US3852517A - Conductive insert for heat recoverable electrical connector - Google Patents

Conductive insert for heat recoverable electrical connector Download PDF

Info

Publication number
US3852517A
US3852517A US00262084A US26208472A US3852517A US 3852517 A US3852517 A US 3852517A US 00262084 A US00262084 A US 00262084A US 26208472 A US26208472 A US 26208472A US 3852517 A US3852517 A US 3852517A
Authority
US
United States
Prior art keywords
insert
conductors
conductor
connector
conductive
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
US00262084A
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English (en)
Inventor
Fava D Del
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.)
Raychem Corp
Original Assignee
Raychem Corp
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 Raychem Corp filed Critical Raychem Corp
Priority to US00262084A priority Critical patent/US3852517A/en
Priority to IL42372A priority patent/IL42372A/en
Priority to AU56333/73A priority patent/AU489947B2/en
Priority to SE7308079A priority patent/SE399337B/xx
Priority to GB2740573A priority patent/GB1407513A/en
Priority to JP48064619A priority patent/JPS4950476A/ja
Priority to CA173,664A priority patent/CA1024627A/en
Priority to ZA733929A priority patent/ZA733929B/xx
Priority to ES415827A priority patent/ES415827A1/es
Priority to IT25248/73A priority patent/IT989092B/it
Priority to FR7321247A priority patent/FR2188330B1/fr
Priority to DE2329908A priority patent/DE2329908A1/de
Priority to CH845273A priority patent/CH572283A5/xx
Priority to BE132182A priority patent/BE800810A/xx
Priority to NLAANVRAGE7308155,A priority patent/NL176119C/xx
Application granted granted Critical
Publication of US3852517A publication Critical patent/US3852517A/en
Priority to CA288,748A priority patent/CA1087265A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/021—Soldered or welded connections between two or more cables or wires
    • H01R4/022—Soldered or welded connections between two or more cables or wires comprising preapplied solder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
    • H01R4/723—Making a soldered electrical connection simultaneously with the heat shrinking

Definitions

  • a conductive insert for placement within a connector capable of forming an electrical and mechanical connection between two or more conductors.
  • the insert is a unitary conductive member which has two open ends. -At least a portion of the inner surface of each end of the insert is coated with a solder alloy.
  • a conductor is inserted in each open end of the connector and in contact with the insert and heat applied to cause the connector to shrink, to melt the solder and to join the conductors to the insert.
  • the connector with the conductive insert is particularly useful for joining a flat conductor to a round conductor and for PATENIELBEE 3M4 3.852.517
  • the field of the invention is electrical connectors capable of forming both an electrical and physical connection between two or more conductors. Such connections are commonly made by soldering the over-' lapped ends of the conductors together or by crimping a connector over the ends of the conductors. In many applications, it is desirable to make a transition from a flat conductor, such as found, for example, in flat'cables, to round conductors. In such cases many of the commonly used connectors have-been found to be unsatisfactory.
  • One method of joining a flat conductor to a round conductor utilizes a crimp connector which is in the shape of a hollow cylinder.
  • the end of the flat conductor is bent into a generally U-shaped configuration
  • an insert is provided which overcomes the disadvantages of the prior art devices. This is accomplished by the use ofan. insert comprising a unitary'conductive metallic member havalong its longitudinal axis so that this end is capable of methods which employ male and female members connected to the respective conductors have. also been used but they mayrequire considerable insertion force which often must be transmitted by the conductors themselves, leading, in many instances, to difficul ty in connection, bent conductors or an unsatisfactory connection.
  • the advantage would be the overall thickness of the terminated device and the ability to play directly from a flat cable with conductors on .100 centers into a wire wrap connector in a printed circuit board with wire wrap pins.
  • the thinness of the connecting device e. g. approximately 0.070 allows stacking on rows of 0.100.
  • the connector After insertion of stripped conductor ends, the connector, containing one or more inserts of the present invention, is heated thus causing the connector to shrink about the conductor and to hold the stripped ends against the inserts. The heat further causes the solder and flux to melt and to electrically connect a pair of conductors to each insert thereby electrically joining the pair of conductors.
  • a particularly useful device results.
  • FIG. 1 is a perspective view of an insert of the present invention together with the stripped ends of two insulated conductors.
  • FIG. 2 is a perspective view of a connector containing an insert of the present invention.
  • FIG. 3 is a perspective view of the connector of FIG. 2 shown. about the ends of two insulated conductors and shown after a heating step and with the plastic sleeve shown in phantom lines.
  • FIG. 4 is a view taken along line 4-4 of FIG. 1.
  • FIG. 5 is a perspective view of an alternate embodiment of the insert of the present invention.
  • FIG. 6 is a view taken along line 6-6 of FIg. 5.
  • FIG. 7 is a cross-sectional viewtakenalong line 7-7 of FIG. 5.
  • FIG. 8 is a perspective. view of a connector containing a plurality of inserts of the present invention.
  • FIG. 9 is a perspective view of an alternate embodi- DESCRIPTION OF THE PREFERRED EMBODIMENTS Turning now to FIG. 1, a unitary conductive metallic member or insert 10 is shown in perspective view.
  • Member 10 has a round oval end 11 and a flattened oval end 12.
  • a round insulated conductor 13 has a stripped end 14' which will fit within the round oval end ofmember 10,
  • a flat insulated conductorjls has a stripped end'lfi which likewise is capable of fitting within the flattened oval end 12.'Preferablythe round ovalend 11 is not closed but rather is left with an opening 11a so that the completed soldered joint may be in-. spected.
  • the flattened oval end 12 is provided with an inspection slot 12a.
  • Each end of unitary conductive metallic member is flared outwardly to facilitate the insertion of the stripped ends 14 and 16 within themember '10.
  • the member 10 is coated with a thin layer of a solder alloy 17 and is also provided with a portion of flux.
  • solder layer is shown in the drawings as a continuous coating, it may, instead, cover only a portion of the member 10.
  • layer 17' could cover only the inner surface of the member '10 or'could cover just appropriate parts of the inner surface.
  • the stripped end 14 of conductor 13 is inserted in the round oval end 11, preferably so that it extends to. the transition 18 between the round and flattened portions of the member 10.
  • the stripped end 16 of conductor .15 is' similarly inserted within the flattened oval end12, also, preferably extending to transition 18.
  • the member and strippedends are then heated by any conventional means'such as-infrared,'hot air or induction heating in order to meltthe flux and solder alloy layer 17 which then flows ontostripped ends 14 and 16 thereby creating a secure' electrical and me- .chanical connection,
  • Theamount of solder used preferbeen made heat recoverable softhat it will tend'to shrink when it is' heated to its heat recovery temperature.
  • Su'ch heat recoverable sleeves an'dtheir various uses, are'disclosed' in U.S; Pat; No. 2,027,962 to Currie;
  • Sleevefl25 should extend beyond the ends of the'inser't' so that it can cover thestripped portions of the conductors which will beinserted withinm'ember l0.
  • FIG. 3 the connector device of FIG. 2 is shown after it has been installed on insulated con- -ductors l3 and 15.
  • Heat recoverable sleeve 25 is shown v in phantom lines after it has shrunk around the insulated conductors 13 and i5 and the conductive insert.
  • solder formed from a flat. sheet of conductive metal. This sheet may. be coated with a layer of a solder alloy and flux either before or after it has been formed intolts final shape. The coating of solder may be'only on a portion of the "interior surface. the entire interior surface,
  • the plastic sleeve may, be
  • FIG. 5 an alternate embodiment of the insert of the'presentiinvention is shown in perspective view and identified by reference character 30. in-
  • sert 30 has an outer layer 31 of aconductive material such as copper or berylium copper and an inner-layer 32 of a-solde'r alloy.
  • the solder layer 32 extends from the flat end 33 to the rounded end 34 of insert 30.
  • opening 35 is located midwayalong the rounded portion of insert 30. Opening 35fpermits the'viewing of the interior of insert'30'and, when "atransparent heat'recoverable member is used; permits the visual-confirmation of a completedsoldered joint.
  • FIG. l3 shows the stripped endportion 'ofa cable I having a plurality of flat conductors 70, 71 and '72 within an insulative material 73.”
  • The' insert of the-presentinvention canbeused'to terminate a cable stripped in this ,man'neras described below.
  • Insert30 is shown in fendview in FIG; 6 andjin side cross-sectional view -in I-?IG. ⁇ 7.
  • I- lat end. 33 of insert3i) is adapted for electrical connection witha flat conductor such as that shownin FIG. 13 0f the drawingsand identified byreference characterjfl.
  • Rot serie 34 of insert 30 is-adaptedforelectrical connection to"around conductor suchasthat identified reference character 14 in FIG.
  • the ⁇ flared endsof the connector help to eliminate a potential source of weakness which might otherwise result from contact between the connector ends and the conductors. These flared ends are also beneficialto fa- I heated.
  • the unitary condiictive metallic member may be wrapped conductors'or'the like the endsof whichhave also been stripped. The extent Of s trippingfshouldbe such that the conductor insulator is within member 40 but should not extend into the conductive inserts.
  • Member 40 may be provided with a heat activated ads hesive, or other softenable material which serves to insulate and seal a conductor from the adjacentconductors.
  • a strippedendoi a round insuy lated conductor is inserted into each opening'along open end 42.
  • the stripped ends of the conductors may be tinned to furtherfacilitate the solderingstep.
  • insertions should be such that the insulation of theconf ductors extend within insulativemember 40.
  • Member 40' is then heated byany conventional meanssuch as infrared. hot air or induction heatingjin order' to cause heat recoverable member 40 to recover against the inserted conductors and further to cause the flux and sol-' der layers of the conductive inserts to melt and electrically connect the conductors to the inserts.
  • a particularly simple and yet effective electrical connection results from the combination of an insert of the type described above within a heat recoverable member.
  • the insert may have a completely open end such as end 33 of FIG. 5 andyet an excellent electrical contact results.
  • This excellence of connection is a resuit of the fact that the conductor is held tightly against the insert at a time when the solder is heated to a temperature sufficient to cause it to melt and cooled to solidify.
  • FIG. 9 an alternate embodiment of the insert of the present invention is indicated by reference character 50. Both ends of insert 50 are identical and a viewing port is located near each end as indicated layer but instead could be selectively coated on portions of the interior of the inserts of the present invention.
  • outer layer 53 of a conductive material such as berylium copper provides structural strength and electrical conductivity to the insert.
  • An inner layer of flux and a solder alloy 54 is provided in the interior of insert 50.
  • insert 65 has a socket end 66, described below and a flat end 67 which functions in a manner analogous to the flat end of device 30 in FIG. 5.
  • Socket end 66 is flared outwardly at its terminous to facilitate the insertion of a conductive pin therein.
  • a pair of slits 68 and 69 are located in the side wall of insert 65 to provide a spring action which tends to hold a pin of an appropriate diameter which has been inserted into end 66.
  • Insert 65 is preferably fabricated from a metal having good resiliency and strength such as berylium copper.
  • the outer layer of conductive material is preferably formed from a metal which is both a good electrical conductor and also readily accepts solder. Copper such as oxygen free copper, electro tough pitch copper and copper alloys such as berylium copper are preferred.
  • a connector including a conductive insert disposed within a heat recoverable member for forming an electrical and mechanical connection between conductors, said insert comprising; a heat recoverable member having disposed therein an elongated layer of a conductive material,- each end of said layer having an inner surface for receiving a conductor; and
  • a layer of electrically conductive solder means disposed on at least a portion of one of said inner surfaces of said conductive elongated layer, recovery of the heat recoverable member after positioning at least one conductor proximate to each of said inner surfaces resulting in the melting of said solder means and in the electrical and mechanical connection between the conductors, said insert being adapted to connect a flat conductor to a round conductor wherein one end of said layer of conductive material is formed into a cylindrical shape having a viewing port located in the side thereof and theother end of said layer of conductive material being formed into a generally flat shape.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US00262084A 1972-06-12 1972-06-12 Conductive insert for heat recoverable electrical connector Expired - Lifetime US3852517A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
US00262084A US3852517A (en) 1972-06-12 1972-06-12 Conductive insert for heat recoverable electrical connector
IL42372A IL42372A (en) 1972-06-12 1973-05-28 Electrical connector
AU56333/73A AU489947B2 (en) 1972-06-12 1973-05-30 Electrical connectors
SE7308079A SE399337B (sv) 1972-06-12 1973-06-07 Skarvkontakt lemplig for framstellning av en stumfog mellan tva elektriska ledare
GB2740573A GB1407513A (en) 1972-06-12 1973-06-08 Electrical connectors
JP48064619A JPS4950476A (en:Method) 1972-06-12 1973-06-08
ZA733929A ZA733929B (en) 1972-06-12 1973-06-11 Electrical connectors
CA173,664A CA1024627A (en) 1972-06-12 1973-06-11 Electrical connector having hollow insulator and conductive insert
ES415827A ES415827A1 (es) 1972-06-12 1973-06-12 Perfeccionamientos en la construccion de conectores elec- tricos.
IT25248/73A IT989092B (it) 1972-06-12 1973-06-12 Connettori elettrici
FR7321247A FR2188330B1 (en:Method) 1972-06-12 1973-06-12
DE2329908A DE2329908A1 (de) 1972-06-12 1973-06-12 Elektrische kupplung
CH845273A CH572283A5 (en:Method) 1972-06-12 1973-06-12
BE132182A BE800810A (fr) 1972-06-12 1973-06-12 Connecteurs electriques
NLAANVRAGE7308155,A NL176119C (nl) 1972-06-12 1973-06-12 Verbindingsorgaan met een buitenhuis van bij toevoer van warmte krimpend materiaal.
CA288,748A CA1087265A (en) 1972-06-12 1977-10-14 Butt joint electrical connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00262084A US3852517A (en) 1972-06-12 1972-06-12 Conductive insert for heat recoverable electrical connector

Publications (1)

Publication Number Publication Date
US3852517A true US3852517A (en) 1974-12-03

Family

ID=22996093

Family Applications (1)

Application Number Title Priority Date Filing Date
US00262084A Expired - Lifetime US3852517A (en) 1972-06-12 1972-06-12 Conductive insert for heat recoverable electrical connector

Country Status (14)

Country Link
US (1) US3852517A (en:Method)
JP (1) JPS4950476A (en:Method)
BE (1) BE800810A (en:Method)
CA (1) CA1024627A (en:Method)
CH (1) CH572283A5 (en:Method)
DE (1) DE2329908A1 (en:Method)
ES (1) ES415827A1 (en:Method)
FR (1) FR2188330B1 (en:Method)
GB (1) GB1407513A (en:Method)
IL (1) IL42372A (en:Method)
IT (1) IT989092B (en:Method)
NL (1) NL176119C (en:Method)
SE (1) SE399337B (en:Method)
ZA (1) ZA733929B (en:Method)

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FR2382779A1 (fr) * 1977-03-04 1978-09-29 Raychem Pontoise Sa Objet a reprise thermique
US4135336A (en) * 1975-10-24 1979-01-23 Virginia Plastics Company Plastic guy wire guard and method of making and using same
FR2425744A1 (fr) * 1978-05-09 1979-12-07 Raychem Pontoise Sa Connecteur et procede de connexion
EP0261938A3 (en) * 1986-09-26 1988-08-17 Raychem Limited Circuit protection device
EP0261939A3 (en) * 1986-09-26 1988-08-17 Raychem Limited Circuit protection device
EP0261937A3 (en) * 1986-09-26 1988-08-17 Raychem Limited Circuit protection device
EP0259179A3 (en) * 1986-09-05 1988-08-17 Raychem Limited Overvoltage protection device
EP0242902A3 (en) * 1986-03-26 1988-08-31 Raychem Limited Protection device
WO1989004071A1 (en) * 1987-10-29 1989-05-05 E.I. Du Pont De Nemours And Company Connector having expansible barrel
US5308922A (en) * 1992-06-08 1994-05-03 Reactive Industries, Inc. Wire connector and method of manufacture
US5426130A (en) * 1991-02-15 1995-06-20 Nd Industries, Inc. Adhesive system
US5594211A (en) * 1995-02-22 1997-01-14 Burndy Corporation Electrical solder splice connector
NL1001453C2 (nl) * 1995-10-20 1997-04-22 Witmetaal B V Soldeerelement.
US5821465A (en) * 1995-05-26 1998-10-13 Yazaki Corporation Joint section between flat cable and lead wires
WO2002017436A1 (en) * 2000-08-23 2002-02-28 Shannon John K Jr Solder-in-place axial-type connector
US6372988B1 (en) 1997-01-07 2002-04-16 Paul C. Burke Seamless flat-round conductive cable for a retractable cord reel
US20030226823A1 (en) * 2002-05-20 2003-12-11 Yazaki Corporation Welding terminal and welding apparatus for welding the same
US20040046134A1 (en) * 2002-09-05 2004-03-11 Fuji Photo Film Co., Ltd. Line light source system
US20070072455A1 (en) * 2005-09-29 2007-03-29 Yazaki Corporation Wire-connecting device
EP1919032A1 (fr) * 2006-11-06 2008-05-07 Dav Module de commande, en particulier pour véhicule automobile
CN100576633C (zh) * 2005-09-29 2009-12-30 矢崎总业株式会社 线连接装置
US20130139553A1 (en) * 2009-04-08 2013-06-06 Saint-Gobain Glass France Furnace having a thermal barrier
US20140273560A1 (en) * 2013-03-12 2014-09-18 Thomas & Betts International Llc Hybrid Grounding Connector
EP2983248A1 (en) * 2014-08-08 2016-02-10 Hosiden Corporation Contact
US20160128390A1 (en) * 2013-06-24 2016-05-12 Kimree Hi-Tech Inc. Electronic cigarette heat-generating device and electronic cigarette
US10217542B2 (en) * 2015-04-21 2019-02-26 Sumitomo Wiring Systems, Ltd. Conductive member
EP3540858A1 (de) * 2018-03-12 2019-09-18 Yazaki Corporation Kabelverbindungsstruktur und herstellungsverfahren der kabelverbindungsstruktur
US11404838B2 (en) * 2019-03-08 2022-08-02 Onanon, Inc. Preformed solder-in-pin system
US11557884B2 (en) * 2019-05-30 2023-01-17 International Business Machines Corporation Fixture aligner

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JPS6088946U (ja) * 1983-11-24 1985-06-18 春日　一二 双線式の差込器
DE4231387A1 (de) * 1992-09-19 1994-03-24 Kolbe & Co Hans Verfahren zur Herstellung von Lötverbindungen zwischen Koaxialkabeln und nach dem Verfahren hergestellte Verbindung
DE4401819A1 (de) * 1994-01-22 1995-07-27 Kolbe & Co Hans Kabelanordnung
DE10357048A1 (de) * 2003-12-04 2005-07-21 Leoni Bordnetz-Systeme Gmbh & Co Kg Verfahren zum Herstellen einer elektrischen Verbindung zwischen einem Aluminiumleiter und einem Kontaktelement

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US2868863A (en) * 1954-01-05 1959-01-13 Kaiser Aluminium Chem Corp Aluminum to copper connection
US2972657A (en) * 1956-05-11 1961-02-21 Henry F Stemke Connector
AT198171B (de) * 1957-05-27 1958-06-10 Schaffler & Co Verfahren zur Herstellung einer mechanischen und elektrisch leitenden Verbindung der Anschlußlamellen eines elektrischen Gerätes, vorzugsweise eines elektrischen Minenzünders, mit den Enden der Zuleitungsdrähte
US3100813A (en) * 1959-01-12 1963-08-13 Sprague Electric Co Capacitor sealing means
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Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135336A (en) * 1975-10-24 1979-01-23 Virginia Plastics Company Plastic guy wire guard and method of making and using same
FR2382779A1 (fr) * 1977-03-04 1978-09-29 Raychem Pontoise Sa Objet a reprise thermique
FR2425744A1 (fr) * 1978-05-09 1979-12-07 Raychem Pontoise Sa Connecteur et procede de connexion
EP0242902A3 (en) * 1986-03-26 1988-08-31 Raychem Limited Protection device
EP0259179A3 (en) * 1986-09-05 1988-08-17 Raychem Limited Overvoltage protection device
US4887182A (en) * 1986-09-26 1989-12-12 Raychem Limited Circuit protection device
EP0261937A3 (en) * 1986-09-26 1988-08-17 Raychem Limited Circuit protection device
EP0261939A3 (en) * 1986-09-26 1988-08-17 Raychem Limited Circuit protection device
EP0261938A3 (en) * 1986-09-26 1988-08-17 Raychem Limited Circuit protection device
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Also Published As

Publication number Publication date
AU5633373A (en) 1974-12-05
NL176119C (nl) 1985-02-18
IT989092B (it) 1975-05-20
ES415827A1 (es) 1976-02-01
DE2329908A1 (de) 1974-01-24
IL42372A (en) 1977-04-29
CH572283A5 (en:Method) 1976-01-30
NL176119B (nl) 1984-09-17
NL7308155A (en:Method) 1973-12-14
SE399337B (sv) 1978-02-06
FR2188330B1 (en:Method) 1979-01-26
BE800810A (fr) 1973-12-12
FR2188330A1 (en:Method) 1974-01-18
CA1024627A (en) 1978-01-17
IL42372A0 (en) 1973-07-30
GB1407513A (en) 1975-09-24
JPS4950476A (en:Method) 1974-05-16
ZA733929B (en) 1974-05-29
DE2329908C2 (en:Method) 1987-08-20

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