US3880488A - Electrical connector to connect to flat flexible cable - Google Patents

Electrical connector to connect to flat flexible cable Download PDF

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Publication number
US3880488A
US3880488A US417677A US41767773A US3880488A US 3880488 A US3880488 A US 3880488A US 417677 A US417677 A US 417677A US 41767773 A US41767773 A US 41767773A US 3880488 A US3880488 A US 3880488A
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United States
Prior art keywords
base
platform
layer
aperture
flat
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Expired - Lifetime
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US417677A
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John Covell Collier
David William Rickards
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TE Connectivity Corp
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AMP Inc
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    • 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
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H01R12/67—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals
    • H01R12/68—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals comprising deformable portions

Definitions

  • ABSTRACT An electrical connector made from sheet material which includes a portion for connection to a flat conductor of a flat flexible cable.
  • the connection portion includes a base and a platform spaced from but overlying the base.
  • the platform has a lance so that on crimping the connecting portion to a flat flexible cable operatively positioned between the platform and the base, the lance pierces the cable and operatively engages a flat conductor.
  • the present invention relates to an electrical contact for connection to a flat conductor of a flat. flexible cable.
  • flat flexible cable is intended to include flexible cable in which a plurality of spaced. flat conductors are embedded in or supported on an insulating material or flexible etched circuitry in which flat conductors are supported on a flexible substrate.
  • the flat conductors of flat flexible cable can. in many applications. have a thickness of only 0.0015 inches and although many electrical contacts have been proposed for crimped connection to such flat conductors. difficulties have arisen in producing a crimped connection which consistently gives the required electrical and mechanical properties. Further, when thin flat conductors are being used. frequently the spacing between the conductors is extremely small and any contact for crimped connection to such a conductor must. as a consequence. also be narrow to prevent accidental en gagement of adjacent contacts.
  • an electrical contact made from a sheet metal blank comprises a portion for connection to a flat conductor of a flat. flexible cable.
  • the connection portion including a base of double thickness a first layer of the base having a through aperture in alignment with an embossment formed in the second layer of the base. the embossment presenting a concave surface towards the aperture. and a platform spaced from but overlying the first layer. the platform having a lance in alignment with the aperture so that on crimping the connecting portion to a flat.
  • flexible cable operatively positioned between the platform and the base, the lance pierces the cable and passes through the aperture to engage the concave surface of the embossment which deflects the lance laterally and inhibits withdrawal of the lance through the apertures.
  • the base of double thickness is formed by folding the connection portion along a line extending from a front end to an opposite rear end of the connection portion the first and second layers being of generally equal width.
  • the platform may be of the same width as the layers and joined to the front end of the first layer.
  • the contact portion which may be of any known configuration. is preferably joined to the front end of the second layer and is of the same width as the second layer so thatthe overall width of the electrical contact is generally equal to the width of the base.
  • Two spaced lances may be provided on the platform each of which is in alignment with an aperture in the first layer.
  • the embossment being elongate and extending to cover the spaced apertures.
  • FIG. 1 is a side view of an electrical contact
  • FIG. 2 is a plan view of a sheet metal blank from which the electrical contact of FIG. 1 is formed.-
  • an electrical contact I is made from a sheet metal blank 2 of electrically conductive material.
  • the contact 1 includes a portion 3 for connection to a flat conductor of a flat, flexible cable (not shown) and a contact portion 4 for electrical engagement with a mating electrical contact.
  • connection portion 3 includes a base 5 of double thickness formed by folding the portion 3 along a median fold line 11-12 as seen in FIG. 2, so that apertures 6 in a first layer 7 of the base 5 are in alignment with an embossment 8 in the second layer 9 of the base 5.
  • the embossment 8 presents a concave surface 10 towards the apertures 6.
  • a platform 20 is joined to the front end of the first layer 7 and is folded to overlie the first layer 7. As can be seen from FIG. 2, platform 20 is folded along a line cd after the fold line 11-11 is severed along the length tl('. A small hole 24 is formed at the position 0 to simplify the severing and folding operations.
  • Lances 22 are formed from the platform 20 and extend towards and are in alignment with the apertures 6.
  • the contact portion 4 which can be of any configuration is the same width as the connecting portion 3.
  • the end of a flat flexible cable (not shown) is inserted between the platform 20 and base 5 of the connecting portion 3 so that a flat conductor is in alignment with the platform and the base.
  • the connecting portion 3 is then crimped to the cable so that the lances 22 pierce the cable insulation and the flat conductor and pass through their respective apertures 6 to engage the concave surface 10 of the embossment 8.
  • the surface 10 causes the lances to be deflected laterally thereby inhibiting withdrawal of the lances through their respective apertures 6 should any relaxation of the crimp take place.
  • One advantage of the electrical contact of the above described embodiment is that a good electrical and mechanical contact is made with a flat conductor of a flat. flexible cable with a crimp which is easy to apply. The deflection and consequent locking of the lances minimizes the possibility of the contact deteriorating with the passage of time and the subsequent relaxing of the crimp.
  • a further advantage of the electrical contact of the above described embodiment. is that the contact is suitable for crimped connection to flat conductors arranged at close pitch distances along a cable since the contact portion and the connection portion are of the same width.
  • a still further advantage of the electrical contact of the above described embodiment. is that a plurality of electrical contacts can be preloaded without difficulty. in passageways in an insulating housing. each passageway having an opening for permitting entry of a die for applying a crimping pressure to the platform 20 on the insertion of a flat flexible cable between the platform 20 and the base 5. This facilitates the assembly of electrical harnesses which include flat flexible cable and their corresponding connectors.
  • An electrical contact made from a sheet metal blank comprising a portion for connection to a flat conductor of a flat. flexible cable.
  • the connection portion including a base of double thickness, a first layer of the base having a through aperture in alignment with an embossment formed in the second layer of the base.
  • the embossment presenting a concave surface towards the aperture and a platform spaced from but overlying the first layer, the platform having a lance in alignment with the aperture.
  • the lance pierces the cable and passes through the aperture to engage the concave surface of the embossment which deflexes the lance laterally and inhibits withdrawal of the lance through the aperture.
  • connection portion in which the base of double thickness is formed by folding the connection portion along a line extending from a front end to an opposite rear end of the connection portion.
  • first and second layers being of generally equal width.

Abstract

An electrical connector made from sheet material which includes a portion for connection to a flat conductor of a flat flexible cable. The connection portion includes a base and a platform spaced from but overlying the base. The platform has a lance so that on crimping the connecting portion to a flat flexible cable operatively positioned between the platform and the base, the lance pierces the cable and operatively engages a flat conductor.

Description

United States Patent Collier et al.
[451 Apr. 29, 1975 ELECTRICAL CONNECTOR TO CONNECT TO FLAT FLEXIBLE CABLE [75] Inventors: John Covell Collier, Farnworth;
David William Rickards, Stanmore, both of England [73] Assignee: AMP Incorporated, Harrisburg, Pa.
[22] Filed: Nov. 20, '1973 [21] Appl. N0.: 417,677
[30] Foreign Application Priority Data Nov. 29. 1972 United Kingdom 55028/72 [52] U.S. Cl. 339/97 C; 174/84 C; 339/276 T [51] H01r 11/20 [58] Field of Search 339/17 F, 95, 97-99, 339/176 MP, 276; 174/84 C [56] References Cited UNITED STATES PATENTS -1138.658 6/1964 Wcimcr Jr. 174/84 C FOREIGN PATENTS OR APPLICATIONS 572.627 ll/l958 Belgium 339/97 C Primary Examiner-Joseph H. McGlynn Altorney. Agenl, 0r Firm-William J. Keating; Jay L. Seitchik; Frederick W. Rating [57] ABSTRACT An electrical connector made from sheet material which includes a portion for connection to a flat conductor of a flat flexible cable. The connection portion includes a base and a platform spaced from but overlying the base. The platform has a lance so that on crimping the connecting portion to a flat flexible cable operatively positioned between the platform and the base, the lance pierces the cable and operatively engages a flat conductor.
5 Claims, 2 Drawing Figures ELECTRICAL CONNECTOR TO CONNECT TO FLAT FLEXIBLE CAlBLE The present invention relates to an electrical contact for connection to a flat conductor of a flat. flexible cable.
The expression flat flexible cable is intended to include flexible cable in which a plurality of spaced. flat conductors are embedded in or supported on an insulating material or flexible etched circuitry in which flat conductors are supported on a flexible substrate.
The flat conductors of flat flexible cable can. in many applications. have a thickness of only 0.0015 inches and although many electrical contacts have been proposed for crimped connection to such flat conductors. difficulties have arisen in producing a crimped connection which consistently gives the required electrical and mechanical properties. Further, when thin flat conductors are being used. frequently the spacing between the conductors is extremely small and any contact for crimped connection to such a conductor must. as a consequence. also be narrow to prevent accidental en gagement of adjacent contacts.
According to the present invention, an electrical contact made from a sheet metal blank comprises a portion for connection to a flat conductor of a flat. flexible cable. the connection portion including a base of double thickness a first layer of the base having a through aperture in alignment with an embossment formed in the second layer of the base. the embossment presenting a concave surface towards the aperture. and a platform spaced from but overlying the first layer. the platform having a lance in alignment with the aperture so that on crimping the connecting portion to a flat. flexible cable operatively positioned between the platform and the base, the lance pierces the cable and passes through the aperture to engage the concave surface of the embossment which deflects the lance laterally and inhibits withdrawal of the lance through the apertures.
In a preferred embodiment. the base of double thickness is formed by folding the connection portion along a line extending from a front end to an opposite rear end of the connection portion the first and second layers being of generally equal width.
The platform may be of the same width as the layers and joined to the front end of the first layer.
The contact portion. which may be of any known configuration. is preferably joined to the front end of the second layer and is of the same width as the second layer so thatthe overall width of the electrical contact is generally equal to the width of the base.
Two spaced lances may be provided on the platform each of which is in alignment with an aperture in the first layer. the embossment being elongate and extending to cover the spaced apertures.
An embodiment of the invention will now be described. by way of example, reference being made to the Figures of the accompanying diagrammatic drawings in which:
FIG. 1 is a side view of an electrical contact; and
FIG. 2 is a plan view of a sheet metal blank from which the electrical contact of FIG. 1 is formed.-
As shown, an electrical contact I is made from a sheet metal blank 2 of electrically conductive material. The contact 1 includes a portion 3 for connection to a flat conductor of a flat, flexible cable (not shown) and a contact portion 4 for electrical engagement with a mating electrical contact.
The connection portion 3 includes a base 5 of double thickness formed by folding the portion 3 along a median fold line 11-12 as seen in FIG. 2, so that apertures 6 in a first layer 7 of the base 5 are in alignment with an embossment 8 in the second layer 9 of the base 5. The embossment 8 presents a concave surface 10 towards the apertures 6.
A platform 20 is joined to the front end of the first layer 7 and is folded to overlie the first layer 7. As can be seen from FIG. 2, platform 20 is folded along a line cd after the fold line 11-11 is severed along the length tl('. A small hole 24 is formed at the position 0 to simplify the severing and folding operations.
Lances 22 are formed from the platform 20 and extend towards and are in alignment with the apertures 6.
The contact portion 4 which can be of any configuration is the same width as the connecting portion 3.
In operation. the end of a flat flexible cable (not shown) is inserted between the platform 20 and base 5 of the connecting portion 3 so that a flat conductor is in alignment with the platform and the base. The connecting portion 3 is then crimped to the cable so that the lances 22 pierce the cable insulation and the flat conductor and pass through their respective apertures 6 to engage the concave surface 10 of the embossment 8. The surface 10 causes the lances to be deflected laterally thereby inhibiting withdrawal of the lances through their respective apertures 6 should any relaxation of the crimp take place.
One advantage of the electrical contact of the above described embodiment. is that a good electrical and mechanical contact is made with a flat conductor of a flat. flexible cable with a crimp which is easy to apply. The deflection and consequent locking of the lances minimizes the possibility of the contact deteriorating with the passage of time and the subsequent relaxing of the crimp.
A further advantage of the electrical contact of the above described embodiment. is that the contact is suitable for crimped connection to flat conductors arranged at close pitch distances along a cable since the contact portion and the connection portion are of the same width.
A still further advantage of the electrical contact of the above described embodiment. is that a plurality of electrical contacts can be preloaded without difficulty. in passageways in an insulating housing. each passageway having an opening for permitting entry of a die for applying a crimping pressure to the platform 20 on the insertion of a flat flexible cable between the platform 20 and the base 5. This facilitates the assembly of electrical harnesses which include flat flexible cable and their corresponding connectors.
What is claimed is:
1. An electrical contact made from a sheet metal blank comprising a portion for connection to a flat conductor of a flat. flexible cable. the connection portion including a base of double thickness, a first layer of the base having a through aperture in alignment with an embossment formed in the second layer of the base. the embossment presenting a concave surface towards the aperture and a platform spaced from but overlying the first layer, the platform having a lance in alignment with the aperture. so that on crimping the connection portion to a flat, flexible cable operatively positioned between the platform and the base, the lance pierces the cable and passes through the aperture to engage the concave surface of the embossment which deflexes the lance laterally and inhibits withdrawal of the lance through the aperture.
2. An electrical contact as claimed in claim 1, in which the base of double thickness is formed by folding the connection portion along a line extending from a front end to an opposite rear end of the connection portion. the first and second layers being of generally equal width.
3. An electrical contact as claimed in claim 1, in
extending to cover the spaced apertures.
l l l

Claims (5)

1. An electrical contact made from a sheet metal blank comprising a portion for connection to a flat conductor of a flat, flexible cable, the connection portion including a base of double thickness, a first layer of the base having a through aperture in alignment with an embossment formed in the second layer of the base, the embossment presenting a concave surface towards the aperture and a platform spaced from but overlying the first layer, the platform having a lance in alignment with the aperture, so that on crimping the connection portion to a flat, flexible cable operatively positioned between the platform and the base, the lance pierces the cable and passes through the aperture to engage the concave surface of the embossment which deflexes the lance laterally and inhibits withdrawal of the lance through the aperturE.
2. An electrical contact as claimed in claim 1, in which the base of double thickness is formed by folding the connection portion along a line extending from a front end to an opposite rear end of the connection portion, the first and second layers being of generally equal width.
3. An electrical contact as claimed in claim 1, in which the platform is of the same width as the layers and is joined to the front end of the first layer.
4. An electrical contact as claimed in claim 1, in which the contact portion is joined to the front end of the second layer and is of the same width as the second layer.
5. An electrical contact as claimed in claim 1, in which two spaced lances are provided on the platform, each of which lances is in alignment with an aperture in the first layer, the embossment being elongate and extending to cover the spaced apertures.
US417677A 1972-11-29 1973-11-20 Electrical connector to connect to flat flexible cable Expired - Lifetime US3880488A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5502872A GB1396899A (en) 1972-11-29 1972-11-29 Electrical contacts for flat flexible cable

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US3880488A true US3880488A (en) 1975-04-29

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US417677A Expired - Lifetime US3880488A (en) 1972-11-29 1973-11-20 Electrical connector to connect to flat flexible cable

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US (1) US3880488A (en)
JP (1) JPS4983890A (en)
AR (1) AR199423A1 (en)
AT (1) AT330875B (en)
BE (1) BE807873A (en)
BR (1) BR7309224D0 (en)
CA (1) CA988596A (en)
DE (1) DE2357900A1 (en)
ES (1) ES197836Y (en)
FR (1) FR2208207B1 (en)
GB (1) GB1396899A (en)
IT (1) IT1001728B (en)
NL (1) NL7316132A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997233A (en) * 1976-02-19 1976-12-14 E. I. Du Pont De Nemours And Company Flat conductor cable connector
US4212511A (en) * 1978-11-13 1980-07-15 Amp Incorporated Electrical connections for conductors in thin substrates
US4248493A (en) * 1979-05-25 1981-02-03 Thomas & Betts Corporation Self-locking clamp member
US4262983A (en) * 1979-02-08 1981-04-21 Virginia Plastics Company Circuit board connector for insulated wire
US4413872A (en) * 1981-05-11 1983-11-08 Amp Incorporated Preloaded electrical connector
US4492815A (en) * 1983-08-23 1985-01-08 Cooper Industries, Inc. Shielded jacketed flat cable and grounding clip for use therewith
US4558915A (en) * 1980-02-21 1985-12-17 Thomas & Betts Corporation Electrical connector
US5643007A (en) * 1996-09-13 1997-07-01 Abb Power T&D Company Inc. Transformer tap connector
US7160119B2 (en) 1999-08-02 2007-01-09 Gryphics, Inc. Controlled compliance fine pitch electrical interconnect
US20070270021A1 (en) * 2006-05-16 2007-11-22 Fci Americas Technology, Inc. Electrical contact with stapled connection
FR3088609A1 (en) * 2018-11-16 2020-05-22 Compagnie Plastic Omnium BODY PIECE ELEMENT HAVING A HEATING FILM
US20220337001A1 (en) * 2021-04-16 2022-10-20 TE Connectivity Services Gmbh Spring clip and connector for a flat flexible cable

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10123688A1 (en) * 2001-05-16 2002-12-05 Taller Automotive Gmbh Flex foil contact arrangement e.g. for automobile applications, has flex foil contact area at distance from chamber on cantilever arm in one piece with contact element
DE20217460U1 (en) * 2002-11-11 2004-03-25 Ghw Grote & Hartmann Gmbh Electrical contact element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138658A (en) * 1961-09-27 1964-06-23 Amp Inc Electrical connector for very thin sheet metal member

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3058088A (en) * 1959-10-22 1962-10-09 Minnesota Mining & Mfg Connector
GB1268770A (en) * 1968-11-21 1972-03-29 Kenneth Grundy Electrical connector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138658A (en) * 1961-09-27 1964-06-23 Amp Inc Electrical connector for very thin sheet metal member

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997233A (en) * 1976-02-19 1976-12-14 E. I. Du Pont De Nemours And Company Flat conductor cable connector
DE2707093A1 (en) * 1976-02-19 1977-08-25 Du Pont CONNECTION ELEMENT FOR A FLAT CABLE
US4212511A (en) * 1978-11-13 1980-07-15 Amp Incorporated Electrical connections for conductors in thin substrates
US4262983A (en) * 1979-02-08 1981-04-21 Virginia Plastics Company Circuit board connector for insulated wire
US4248493A (en) * 1979-05-25 1981-02-03 Thomas & Betts Corporation Self-locking clamp member
US4558915A (en) * 1980-02-21 1985-12-17 Thomas & Betts Corporation Electrical connector
US4413872A (en) * 1981-05-11 1983-11-08 Amp Incorporated Preloaded electrical connector
US4492815A (en) * 1983-08-23 1985-01-08 Cooper Industries, Inc. Shielded jacketed flat cable and grounding clip for use therewith
US5643007A (en) * 1996-09-13 1997-07-01 Abb Power T&D Company Inc. Transformer tap connector
US7160119B2 (en) 1999-08-02 2007-01-09 Gryphics, Inc. Controlled compliance fine pitch electrical interconnect
US20070270021A1 (en) * 2006-05-16 2007-11-22 Fci Americas Technology, Inc. Electrical contact with stapled connection
US20070270020A1 (en) * 2006-05-16 2007-11-22 Fci Americas Technology, Inc. Electrical contact with stapled connection
US7410384B2 (en) 2006-05-16 2008-08-12 Fci Americas Technology, Inc. Electrical contact with stapled connection
US7422468B2 (en) * 2006-05-16 2008-09-09 Fci Americas Technology, Inc. Electrical contact with stapled connection
FR3088609A1 (en) * 2018-11-16 2020-05-22 Compagnie Plastic Omnium BODY PIECE ELEMENT HAVING A HEATING FILM
WO2020099057A1 (en) * 2018-11-16 2020-05-22 Compagnie Plastic Omnium Vehicle body part element comprising a heating film
US20220337001A1 (en) * 2021-04-16 2022-10-20 TE Connectivity Services Gmbh Spring clip and connector for a flat flexible cable
US11557858B2 (en) * 2021-04-16 2023-01-17 Te Connectivity Solutions Gmbh Spring clip and connector for a flat flexible cable

Also Published As

Publication number Publication date
FR2208207B1 (en) 1977-03-04
DE2357900A1 (en) 1974-05-30
BR7309224D0 (en) 1974-08-29
IT1001728B (en) 1976-04-30
JPS4983890A (en) 1974-08-12
AU6247973A (en) 1975-05-15
ATA988273A (en) 1975-10-15
ES197836Y (en) 1975-10-16
NL7316132A (en) 1974-05-31
GB1396899A (en) 1975-06-11
ES197836U (en) 1975-05-01
AR199423A1 (en) 1974-08-30
CA988596A (en) 1976-05-04
FR2208207A1 (en) 1974-06-21
AT330875B (en) 1976-07-26
BE807873A (en) 1974-05-27

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