US3916085A - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
US3916085A
US3916085A US538795A US53879575A US3916085A US 3916085 A US3916085 A US 3916085A US 538795 A US538795 A US 538795A US 53879575 A US53879575 A US 53879575A US 3916085 A US3916085 A US 3916085A
Authority
US
United States
Prior art keywords
forming portion
ferrule forming
ferrule
wires
insulation
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
US538795A
Other languages
English (en)
Inventor
Wallace A Hansen
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.)
Lear Corp EEDS and Interiors
Original Assignee
Essex International 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
Application filed by Essex International Inc filed Critical Essex International Inc
Priority to US538795A priority Critical patent/US3916085A/en
Priority to CA232,310A priority patent/CA1020247A/en
Application granted granted Critical
Publication of US3916085A publication Critical patent/US3916085A/en
Priority to GB45807/75A priority patent/GB1522326A/en
Priority to DE2550301A priority patent/DE2550301C3/de
Priority to DE7535584U priority patent/DE7535584U/de
Priority to IT52279/75A priority patent/IT1052319B/it
Priority to FR7539518A priority patent/FR2296948A1/fr
Priority to DK594675AA priority patent/DK137478B/da
Priority to JP110576A priority patent/JPS557668B2/ja
Assigned to UNITED TECHNOLOGIES AUTOMOTIVES, INC., A CORP. OF DE reassignment UNITED TECHNOLOGIES AUTOMOTIVES, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ESSEX GROUP, INC.
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

Definitions

  • the connector includes two unitary ferrule forming portions, one mounted inside the other with their sidewalls substantially parallel to and spaced from one another, and connected to one another at one side. Insulation piercing serrations run transversely across the inside of the larger ferrule forming portion and the outside of the smaller ferrule forming portion such that the insulation on a plurality of wires mounted there-between may be pierced when the connector is crimped.
  • the inside of the smaller ferrule forming portion has a plurality of slots running transversely thereacross which act to pierce the insulation of any wires crimped inside.
  • FIGS. and 6 of this patent there is disclosed a connector for splicing together wires of the magnet wire type which comprises an outer sleeve 31 and an inner sleeve 33, the inner sleeve having barbs 37 extending inwardly such that they pierce the magnet wire insulation when the connector is twisted.
  • this connector can splice together more magnet wires than the connector of U.S. Pat. No. 2,800,638, it suffers from the drawback that twisting machinery is required in order to make the proper connection.
  • standard crimping machinery such as that which would be used for the connector of US. Pat. No. 2,800,638 cannot be used.
  • the present invention is directed to an electrical connector adapted for use with standard crimping machinery, which can splice together eight or more magnet wires and one stranded conductor.
  • the present invention comprises a unitary electrical connector formed of two U-shaped ferrule forming portions, one smaller than, and mounted inside the other and with the sidewalls of the two ferrule forming portions being substantially parallel to one another.
  • the inside of the larger portion and the outside of the smaller portion are provided with insulating piercing serrations or grooves running transversely thereacross such that the burrs on the serrations pierce the magnet wire insulation when a wire or wires are crimped between the two ferrule forming portions.
  • the smaller portion has slots formed therein with burrs extending inwardly such that the insulation on any magnet wire or wires crimped in the smaller portion is pierced by the burrs.
  • One advantage of a connector in accordance with the present invention is its ability to be used with conventional crimping machinery. Another distinct advantage of the present invention over the prior art is the ability of the present invention to make an adequate electrical and mechanical connection between eight or more magnet wires and a stranded conductor.
  • FIG. 1 is a perspective view of a splice clip constructed in accordance with the present invention
  • FIG. 2 is a top elevational view of a splice clip in accordance with the present invention, shown in an intermediate stage of manufacture
  • FIG. 3 is a partial enlarged cross sectional view taken along line 33 in FIG. 2.
  • FIG. 4 is a cross sectional view of a connection between a plurality of insulated wires using a splice clip in accordance with the present invention
  • FIG. 5 is a cross sectional view of the crimped connection shown in FIG. 4 taken along line 5-5 of FIG. 4
  • splice clip construction adapted for use with conventional crimping machinery for splicing together eight or more magnet wires and one stranded conductor.
  • This splice clip includes two splice clip or ferrule forming portions, 10 and 12 which are unitary with one another, portion 12 being smaller than portion 10.
  • the larger ferrule forming portion 10 preferably is provided with magnet wire insulation piercing grooves or serrations 14 which run transversely thereacross.
  • the second ferrule forming portion 12 is integrally connected with the first ferrule forming portion 10 by a connecting portion 16, and is arranged inside the first ferrule forming portion 10 with the sidewalls 17 of the second ferrule forming portion 12 being substantially parallel to the sidewalls 15 of the first ferrule forming portion 10.
  • the second ferrule forming portion 12 may be of the same general cross-sectional shape as the first splice clip portion 10 and preferably has a plurality of magnet wire insulation piercing grooves or serrations 18 running transversely around the outside thereof.
  • the small ferrule forming portion 12 is also provided with magnet wire insulation piercing means on the inside surface thereof in the form of staggered perforations 20 which are arranged in rows and which extend across the small splice clip portion 12.
  • the perforations 20 are punched from the outside of the small clip 12 so that burrs are formed on the inside which act to pierce through the insulation on any magnet wires located inside the small ferrule forming portion 12.
  • an essential feature of the present invention is that both the inside and outside surfaces of the small ferrule forming portion 12 as well as the inside of the large ferrule forming portion 10 to be provided with some sort of magnet wire insulation piercing means.
  • the inside surface of the small ferrule forming portion 12 is provided with insulation piercing means in the form of burrs which are formed when the perforations 20 are punched from the outside, it should be noted that the inside surface may be provided with insulation piercing means in the form of serrations running transversely thereacross. Also, the
  • the splice clip in accordance with the present invention, may be stamped from any suitably conductive metal such that the small ferrule forming por- "tion 12 extends from the large ferrule forming portion and is integrally connected thereto by connecting portion 16.
  • the perforations and the serrations 14 and 18 may be made from the same side of the blank prior to bending the blank in its final shape.
  • FIG. 3 Shown in FIG. 3 is an enlarged, cross sectional view of a portion of the small ferrule forming portion 12.
  • the serrations 18 are formed by broaching or milling the blank when it is in a flat state, such as in FIG. 2.
  • Each of the serrations 18 have a flat bottom 22 which forms an obtuse angle with sides 24.
  • a burr is formed at each intersection 26 of side 24 with the upper surface 28 of the blank.
  • Reference numerals are applied to only one serration 18 in FIG.
  • each serration 18 on the small ferrule forming portion 12 and each serration 14 on the large ferrule forming portion 10 will be formed in the same manner such that burrs are formed at the intersection of the sides of the serrations with the upper surface 28 of the blank on which the serration is formed.
  • the perforations 20 are punched in the small ferrule forming portion from the same side as the side on which the serrations 18 are formed. By punching the perforations in the small ferrule forming portion 12 from side 28, a burr will be formed at the intersection of the underside 30 with the perforation 20. It is not essential that the perforations 20 be arranged in the exact pattern shown in the drawings. It is essential that when the splice clip construction of the present invention is crimped closed at lease one, and preferably more than one, perforation intersect a wire located in the small ferrule forming portion. Additionally, the perforations 20 need not necessarily be the same shape as is shown in the drawing FIGURES. These perforations 20 could be round, triangular or any other convenient shape.
  • the wires need not be arranged in the splice clip in any preferrential manner.
  • the magnet wires can all be located in between the large and small ferrule forming portions 10 and 12 with the stranded conductor being located inside the small ferrule forming portion 12.
  • the stranded conductor can be located between the large and small ferrule forming portions 10 and 12 along with one or two magnet wires and the remainder of the magent wires located inside the small ferrule forming portion 12.
  • a plurality of splice clips in accordance with the present invention may be connected together by frangible tabs in strip form and used with conventional crimping machinery. Since a splice clip in accordance with the present invention has an open side and because the wires do not have to be preferentially oriented in the splice clip, the present invention saves time, and therefore costly labor, in relation to the type prior art devices which require that the wires be inserted axially into a connector.
  • the machine operator need only insert a number of the wires laterally into the splice clip between the large ferrule forming portion and the small ferrule forming portion 12, insert the remainder of the wires inside the smaller ferrule forming portion 12, and crimp the splice clip in conventional machinery.
  • the distance between the outside of the small ferrule forming portion 12 and the inside of the large ferrule forming portion 10 at any point should, at the most, only slightly exceed the sum of the diameter of two of the magnet wires to be spliced together.
  • dimensions A, B and C should, at the most, only slightly exceed the sum of the diameter of two of the magnet wires to be spliced together.
  • any of these dimensions substantially exceeds the sum of the diameter of two of the wires to be spliced together, it would be possible for one of the wires to be located in the splice clip in such a position that it did not contact either the inside surface of the large ferrule forming portion 10 or the outside of the small ferrule forming portion 12, and therefore no electrical contact would be made to this wire.
  • dimensions A, B and C do not have to be the same. For instance, dimension A may be made slightly larger so as to allow the wires to be easily inserted into the opening between the two ferrule forming portions, and dimension C may be made smaller so as to allow only one wire between the outside of the small ferrule forming portion 12 and the inside of the large ferrule forming portion 10.
  • FIGS. 4 and 5 there is shown a cross sectional view of a spliced connection between a plurality of magnet wires and a stranded conductor using a splice clip in accordance with the present invention.
  • a plurality of larger gauge magnet wires i.e. 8 gauge, indicated by reference numeral 33, are located between the two ferrule forming portions.
  • Reference numeral 36 designates a stranded conductor which is located inside, the small ferrule forming portion 12.
  • two small gauge magnet wires 34 i.e. 12 gauge, are located one inside and one outside the small ferrule forming portion 12.
  • a crimpable electrical connector for electrically connecting a plurality of electrical conductors together which comprises:
  • first U-shaped ferrule forming portion said first U-shaped ferrule forming portion including first and second spaced apart sidewalls, and inside and outside surfaces on said first ferrule forming portion;
  • a second U-shaped ferrule forming portion said second U-shaped ferrule forming portion including first and second spaced apart sidewalls, inside and outside surfaces on said second U-shaped ferrule forming portion, said second U-shaped ferrule forming portion being located inside said first ferrule forming portion with said first sidewalls on said first and second ferrule forming portions extending substantially parallel to and spaced from one another and said second sidewalls on said first and second ferrule forming portions being unitary with, and extending substantially parallel to and spaced from one another; and
  • a crimpable electrical connector for electrically connecting a plurality of electrical conductors which comprises:
  • insulation piercing means on the inside surface of insulation piercing serrations on the inside surface of said first ferrule forming portion and on the outside surface of said second ferrule forming portion; and insulation piercing perforations in said second ferrule forming portion, said perforations having burrs at the intersection of said perforations with said inside surface of said second ferrule forming portion.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Multi-Conductor Connections (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US538795A 1975-01-06 1975-01-06 Electrical connector Expired - Lifetime US3916085A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US538795A US3916085A (en) 1975-01-06 1975-01-06 Electrical connector
CA232,310A CA1020247A (en) 1975-01-06 1975-07-28 Electrical connector
GB45807/75A GB1522326A (en) 1975-01-06 1975-11-04 Electrical connector
DE7535584U DE7535584U (de) 1975-01-06 1975-11-08 Quetschverbinder
DE2550301A DE2550301C3 (de) 1975-01-06 1975-11-08 Quetschverbinder
IT52279/75A IT1052319B (it) 1975-01-06 1975-11-18 Perfezionamento nei connettori per fili elettrici del tipo a strizione o aggraffatura
FR7539518A FR2296948A1 (fr) 1975-01-06 1975-12-23 Connecteur electrique
DK594675AA DK137478B (da) 1975-01-06 1975-12-30 Sammenklemmeligt elektrisk forbindelsesorgan, samt fremgangsmåde til fremstilling heraf.
JP110576A JPS557668B2 (da) 1975-01-06 1976-01-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US538795A US3916085A (en) 1975-01-06 1975-01-06 Electrical connector

Publications (1)

Publication Number Publication Date
US3916085A true US3916085A (en) 1975-10-28

Family

ID=24148440

Family Applications (1)

Application Number Title Priority Date Filing Date
US538795A Expired - Lifetime US3916085A (en) 1975-01-06 1975-01-06 Electrical connector

Country Status (8)

Country Link
US (1) US3916085A (da)
JP (1) JPS557668B2 (da)
CA (1) CA1020247A (da)
DE (2) DE7535584U (da)
DK (1) DK137478B (da)
FR (1) FR2296948A1 (da)
GB (1) GB1522326A (da)
IT (1) IT1052319B (da)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2359524A1 (fr) * 1976-07-23 1978-02-17 Amp Inc Cosse de connexion
DE3043209A1 (de) * 1980-11-15 1982-06-03 Minnesota Mining and Manufacturing Co., 55133 Saint Paul, Minn. Pressverbinder fuer elektrische leitungen
US5342996A (en) * 1991-11-26 1994-08-30 Sumitomo Wiring Systems, Ltd. Inter-connecting terminal
US6232555B1 (en) * 1998-03-19 2001-05-15 Framatome Connectors International Crimp connection
US8221144B1 (en) 2011-05-03 2012-07-17 Itt Manufacturing Enterprises, Inc. Partial discharge resistant connector
US20150017845A1 (en) * 2013-07-09 2015-01-15 Hitachi Metals, Ltd. Wire connection member, wire connection structure and annular power distribution member
US20170025769A1 (en) * 2013-12-16 2017-01-26 Sumitomo Wiring Systems, Ltd. Terminal for electrical wire connection and electrical wire connection structure of said terminal
US9859624B2 (en) * 2016-04-29 2018-01-02 Deere & Company Electrical connector assembly
DE102008058845B4 (de) 2007-11-27 2019-12-05 Yazaki Corporation Verbindungsaufbau und Verbindungsverfahren für einen Kupferdraht und einen Aluminiumdraht
US20200136273A1 (en) * 2018-10-29 2020-04-30 Delta Plus Co., Ltd. Crimp connection terminal
US20220006207A1 (en) * 2020-07-02 2022-01-06 TE Connectivity Services Gmbh Electrical Terminal For Flat Flexible Cables
US20220294131A1 (en) * 2019-08-28 2022-09-15 Autonetworks Technologies, Ltd. Terminal and wire with terminal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139381U (ja) * 1984-08-10 1986-03-12 清司 細川 墨つぼの係止装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538239A (en) * 1968-12-26 1970-11-03 Amp Inc Grounding wire connector
US3621117A (en) * 1970-08-25 1971-11-16 Bell Telephone Labor Inc Wrapped insulation-piercing connector
US3715705A (en) * 1971-03-29 1973-02-06 Thomas & Betts Corp Multicompartment connector
US3798347A (en) * 1971-01-11 1974-03-19 Post Office Improvements in or relating to a crimping clip for electrically connecting together electrical conductors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3538239A (en) * 1968-12-26 1970-11-03 Amp Inc Grounding wire connector
US3621117A (en) * 1970-08-25 1971-11-16 Bell Telephone Labor Inc Wrapped insulation-piercing connector
US3798347A (en) * 1971-01-11 1974-03-19 Post Office Improvements in or relating to a crimping clip for electrically connecting together electrical conductors
US3715705A (en) * 1971-03-29 1973-02-06 Thomas & Betts Corp Multicompartment connector

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2359524A1 (fr) * 1976-07-23 1978-02-17 Amp Inc Cosse de connexion
DE3043209A1 (de) * 1980-11-15 1982-06-03 Minnesota Mining and Manufacturing Co., 55133 Saint Paul, Minn. Pressverbinder fuer elektrische leitungen
US4442316A (en) * 1980-11-15 1984-04-10 Minnesota Mining And Manufacturing Company Crimp connector for electrical wires
US5342996A (en) * 1991-11-26 1994-08-30 Sumitomo Wiring Systems, Ltd. Inter-connecting terminal
US6232555B1 (en) * 1998-03-19 2001-05-15 Framatome Connectors International Crimp connection
DE102008058845B4 (de) 2007-11-27 2019-12-05 Yazaki Corporation Verbindungsaufbau und Verbindungsverfahren für einen Kupferdraht und einen Aluminiumdraht
US8221144B1 (en) 2011-05-03 2012-07-17 Itt Manufacturing Enterprises, Inc. Partial discharge resistant connector
US20150017845A1 (en) * 2013-07-09 2015-01-15 Hitachi Metals, Ltd. Wire connection member, wire connection structure and annular power distribution member
US9318814B2 (en) * 2013-07-09 2016-04-19 Hitachi Metals, Ltd. Wire connection member, wire connection structure and annular power distribution member
US20170025769A1 (en) * 2013-12-16 2017-01-26 Sumitomo Wiring Systems, Ltd. Terminal for electrical wire connection and electrical wire connection structure of said terminal
US9859624B2 (en) * 2016-04-29 2018-01-02 Deere & Company Electrical connector assembly
US20200136273A1 (en) * 2018-10-29 2020-04-30 Delta Plus Co., Ltd. Crimp connection terminal
US10886637B2 (en) * 2018-10-29 2021-01-05 Delta Plus Co., Ltd. Crimp connection terminal
US20220294131A1 (en) * 2019-08-28 2022-09-15 Autonetworks Technologies, Ltd. Terminal and wire with terminal
US11799216B2 (en) * 2019-08-28 2023-10-24 Autonetworks Technologies, Ltd. Terminal and wire with terminal
US20220006207A1 (en) * 2020-07-02 2022-01-06 TE Connectivity Services Gmbh Electrical Terminal For Flat Flexible Cables
US11296432B2 (en) * 2020-07-02 2022-04-05 TE Connectivity Services Gmbh Electrical terminal for flat flexible cables

Also Published As

Publication number Publication date
DK594675A (da) 1976-07-07
DK137478C (da) 1978-08-21
DE2550301C3 (de) 1979-12-20
JPS5194574A (da) 1976-08-19
CA1020247A (en) 1977-11-01
DE7535584U (de) 1976-05-20
FR2296948B3 (da) 1980-06-06
IT1052319B (it) 1981-06-20
GB1522326A (en) 1978-08-23
DK137478B (da) 1978-03-06
DE2550301B2 (de) 1979-04-26
FR2296948A1 (fr) 1976-07-30
DE2550301A1 (de) 1976-07-08
JPS557668B2 (da) 1980-02-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: UNITED TECHNOLOGIES AUTOMOTIVES, INC., A CORP. OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ESSEX GROUP, INC.;REEL/FRAME:004933/0578

Effective date: 19880223