US3380141A - Contact terminal extraction tool - Google Patents

Contact terminal extraction tool Download PDF

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Publication number
US3380141A
US3380141A US526533A US52653366A US3380141A US 3380141 A US3380141 A US 3380141A US 526533 A US526533 A US 526533A US 52653366 A US52653366 A US 52653366A US 3380141 A US3380141 A US 3380141A
Authority
US
United States
Prior art keywords
terminal
tool
section
bore
connector
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
US526533A
Other languages
English (en)
Inventor
Rofer David
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
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 Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Priority to US526533A priority Critical patent/US3380141A/en
Priority to DE19671640514 priority patent/DE1640514C3/de
Priority to GB5314/67A priority patent/GB1130985A/en
Priority to FR93948A priority patent/FR91907E/fr
Priority to SE1673/67A priority patent/SE302798B/xx
Priority to BE693891D priority patent/BE693891A/xx
Application granted granted Critical
Publication of US3380141A publication Critical patent/US3380141A/en
Assigned to ITT CORPORATION reassignment ITT CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/0447—Hand tools therefor
    • 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
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/22—Hand tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49876—Assembling or joining with prestressing of part by snap fit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53274—Means to disassemble electrical device
    • Y10T29/53283—Means comprising hand-manipulatable implement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53909—Means comprising hand manipulatable tool
    • Y10T29/53943—Hand gripper for direct push or pull

Definitions

  • This invention relates to electrical connectors and more particularly to a unique tool for removing a certain type of connector contact terminal from an insulation body.
  • One means of removing such a unwired terminal is to insert the removal tool of the type described in the above referenced patent to release the locking means and then extract the terminal by pushing on the opposite end of the terminal.
  • One difiiculty of such approach is that the connector must be separated from its mating member and hence when remated circuitry checkout for each terminal may be required. This problem can be quite significant when it is realized that an individual connector may have a very large number of terminals.
  • a third difiiculty of this method is that certain terminals and the surrounding insulation body are of such construction that the terminal disappears beneath the face of the insulator before it is completely accessible from the other side of the connector. Hence, it is necessary to insert a suitable tool into the bore surrounding the terminal to apply further axial force which is awkward and inconvenient with miniature components.
  • the contact terminal extraction tool of the invention includes a tubular extraction member, an ejector rod slidably mounted within the forward portion of the tubular member and a plunger for axially moving the ejector rod.
  • the tubular extraction member has a forward cylindrical tip section for freely receiving the outer end of an unwired terminal that is releasably lockable in a bore within an electrical connector body, the bore being sized such that the tip section of the extraction member can fit between the terminal and the bore.
  • the extraction member further has a terminal gripping section joining the tip section and has an inner diameter which tapers from the tip section to a diameter smaller than the tip section and is also slightly smaller than the outer diameter of the rear portion of the contact terminal.
  • the gripping section made of radially resilient material may be wedged onto the outer end of the terminal to grip the terminal while the outer surface of the cylindrical tip section is releasing the contact from the bore.
  • the terminal can then be removed from the connector by withdrawing the tool, and the ejector rod may be moved axially by the plunger to force the terminal from the gripping section of the tubular extraction member.
  • FIG. 1 is a sectionalized side elevational view of the extraction tool of the invention
  • FIG. 2 is a sectionalized view of the forward portion of the tool as it is being inserted onto the rear of a contact terminal;
  • FIG. 3 shows the arrangement of FIG. 2 with the tool in the fully inserted position
  • FIG. 4 is a view of the arrangement showing the tool and the terminal being withdrawn from the connector.
  • the unique tool incorporates only three elements, a tubular extraction member 10, an ejector rod 12 and a plunger 14.
  • the member 10 has several sections of different diameters, including a cylindrical forward tip section 16, an adjoining section which tapers from the cylindrical tip sec. tion to a cylindrical section of smaller diameter, the forward portion of the smaller diameter cylindrical section taken with the tapered section forming a gripping section 18, a central transitional section 20 of still smaller diameter and a rear plunger receiving section 22 having an enlarged diameter.
  • FIGS. 2-4 there is illustrated a portion of an electrical connector having contact terminals of the so-called rear release type, that is they are adapted to be inserted and withdrawn from the rear of the connector.
  • the connector includes an insulation body 24 having a bore 26 extending therethrough from a front face 24a to a rear face 24b. Within the rear portion of the bore there is captivated a retaining clip 28 having one or more inwardly extending resilient fingers 28a which engage the rear surface of a flange 30a formed on a contact terminal 30.
  • the contact terminal 30 is inserted into the bore 26 through the rear face 24b past the resilient retaining fingers 28a until the flange 30a has been seated on the bore shoulder 26a which permits the fingers to snap inwardly to secure the terminal 30 within the connector body. It should be understood that while only a single terminal is illustrated, a typical connector of this type is made on a very small scale and incorporates a large number of individual terminals.
  • the rear wire receiving socket 30b of terminal 30 is crimped or otherwise connected to a conducting wire when it is inserted into the connector 24.
  • a tubular tool of the type disclosed in the cited Johnson patent having an axial split, may be placed over the wire and inserted into the bore to release the retaining fingers 28a and the tool and terminal may then be withdrawn by pulling on the wire.
  • an unwired terminal is positioned in a particular connector.
  • a particular application for one of these connectors may not require immediate use for all of the terminal receiving bores, but yet it is necessary to close the unused bores by inserting a terminal therein to seal the connector. At a future dateit may be desirable to remove the unwired terminal and connect it to a wire.
  • tubular member is adapted to be inserted into the bore 26 to surround the wire receiving socket 30b of terminal 30.
  • the forward tip section 16 of the member is given an inner diameter a few thousandths larger than that of the socket so that section 16 will freely slip over the terminal, and the outer diameter of the tip section 16 and the adjacent gripping section 18 are such that the extraction member will fit within bore 26 and retaining clip 28.
  • the axial length of section 16 is less than that of socket 30b and is preferably equal to about one half of the axial length of the rear portion of terminal 30. Consequently, further insertion of the tool causes the cylindrical portion of gripping section 18 to be frictionally wedged onto the terminal to the position shown in FIG.
  • the effective length of the gripping section 18, including the tapered portion is roughly equal to or no more than that of the tip section.
  • the gripping section 18 of the extraction member must be made of a material which is radially resilient.
  • the extraction member should be axially rigid to withstand the pushing and pulling forces. Accordingly, the extraction member is preferably made of a thermosetting plastic or other material having similar characteristics. While it is, perhaps, only necessary that the gripping section be made of such material, from a cost and ease of manufacture standpoint it is desirable .4 that the entire unit be molded of such material.
  • the cylindrical portion of the gripping section is preferably from .001-.00S" smaller in diameter than the socket 30b, and because of its inherent resilience, will expand by at least this much when wedged onto the socket 30b.
  • the ejector rod 12 secured by a suitable extension 12a to plunger 14 is completely withdrawn to the position shown in FIG. 2, wherein the shoulder formed by the diameter difference between sections 12a and the main portion of the rod engages the shoulder 20a adjacent the reduced diameter section 20 of the extraction member.
  • the axial length of the rod section 12a is slightly greater than that of the wire receiving socket of the terminal, and the axial length of extraction member 10 from its forward tip to the shoulder 20a is slightly greater than the length of the rear portion of the terminal and the main portion of the ejector rod 12.
  • the ejector rod is relatively slender, it is fabricated from a metallic alloy to have adequate durability and to be of sufficient columnar strength to preclude its buckling or bending. Note that in this position, the forward end of the rod is approximately flush with the front of the tool tip and that the length of the plunger is slightly longer than the length of the plunger receiving section 22 so that the head of the plunger is spaced from the rear of the extraction member to prevent pinching of the operators hand.
  • a contact terminal extraction tool for use in connection with an unwired contact terminal of the type that is releasably lockable in a bore within an electrical connector body, and its outer end is spaced from the surrounding bore, said tool comprising:
  • tubular extraction member having a tip section for insertion in said bore and for freely receiving the outer end of said terminal
  • a terminal gripping section joining said tip section and including a section having a tapered bore of gradually diminishing internal diameter which merges with a cylindrical bore having an internal diameter smaller than the tip section diameter;
  • said gripping section being radially resilient so that the cylindrical bore portion thereof may be wedged onto the outer end of said terminal to grip the terminal as the outer surface of said tip section is releasing the terminal from said bore;
  • an ejector rod slidably mounted within said tubular member for engaging the end of said terminal after it has beeen removed from said connector body and for axially forcing the terminal from the grip of said gripping section to eject the terminal from said tubular member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
US526533A 1963-06-27 1966-02-10 Contact terminal extraction tool Expired - Lifetime US3380141A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US526533A US3380141A (en) 1966-02-10 1966-02-10 Contact terminal extraction tool
DE19671640514 DE1640514C3 (de) 1966-02-10 1967-02-02 Werkzeug zum Herausziehen und Einführen von Kontaktelementen
GB5314/67A GB1130985A (en) 1966-02-10 1967-02-03 Contact terminal extraction tool
FR93948A FR91907E (fr) 1963-06-27 1967-02-07 Outil d'introduction et d'enlèvement pour borne de contact, particulièrement pour connecteurs électriques
SE1673/67A SE302798B (no) 1966-02-10 1967-02-07
BE693891D BE693891A (no) 1966-02-10 1967-02-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US526533A US3380141A (en) 1966-02-10 1966-02-10 Contact terminal extraction tool

Publications (1)

Publication Number Publication Date
US3380141A true US3380141A (en) 1968-04-30

Family

ID=24097734

Family Applications (1)

Application Number Title Priority Date Filing Date
US526533A Expired - Lifetime US3380141A (en) 1963-06-27 1966-02-10 Contact terminal extraction tool

Country Status (4)

Country Link
US (1) US3380141A (no)
BE (1) BE693891A (no)
GB (1) GB1130985A (no)
SE (1) SE302798B (no)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460229A (en) * 1966-12-01 1969-08-12 Mc Donnell Douglas Corp Insertion tool and follower
US3538585A (en) * 1968-01-12 1970-11-10 Robert B Hendry Contact insertion-removal tool
US3541661A (en) * 1968-03-06 1970-11-24 Pyle National Co Contact extraction tool
US3672024A (en) * 1970-10-30 1972-06-27 Itt Connector clip removal tool
US3995363A (en) * 1974-12-23 1976-12-07 International Telephone And Telegraph Corporation Connector member and extraction tool
US4398333A (en) * 1981-10-06 1983-08-16 Instrumentation Laboratory Inc. Manipulating tool
US4494305A (en) * 1982-11-26 1985-01-22 International Telephone And Telegraph Corporation Contact extraction tool
US4860440A (en) * 1988-06-06 1989-08-29 Randy Garbrick Tool and method for assisting the extraction of a wire from a connector
US4864719A (en) * 1987-04-24 1989-09-12 Amp Incorporated Tool for removing electrical contacts
US4864721A (en) * 1987-04-24 1989-09-12 Rudy Jr William J Method for removing an electrical contact from a housing
US4912841A (en) * 1988-10-06 1990-04-03 Burndy Corporation Dense wire bundle extracting tool
US5040289A (en) * 1989-09-29 1991-08-20 Amp Incorporated Extraction tool
US5266047A (en) * 1992-04-13 1993-11-30 The Whitaker Corporation Electrical connector assembly
US5636436A (en) * 1994-12-28 1997-06-10 Martin; Douglas A. Extended coaxial cable ejection device
US6067705A (en) * 1997-12-02 2000-05-30 Lucent Technologies, Inc. Header contact pin extraction tool and method of pin extraction
US6094785A (en) * 1997-06-30 2000-08-01 Motorola, Inc. Snap apparatus for housings
US6098276A (en) * 1998-05-12 2000-08-08 Itt Manufacturing Enterprises, Inc. Contact front extraction tool
US20060270256A1 (en) * 2005-05-24 2006-11-30 Hon Hai Precision Ind. Co., Ltd. Contact extraction tool
US20100290932A1 (en) * 2009-05-15 2010-11-18 Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd) Motor and compressor with the same
US20160233603A1 (en) * 2015-02-09 2016-08-11 Yazaki Corporation Terminal group and connector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075283A (en) * 1959-12-30 1963-01-29 Burroughs Corp Ejecting tool
US3210836A (en) * 1963-05-21 1965-10-12 United Carr Inc Electrical component remover and/or inserter
US3210832A (en) * 1964-04-24 1965-10-12 George H Kalen Insertion-removal tool
US3222766A (en) * 1963-07-01 1965-12-14 Union Aircraft Co Terminal pin removing tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3075283A (en) * 1959-12-30 1963-01-29 Burroughs Corp Ejecting tool
US3210836A (en) * 1963-05-21 1965-10-12 United Carr Inc Electrical component remover and/or inserter
US3222766A (en) * 1963-07-01 1965-12-14 Union Aircraft Co Terminal pin removing tool
US3210832A (en) * 1964-04-24 1965-10-12 George H Kalen Insertion-removal tool

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460229A (en) * 1966-12-01 1969-08-12 Mc Donnell Douglas Corp Insertion tool and follower
US3538585A (en) * 1968-01-12 1970-11-10 Robert B Hendry Contact insertion-removal tool
US3541661A (en) * 1968-03-06 1970-11-24 Pyle National Co Contact extraction tool
US3672024A (en) * 1970-10-30 1972-06-27 Itt Connector clip removal tool
US3995363A (en) * 1974-12-23 1976-12-07 International Telephone And Telegraph Corporation Connector member and extraction tool
US4398333A (en) * 1981-10-06 1983-08-16 Instrumentation Laboratory Inc. Manipulating tool
US4494305A (en) * 1982-11-26 1985-01-22 International Telephone And Telegraph Corporation Contact extraction tool
US4864719A (en) * 1987-04-24 1989-09-12 Amp Incorporated Tool for removing electrical contacts
US4864721A (en) * 1987-04-24 1989-09-12 Rudy Jr William J Method for removing an electrical contact from a housing
US4860440A (en) * 1988-06-06 1989-08-29 Randy Garbrick Tool and method for assisting the extraction of a wire from a connector
US4912841A (en) * 1988-10-06 1990-04-03 Burndy Corporation Dense wire bundle extracting tool
US5040289A (en) * 1989-09-29 1991-08-20 Amp Incorporated Extraction tool
US5266047A (en) * 1992-04-13 1993-11-30 The Whitaker Corporation Electrical connector assembly
US5636436A (en) * 1994-12-28 1997-06-10 Martin; Douglas A. Extended coaxial cable ejection device
US6094785A (en) * 1997-06-30 2000-08-01 Motorola, Inc. Snap apparatus for housings
US6067705A (en) * 1997-12-02 2000-05-30 Lucent Technologies, Inc. Header contact pin extraction tool and method of pin extraction
US6098276A (en) * 1998-05-12 2000-08-08 Itt Manufacturing Enterprises, Inc. Contact front extraction tool
US20060270256A1 (en) * 2005-05-24 2006-11-30 Hon Hai Precision Ind. Co., Ltd. Contact extraction tool
US7698810B2 (en) * 2005-05-24 2010-04-20 Hon Hahi Precision Ind. Co., Ltd. Connector removal system
US20100290932A1 (en) * 2009-05-15 2010-11-18 Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd) Motor and compressor with the same
US8039751B2 (en) * 2009-05-15 2011-10-18 Kobe Steel, Ltd. Motor and compressor with the same
US20160233603A1 (en) * 2015-02-09 2016-08-11 Yazaki Corporation Terminal group and connector
US9537278B2 (en) * 2015-02-09 2017-01-03 Yazaki Corporation Terminal group and connector

Also Published As

Publication number Publication date
DE1640514A1 (de) 1970-10-22
GB1130985A (en) 1968-10-16
DE1640514B2 (de) 1975-06-19
BE693891A (no) 1967-08-10
SE302798B (no) 1968-08-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ITT CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION;REEL/FRAME:004389/0606

Effective date: 19831122