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Publication numberUS3753193 A
Publication typeGrant
Publication dateAug 14, 1973
Filing dateApr 17, 1972
Priority dateApr 27, 1971
Also published asCA957743A, CA957743A1, DE2218631A1
Publication numberUS 3753193 A, US 3753193A, US-A-3753193, US3753193 A, US3753193A
InventorsL Campari, W Teagno
Original AssigneeAmp Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Socket terminal
US 3753193 A
Abstract
A socket terminal for releasably receiving a pin and comprising a channel-shaped contact portion for receiving the pin between the channel sides and normally through an aperture in the channel base, the aperture extending throughout the channel width and being elongated lengthwise of the channel; a wire connecting section being formed at an end of the channel-shaped portion, tongues extending integrally from opposite ends of the aperture for engaging diametrically opposite first side portions of the pin, side portions of the channel being arranged to engage diametrically opposite second side portions of the pin orthogonally arranged with respect to the first side portions.
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Description  (OCR text may contain errors)

United States Patent [191 Teagno et al.

[ 1 Aug. 14, 1973 1 SOCKET TERMINAL [30] Foreign Application Priority Data Apr. 27, 1971 Italy 23731 M71 [52] US. Cl 339/256 R, 339/65, 339/217 S [51] Int. Cl H011 11/22 [58] Field of Search 339/19, 217, 276 F,

[56] References Cited UNITED STATES PATENTS 1/1971 Lundergan et a1. 339/258 P 8/1965 Keller 339/217 S 3,336,567 8/1967 Coldren 339/192 R 3,271,729 9/1966 Bakker et a1. 339/217 S FOREIGN PATENTS OR APPLICATIONS 93,843 V 4/1969 France 339/217 5 OTHER PUBLICATIONS Mele et al., Straight-Through Connector IBM Tech. Disclosure, 4-1971.

Primary Examiner-Marvin A. Champion Assistant Examiner-Robert A. I-Iafer Attorney-William J. Keating, Jay L. Seitchik et al.

[5 7] ABSTRACT A socket terminal for releasably receiving a pin and comprising a channel-shaped contact portion for receiving the pin between the channel sides and normally through an aperture in the channel base, the aperture extending throughout the channel width and being elongated lengthwise of the channel; a wire connecting section being formed at an end of the channel-shaped portion, tongues extending integrally from opposite ends of the aperture for engaging diametrically opposite first side portions of the pin, side portions of the channel being arranged to engage diametrically opposite second side portions of the pin orthogonally arranged with respect to the first side portions.

The socket terminals are particularly useful when assembled in cluster blocks of the kind used in connecting through the hermetically sealed enclosures of refrigerator motors where they may be subject to vibration and adverse atmospheric environment but must satisfy stringent reliability requirements.

3 Claims, 5 Drawing Figures Patented Aug. 14, 1973 2 Sheets-Sheet 1 v Patented Aug. 14, 1973 2 Sheets-Sheet 2 1 I: *1 r%\ fllvnm F SOCKET TERMINAL This invention relates to socket terminals and is particularly concerned with a receptacle for use in a cluster block of the kind used in connecting through the hermetically sealed enclosures of refrigerator motors. A connector of this type has been fully described in U.S. Pat. No. 3,271,729.

In use such receptacles are subject to vibration and, often, to adverse atmospheric environment. There are stringent reliability requirements and difficulty has been experienced in meeting these requirements in practice. It is important that the receptacles are securely retained within their housings, and yet can readily be removed for inspection or replacement. It is important that a connector is securely retained on its complementary pins in use to avoid inadvertant removal under vibration or other operating conditions and also that it can readily be engaged with its complementary pins.

There have been numerous improvements in contact receptacles and housings in an attempt to meet the stringent requirements and it is an object of this invention to present a further improved socket terminal.

A socket terminal for releasably receiving a pin according to the present invention comprises a channelshaped contact portion for receiving the pin between the channel sides and normally through an aperture in the channel base, the aperture extending throughout the channel width and being elongated lengthwise of the channel; a wire connecting section being formed at an end of the channel-shaped portion, tongues extending integrally from opposite ends of the aperture for engaging diametrically opposite first side portions of the pin, side portions of the channel being arranged to engage diametrically opposite second side portions of the pin orthogonally arranged with respect to the first side portions.

The invention will now be described, by way of example, with reference to the accompanying partly diagrammatic drawings, in which:

FIG. I is a fragmentary partly sectional exploded perspective view of a pin and socket assembly;

FIG. 2 is a fragmentary plan view of the FIG. 1 assembly with the housing in section;

FIG. 3 is a fragmentary side elevation of the FIG. 1 assembly with the housing in section;

FIG. 4 is a fragmentary perspective view of a socket terminal of the FIG. 1 assembly in engagementwith a pin; and

FIG. 5 is a perspective view of a complete connector assembly according to the invention.

The assembly of FIG. 5 comprises a unitary plastics moulding of slab-like form having three parallel passageways communicating with respective pin apertures. The pin apertures are disposed at one side of the block in triangular array. Each passageway contains a contact socket for engaging a pin received through the aperture, the contact being secured to a conductor wire and the wires of all of the contacts extending from a common end of the housing.

FIG. 1 shows one of the socket terminals 1 of the FIG. 5 assembly in its passageway 2 of the housing 3. The socket terminal 1 comprises a channel-shaped contact portion 4 integrally formed at one end with wire crimp and insulation support sections 5 and 6 secured respectively to the stripped end and insulation of a conductor wire 7. The channel base is formed with an aperture 8 registering with a pin aperture 9, FIG. 3, formed in the housing wall, the aperture 8 extending from side to side of the channel and being elongated lengthwise of the channel. The aperture 8 ext-ends into the channel sides at side apertures 10 which have forward and rearward sides converging towards the ends of aperture 8. The side apertures 10 are bridged by channel side portions 11, distal from the base, and longer than the base aperture 8.

Integral tongues 12 project inwardly from opposite ends of the apertures and at their free ends have lips 13 turned up between the channel sides. As seen in plan view in FIG. 2, the lips 13 are arcuately formed for embracing a circular section pin 14 and define parts of circular profile axially aligned with and of lesser diameter than pin aperture 9.

The channel side portions 11 bridging the side apertures 10 are each formed centrally with arcuate inwardly facing concavities 15, as seen in plan view, for embracing the pin 14 in resilient manner. The concavities 15 thus define in relaxed condition parts of a circle of lesser diameter than that of pin 14 and axially aligned with the pin aperture 9. Theconcavities 15 are disposed on a side of the channel base remote from the housing aperture for the pin 14 and are spaced from the lips 12 axially of the pin 14. Also the concavities 15 are arranged to engage diametrically opposite portions of the pin 8 orthogonal to diametrically opposite pin portions engaged by the lips 13.

The tongues 12 define short cantilever springs compared with longer beams defined by the side portions 11 so that the tongues 12 are stiffer and may exert substantially greater contact pressure. They are also, by virtue of the turned up lips, more resistant to withdrawal than to insertion of the pin 14.

The channel sides at their free edges remote from the base, are each provided with a pair of ears 16, one at each end of the channel section and projecting away from the base. The cars 16 serve to guide the contact within the housing passageway 2 by slidably engaging the wall opposite that formed with pin aperture 9. They also serve to stand the channel side portions 11 away from the wall.

The cars 16 at the channel end distal from the wire connecting section 5,6 serve to latch the socket within the housing. The housing is formed at the forward end of the passageway adjacent the wall formed with the pin aperture 9, with a pair of stops 17 which limit forward insertion of the socket into the passageway. Rearwardly of stops l7, and at the opposite wall is a pair of further stops 18 one at each side of the passageway 2. The stops 18 are formed with forward shoulder surfaces 19 facing the forward stops l7, and rear ramplike surfaces 20 inclined rearwardly and outwardly.

On insertion of the socket contact into a passageway, from the right, as seen in FIGS. 2 and 3, the leading ears 16 engage the ramp surfaces 20 and are cammed inwards by flexure of the channel sides. When the leading ears 16 pass the shoulder surfaces 19 they spring outwards to engage the shoulders 119 to resist contact withdrawal. Forward ends of the channel sides engage the stops 17 to resist further forward movement.

We claim:

1. A socket terminal for releasably receiving a pin and comprising a channel-shaped contact portion for receiving the pin between the channel sides and normally through an aperture in the chanel base, the aperture extending throughout the channel width and into the channel side portions, a wire connecting section being formed at an end of the channel-shaped portion, tongues extending integrally from opposite sides of the aperture for engaging diametrically opposite first side portions of the pin, side portions of the channel being arranged to engage diametrically opposite second side portions of the pin orthogonally arranged with respect to the first side portions, the channel side portions being spaced axially of the pin from the tongues of the channel base, said tongues arranged to exert a relatively high contact pressure on the pin and said side base.

I t i i

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3202959 *Sep 10, 1962Aug 24, 1965Amp IncElectrical connector and housing
US3271729 *Nov 30, 1964Sep 6, 1966Amp IncCluster receptacle with basal lance and one piece housing
US3336567 *Jul 21, 1965Aug 15, 1967Amp IncElectrical connector
US3553635 *Sep 5, 1969Jan 5, 1971Amp IncElectrical interconnecting system and parts
FR93843E * Title not available
Non-Patent Citations
Reference
1 *Mele et al., Straight Through Connector IBM Tech. Disclosure, 4 1971.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3842396 *Apr 27, 1973Oct 15, 1974Amp IncCluster block housing and pin receptacle
US4186987 *Oct 23, 1978Feb 5, 1980General Motors CorporationElectrical socket connector and terminal therefor
US4214801 *Mar 1, 1979Jul 29, 1980Ford Motor CompanyFuse holder with insertion ramp
US4230392 *Mar 22, 1979Oct 28, 1980General Motors CorporationElectrical socket connector
US4402897 *Mar 8, 1982Sep 6, 1983General Motors CorporationMolding and machining of one piece electrical socket connector
US4542948 *Nov 10, 1983Sep 24, 1985Amp IncorporatedHousing for a female electrical contact
US4673239 *Aug 27, 1986Jun 16, 1987Emhart Industries, Inc.Terminal block assembly
US4753607 *Jan 28, 1987Jun 28, 1988Standex International CorporationCluster assembly with aligning boss
US4759726 *Aug 12, 1987Jul 26, 1988Reed Devices, Inc.Screwless type electrical terminal block
US5362260 *Aug 3, 1993Nov 8, 1994Molex IncorporatedElectrical connector with improved terminal latching system
US5716238 *Aug 13, 1996Feb 10, 1998Sumitomo Wiring Systems, Ltd.Housing for an electrical device
US5788543 *Sep 8, 1995Aug 4, 1998Packard Hughes Interconnect CompanyHigh power clip-on interconnection system
US6799987 *Jun 2, 2000Oct 5, 2004Lg.Philips Lcd Co., Ltd.Wire connecting device
US7108565 *Oct 31, 2005Sep 19, 2006Inarca S.P.A.Connection assembly for electrical cables, of the type for connection to connectors with cylindrical-pin terminals
US7249968 *Aug 16, 2004Jul 31, 2007Aps Technology, Inc.Electrical connections for harsh conditions
US7491101May 4, 2005Feb 17, 2009Illinois Tool Works Inc.Self-locking wire terminal and shape memory wire termination system
US7806728 *May 7, 2009Oct 5, 2010Honda Tsushin Kogyo Co., Ltd.Electrical connector with crimp contact
US9413094 *Jan 21, 2015Aug 9, 2016Advanced-Connectek Inc.Terminal for an electrical connector
US20050282444 *May 4, 2005Dec 22, 2005Irish Kenneth GSelf-locking wire terminal and shape memory wire termination system
US20060116028 *Oct 31, 2005Jun 1, 2006Inarca S.P.A.Connection assembly for electrical cables, of the type for connection to connectors with cylindrical-pin terminals
US20090280700 *May 7, 2009Nov 12, 2009Taizo SogoElectrical connector
US20150229069 *Jan 21, 2015Aug 13, 2015Avanced-Connectek Inc.Terminal for an electrical connector
EP0549908A2 *Dec 2, 1992Jul 7, 1993Molex IncorporatedElectrical terminal assembly with terminal lock
EP0549908A3 *Dec 2, 1992Jan 26, 1994Molex IncTitle not available
EP0729201A1 *Feb 24, 1995Aug 28, 1996Molex IncorporatedElectrical connector with improved terminal latching means
EP1610418A2 *Jun 14, 2005Dec 28, 2005Illinois Tool Works Inc.Self-locking wire terminal and shape memory wire termination system
EP1610418B1 *Jun 14, 2005Sep 12, 2007Illinois Tool Works Inc.Self-locking wire terminal
WO2016097903A1 *Nov 20, 2015Jun 23, 2016Szikra IstvanElectric connector device primarily for the hermetically sealed compressor of refrigerators
Classifications
U.S. Classification439/854, 439/872
International ClassificationH01R24/12, H01R13/56, H01R13/428
Cooperative ClassificationH01R13/567, H01R13/428
European ClassificationH01R13/56E, H01R13/428