CN203057782U - Electromagnetic shielding device - Google Patents
Electromagnetic shielding device Download PDFInfo
- Publication number
- CN203057782U CN203057782U CN 201320043901 CN201320043901U CN203057782U CN 203057782 U CN203057782 U CN 203057782U CN 201320043901 CN201320043901 CN 201320043901 CN 201320043901 U CN201320043901 U CN 201320043901U CN 203057782 U CN203057782 U CN 203057782U
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- China
- Prior art keywords
- cover plate
- line
- shielding cover
- circuit board
- shielding
- Prior art date
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- Expired - Fee Related
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses an electromagnetic shielding device, which comprises a main shielding cover plate, a through line shielding cover plate, a lower connection piece and a circuit board, wherein the circuit board is arranged in a shielding chamber enclosed by the main shielding cover plate, the through line shielding cover plate and the lower connection piece are fixed at two ends of the main shielding cover plate respectively, the through line shielding cover plate is a hollow box body and is provided with a box body opening, an end cover buckled on the box body opening and a first line inlet hole communicated with the shielding chamber, and the lower connection piece is provided with a first line outlet hole communicated with the shielding chamber. According to the electromagnetic shielding device, through line holes adopt a combined detachable structure, so that apparatus line passing and assembly and disassembly of the circuit board are facilitated.
Description
Technical field
The utility model relates to the electromagnetic screen in a kind of logger.
Background technology
Array side to the electromagnetic interference sensitivity, need be carried out electromagnetic shielding to instrument data collection and processing module.Existing shielding construction space availability ratio is low, can not satisfy and newly develop instrument collection and processing module installation and cross the line requirement.Simultaneously, existing electromagnetic armouring structure adopts side-wall hole to cross the line mode, and circuit board bonding wire and dismounting are very inconvenient.
The utility model content
In order to solve the problems of the technologies described above, the utility model discloses a kind of electromagnetic screen, adopt the composite type demountable structure, be convenient to instrument and cross line and circuit board dismounting.
The disclosed electromagnetic screen of the utility model, comprise the main shield cover plate, cross line shielding cover board and following connector and be arranged on the interior circuit board of shielded enclosure that described main shield cover plate surrounds, described line shielding cover board excessively and following connector are fixedly installed on the two ends of described main shield cover plate respectively, described line shielding cover board excessively is hollow box, described first entrance hole that the line shielding cover board is provided with box opening, is fastened on the end cap on the described box opening and is connected with described shielded enclosure, first wire hole that setting is connected with described shielded enclosure on the following connector crossed.
Preferably, also be provided with second entrance hole on the described mistake line shielding cover board, on the described following connector second wire hole be set also.
Preferably, described circuit board is at least two, and insulator spacer is set between the circuit board.
Preferably, described main shield cover plate comprises two barricades, and described two barricades fasten the back and form described shielded enclosure, are detachable connection between described two shieldings.
The beneficial effects of the utility model are:
1, cable-through hole adopts the composite type demountable structure, is convenient to instrument and crosses line and circuit board dismounting.
2, string-passing structure adopts the multilayer circuit board design, and shielding space utilance height satisfies instrument collection and processing module and installs and cross the line requirement under less instrument steric requirements.
3, design science compactness, the space is little, and line quantity is many excessively, and two kinds of transmission lines can be crossed line by two paths, make that line quantity is maximum excessively in limited shielding space.
Description of drawings
Fig. 1 is the structural representation of electromagnetic screen among the utility model embodiment;
Fig. 2 is that Fig. 1 is along the cutaway view of A-A direction;
Fig. 3 is that Fig. 1 is along the cutaway view of B-B direction;
Fig. 4 is that Fig. 2 is along the cutaway view of C-C direction.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, hereinafter will be elaborated to embodiment of the present utility model by reference to the accompanying drawings.Need to prove that under the situation of not conflicting, the feature among present embodiment and the embodiment is combination in any mutually.
Below with array side in the instrument data acquisition and the shielding of processing unit be example, the utility model is elaborated.
Among the embodiment of the present utility model, a kind of electromagnetic screen is disclosed, as Fig. 1-shown in Figure 4, comprise main shield cover plate 4, cross line shielding cover board 2 and following connector 3 and be arranged on main shield and cover the interior circuit board 5 of shielded enclosure that 4 plates surround 6, cross the two ends that line shielding cover board 4 and following connector 3 are fixedly installed on main shield cover plate 4 respectively, cross line shielding cover board 4 and be hollow box, cross line shielding cover board 4 and be provided with box opening 12, first entrance hole 9 that is fastened on the end cap (not shown) on the box opening 12 and is connected with shielded enclosure 6 arranges first wire hole 10 that is connected with shielded enclosure 6 on the following connector 3.
Line shielding cover board 2 excessively in the present embodiment is the box body of hollow, can deposit transmission line in the box body, the transmission line of external system can enter into line shielding cover board 2 by box opening 12, fasten end cap then, the whole electromagnetic shielding environment of crossing a sealing of line shielding cover board 2 formation, in use, data acquisition and the processing unit of array side in the instrument is placed on the circuit board 5 in the shielded enclosure 6 that main shield cover plate 4 surrounds, the transmission line that is connected with data acquisition and processing unit enters in the shielded enclosure 6 by first entrance hole 9, and by first wire hole, 10 connection external systems, cross line shielding cover board 2 and main shield cover plate 4 and can carry out electromagnetic shielding to transmission line and circuit board 5 effectively.
Further improvement as above-mentioned execution mode, cross and also be provided with second entrance hole 8 on the line shielding cover board 2, second wire hole 11 also is set on the following connector 3, for the transmission line that does not need to enter in the shielded enclosure 6, can pass through second entrance hole, 8 inlet wires, by 11 outlets of second wire hole, not take the space of shielded enclosure 6, under the condition of limited of the space of shielded enclosure 6, improved the line number excessively in the shielded enclosure 6 to greatest extent.
Further improvement as above-mentioned execution mode, circuit board 5 adopts the multilayer design, shown in Fig. 2 is double-layer circuit board, two circuit boards 5 are placed on the installation base in the shielded enclosure 6, support column 7 by insulation between right latter two circuit board 5 separates, the design of multilayer circuit board can effectively utilize effective shielding space.
The quantity of the circuit board 5 in the present embodiment can be according to the flexible in size setting of shielding space.
As the further improvement of above-mentioned execution mode, main shield cover plate 4 comprises two barricades, and two barricades fasten the back and form between 6, two shieldings of shielded enclosure and can be connected by bolt, perhaps adopt other detachable connected mode.
Though the disclosed execution mode of the utility model as above, the execution mode that described content just adopts for the ease of understanding the utility model is not in order to limit the utility model.Technical staff under any the utility model in the technical field; under the prerequisite that does not break away from the disclosed spirit and scope of the utility model; can do any modification and variation in the details of implementing that reaches in form; but scope of patent protection of the present utility model still must be as the criterion with the scope that appending claims was defined.
Claims (4)
1. electromagnetic screen, it is characterized in that: comprise the main shield cover plate, cross line shielding cover board and following connector and be arranged on the interior circuit board of shielded enclosure that described main shield cover plate surrounds, described line shielding cover board excessively and following connector are fixedly installed on the two ends of described main shield cover plate respectively, described line shielding cover board excessively is hollow box, described first entrance hole that the line shielding cover board is provided with box opening, is fastened on the end cap on the described box opening and is connected with described shielded enclosure, first wire hole that setting is connected with described shielded enclosure on the following connector crossed.
2. electromagnetic screen as claimed in claim 1 is characterized in that: also be provided with second entrance hole on the described mistake line shielding cover board, on the described following connector second wire hole be set also.
3. electromagnetic screen as claimed in claim 1 or 2, it is characterized in that: described circuit board is at least two, and insulator spacer is set between the circuit board.
4. electromagnetic screen as claimed in claim 1, it is characterized in that: described main shield cover plate comprises two barricades, described two barricades fasten the back and form described shielded enclosure, are detachable connection between described two shieldings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043901 CN203057782U (en) | 2013-01-25 | 2013-01-25 | Electromagnetic shielding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043901 CN203057782U (en) | 2013-01-25 | 2013-01-25 | Electromagnetic shielding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203057782U true CN203057782U (en) | 2013-07-10 |
Family
ID=48740691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320043901 Expired - Fee Related CN203057782U (en) | 2013-01-25 | 2013-01-25 | Electromagnetic shielding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203057782U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051354A (en) * | 2019-05-21 | 2019-07-26 | 佛山瑞加图医疗科技有限公司 | A kind of movable type nuclear magnetic resonance check shielding cabin |
| WO2020119378A1 (en) * | 2018-12-10 | 2020-06-18 | 中车永济电机有限公司 | Multifunctional power supply and driving apparatus having shield |
-
2013
- 2013-01-25 CN CN 201320043901 patent/CN203057782U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020119378A1 (en) * | 2018-12-10 | 2020-06-18 | 中车永济电机有限公司 | Multifunctional power supply and driving apparatus having shield |
| CN110051354A (en) * | 2019-05-21 | 2019-07-26 | 佛山瑞加图医疗科技有限公司 | A kind of movable type nuclear magnetic resonance check shielding cabin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20190125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |