NO873163L - CARD CARD FOR TELETECHNICS. - Google Patents
CARD CARD FOR TELETECHNICS.Info
- Publication number
- NO873163L NO873163L NO873163A NO873163A NO873163L NO 873163 L NO873163 L NO 873163L NO 873163 A NO873163 A NO 873163A NO 873163 A NO873163 A NO 873163A NO 873163 L NO873163 L NO 873163L
- Authority
- NO
- Norway
- Prior art keywords
- circuit board
- components
- pins
- card
- shielding
- Prior art date
Links
- 238000005476 soldering Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
-
- 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
- H05K9/002—Casings with localised screening
- H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
- H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
- H05K9/0032—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields having multiple parts, e.g. frames mating with lids
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Color Television Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Description
Oppfinnelsen angår et kretskort for teleteknikk med pluggbar skjerming for de derpå forekommende komponenter, idet denne består av en plateramme som omgir disse komponenter og er forsynt med et pluggdeksel, og som er loddet til kretskortet ved hjelp av loddestifter i jordingsstrømløpet. The invention relates to a circuit board for telecommunications with pluggable shielding for the components located thereon, as this consists of a plate frame which surrounds these components and is provided with a plug cover, and which is soldered to the circuit board by means of soldering pins in the earthing current path.
Ved slike kretskort har man hyppig det krav at også den With such circuit boards, there is often a requirement that the
andre side av kretskortet med strømløpene og eventuelt ytterligere komponenter skal forsynes med en skjerming. the other side of the circuit board with the current paths and possibly additional components must be provided with a shield.
Hensikten med oppfinnelsen er for dette formål å angi en enkel, praktisk utførbar løsning. For this purpose, the purpose of the invention is to provide a simple, practically feasible solution.
Ved en kretskortanordning av den innledningsvis nevnte art oppnås dette i henhold til oppfinnelsen ved at loddestiftene på den andre side av kretskortet er utført slik at de i et større antall rager noe ut og over kretskortplanet samt over de derpå forekommende komponenter, som såkalte SMD-komponenter, og at det på disse stifter er tilplugget en ytterligere skjermingsplate. In the case of a circuit board device of the type mentioned at the outset, this is achieved according to the invention by the soldering pins on the other side of the circuit board being designed so that a larger number of them protrude somewhat and above the circuit board plane as well as over the components occurring thereon, such as so-called SMD components , and that a further shielding plate is plugged onto these pins.
I det følgende skal oppfinnelsen samt dens fordeler forklares nærmere i tilknytning til det på tegningen fremstilte ut-førelseseksempel. Fig. 1 viser derved en kretskortanordning med enkeltskjerming av komponentene. In what follows, the invention and its advantages will be explained in more detail in connection with the embodiment shown in the drawing. Fig. 1 thereby shows a circuit board arrangement with individual shielding of the components.
Fig. 2 viser undersiden av kretskortet. Fig. 2 shows the underside of the circuit board.
Spesielt ved større kretskort for teleteknikk og radioteknikk er enkeltskjerminger for komponenter i henhold til fig. 1 anordnet på en side av den såkalte komponentside 7. Derved er normalt et skjermingshette utført som en ramme og forsynt med loddestifter, påloddet kretskortet. For å lette adgangen til komponentene er det anordnet pluggbare deksler eller hetter 6 som med en falset kant 4 plugges på disse rammer 5. Er en skjerming, som det ved slike montasjer hyppig kreves, også nødvendig på undersiden 8, normalt den såkalte strøm-løpside, så er der likeledes skjermingsplater nødvendig. Spesielt er dette tilfelle når det som for tiden hyppig er nødvendig at det også på denne side, hvor vanligvis strøm-ningslodningen foretas, f.eks. skal forekomme såkalte SMD-komponenter (surface-mounted-devices). Especially in the case of larger circuit boards for telecommunications and radio engineering, individual shields for components according to fig. 1 arranged on one side of the so-called component side 7. Thereby, a shielding cap is normally designed as a frame and provided with soldering pins, soldered onto the circuit board. In order to facilitate access to the components, pluggable covers or hoods 6 are arranged which, with a folded edge 4, are plugged onto these frames 5. Is shielding, which is frequently required in such assemblies, also necessary on the underside 8, normally the so-called flow side , then shielding plates are also required. In particular, this is the case when it is currently frequently necessary that also on this side, where current soldering is usually carried out, e.g. there must be so-called SMD components (surface-mounted-devices).
For å feste denne skjerming er loddestiftene 2 på skjermrammen 5 på montasjeoversiden i stort antall og i større høyde enn det som normalt er nødvendig, stukket gjennom kretskortet og loddet til jordingsstrømløpene. Ved det store antall og høyden på stiftene er det mulig på disse stiftrekker i tillegg å plugge skjermingsplatedeksler 3, som normalt likeledes er forsynt med falsede kanter 4 for bedre fiksering og sentrer-ing. Det er derved viktig at stifthøyden og høyden til disse falsede kanter 4 er dimensjonert slik at de mellom jordings-stiftene gjennomgående strømførende strømløp, som ikke er isolert, og tilkoblingene for SMD-komponentene ikke berøres. Det er på denne måte uten ekstra kostnad mulig å beskytte strømløpene på viringssiden 8 av komponentmontasjen samt de derpå forekommende komponeter mot inn- og utstråling av elektriske felt ved lett avtagbare skjermingsdeksler 3. In order to attach this shielding, the solder pins 2 on the shield frame 5 on the mounting top side in large numbers and at a greater height than is normally necessary, are inserted through the circuit board and soldered to the earthing currents. Due to the large number and height of the pins, it is also possible to plug shielding plate covers 3, which are normally also provided with folded edges 4 for better fixation and centering, on these pin pullers. It is therefore important that the pin height and the height of these folded edges 4 are dimensioned so that the current-carrying currents running between the grounding pins, which are not insulated, and the connections for the SMD components are not touched. In this way, it is possible, at no extra cost, to protect the current flows on the wiring side 8 of the component assembly as well as the components located there against the ingress and emission of electric fields by means of easily removable shielding covers 3.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8620678U DE8620678U1 (en) | 1986-08-01 | 1986-08-01 | |
DE19868628884 DE8628884U1 (en) | 1986-10-29 | 1986-10-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
NO873163D0 NO873163D0 (en) | 1987-07-28 |
NO873163L true NO873163L (en) | 1988-02-02 |
Family
ID=25950997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO873163A NO873163L (en) | 1986-08-01 | 1987-07-28 | CARD CARD FOR TELETECHNICS. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0262332A3 (en) |
DK (1) | DK385587A (en) |
FI (1) | FI873337A (en) |
NO (1) | NO873163L (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4000286A1 (en) * | 1990-01-08 | 1991-07-11 | Bosch Gmbh Robert | SHIELDING CONTAINER FOR A AREA OF A PCB |
JPH03212006A (en) * | 1990-01-17 | 1991-09-17 | Sony Corp | Package for high frequency circuit |
JP2516314Y2 (en) * | 1990-10-15 | 1996-11-06 | 日本シイエムケイ株式会社 | Electromagnetic wave shield printed wiring board |
DE4115153A1 (en) * | 1991-05-08 | 1992-11-12 | Lo Kun Nan | ASSEMBLED PCB WITH AN ALUMINUM SHIELDING HOUSING |
FI109960B (en) * | 1991-09-19 | 2002-10-31 | Nokia Corp | Electronic device |
DE4236593A1 (en) * | 1992-10-29 | 1994-05-05 | Siemens Ag | Backplane circuit board for a module frame |
TW486238U (en) * | 1996-08-18 | 2002-05-01 | Helmut Kahl | Shielding cap |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1927256C3 (en) * | 1969-05-29 | 1981-10-08 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Television receiver with a circuit arrangement for keyed gain control |
-
1987
- 1987-07-23 DK DK385587A patent/DK385587A/en not_active Application Discontinuation
- 1987-07-28 NO NO873163A patent/NO873163L/en unknown
- 1987-07-30 EP EP87111074A patent/EP0262332A3/en not_active Withdrawn
- 1987-07-31 FI FI873337A patent/FI873337A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FI873337A (en) | 1988-02-02 |
NO873163D0 (en) | 1987-07-28 |
DK385587A (en) | 1988-02-02 |
EP0262332A2 (en) | 1988-04-06 |
DK385587D0 (en) | 1987-07-23 |
FI873337A0 (en) | 1987-07-31 |
EP0262332A3 (en) | 1989-09-20 |
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