US3824557A - Electrical contact - Google Patents

Electrical contact Download PDF

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Publication number
US3824557A
US3824557A US00379105A US37910573A US3824557A US 3824557 A US3824557 A US 3824557A US 00379105 A US00379105 A US 00379105A US 37910573 A US37910573 A US 37910573A US 3824557 A US3824557 A US 3824557A
Authority
US
United States
Prior art keywords
shank
contact
crown
short portion
bore
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
US00379105A
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English (en)
Inventor
M Mallon
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.)
MIDWRSTERN INSTRUMENTS NC TULSA OK A CORP OF Co
Original Assignee
INTERDYNE Co
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 INTERDYNE Co filed Critical INTERDYNE Co
Priority to US00379105A priority Critical patent/US3824557A/en
Priority to FR7413018A priority patent/FR2237330B3/fr
Application granted granted Critical
Publication of US3824557A publication Critical patent/US3824557A/en
Assigned to MIDWRSTERN INSTRUMENTS, NC., TULSA, OK. A CORP. OF CO. reassignment MIDWRSTERN INSTRUMENTS, NC., TULSA, OK. A CORP. OF CO. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERDYNE COMPANY
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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes

Definitions

  • ABSTRACT A free-standing, guided entry metallic one-piece female spring contact is provided which has particular 3 Claims, 1 Drawing Figure 7 1 ELECTRICAL CONTACT BACKGROUND OF THE INVENTION
  • Integrated circuits are being used in increasing numbers in electronic equipment. Integrated circuits usually take the form of a block in which the integrated electronic circuitry and active electronic elements are located, and contacts protruding outwardly from the block. These contacts usually havea pin or tab-like configuration.
  • the contacts of the present" invention may be conveniently mounted in plated holes in the circuit board on which the integrated circuit is to be mounted, and the contacts constructed in accordance with the invention provide female connectors for the male contacts from the integrated circuit.
  • the contacts not only establish electrical connection between the integrated circuit and the external circuitry of the circuit board, but they also serve as a means for supporting and mounting the integrated circuit on the circuit board.
  • a feature of the contact of the invention is the provision of a guide for each Contact. This guide serves to direct the entry of the male contacts of the integrated circuit block between the corresponding spring leaves of the Contact, and into electrical engagement with the contact.
  • The'construction of the Contact of the present invention is such that the contact may be installed economically in a circuit board using semiautomatic insertion equipment.
  • its contour provides a gas-tight, reliable solderless joint to the printed circuit board.
  • the spring leaves formed by the Contact of the invention provide a lowresistance, high-pressure engagement with the integrated circuit contact.
  • the guided-entry element of the contact of the invention safeguards the contact and assures the most reliable interface between the integrated circuit and the contact.
  • the contact constructed in accordance with the invention is received in a plated hole 10 in a printed circuit board 12. It will be understood that a multiplicity of similar contacts may be so received, and arranged in parallel rows, so as to receive the pin-like or tab-like contacts of an associated integrated circuit module.
  • the contact itself as shown in the drawing, is designated generally as 14, and it comprises an integral socket portion 16, and a shank portion 18, having a one piece, integral, off-set construction.
  • the shank 18 of the contact in the illustrated embodiment is square in cross-section and designed for' wire-wrap applications.
  • a tapered section 20 acts as a wedge when the contact is inserted in the plated hole 10 in the 2 printed circuit board 12.
  • a gas-tight reliable joint is thereby formed at the interface of the four corners of the wedge-shaped portion 25 of the contact and the electrically conductive bore of the hole 10. In this way, a gas-tight, reliable, solderless connection is made between the contact 14 and the Circuitry on the printed circuit board 12.
  • the contact 14 is formed into a pair of opposing strips 22 and 24, these strips being folded back on themselves,
  • the leaves receive the pin-like or tab-like Contact of the integrated circuit, or other module, which makes intimate electrical engagement with the two leaves 22 and 24, and which isfirmly supported between the leaves.
  • a further strip-like portion 26 is formed integral with the shank 18 adjacent to the wedge-like portion 20, the latter strip-like portion of the contact extending up adjacent to the leaves 22 and 24, and having a bent-over crown section'extending over the top of the leaves.
  • the crown section has an opening which, in the illustrated embodiment is rectangular and indented as shown. The indentations serve to further guide the male tab of the integrated circuit module. This opening also serves as a rigid support for the Contact thereby preventing abuse of the spring leaves 22 and 24 below the contact, and insuring a well centered interface between the integrated circuit module and the contact
  • the contact 14 may be composed of beryllium copper, or other appropriate resilient electrically conductive material.
  • the invention provides, therefore, an improved onepiece guided entry free-standing electrical contact which serves as an improved and positive electrical connector for an integrated circuit module, or the like.
  • the contact of the invention not only is relatively simple and inexpensive to construct, but also may be inserted easily and by semi-automatic insertion machines into the printed circuit boards.
  • An electrical contact adapted to be supported on a circuit board having a bore, comprising a. an upright, elongated shank having main extent freely receivable through said bore to project at one side of said board, said shank main extent having a main polygonal cross section to define corners for engagement with the turns of a wire wrap- P 8 b. the shank also having a relatively short portion above said main extent, said short portion having a polygonal cross section larger than the crosssection of the shank main extent and defining corners spaced apart to tightly engage said bore when said short portion extends therein, there being at least two downwardly tapering walls on the shank for merging said short portion thereof with said main extent,

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
US00379105A 1971-08-24 1973-07-13 Electrical contact Expired - Lifetime US3824557A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US00379105A US3824557A (en) 1971-08-24 1973-07-13 Electrical contact
FR7413018A FR2237330B3 (en:Method) 1971-08-24 1974-04-12

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17440171A 1971-08-24 1971-08-24
US00379105A US3824557A (en) 1971-08-24 1973-07-13 Electrical contact

Publications (1)

Publication Number Publication Date
US3824557A true US3824557A (en) 1974-07-16

Family

ID=26870171

Family Applications (1)

Application Number Title Priority Date Filing Date
US00379105A Expired - Lifetime US3824557A (en) 1971-08-24 1973-07-13 Electrical contact

Country Status (2)

Country Link
US (1) US3824557A (en:Method)
FR (1) FR2237330B3 (en:Method)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2656736A1 (de) * 1975-12-16 1977-07-07 Litton Industries Inc Loetfreier elektrischer kontakt
US4071290A (en) * 1976-09-27 1978-01-31 Bell Telephone Laboratories, Incorporated Unitary fuse clip having a wire wrap terminal
US4148547A (en) * 1975-08-06 1979-04-10 Bunker Ramo Corporation Female electrical contact
US4192565A (en) * 1976-10-28 1980-03-11 Richard Gianni Multi-level socket for an integrated circuit
US4359258A (en) * 1980-01-14 1982-11-16 Trw Inc. Electrical connector
US4379611A (en) * 1980-11-03 1983-04-12 Hughes Aircraft Company Connector with low force socket contact having an integral hood
US4466684A (en) * 1981-12-17 1984-08-21 Texas Instruments Incorporated Low insertion force connector
US4606599A (en) * 1981-12-17 1986-08-19 Texas Instruments Incorporated Low insertion force connector
US4678262A (en) * 1984-05-08 1987-07-07 Allied Corporation Contact element
US4934967A (en) * 1987-12-15 1990-06-19 Amp Incorporated Socket for pin grid array
US5709574A (en) * 1996-08-30 1998-01-20 Autosplice Systems Inc. Surface-mountable socket connector
US6478598B1 (en) * 2001-12-07 2002-11-12 Hon Hai Precision Ind. Co., Ltd. Electrical connector having improved contacts
US20050136710A1 (en) * 2003-12-20 2005-06-23 Lear Corporation Female Terminal for Inserting in a Printed Circuit Board
US7503814B1 (en) * 2008-04-16 2009-03-17 Jui-Hsiang Lin Terminal structure of female connector
US7581965B1 (en) 2008-05-01 2009-09-01 Commscope, Inc. Of North Carolina Bottom entry interconnection element for connecting components to a circuit board
US8446120B2 (en) 2011-05-19 2013-05-21 Black & Decker Inc. Electronic switching module for a power tool
US8721376B1 (en) * 2012-11-01 2014-05-13 Avx Corporation Single element wire to board connector
US20140287627A1 (en) * 2013-03-15 2014-09-25 Amphenol Corporation Mating interfaces for high speed high density electrical connectors
CN104253326A (zh) * 2013-06-26 2014-12-31 阿维科斯公司 单一元件线对板连接器
US20150229069A1 (en) * 2014-02-10 2015-08-13 Avanced-Connectek Inc. Terminal for an electrical connector
US9136641B2 (en) 2012-11-01 2015-09-15 Avx Corporation Single element wire to board connector
CN105048134A (zh) * 2014-04-29 2015-11-11 阿维科斯公司 互锁懒式接头
US10218107B2 (en) 2014-10-06 2019-02-26 Avx Corporation Caged poke home contact
US10320096B2 (en) 2017-06-01 2019-06-11 Avx Corporation Flexing poke home contact
US10608501B2 (en) 2017-05-24 2020-03-31 Black & Decker Inc. Variable-speed input unit having segmented pads for a power tool
US10707598B2 (en) * 2018-01-23 2020-07-07 Tyco Electronics (Shanghai) Co. Ltd. Conductive terminal and connector assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR54552E (fr) * 1946-05-20 1950-05-04 United Carr Fastener Corp Organes de contact, notamment pour douilles de lampes
US3054165A (en) * 1957-04-09 1962-09-18 Bell Telephone Labor Inc Modifying the terminations of electrical components
DE2036990A1 (de) * 1969-07-29 1971-02-11 Fernere, Rene, Bourg la Reine (Frankreich) Elektrische Vielfachsteckverbindung
US3609640A (en) * 1969-11-17 1971-09-28 Amp Inc Precision receptacle alignment system
US3663931A (en) * 1970-11-25 1972-05-16 Collins Radio Co Pin and socket contact electrical interconnect system
US3733574A (en) * 1971-07-23 1973-05-15 Vector Electronic Co Miniature tandem spring clips

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR54552E (fr) * 1946-05-20 1950-05-04 United Carr Fastener Corp Organes de contact, notamment pour douilles de lampes
US3054165A (en) * 1957-04-09 1962-09-18 Bell Telephone Labor Inc Modifying the terminations of electrical components
DE2036990A1 (de) * 1969-07-29 1971-02-11 Fernere, Rene, Bourg la Reine (Frankreich) Elektrische Vielfachsteckverbindung
US3609640A (en) * 1969-11-17 1971-09-28 Amp Inc Precision receptacle alignment system
US3663931A (en) * 1970-11-25 1972-05-16 Collins Radio Co Pin and socket contact electrical interconnect system
US3733574A (en) * 1971-07-23 1973-05-15 Vector Electronic Co Miniature tandem spring clips

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148547A (en) * 1975-08-06 1979-04-10 Bunker Ramo Corporation Female electrical contact
DE2656736A1 (de) * 1975-12-16 1977-07-07 Litton Industries Inc Loetfreier elektrischer kontakt
US4071290A (en) * 1976-09-27 1978-01-31 Bell Telephone Laboratories, Incorporated Unitary fuse clip having a wire wrap terminal
US4192565A (en) * 1976-10-28 1980-03-11 Richard Gianni Multi-level socket for an integrated circuit
US4359258A (en) * 1980-01-14 1982-11-16 Trw Inc. Electrical connector
US4379611A (en) * 1980-11-03 1983-04-12 Hughes Aircraft Company Connector with low force socket contact having an integral hood
US4466684A (en) * 1981-12-17 1984-08-21 Texas Instruments Incorporated Low insertion force connector
US4606599A (en) * 1981-12-17 1986-08-19 Texas Instruments Incorporated Low insertion force connector
US4678262A (en) * 1984-05-08 1987-07-07 Allied Corporation Contact element
US4934967A (en) * 1987-12-15 1990-06-19 Amp Incorporated Socket for pin grid array
US5709574A (en) * 1996-08-30 1998-01-20 Autosplice Systems Inc. Surface-mountable socket connector
US6478598B1 (en) * 2001-12-07 2002-11-12 Hon Hai Precision Ind. Co., Ltd. Electrical connector having improved contacts
US20050136710A1 (en) * 2003-12-20 2005-06-23 Lear Corporation Female Terminal for Inserting in a Printed Circuit Board
US7503814B1 (en) * 2008-04-16 2009-03-17 Jui-Hsiang Lin Terminal structure of female connector
US7581965B1 (en) 2008-05-01 2009-09-01 Commscope, Inc. Of North Carolina Bottom entry interconnection element for connecting components to a circuit board
US9508498B2 (en) 2011-05-19 2016-11-29 Black & Decker, Inc. Electronic switching module for a power tool
US9401250B2 (en) 2011-05-19 2016-07-26 Black & Decker, Inc. Electronic switching module for a power tool
US10651706B2 (en) 2011-05-19 2020-05-12 Black & Decker Inc. Control unit for a power tool
US10256697B2 (en) 2011-05-19 2019-04-09 Black & Decker Inc. Electronic switching module for a power tool
US9000882B2 (en) 2011-05-19 2015-04-07 Black & Decker Inc. Electronic switching module for a power tool
US8446120B2 (en) 2011-05-19 2013-05-21 Black & Decker Inc. Electronic switching module for a power tool
US9406457B2 (en) 2011-05-19 2016-08-02 Black & Decker Inc. Electronic switching module for a power tool
US9166325B2 (en) 2012-11-01 2015-10-20 Avx Corporation Single element wire to board connector
US9768527B2 (en) 2012-11-01 2017-09-19 Avx Corporation Single element wire to board connector
US8721376B1 (en) * 2012-11-01 2014-05-13 Avx Corporation Single element wire to board connector
US9136641B2 (en) 2012-11-01 2015-09-15 Avx Corporation Single element wire to board connector
US9466893B2 (en) 2012-11-01 2016-10-11 Avx Corporation Single element wire to board connector
US10116067B2 (en) 2012-11-01 2018-10-30 Avx Corporation Single element wire to board connector
US20140287627A1 (en) * 2013-03-15 2014-09-25 Amphenol Corporation Mating interfaces for high speed high density electrical connectors
US9419360B2 (en) * 2013-03-15 2016-08-16 Amphenol Corporation Mating interfaces for high speed high density electrical connectors
CN104253326A (zh) * 2013-06-26 2014-12-31 阿维科斯公司 单一元件线对板连接器
US9413094B2 (en) * 2014-02-10 2016-08-09 Advanced-Connectek Inc. Terminal for an electrical connector
US20150229069A1 (en) * 2014-02-10 2015-08-13 Avanced-Connectek Inc. Terminal for an electrical connector
CN105048134A (zh) * 2014-04-29 2015-11-11 阿维科斯公司 互锁懒式接头
US9306297B2 (en) * 2014-04-29 2016-04-05 Avx Corporation Interlocking poke home contact
US10218107B2 (en) 2014-10-06 2019-02-26 Avx Corporation Caged poke home contact
US10608501B2 (en) 2017-05-24 2020-03-31 Black & Decker Inc. Variable-speed input unit having segmented pads for a power tool
US10320096B2 (en) 2017-06-01 2019-06-11 Avx Corporation Flexing poke home contact
US10566711B2 (en) 2017-06-01 2020-02-18 Avx Corporation Flexing poke home contact
US10707598B2 (en) * 2018-01-23 2020-07-07 Tyco Electronics (Shanghai) Co. Ltd. Conductive terminal and connector assembly

Also Published As

Publication number Publication date
FR2237330A1 (en:Method) 1975-02-07
FR2237330B3 (en:Method) 1977-02-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MIDWRSTERN INSTRUMENTS, NC., TULSA, OK. A CORP. OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERDYNE COMPANY;REEL/FRAME:004149/0566

Effective date: 19830603