EP0251556A2 - Contact électrique à deux fentes - Google Patents

Contact électrique à deux fentes Download PDF

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Publication number
EP0251556A2
EP0251556A2 EP87305329A EP87305329A EP0251556A2 EP 0251556 A2 EP0251556 A2 EP 0251556A2 EP 87305329 A EP87305329 A EP 87305329A EP 87305329 A EP87305329 A EP 87305329A EP 0251556 A2 EP0251556 A2 EP 0251556A2
Authority
EP
European Patent Office
Prior art keywords
central portion
termination section
slot
conductor
termination
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Withdrawn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
EP87305329A
Other languages
German (de)
English (en)
Other versions
EP0251556A3 (fr
Inventor
Wilbur Arthur Hamsher, Jr
William Brian Long
William Charles Arbogast, Jr.
John Raymond Shuey
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.)
TE Connectivity Corp
Original Assignee
AMP Inc
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
Priority claimed from US06/882,126 external-priority patent/US4692121A/en
Priority claimed from US06/882,048 external-priority patent/US4690647A/en
Priority claimed from US06/882,047 external-priority patent/US4687264A/en
Application filed by AMP Inc filed Critical AMP Inc
Publication of EP0251556A2 publication Critical patent/EP0251556A2/fr
Publication of EP0251556A3 publication Critical patent/EP0251556A3/fr
Withdrawn legal-status Critical Current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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • 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
    • H01R4/027—Soldered or welded connections comprising means for positioning or holding the parts to be soldered or welded

Definitions

  • This relates to the field of electrical connectors and more particularly to contact terminals for conductor termination.
  • Electrical contact terminals are known which are used to terminate a pair of conductors in a single slot by welding, particularly by laser welding. Such contact terminals are known from U.S. Patent No. 4,57 9 , 4 04 for use in a single-row electrical connector for terminating the pairs ' of ground conductors in tri-lead high speed signal transmission cables. A similar but double-row connector is known from European Patent Application Publication No. 0 211496. Such terminals require the pairs of ground conductors to be brought together side-by-side near the top of the slot and in interference fit therein for termination remote from the respective signal conductors of the cables.
  • the signal conductors are separately but similarly terminated to respective signal terminals insulated from the ground terminals by the dielectric carrier to which the terminals are secured, and the entire conductor-terminated subassembly is then overmolded forming the connector.
  • Contact sections of the terminals are disposed at the forward end of the connector, ready for electrical engagement with corresponding terminal means of a mating electrical connection means.
  • the area of the weld joint is wider than if a single conductor were being welded in a correspondingly narrower slot.
  • the weld joint must join to the side walls of the slot whose top surfaces are preferably approximately coplanar with the top portions of the conductor or conductors for optimizing the laser weld termination.
  • a typical conductor diameter is about 0.010 inches and the corresponding weld joint for the side-by-side conductors is about 0.040 to 0.045 inches in diameter.
  • a smaller weld joint for only one such conductor requires less energy of the laser beam during welding, and a lower energy level incurs less risk of damaging the very small conductor wire.
  • each' row of cables (or each flat cable) has a contact carrier associated with it having signal terminals on one side and a single ground plane on the other, with each slot of the ground plane receiving a pair of side-by-side ground conductors therein for laser weld termination.
  • Either ground plane is formed by first stamping the plurality of slots in a metal blank near one side edge of the blank, then folding over a portion of the blank along that side edge so that the slots now extend out to the newly formed edge to receive the conductor or pair of conductors. But with either ground plane, all grounds of a row of cables (or of the flat cable) are terminated only on the same side of the carrier, and each row of cables or flat cable requires its own contact carrier.
  • either type of ground plane delimits or complicates the programmability of a double-row connector, and cannot be used in the double-row connector of aforementioned European No. 0211496.
  • a stamped and formed contact terminal with a contact section proximate one end thereof has .a spaced pair of parallel slots extending inwardly from the other end thereof to receive respective conductors thereinto to be held in interference fit therein for weld termination such as by laser welding.
  • Each slot has at least at one axial location therealong a width slightly less than the diameter of the conductor and holds its conductor so that the top-most portion of its conductor is approximately coplanar with the top of at least one side of the slot.
  • the dual slot terminal of the present invention is made by stamping a terminal blank including a contact section and a tab portion extending rearwardly from a termination section, joined thereto by a narrower neck-portion and having a precisely selected width.
  • Side portions of the termination section are bent upward forming low height vertical side walls, and the tab portion is bent backward at the neck portion to be disposed between the side walls and along the termination section, spaced from the side walls to define a pair of slots of precise width.
  • the top of the bent-over tab portion is preferably coplanar with the top surfaces of the side walls, and edges along the slots are preferably swaged.
  • the dual slot terminal of the present invention is made by stamping a terminal blank including a contact section and a termination section rearwardly therefrom.
  • a central boss is stamped upwardly from said termination section having a precisely selected width and precise parallel vertical side surfaces.
  • side portions of the termination section are bent'upwardly forming parallel low height vertical side walls spaced from the side surfaces of the central boss a selected distance to define a pair of slots of precise width.
  • the top surface of the central boss is preferably coplanar with the top surface portions of the conductor wires disposed along the slots, and edges of at least the side walls along the slots are preferably swaged.
  • rounded bosses extend inwardly from high side walls to secure the conductors in the slots below the rounded bosses, with the top surface portions of the conductor wires coplanar with the top of the central boss.
  • Connector 20 0 comprises a terminal assembly 202 having a plurality of terminals disposed in passageways 204 extending rearwardly from the mating face 206 of the connector. Rearward sections of the terminals (not shown) extend along a contact-carrying portion 208 of the terminal assembly and are terminated to conductors of cables 210.
  • a dielectric covering 212 is overmolded over the terminal assembly sealing the terminations and extending along cables 210, securing the cables to the connector to form a cable harness 214 and provide nondistorting strain relief.
  • transverse bar 216 spaced rearwardly from covering 212 and joined to it by axial webs 218, bar 216 also being molded over the cables integrally with covering 212 and providing secondary nondistorting strain relief for the cables and also spacing and supporting them.
  • Figure 2 shows a terminal assembly 10 usable in such a connector, which assembly comprises a premolded forward housing member 12, signal terminals 14 and ground terminals 16.
  • Signal conductors 18 of cables 20 are stripped to be terminated to termination sections 22 of signal terminals 14, and pairs of ground conductors 24A,24B of cables 20 are stripped to be terminated to termination sections 26 of ground terminals 16.
  • Contact sections 28 of ground terminals 16 are identical to contact sections 30 of signal terminals 14 and will be disposed along and secured within passageways 32 of housing 12 which extend from housing mating face 34 to contact-carrying portion 36.
  • Termination sections 22,26 of signal and ground terminals 14,16 extend along contact-carrying portion 36, preferably in shallow recesses 38 thereof.
  • Terminal assembly 10 is assembled by securing contact sections 28,30 of terminals 14,16 within passageways 32 of housing 12, then terminating conductors 18,24A,24B to appropriate ones of terminals 14,16, and thereafter molding a dielectric covering over the contact-carrying portion, the terminals and stripped conductors, and along end lengths of the cables.
  • rear ends of passageways 32 are closed off by core pins in the mold which also hold terminals 14,16 firmly against the respective top or bottom surface of contact-carrying portion 36 of housing 1 2 .
  • Each signal terminal 14 preferably includes a single conductor-receiving slot 40 which is of a width just less than the diameter of a corresponding signal conductor 18. Signal conductor 18 is then wiped carefully along and into slot 40 by appropriate apparatus such as that disclosed in U.S. Patent No. 4,649,636. Signal conductor 18 will be held by interference fit within slot 40 until being welded therein such as preferably by laser welding.
  • Each ground terminal 16, best seen in Figure 3, includes a spaced pair of parallel conductor-receiving slots 42A,42B extending forwardly from a rearward end 44 of terminal 16. Within each slot 42A,42B will be wiped a respective ground conductor 24A,24B as with signal conductor 18 in slot 40 of signal terminal 14 above. Best seen in Figures 6A, 6B and 7, slots 42A,42B are slightly less wide than the diameter of respective ground conductors 24A,24B, to hold them in interference fit therein until being welded therein such as preferably by laser welding. Slots 42A,42B preferably have lead-ins 46A,46B respectively to assist in receiving a respective conductor being wiped thereinto and minimize possible damage to the conductor wire which may typically have a diameter of about 0.010 inches.
  • the dual slot terminal 50 of Figure 4 has a termination section shown being formed in Figures 5A and 5B.
  • Terminal 50 is stamped from a sheet of metal such as phosphor-bronze alloy, Copper Alloy 511 having a thickness of, for example, 0.007 inches.
  • Forward contact section 52 may be of the receptacle type shown in Figure 4. Prior to forming, it is preferred to swage top side edges 58A,58B of termination section 60 and.bottom side edges 62A,62B of tab portion 56.
  • side portions of termination section 60 are bent upward to form side walls 64A,64B, and in Figure 5C tab portion 56 is bent up and then back along surface 66 of termination section ,60, forming two slots 68A,68B in termination section 60.
  • Swaged edges 58A,58B and 62A,62B are disposed along tops of slots 68A,68B and will cooperate to form axially extending lead-ins to receive respective conductors being wiped thereinto, while neck portion 5 4 being narrower than tab portion 56 and also tapered now defines initial lead-ins 70 at the cable-proximate end of termination section 60.
  • stripped conductors 72A,72B are shown first partially wiped into interference fit within respective slots 68A,68B, and then fully wiped thereinto.
  • Conductor 72A is terminated by weld joint 74A which is preferably a laser weld joint.
  • Figure 7 illustrates conductors 72A,72B in interference fit between sides of tab portion 56 and respective opposing side walls 64A,64B and showing weld joint 74A of conductor 72A to terminal 50.
  • the dual slot terminal 80 of Figure 8 has a termination section 82 shown being formed in Figures 9A and 9B.
  • Termination section 82 has a central boss 84 stamped upwardly therefrom which extends axially and has precise vertical side surfaces 86A,86B and a substantially planar top surface 87.
  • Side walls 88A,88B may be higher than the top surface of central boss 84 and may have rounded bosses extending inwardly towards central boss 84 centered slightly above its top surface to provide the necessary narrow slot width at one axial location to hold conductor wires in interference fit in slots 90A,90B.
  • Edges 52A,52B may be deburred; and swaging of edges 94A,94B as in terminal 50 of Figure 6C, and either swaging or bending, or both, of corners 96A,96B is preferred to form axially extending lead-ins and initial lead-ins respectively to assist wiping of respective conductor wires into slots 9A,90B.
  • Terminal 8 0 of Figure 9B is believed to be easier to manufacture, with good control of slot width.
  • dual slot terminal 100 has a central boss 102 struck up from termination section 104.
  • Rounded bosses 106 are struck upward from side portions of termination section 104.
  • Side walls 108 are then bent vertically upwardly from the side portions forming slots 110 such that rounded bosses 106 extend inwardly centered slightly above the plane of top surface 112 of central boss 102.
  • conductor wires 114 are wiped along and into slots 110, each wire 114 is forced downward between a rounded boss 106 and side surface 116 of central boss 102 and is held in slot 110 by rounded boss 106.
  • Figure 10B also shows a laser weld joint 118 of one of the conductor wires 114 to terminal 100.
  • Figure 11 illustrates still another embodiment of a dual slot terminal of the present invention, terminal 120.
  • the dual slot terminal of the present invention can be made in several specific ways with minor variations in the ultimate structure, without depart:ing from the spirit of the invention and the scope of the claims.
  • Such a terminal would most commonly be used as a ground terminal for a tri-lead cable to receive a pair of ground wires associated with the same signal conductor. But the terminal can be used to receive ground conductors from two cables, or even signal conductors from two different cables were it desired for the terminal to conduct an electrical signal from either one of a pair of cables.
EP87305329A 1986-07-03 1987-06-16 Contact électrique à deux fentes Withdrawn EP0251556A3 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US06/882,126 US4692121A (en) 1986-07-03 1986-07-03 Dual slot electrical contact and method of making same
US882048 1986-07-03
US06/882,048 US4690647A (en) 1986-07-03 1986-07-03 Electrical contact for receiving two conductors
US06/882,047 US4687264A (en) 1986-07-03 1986-07-03 Dual slot electrical contact and method of making same
US882047 1986-07-03
US882126 2001-06-15

Publications (2)

Publication Number Publication Date
EP0251556A2 true EP0251556A2 (fr) 1988-01-07
EP0251556A3 EP0251556A3 (fr) 1990-01-03

Family

ID=27420511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87305329A Withdrawn EP0251556A3 (fr) 1986-07-03 1987-06-16 Contact électrique à deux fentes

Country Status (2)

Country Link
EP (1) EP0251556A3 (fr)
JP (1) JP2782437B2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1128469A1 (fr) * 2000-02-21 2001-08-29 Sumitomo Wiring Systems, Ltd. Contact à déplacement d'isolant et son procédé de fabrication
US20110265947A1 (en) * 2010-04-28 2011-11-03 Hella Kgaa Hueck & Co. Method of creating a positive substance joint between components
FR2983648A1 (fr) * 2011-12-01 2013-06-07 Sc2N Sa Contact de connecteur electrique pour la connexion a un fil d'un composant electronique
WO2013092116A1 (fr) * 2011-12-19 2013-06-27 Lisa Dräxlmaier GmbH Élément de contact pour raccorder une ligne de câble, son procédé de fabrication et procédé pour relier un élément de contact à une ligne de câble

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3048485B2 (ja) * 1993-03-15 2000-06-05 矢崎総業株式会社 端子と電線のビーム溶接方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112019A1 (fr) * 1982-11-17 1984-06-27 AMP INCORPORATED (a New Jersey corporation) Raccord électrique à fiche
WO1986001946A1 (fr) * 1984-09-20 1986-03-27 Amp Incorporated Connecteur electrique a double rangee

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53122644A (en) * 1977-03-31 1978-10-26 Matsushita Electric Works Ltd Spot welding method
JPS54111690A (en) * 1978-02-22 1979-09-01 Toyota Motor Co Ltd Method of connecting terminal for electric connection and wire and terminal for electric connection
JPS6328536Y2 (fr) * 1981-05-08 1988-08-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112019A1 (fr) * 1982-11-17 1984-06-27 AMP INCORPORATED (a New Jersey corporation) Raccord électrique à fiche
WO1986001946A1 (fr) * 1984-09-20 1986-03-27 Amp Incorporated Connecteur electrique a double rangee

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1128469A1 (fr) * 2000-02-21 2001-08-29 Sumitomo Wiring Systems, Ltd. Contact à déplacement d'isolant et son procédé de fabrication
US6435899B2 (en) 2000-02-21 2002-08-20 Sumitomo Wiring Systems, Ltd. Insulation-displacement terminal fitting and production method therefor
US20110265947A1 (en) * 2010-04-28 2011-11-03 Hella Kgaa Hueck & Co. Method of creating a positive substance joint between components
US8704123B2 (en) * 2010-04-28 2014-04-22 Hella Kgaa Method of creating a positive substance joint between components
FR2983648A1 (fr) * 2011-12-01 2013-06-07 Sc2N Sa Contact de connecteur electrique pour la connexion a un fil d'un composant electronique
WO2013092116A1 (fr) * 2011-12-19 2013-06-27 Lisa Dräxlmaier GmbH Élément de contact pour raccorder une ligne de câble, son procédé de fabrication et procédé pour relier un élément de contact à une ligne de câble

Also Published As

Publication number Publication date
EP0251556A3 (fr) 1990-01-03
JP2782437B2 (ja) 1998-07-30
JPS6417381A (en) 1989-01-20

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Inventor name: LONG, WILLIAM BRIAN

Inventor name: SHUEY, JOHN RAYMOND

Inventor name: HAMSHER, WILBUR ARTHUR, JR

Inventor name: ARBOGAST, WILLIAM CHARLES, JR.