US3548368A - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
US3548368A
US3548368A US801587A US3548368DA US3548368A US 3548368 A US3548368 A US 3548368A US 801587 A US801587 A US 801587A US 3548368D A US3548368D A US 3548368DA US 3548368 A US3548368 A US 3548368A
Authority
US
United States
Prior art keywords
rib
contact portion
connector
receptacle
extending
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
US801587A
Other languages
English (en)
Inventor
Wladimiro Teagno
Nerino Iskra
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.)
TE Connectivity Corp
Original Assignee
AMP Inc
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 AMP Inc filed Critical AMP Inc
Application granted granted Critical
Publication of US3548368A publication Critical patent/US3548368A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/02—Details
    • H01T13/04—Means providing electrical connection to sparking plugs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/35—Contact members for non-simultaneous co-operation with different types of contact member, e.g. socket co-operating with either round or flat pin

Definitions

  • An ignition connector has a socket portion provided with a circumferential rim near a crimping ferrule and a longitudinal rib merging with the circumferential rib and being aligned with a neck connecting the socket portion and ferrule to improve resistance to lateral tension on the ignition cable when crimped in the ferrule.
  • This invention relates to an electrical connector for making releasable electrical connection with either a spark plug stem or an ignition voltage distributor receptacle.
  • Such connectors usually comprise a generally tubular contact portion having at one end a connecting portion, for example, a crimping ferrule, for connection to an electrical lead, the contact portion and the connecting portion being joined by a neck which extends from an edge of the contact portion.
  • the contact portion is arranged to receive a spark plug stem to make good electrically-conductive contact with the stem and can also be inserted into the distributor receptacle to engage the internal surface of the distributor receptacle to make good electrically-conductive contact with the receptacle.
  • the contact portion may engage the internal surface of the receptacle through ribs formed in and projecting outwardly of the contact portion.
  • an electrical connector for making releasable electrical connection with either a spark plug stem or an ignition voltage distributor receptacle comprises a generally tubular contact portion to one end of which a connecting portion for connection to an electrical lead is joined by a neck which extends from an edge of the contact portion, the contact portion having a radially outwardly-projecting circumferentially-extending rib and a radially outwardly-projecting longitudinal rib for engaging the internal surface of the distributor receptacle, the circumferentially-extending rib being disposed near that end of the contact portion from which the neck extends and the longitudinal ri'b being axially aligned with the neck and merging with the circumferentially-extending rib.
  • the contact portion preferably has further radially outwardly-projecting longitudinal ribs, which also merge with the circumferentially-extending rib, the longitudinal ribs, which are evenly distributed 3,548,368 Patented Dec. l5, 1970 ICC about the circumference o'f the contact portion, co-operating to guide the contact portion into the distributor receptacle and to stabilize the contact portion in the receptacle.
  • the circumferentiallyextending rib can conveniently engage in a peripheral recess near the mouth of the receptacle.
  • At least one of the longitudinal ribs may have a projection which also engages in the recess to cornpensate for oversize of the recess with respect to the circumferentially-extending rib.
  • the contact portion may have radially inwardly-extending pimples formed in the longitudinally-extending edge portions of a sheet metal blank from which the connector has been rolled, the pimples being generally triangular as seen in plan view, with the bases of the triangles coinciding with the edges of the blank, the pimples being disposed opposite to one another.
  • FIG. 1 is a top plan view of an electrical connector for making releasable electrical connection either with a spark plug stem or an ignition voltage distributor receptacle;
  • FIG. 2 is a side elevational view of the connector
  • FIG, 3 is an enlarged cross-sectional view taken on the line 3 3 of FIG. l;
  • FIG. 4 is an enlarged cross-sectional view taken on the line 4 4 of FIG. 1;
  • FIG. 5 is an elevational view partly in section showing the connector crimped to a cable and mated with an ignition voltage distributor receptacle;
  • FIG. 6 is an elevational view of the connector crimped to a cable end and mated with a spark plug stem which is shown in broken lines.
  • FIG. 7 is an enlarged side elevational view of a modied form of the connector crimped to a cable.
  • FIG. 8 is atop plan View of FIG. 7.
  • the connector which has been made by rolling a blank of spring sheet metal, comprises a connecting portion 2 and a contact portion 4.
  • the portion 2 is formed by an essentially U-section crimping ferrule having upstanding side walls or legs 6 extending from opposite sides of a web 8 having an inwardly-projecting rib 10 which extends into the side walls 6.
  • a series of lances 12 produced by perforating the base 8 project inwardly of the portion 2.
  • the portion 2 is joined to the portion 4 by a neck 14 of the connector material.
  • the portion 4 is generally tubular, having at its end nearest the portion 2 a circumferentially-extending rib 16 which extends about substantially the Whole periphery of the portion 4 and which projects radially outwardly of the portion 4.
  • a first longitudinal radially outwardly-projecting rib 18 of the portion 4 is disposed on the opposite side of the longitudinally extending edges 20 of the blank from which the connector was produced, and it merges with the rib 16 at 22.
  • the portion 4 has second and third longitudinal radially outwardly-projecting ribs 24 and 26. These ribs, however, do not merge with the rib 16.
  • the ribs 18, 24 and 26 are evenly distributed about the periphery of the portion 4 as best seen in FIG. 3.
  • Radially inwardly-projecting and oppositely-disposed pimples 28 are formed in the vicinity of the edges 20 by bending the material of the portion 4 inwardly, and they are generally triangular as seen in FIG. 1, with the bases of the triangles coinciding with the edges 20.
  • the pimples 28 are disposed approximately midJway between the rib 16 and the left-hand (as seen in FIGS. 1 and 2) end of the portion 4.
  • a further pimple 29 projects radially outwardly from the rib 18 in the vicinity of its junction with the rib 16.
  • the portion 2 has been crimped about an end of a high voltage insulated ignition cable 30.
  • the end of the electrically conductive central core 32 of the cable was bared and bent back to lie alongside the cable end.
  • the rib presses the core 32 against the cable 30 to make good electrically conductive connection between the core 32 and the connector, the rib 10 also serving to restrain relative axial movement between the connector and the cable.
  • the lances 12 are driven into the insulation of the cable further to restrain the relative axial movement.
  • the rib 16 engages in the upper (as seen in FIG. 5) part of a circumferential internal recess RC in the receptacle R (the recess RC being considerably oversized with respect to the rib 16), the pimple 29 engaging in the lower (as seen in FIG. 5 part of the recess RC. Where the recess RC is not so oversized the pimple 29 is compressed and flattened by the wall of the recess RC.
  • the ribs 16, 18, 24 and 26 serve to guide and center the contact portion 4 with respect to the receptacle, during its insertion into the receptacle, and engage the receptacle wall in the mated condition ofthe connector and receptacle, as shown in FIG. 5. These ribs also enhance the spring characteristics of the contact portion.
  • the pimples 28 engage beneath the head H to restrain withdrawal of the connector from the stem S.
  • the pimples 28 may be axially displaced with respect to one another to allow for tolerance variations.
  • the rib 16 serves to stilen the contact portion 4 in the vicinity of the neck 14 against forces applied to the contact portion 4 by way of the neck 14 if the cable 30 is strained transversely of the longitudinal axis of the stern S. This stifening is augmented by the fact that the rib 18 merges with the rib 16 in the vicinity of the neck 14 and lies in axial alignment with the neck 14.
  • the pimple 29 is positioned along the rib 18 in accordance with the width and position of the recess RC, which may vary from one make of distributor receptacle to another.
  • the connecting portion 2 may be provided with a struck-out lance (not shown) for piercing 4 the insulation of the cable to make electrically conductive contact with the cable core.
  • the leading edge of the Contact portion 4 may be chamfered to facilitate insertion of the portion 4 into the distributor receptacle and the leading corners of the edges 20 may be rounded off to facilitate mating the portion 4 with the spark plug stern.
  • the connector which has been made by rolling a blank of spring sheet metal, comprises a connecting portion 2a and an essentially tubular contact portion 4a joined to the portion 2a by a neck 14a.
  • the portion 2a which was originally of essentially U-section in the manner of the connecting portion 2 described above with reference to FIGS. 1 to 4, has been crimped about an end of a high voltage insulated ignition cable 30a so that an essentially triangular-shaped lance (not shown) but struck out from opening 33 in leg 6a and extending from the base of the connecting portion 42a pierced the insulation of the cable 30a to make electrically conductive contact with the electrically conductive core (not shown) of the cable 30a.
  • a lance from each leg 6a may be provided.
  • the portion 4a has at its end nearest the portion 2a a circumferentially-extending rib 16a which projects radially outwardly of the portion 4a.
  • Three radially outwardly projecting longitudinal ribs 18a, 24a and 26a are evenly spaced from one another about the periphery of the portion 4a and each merge with the circumferentially-extending rib 16a.
  • the rib 18a is in axial alignment with the neck 14a.
  • the portion 4a has pimples 28a similar to the pimples 28 described above with reference to FIGS. 1 to 6 and serving the same purpose as the pimples 28.
  • the connecting portion 4a may also be provided, if desired, with a pimple (not shown) corresponding to the pimple 29 of FIGS. l to 6.
  • An electrical connector for making releasable electrical connection with either a spark plug stem or an ignition voltage distributor receptacle, the connector comprising a generally tubular contact portion, a connecting portion for connection to an electrical lead, a neck extending from an edge of the contact portion and connecting said contact portion and said connecting portion together, the contact portion having a radially outwardlyprojecting circumferentially-extending rib and a radially outwardly-projecting longitudinal rib for engaging the internal surface of the distributor receptacle, the circumferentialy-extending rib being disposed near that end of the contact portion from which the neck extends, the longitudinal rib being axially aligned with the neck and merging with the circumferentially-extending rib.
  • a connector according to claim 1 in which additional longitudinal ribs project outwardly from said contact portion with the longitudinal ribs being evenly distributed circumferentially around the contact portion.
  • a connector according to claim 1 in which the contact portion has, substantially mid-way between the circumferentially-extending rib and the other end of the contact portion, radially inwardly-projecting pimples at edges of a sheet metal blank from which the connector has been rolled.
  • An electrical connector comprising a contact portion of generally tubular conguration and having edges disposed opposite one another, a ferrule portion, a neck portion extending between said contact portion and Isaid ferrule portion and connecting these portions together,

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US801587A 1968-02-28 1969-02-24 Electrical connector Expired - Lifetime US3548368A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1331968 1968-02-28

Publications (1)

Publication Number Publication Date
US3548368A true US3548368A (en) 1970-12-15

Family

ID=11144371

Family Applications (1)

Application Number Title Priority Date Filing Date
US801587A Expired - Lifetime US3548368A (en) 1968-02-28 1969-02-24 Electrical connector

Country Status (8)

Country Link
US (1) US3548368A (ja)
BE (1) BE727461A (ja)
DE (1) DE1909705A1 (ja)
ES (1) ES162733Y (ja)
FR (1) FR2002733A1 (ja)
GB (1) GB1178830A (ja)
NL (1) NL6902782A (ja)
SE (1) SE336934B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4874338A (en) * 1987-03-31 1989-10-17 Amp Incorporated Receptacle box terminal with improved contact area

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995929A (en) * 1974-11-05 1976-12-07 General Motors Corporation Female terminal
DE3228581C2 (de) * 1982-07-30 1984-08-16 Otto 8959 Trauchgau Bihler Kleinformatige Kontaktstift-Baugruppe
US4466688A (en) * 1982-09-24 1984-08-21 Porta Systems Corp. Self-centering plug and socket
US4752250A (en) * 1985-02-05 1988-06-21 American Specialties Corp. Compliant connector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243763A (en) * 1964-01-13 1966-03-29 Essex Wire Corp Electrical terminal and method of applying same to electrical conductors
FR1514956A (fr) * 1966-06-15 1968-03-01 Connexion électrique pour câble antiparasite
US3423718A (en) * 1967-01-13 1969-01-21 Amp Inc Terminal with nail lance and support member therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243763A (en) * 1964-01-13 1966-03-29 Essex Wire Corp Electrical terminal and method of applying same to electrical conductors
FR1514956A (fr) * 1966-06-15 1968-03-01 Connexion électrique pour câble antiparasite
US3423718A (en) * 1967-01-13 1969-01-21 Amp Inc Terminal with nail lance and support member therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4874338A (en) * 1987-03-31 1989-10-17 Amp Incorporated Receptacle box terminal with improved contact area

Also Published As

Publication number Publication date
SE336934B (ja) 1971-07-19
DE1909705A1 (de) 1969-09-25
BE727461A (ja) 1969-07-01
ES162733U (es) 1971-04-01
NL6902782A (ja) 1969-09-01
GB1178830A (en) 1970-01-21
FR2002733A1 (ja) 1969-10-31
ES162733Y (es) 1971-09-01

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