EP1277379A1 - Chambre blindee - Google Patents

Chambre blindee

Info

Publication number
EP1277379A1
EP1277379A1 EP01929279A EP01929279A EP1277379A1 EP 1277379 A1 EP1277379 A1 EP 1277379A1 EP 01929279 A EP01929279 A EP 01929279A EP 01929279 A EP01929279 A EP 01929279A EP 1277379 A1 EP1277379 A1 EP 1277379A1
Authority
EP
European Patent Office
Prior art keywords
screen
circuit board
printed circuit
shielding
frame
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.)
Withdrawn
Application number
EP01929279A
Other languages
German (de)
English (en)
Inventor
Raimund Stetter-Alle
Peter Holl
Helmut Riesenegger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1277379A1 publication Critical patent/EP1277379A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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

Definitions

  • CD N CD P>> n ⁇ O 0 0 CD ⁇ ⁇ ⁇ tr ⁇ 3 ⁇ ⁇ q ⁇ rt rt F- N
  • CD CD Fr D 0 rt rt H 0 CD 0 "rt H er o t ⁇ 0 ⁇ 0 iQ ty PJ ⁇ t- 1 ⁇
  • the shielding chamber has a plastic shielding frame which runs around the circuit to be shielded and which is fastened to the printed circuit board, and a shielding cover fastened to the shielding frame.
  • An RF-tight chamber is formed by the shield frame and the attached shield cover, which shields the layout area equipped with components on the covered printed circuit board.
  • the shielding chamber is in two parts in the present case, the plastic shielding frame providing the side shielding and the shielding cover covering the circuit upwards.
  • the screen frame can be made of a metallized thermoplastic, for example. But it can also be a conductive plastic.
  • the use of a plastic screen frame has the advantage that the linear expansion coefficient is in the order of magnitude of the printed circuit board and therefore less distortion of the printed circuit board can be expected after soldering.
  • the frame - like the conventional metal shield chambers - can be soldered onto a shield trace, usually a gold trace, on the circuit board.
  • the soldering can by various methods such as beispiels- with reflow soldering or similar methods, ⁇ be performed. Due to the two-part shape, it is initially possible to attach only the screen frame to the circuit board, the screen cover not yet being attached. An automatic optical inspection of the circuit is therefore also possible after the soldering process.
  • the screen frame preferably has a separating web which divides the screen chamber into subchambers.
  • This separator is part of the screen frame and is preferably made in one piece with the outer frame. In this way, different layout areas can be shielded separately from one screen frame.
  • the screen frame for producing any number of subchambers can have any number of such dividers in any arrangement and with any course.
  • the construction with such dividers to subdivide a shielding chamber into several subchambers also has the advantage that only one shielding trace is required on the printed circuit board to delimit two areas shielded separately from one another, onto which the separating web can be soldered.
  • two parallel screen tracks are required in the conventional method with a plurality of chambers arranged side by side.
  • the shielding according to the invention thus leads to better use of space on the circuit board.
  • the screen cover is detachably attached to the screen frame. This has the advantage that the shield chamber can be opened at any time for repair or inspection without having to remove the entire shield chamber from the circuit board.
  • the releasable attachment is preferably realized in that the screen cover and the screen frame have interacting clamping and / or latching elements.
  • the shield cover itself is made of metal, for example, preferably as a stamped and bent part in one piece with the necessary clamping and / or locking elements made of sheet metal.
  • clamping and / or latching elements can be, for example, slots, pockets or indentations arranged in the frame, into which the shield cover placed on the frame engages or claws.
  • the metallization of the screen frame or the use of a conductive plastic for the screen frame automatically ensures good electrical contact between the screen cover and frame.
  • the screen frame has one or possibly several openings in the edge facing the printed circuit board.
  • this can also involve a plurality of regular openings, each arranged at a fixed distance from one another.
  • the framework is centering, ie partially exempted from the base. Accordingly, an intermittent gold trace is then applied to the printed circuit board and the screen frame is soldered onto the printed circuit board only at these points.
  • This measure contains advantages in terms of layout, since various lines can be routed out of the shielding chamber or from shielding chamber to shielding chamber on the circuit board surface or on the upper layer. Accordingly, of course, not only the outer frame of the screen frame, but also the dividers are provided with recesses.
  • FIG. 1 shows a perspective view of a printed circuit board with a screen frame arranged thereon with two partial chambers and with a common screen cover in the non-locked position;
  • FIG. 2 shows a perspective view according to FIG. 1, but with the shield cover closed;
  • FIG. 3 shows a perspective enlarged view of a corner section of a screen chamber with a screen frame with periodically arranged recesses in the base area and non-latched screen cover arranged above it;
  • FIG. 4 shows a perspective view according to FIG. 3, but with the shield cover closed.
  • a shielding frame 3 which is appropriately adapted to the circuit layout is first produced from plastic, for example from a thermoplastic.
  • plastic for example from a thermoplastic.
  • suitable recesses 11 or indentations in the form of slots or pockets are made in the upper edge 9 of the screen frame 3 at periodic intervals.
  • production can be carried out inexpensively in an injection molding process, the recesses 11 being able to be molded in at the same time.
  • a screen cover 4 is produced from a sheet metal using the stamping and bending process and has a plurality of tongues 8 bent over on the outer edges 7 in the direction of the .. screen frame 3. These tongues 8 are arranged so that they engage exactly in the recesses 11 in the upper edge 9 of the screen frame 3.
  • the recesses 11 in the upper edge 9 of the screen frame 3 create a counter surface to the tongues 8 of the screen cover 4, with the aid of which the screen cover 4 can be securely snapped or snapped into the screen frame 3. Since the screen frame 3 is metallized overall after production, contacting between the screen cover 4 and the screen frame 3 is also automatically ensured.
  • the shield frame 3 and shield cover 4 shown can each be adapted as desired to the layout of the circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

L'invention concerne une chambre blindée permettant de protéger un circuit placé sur une plaquette. La chambre blindée est ouverte vers la plaquette et, à l'état monté, recouvre le circuit placé sur la plaquette. La chambre blindée présente un cadre blindé en plastique qui, à l'état monté, entoure le circuit à protéger sur la plaquette et un couvercle blindé fixé au cadre blindé.
EP01929279A 2000-04-25 2001-03-29 Chambre blindee Withdrawn EP1277379A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10020268 2000-04-25
DE10020268 2000-04-25
PCT/DE2001/001218 WO2001082669A1 (fr) 2000-04-25 2001-03-29 Chambre blindee

Publications (1)

Publication Number Publication Date
EP1277379A1 true EP1277379A1 (fr) 2003-01-22

Family

ID=7639898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01929279A Withdrawn EP1277379A1 (fr) 2000-04-25 2001-03-29 Chambre blindee

Country Status (4)

Country Link
EP (1) EP1277379A1 (fr)
KR (1) KR20020089526A (fr)
CN (1) CN1436440A (fr)
WO (1) WO2001082669A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10340866A1 (de) * 2003-09-04 2005-03-31 Siemens Ag Verfahren zum Befestigen einer Elementgruppe an einer Trägerschicht
KR101608796B1 (ko) 2013-06-11 2016-04-04 삼성전자주식회사 쉴드 캔 조립체 및 그것을 갖는 전자 장치
KR20150108262A (ko) * 2014-03-17 2015-09-25 삼성전자주식회사 쉴드 캔, 전자 장치 및 이의 제조 방법
CN105555110B (zh) * 2015-12-09 2018-07-24 上海斐讯数据通信技术有限公司 一种屏蔽罩结构
CN108650869B (zh) * 2018-02-24 2023-08-11 深圳市信维通信股份有限公司 一种复合型屏蔽罩
US11158585B1 (en) * 2018-03-27 2021-10-26 Intel IP Corporation Warpage compensating RF shield frame
CN211019721U (zh) * 2019-07-26 2020-07-14 深圳驭龙电焰科技有限公司 Pcba组件及电焰灶
CN113498247A (zh) * 2020-03-20 2021-10-12 华为技术有限公司 电路板组件和电子设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9214394U1 (de) * 1992-10-23 1992-12-17 Siemens AG, 8000 München Befestigung einer Abschirmung mit einer Leiterplatte
GB2297868B (en) * 1995-02-07 1999-04-28 Nokia Mobile Phones Ltd A shielding device
US5566055A (en) * 1995-03-03 1996-10-15 Parker-Hannifin Corporation Shieled enclosure for electronics
SE511926C2 (sv) * 1997-04-16 1999-12-20 Ericsson Telefon Ab L M Skärmningshölje jämte förfarande för framställning och användning av ett skärmningshölje samt mobiltelefon med skärmningshölje
US6137692A (en) * 1997-05-29 2000-10-24 U.S. Philips Corporation Electromagnetic shielding screen and circuit support having such a screen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0182669A1 *

Also Published As

Publication number Publication date
KR20020089526A (ko) 2002-11-29
WO2001082669A1 (fr) 2001-11-01
CN1436440A (zh) 2003-08-13

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: STETTER-ALLE, RAIMUND

Inventor name: RIESENEGGER, HELMUT

Inventor name: HOLL, PETER

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18D Application deemed to be withdrawn

Effective date: 20061031