US3881796A - Terminal for flat conductor - Google Patents

Terminal for flat conductor Download PDF

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Publication number
US3881796A
US3881796A US454108A US45410874A US3881796A US 3881796 A US3881796 A US 3881796A US 454108 A US454108 A US 454108A US 45410874 A US45410874 A US 45410874A US 3881796 A US3881796 A US 3881796A
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US
United States
Prior art keywords
jaws
projections
jaw
conductor
terminal
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.)
Expired - Lifetime
Application number
US454108A
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English (en)
Inventor
Laurie A Saunders
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
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 Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Application granted granted Critical
Publication of US3881796A publication Critical patent/US3881796A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

  • the terminal includes a pair of jaws each formed with spaced projections having convex outer surfaces, with concave surfaces formed between the projections.
  • the projections on the two jaws are altrivately disposed so that when the jaws are clamped together, with a flat electrical conductor disposed therebetween, the convex and concave surfaces are brought into mating relationship so that the insulation on the conductor is defomed to allow electrical contact between the jaws and the conductor.
  • the present invention has special utility in the termination of the conductor ribbons of flat electrical cables commonly known as strip cables, although it may be utilized for individual flat electrical conductors as well as flexible circuitry.
  • the invention is also applicable to joining of a pair of flat cables together.
  • the purpose of the present invention is to provide means for terminating conductor elements of flexible flat cable or flexible circuitry with contacts appropriate to a wide range of requirements for connecting the cable or circuit to components or other circuits, or alternatively to directly join two flat cables together or flat cables to suitably prepared circuits.
  • the termination arrangement of the present invention does not require that the cable or circuit insulation be stripped prior to assembly, and the conductors are not completely pierced during crimping of the termination device to the conductors.
  • a terminal for a flat electrical conductor having insulation on the opposed surfaces thereof.
  • the terminal comprises a pair of jaws which are adapted to receive the flat conductor therebetween. Projections are formed on each jaw facing in the direction of, but alternately disposed with respect to, projections on the other jaw.
  • the projections have convex outer surfaces.
  • the spaces between the projections on each jaw define concave surfaces. The spaces are dimensioned so as to be able to receive the projections so that when the jaws are clamped together the convex and concave surfaces are brought into mating relationship.
  • the insulation covering of a flat electrical conductor disposed between the jaws is deformed during the crimping operation to allow electrical contact between the jaws and the conductor without completely piercing the conductor as results from the use of pointed teeth on jaws as in prior art termination devices.
  • FIG. 1 is a perspective view of a one-piece crimp element for terminating a flat cable or like insulated conductor, shown prior to assembly or crimping to the conductor;
  • FIG. la is a transverse sectional view through the insulated conductor illustrated in FIG. 1;
  • FIG. 2 is a perspective view of a two-piece crimp element for terminating a flat cable or similar conductor, shown prior to assembly or crimping to the conductor;
  • FIG. 3 shows an element as shown in FIG. 2, but assembled to trap a flat conductor
  • FIG. 4 shows the lower portion of an element similar to FIG. 2, but with serrations intended in some cases to enhance the insulation-piercing and electrical characteristics of the element;
  • FIG. 5 shows an element similar to FIG. 2, but incorporating corrugations perpendicular to the major axes of the two jaws;
  • FIG. 6 is a perspective view of a jointing device for a pair of flat cables in accordance with the present invention.
  • FIG. 6a is an enlarged transverse sectional view taken through the flat cable illustrated in FIG. 6;
  • FIG. 7 shows a typical application of one of the crimp elements in an insulating housing, thus constituting a connecting or terminal block for a flat cable;
  • FIG. 8 shows an alternative application of a crimp element in a pluggable connection device using, in this case, male and female contact elements
  • FIG. 9 shows a crimp element incorporating an external'insulating coating.
  • FIG. 1 there is shown on embodiment of the crimp element or tenninal of the present invention, generally designated 10.
  • the crimp element is one piece and includes a forward body 12 and a pair of rearwardly extending jaws l4 and 16.
  • the crimp element may be formed by stamping or etching a brass sheet for example, of suitable thickness.
  • the jaws l4 and 16 are spaced apart to define a slot 18 which has a bent down portion 20 in the forward body 12.
  • Each jaw 14 and 16 is provided with a plurality of longitudinally spaced projections 30, with the projections on one jaw being alternately disposed with respect to the projections on the other jaw.
  • the projections are formed with convex surfaces 32.
  • the spaces on each jaw between the projections define concave surfaces 34 which are dimensioned so as to be able to tightly receive the projections on the other jaw.
  • each concave surface on the jaws has the general configuration of a half-ellipse with the major axis of the ellipse extending longitudinally of the jaws while the convex surfaces on the projections are semi-circular.
  • the projections are perforated, as indicated at 35 in FIG. I, so that the projections may deform.
  • the entire crimp element 10 is produced as a single stamping from a metal sheet.
  • the parallel crimping operation may cause the shorter jaw 16 to be sheared at its original point of contact with the forward body 12, indicated at 36.
  • the jaws 14 and 16 may be produced separately, as seen in FIG. 2, with one jaw formed of metal and the other of a suitable grade of plastic.
  • the lower jaw is formed with an extension 37, which may take the form of a solder or wire-wrap tail as shown, or a male pin element or female socket element, and is metal.
  • FIG. 3 shows two separate jaws crimped together with conductor 22 sandwiched therebetween.
  • serrations 38 may be formed on the projections 30 and concave surfaces 34 on one or both jaws to enhance electrical contact and mechanical locking obtained during crimping.
  • FIG. shows jaws 14, 16 essentially similar to those of FIG. 2, except that corrugations 39 have been provided in the jaws, which enhance the stability of the jaws during and after crimping. Such corrugations may be supplemented by serrations such as shown in FIG. 4, where appropriate. Corrugations may be of greater or smaller pitch relative to the length of the jaws and may have greater or smaller amplitude, as desired.
  • FIG. 6 illustrates a cable joint, generally designated 40, incorporating the crimping jaws of the present invention.
  • the joint includes a pair of insulator housings 42 and 44.
  • a pair of flat cables 46 and 48 have their ends overlapping in the region between the housings.
  • Crimp jaws l4 and 16 are fixedly mounted on the opposing walls of the housings 44 and 42, respectively.
  • the crimp jaws may be individual plastic or metal segments as illustrated in FIG. 1 positioned in parallel relationship, or may be wider and extend laterally across the housings 42 and 44 transverse of the cables if formed of insulator material.
  • FIG. 7 shows an assembly similar to that illustrated in FIG. 6 for terminating a single flat cable 46.
  • the jaws l4, 16 may be assembled into the housings 42, 44 before crimping, or may be assembled into the housings after crimping. In the former case the crimp is effected through the material of the housings, which is generally a thermoplastic or thermosetting plastic material.
  • Extensions 37 of one or both of the jaws provide various forms of terminations. That indicated, for example, provides either a direct solder termination to a printed circuit board 54 or a termination onto which wires may be attached. Where appropriate these extensions may be bent before or after assembly in the insulating housings as indicated at 56.
  • FIG. 8 illustrates an assembly similar to that shown in FIG. 7 except that the housings 42, 44 are shaped to provide a female receptacle 58.
  • the extension 37 of each lower jaw 16 provides a male pin contact. This makes direct contact to a female socket contact 60, in a second male insulating housing 62.
  • Alternative forms of male and female socket contacts may be used.
  • a pluggable, demountable electrical connector is provided. Complete flexibility is provided since any variety of contact type is possible including male or female contacts with wire wrap terminals, printed circuit direct solder terminals, etc.
  • the crimp applied to the jaws may be effected either prior to installation of the jaws in the insulating housings, or the crimp may be effected through these housings, the jaws having first been assembled into the appropriate housing section.
  • FIG. 9 shows a typical pair of metal jaws 14, 16 in which the areas 64 and 66 have had applied to their external surfaces an insulating coating. Note that this insulating coating is not applied to the extension or contact area 37. The purpose of this insulating coating is to provide insulation in those applications where no molding insulating housing is provided. When the crimping is effected, these insulating coatings are sufficiently disturbed to ensure that a proper electrical contact is effected with the cable.
  • the various elements described herein serve to provide a means of terminating conductor elements of flexible flat cable or flexible circuitry with contacts appropriate to a wide range of requirements for connecting the cable or circuit to components or other circuits; alternatively to directly join two flat cables or suitable prepared circuits. All of the devices described herein are constructed such that conductors need not be pierced prior to crimping and cable/circuit insulation need not be stripped prior to assembly. These crimp elements will, nevertheless, also operate if such insulation is stripped prior to assembly.
  • a terminal for a flat electrical conductor which may have insulation on the opposed surfaces thereof comprising:
  • said means comprising longitudinally spaced projections on each said jaw extending toward the other jaw, the projections on one jaw being alternately disposed with respect to the projections on the other jaw, said projections having curved convex outer surfaces;
  • each said projection being fonned with an aperture whereby said projection may deform when said jaws are clamped together.
  • each said convex surface is semi-circular and each said concave surface has the general configuration of a half-ellipse, with the major axis of the ellipse extending longitudinally of said jaws.
  • said jaws are spaced apart in parallel relationship to define a slot therebetween and are integrally joined at one end to a forward body.
  • said projections on each jaw cooperate with the concave surfaces on the other jaw to produce a mechanical joint between said jaws when said conductor is sandwiched therebetween.
  • a terminal as set forth in claim 1 including:
  • one of said jaws embodies an integral electrical contact element.
  • each said metal jaw has an insulating material coating thereon which is ruptured when said jaws are clamped together onto said conductor.
  • a terminal for a flat electrical conductor which may have insulation on the opposed surfaces thereof comprising:
  • said means comprising longitudinally spaced projections on each said jaw extending toward the other jaw, the projections on one jaw being alternately disposed with respect to the projections on the other jaw, said projections having curved convex outer surfaces;
  • one of said jaws being of an insulating material while the other of said jaws is of metal.
  • a terminal for a flat electrical conductor which may have insulation on the opposed surfaces thereof comprising:
  • said means comprising longitudinally spaced projections on each said jaw extending toward the other jaw, the projections on one jaw being alternately disposed with respect to the projections on the other jaw, said projections having curved convex outer surfaces;
  • At least one of said projections, and/or at least one of said concave surfaces being provided with serrations which facilitate the rupturing of the insulation on said conductor when said jaws are clamped together.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US454108A 1973-03-23 1974-03-25 Terminal for flat conductor Expired - Lifetime US3881796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1407773A GB1425477A (en) 1973-03-23 1973-03-23 Connectors

Publications (1)

Publication Number Publication Date
US3881796A true US3881796A (en) 1975-05-06

Family

ID=10034575

Family Applications (1)

Application Number Title Priority Date Filing Date
US454108A Expired - Lifetime US3881796A (en) 1973-03-23 1974-03-25 Terminal for flat conductor

Country Status (8)

Country Link
US (1) US3881796A (enrdf_load_stackoverflow)
JP (1) JPS5310275B2 (enrdf_load_stackoverflow)
DE (1) DE2413174C3 (enrdf_load_stackoverflow)
FR (1) FR2222771B1 (enrdf_load_stackoverflow)
GB (1) GB1425477A (enrdf_load_stackoverflow)
IE (1) IE39346B1 (enrdf_load_stackoverflow)
IT (1) IT1007774B (enrdf_load_stackoverflow)
NL (1) NL7403805A (enrdf_load_stackoverflow)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241498A (en) * 1979-02-05 1980-12-30 Akzona Incorporated Device and method for terminating a flat cable
US4461527A (en) * 1981-12-29 1984-07-24 Thomas & Betts Corporation Insulation displacing terminal
US4859204A (en) * 1988-05-13 1989-08-22 Amp Incorporated Method of staking a wave crimp for flat power cable termination
US4867700A (en) * 1987-05-14 1989-09-19 Amp Incorporated Wave crimp for flat power cable termination
US4900264A (en) * 1989-04-21 1990-02-13 Amp Incorporated Electrical connector and method of interconnecting flat power cables
US4902245A (en) * 1989-04-21 1990-02-20 Amp Incorporated Methods and apparatus for terminating and interconnecting flat power cables
US4915650A (en) * 1988-05-13 1990-04-10 Amp Incorporated Electrical terminals and method for terminating flat power cable
US4938713A (en) * 1987-05-14 1990-07-03 Amp Incorporated Electrical terminal for wave crimp termination of flat power cable
US4950180A (en) * 1988-05-13 1990-08-21 Amp Incorporated Electrical termination and method of terminating flat power cable
US5137468A (en) * 1990-05-09 1992-08-11 Sumitomo Wiring Systems, Ltd. Electrical connector for flexible plane-type conductor cable
US5417581A (en) * 1993-09-18 1995-05-23 Molex Incorporated Flat insulation displacement terminal for electrical connectors
US5643007A (en) * 1996-09-13 1997-07-01 Abb Power T&D Company Inc. Transformer tap connector
US6422896B2 (en) * 2000-02-25 2002-07-23 Yazaki Corporation Flat circuit member connector
US20040185699A1 (en) * 2003-03-19 2004-09-23 Shan-Yen Yang Connection device
US20060148309A1 (en) * 2005-01-06 2006-07-06 Fujitsu Component Limited Connector
US20080146050A1 (en) * 2006-12-15 2008-06-19 Ted Ju Electrical Connector
CN103633453A (zh) * 2012-08-27 2014-03-12 矢崎总业株式会社 导体连接结构
US9243863B1 (en) * 2013-01-04 2016-01-26 Truglo, Inc. Wrist strap connector for archery bowstring release
US20160285176A1 (en) * 2015-03-23 2016-09-29 Hubbell Incorporated Connectors for flexible busbar and methods of connecting
US10868380B1 (en) 2019-07-19 2020-12-15 Japan Aviation Electronics Industry, Limited Connector adapted to be connected to flexible conductor
CN112242622A (zh) * 2019-07-19 2021-01-19 日本航空电子工业株式会社 连接器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57547Y2 (enrdf_load_stackoverflow) * 1976-12-31 1982-01-06
DE8210809U1 (de) * 1982-04-16 1982-08-05 Anton Steinecker Maschinenfabrik Gmbh, 8050 Freising Rohrbuendel-waermetauscher
JPS6040980U (ja) * 1983-08-29 1985-03-22 スタンレー電気株式会社 ア−スプレ−トと端子の接続構造
US4579413A (en) * 1984-06-29 1986-04-01 Amp Incorporated Connector for the mass termination of small gauge magnet wire
DE19953646B4 (de) 1999-11-08 2005-12-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Steckverbindung für folienisolierte Leiter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129995A (en) * 1960-11-14 1964-04-21 Hi Shear Corp Electrical connector
US3668613A (en) * 1970-01-22 1972-06-06 John J Klosin Electrical connector
US3825881A (en) * 1972-12-29 1974-07-23 Burndy Corp Termination device for flat electrical conductors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201744A (en) * 1961-02-15 1965-08-17 Itt Contact terminal for an electrical conductor member
US3353141A (en) * 1966-03-22 1967-11-14 Donald M Budai Flat cable connector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3129995A (en) * 1960-11-14 1964-04-21 Hi Shear Corp Electrical connector
US3668613A (en) * 1970-01-22 1972-06-06 John J Klosin Electrical connector
US3825881A (en) * 1972-12-29 1974-07-23 Burndy Corp Termination device for flat electrical conductors

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241498A (en) * 1979-02-05 1980-12-30 Akzona Incorporated Device and method for terminating a flat cable
US4461527A (en) * 1981-12-29 1984-07-24 Thomas & Betts Corporation Insulation displacing terminal
US4938713A (en) * 1987-05-14 1990-07-03 Amp Incorporated Electrical terminal for wave crimp termination of flat power cable
US4867700A (en) * 1987-05-14 1989-09-19 Amp Incorporated Wave crimp for flat power cable termination
US4915650A (en) * 1988-05-13 1990-04-10 Amp Incorporated Electrical terminals and method for terminating flat power cable
US4859204A (en) * 1988-05-13 1989-08-22 Amp Incorporated Method of staking a wave crimp for flat power cable termination
US4950180A (en) * 1988-05-13 1990-08-21 Amp Incorporated Electrical termination and method of terminating flat power cable
US4902245A (en) * 1989-04-21 1990-02-20 Amp Incorporated Methods and apparatus for terminating and interconnecting flat power cables
US4900264A (en) * 1989-04-21 1990-02-13 Amp Incorporated Electrical connector and method of interconnecting flat power cables
US5137468A (en) * 1990-05-09 1992-08-11 Sumitomo Wiring Systems, Ltd. Electrical connector for flexible plane-type conductor cable
US5417581A (en) * 1993-09-18 1995-05-23 Molex Incorporated Flat insulation displacement terminal for electrical connectors
US5643007A (en) * 1996-09-13 1997-07-01 Abb Power T&D Company Inc. Transformer tap connector
US6422896B2 (en) * 2000-02-25 2002-07-23 Yazaki Corporation Flat circuit member connector
US6991489B2 (en) * 2003-03-19 2006-01-31 Benq Corporation Connection device
US20040185699A1 (en) * 2003-03-19 2004-09-23 Shan-Yen Yang Connection device
US20060148309A1 (en) * 2005-01-06 2006-07-06 Fujitsu Component Limited Connector
US7351093B2 (en) * 2005-01-06 2008-04-01 Fujitsu Component Limited Connector
US20080146050A1 (en) * 2006-12-15 2008-06-19 Ted Ju Electrical Connector
CN103633453A (zh) * 2012-08-27 2014-03-12 矢崎总业株式会社 导体连接结构
CN103633453B (zh) * 2012-08-27 2016-01-20 矢崎总业株式会社 导体连接结构
US9243863B1 (en) * 2013-01-04 2016-01-26 Truglo, Inc. Wrist strap connector for archery bowstring release
US20160285176A1 (en) * 2015-03-23 2016-09-29 Hubbell Incorporated Connectors for flexible busbar and methods of connecting
US10361491B2 (en) * 2015-03-23 2019-07-23 Hubbell Incorporated Connectors for flexible busbar and methods of connecting
US10886636B2 (en) 2015-03-23 2021-01-05 Hubbell Incorporated Connectors for flexible busbar and methods of connecting
US11611158B2 (en) 2015-03-23 2023-03-21 Hubbell Incorporated Connectors for flexible busbar and methods of connecting
US10868380B1 (en) 2019-07-19 2020-12-15 Japan Aviation Electronics Industry, Limited Connector adapted to be connected to flexible conductor
CN112242622A (zh) * 2019-07-19 2021-01-19 日本航空电子工业株式会社 连接器
EP3767754A1 (en) * 2019-07-19 2021-01-20 Japan Aviation Electronics Industry, Ltd. Connector
CN112242622B (zh) * 2019-07-19 2022-02-11 日本航空电子工业株式会社 连接器

Also Published As

Publication number Publication date
GB1425477A (en) 1976-02-18
FR2222771A1 (enrdf_load_stackoverflow) 1974-10-18
NL7403805A (enrdf_load_stackoverflow) 1974-09-25
IE39346L (en) 1974-09-23
DE2413174A1 (de) 1974-09-26
AU6668774A (en) 1975-09-18
FR2222771B1 (enrdf_load_stackoverflow) 1977-09-30
DE2413174B2 (de) 1978-06-08
JPS5310275B2 (enrdf_load_stackoverflow) 1978-04-12
IT1007774B (it) 1976-10-30
DE2413174C3 (de) 1979-02-08
JPS5035691A (enrdf_load_stackoverflow) 1975-04-04
IE39346B1 (en) 1978-09-27

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