate and the second shielding screen plate comprise a plurality of metal corrugated sheets, and every two of the plurality of metal corrugated sheets are buckled with each other to form a plurality of through holes.
Furthermore, the plurality of metal corrugated sheets are buckled with each other pairwise to form a plurality of honeycombed through holes.
Furthermore, the metal corrugated sheets which are buckled in pairs are fixed by welding.
Furthermore, a second through groove is formed in the supporting frame; the groove wall of the second through groove is flush with the groove wall of the first through groove.
Furthermore, a first groove is arranged on one flat plate surface of the panel; the first through groove is arranged in the range of the first groove; the first shielding mesh plate is fixed in the first groove of the panel through welding.
Furthermore, a second groove is formed in the other free end of the support frame; the second through groove is arranged in the range of the second groove; the second shielding mesh plate is fixed in the second groove of the support frame through welding.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses an electromagnetic shield device can effectively shield the electromagnetic wave, does not influence communication equipment's normal structure and normal use, and has ventilation effect, simple structure, and it is convenient to make.
Drawings
Fig. 1 is a schematic structural view of an electromagnetic shielding device of the present invention;
fig. 2 is a sectional view taken along the direction B-B in fig. 1.
Detailed Description
The following detailed description is given to the embodiments of the present invention with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length h", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Referring to fig. 1 and 2, the utility model discloses an electromagnetic shielding device, including panel 1, with panel 1 fixed connection's support frame 2, fix the first shielding otter board 3 in panel 1 and fix the second shielding otter board 4 in support frame 2.
Panel 1 is the metal sheet, is equipped with first recess and first logical groove on the panel 1. The first groove is sunken from one flat plate surface to the other flat plate surface of the panel 1, and the first through groove is arranged in the range of the first groove and penetrates through the panel 1 along the thickness direction of the panel 1.
The support frame 2 is a hollow cylinder. The inside second through-groove that has of support frame 2, the second is led to the groove and is run through support frame 2 along 2 axial directions of support frame. One free end of support frame 2 and panel 1 fixed connection, another free end is equipped with the second recess, and the second leads to the groove and sets up in the within range of first recess, and when support frame 2 and panel 1 fixed connection back, the cell wall that the groove was led to the second is parallel and level with the cell wall that the groove was led to the first.
The first shielding net plate 3 comprises a plurality of metal corrugated sheets, a plurality of through holes are formed by pairwise buckling of the plurality of metal corrugated sheets, and the metal corrugated sheets of the pairwise buckling are fixed through welding. Preferably, the plurality of metal corrugated sheets which are buckled in pairs form a plurality of honeycombed through holes.
The first screen mesh 3 is fixed in the first groove of the panel 1 by welding. One or two mesh surfaces of the first shielding mesh plate 3 are provided with metal burrs, and when only one mesh surface of the first shielding mesh plate 3 is provided with the metal burrs, the mesh surface faces the outer side of the electromagnetic wave shielding.
The second shielding mesh plate 4 is fixed in the second groove of the support frame 2 by welding. The second screen panel 4 is identical in structure to the first screen panel 3 and will not be described in detail here.
By arranging the metal burrs on the first shielding mesh plate 3 and the second shielding mesh plate 4, the signal shielding effect of the electromagnetic shielding device can be improved by about 10%. The metal burrs may be formed during the production of the corrugated metal sheet or may be produced on the honeycomb body 2.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. An electromagnetic shielding device, characterized by:
the screen comprises a panel, a support frame, a first shielding screen plate and a second shielding screen plate;
a first through groove is formed in the panel and penetrates through the panel along the thickness direction of the panel;
the supporting frame is a hollow cylinder, and one free end of the supporting frame is fixedly connected with the panel;
the first shielding mesh plate is fixed in the panel;
the second shielding mesh plate is fixed in the other free end of the support frame.
2. The electromagnetic shielding device of claim 1, wherein:
one or two net surfaces of the first shielding net plate are provided with metal burrs;
when a mesh surface of the first shielding mesh plate is provided with metal burrs, the mesh surface faces the outer side of the electromagnetic shielding device.
3. The electromagnetic shielding device according to claim 1, wherein:
one or two net surfaces of the second shielding net plate are provided with metal burrs;
when a mesh surface of the second shielding mesh plate is provided with metal burrs, the mesh surface faces the outer side of the electromagnetic shielding device.
4. The electromagnetic shielding device according to claim 1, wherein:
the first shielding screen plate and the second shielding screen plate respectively comprise a plurality of metal corrugated sheets, and the plurality of metal corrugated sheets are buckled pairwise to form a plurality of through holes.
5. The electromagnetic shielding device according to claim 4, wherein:
the plurality of metal corrugated sheets are buckled with each other pairwise to form a plurality of honeycombed through holes.
6. The electromagnetic shielding device according to claim 4, wherein:
and the two metal corrugated sheets which are buckled in pairs are fixed by welding.
7. The electromagnetic shielding device of claim 1, wherein:
the support frame is internally provided with a second through groove;
the groove wall of the second through groove is flush with the groove wall of the first through groove.
8. The electromagnetic shielding device of claim 1, wherein:
a first groove is formed in one flat plate surface of the panel;
the first through groove is arranged in the range of the first groove;
the first shielding mesh plate is fixed in the first groove of the panel through welding.
9. The electromagnetic shielding device of claim 7, wherein:
the other free end of the support frame is provided with a second groove;
the second through groove is arranged in the range of the second groove;
the second shielding mesh plate is fixed in the second groove of the support frame through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122986353.1U CN217241245U (en) | 2021-12-01 | 2021-12-01 | Electromagnetic shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122986353.1U CN217241245U (en) | 2021-12-01 | 2021-12-01 | Electromagnetic shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217241245U true CN217241245U (en) | 2022-08-19 |
Family
ID=82816565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122986353.1U Active CN217241245U (en) | 2021-12-01 | 2021-12-01 | Electromagnetic shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217241245U (en) |
-
2021
- 2021-12-01 CN CN202122986353.1U patent/CN217241245U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6947294B2 (en) | EMI-attenuating air ventilation panel | |
| CN217241245U (en) | Electromagnetic shielding device | |
| CN216650388U (en) | Waveguide window | |
| CN208971906U (en) | A kind of magnesium alloy electromagnetic shielding chamber | |
| US9832918B2 (en) | EMR absorbing server vent | |
| CN105280259A (en) | Frame of radiation prevention device and manufacture method thereof | |
| CN212690470U (en) | Noise reduction structure, volute, fan and range hood | |
| CN214852572U (en) | Filtering ventilation board with strong electromagnetic shielding capability | |
| CN206542678U (en) | The anti-shielding of tool and the track traffic control rack of self heat dissipation function | |
| CN110164567A (en) | A kind of PWR fuel assembly screen work and the fuel assembly with this screen work | |
| CN221010613U (en) | Electromagnetic shielding machine room air inlet and outlet device | |
| CN217064455U (en) | Anti-interference equipment for refrigerator control panel | |
| CN212968716U (en) | Low-voltage switch cabinet with base stable in structure | |
| CN207538245U (en) | A kind of novel electromagnetic shielding wall body structure | |
| CN206984292U (en) | A kind of air grid peculiar to vessel with electro-magnetic screen function | |
| CN219319441U (en) | Vehicle-mounted navigation equipment based on Beidou navigation system | |
| CN218070450U (en) | Vertical integration network interface | |
| CN218814934U (en) | Aluminum profile structure for shielding chamber | |
| CN214382046U (en) | Aluminum shielding ventilating plate | |
| CN214429821U (en) | Novel microwave radio frequency is supplementary device | |
| CN218499514U (en) | Remove shelter with anti-electromagnetic shielding roof | |
| CN212851647U (en) | Assembled electromagnetic shielding waveguide window | |
| CN218104064U (en) | Shielding filtering structure | |
| CN215991802U (en) | Single-channel low-noise differential preamplifier | |
| CN218959386U (en) | Electromagnetic shielding chamber with layered protection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |