GB2324201A - Shielding construction for an electronic circuit - Google Patents
Shielding construction for an electronic circuit Download PDFInfo
- Publication number
- GB2324201A GB2324201A GB9809813A GB9809813A GB2324201A GB 2324201 A GB2324201 A GB 2324201A GB 9809813 A GB9809813 A GB 9809813A GB 9809813 A GB9809813 A GB 9809813A GB 2324201 A GB2324201 A GB 2324201A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuitboard
- shielding plate
- extending portion
- vertically extending
- horizontally extending
- 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.)
- Granted
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
- H05K9/0033—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields having multiple parts, e.g. frames mating with lids disposed on both PCB faces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6591—Specific features or arrangements of connection of shield to conductive members
- H01R13/6594—Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members
-
- 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
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0256—Details of interchangeable modules or receptacles therefor, e.g. cartridge mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
- H01R12/7011—Locking or fixing a connector to a PCB
- H01R12/7047—Locking or fixing a connector to a PCB with a fastener through a screw hole in the coupling device
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
There is provided a shielding construction for a circuitboard generating high frequency electromagnetic noise. A top shielding plate (16) formed of an electrically conductive material covers a top portion of the circuitboard, and has a first horizontally extending portion (16b) which makes contact with an outer side of the top surface of the circuitboard on each side of the top shielding plate. A bottom shielding plate (19) also formed of an electrically conductive material covers a bottom portion of the circuitboard, the bottom shielding plate having a second horizontally extending portion (19c) which makes contact with an outer side of a bottom surface of the circuitboard on each side of the bottom shielding plate. The circuitboard (14) is sandwiched between the horizontally extending portions (16b, 19c), and a vertically extending portion (16c) on the top shielding plate (16) is pressed against a vertically extending portion (19e) on the bottom shielding plate (19) to ensure good electrical contact even when foreign matter (24) is trapped between the circuitboard and the shielding plate portion (16b, 19b).
Description
"SHIELDING CONSTRUCTION FOR SHIELDING
NOISE GENERATED BY AN ELECTRONIC CIRCUIT"
The present invention generally relates to a shielding construction of an electronic apparatus, and more particularly to a shielding construction adapted to prevent radiation of high frequency electromagnetic noise generated by an electronic circuit provided in an electronic apparatus.
Many kinds of electronic apparatus such as, for example, computers generate high frequency electromagnetic noise (hereinafter called simply "noise"). This has become a great concern for electronic apparatus and appliances because the noise radiated from one electronic apparatus may affect, as a noise, performance of other electronic apparatuses. An electronic apparatus affected by the noise may malfunction or perform an erroneous operation.
In order to eliminate the above-mentioned problem, it is usual that an entire circuitboard which may generate the noise is covered with shielding plates for preventing radiation of the noise.
FIG.1 is an exploded perspective view of a conventional home use TV game machine. In the conventional TV game machine shown in FIG.1, a circuitboard 1 on which electronic circuits are formed has a card-edge connector 2 into which a game cartridge is inserted. The card-edge connector 2 is fixed on a surface of the circuitboard 1 by means of soldering. The circuitboard 1 is sandwiched between a top shielding plate 3 on an upper side and a bottom shielding plate 5 on a lower side so that the noise generated by an electronic circuit on the circuitboard 1 is prevented from being radiated to outside the TV game machine. The top shielding plate 3, the circuitboard 1 and the bottom shielding plate 5 are fixed together to a bottom case 4 by means of screws 6.
FIG.2 is an exploded view of a portion in which the card-edge connector 2 shown in FIG.1 is provided.
FIG.3 is an enlarged cross sectional view of a part of a construction for fixing the circuitboard 1 to the bottom case 4.
When a game cartridge (not shown in the figures) is inserted into a slot of the card-edge connector 2, an insertion force is applied to the game cartridge in a vertical direction (refer to FIG.8), and the insertion force is transmitted to the circuitboard 1 via the cardedge connector 2. There is a possibility that an excessive insertion force is applied by a user, which results in the circuitboard 1 being bent or broken. In order to prevent breakage of the circuitboard 1, a rib 4b is provided on an inner surface 4a of the bottom case 4 directly under the card-edge connector 2 so as to support the circuitboard 1 from under the card-edge connector 2.
In the above-mentioned construction, since the bottom shielding plate 5 exists between the circuitboard 1 and the inner surface 4a of the bottom case 4, the bottom shielding plate 5 has a slot 5a through which the rib 4a reaches the circuitboard 1. However, there is a problem in that the noise generated inside a shielding construction formed by the top shielding plate 3 and the bottom shielding plate 5 may leak through the slot 5a.
There is another problem in the above-mentioned shielding construction. FIG.4 is an illustration of a peripheral portion of the top shielding plate 3 and the bottom shielding plate 5 FIG.5 is a cross sectional view of the peripheral portion shown in FIG.4.
As shown in FIG.5, a peripheral portion 3a of the top shielding plate 3 is in contact with a peripheral portion 5a of the bottom shielding plate 5 so that a potential of the top shielding plate 3 becomes the same as that of the bottom shielding plate 5 in order to effectively shield the circuitboard 1 inside the shielding construction.
FIG.6A is a cross sectional view of the peripheral portion in a case where some foreign matter exists or. a top surface of the circuitboard 1. FIG.6B is a cross sectional view of the peripheral portion in a case where some foreign matter exists on a bottom surface of the circuitboard 1. The foreign matter 6 shown in FIGS.6A and 6B may be a drop of solder attached during a manufacturing process of the circuitboard 1. In either case shown in FIG. 6A or 6B, a good contact between the peripheral portion 3a of the top shielding plate 3 and the peripheral portion 5a of the bottom shielding plate 5 is not achieved, and thus a good shielding effect of the shielding construction cannot be obtained.
Accordingly, it is a general object of the present invention to provide an improved and useful shielding construction of a circuitboard in which the above-mentioned disadvantages are eliminated.
A more specific object of the present invention is to provide a shielding construction which can prevent breakage of a circuitboard provided therein without allowing a noise leakage from the shielding construction.
Another object of the present invention is to provide a shielding construction in which a top shielding plate makes good contact with a bottom shielding plate even if a foreign matter exists on a circuitboard, so that a good shielding effect can be maintained.
In order to achieve the above-mentioned objects, there is provided according to one aspect of the present invention, a shielding construction of a circuitboard generating high frequency electromagnetic noise, a connector being fixed on the circuitboard to which connector an insertion force is applied in a direction perpendicular to a top surface of the circuitboard when making a connection, the shielding construction comprising:
a top shielding plate formed of an electrically conductive material for covering a top portion of the circuitboard, the top shielding plate having a first horizontally extending portion which makes contact with an outer side of the top surface of the circuitboard on each side of the top shielding plate;
a bottom shielding plate formed of an electrically conductive material for covering a bottom portion of the circuitboard, the bottom shielding plate having a second horizontally extending portion which makes contact with an outer side of a bottom surface of the circuitboard on each side of the bottom shielding plate;
a spacer positioned between the bottom shielding plate and the circuitboard; and
a table supporting the bottom shielding plate from under the bottom shielding plate,
wherein the circuitboard is sandwiched between the first horizontally extending portion and the second horizontally extending portion, and
the spacer is positioned directly under a portion of the circuitboard on which the connector is fixed, and the table is positioned directly under the spacer with the bottom plate therebetween.
There is provided, according to another aspect of the present invention, a shielding construction of a circuitboard generating a high frequency electromagnetic noise, a connector being fixed on the circuitboard to which connector an insertion force is applied in a direction perpendicular to a top surface of the circuitboard when making a connection, the shielding construction comprising:
a top shielding plate formed of an electrically conductive material for covering a top portion of the circuitboard, the top shielding plate having a first horizontally extending portion which makes contact with an outer side of the top surface of the circuitboard on each side of the top shielding plate; and
a bottom shielding plate formed of an electrically conductive material for covering a bottom portion of the circuitboard, the bottom shielding plate having a second horizontally extending portion which makes contact with an outer side of a bottom surface of the circuitboard on each side of the bottom shielding plate,
wherein the circuitboard is sandwiched between the first horizontally extending portion and the second horizontally extending portion, and
a first vertically extending portion extending perpendicular to the first horizontally extending portion is provided on each side of the top shielding plate and a second vertically extending portion extending perpendicular to the second horizontally extending portion is provided on each side of the bottom shielding plate, the first vertically extending portion being pressed on the second vertically extending portion in a horizontal direction when the top shielding plate is assembled to the bottom shielding plate so that the first vertically extending portion makes a good electrical contact with the second vertically extending portion.
Other objects, features and advantages of the present invention will become more apparent from the following detailed description when read in conjunction with the accompanying drawings.
FIG.1 is an exploded perspective view of a conventional home use TV game machine;
FIG.2 is an exploded view of a portion in which a card-edge connector shown in FIG.1 is provided; rIG.3 is an enlarged cross sectional view of a part of a construction of fixing a circuitboard to a bottom case shown in FIG.1;
FIG.4 is an illustration of a peripheral portion of a top shielding plate and a bottom shielding plate shown in FIG.1; FIG.5 is a cross sectional view of the peripheral portion shown in FIG.4; FIG. 6A is a cross sectional view of the peripheral portion in a case where a foreign matter exists on a top surface of the circuitboard;
FIG.6B is a cross sectional view of the peripheral portion in a case where a foreign matter exists on a bottom surface of the circuitboard;
FIG.7 is a perspective view of a home use TV game machine in which a shielding construction according to the present invention is provided;
FIG.8 is an exploded view of the TV game machine shown in FIG.7;
FIG.9 is an exploded view of a portion in which a card-edge connector shown in FIG.8 is provided;
FIG.10 is an enlarged cross sectional view of a part of a construction of fixing a circuitboard to a bottom case shown in FIG.8; FIG. 11 is a perspective view of rake-like portions and a vertically extending portion shown in
FIG.8; FIG.12 is a cross sectional view of a portion around the rake-like portions and the vertically extending portion in a state where a top shielding plate and a bottom shielding plate are assembled;
FIG.13 is a cross sectional view of a portion around the rake-like portions and the vertically extending portion in a state where a foreign matter is attached on a top surface of a circuitboard; and
FIG.14 is a cross sectional view of a portion around the rake-like portions and the vertically extending portion in a state where a foreign matter is attached on a bottom surface of a circuitboard.
A description will now be given of an embodiment of a shielding construction according to the present invention. FIG.7 shows a home use TV game machine 11 in which a shielding construction according to the present invention is provided.
Generally, a casing of the TV game machine 11 is made of a hard plastic. When in use, a portion of a game cartridge 12 is inserted into a slot formed on a main body 13. The game cartridge 12 is provided with a ROM storing software for a game.
FIG.8 is an exploded view of the TV game machine 11 shown in FIG.7. In FIG.8, only parts related to a shielding construction according to the present invention are shown.
Similarly to the above-mentioned conventional TV game machine, a card-edge connector 15 is fixed on a circuitboard 14 on which electronic circuits are formed.
The game cartridge 12 shown in FIG.7 is inserted into a slot 15b. The card-edge connector 15 is fixed on the circuitboard 14 by means of soldering.
A top shielding plate 16 is provided on an upper side of the circuitboard 14, a shape of the shielding plate 16 being generally the same as that of the circuitboard 14. A bottom shielding plate 19 is provided on a lower side of the circuitboard 14, a shape of the bottom shielding plate being generally the same as that of the circuitboard 14. The top shielding plate 16, the circuitboard 14 and the bottom shielding plate 19 are fixed to a bottom case 17 made of a hard plastic by means of screws 22.
On an inner surface 17a of the bottom case 17, a table 18 is formed in a position generally corresponding to an area where the card-edge connector 15 is located.
As is best shown in FIG.9, the table 18 comprises an outer portion 18a, two cylindrical ribs 18b and a center rib 18c. One cylindrical rib 18b is located on one end of the table 18 and the other cylindrical rib 18b is located on an opposite side of the table 18. The center rib 18c extends between the two cylindrical ribs 18b, and the outer portion 18a surrounds the cylindrical ribs 18b and the center rib 18c. A height of each of the cylindrical ribs 18b is slightly greater than that of the outer portion 18a and the center rib 18c. A thickness of each of the outer portion 18a and the center rib 18c is the same as a thickness of the bottom case 17 so that the table 18 is formed with less deformation due to volume reduction in a molding process of the bottom case 17.
The bottom shielding plate 19 has two holes l9a corresponding to the cylindrical ribs 18b, respectively, so that in an assembled state the bottom shielding plate 19 makes contact with a top surface of each of the outer portion 18a and the center rib 18c.
The bottom shielding plate 19 is made of an electrically conductive material such as a metal plate or an aluminum plated paper board. The bottom shielding plate 19 has a generally square and shallow box shape having a bottom plate 19a so that the circuitboard 14 is accommodated in the bottom shielding plate 19. A terrace 19t and 19c is formed near a corner of two sides of the bottom plate 19a. The circuitboard 14 is placed on the terrace l9b and spacer 20b (described later) placed on the bottom plate 19a so that a space is formed between a bottom surface of the circuitboard 14 and the bottom plate 19a of the bottom shielding plate 19. A vertical distance between the terraces l9b and l9c is the same as a thickness of the circuitboard 14. Steps 19d are formed on sides other than the sides on which the terraces 19b are formed. A height of each of the terraces 19d measured from the bottom plate 19a is the same as the height of the terraces 19b measured from the bottom plate l9a.
Vertically extending portions l9e are formed on an outer side of each of the terraces l9c and the terraces l9d.
The terraces 19b are supported by corresponding bosses 17c formed on each corner of the bottom case 17 when the bottom shielding plate 19 is assembled to the bottom case 17.
The spacer 20 is placed on the bottom plate l9a of the bottom shielding plate 19 so that the card-edge connector 15 fixed on the circuitboard 14 is positioned directly above the spacer 20. The spacer 20 is made of a non-conductive material such as a hard plastic. A shape of the spacer 20 is generally the same as that of the table 18 formed on the bottom case 17. Two through holes 20b are formed on the spacer 20 in positions corresponding to the cylindrical ribs 18b of the table 18. Similarly to the table 18, the spacer 20 has an outer portion 20a and a center rib 20c. A thickness of the spacer is the same as the height of the terrace l9b measured from the bottom plate 19a. The circuitboard 14 is placed on the terraces 19b and the spacer 20.
The card-edge connector 15 has a plurality of thin pins 15c protruded from a bottom surface thereof as shown in FIG.10. The card-edge connector 15 is placed on the circuitboard 14 so that the pins 15c are inserted into through holes 14b correspondingly formed on the circuitboard 14. The pins 15c are soldered to the circuitboard 14 on bottom surface thereof. In this state, through holes 15a formed on each side of the card-edge connector 15 align with through holes 14a formed on the circuitboard 14 which correspond to the through holes 20b of the spacer 20.
The bottom shielding plate 19, the spacer 20 and the circuitboard 14 on which the card-edge connector 15 is fixed are placed, in that order, on the bottom case 17 so that the corresponding cylindrical ribs 18b and through holes 19a, 20b 14a and 15a are aligned. Screws 21 are then inserted into the aligned holes so as to fix these parts together to the cylindrical ribs 18b on the bottom case 17. It should be noted that an end of each of the pins 15c protruding from the bottom surface of the circuitboard 14 is positioned within spaces formed between the outer portion 20a and the center rib 20c of the spacer 20. In this state, the circuitboard 14 is placed on the bosses 17c via the bottom shielding plate 19.
The top shielding plate 16 is made of an electrically conductive material similar to the bottom shielding plate 19. The top shielding plate 16 is formed like generally a square shallow box shape so as to cover an entire circuitboard 14. A height h of the top shielding plate 16 is greater than heights of electronic parts mounted on the circuitboard 14. A flat top surface of the top shielding plate 16 is provided with an opening 16a in a position directly above the card-edge connector 15 so that the game cartridge 12 can be inserted through the opening 16a into the card-edge connector 15.
On each side of the top shielding plate 16, there are provided horizontally extending portions 16b extending horizontally from each side of the top shielding plate 16. A plurality of rake-like portions 16c are raised from an end of the extending portion so that the rake-like portions 16c make contact with the vertically extending portions 19e when the top shielding plate 16 is assembled to the bottom shielding plate 19.
The top shielding plate 16, the circuitboard 14, and the bottom shielding plate 19 are together fixed by screws 22 inserted into through holes 16d formed on the extending portions 16b to the bosses 17c formed on the bottom case 17.
As mentioned above, the circuitboard 14 is entirely covered with the top shielding plate 16 and the bottom shielding plate 19 which are made of a conductive material, and thus radiation of the noise generated by the circuitboard 14 is prevented. Additionally, since the portion of the circuitboard 14 on which the card-edge connector 15 is fixed is supported by the spacer 20 and the table 18 formed on a bottom plate 17 of the bottom case 17, the circuitboard 14 is not bent or broken when an excessive insertion force of a game cartridge is applied to the card-edge connector 15.
It should be noted that if the insertion force of the game cartridge is 6kgf, for example, a force applied to the card-edge connector 15 in an opposite direction when the game cartridge is being detached is about 4.5kgf. Accordingly, if the card-edge connector 15 is not fixed, the card-edge connector 15 may be lifted up together with the circuitboard 14, and thus the circuitboard 14 may be bent or broken. The card-edge connector 15 is fixed to the cylindrical ribs 18b of the table 18 formed on the bottom case 17 so that the cardedge connector 15 together with the circuitboard 14 is not lifted up when the game card is detached from the cardedge connector 15.
A description will now be given of an effect of the rake-like portions 16c of the top shielding plate 16.
The rake-like portions 16c are provided for making a good electrical contact between the top shielding plate 16 and the bottom shielding plate 19 in associate with the vertically extending portions 19e of the bottom shielding plate 19.
FIG.11 is a perspective view of the rake-like portions 16c and the vertically extending portions 19e.
Each of the rake-like portions 16c has a relatively narrow width and bent upward and slightly outward so that each of the rake-like portions 16c can be elastically bent. An end portion of each of the rake-like portions 16c is bent to be extended in a vertical direction. The end portion of the rake-like portion 16c is formed so that the end portion is elastically pressed on the vertically extending portion 19e when the top shielding plate 16 is assembled to the bottom shielding plate 19.
FIG.12 is a cross sectional view of a portion around the rake-like portion 16c and the vertically extending portion 19e in a state where the top shielding plate 16 and the bottom shielding plate 19 are assembled.
As shown in FIG.12, the horizontally extending portion 16b of the top shielding plate 16 is in contact with the terrace 19c of the bottom shielding plate 19.
Additionally, the end portion of the rake-like portion 16c is in contact with the vertically extending portion 19e of the bottom shielding plate 19 in a state where the top shielding plate 16 is assembled to the bottom shielding plate 19 with the circuitboard 14 therebetween.
Accordingly, the top shielding plate 16 and the bottom shielding plate 19 make a good electrical contact with each other.
FIG.13 is a cross sectional view of a portion around one of the rake-like portions 16c and the vertically extending portion l9e in a state where a foreign matter 24 such as a solder drop is attached on a top surface of the circuitboard 14. FIG.14 is a cross sectional view of a portion around one of the rake-like portions 16c and the vertically extending portion 19 in a state where a foreign matter 24 such as a solder drop is attached on a bottom surface of the circuitboard 14. In either case, the horizontally extending portion 16b is not in contact with the terrace l9c but the end portion of the rake-like portion 16c is in contact with the vertically extending portion 19e. Accordingly, a good electrical contact is maintained even if there is the foreign matter attached on either surface of the circuitboard 14 or an desired protrusion is formed on either surface of the circuitboard 14. Thus, a good shielding effect is maintained in various assembled conditions of the top shielding plate 16 and the bottom shielding plate 19.
Reference is made to application No. 9416761.6, published as 2 292 483, from which the present application is divided
Claims (3)
- CLAIMS: 1. A shielding construction for a circuitboard which generates a high frequency electromagnetic noise, the circuit board having a connector fixed on said circuitboard and to which connector an insertion force is applied in a direction perpendicular to a top surface of said circuitboard when making a connection to the circuitboard, the shielding construction comprising: a ,top shielding plate formed of an electrically conductive material for covering a top portion of the circuitboard, said top shielding plate having a first horizontally extending portion for making contact with an outer side of said top surface of said circuitboard on each side of said top shielding plate; and a bottom shielding plate formed of an electrically conductive material for covering a bottom portion of the circuitboard, said bottom shielding plate having a second horizontally extending portion for making contact with an outer side of a bottom surface of said circuitboard on each side of said bottom shielding plate, wherein, in use, said circuitboard is sandwiched between said first horizontally extending portion and said second horizontally extending portion, and a first vertically extending portion extending perpendicular to said first horizontally extending portion is provided on each side of said top shielding plate and a second vertically extending portion extending perpendicular to said second horizontally extending portion is provided on each side of said bottom shielding plate, said first vertically extending portion being pressed on said second vertically extending portion in a horizontal direction when said top shielding plate is assembled to said bottom shielding plate so that said first vertically extending portion makes a good electrical contact with said second vertically extending portion.
- 2 A shielding construction as claimed in claim 1, wherein said first vertically extending portion is divided into a plurality of rake-like portions having a predetermined width.
- 3. The shielding construction as claimed in claim 2, wherein each of said rake-like portions comprises a base portion and an end portion, said base portion extending slightly off from a vertical direction, said end portion extending perpendicular to the vertical direction, said vertical direction being perpendicular to an extending direction of said first horizontally extending direction of said top surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9809813A GB2324201B (en) | 1994-08-18 | 1994-08-18 | Shielding construction for shielding noise generated by an electronic circuit |
| HK99100158A HK1015117A1 (en) | 1994-08-18 | 1999-01-14 | Shielding construction for shielding noise generated by an electronic circuit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9809813A GB2324201B (en) | 1994-08-18 | 1994-08-18 | Shielding construction for shielding noise generated by an electronic circuit |
| GB9416761A GB2292483B (en) | 1994-08-18 | 1994-08-18 | Shielding construction for shielding noise generated by an electronic circuit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9809813D0 GB9809813D0 (en) | 1998-07-08 |
| GB2324201A true GB2324201A (en) | 1998-10-14 |
| GB2324201B GB2324201B (en) | 1998-12-23 |
Family
ID=10760073
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9809813A Expired - Fee Related GB2324201B (en) | 1994-08-18 | 1994-08-18 | Shielding construction for shielding noise generated by an electronic circuit |
| GB9416761A Expired - Fee Related GB2292483B (en) | 1994-08-18 | 1994-08-18 | Shielding construction for shielding noise generated by an electronic circuit |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9416761A Expired - Fee Related GB2292483B (en) | 1994-08-18 | 1994-08-18 | Shielding construction for shielding noise generated by an electronic circuit |
Country Status (2)
| Country | Link |
|---|---|
| GB (2) | GB2324201B (en) |
| HK (1) | HK1011140A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2063493A1 (en) * | 2007-10-08 | 2009-05-27 | Valeo Vision | Electronic module comprising a shielded connector attached to an integrated circuit board by means of a shield attachment tab |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3202163B2 (en) * | 1996-03-05 | 2001-08-27 | ヒロセ電機株式会社 | PC card and frame kit therefor |
| DE19956184A1 (en) * | 1999-11-22 | 2001-06-21 | Iad Gmbh | Shielding housing |
| JP2023155812A (en) * | 2022-04-11 | 2023-10-23 | 株式会社ソニー・インタラクティブエンタテインメント | Electronic apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386388A (en) * | 1981-09-04 | 1983-05-31 | Northern Telecom Limited | Printed circuit board assembly |
| EP0548728A1 (en) * | 1991-12-21 | 1993-06-30 | Hoechst Aktiengesellschaft | Filler composition based on polyester |
| US5323298A (en) * | 1992-07-13 | 1994-06-21 | Shatas Remigius G | Integral enclosure and shield for EMI radiating circuitry |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU670945B2 (en) * | 1992-08-21 | 1996-08-08 | Whitaker Corporation, The | Grounded memory cards |
-
1994
- 1994-08-18 GB GB9809813A patent/GB2324201B/en not_active Expired - Fee Related
- 1994-08-18 GB GB9416761A patent/GB2292483B/en not_active Expired - Fee Related
-
1998
- 1998-11-09 HK HK98111862A patent/HK1011140A1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4386388A (en) * | 1981-09-04 | 1983-05-31 | Northern Telecom Limited | Printed circuit board assembly |
| EP0548728A1 (en) * | 1991-12-21 | 1993-06-30 | Hoechst Aktiengesellschaft | Filler composition based on polyester |
| US5323298A (en) * | 1992-07-13 | 1994-06-21 | Shatas Remigius G | Integral enclosure and shield for EMI radiating circuitry |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2063493A1 (en) * | 2007-10-08 | 2009-05-27 | Valeo Vision | Electronic module comprising a shielded connector attached to an integrated circuit board by means of a shield attachment tab |
| US7867030B2 (en) | 2007-10-08 | 2011-01-11 | Valeo Vision | Electronic module comprising a shielded connector fixed to an integrated circuit card by means of a lug for fixing the shielding |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2292483A (en) | 1996-02-21 |
| GB2292483B (en) | 1998-12-23 |
| GB9809813D0 (en) | 1998-07-08 |
| GB2324201B (en) | 1998-12-23 |
| HK1011140A1 (en) | 1999-07-02 |
| GB9416761D0 (en) | 1994-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7435139B2 (en) | Electrical connector having improved shield | |
| US7232316B2 (en) | Electrical connector with improved shielding means | |
| JP3118454U (en) | Electrical connector | |
| US5329422A (en) | Portable electronic apparatus having optional components in a shielded recess for function expansion | |
| JP2006134859A (en) | Electric connector | |
| JPH0515361U (en) | Filter connector and shielding plate for filter connector | |
| JP4348725B2 (en) | Socket for mounting electronic parts | |
| US8558121B2 (en) | Electronic device having an electromagnetic shield | |
| US5463531A (en) | PCMCIA electronics housing | |
| US6469912B1 (en) | Electrical apparatus having a cover member adapted to provide electromagnetic interference shielding to an electronic component | |
| US7247041B2 (en) | Land grid array connector | |
| JP2000277193A (en) | Low-profile board-mounted electric connector | |
| GB2324201A (en) | Shielding construction for an electronic circuit | |
| JP4890400B2 (en) | Electronic circuit module | |
| KR100585938B1 (en) | Connector having a shell which can readily be fixed to a connector housing | |
| EP1209775B1 (en) | Modular jack | |
| JP2006165201A (en) | Circuit module device | |
| US6977822B2 (en) | Shield case for electronic apparatus | |
| EP1209774B1 (en) | Modular jack and an attaching structure of a modular jack | |
| US6722921B1 (en) | Electrical card connector | |
| KR100738348B1 (en) | Electromagnetic wave shield cover for display apparatus | |
| JP2003062338A (en) | Cartridge for game machine | |
| JP3191718B2 (en) | Electronic equipment with noise shield structure | |
| JP3529992B2 (en) | Ground terminal mounting structure for electronic equipment | |
| JP4355651B2 (en) | Shield structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20030818 |