US3089532A - Dies for crimping electrical connectors - Google Patents

Dies for crimping electrical connectors Download PDF

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Publication number
US3089532A
US3089532A US10330A US1033060A US3089532A US 3089532 A US3089532 A US 3089532A US 10330 A US10330 A US 10330A US 1033060 A US1033060 A US 1033060A US 3089532 A US3089532 A US 3089532A
Authority
US
United States
Prior art keywords
die
dies
crimping
electrical connectors
ferrule
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
US10330A
Other languages
English (en)
Inventor
Norwood C Graeff
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 to NL261431D priority Critical patent/NL261431A/xx
Priority to NL121045D priority patent/NL121045C/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US10330A priority patent/US3089532A/en
Priority to DEA36711A priority patent/DE1129200B/de
Priority to GB5218/61A priority patent/GB898428A/en
Priority to FR853438A priority patent/FR1282395A/fr
Priority to CH209261A priority patent/CH397032A/de
Application granted granted Critical
Publication of US3089532A publication Critical patent/US3089532A/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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/058—Crimping mandrels
    • 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

Definitions

  • crimping dies have had serious disadvantages, particularly when used on large-sized conductors, -i.e., 4/0 and larger. It has been observed that it has been particularly difiieult to crimp terminals of this size because of the difficulty in the uniform reduction of wires, breakthrough of the tin plate, formation of metal flash, and deformation of the indenter. It is an object of this invention to provide a crimping die for electrical connectors which will eliminate these undesirable characteristics. It is also an object of this invention to provide a crimping die which has a rounded crimping nest and a crimping indenter which is round in the middle and flat on the outer edges.
  • FIGURE 1 is a perspective view of a set of dies embodying the principles of this invention
  • FIGURE 2 is a front plan view of the dies shown in FIGURE 1 with a ferrule-type connector inserted therebetween;
  • FIGURE 3 is a sectional view taken through plane 33 of FIGURE 4, illustrating the dies and connectors of FIGURE 2 in crimped relationship;
  • FIGURE 4 is a top plan view showing an electrical connector crimped onto a conductor with the die members shown in phantom;
  • FIGURE 5 is a view similar to FIGURE 4 showing a different embodiment
  • FIGURE 6 is a side view of FIGURE 5.
  • the die set is comprised of a lower die It and an upper die 12 (FIGURE 1).
  • the bottom die may be considered a nest and has an arcuate working surface 14 which has a radius larger than the ferrule member 16.
  • the working surface has a pair of opposed side surfaces 18 and 20.
  • a die holding member 22 is secured to the die to mount the die in a crimping tool.
  • the upper die may be termed an indenter.
  • the die surface has an inner radial surface 24 which is equal to the working surface 14.
  • a pair of lands 26 and 28 project outwardly from the arcuate surface 24.
  • the width of the indenting die is slightly less than the distance between the opposed working surfaces 18 and 2% of the nest. Thus the indenting die fits snugly into the nest (FIGURE 3).
  • Another pair of lands 3d and 32 extends from the sides of the indenting die, and in the assassa Fatented May 14, 1963 closed position abut the top of the nest to prevent overcrimping.
  • the conductor When it is desired to crimp a ferrule and conductor in the dies, the conductor is inserted into the ferrule and the ferrule placed between the dies. The dies are brought together until the lands 3i) and 32 abut the top of the working surfaces 18 and 20 (FIGURE 3). As shown in FIGURE 3, the fiat land surfaces and 28 cause deformation of the outer strands of the conductor within the ferrule. The round working surface 24 causes the same deformation of wire strands in the central portion of the conductor. The over-all effect is to provide a crimped section 4 having a uniform deformation of wire strands throughout the crimped cross-section.
  • the smooth, gentle design of the indenting die from the flat land portions 26 and 23 through the larger arcuate working surface 24 prevents the crimping pressure from springing the U-shaped indenting die and causing it to fracture after repeated crimping. Additionally, the tin plate on the outside of the erimpe-d ferruie is not punctured or disturbed. The configuration of the crimped section does not provide any flashed surfaces of metal which would be harmful in an electrical connection.
  • FIGURES 5 and 6 The form or embodiment of the invention shown in FIGURES 5 and 6 is similar to that shown in FIGURES 1 and 4.
  • a pair of axially disposed die surfaces is provided which effect spaced, crimped sections 42, 44.
  • the crimp may be made in two stages, making each crimp separately.
  • the metal at each end of the crimped connection is extruded, causing a considerable increase in the tensile strength of the connection.
  • a die set for crimping ferrule-type connectors onto conductors including: a first nesting die having a concave arcuate bottom working surface and oppose-d side surfaces tangent to the extremities and forming a continuation of said arcuate working surface, a second indenting die having opposed side surfaces narrower than the opposed side surfaces of the nesting die, an intermediate concave arcuate working surface between the opposed side surfaces of the indenting die, and a pair of parallel lands on the indenting die adapted to relieve stress concentration on the indenting die and distribute the crimping force more evenly through the connector, said lands being coplanar and disposed so that one land is on each side of the arcuate working surface and extends from an edge of the arcuate working surface to one of the opposed side surfaces, whereby the connector may be crimped onto the conductor Without the formation of sharp side edges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
US10330A 1960-02-23 1960-02-23 Dies for crimping electrical connectors Expired - Lifetime US3089532A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL261431D NL261431A (de) 1960-02-23
NL121045D NL121045C (de) 1960-02-23
US10330A US3089532A (en) 1960-02-23 1960-02-23 Dies for crimping electrical connectors
DEA36711A DE1129200B (de) 1960-02-23 1961-02-11 Pressgesenk zum Andruecken von Verbindungs-klemmen mit zylindrischem Zwingenteil undVerbindungsklemme
GB5218/61A GB898428A (en) 1960-02-23 1961-02-13 Improvements in die sets for crimping electrical connectors and in electrical connections made with such die sets
FR853438A FR1282395A (fr) 1960-02-23 1961-02-21 Outils pour sertir des viroles
CH209261A CH397032A (de) 1960-02-23 1961-02-22 Verfahren zum Andrücken eines zylindrischen Zwingenteiles an ein elektrisches Kabel, Presse zur Durchführung des Verfahrens und nach dem Verfahren hergestellte Verbindung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10330A US3089532A (en) 1960-02-23 1960-02-23 Dies for crimping electrical connectors

Publications (1)

Publication Number Publication Date
US3089532A true US3089532A (en) 1963-05-14

Family

ID=21745236

Family Applications (1)

Application Number Title Priority Date Filing Date
US10330A Expired - Lifetime US3089532A (en) 1960-02-23 1960-02-23 Dies for crimping electrical connectors

Country Status (5)

Country Link
US (1) US3089532A (de)
CH (1) CH397032A (de)
DE (1) DE1129200B (de)
GB (1) GB898428A (de)
NL (2) NL121045C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003078861A1 (de) * 2002-03-15 2003-09-25 Ac-Tec Gmbh Verfahren zur herstellung einer drahtseil-pressverbindung
CN107026379A (zh) * 2017-06-05 2017-08-08 芜湖侨云友星电气工业有限公司 一种线束端子压接头
USD990999S1 (en) * 2021-06-24 2023-07-04 Hanlong Industrial Co., Ltd. Crimping die

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2242280A (en) * 1939-02-24 1941-05-20 Adams Alfred Henry Swedging tool
US2426492A (en) * 1943-11-15 1947-08-26 Burndy Engineering Co Inc Compression die
US2534867A (en) * 1945-01-11 1950-12-19 Western Electric Co Method of applying binding elements to cords
US2732615A (en) * 1956-01-31 sandberg
US2802257A (en) * 1949-02-01 1957-08-13 Amp Inc Method of forming an electrical connection
US2837135A (en) * 1953-11-03 1958-06-03 Amp Inc Rotary turret head for crimping tools
US2965147A (en) * 1954-07-06 1960-12-20 Amp Inc Crimping methods and apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732615A (en) * 1956-01-31 sandberg
US2242280A (en) * 1939-02-24 1941-05-20 Adams Alfred Henry Swedging tool
US2426492A (en) * 1943-11-15 1947-08-26 Burndy Engineering Co Inc Compression die
US2534867A (en) * 1945-01-11 1950-12-19 Western Electric Co Method of applying binding elements to cords
US2802257A (en) * 1949-02-01 1957-08-13 Amp Inc Method of forming an electrical connection
US2837135A (en) * 1953-11-03 1958-06-03 Amp Inc Rotary turret head for crimping tools
US2965147A (en) * 1954-07-06 1960-12-20 Amp Inc Crimping methods and apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003078861A1 (de) * 2002-03-15 2003-09-25 Ac-Tec Gmbh Verfahren zur herstellung einer drahtseil-pressverbindung
EP1353088A1 (de) * 2002-03-15 2003-10-15 ABCO-Hydraulik GmbH Verfahren zur Herstellung einer Drahtseil-Pressverbindung
US20060156532A1 (en) * 2002-03-15 2006-07-20 Andreas Kock Method of production of a cable press connection
CN107026379A (zh) * 2017-06-05 2017-08-08 芜湖侨云友星电气工业有限公司 一种线束端子压接头
USD990999S1 (en) * 2021-06-24 2023-07-04 Hanlong Industrial Co., Ltd. Crimping die

Also Published As

Publication number Publication date
CH397032A (de) 1965-08-15
GB898428A (en) 1962-06-06
NL261431A (de)
DE1129200B (de) 1962-05-10
NL121045C (de)

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