US3824557A - Electrical contact - Google Patents
Electrical contact Download PDFInfo
- 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
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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
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
A free-standing, guided entry metallic one-piece female spring contact is provided which has particular utility in conjunction with integrated circuits. The contact is intended to be mounted, together with a multiplicity of similar contacts, in plated holes in a printed circuit board. The contact is formed to define two opposing spring leaves which receive the pins or tab-like male contacts, for example, of an integrated circuit device. The contact also defines an integral apertured crown over the spring leaves which serves as a guide for the male contact.
Description
United States Patent 1191 11 1 3,824,557
Mallon July 16, 1974 ELECTRICAL CONTACT 3,733,574 5/1973 Scoville et al 339/17 c [75] Inventor: Marvin C. Mallon, Canoga Park, FOREIGN PATENTS OR APPLICATIONS Callf- 2,036,990 11/1971 Germany 339/253 R 73 AssigneeZ Interdyne p y, v Nuys, 54,552 lO/l949 France 339/258 R Calif.
, Primary Examiner-Henry C. Sutherland [22] Flledi' July 1973 Assistant ExaminerWilliam F. Pate, Ill [2 App], 379 105 Attorney, Agent, or Firm-William W. Haefliger Related [1.8. Application Data [57] 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. V As mentioned above, 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, as previously pointed out, 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. v
The'construction of the Contact of the present invention, as will be described, is such that the contact may be installed economically in a circuit board using semiautomatic insertion equipment. When thecontact is installed, 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. Moreover, 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.
DRAWING DESCRIPTION as received in a plated hole in a usual printed circuit board.
DETAILED DESCRIPTION As shown in the drawing, 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. At a point directly above the square shank 18, 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.
Directly above the wedge-shaped portion 20, the contact 14 is formed into a pair of opposing strips 22 and 24, these strips being folded back on themselves,
as shown in the drawing, to form two opposing spring leaves. 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. Y
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.
It will be appreciated that although a particular embodiment of the invention has been shown and described, modifications may be made. It is intended in the following claims to cover such embodiments as fall within the spirit and scope of the invention.
I claim:
1. 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,
c. an L-shaped flat metallic strip having an elongated portion extending upwardly from the shank and a laterally forwardly extending crown portion defining a central guide opening, and
d. a pair of like, V-shaped flat metallic spring strips through the crown at the opposite side of said each having an outer leg extending upward y board and into position between said free ends.
toward the crown Pomon and an Inner g extend 2. The contact of claim 1 and including said circuit s downwardly y from the ciown PQ and board defining said bore engaged by said corners of the Sald legs mergmg at a sharp fold m relanvely close 5 shank short portion, said outer leg lower extensions proximity to siilld F saidlegs.having having lower edges located adjacent said board. rearwardly projecting lower extensions Joined to 3. The contact of claim 1 wherein said central guide said elongated portion of the L-shaped strip near a Said Short portion of the shank and Said inner egg open of the crown has rectangular configuration, the
tapering downwardly and toward one another crown top surface extent bounding said opening tapertween said outer legs to define closely spaced free mg downwflrdly gulde 531d P Inserted dflwnwardly ends located closer to said extensions than to said roug Said opening.
crown for contacting a pin guidably inserted
Claims (3)
1. 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 wrapping, b. the shank also having a relatively short portion above said main extent, said short portion having a polygonal cross section larger than the cross section 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, c. an L-shaped flat metallic strip having an elongated portion extending upwardly from the shank and a laterally forwardly extending crown portion defining a central guide opening, and d. a pair of like, V-shaped flat metallic spring strips each having an outer leg extending upwardly toward the crown portion and an inner leg extending downwardly away from the crown portion, and said legs merging at a sharp fold in relatively close proximity to said crown, said outer legs having rearwardly projecting lower extensions joined to said elongated portion of the L-shaped strip near said short portion of the shank, and Said inner legs tapering downwardly and toward one another between said outer legs to define closely spaced free ends located closer to said extensions than to said crown for contacting a pin guidably inserted through the crown at the opposite side of said board and into position between said free ends.
2. The contact of claim 1 and including said circuit board defining said bore engaged by said corners of the shank short portion, said outer leg lower extensions having lower edges located adjacent said board.
3. The contact of claim 1 wherein said central guide open of the crown has rectangular configuration, the crown top surface extent bounding said opening tapering downwardly to guide said pin inserted downwardly through said opening.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00379105A US3824557A (en) | 1971-08-24 | 1973-07-13 | Electrical contact |
FR7413018A FR2237330B3 (en) | 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) |
FR (1) | FR2237330B3 (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2656736A1 (en) * | 1975-12-16 | 1977-07-07 | Litton Industries Inc | LOET-FREE ELECTRICAL CONTACT |
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 (en) * | 2013-06-26 | 2014-12-31 | 阿维科斯公司 | Single element wire to board connector |
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 (en) * | 2014-04-29 | 2015-11-11 | 阿维科斯公司 | Interlocking poke home contact |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR54552E (en) * | 1946-05-20 | 1950-05-04 | United Carr Fastener Corp | Contact members, in particular for lamp sockets |
US3054165A (en) * | 1957-04-09 | 1962-09-18 | Bell Telephone Labor Inc | Modifying the terminations of electrical components |
DE2036990A1 (en) * | 1969-07-29 | 1971-02-11 | Fernere, Rene, Bourg la Reine (Frankreich) | Electrical multiple connector |
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 |
-
1973
- 1973-07-13 US US00379105A patent/US3824557A/en not_active Expired - Lifetime
-
1974
- 1974-04-12 FR FR7413018A patent/FR2237330B3/fr not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR54552E (en) * | 1946-05-20 | 1950-05-04 | United Carr Fastener Corp | Contact members, in particular for lamp sockets |
US3054165A (en) * | 1957-04-09 | 1962-09-18 | Bell Telephone Labor Inc | Modifying the terminations of electrical components |
DE2036990A1 (en) * | 1969-07-29 | 1971-02-11 | Fernere, Rene, Bourg la Reine (Frankreich) | Electrical multiple connector |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4148547A (en) * | 1975-08-06 | 1979-04-10 | Bunker Ramo Corporation | Female electrical contact |
DE2656736A1 (en) * | 1975-12-16 | 1977-07-07 | Litton Industries Inc | LOET-FREE ELECTRICAL CONTACT |
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 (en) * | 2013-06-26 | 2014-12-31 | 阿维科斯公司 | Single element wire to board connector |
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 (en) * | 2014-04-29 | 2015-11-11 | 阿维科斯公司 | Interlocking poke home contact |
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 |
---|---|
FR2237330B3 (en) | 1977-02-18 |
FR2237330A1 (en) | 1975-02-07 |
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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 |