EP0147218A2 - Die Isolation durchstechender Pressverbinder - Google Patents

Die Isolation durchstechender Pressverbinder Download PDF

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Publication number
EP0147218A2
EP0147218A2 EP84309046A EP84309046A EP0147218A2 EP 0147218 A2 EP0147218 A2 EP 0147218A2 EP 84309046 A EP84309046 A EP 84309046A EP 84309046 A EP84309046 A EP 84309046A EP 0147218 A2 EP0147218 A2 EP 0147218A2
Authority
EP
European Patent Office
Prior art keywords
conductor
insulation
cantilevered
insulation piercing
conductive member
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Withdrawn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
EP84309046A
Other languages
English (en)
French (fr)
Other versions
EP0147218A3 (de
Inventor
Sydney Levy
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.)
ABB Installation Products Inc
Original Assignee
Thomas and Betts 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 Thomas and Betts Corp filed Critical Thomas and Betts Corp
Publication of EP0147218A2 publication Critical patent/EP0147218A2/de
Publication of EP0147218A3 publication Critical patent/EP0147218A3/de
Withdrawn legal-status Critical Current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
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2412—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by insulated cams or wedges

Definitions

  • the invention relates generally to insulation piercing electrical terminals for insulated wire and more particularly to an electrical terminal having insulation piercing projections for contacting the conductor of the wire and compressively retaining the conductor therein.
  • insulation piercing and insulation displacing contacts are widespread in the electrical wire terminating industry.
  • the advantage of such contacts is that insulated wire need not be stripped of the insulation prior to termination. This of course saves both installation time and expense as no stripping tools need be employed.
  • I.D.C. insulation displacing contacts
  • U-shaped or forked terminals are well known for terminating solid conductor wire. Examples of these connectors are shown in U.S. Patent No. 3,117,829 issued on January 14, 1964 and in U.S. Patent No. 3,058,088 issued on October 9, 1962. As can be seen in these references the "U"-shaped contact engages the cable at substantially 90° and spans the diameter thereof. The tines then deform in some manner to accommodate the solid conductor therebetween
  • the present invention contemplates providing an electrical terminal for an insulated wire conductor which includes a plurality of insulation displacing contacts.
  • the contacts pierce the insulation and contact the conductor.
  • a plurality of slots are formed between the contacts which support and engage the conductor in compressive fashion, thus establishing an effective compressive electrical connection.
  • a section of electrical cable 10 is shown comprising an outer insulative jacket 12 made of plastic or similar material, surrounding a conductor 14.
  • the present invention terminates stranded conductors 16 which collectively form conductor 14.
  • Connector 20 is a two-piece member comprising an outer housing or sleeve 22 and a conductive member 24.
  • Sleeve 22 is an elongate hollow cylindrical structure having a central bore 26.
  • Sleeve 22 slidably frictionally receives conductive member 24 as will be described in detail hereinafter.
  • sleeve 22 is constructed of steel or similar metal, however it is also contemplated that sleeve 22 may be constructed of a non-conductive, suitably rigid material such as glass-filled plastic or ceramic as sleeve 22 need not be in conductive contact with conductive member 24.
  • Conductive member 24 has an elongate body having a terminal end portion 28, a frusto-conical central region 30, and a cylindrical insulation displacing contact portion 32 at the end axially opposite terminal end portion 28.
  • terminal end portion 28 is in the form of a pin for insertion into a mating socket of a similar wire connector.
  • the present invention also contemplates forming a socket or other terminal shape in place of the pin shown in the drawings.
  • Insulation displacing contact portion 32 includes four identical contact arms 34 which extend in cantilevered fashion from and circumferentially around a cylindrical body section 36 adjacent frusto-conical region 30.
  • Contact arms 34 are formed from cylindrical insulation displacing contact portion 32 and are resiliently deformable.
  • Cylindrical body section 36 as well as cantilever contact arms 34, in compressed position, have an outer diameter which is closely dimensioned to the inner diameter of sleeve 22 to permit sleeve 22 to frictionally slide thereover.
  • each of the unsupported ends of cantilevered contact arms 34 ' includes a transversely extending insulation piercing projection 38.
  • projection 38 is a wedge-shaped member having a pair of substantially perpendicular side edges 40 and 41 which intersect and form an insulation piercing point 42.
  • the remaining edge 43 of the wedge-shaped projection 42 is arcuate at the juncture with cantilevered arm 34.
  • Connector 20 is connected to cable 10 by inserting a cable end 21 (Fig. 1) among the spread apart cantilevered contact arms 34 and into cylindrical body section 36 until it abuts against the interior walls of the frusto-conical section 30.
  • sleeve 22 is slidably moved in the direction shown by arrow A over body section 36. Further movement of sleeve 22 in the direction of arrow A, will force sleeve 22 into engagement with the base of cantilevered contact arms 34. Still further progression of sleeve 22 will urge contact arms 34 inwardly toward cable 10.
  • the points 42 of the four projections 38 will pierce the insulative jacket 12 of cable 10 and contact the conductor 14.
  • the strands 16 forming conductor 14 will be displaced. Initially, the strands 16 substantially occupy the inner cross-sectional area of cable jacket 12. Movement of insulation piercing projections 38 displaces the strands into an increasingly smaller cross-sectional area. As a result of such displacement the strands 16 will be progressively compressed between the respective opposed side walls 40 and 41 of the insulation piercing projections. As shown in Figs.
  • sleeve 22 In fully progressed position sleeve 22 will lie adjacent the distal end of conductive member 24.
  • the insulation piercing projections 38 which have been radially, inwardly disposed by movement of sleeve 22, engage strands 16 within elongate rectangular slots 44 formed by the opposed side edges 40 and 41 of adjacent respective projections 38.
  • the side edges 40 and 41 of each projection 38 are substantially normal to the other.
  • slots 44 defined by and between adjacent edges have substantially parallel side walls and extend radially from a central locus 45 coincident with the central axis of the connector 20.
  • Each compressed slot 44 is bounded on longitudinal sides by opposed side walls 40 and 41 of two adjacent projections 38.
  • the slots 44 are further bounded on their transverse sides by the central locus 45 and by the outer jacket 12.
  • strands 16 upon compression by the movement of projection 38, will be retained and compressed in the four elongate rectangular slots 44. Since each adjacent wall 40 and 41 of such projections 38 is disposed parallel to each other, the compression will be uniform across the length of each slot 44 i.e., radially from locus 45 to jacket 12.
  • the slots 44 will have a slot width, between two adjacent side walls 40 and 41, which decreases upon movement of projections 38.
  • the present invention prevents tendency for the strands 16 to move radially outwardly from the central locus 45 upon connection.
  • the conductor strands 16 are compressed without radial movement into a cross-shaped area defined by slots 44 which is substantially less than the original circular cross-sectional area by which the strands normally occupy, as shown in Fig. 4.
  • the movement of projections 38, in addition to compressing strands 16 into slots 44 also slightly deforms the strands 16 so as to provide for their accommodation in the smaller cross-sectional area.
  • connection formed Since the strands 16 are bounded within the slots 44 as defined above, the connection formed, will be gas tight preventing oxidation of the strands 16 at the point of connection. Further, as the strands are securely retained in the slots 44 presenting relative movement therebetween, the electrical connection will be permanent and not subject to intermittent contact.
  • the present invention employs four right angle projections 38 which upon compression form four extending perpendicular slots 44 extending from locus 45 at 90° orientation from the adjacent slot. It is however contemplated that the present invention may also include other numbers of projections such as those which can have side edges formed at 120° thus providing three slots into which the strands 16 can be compressed. It is noted however that in each case regardless of the number of slots, the side edges forming the slot will have parallel longitudinal sides thus preventing any radially outward migration of the strands upon connection. Other similar arrangements will also become evident to one skilled in the art.
  • plural conductive members 24 can be mounted in a single housing, in a multi-pin arrangement, for mass termination upon movement of the housing relative to such plural conductive members 24.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP84309046A 1983-12-29 1984-12-21 Die Isolation durchstechender Pressverbinder Withdrawn EP0147218A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56664783A 1983-12-29 1983-12-29
US566647 1990-08-13

Publications (2)

Publication Number Publication Date
EP0147218A2 true EP0147218A2 (de) 1985-07-03
EP0147218A3 EP0147218A3 (de) 1987-07-15

Family

ID=24263796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84309046A Withdrawn EP0147218A3 (de) 1983-12-29 1984-12-21 Die Isolation durchstechender Pressverbinder

Country Status (3)

Country Link
EP (1) EP0147218A3 (de)
JP (1) JPS60221977A (de)
AU (1) AU557587B2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232018A (en) * 1989-04-17 1990-11-28 Hosiden Electronics Co Multipin connector
US5368580A (en) * 1992-12-22 1994-11-29 Suzuki; George R. Disposable safety guard for syringe needles and the like
GB2289578A (en) * 1994-05-21 1995-11-22 Hawke Cable Glands Ltd Glands for terminating cables and pipes
DE102006036538A1 (de) * 2006-03-17 2007-09-20 Gerhard Handlbauer Kabelverbinder und Kabelverbindungsanordnung
US9502786B2 (en) 2013-07-11 2016-11-22 Harting Electric Gmbh & Co. Kg Electrical contact element
CN110994218A (zh) * 2019-12-18 2020-04-10 林正军 一种用于电缆电线的连接装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4723916A (en) * 1986-10-23 1988-02-09 E. I. Du Pont De Nemours And Company Pin plug and socket connector using insulation displacement contacts
JPH0188466U (de) * 1987-12-03 1989-06-12
JP7144290B2 (ja) * 2018-11-22 2022-09-29 矢崎総業株式会社 端子接続構造

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725545A (en) * 1953-12-28 1955-11-29 Gordon Harry Electrical connector having insulation penetrating means contactiong the conductors
FR1312525A (fr) * 1961-11-07 1962-12-21 Prise pour câble coaxial
DE1490490A1 (de) * 1963-11-29 1969-06-04 Sueddeutsche Kabelwerke Zweign Kontakthuelse zur Armierung von elektrischen Kabeln
US3728665A (en) * 1970-10-26 1973-04-17 Thomas & Betts Corp Electrical connector

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232018A (en) * 1989-04-17 1990-11-28 Hosiden Electronics Co Multipin connector
US5021012A (en) * 1989-04-17 1991-06-04 Hosiden Electronics Co., Ltd. Multipin connector
GB2232018B (en) * 1989-04-17 1994-01-19 Hosiden Electronics Co Multipin connector
US5368580A (en) * 1992-12-22 1994-11-29 Suzuki; George R. Disposable safety guard for syringe needles and the like
GB2289578A (en) * 1994-05-21 1995-11-22 Hawke Cable Glands Ltd Glands for terminating cables and pipes
US5648639A (en) * 1994-05-21 1997-07-15 Hawke Cable Glands Limited Glands for terminating cables and pipes
GB2289578B (en) * 1994-05-21 1997-09-17 Hawke Cable Glands Ltd Glands for terminating cables and pipes
DE102006036538A1 (de) * 2006-03-17 2007-09-20 Gerhard Handlbauer Kabelverbinder und Kabelverbindungsanordnung
DE102006036538B4 (de) * 2006-03-17 2010-11-04 Gerhard Handlbauer Kabelverbinder und Kabelverbindungsanordnung
US9502786B2 (en) 2013-07-11 2016-11-22 Harting Electric Gmbh & Co. Kg Electrical contact element
CN110994218A (zh) * 2019-12-18 2020-04-10 林正军 一种用于电缆电线的连接装置

Also Published As

Publication number Publication date
AU557587B2 (en) 1986-12-24
JPS60221977A (ja) 1985-11-06
AU3708384A (en) 1985-07-04
EP0147218A3 (de) 1987-07-15

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Inventor name: LEVY, SYDNEY