US3521224A - Electrical connector having a ferrule provided with overlapping portions - Google Patents

Electrical connector having a ferrule provided with overlapping portions Download PDF

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Publication number
US3521224A
US3521224A US656497A US3521224DA US3521224A US 3521224 A US3521224 A US 3521224A US 656497 A US656497 A US 656497A US 3521224D A US3521224D A US 3521224DA US 3521224 A US3521224 A US 3521224A
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US
United States
Prior art keywords
ferrule
sleeve
electrical connector
connector
wire
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
US656497A
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English (en)
Inventor
Martinus Johannes Albe Spooren
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
Application filed by AMP Inc filed Critical AMP Inc
Application granted granted Critical
Publication of US3521224A publication Critical patent/US3521224A/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
    • H01R4/10—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
    • H01R4/20—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 using a crimping sleeve
    • H01R4/203—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 using a crimping sleeve having an uneven wire-receiving surface to improve the contact
    • H01R4/206—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 using a crimping sleeve having an uneven wire-receiving surface to improve the contact with transversal grooves or threads

Definitions

  • an electrical connector which comprises a tubular electrical ferrule, for example of copper and which has been rolled from an elongate metal blank.
  • the longitudinal edges of the blank form a seam extending longitudinally of the ferrule, these edges being arranged in butt relationship so that the ferrule has an overall smooth outer surface.
  • a sleeve of plastic insulating material surrounds the ferrule, the insulating material being such that the ferrule can be crimped to a wire inserted thereinto by applying crimping pressure to the insulating sleeve.
  • the connector is normally crimped to the wire by the application of a substantially even crimping pressure about the circumference of the insulating sleeve.
  • a seamless copper sleeve is preferably interposed between the ferrule and the insulating sleeve.
  • the longitudinal marginal portions of the blank from which the ferrule is formed are arranged in overlapping relationship, so that the wall thickness of the ferrule is doubled over a portion of its circumference for example over about a quarter of its circumference. It has been found that where the ferrule is formed in this way, the connector can be crimped to provide an improved connection between the wire and the connector.
  • the sleeve, the ferrule and the wire sizes and the applied crimping pressure need not however be as accurately predetermined, as in the case of the known connector.
  • An object of the invention is to provide a ferrule of an electrical connector with means provided thereby for increasing the tensile strength when the ferrule is crimped onto an electrical wire.
  • Another object is the provision of a ferrule of an electrical connector which is provided with overlapping sections which provides an improved connection between the ferrule and a ⁇ w're.
  • a further object is to provide a ferrule of an electrical connector with double wall thickness over a portion of the circumference thereof.
  • FIG. 1 is a cross-sectional view of a ferrule for crimping to an electrical wire
  • FIG. 2 is an axial sectional view of an electrical connector, including the ferrule of FIG. 1; and 1 FIG. 3 is an enlarged cross-sectional view through the connector when crimped to a wire.
  • the connector comprises a crimping ferrule 1 having wiregripping serrations 2, a seamless copper sleeve 3 surrounding the ferrule 1 and having a bell mouth 4, and an outer insulating sleeve 5 surrounding the sleeve 3, the sleeve 5 being of tough flexible plastic material, for example nylon or polyvinylchloride.
  • the ferrule 1 has been rolled from an elongate sheet metal blank, the longitudinal marginal portions 6 of the blank being arranged in overlapping rleationship, so that the ferrule 1 is of double wall thickness over about a quarter of its circumference.
  • the connector is intended to be crimped to a multi stranded or solid insulated electrical wire.
  • An end of the electrically-conductive core 7 of the wire which is shown diagrammatically in broken lines in FIG. 1, is first stripped of insulation and is inserted into the connector through the bell mouth 4 so that the stripped end of the core lies within the ferrule 1, the mouth 4 surrounding the terminal part of the insulation.
  • a pair of crimping dies (not shown) are now applied to the connector to exert upon the sleeve 5 a substantially even pressure about the circumference of the sleeve 5, so that the ferrule 1 is tightly compressed about the core 7 as shown in FIG. 3, the core (which is shown diagrammatically in FIG.
  • the effect of arranging the marginal portions 6 in overlapping relationship as described above is to increase the tensile strength of the connection between the wire and the connector by at least 50% where for example the wire is of 1 mm. in cross-section, as compared with the case where the ferrule is of the same outside diameter but does not have overlapping marginal portions.
  • An electrical connector comprising a tubular ferrule rolled from an elongate sheet metal blank and provided with longitudinal marginal portions extending axially of the ferrule so that the wall thickness of the ferrule is doubled over substantially a quarter of its circumference, a sleeve of plastic material surrounding said ferrule and through which the ferrule can be crimped to a wire inserted into the ferule, the marginal portions of the ferrule being free to slide with respect to one another circumferentially of the ferrule, and a metal sleeve interposed between said sleeve of plastic material and said ferrule.
  • An electrical connector comprising a tubular ferrule rolled from an elongate sheet metal blank and provided with longitudinal marginal portions extending axially of the ferrule so that the wall thickness of the ferrule is doubled over at least 90 of its circumference, the marginal portions being free for relative sliding movement circumferentially of the ferrule, a sleeve of plastic material surrounding said ferrule and through which the ferrule can be crimped to a wire inserted into the ferrule, a metal sleeve being interposed between the sleeve of plastic material and the ferrule, and serrations being provided on an inside surface of the ferrule.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Multi-Conductor Connections (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US656497A 1966-07-19 1967-07-27 Electrical connector having a ferrule provided with overlapping portions Expired - Lifetime US3521224A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6610131A NL6610131A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1966-07-19 1966-07-19

Publications (1)

Publication Number Publication Date
US3521224A true US3521224A (en) 1970-07-21

Family

ID=19797213

Family Applications (1)

Application Number Title Priority Date Filing Date
US656497A Expired - Lifetime US3521224A (en) 1966-07-19 1967-07-27 Electrical connector having a ferrule provided with overlapping portions

Country Status (6)

Country Link
US (1) US3521224A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1615625C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES341887A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1124230A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL6610131A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE330403B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641911A (en) * 1984-10-09 1987-02-10 General Motors Corporation Electrical connector having a funnel wrap wire crimp barrel
US4932906A (en) * 1988-12-16 1990-06-12 Amp Incorporated Electrical contact terminal
US4950186A (en) * 1988-12-16 1990-08-21 Amp Incorporated Electrical contact terminal
US4951389A (en) * 1989-05-31 1990-08-28 Amp Incorporated Method for making a wire barrel terminal
US5017161A (en) * 1988-06-21 1991-05-21 Legrand Electric terminal connector
US5203726A (en) * 1992-02-11 1993-04-20 Molex Incorporated Insulated electrical terminal and method of fabricating same
US5522739A (en) * 1994-04-15 1996-06-04 Panduit Corp. Insulated terminal with integral dual flared barrel
US6086433A (en) * 1997-09-18 2000-07-11 Contact Gmbh & Co. Kg Plug socket for electrically connecting a cable or the like having a stripped wire portion with a flat plug
WO2009016429A3 (en) * 2007-07-30 2009-03-26 Framatome Connectors Int Crimpable connector contact assembly for cable connector, cable connector and method for manufacturing thereof
US20090218134A1 (en) * 2006-05-05 2009-09-03 Dieter Stroh Connecting Passage Node or End Node and Method for Production Thereof
WO2015150464A1 (en) * 2014-04-01 2015-10-08 Te Connectivity Amp España, S.L.U. Shielded telecommunications connector

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347713A (en) * 1941-03-19 1944-05-02 Burndy Engineering Co Inc Tool installed connector and process for its installation
GB585670A (en) * 1942-11-14 1947-02-18 Aircraft Marine Prod Inc Improvements in electrical connectors
US2763849A (en) * 1952-03-01 1956-09-18 Aircraft Marine Prod Inc Electrical connector
US2786192A (en) * 1952-04-09 1957-03-19 Amp Inc Electrical connector
CA744073A (en) * 1966-10-04 Amp Incorporated Electrical connector pins
US3286223A (en) * 1964-05-18 1966-11-15 Itt Ferrule construction and a method for producing same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA744073A (en) * 1966-10-04 Amp Incorporated Electrical connector pins
US2347713A (en) * 1941-03-19 1944-05-02 Burndy Engineering Co Inc Tool installed connector and process for its installation
GB585670A (en) * 1942-11-14 1947-02-18 Aircraft Marine Prod Inc Improvements in electrical connectors
US2763849A (en) * 1952-03-01 1956-09-18 Aircraft Marine Prod Inc Electrical connector
US2786192A (en) * 1952-04-09 1957-03-19 Amp Inc Electrical connector
US3286223A (en) * 1964-05-18 1966-11-15 Itt Ferrule construction and a method for producing same

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641911A (en) * 1984-10-09 1987-02-10 General Motors Corporation Electrical connector having a funnel wrap wire crimp barrel
US5017161A (en) * 1988-06-21 1991-05-21 Legrand Electric terminal connector
US4932906A (en) * 1988-12-16 1990-06-12 Amp Incorporated Electrical contact terminal
US4950186A (en) * 1988-12-16 1990-08-21 Amp Incorporated Electrical contact terminal
US4951389A (en) * 1989-05-31 1990-08-28 Amp Incorporated Method for making a wire barrel terminal
US5203726A (en) * 1992-02-11 1993-04-20 Molex Incorporated Insulated electrical terminal and method of fabricating same
US5522739A (en) * 1994-04-15 1996-06-04 Panduit Corp. Insulated terminal with integral dual flared barrel
US6086433A (en) * 1997-09-18 2000-07-11 Contact Gmbh & Co. Kg Plug socket for electrically connecting a cable or the like having a stripped wire portion with a flat plug
US8288653B2 (en) * 2006-05-05 2012-10-16 Schunk Sonosystems Gmbh Connecting passage node or end node and method for production thereof
US20090218134A1 (en) * 2006-05-05 2009-09-03 Dieter Stroh Connecting Passage Node or End Node and Method for Production Thereof
WO2009016429A3 (en) * 2007-07-30 2009-03-26 Framatome Connectors Int Crimpable connector contact assembly for cable connector, cable connector and method for manufacturing thereof
US20100184340A1 (en) * 2007-07-30 2010-07-22 Bernardus Paagman Crimpable connector contact assembly for cable connector, cable connector and method for manufacturing thereof
WO2015150464A1 (en) * 2014-04-01 2015-10-08 Te Connectivity Amp España, S.L.U. Shielded telecommunications connector
CN106797077A (zh) * 2014-04-01 2017-05-31 康普连通西班牙公司 屏蔽式通信连接器
US9979133B2 (en) 2014-04-01 2018-05-22 CommScope Connectivity Spain, S.L. Shielded telecommunications connector
CN106797077B (zh) * 2014-04-01 2019-09-20 康普连通西班牙公司 屏蔽式通信连接器
US10498088B2 (en) 2014-04-01 2019-12-03 CommScope Connectivity Spain, S.L. Shielded telecommunications connector
US10958018B2 (en) 2014-04-01 2021-03-23 CommScope Connectivity Spain, S.L. Shielded telecommunications connector
US11476622B2 (en) 2014-04-01 2022-10-18 CommScope Connectivity Spain, S.L. Shielded telecommunications connector

Also Published As

Publication number Publication date
ES341887A1 (es) 1968-07-16
GB1124230A (en) 1968-08-21
DE1615625A1 (de) 1970-05-27
NL6610131A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1968-01-22
SE330403B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1970-11-16
DE1615625C3 (de) 1974-09-26
DE1615625B2 (de) 1973-08-30

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