EP0722653A1 - Metal-cored printed circuit board for insertion into the casing of an electronic device - Google Patents
Metal-cored printed circuit board for insertion into the casing of an electronic deviceInfo
- Publication number
- EP0722653A1 EP0722653A1 EP94928818A EP94928818A EP0722653A1 EP 0722653 A1 EP0722653 A1 EP 0722653A1 EP 94928818 A EP94928818 A EP 94928818A EP 94928818 A EP94928818 A EP 94928818A EP 0722653 A1 EP0722653 A1 EP 0722653A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit board
- metal
- metal core
- board according
- layer
- 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- Withdrawn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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
- H05K3/0061—Laminating printed circuit boards onto other substrates, e.g. metallic substrates onto a metallic substrate, e.g. a heat sink
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/05—Insulated conductive substrates, e.g. insulated metal substrate
- H05K1/056—Insulated conductive substrates, e.g. insulated metal substrate the metal substrate being covered by an organic insulating layer
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
- H05K7/1402—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards
- H05K7/1404—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards by edge clamping, e.g. wedges
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
- H05K7/20545—Natural convection of gaseous coolant; Heat transfer by conduction from electronic boards
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0272—Adaptations for fluid transport, e.g. channels, holes
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0393—Flexible materials
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/144—Stacked arrangements of planar printed circuit boards
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/06—Thermal details
- H05K2201/068—Thermal details wherein the coefficient of thermal expansion is important
Definitions
- Metal core circuit board for insertion into the housing of an electronic device
- the invention relates to a metal-core printed circuit board for insertion into a housing of an electronic device whose core consists of two spaced about be metallized specific webs interconnected metal plates is, are provided on the outer surfaces of the 1 5 core multi-layer insulating layers and the edge portions of at least two opposite side edges of the metal core printed circuit board are not coated.
- the heat generated during operation of the electronic components can be dissipated well, so that high dimensional stability of the plate is guaranteed so as not to endanger the conductor tracks and that light weight is also achieved in order to build the 2 * -> electronic devices to be fitted with the plates accordingly easily to be able.
- a metal core circuit board is known according to the preamble of claim 1.
- a metal core printed circuit board is known, the edges of which can be fixed in a housing by means of a spreading device, whereby an advantageous heat dissipation of
- a generic metal core circuit board has the features a) to d) of claim 1.
- the metallic core By forming the metallic core from aluminum or aluminum alloy, particularly good heat conduction and thus heat dissipation is achieved.
- the stiffening webs serve to equalize the heat.
- the structure of the plastic cover layer over the Cu-Invar layer improves heat dissipation to the metallic core and from it to the housing.
- the thickness, spacing and number of metal plates or plastic foils are preferably to be selected in accordance with the information in claims 2 to 8.
- Securing the metal core circuit board in the housing by means of a wedge lock in an area of the sliding edge which is kept free from stiffening webs contributes to the fact that the heat transfer between the metal core circuit board and housing is increased by adapting the metal plates on both sides against the groove wall of the housing.
- the wedge lock should be attached to one of the metal plates.
- Metal plates are prevented from jamming each time by hand. l must be stier and moreover a loss protection is achieved by the fastening.
- FIG. 1 schematically shows a metal core circuit board according to the invention in plan view
- Fig. 2 is a partial section through the plate corresponding to II-II of Fig. 1 and
- FIG. 3 is a partial section of the plate according to HI-HI of FIG. 1,.
- the metal core circuit board shown in plan view is designated in its entirety by 1.
- the plate shown has a rectangular shape; however, a contour deviating therefrom is also conceivable, although always two opposite
- the large edge length of the plate is labeled L.
- a cover layer 33 of the plate formed from polyimide film is kept shorter than the length L of the large edge, so that the
- the plate designed as a double web plate is provided with longitudinal and transverse stiffening webs 13, 14 to increase the bending stiffness, the stiffening webs 13 running over the length L. o Along the side edges provided with sliding edge g, an edge area b of the plate is kept free of reinforcing webs; the edge region b extends approximately over a length of 0.1 to 0.2 L. In those bridged by the stiffening webs 13, 14
- Gap wedge locks 2 are arranged in the area of the sliding edges, with which the individual plates of the double wall plate can be spread apart.
- the structure of the metal core circuit board is clear from the partial cross section according to FIG. 2.
- the core consists of two spaced-apart metal plates 11, 12 which are connected to one another via the stiffening webs 13, 14.
- a Cu-Invar layer 32 is applied to each of the outer surfaces of the metal plates 11, 12, on which a plastic cover layer 33 lies.
- the Cu-Invar layer is glued to the metal plates by means of an adhesive and the plastic cover layer is glued to the Cu-Invar layer by means of an adhesive.
- the plastic cover layer consists of a multilayer polyimide film, preferably a maximum of four film layers being used. Along the short side edges of the metal core circuit board is the one that is kept free of coating
- the wedge locks used consist of a plurality of wedge backs 22 which are seated on a screw bolt 21 and can be clamped in the axial direction by means of the screw bolt 21, as a result of which they spread outward in accordance with the arrows shown and on the inner surfaces of the metal plates 11, 12 can be pressed.
- the wedge locks can each be provided as loose components which can then be adjusted and tightened by hand in the correct position and they can be attached on one side to one of the metal plates 11, 12.
- the cover layer formed from Cu-Invar layer and ployimide films can be secured to the metal plates 11, 12 by means of screws or rivets.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Metal Substrates For Printed Circuits (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4334127 | 1993-10-07 | ||
DE4334127A DE4334127C1 (en) | 1993-10-07 | 1993-10-07 | Metal core circuit board for insertion into the housing of an electronic device |
PCT/EP1994/003206 WO1995010172A1 (en) | 1993-10-07 | 1994-09-26 | Metal-cored printed circuit board for insertion into the casing of an electronic device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0722653A1 true EP0722653A1 (en) | 1996-07-24 |
Family
ID=6499574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94928818A Withdrawn EP0722653A1 (en) | 1993-10-07 | 1994-09-26 | Metal-cored printed circuit board for insertion into the casing of an electronic device |
Country Status (6)
Country | Link |
---|---|
US (1) | US5677514A (en) |
EP (1) | EP0722653A1 (en) |
JP (1) | JPH09503347A (en) |
CA (1) | CA2173591A1 (en) |
DE (1) | DE4334127C1 (en) |
WO (1) | WO1995010172A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001050822A1 (en) * | 1999-12-30 | 2001-07-12 | Lear Automotive (Eeds) Spain, S.L. | Composite material for obtaining printed circuits, production method thereof and printed circuit board obtained from said composite material |
AU2001239090A1 (en) * | 2000-03-31 | 2001-10-15 | Dyconex Patente Ag | Electrical connecting element and method of fabricating the same |
GB0418736D0 (en) * | 2004-08-21 | 2004-09-22 | Univ Catholique Louvain | Machinable metallic composites |
JP2009147263A (en) * | 2007-12-18 | 2009-07-02 | Shinko Electric Ind Co Ltd | Wiring substrate and its manufacturing method |
US8223497B2 (en) * | 2009-09-10 | 2012-07-17 | Honeywell International Inc. | Thermal bridge extensions for a module-chassis interface |
FR3012718B1 (en) * | 2013-10-28 | 2015-12-04 | Kontron Modular Computers Sas | <P> LOCKING AN ELECTRONIC CARD </ P> |
JP6932289B2 (en) * | 2019-04-02 | 2021-09-08 | 三菱電機株式会社 | Composite printed wiring board and its manufacturing method |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3475656A (en) * | 1966-07-15 | 1969-10-28 | Collins Radio Co | Radio chassis assembly |
US3405227A (en) * | 1966-09-16 | 1968-10-08 | Control Data Corp | Multilayer universal printed circuit board |
FR2519508A1 (en) * | 1981-12-31 | 1983-07-08 | Thomson Csf | COOLING DEVICE FOR PRINTED CIRCUIT BOARD AND METHOD FOR MANUFACTURING SUCH DEVICE |
FR2544917B1 (en) * | 1983-04-21 | 1986-09-26 | Metalimphy | LIGHT SUPPORT FOR ELECTRONIC COMPONENTS |
DE3315960A1 (en) * | 1983-05-02 | 1984-11-08 | Bschorr, Oskar, Dipl.-Ing. Dr.rer.nat., 8000 München | GENERATION OF VOLTAGE DIFFERENCES |
JPS62214632A (en) * | 1986-03-14 | 1987-09-21 | Sanyo Electric Co Ltd | Hybrid integrated circuit |
US4916575A (en) * | 1988-08-08 | 1990-04-10 | Asten Francis C Van | Multiple circuit board module |
DE8811949U1 (en) * | 1988-09-21 | 1988-12-01 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Device for heat dissipation and stiffening of printed circuit board assemblies |
JPH05109919A (en) * | 1991-10-12 | 1993-04-30 | Nippondenso Co Ltd | Complex integrated circuit |
JPH0758733B2 (en) * | 1991-10-17 | 1995-06-21 | 三洋電機株式会社 | Semiconductor device |
-
1993
- 1993-10-07 DE DE4334127A patent/DE4334127C1/en not_active Expired - Fee Related
-
1994
- 1994-09-26 WO PCT/EP1994/003206 patent/WO1995010172A1/en not_active Application Discontinuation
- 1994-09-26 EP EP94928818A patent/EP0722653A1/en not_active Withdrawn
- 1994-09-26 CA CA002173591A patent/CA2173591A1/en not_active Abandoned
- 1994-09-26 JP JP7510589A patent/JPH09503347A/en active Pending
- 1994-09-26 US US08/624,558 patent/US5677514A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9510172A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2173591A1 (en) | 1995-04-13 |
JPH09503347A (en) | 1997-03-31 |
US5677514A (en) | 1997-10-14 |
WO1995010172A1 (en) | 1995-04-13 |
DE4334127C1 (en) | 1995-03-23 |
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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: 19960507 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): ES FR GB IT |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
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GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
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17Q | First examination report despatched |
Effective date: 19971222 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19980224 |