GB2258953A - Circuit board and shielding housing - Google Patents
Circuit board and shielding housing Download PDFInfo
- Publication number
- GB2258953A GB2258953A GB9118060A GB9118060A GB2258953A GB 2258953 A GB2258953 A GB 2258953A GB 9118060 A GB9118060 A GB 9118060A GB 9118060 A GB9118060 A GB 9118060A GB 2258953 A GB2258953 A GB 2258953A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit board
- housing
- bores
- elongated
- holes
- 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- Withdrawn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
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
- H05K9/0026—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields integrally formed from metal sheet
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Casings For Electric Apparatus (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Description
2 2-)8? 31 --I-- CIRCUIT BOARD AND SHIE'LDING HOUSItiC The invention
relates to a housing and a circuit board, more particularly to the construction method of- a housing on a circuit board for example for shielding a transformer and associated parts, also mounted on the circuit board.
As it is well known a circuit board of a computej comprises a plurality of electronic subassemblies, a transformer and other associated parts. The transformer is generally isolated from all the electronic subassemblies by an aluminum housing. The purpose of the aluminum housing is to prevent heat dissipation and magnetic flux of the transformer from affecting the functioning of the electronic subassemblies. It has been found that a lot of work has to be done to mount said aluminum housing on said circuit board because the housing is first mounted on the circuit board and later secured by means of screws. Occasionally, when it its desired to disassemble the housing from the circuit board, each of the screws must be loosened and only then can the housing be removed from the circuit board. This is very inconvenient.
Therefore, the main object of the present invention is to provide a i __1housing having means to mount it on a circuil board of for example a computer easily and more conveniently than prior models.
0- According to one aspect of the invention there is provided a circuit board having a housing mounted thereon, said housing having a plurality of bores, said circuit board having plurality of holes aligned with said bores, and there being a plurality of pins extending through said aligned holes and bores wherein said housing is secured to the circuit board so as to be held in place during normal use and the application of a predetermined force causes the housing to be separated from the circuit board.
According to a second aspect of the invention, there is provided a circuit board having-a shielding housing mounted thereon, characterised by:
said housing having at least one side wall generally perpendicularly mounted on said circuit board, the or each said side wall having at least one elongated projection extending substantially perpendicular to said circuit board, the or each said elongated projection having a through bore formed along its length; said circuit board having a plurality of mounting holes therein; and a plurality of pins each of which has one end fixed to said circuit board and the other end passing through one of said mounting holes of said circuit board and inserted into one of said through bores of said elongated projections.
-3 In one embodiment, an aluminum housing mounted on a circuit board of a computer for shielding a transformer includes an top open end, an bottom open end and four side walls interconnecting the top open end and the bottom open end. Each wall has at least one elongated projection extending from the top open end towards the bottom open end, perpendicular to the circuit board. Each of the elongated projections has a through bored along its length. The circuit board a plurality of mounting holes therein. Each of a plurality of pins, has a first end fixed in the circuit board and a second end passing through the mounting hole of the circuit board and inserted into the through bore of one of the elongated projections.
other features and advantages of the present invention will become more apparent in the following detailed description, including drawings, all of which show an exemplifying embodiment of the present invention, and of which:
Figure 1 is a schematic, perspective view of an aluminium housing.
Figure 2 is a perspective view of thealuminum housing of Figure 11 mounted on a circuit board- Figure 3 illustrates how the housingi!is mounted on a circuit board.
Referring to Figure 1, an aluminum housing 20 1-- - i t. is shown to comprise a top open end, a bottom open end and four side walls interconnecting the top open end to the bottom open end. Each of the four side walls has a plurality of elongated projections 22 extending from the top open end towards the bottom open end. Each of the elongated projections 22 has a through bore 222 along its length.
The circuit board 101 1,has a plurality of mounting holes 11 therein. The housing 20 is placed on the circuit board 10 in a such manner that the elongated projections 22 are disposed perpendicular to the circuit board 10. Each of a plurality of pins 301 has a first end 302 fixed in the circuit board 10 and a second end passing through one of the mounting holes of the circuit board 10 and inserted into the through bore 222 of one of the elongated projections 22, as shown in Figure 3. Then, the pins 30 are soldered by a known related art. It is to be understood that the soldering attaches the housing 20 to the circuit board 10 strongly enough to resist undeliberate displacement, but not strongly enough to withstand a deliberate pull by an ordinary man. So, that when it is desired to remove the aluminum housing, one only has to impart a little force, thus can save a lot of work and precious time.
The four side walls of the housing 20 define a space for enclosing a transformer (not shown) also 5- provided on the circuit board 10. The aluminiun housing 20 can prevent heat and magnetic flux produced and caused by the transformer from affecting the electronic subassemblies located around the housing 20. The housing 20 further has a plurality of holes 21 in the walls which are provided to facilitate electrical connections.
GP ' 56691.705
Claims (8)
1. A circuit board having a housing mounted thereon, said housing having a plurality of bores, said circuit board having plurality of holes aligned with said bores, and there being a plurality of pins extending through said aligned holes and bores wherein said housing is secured to the circuit board so as to be held in place during normal use and the application of a predetermined force causes the housing to be separated from the circuit board.
2. A circuit board as claimed in claim 1, wherein said housing is for shielding a transformer.
3. A circuit board as claimed in claim 1 or 2 wherein said housing comprises aluminium.
4. A circuit board as claimed in any preceding claim wherein the housing is attached to said circuit board by soldering.
5. A circuit board having a shielding housing mounted thereon, characterised by: said housing having at least one side wall generally perpendicularly mounted on said circuit board, the or each said side wall having at least one elongated projection extending substantially perpendicular to said circuit board, the or each said elongated projection having a through bore formed along its length; said circuit board having a plurality of mounting holes therein; and a plurality of pins each of which has one end fixed to said circuit board and the other end passing through one of said mounting holes of said circuit board and inserted into one of said through bores of said elongated projections.
6. A circuit board as claimed in claim 5, wherein each of said elongated projections has an axial slit extending along the same.
7. A circuit board as claimed in claim 5 or 6 wherein said housing comprises aluminium.
8. A housing substantially as described heretobefor with reference to Figures 1 to 3.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914115153 DE4115153A1 (en) | 1991-05-08 | 1991-05-08 | ASSEMBLED PCB WITH AN ALUMINUM SHIELDING HOUSING |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9118060D0 GB9118060D0 (en) | 1991-10-09 |
GB2258953A true GB2258953A (en) | 1993-02-24 |
Family
ID=6431313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9118060A Withdrawn GB2258953A (en) | 1991-05-08 | 1991-08-21 | Circuit board and shielding housing |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE4115153A1 (en) |
FR (1) | FR2677211B1 (en) |
GB (1) | GB2258953A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2339052A (en) * | 1998-06-30 | 2000-01-12 | Lg Electronics Inc | Housing of a liquid crystal display |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19522455A1 (en) * | 1995-06-21 | 1997-01-02 | Telefunken Microelectron | Electromagnetic compatibility screening of electronic components esp. integrated circuits in motor vehicles |
DE29808118U1 (en) | 1998-05-06 | 1998-07-09 | E.G.O. Elektro-Gerätebau Gmbh, 75038 Oberderdingen | Attachment approach |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1066986A (en) * | 1963-07-13 | 1967-04-26 | R & S Hopt Kommanditgesellscha | Tuner with screening housing |
GB2027278A (en) * | 1978-08-04 | 1980-02-13 | Burr Brown Res Corp | Rf shield for an electronic component |
US4567317A (en) * | 1983-07-07 | 1986-01-28 | Computer Products, Inc. | EMI/RFI Protected enclosure |
EP0262332A2 (en) * | 1986-08-01 | 1988-04-06 | Siemens Aktiengesellschaft | Printed circuit board for communication art |
EP0265285A2 (en) * | 1986-10-23 | 1988-04-27 | Instrument Specialities Co., Inc. | Electromagnetic shield for printed circuit board |
GB2206745A (en) * | 1987-05-29 | 1989-01-11 | Fuji Xerox Co Ltd | One piece wiring module |
GB2209436A (en) * | 1987-08-28 | 1989-05-10 | Motorola Inc | Method and apparatus for providing emi/rfi shielding of an infrared energy reflow soldered device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1790461U (en) * | 1959-03-11 | 1959-06-18 | Nordmende | SCREEN BOWL FOR BAND FILTER ARRANGEMENTS OD. DGL. |
DE1923954A1 (en) * | 1969-05-10 | 1970-11-19 | Elmer Dipl Ing Adam | Dirt scraper ring for inner cylinder surfaces |
AU505060B2 (en) * | 1975-10-13 | 1979-11-08 | Standard Telephones And Cables Pty. Ltd | Shielded electronic equipment case |
US4945633A (en) * | 1989-03-01 | 1990-08-07 | Nokia-Mobira Oy | Method of mounting a printed circuit board and securing the earthing to a casing |
-
1991
- 1991-05-08 DE DE19914115153 patent/DE4115153A1/en active Granted
- 1991-05-29 FR FR9106682A patent/FR2677211B1/en not_active Expired - Fee Related
- 1991-08-21 GB GB9118060A patent/GB2258953A/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1066986A (en) * | 1963-07-13 | 1967-04-26 | R & S Hopt Kommanditgesellscha | Tuner with screening housing |
GB2027278A (en) * | 1978-08-04 | 1980-02-13 | Burr Brown Res Corp | Rf shield for an electronic component |
US4567317A (en) * | 1983-07-07 | 1986-01-28 | Computer Products, Inc. | EMI/RFI Protected enclosure |
EP0262332A2 (en) * | 1986-08-01 | 1988-04-06 | Siemens Aktiengesellschaft | Printed circuit board for communication art |
EP0265285A2 (en) * | 1986-10-23 | 1988-04-27 | Instrument Specialities Co., Inc. | Electromagnetic shield for printed circuit board |
GB2206745A (en) * | 1987-05-29 | 1989-01-11 | Fuji Xerox Co Ltd | One piece wiring module |
GB2209436A (en) * | 1987-08-28 | 1989-05-10 | Motorola Inc | Method and apparatus for providing emi/rfi shielding of an infrared energy reflow soldered device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2339052A (en) * | 1998-06-30 | 2000-01-12 | Lg Electronics Inc | Housing of a liquid crystal display |
GB2339052B (en) * | 1998-06-30 | 2001-03-28 | Lg Electronics Inc | Portable information processing apparatus |
US6721174B2 (en) | 1998-06-30 | 2004-04-13 | Lg. Philips Lcd Co., Ltd. | Portable information processing apparatus |
US7307833B2 (en) | 1998-06-30 | 2007-12-11 | Lg.Philips Lcd Co., Ltd. | Portable information processing apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE4115153A1 (en) | 1992-11-12 |
GB9118060D0 (en) | 1991-10-09 |
FR2677211B1 (en) | 1993-09-03 |
FR2677211A1 (en) | 1992-12-04 |
DE4115153C2 (en) | 1993-02-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |