CN101242734A - Shielding device for preventing electromagnetic interference - Google Patents
Shielding device for preventing electromagnetic interference Download PDFInfo
- Publication number
- CN101242734A CN101242734A CNA2007100267811A CN200710026781A CN101242734A CN 101242734 A CN101242734 A CN 101242734A CN A2007100267811 A CNA2007100267811 A CN A2007100267811A CN 200710026781 A CN200710026781 A CN 200710026781A CN 101242734 A CN101242734 A CN 101242734A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- electromagnetic interference
- face
- shielding device
- printing circuit
- 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.)
- Pending
Links
Images
Abstract
A electromagnetic interference shielding device, which protects female electronic connector on electronic printed circuit board from electromagnetic interference. The shielding device is a mask body covering female electronic connector, and provided with a turnover plate on the printed circuit board contacting the mask body, fixed to the printed circuit board by the turnover plate, and electrically connected to ground terminal of the printed circuit board, so that it is seamless between the shielding device and the printed electronic circuit board, and female electronic connector is effectively protected from electromagnetic interference.
Description
Technical field
The present invention relates to a kind of anti-electromagnetic interference (Electromagnetic Interference, EMI) masking device, particularly relate to a kind of in order to cover (Print Circuit Board on the electronic printing circuit board, PCB) female end electric power connector, protection female end electric power connector is not subjected to electromagnetic interference.
Background technology
Modern electronic equipment, as the high-frequency electronic assembly, its operation rate is more and more faster, Electro Magnetic Compatibility (Electromagnetic Compatibility, EMC) problem becomes more important, according to (the American National Standards Institute of ANSI, ANSI) standard of Zhi Dinging: IEEE ANSIStd.C63.12-1987, Electro Magnetic Compatibility be defined as " performance of a kind of device, equipment or system, it can make its under self environment operate as normal and simultaneously can be to this environment in any miscellaneous equipment produce intense electromagnetic and disturb." for radio transmission apparatus, adopt discontinuous frequency spectrum (discontinuous spectrum) can partly realize the requirement of Electro Magnetic Compatibility, but also showing Electro Magnetic Compatibility, always can not accomplish some relevant examples.For example have High-frequency Interference between mobile phone and the Medical Instruments and can't reach Electro Magnetic Compatibility, this interference is called electromagnetic interference.
Electromagnetic interference is relevant with current circuit and operating frequency in the electronic equipment, when for example the area of electric current in the high-frequency electronic assembly or current circuit is quite big, or operating frequency is when quite high, the capital causes this electronic building brick to produce electromagnetic energy between a frequency band, relative circuit then can be with this energy spread in environment on every side, in case this energy produces interference and influences its normal operation any miscellaneous equipment in this environment, is to be electromagnetic interference.
Electromagnetic interference can be divided into two kinds, conducted interference and radiated interference.Conducted interference is meant that seeing through conducting medium arrives another electronic equipment to the coupling of the signal on the electronic equipment (interference).Radiated interference is meant that interference source sees through the space another electronic equipment is arrived in its signal coupling (interference).Therefore the research to emc issue is exactly the research that concerns between interference source, coupling path, the sensing apparatus three.The circuit of electronic equipment own is the interference source of electromagnetic interference, get down to good circuit design and can improve the problem of electromagnetic interference, yet, generally still can utilize the electromagnetic shielding mode to do further electromagnetic interference shielding, electromagnetic shielding can be applicable to interference source and sensing apparatus, be the Electromagnetic Interference of dispersing with the source of avoiding interference to other electronic equipment, and the be interfered electromagnetic interference in source of protection sensing apparatus.
For coupling path; be meant airspace or conducting medium; can carry out electromagnetic interference shielding at radiation and conduction two aspects respectively; avoiding electromagnetic wave is to utilize the electromagnetic shielding mode via the radiation coupling; avoid electromagnetic wave to see through the conduction coupling and then can carry out safeguard procedures conducting medium; generally can coat a skin on the surface of conducting medium with the protection electromagnetic interference; it also is the electromagnetic shielding mode; transmission line is to be a kind of conducting medium; the plain conductor of formation transmission line and electric power connector all can be coated with protection with a crust or shell, and it is subjected to physical injury and electromagnetic interference; with regard to transmitting online electric power connector and the electric power connector on the electronic printing circuit board; because its joint face must be done the usefulness of connection and can't cover fully; so that the electromagnetic interference shielding of general electric power connector only can reach low electromagnetic protection performance; therefore, be necessary to carry out again further electromagnetic interference shielding.
The electromagnetic interference shielding of the electric power connector of known technology on electronic printing circuit board, be to cover electric power connector with shielding casing, for example: No. 00201059 patent of invention of TaiWan, China patent gazette bulletin on February 21st, 1993 " anti-electromagnetic radiation disturbs the metal shield assemblies ", TaiWan, China patent gazette bulletin on September 21st, 2005 M276360 patent of invention " electric connector shielding casing structure ", shield assemblies or shielding casing that this known technology is used are angle or the flanges that utilizes housing lateral plate lower edge, and slotted eye is fixed with welding manner again on the insertion circuit board.Only this known technology is when reality is used, still have a slit between the non-weld of the lateral plate lower edge of shielding casing and circuit board, cause electromagnetic wave to be coupled on the electric power connector with radiation by the slit of housing, therefore, the shielding casing structure of this known technology still can't effectively be protected for electromagnetic interference.
Summary of the invention
In view of above problem, the invention reside in provides a kind of masking device, is that the female end electric power connector that is used to protect on the electronic printing circuit board is not subjected to electromagnetic interference.
Therefore, for reaching above-mentioned purpose, the disclosed shielding device for preventing electromagnetic interference that is used for the female end electric power connector of the present invention, include: end face, 7 sides, wherein, the turnover face parallel with electronic printing circuit board extended in several sides, and stays an opening to dock with the male end electric power connector so that the female end electric power connector to be provided in a side wherein.
Use this and install employed technological means, be that masking device is covered the female end electric power connector, masking device is to utilize turnover face to be fixed on the electronic printing circuit board, and reach electric connection with the electronic printing circuit board earth terminal, be not have the dew slit between turnover face and the electronic printing circuit board, can effectively protect the female end electric power connector and not be subjected to electromagnetic interference in the seam mode.
Description of drawings
Figure 1A is the stereogram for the preferable masking device of the present invention;
Figure 1B is another angle stereogram for the preferable masking device of the present invention;
Fig. 1 C turns over schematic diagram in the side lower edge for the preferable masking device of the present invention;
Fig. 2 A is the stereogram for another preferable masking device of the present invention;
Fig. 2 B is another angle stereogram for another preferable masking device of the present invention;
Fig. 2 C turns over schematic diagram in the side lower edge for another preferable masking device 400 of the present invention.
Embodiment
Please refer to " Figure 1A " and " Figure 1B ", " Figure 1A " is the stereogram for the preferable masking device 100 of the present invention, " Figure 1B " is another angle stereogram for the preferable masking device 100 of the present invention, according to this preferred embodiment, electric power connector is that (Digital Visual Interface DVI) is example, wherein with digital image interface, masking device 100 all is fixed on the electronic printing circuit board 300 with female end digital image interface 200, and masking device 100 covers female end digital image interface 200.
Female end digital image interface 200 has one and connects face 201, be in order to butt joint male end digital image interface 210, has an opening with respect to the 4th side 105 that connects face 201, this opening makes that connecing face 201 is provided butt joint, and the 4th side 105 trims the side 310 in electronic printing circuit board 300, and its lower edge can cover the side 310 of electronic printing circuit board 300.
Please refer to " Fig. 1 C ", be to turn over schematic diagram in the side lower edge for the preferable masking device 100 of the present invention, the lower edge of first side 102, second side 103 and the 3rd side 104 extends first turnover face 115, second turnover face 116 and three a turnover face 117 parallel with electronic printing circuit board 300 respectively in device, and its complementary characteristic of masking device 100 as previously mentioned, gives unnecessary details in this inconvenience.
The present invention can have other variation execution mode in addition, please refer to " Fig. 2 A " and " Fig. 2 B ", " Fig. 2 A " is the stereogram for another preferable masking device 400 of the present invention, " Fig. 2 B " is another preferable another angle stereogram of disturbing masking device 400 of the present invention, according to this another preferable this embodiment, masking device 400 also has end face 401, first side 402, second side 403, the 3rd side 404 and the 4th side 405.
Female end digital image interface 500 has one and connects face 501, be in order to butt joint male end digital image interface 510, has an opening with respect to the 4th side 405 that connects face 501, this opening makes that connecing face 501 is provided butt joint, and the 4th side 405 is positioned within the electronic printing circuit board 600, therefore, the lower edge of the 4th side 405 extends four a turnover face 415 parallel with electronic printing circuit board 600 outside device, first side 402, the lower edge of second side 403 and the 3rd side 404 also extends first a turnover face 412 parallel with electronic printing circuit board 600 respectively outside device, the second turnover face 413 and the 3rd turnover face 414, masking device 400 these four turnover faces of welding are on electronic printing circuit board 600, masking device 400 is fixed on the electronic printing circuit board 600, and with the electric connection of electronic printing circuit board 600, reach the ground connection effect.
Please refer to " Fig. 2 C ", be to turn over schematic diagram in the side lower edge for another preferable masking device 400 of the present invention, the lower edge of first side 402, second side 403 and the 3rd side 404 extends first turnover face 416, second turnover face 417 and three a turnover face 418 parallel with electronic printing circuit board 300 respectively in device, and its complementary characteristic of masking device 400 as previously mentioned, gives unnecessary details in this inconvenience.
Claims (6)
1. shielding device for preventing electromagnetic interference, this masking device is to coat a female end electric power connector, and this female end electric power connector is to be fixed on the electronic printing circuit board, and the female end electric power connector has one and connects face, it is characterized in that this shielding device for preventing electromagnetic interference comprises:
One end face;
Several sides be to extend and contact this electronic printing circuit board from this end face, and this one side that connects face that regards in these several sides are provided with an opening;
At least one turnover face, it is to be extended by one of them parallel this electronic printing circuit board of these several sides, this turnover face is fixed on this electronic printing circuit board, and electrically connects with this electronic printing circuit board earth terminal.
2. shielding device for preventing electromagnetic interference according to claim 1 is characterized in that, this female end electric power connector is to be a female end digital image interface.
3. shielding device for preventing electromagnetic interference according to claim 1 is characterized in that, this end face and this several sides are with this masking device of integrally formed formation.
4. shielding device for preventing electromagnetic interference according to claim 1 is characterized in that this turnover face is fixed on this electronic printing circuit board with welding manner.
5. shielding device for preventing electromagnetic interference according to claim 4 is characterized in that, the turnover direction of this turnover face is to turn down in this masking device.
6. shielding device for preventing electromagnetic interference according to claim 4 is characterized in that, the turnover direction of this turnover face is to turn down outside this masking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100267811A CN101242734A (en) | 2007-02-08 | 2007-02-08 | Shielding device for preventing electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100267811A CN101242734A (en) | 2007-02-08 | 2007-02-08 | Shielding device for preventing electromagnetic interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101242734A true CN101242734A (en) | 2008-08-13 |
Family
ID=39933843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100267811A Pending CN101242734A (en) | 2007-02-08 | 2007-02-08 | Shielding device for preventing electromagnetic interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101242734A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448341A (en) * | 2018-03-08 | 2018-08-24 | 东莞市川景电子科技有限公司 | A kind of screen method of connector female seat |
| CN108718011A (en) * | 2018-05-29 | 2018-10-30 | 苏州佳世达电通有限公司 | Electronic device |
| CN108879239A (en) * | 2018-06-27 | 2018-11-23 | 努比亚技术有限公司 | The shielding construction of mobile terminal and its connector |
| WO2022134724A1 (en) * | 2020-12-26 | 2022-06-30 | 苏州浪潮智能科技有限公司 | Network port provided on pcb and server |
-
2007
- 2007-02-08 CN CNA2007100267811A patent/CN101242734A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448341A (en) * | 2018-03-08 | 2018-08-24 | 东莞市川景电子科技有限公司 | A kind of screen method of connector female seat |
| CN108718011A (en) * | 2018-05-29 | 2018-10-30 | 苏州佳世达电通有限公司 | Electronic device |
| CN108879239A (en) * | 2018-06-27 | 2018-11-23 | 努比亚技术有限公司 | The shielding construction of mobile terminal and its connector |
| WO2022134724A1 (en) * | 2020-12-26 | 2022-06-30 | 苏州浪潮智能科技有限公司 | Network port provided on pcb and server |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10790621B2 (en) | Portable electronic device | |
| TW583794B (en) | Providing shields to reduce electromagnetic interference from connectors | |
| US11171454B2 (en) | USB connector with double shield layers | |
| CN101242734A (en) | Shielding device for preventing electromagnetic interference | |
| US20080076356A1 (en) | Wireless communication noise suppression system | |
| US20120007788A1 (en) | Antenna module | |
| CN101944649A (en) | Antenna module | |
| CN105305068A (en) | Combined antenna and electronic equipment | |
| US7147491B1 (en) | Non-continuous counterpoise shield | |
| CN102573435B (en) | Printed circuit board grounding structure of communication equipment | |
| US20170194695A1 (en) | Antenna device and mobile terminal | |
| CN209981644U (en) | Capsule endoscope system and trunk line thereof | |
| JP2010114110A (en) | Electronic equipment | |
| CN215344831U (en) | Electronic display device | |
| US11329414B2 (en) | Conductive receptacle collar for desense mitigation | |
| CN103868542A (en) | Measurement device with sealed interface | |
| US10856427B2 (en) | Electronic apparatus and housing unit that are equipped with housing member | |
| WO2018125424A1 (en) | Shield for connector | |
| CN107742781A (en) | Antenna structure and the mobile terminal with the antenna structure | |
| CN2596622Y (en) | Electronic adaptor | |
| CN207664363U (en) | A kind of micro- rectangular receptacle of electromagnetism interference high density | |
| CN109479074B (en) | USB connector with double shielding layers | |
| CN207460153U (en) | A kind of wearable device | |
| RU2170481C1 (en) | Sealed contactless connector | |
| CN207286035U (en) | Fujinon electronic video endoscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080813 |