EP2047731A1 - Boitier de composants electroniques et procede de montage du boitier - Google Patents
Boitier de composants electroniques et procede de montage du boitierInfo
- Publication number
- EP2047731A1 EP2047731A1 EP07804702A EP07804702A EP2047731A1 EP 2047731 A1 EP2047731 A1 EP 2047731A1 EP 07804702 A EP07804702 A EP 07804702A EP 07804702 A EP07804702 A EP 07804702A EP 2047731 A1 EP2047731 A1 EP 2047731A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- cover
- card
- printed circuit
- board
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012216 screening Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005476 soldering Methods 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]
- H05K9/0037—Housings with compartments containing a PCB, e.g. partitioning walls
Definitions
- the invention relates to enclosures or electronic boxes, in which components are mounted on a printed circuit board.
- some of the housing components may be sensitive to electromagnetic radiation or interference and must be protected.
- the protection can be provided by a shielding cap, called EMC shielding (electromagnetic compatibility).
- EMC shielding electromagnettic compatibility
- TPMS motor vehicle tires
- RF radio frequency
- the shielding cap is a metal cover electrically connected to the circuit board ground on the board.
- Such housings with an EMC shield metal cover are already known, for example that of document JP 2000-156 590, in which the cover is a conventional component that can be welded to the wave. But as the welding of the components to be installed under the hood must be verified, it requires soldering the hood in a subsequent and therefore additional step.
- the invention of the present application aims first to solve this problem.
- the invention firstly relates to a method of mounting an electronic component package comprising a housing, in the housing, a printed circuit board, components mounted on the card, some of which are to be protected and covered with an EMC shielding cap electrically connected to the printed circuit on the card, characterized in that the shielding is firstly placed in the housing before the card is inserted and then the housing is closed by a cover for fixing the cover and the map.
- the cover covers the components to be protected after their welding on the card during the installation of the card in the housing, which makes it possible to check the welding of the components to be protected so as to is normal.
- the shielding cover is electrically connected to the circuit board of the dry card by mechanical pressure.
- the cover is no longer soldered to the printed circuit and this provides a very significant advantage.
- the hood mounted according to the method of the invention has excellent resistance to vibrations and other mechanical stresses.
- the risk of introduction under the hood of dust and other impurities is also very small.
- the cover and the printed circuit of the card are electrically connected by sliding contact.
- the invention also relates to an electronic component housing comprising a housing, in the housing, a printed circuit board, components mounted on the board, some of which are to be protected and covered with an EMC shielding cover electrically connected to the printed circuit board.
- the card and a cover for closing the housing characterized in that the cover is electrically connected to the circuit board of the card by sliding contact elements.
- the shielding cap is provided with elastic contact strips arranged to cooperate with contact pads mounted on the printed circuit of the card.
- the contact pads are surface mounted components on the board and soldered with the other CMS components of the board.
- the closure cover of the housing is a cover for fixing the shielding cover and the printed circuit board.
- Figure 1 shows a top view of the bottom of the housing of the invention, after installation of the shielding cap
- Figure 2 shows a sectional view of the bottom of the housing along the line II-II of Figure 1 with the printed circuit board being positioned;
- 3 shows a sectional view of the bottom of the housing along the line III-III of Figure 1, after installation of the card;
- FIG. 4 represents an exploded perspective view of the housing, with the shielding cap, and the printed circuit board, and
- Figure 5 is a perspective view of the bottom of the housing, the shielding cap and a laying template illustrating the installation of the cover.
- a metal shielding cover CEM 12 On a determined area 11 of the card 7, are grouped components protected by a metal shielding cover CEM 12.
- the shielding cap 12 is also plugged slightly forcibly on other pads 13, 14 integral with the bottom 2, by orifices 15, 16 (FIG. 4). It is essentially guiding pads and holding the cover 12 before the installation of the card 7. These holes are here drilled near two diagonal corners of the cover but not symmetrically to ensure a correct and correct positioning of the hood on the bottom of the case.
- a rib 17 molded from the bottom of the housing near the longitudinal wall 3 of the housing near a 13 of the two fixing studs of the cover allows to perfect the keying.
- the shielding cover 12 extends between the bottom 2 of the housing and the printed circuit board 7.
- the housing further comprises a closing cap (not shown in the figures) which assures the assembly of the assembly and the fixing of the shielding cap 12 and the printed circuit board 7.
- the height of the side walls 21 (FIG. 5) of the shielding cap 12 is such that any risk of contact between the components of the zone 11 of the card 7 and the cover is eliminated.
- the shielding cap 12 is electrically connected to the ground of the circuit which is printed on the card 7. More precisely, the cover 12 is provided with elastic contact strips 18, here four in number, in sliding contact on contact pads. 19 ( Figure 1) mounted on the printed circuit of the card 7, as conventional components welded re fusion.
- the contact strips 18 protrude from the lateral edges of the cover, like its walls 21, and extend slightly inclined with respect to these walls.
- the free end 22 of the slats 18 is bent in the form of a foot to facilitate the sliding contact against the plates 19.
- the contact strips 18 are slightly deformed to ensure electrical contact. The more the slats are stressed, the more they are inclined and deviate from the planes of the hood walls.
- the cover 12 must bear on the card 7 only by the slats 18 and the contact pads 19.
- the card 7 is placed in the housing.
- the contact strips 18 of the cover 12 resting against the pads 19 of the bottom of the housing are spaced apart from their rest position but the only bearing areas of the cover are defined between these strips and plates. If the assembly is correct, it has not undergone any deformation.
- the electrical contacts between the cover 12 and the card 7 are then provided dry, by mechanical pressure.
- the housing is then closed again by means of a lid which finishes fixing the cover 12 and the card 7 in the housing 1.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Casings For Electric Apparatus (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0653283A FR2904752B1 (fr) | 2006-08-03 | 2006-08-03 | Boitier de composants electroniques et procede de montage du boitier |
| PCT/IB2007/002239 WO2008015561A1 (fr) | 2006-08-03 | 2007-08-03 | Boitier de composants electroniques et procede de montage du boitier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2047731A1 true EP2047731A1 (fr) | 2009-04-15 |
Family
ID=37943870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07804702A Withdrawn EP2047731A1 (fr) | 2006-08-03 | 2007-08-03 | Boitier de composants electroniques et procede de montage du boitier |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2047731A1 (fr) |
| FR (1) | FR2904752B1 (fr) |
| WO (1) | WO2008015561A1 (fr) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5717577A (en) * | 1996-10-30 | 1998-02-10 | Ericsson, Inc. | Gasketed shield can for shielding emissions of electromagnetic energy |
| AU2001268480A1 (en) * | 2000-06-20 | 2002-01-02 | Laird Technologies, Inc. | Shielding cover with integral resilient ribs |
| JP4299152B2 (ja) * | 2004-01-08 | 2009-07-22 | 日本碍子株式会社 | 電磁波シールドケースおよびその製造方法 |
-
2006
- 2006-08-03 FR FR0653283A patent/FR2904752B1/fr not_active Expired - Fee Related
-
2007
- 2007-08-03 EP EP07804702A patent/EP2047731A1/fr not_active Withdrawn
- 2007-08-03 WO PCT/IB2007/002239 patent/WO2008015561A1/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2008015561A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2904752B1 (fr) | 2014-07-11 |
| WO2008015561A1 (fr) | 2008-02-07 |
| FR2904752A1 (fr) | 2008-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20090202 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
| 17Q | First examination report despatched |
Effective date: 20090604 |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: JOHNSON CONTROLS TECHNOLOGY COMPANY |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20180515 |