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Publication numberUS3246279 A
Publication typeGrant
Publication dateApr 12, 1966
Filing dateAug 19, 1963
Priority dateAug 19, 1963
Publication numberUS 3246279 A, US 3246279A, US-A-3246279, US3246279 A, US3246279A
InventorsJoseph A Storcel
Original AssigneeAmphenol Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electrical connectors
US 3246279 A
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Description  (OCR text may contain errors)

J. A. STORCEL ELECTRICAL CONNECTORS Filed Aug. 19, 1963 Aprl 12, 1966 United States Patent O 3,246,279 ELECTRICAL CONNECTORS Joseph A. Storcel, North Riverside, Ill., assiguor to Amphenol Corporation, a corporation of Delaware Filed Aug. 19, 1963, Ser. No. 302,989 1 Claim. (Ci. 339-17) The present invention relates to electrical connectors and particularly to printed circuit connections. In such connectors, the receptacle is designed to receive the leading edge of a printed circuit board having conductive segments disposed therealong, so that the board itself functions as the plug of the connector.

It is among the primary objects of the invention to provide a printed circuit receptacle of improved design, capable of supporting the circuit board mated therewith in a manner to provide better electrical contact, better physical support and consequently greater reliability than obtainable with printed circuit receptacles of types heretofore commonly employed.

A further object of the invention is to provide an improvide receptacle for a printed circuit connector wherein the several parts are so arranged and related that the leading edge of the circuit board is accurately guided into engagement with the individual contacts of the connector so that any likelihood of damage to the parts in couplng or uncoupling is substantially reduced. Also, greater uniformity of insertion and withdrawal forces is obtained.

A still further object of the invention is to provide a unique and simplified arrangement for polarizing a printed circuit connector so that the printed circuit card or board may be quickly, easily and Conveniently inserted, yet will not be received by the receptacle if improperly oriented or in reverse position.

The foregoing and other related objects are accomplished according to the present invention by an electrical connector as illustrated in the drawings attached to and forming a part of this specification, wherein:

FIGURE l is a perspective view of the receptacle of a printed circuit connector constructed in accordance with the present teachings;

FIGURE 2 is a cross-sectional view taken substantially on the plane of the line 2-2 of FIGURE l;

FIGURE 3 is a cross-sectional view taken substantially on the plane of the line 3-3 of FIGURE 2; and

FIGURE 4 is a cross-sectional view similar to FIG- URE 2, but showing a slightly modified form of the invention.

The connector receptacle, generally indicated at 19 in the drawngs, includes an elongated body portion 11 extending between a pair of oppositely disposed vertical uprights 12 and 13. Mounting pads 14 and 15 are ordinarily provided and these are illustrated as including screw holes 16 and 17, as is common practice in the connector art.

The connector body or central portion 11 includes a relatively long, narrow, deep contact channel 18, arranged to receive the leading edge of a mating circuit board which may be of any conventional Construction. As illustrated, the contact channel 18 is centrally disposed in the connector body and extends the entire distance between the opposed inner faces 21 and 22 of the uprights 12 and 13, respectively. The contact channel 18 may be of any conventional conformation, but as illustrated it is provided with multiple pairs of contact recesses 23 and 24, each extending from the upper surface of the body portion 11 to the bottom of the channel 18, so that each pair of recesses 23, 24 coact to receive a metallic contact of the tuning-fork" type, as best shown at 25 in FIGURE 3.

The conventional tuning-fork contact illustrated includes a pair of tines 26 and 27, the lower end of each of which is joined to a terminal shank 28 extending through an aperture in the bottom of the channel so that the shank 28 is exposed for connection to the circuit wiring. The tines 26 and 27 each have an inwardly projecting hump or button 29 projecting slightly into the channel 18 so that they may engage opposed conductive metallic strips carried on one or both faces of a single or double-sided printed circuit board, which may be of the shape illustrated at 31 (FIGURE 3). It is understood, of course, that the leading edge 32 of the board 31 will be provided with an aligned series of conductive surfaces 33, generally in somewhat parallel arrangement. These serve as mating contacts with the tuning fork contacts 25 of the receptacle.

The uprights 12 and 13 are each provided with a guide slot, as illustrated at 34 and 35, the slots being positioned centrally of uprights 12 and 13 respectively, and extendng from the top of each upright partially or entirely to the contact channel 18 of the receptacle. The slots may be of the same length, if desired, but it has been found advantageous to make them of unequal lengths for purposes of polarizing the connectors so that the receptacle will not accept its mating printed circuit board unless properly oriented. Thus, as illustrated in FIGURE 2, the slot 34 intersects at the bottom 36 of channel 18, while the slot 35 termnates at 37. Thus, a circuit board provided with one straight edge 38 and having a notch 39 at the opposite corner may be readily inserted if properly oriented, but will not be received in the receptacle if reversed.

If desired, polarization may be equally well accomplished by other dimensional variations as to placement of slots, width thereof in relation to thickness of the board, or by forming the upright members of the receptacle of unequal length, as illustrated at 41 and 42 of FIGURE 4, even though the slots 43 and 44 extend the full length of each upright. Thus the opposite sides 46 and 47 of the circuit board 45 may be notched at 48 and 49 respectively, with the notch 48 of a length corresponding to the depth or" slot 43 and the length of the notch 49 corresponding to the depth of slot 44.

From the foregoing it will be apparent that by the utilization of the teachings of the present invention a connector receptacle has been provided which not only serves as an adequate support for a printed circuit board inserted therein, but also simultaneously functions as a guide whereby the perfect mating of the Contacting members is assured. In addition, the receptacle is so designed as to properly polarize the connector and prevent the board from being improperly inserted. Straightline couplng motion is accomplished by the combination of guides between the board and receptacle, increasing the reliability of electrical Contacting members and increasing uniformity of insertion and withdrawal forces. Also, by providing circuit boards and receptacles having difierent combinations of guide slot dimensions, combined with corresponding notches or other dimensional variations in the circuit board of each, it is quite practicable to key a group of connectors in a manner such that any given circuit board will be received only in the specific receptacle designed for it.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

An electrical connector adapted to receive printed circuit boards and comprisng, in combination, an elongated receptacle body formed of molded dielectric material and having a long, narrow, deep, central contact channel;

said contact channel being open at the top, and having a pair of opposite side walls;

a plurality of conductive contacts spaced-apart from each other along said channel; a pair of uprights perpendicular to the recept-acle body said uprights being carried on the receptacle body adjacent the opposite ends of the central contact channel and molded integrally with said body; each of said uprights having a narrow vertical guide slot along its inner surface Whereby the open sides of said guide Slots in said pair of uprights face each other; said guide slots each lying in the plane of the central contact channel; and each slot extending from the top of one of the uprghts at least part of the way toward said contact channel, whereby the upper end of said Slots may coact to receive opposite edges of a circuit board entering the receptacle and thus guide the leading edge of the board into the contact channel thereof; 20

the slot in one of the uprights terminating at a point above the contact channel whereby the slots in said uprights are of unequal vertical dimensions, whereby said Slots coact with dmentional variation of the opposite edges of the circut board for polarizing the receptacle With respect to the board.

References Cited by the Examiner UNITED STATES PATENTS 2,189,874 2/1940 Ziganke 339--65 2,765,450 10/1956 Richardson 339--176 3,008,113 11/1961 Johnso 339-17 3,065,447 11/1962 Maurer 339-184 3,154,646 10/1964 Ju'ca et al. 339-22 X 3,l93,791 7/1965 Boek et al. 339-176 FOREIGN PATENTS .330,621 6/ 1958 Switzerland.

PATRICK A. CLIFFORD, Primary Examiner.

ALFRED S. TRASK, Assistant Exam'ner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2189874 *Feb 11, 1938Feb 13, 1940Lorenz C AgElectron tube mounting
US2765450 *Oct 20, 1952Oct 2, 1956Richardson SidneyMultiple electrical sockets
US3008113 *Jul 30, 1958Nov 7, 1961IbmElectrical interconnecting and mounting device for printed-circuit boards
US3065447 *Jan 13, 1960Nov 20, 1962Amp IncConnector assembly
US3154646 *Feb 27, 1962Oct 27, 1964Telemecanique ElectriqueDistributing line and connector arrangements for electric power supply systems
US3193791 *Dec 26, 1961Jul 6, 1965Sperry Rand CorpLayered circuit holder and receptacle
CH330621A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3300596 *Apr 2, 1965Jan 24, 1967Teletype CorpCharacter generation matrix
US3432795 *Feb 23, 1967Mar 11, 1969Sylvania Electric ProdElectrical connector having facile engagement means
US3480904 *Aug 21, 1967Nov 25, 1969Amp IncMounting means for an electrical connector
US3550062 *Dec 26, 1967Dec 22, 1970Gen ElectricConnector and mounting device for printed wiring boards
US3638166 *Mar 12, 1969Jan 25, 1972Schaltbau GmbhConnector element
US3680038 *Apr 28, 1970Jul 25, 1972Teradyne IncElectrical connector with vibration resistance
US4239323 *Feb 8, 1979Dec 16, 1980Bell Telephone Laboratories, IncorporatedCircuit board keying arrangement
US4377315 *Feb 9, 1981Mar 22, 1983Bell Telephone Laboratories, IncorporatedCircuit board keying arrangement
US4542441 *Feb 25, 1985Sep 17, 1985United Technologies CorporationCard guide
US4850891 *Apr 4, 1988Jul 25, 1989Augat Inc.Memory module socket
US4850892 *Feb 3, 1988Jul 25, 1989Wang Laboratories, Inc.Connecting apparatus for electrically connecting memory modules to a printed circuit board
US4973270 *May 4, 1990Nov 27, 1990Amp IncorporatedCircuit panel socket with cloverleaf contact
US5176523 *Aug 9, 1991Jan 5, 1993Foxconn International, Inc.Stackable memory card connector
US5244403 *Jul 1, 1992Sep 14, 1993Augat Inc.Electronic component socket with external latch
US5383792 *Mar 4, 1993Jan 24, 1995The Whitaker CorporationInsertable latch means for use in an electrical connector
US5419712 *Mar 10, 1994May 30, 1995Augat Inc.Edge card interconnection system
US5423691 *Aug 6, 1993Jun 13, 1995Augat Inc.Edge card interconnection system
US5449297 *May 12, 1994Sep 12, 1995Augat Inc.Edge card connector
US6031725 *Oct 28, 1997Feb 29, 2000Dell U.S.A., L.P.Method and apparatus for mounting a microprocessor module in a computer
US6036551 *Nov 6, 1998Mar 14, 2000The Whitaker CorporationStackable electrical connector
US6508673Apr 4, 2001Jan 21, 2003Mcdowell Jennifer LynLow cost smart card reader, extension style, with wiping contacts
Classifications
U.S. Classification439/377, 439/633
International ClassificationH01R12/18, H01R13/64
Cooperative ClassificationH01R12/721, H01R13/64
European ClassificationH01R23/70B
Legal Events
DateCodeEventDescription
Jun 15, 1983ASAssignment
Owner name: ALLIED CORPORATION COLUMBIA ROAD AND PARK AVENUE,
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BUNKER RAMO CORPORATION A CORP. OF DE;REEL/FRAME:004149/0365
Effective date: 19820922