GB2159007A - Anisotropic connectors for connecting printed circuit boards - Google Patents

Anisotropic connectors for connecting printed circuit boards Download PDF

Info

Publication number
GB2159007A
GB2159007A GB08505736A GB8505736A GB2159007A GB 2159007 A GB2159007 A GB 2159007A GB 08505736 A GB08505736 A GB 08505736A GB 8505736 A GB8505736 A GB 8505736A GB 2159007 A GB2159007 A GB 2159007A
Authority
GB
United Kingdom
Prior art keywords
conductive
lamella
layers
conductors
electrical connector
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Withdrawn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
GB08505736A
Other versions
GB8505736D0 (en
Inventor
Colin Sydney Osborne
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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB8505736D0 publication Critical patent/GB8505736D0/en
Publication of GB2159007A publication Critical patent/GB2159007A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2414—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means conductive elastomers
    • 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
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/325—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by abutting or pinching, i.e. without alloying process; mechanical auxiliary parts therefor
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/68—Structural association with built-in electrical component with built-in fuse

Abstract

An electrical connector 10 comprises a body consisting of a number of thin layers of resilient insulating material 14 separated by thin layers of conductive resilient material 12 to form conductive paths through the connector body. The conductive medium embodied in the layers of conductive material is carbon fibre. A triangular connector 36 is formed likewise. The resilient material is a silicon polymer. <IMAGE>

Description

SPECIFICATION Improvements in electrical connectors This invention relatestoelectricalconnectorssuit- able forforming insulated conductive paths between two corn ponents each having a plurality of electrical contacts formed thereon. Examples of such components are printed circuit boards having rows of conductors terminating along the edges ofthe boards.
It is an object of the present invention to provide an electrical connectorwhich should be significantly cheaper than known mechanical type connectors and which will not require accurate positioning to form electrical connections with the electrical contacts.
According to the present invention an electrical connector comprises a body comprising at leasttwo layers of insulating resilient material separated by a lamella of conductive material so as to form a conductive path through the body, the lamella comprising a resilient material containing a plurality of carbon fibres.
Preferably the resilient material comprises a silicon elastomersuch as a silicon polymer. The carbon fibres may consist of chopped strands or bunches arranged in a random manner in the conductive lamella or may be in the form of a woven or knitted mat so thatthe lamella is conductive on any direction. Alternatively the carbon fibres may be arranged in a disciplined manner so thatthe conductive lamella is only conductive between two or more edges ofthe lamella. The carbon fibres may be individually plated with a metal, such ascopperto improve their conductivity.
Preferably there are provided a plurality of conductive lamella separated by a plurality of insulating layers,theconductivelamellae having averyfine pitch, e.g. oftheorderof O.1mm.
Embodiments of the invention will now be described by way of example only with reference to the accompanying drawings in which: Figure lisa perspective view of an electrical connector according to the invention; Figure 2 is a perspective view ofthe electrical connector of Figure 1 used between two conductor carrying substrates; and, Figure 3 is a view of a number of electrical connectors positioned between several printed circuit boards.
The electrical connector 10 shown in Figure 1 comprises a plurality of thin layers 12 of silicon elastomer, each having a filling of carbon fibres, separated by thin layers 140f unfilled silicon elastom er,thefilled and unfilled layers being bonded together. The connector can be sliced into thinner portions or cut to particular shapes to suit various applications. The silicon elastomer can be a silicon polymer. The carbon fibre filling consists of random chopped strands, bunches or a woven or knitted mat or any other suitable arrangements so thatthefilled layers can be conductive in any direction. Alternative lythe carbon fibres may be arranged in a disciplined mannersothatthefilled layers are only conductive between two or more edges of the layers.The fibres can be individually plated with a metal, such as copper,to improve conductivity if required.
Atypical pitch of the conductive layers 12 could be of the order 0.1 mm enabling a substrate 16 with spaced conductors 18 having a pitch of, for example, 2mm to be connected to another substrate 20 with conductors 23 on its underside. The conductors 18 and 23 are of similar pitch and the connector 10 is located between the substrates 16 and 20 as shown in Figure 2. Since the pitch of the conductive layers 12 is so much finerthan the pitch of the conductors 18 and 23, opposing conductors will be connected by around 20 conductive layers 12withoutthe needforthe connector 10 to be accurately positioned relative to the substrates 16 and 20. The resilience of the connector 10 also enables gas-tightjointsto be formed between the substrates and the connector 10.
Figure 3 illustrates a number of connectors 10 and 36 arranged between three printed circuit boards 30, 32 and 34. The boards 30 and 32 are similarto the substrates 16 and 20 of Figure 2, with the board 32 having conductors on its underside which are connected to conductors on the upperside of board 30 by the conductive layers 12.
The board 34 is perpendicular to the board 32 and has conductors (not shown) on both sides. The conductors on the underside ofthe board 32 are connected to the conductors on the board 34 by connectors 36 having a triangular cross-section.
These also serve to support the board 34 whilst permitting a degree of relative movement between the boards 32 and 34withoutthe electrical connections being broken.
Itwill be seen thatthe electrical connector can be cut or moulded to many cross-sectional shapes depending on the application, such as polygonal, circular, annular, eliptical, etc.
1. An electrical connector comprising a body comprising at leasttwo layers of insulating resilient material separated buy a lamella of conductive material so as to form a conductive path through the body, the lamella comprising a resilient material containing a plurality of carbon fibres.
2. An electrical connector as claimed in claim 1 in which the resilient material comprises a silicon elastomer.
3. An electrical connector as claimed in claims 1 or 2 in which the carbon fibres consist of chopped strands or bunches arranged in a random manner in the conductive lamella.
4. An electrical connector as claimed in claims 1 or 2 in which the carbon fibres are in the form of a woven or knitted mat.
5. An electrical connector as claimed in claims 1 or 2 in which the carbon fibres are arranged in a disciplined manner in the conductive lamella so that the conductive lamella is only conductive between two or more edges of the lamella.
6. An electrical connector as claimed in any preceding claim in which the carbon fibres are The drawing(s) originally filed were informal and the print here reproduced is taken from a later filed formal copy.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improvements in electrical connectors This invention relatestoelectricalconnectorssuit- able forforming insulated conductive paths between two corn ponents each having a plurality of electrical contacts formed thereon. Examples of such components are printed circuit boards having rows of conductors terminating along the edges ofthe boards. It is an object of the present invention to provide an electrical connectorwhich should be significantly cheaper than known mechanical type connectors and which will not require accurate positioning to form electrical connections with the electrical contacts. According to the present invention an electrical connector comprises a body comprising at leasttwo layers of insulating resilient material separated by a lamella of conductive material so as to form a conductive path through the body, the lamella comprising a resilient material containing a plurality of carbon fibres. Preferably the resilient material comprises a silicon elastomersuch as a silicon polymer. The carbon fibres may consist of chopped strands or bunches arranged in a random manner in the conductive lamella or may be in the form of a woven or knitted mat so thatthe lamella is conductive on any direction. Alternatively the carbon fibres may be arranged in a disciplined manner so thatthe conductive lamella is only conductive between two or more edges ofthe lamella. The carbon fibres may be individually plated with a metal, such ascopperto improve their conductivity. Preferably there are provided a plurality of conductive lamella separated by a plurality of insulating layers,theconductivelamellae having averyfine pitch, e.g. oftheorderof O.1mm. Embodiments of the invention will now be described by way of example only with reference to the accompanying drawings in which: Figure lisa perspective view of an electrical connector according to the invention; Figure 2 is a perspective view ofthe electrical connector of Figure 1 used between two conductor carrying substrates; and, Figure 3 is a view of a number of electrical connectors positioned between several printed circuit boards. The electrical connector 10 shown in Figure 1 comprises a plurality of thin layers 12 of silicon elastomer, each having a filling of carbon fibres, separated by thin layers 140f unfilled silicon elastom er,thefilled and unfilled layers being bonded together. The connector can be sliced into thinner portions or cut to particular shapes to suit various applications. The silicon elastomer can be a silicon polymer. The carbon fibre filling consists of random chopped strands, bunches or a woven or knitted mat or any other suitable arrangements so thatthefilled layers can be conductive in any direction. Alternative lythe carbon fibres may be arranged in a disciplined mannersothatthefilled layers are only conductive between two or more edges of the layers.The fibres can be individually plated with a metal, such as copper,to improve conductivity if required. Atypical pitch of the conductive layers 12 could be of the order 0.1 mm enabling a substrate 16 with spaced conductors 18 having a pitch of, for example, 2mm to be connected to another substrate 20 with conductors 23 on its underside. The conductors 18 and 23 are of similar pitch and the connector 10 is located between the substrates 16 and 20 as shown in Figure 2. Since the pitch of the conductive layers 12 is so much finerthan the pitch of the conductors 18 and 23, opposing conductors will be connected by around 20 conductive layers 12withoutthe needforthe connector 10 to be accurately positioned relative to the substrates 16 and 20. The resilience of the connector 10 also enables gas-tightjointsto be formed between the substrates and the connector 10. Figure 3 illustrates a number of connectors 10 and 36 arranged between three printed circuit boards 30, 32 and 34. The boards 30 and 32 are similarto the substrates 16 and 20 of Figure 2, with the board 32 having conductors on its underside which are connected to conductors on the upperside of board 30 by the conductive layers 12. The board 34 is perpendicular to the board 32 and has conductors (not shown) on both sides. The conductors on the underside ofthe board 32 are connected to the conductors on the board 34 by connectors 36 having a triangular cross-section. These also serve to support the board 34 whilst permitting a degree of relative movement between the boards 32 and 34withoutthe electrical connections being broken. Itwill be seen thatthe electrical connector can be cut or moulded to many cross-sectional shapes depending on the application, such as polygonal, circular, annular, eliptical, etc. CLAIMS
1. An electrical connector comprising a body comprising at leasttwo layers of insulating resilient material separated buy a lamella of conductive material so as to form a conductive path through the body, the lamella comprising a resilient material containing a plurality of carbon fibres.
2. An electrical connector as claimed in claim 1 in which the resilient material comprises a silicon elastomer.
3. An electrical connector as claimed in claims 1 or 2 in which the carbon fibres consist of chopped strands or bunches arranged in a random manner in the conductive lamella.
4. An electrical connector as claimed in claims 1 or 2 in which the carbon fibres are in the form of a woven or knitted mat.
5. An electrical connector as claimed in claims 1 or 2 in which the carbon fibres are arranged in a disciplined manner in the conductive lamella so that the conductive lamella is only conductive between two or more edges of the lamella.
6. An electrical connector as claimed in any preceding claim in which the carbon fibres are The drawing(s) originally filed were informal and the print here reproduced is taken from a later filed formal copy.
individually plated with a metal to improve their conductivity.
7. An electrical connector constructed as hereinbefore described with reference to the accompanying drawings.
GB08505736A 1984-03-21 1985-03-06 Anisotropic connectors for connecting printed circuit boards Withdrawn GB2159007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848407276A GB8407276D0 (en) 1984-03-21 1984-03-21 Electrical connectors

Publications (2)

Publication Number Publication Date
GB8505736D0 GB8505736D0 (en) 1985-04-11
GB2159007A true GB2159007A (en) 1985-11-20

Family

ID=10558411

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848407276A Pending GB8407276D0 (en) 1984-03-21 1984-03-21 Electrical connectors
GB08505736A Withdrawn GB2159007A (en) 1984-03-21 1985-03-06 Anisotropic connectors for connecting printed circuit boards

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848407276A Pending GB8407276D0 (en) 1984-03-21 1984-03-21 Electrical connectors

Country Status (2)

Country Link
JP (1) JPS60212980A (en)
GB (2) GB8407276D0 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199007A2 (en) * 1985-04-23 1986-10-29 Bodenseewerk Gerätetechnik GmbH Circuit board arrangement for high accelerations
EP0269777A1 (en) * 1986-09-29 1988-06-08 Tektronix, Inc. Method of manufacturing a contact member
DE3790222T1 (en) * 1986-04-30 1989-05-03 Televerket CONTACT DEVICE
GB2215661B (en) * 1988-02-15 1992-10-28 Shinetsu Polymer Co Hot-melt adhesive interconnector and method for the preparation thereof
US5190674A (en) * 1990-04-04 1993-03-02 Monks James H Method and apparatus for controlling the flow of molten metals
US5346401A (en) * 1993-04-22 1994-09-13 Motorola, Inc. Electrical connector for translating between first and second sets of terminals having different pitches
US6669090B2 (en) 2000-08-10 2003-12-30 Novo Nordick A/S Electronic marking of a medication cartridge
US6994261B2 (en) 2000-08-10 2006-02-07 Novo Nirdisk A/S Support for a cartridge for transferring an electronically readable item of information from the cartridge to an electronic circuit
US7264482B2 (en) 2004-03-10 2007-09-04 J.S.T. Mfg. Co., Ltd. Anisotropic conductive sheet
US7922096B2 (en) 2000-08-10 2011-04-12 Novo Nordisk A/S Support for a cartridge for transferring an electronically readable item of information from the cartridge to an electronic circuit
US8049519B2 (en) 2006-04-26 2011-11-01 Novo Nordisk A/S Contact free absolute position determination of a moving element in a medication delivery device
US8197449B2 (en) 2005-05-10 2012-06-12 Novo Nordisk A/S Injection device comprising an optical sensor
US8348904B2 (en) 2007-03-21 2013-01-08 Novo Nordisk A/S Medical delivery system having container recognition and container for use with the medical delivery system
US8608079B2 (en) 2006-03-20 2013-12-17 Novo Nordisk A/S Contact free reading of cartridge identification codes
US8638108B2 (en) 2005-09-22 2014-01-28 Novo Nordisk A/S Device and method for contact free absolute position determination
US8994382B2 (en) 2006-04-12 2015-03-31 Novo Nordisk A/S Absolute position determination of movably mounted member in medication delivery device
US9950117B2 (en) 2009-02-13 2018-04-24 Novo Nordisk A/S Medical device and cartridge

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920000965B1 (en) * 1984-12-20 1992-01-31 에이 엠 피 인코포레이티드 Layered elastomeric connector and process for its manufacture

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998513A (en) * 1975-01-31 1976-12-21 Shinetsu Polymer Co., Ltd Multi-contact interconnectors

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998513A (en) * 1975-01-31 1976-12-21 Shinetsu Polymer Co., Ltd Multi-contact interconnectors

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199007A2 (en) * 1985-04-23 1986-10-29 Bodenseewerk Gerätetechnik GmbH Circuit board arrangement for high accelerations
EP0199007A3 (en) * 1985-04-23 1988-07-27 Bodenseewerk Gerätetechnik GmbH Circuit board arrangement for high accelerations
DE3790222T1 (en) * 1986-04-30 1989-05-03 Televerket CONTACT DEVICE
EP0269777A1 (en) * 1986-09-29 1988-06-08 Tektronix, Inc. Method of manufacturing a contact member
GB2215661B (en) * 1988-02-15 1992-10-28 Shinetsu Polymer Co Hot-melt adhesive interconnector and method for the preparation thereof
US5190674A (en) * 1990-04-04 1993-03-02 Monks James H Method and apparatus for controlling the flow of molten metals
US5346401A (en) * 1993-04-22 1994-09-13 Motorola, Inc. Electrical connector for translating between first and second sets of terminals having different pitches
US7922096B2 (en) 2000-08-10 2011-04-12 Novo Nordisk A/S Support for a cartridge for transferring an electronically readable item of information from the cartridge to an electronic circuit
US6994261B2 (en) 2000-08-10 2006-02-07 Novo Nirdisk A/S Support for a cartridge for transferring an electronically readable item of information from the cartridge to an electronic circuit
US6669090B2 (en) 2000-08-10 2003-12-30 Novo Nordick A/S Electronic marking of a medication cartridge
US7264482B2 (en) 2004-03-10 2007-09-04 J.S.T. Mfg. Co., Ltd. Anisotropic conductive sheet
US8197449B2 (en) 2005-05-10 2012-06-12 Novo Nordisk A/S Injection device comprising an optical sensor
US8771238B2 (en) 2005-05-10 2014-07-08 Novo Nordisk A/S Injection device comprising an optical sensor
US9522238B2 (en) 2005-05-10 2016-12-20 Novo Nordisk A/S Injection device comprising an optical sensor
US8638108B2 (en) 2005-09-22 2014-01-28 Novo Nordisk A/S Device and method for contact free absolute position determination
US8608079B2 (en) 2006-03-20 2013-12-17 Novo Nordisk A/S Contact free reading of cartridge identification codes
US8994382B2 (en) 2006-04-12 2015-03-31 Novo Nordisk A/S Absolute position determination of movably mounted member in medication delivery device
US8049519B2 (en) 2006-04-26 2011-11-01 Novo Nordisk A/S Contact free absolute position determination of a moving element in a medication delivery device
US8348904B2 (en) 2007-03-21 2013-01-08 Novo Nordisk A/S Medical delivery system having container recognition and container for use with the medical delivery system
US9950117B2 (en) 2009-02-13 2018-04-24 Novo Nordisk A/S Medical device and cartridge

Also Published As

Publication number Publication date
GB8407276D0 (en) 1984-04-26
GB8505736D0 (en) 1985-04-11
JPS60212980A (en) 1985-10-25

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)