US3662089A - Modifications of wire connectors - Google Patents

Modifications of wire connectors Download PDF

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Publication number
US3662089A
US3662089A US87715A US3662089DA US3662089A US 3662089 A US3662089 A US 3662089A US 87715 A US87715 A US 87715A US 3662089D A US3662089D A US 3662089DA US 3662089 A US3662089 A US 3662089A
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US
United States
Prior art keywords
clip
base
tangs
sidewalls
wires
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
US87715A
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English (en)
Inventor
John Patrick Harding
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Post Office
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Post Office
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Filing date
Publication date
Application filed by Post Office filed Critical Post Office
Application granted granted Critical
Publication of US3662089A publication Critical patent/US3662089A/en
Assigned to BRITISH TELECOMMUNICATIONS reassignment BRITISH TELECOMMUNICATIONS THE BRITISH TELECOMMUNICATIONS ACT 1981 (APPOINTED DAY) ORDER 1981 (SEE RECORD FOR DETAILS) Assignors: POST OFFICE
Assigned to BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY reassignment BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY THE BRITISH TELECOMMUNICATIONS ACT 1984. (1984 CHAPTER 12) Assignors: BRITISH TELECOMMUNICATIONS
Assigned to BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY reassignment BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY THE BRITISH TELECOMMUNICATION ACT 1984. (APPOINTED DAY (NO.2) ORDER 1984. Assignors: BRITISH TELECOMMUNICATIONS
Assigned to BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY reassignment BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY THE TELECOMMUNICATIONS ACT 1984 (NOMINATED COMPANY) ORDER 1984 Assignors: BRITISH TELECOMMUNICATIONS
Assigned to BRITISH TELECOMMUNICATIONS reassignment BRITISH TELECOMMUNICATIONS THE BRITISH TELECOMMUNICATIONS ACT 1981 (APPOINTED DAY) ORDER 1981 (SEE RECORD FOR DETAILS) Assignors: POST OFFICE
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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2495—Insulation penetration combined with permanent deformation of the contact member, e.g. crimping
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/188—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping having an uneven wire-receiving surface to improve the contact

Definitions

  • This invention relates to wire connectors and more particularly to metallic crimping clips for jointing together the individual and corresponding wires offirst andsecond multiconductor cables.
  • a crimping clip for joining together first and second lengths of insulated wire to make electrical connection between the wires, the clip consisting of a substantially trough-shaped electrically conductive member adapted to receive, along the length thereof, the first and second wires, the said member having a base and first'and second upstanding sidewalls, the base containing at least one wire engaging means, characterized in that the sidewalls are formed at a number of places with inwardly projecting tangs.
  • the wire engaging means in the base may include at least one pair of tongue portions cut from the base and bendable towards, and lying close to, the sidewalls of the clip, the transverse edges of the atleast one opening from which the. tongue portions arebendable curving upwardly and being resiliently yieldable.
  • Upwardly projecting tangs may be provided in the base of the clip, either on-their own or in combination with the upwardly curved edges.
  • the tangs in the sidewalls of the clip are so positioned that, when crimped,.they cooperate with the tangsin. the base-but do not lie directly above them.
  • the tangs in the base may be arrayed in two longitudinally extending rows,.and some, e.g., half of each row may be of reduced height comparedwith the remainder of the tangs in that row.
  • The-tangs in the sidewalls which arepositionedto cooperate with the tangsin thebase which are of reduced,height, may also be of reduced height.
  • the clip may be slit to permit resilient movement of one tangindependently of a second tang in a plane perpendicular to the plane of .the base.
  • the base may be slit adjacent both ends of the longitudinal axis thereof to provide first and second substantially triangular projections raiseable adjacent to each end so that their axes are perpendicular to, andtransverse of, the base of the trough-shaped member.
  • the first and second sidewalls may be provided with embossments adjacent to and engaging upwardly bent tongue portions.
  • the trough-shaped member may be positioned inside an insulatingcover. The cover may be pressed through the holes left .b'ythe piercing of the clip to form the tangs. Further holes may be provided in the clip to receivethe insulation which is pressed through the holes.
  • FIG. 1 is a plan view of an uncrimped clip
  • F IG. 2 is a longitudinal section along the line II-ll of FIG.
  • FIG. 3 is a scrap transverse section along the line III-III of FIG. 2, and,
  • FIG. 4 is a transverse section along the line IV-IV of FIG. 1.
  • the crimping clip comprises a substantially trough-shaped member 1 of resilient metal such as hard brass or Phosphor bronze, coated with tin and backed with an insulating cover 2 of polyvinyl chloride or similar plastics material.
  • the insulating cover is not shown in FIGS. 1 and 2 for reasons of clarity.
  • the cover 2 is wrapped around the longitudinal edges of the clip-as at 3.
  • the member 1 includes a base 4, which is slightly convex towards the open side of the trough, bounded by first and second upstanding sidewalls 5, 6.
  • Each of the sidewalls 5 and 6 is provided with internal embossments 9 correspondinginposition with the upturned tongue portions 7, 8 and formed by pressing in the outer surface ofthe wall by an appropriate amount.
  • the base 4 of the member has-a pair of cruciform slits 41, 42 and the base is pierced to provide a series of upwardly projecting tangs 10, ll, 12, and 13 arrayed around the cruciform slits, which permit each of the tangs 10 to 13 a degree of individual freedom to move plane perpendicular to the plane of the base 4, and in two rows symmetrically positioned about the central longitudinal axis of the base as shown in FIG. 1.
  • Half of eachrow of tangs is of reduced height compared with the other half, the tangs l1 and 12-are initially up to the same height as the tangs l0 and 13, and are then reduced in height by being planished.
  • the cruciform slits form four tongues each containing a tang and allowing each tang an individual spring action.
  • Four triangular portions 14, 15, 16, and 17 are formed symmetrically about the central longitudinal axial plane of the member 1 by cutting the sloping sides of the triangular portions in the base 4 so that they point away from the central transverse axis and bending the triangular portions so formed upwards about the bases of the portions and towards the center of the base 4.
  • the planes of the triangular portions then lie perpendicular to the base plane and to the planes of the sidewalls 5 and 6.
  • the apertures formed in the base portion on the upward bending of the tongue portions 7 and 8 have slightly upturned edges 18, 19 which form deflectable lips.
  • the upstanding walls 5 and 6 are pierced to form a series of tangs20, 21, 22, and 23.
  • the piercings in the base and in the sidewalls provide inwardly projecting tangs spaced apart on the base and in the sidewalls in alternating relation, the tangs in the sidewalls, when the clip is crimped, lying proximate to the tangs in the base-but not directly above them.
  • the tangs 21 and 22 are planished'to reduce their-height to less than that of the tangs 20 and 23. As can be clearly seen in FIG. 3, the tangs which are not planished have a series of sharp points 24. When seen in plan view, the tangs in the sidewalls can be seen to be staggered with respect to the tangs in the base. The reason for this will be detailed below. Also formed in'the walls 5 and'6 are a pair of holes 25 and 26.
  • the insulating cover 2 is pressed into the apertures left by the formation of two of the triangular portions 14, 15, 16, and 17 to hold the cover in position and stop it sliding axially.
  • the cover is pressed into the holes 25 and 26 for the same reason and also to stop the clip sliding upwards out of engagement with the tongues of the cover material pressed into the triangular apertures.
  • Clips according to the invention can be crimped in a crimping machine as described in US. Pat. No. 3,529,342.
  • the wires are laid out parallel to each other and longitudinally along the length of the clip.
  • One wire is positioned between the triangular portions 14, 15, 16, and 17 and the tangs 21 and 23, and the other wire is positioned between the triangular portions 14, 15, 16, and 17 and the tangs 20 and 22.
  • the clip is then crimped by bending the sidewalls 5 and 6 inwardly.
  • the embossments 9 ensure that the tongue portions penetrate the gap between the deflectable lips 18, 19 and that there is sufficient contact movement between the deflectable lips and the wires to allow a good tearing action by the lips on the insulating cover of the wire. This tearing action strips off the insulating cover at the points of contact with the deflectable lips and scrapes clean the wires in preparation for the final contact.
  • the wire On completion of the compression of the clip, the wire is shorn of its insulation at the two points where the wire is trapped between the tongue portions 7 and 8 which are retained in the fully closed position by the embossments 9, and the deflectable lips 18 and 19; by this arrangement the presence of "insulation at those points, which might induce creep and relaxation, is substantially avoided.
  • the deflectable lips 18 and 19 are dimensioned to produce a spring restraint which maintains contact pressure against the effects of creep and relaxation. Further, these deflectable lips also yield as cantilevers to close the gaps between the tongue portions and the deflectable lips, the distances between the edges adjusting themselves according to the diameter of the wire which is trapped.
  • the tangs 13 and 23 behave in a similar manner to the tangs 10 and 20.
  • the tangs 11 and 21, and in the same way, the tangs l2, and 22, also lie in alternate positions in the compressed clip, so that the wire, being forced to adopt a zig-zag path through the clip, is gripped by the tangs.
  • the insulation is not pierced, and the gripping action aids in holding the wire in the clip without any appreciable weakening of the wire itself.
  • the wire which lies along the tangs 11 and 13 is severed to the right of the clip (as seen in FIG. 1); and the wire which lies along the tangs l0 and 12 is severed to the left of the clip (as seen in FIG. 1).
  • the triangular portions 14, 15, 16, and 17 assist in the trapping of the wires in the crimped clip by penetrating the insulation and making contact with the wlres.
  • the sidewalls 5, 6 are bent towards the base 4, to compress the clip about the wires, between a die and moving punch arrangement.
  • the punch compresses the clip against a substantially flat-ended die, shaped to confine the bends in the sidewalls 5, 6 of the clip to very near the base 4 thus minimizing any relaxation after crimping. It is important, therefore, that the material is not thinned at the junction of the sidewalls and the base during the manufacture of the clip. With such an arrangement the clip is heavily compressed near the base 4 so that the material throughout the section yields and the tensile stress from bending is neutralized.
  • the compression of the clip is augmented by the upward convexity of the base portion which causes the sidewalls 5, 6 to make contact via the wires with the base portion before completion of the compression of the clip.
  • the punch itself may contain a concavity, or the die a protuberance, by which higher crimping force may be delivered to the sidewalls 5, 6 and the base 4 of the clip near their junction, than at the free ends of the sidewalls.
  • the force applied to the free ends of the sidewalls is partially relieved, reducing the tendency to crush the wires and the free ends of the sidewalls, whilst sustaining a force on the wires by cantilever action after the crimping pressure is released.
  • the preferred clips of the present invention may be used with aluminum wires as well as with copper wires.
  • the tangs in the sidewalls 5, 6 may be used in conjunction with the tangs in the base only, or with the deflectable lip and tongues only, or with a combination of both of these.
  • a crimping clip for joining together first and second lengths of insulated wire to make electrical connection between the wires, the clip comprising a substantially troughshaped electrically conductive member adapted to receive, along the length thereof, the first and second wires, the said member having a base and first and second upstanding sidewalls, the base containing at least one wire engaging means, characterized in that the sidewalls and the base have piercings at a number of places providing inwardly projecting tangs spaced apart on the base and in the sidewalls, the tangs on the sidewalls, when the clip is crimped, lying proximate to the tangs in the base but not directly above them.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
US87715A 1969-11-13 1970-11-09 Modifications of wire connectors Expired - Lifetime US3662089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5567769 1969-11-13

Publications (1)

Publication Number Publication Date
US3662089A true US3662089A (en) 1972-05-09

Family

ID=10474563

Family Applications (1)

Application Number Title Priority Date Filing Date
US87715A Expired - Lifetime US3662089A (en) 1969-11-13 1970-11-09 Modifications of wire connectors

Country Status (13)

Country Link
US (1) US3662089A (ko)
JP (1) JPS5218916B1 (ko)
BE (1) BE758872R (ko)
CA (1) CA921585A (ko)
CH (1) CH544415A (ko)
DE (1) DE2055583C3 (ko)
ES (1) ES385510A2 (ko)
FR (1) FR2074923A6 (ko)
GB (1) GB1336562A (ko)
IT (1) IT949505B (ko)
NL (1) NL157752B (ko)
SE (1) SE384294B (ko)
ZA (1) ZA707609B (ko)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778887A (en) * 1970-12-23 1973-12-18 Hitachi Ltd Electronic devices and method for manufacturing the same
US3798347A (en) * 1971-01-11 1974-03-19 Post Office Improvements in or relating to a crimping clip for electrically connecting together electrical conductors
US3902004A (en) * 1971-01-11 1975-08-26 Post Office Clips
US4263474A (en) * 1979-05-30 1981-04-21 Amp Incorporated Under carpet cable connector
US5549483A (en) * 1993-07-02 1996-08-27 The Whitaker Corporation Electrical terminal with lead strain relief means
US5605474A (en) * 1995-01-19 1997-02-25 Electric Motion Company, Inc. Electrical harness
EP1063724A1 (de) * 1999-06-24 2000-12-27 Delphi Technologies, Inc. Crimpverbindung
FR2802345A1 (fr) * 1999-12-14 2001-06-15 Yazaki Corp Structure de connexion pour fil electrique et borne, procede de connexion associe, et appareil de connexion de borne
US20140073171A1 (en) * 2012-08-30 2014-03-13 Zierick Manufacturing Corporation Surface mount/through-hole crimp piercing zipcord connector
US20170141488A1 (en) * 2014-06-19 2017-05-18 Fujikura Ltd. Crimp terminal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106707U (ko) * 1990-02-16 1991-11-05

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514528A (en) * 1967-11-13 1970-05-26 Jimmy C Ray Insulation piercing connector for wires
US3553347A (en) * 1967-07-25 1971-01-05 Post Office Wire connectors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3553347A (en) * 1967-07-25 1971-01-05 Post Office Wire connectors
US3514528A (en) * 1967-11-13 1970-05-26 Jimmy C Ray Insulation piercing connector for wires

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778887A (en) * 1970-12-23 1973-12-18 Hitachi Ltd Electronic devices and method for manufacturing the same
US3798347A (en) * 1971-01-11 1974-03-19 Post Office Improvements in or relating to a crimping clip for electrically connecting together electrical conductors
US3902004A (en) * 1971-01-11 1975-08-26 Post Office Clips
US4263474A (en) * 1979-05-30 1981-04-21 Amp Incorporated Under carpet cable connector
US5549483A (en) * 1993-07-02 1996-08-27 The Whitaker Corporation Electrical terminal with lead strain relief means
US5605474A (en) * 1995-01-19 1997-02-25 Electric Motion Company, Inc. Electrical harness
EP1063724A1 (de) * 1999-06-24 2000-12-27 Delphi Technologies, Inc. Crimpverbindung
FR2802345A1 (fr) * 1999-12-14 2001-06-15 Yazaki Corp Structure de connexion pour fil electrique et borne, procede de connexion associe, et appareil de connexion de borne
US6482034B2 (en) 1999-12-14 2002-11-19 Yazaki Corporation Connection structure for electric wire and terminal, connection method therefor and terminal connecting apparatus
US20140073171A1 (en) * 2012-08-30 2014-03-13 Zierick Manufacturing Corporation Surface mount/through-hole crimp piercing zipcord connector
US9004937B2 (en) * 2012-08-30 2015-04-14 Zierick Manufacturing Corporation Surface mount/through-hole crimp piercing zipcord connector
US20170141488A1 (en) * 2014-06-19 2017-05-18 Fujikura Ltd. Crimp terminal
US10128581B2 (en) * 2014-06-19 2018-11-13 Fujikura Ltd. Crimp terminal

Also Published As

Publication number Publication date
BE758872R (fr) 1971-04-16
ZA707609B (en) 1971-09-29
NL7016688A (ko) 1971-05-17
ES385510A2 (es) 1977-08-01
CA921585A (en) 1973-02-20
FR2074923A6 (ko) 1971-10-08
DE2055583B2 (de) 1974-05-30
GB1336562A (en) 1973-11-07
IT949505B (it) 1973-06-11
DE2055583A1 (de) 1971-05-19
JPS5218916B1 (ko) 1977-05-25
NL157752B (nl) 1978-08-15
DE2055583C3 (de) 1975-01-16
CH544415A (de) 1973-11-15
SE384294B (sv) 1976-04-26

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AS Assignment

Owner name: BRITISH TELECOMMUNICATIONS

Free format text: THE BRITISH TELECOMMUNICATIONS ACT 1981 (APPOINTED DAY) ORDER 1981;ASSIGNOR:POST OFFICE;REEL/FRAME:004976/0248

Effective date: 19871028

Owner name: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Free format text: THE BRITISH TELECOMMUNICATIONS ACT 1984. (1984 CHAPTER 12);ASSIGNOR:BRITISH TELECOMMUNICATIONS;REEL/FRAME:004976/0291

Effective date: 19871028

Owner name: BRITISH TELECOMMUNICATIONS

Free format text: THE BRITISH TELECOMMUNICATIONS ACT 1981 (APPOINTED DAY) ORDER 1981;ASSIGNOR:POST OFFICE;REEL/FRAME:004976/0307

Effective date: 19871028

Owner name: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Free format text: THE TELECOMMUNICATIONS ACT 1984 (NOMINATED COMPANY) ORDER 1984;ASSIGNOR:BRITISH TELECOMMUNICATIONS;REEL/FRAME:004976/0276

Effective date: 19871028

Owner name: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Free format text: THE BRITISH TELECOMMUNICATION ACT 1984. (APPOINTED DAY (NO.2) ORDER 1984.;ASSIGNOR:BRITISH TELECOMMUNICATIONS;REEL/FRAME:004976/0259

Effective date: 19871028