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US3914003A - Spark plug socket for internal combustion engines - Google Patents

Spark plug socket for internal combustion engines Download PDF

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Publication number
US3914003A
US3914003A US431594A US43159474A US3914003A US 3914003 A US3914003 A US 3914003A US 431594 A US431594 A US 431594A US 43159474 A US43159474 A US 43159474A US 3914003 A US3914003 A US 3914003A
Authority
US
United States
Prior art keywords
bore
socket
lead
sides
conductor
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
US431594A
Other languages
English (en)
Inventor
Fritz Loy
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.)
Kabelmetal Electro GmbH
KM Kabelmetal AG
Original Assignee
KM Kabelmetal AG
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 KM Kabelmetal AG filed Critical KM Kabelmetal AG
Application granted granted Critical
Publication of US3914003A publication Critical patent/US3914003A/en
Assigned to KABELMETAL ELECTRO GMBH, KABELKAMP 20, 3000 HANNOVER 1, GERMANY reassignment KABELMETAL ELECTRO GMBH, KABELKAMP 20, 3000 HANNOVER 1, GERMANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KABEL- UND METALLWERKE GUTEHOFFNUNGSHUTTE AG
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
    • H01T13/06—Covers forming a part of the plug and protecting it against adverse environment
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
    • 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
    • H01T13/05—Means providing electrical connection to sparking plugs combined with interference suppressing or shielding means

Definitions

  • a socket element for insertion of a spark plug has a [52] US. Cl. 339/26; 339/136 C; 339/213 3 central bore of triangular cross-section, receiving an [51] Im. C1. 1-l0lR 13/52 ignition circuit con uctor n tangential relation as to [58] Field of Se hu 339/26, 60 C, 136 C, 143 3 all three sides. The remaining cavities are filled with 339/149 S, 213 S, 218 S; 425/129 elastomeric filler material to seal the conductor as well as a resistor and the socket contact in the interior 6] References Cited of the bore.
  • the present invention relates to a socket for a spark plug for internal combustion engines which socket connects to the end of an electric conductor or lead of the electrical ignition circuit.
  • Sockets of this type are known in various configurations and are made almost always from thermosetting material. These sockets are usually sufficiently strong, but they are also relatively brittle and break rather easily particularly because of the direct engagement of contacts, resistor and socket body. Additionally, it has to be observed that gaps appear between the rather stiff socket and the inserted conductor, so that moisture can creep into the interior of the socket, and leakage current will flow tending to destroy the socket. Additionally, the conductor can easily break at the opening and entrance into the socket.
  • a body-made of thermosetting plastic with a central, polygonal bore for receiving a conductor, i.e. an ignition lead in tangentially engaging relation as to the bore walls;
  • the bore has an internal portion, which is defined by closed wall structure corresponding to the polygonal cross-section, the bore being filled with elastomeric plastic, filling all cavities between socket and conductor.
  • the polygon is to be a triangle as sufficiently large cavities are established between such a bore and a (round) conductor to obtain positively adequate quantities of filling material.
  • the conductor Since the bore is to have polygonal cross-section the conductor is automatically centered in the bore and in the socket as a whole. Additionally, upon filling the cavities in the socket with elastomeric plastic, one obtains a large area of contact for fixing the position of the conductor in the bore, so that any additional tension relief is not needed.
  • the elastomeric filler obviates also the danger of breaking of the conductor at the entrance opening to the socket. This is particularly so if the entrance portion of the bore is widened to some extent so that the lead is clearly surrounded by an annulus, even an annular bead for sealing the bore and for providing relief against breaking of the lead upon bending.
  • FIG. 1 shows a longitudinal section through a spark plug socket in accordance withthe preferred embodiment of the invention
  • FIG. 2 is a section along lines 11-" in FIG. 1;
  • FIG. 3 shows a longitudinal section through a spark plug socket in accordance with another example of the preferred embodiment of the invention.
  • FIG. 4 is a section along lines IVIV in FIG. 3.
  • FIG. 1 illustrates a socket member or body 1 made of thermosetting plastic and having a longitudinal, centrally located bore 2 of triangular cross-section.
  • An ignition wire or lead spark of a plug cable 3 is inserted into the bore in that the round lead has tangential disposition to all three sides of the triangle. Accordingly, the round lead 3 is centered in the bore in that it is received in an elongated cavity of triangular crosssection and having three straight and flat uninterrupted walls; particularly in the internal regions of the bore.
  • the conductor or lead 3 does not penetrate the bore in its entirety but connects to a resistor 4, contained also in the bore, which in turn is connected to a contact element 5 in the bottom of the opening, which will receive theplug end of a spark plug 6.
  • Filler 7 is in intimate contact with the three straight and flat walls of bore 2, (i.e. with the socket member 1 as such) as well as with the parts 3 and 4, firmly embedding them in bore 2 in centered position.
  • the area of bonding contact between filler 7 and member 1 is rather large due to the triangular configuration.
  • entrance opening of bore 2 is widened to obtain a.
  • elastomeric filler projects somewhat from this opening and provides support and relief against severe local bending of the lead. Additionally, and as shown also in the upper portion of FIG. 1, lateral bores in element 1 will also fill with elastomeric material upon injection thereof, to form anchoring lugs 8, preventing any longitudinal displacement of the filler 7 in bore 2.
  • FIGS. 3 and 4 show a basically similar socket but received in a metallic sleeve 9.
  • the sleeve is rather loosely placed onto and around socket element 1.
  • element 1 is provided with longitudinal, possibly rather shallow grooves 10 on the outside; the cavities resulting from the shield covering the grooves are also filled with elastomeric material.
  • the inner tiller 7 is, in effect extended around the entrance opening for the conductor lead 3, forming a head 12 from which extends filler material into the grooves 10 for positioning element 1 inside of sleeve 9.
  • Bead 12 provides improved sealing of the interior of socket element 1, as well as improved protection against breaking of the lead 3, should it be bent.
  • Another'bead 11 at the opposite end of the socket member seals the socket against the spark plug itself.
  • Socket for spark plugs for internal combustion engines comprising a single piece socket member of elongated configuration having connection means at one end for receiving a spark plug, and being made of thermosetting plastic, themember having a central longitudinal bore, the bore having three sides integrally connected together so that said bore will have an uninterrupted periphery defined by said sides, said bore will thus have a cross-section defined by a triangle, the bore being closed except at the other end, the bore receiving at the other end a round conductor lead in tangentially abutting relationship as to each of the three sides of the bore, the three. sides of the bore thus centering the lead through said abutting relationship, the bore having a wider portion at the other end, terminating inan opening through which passes the inserted conductor lead,

Landscapes

  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
US431594A 1972-12-14 1974-01-08 Spark plug socket for internal combustion engines Expired - Lifetime US3914003A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2261103A DE2261103A1 (de) 1972-12-14 1972-12-14 Zuendkerzenstecker fuer verbrennungsmotoren

Publications (1)

Publication Number Publication Date
US3914003A true US3914003A (en) 1975-10-21

Family

ID=5864362

Family Applications (1)

Application Number Title Priority Date Filing Date
US431594A Expired - Lifetime US3914003A (en) 1972-12-14 1974-01-08 Spark plug socket for internal combustion engines

Country Status (6)

Country Link
US (1) US3914003A (de)
JP (1) JPS51245B2 (de)
DE (1) DE2261103A1 (de)
FR (1) FR2210845B1 (de)
GB (1) GB1395139A (de)
NL (1) NL7316745A (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520163A1 (fr) * 1982-01-20 1983-07-22 David Francis Connecteur pour lampe a broches
US4566751A (en) * 1983-12-27 1986-01-28 Tokai Electric Wire Company Limited Distributor cap with ignition cable
US4636020A (en) * 1983-05-31 1987-01-13 Allied Corporation Insert for an electrical connector
JPS63210481A (ja) * 1987-02-21 1988-09-01 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 電磁操作弁、特に燃料噴射弁
DE3835984A1 (de) * 1987-11-13 1989-05-24 Prestolite Wire Corp Starre huelle fuer ein zuendkerzenkabel und den damit verbundenen schuh
EP0324552A1 (de) * 1988-01-09 1989-07-19 LUCAS INDUSTRIES public limited company Zündkerzensteckverbindung
US4859194A (en) * 1988-04-06 1989-08-22 Proprietary Technology, Inc. Spark plug connector
US4906202A (en) * 1989-03-13 1990-03-06 General Motors Corporation Deep well ignition cable terminal assembly
US4910867A (en) * 1988-05-27 1990-03-27 Amp Incorporated Method of forming a sealed electrical connector
US5033982A (en) * 1990-05-31 1991-07-23 Sun Microstamping, Inc. Electrical connector
EP0488216A2 (de) * 1990-11-29 1992-06-03 Yazaki Corporation Einrichtung für Hochspannungskabel
EP0537566A2 (de) * 1991-10-17 1993-04-21 Delphi Automotive Systems Deutschland GmbH Zündkerzenstecker
EP0619631A1 (de) * 1993-04-05 1994-10-12 Sumitomo Wiring Systems, Ltd. Zündkerzenvorrichtung
US5380224A (en) * 1992-04-14 1995-01-10 Ametek Aerospace Products, Inc. Repairable cable assembly
US5599195A (en) * 1993-11-30 1997-02-04 Yazaki Corporation Ignition plug cap
US6793863B1 (en) 1999-06-15 2004-09-21 Lexington Insulators Process for producing a spark plug boot resistor assembly
US20060009054A1 (en) * 2004-07-08 2006-01-12 Alcatel Cable connection assembly
US20090124115A1 (en) * 2007-11-09 2009-05-14 Fang-Chang Hsieh Strain Relief Collar for Accessories Associated with Mobile Device and Method of Making
WO2012022307A1 (de) * 2010-05-11 2012-02-23 Motortech Gmbh Herstellungsverfahren für elektrisches bauteil sowie elektrisches bauteil
US20140154901A1 (en) * 2011-08-11 2014-06-05 Motortech Gmbh Spark plug connector

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3023288C2 (de) * 1980-06-21 1986-01-09 Robert Bosch Gmbh, 7000 Stuttgart Entstörstecker zum Aufstecken auf dem Isolator einer Zündkerze oder dem Dorn eines Verteilers
DE3218752C2 (de) * 1982-05-18 1987-04-16 BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg Zündkerzenentstörstecker
US5145433A (en) * 1989-07-14 1992-09-08 Yazaki Corporation High tension cable device and process of producing the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458121A (en) * 1945-06-23 1949-01-04 Bendix Aviat Corp Radio shielded ignition means
US2488065A (en) * 1947-03-12 1949-11-15 Constantine M Peterson High-tension terminal housing
US2666423A (en) * 1951-02-08 1954-01-19 Jr Guy D Johnson Radiation shield for spark plugs
US3803529A (en) * 1971-08-25 1974-04-09 Kabel Metallwerke Ghh Connector socket for spark plugs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458121A (en) * 1945-06-23 1949-01-04 Bendix Aviat Corp Radio shielded ignition means
US2488065A (en) * 1947-03-12 1949-11-15 Constantine M Peterson High-tension terminal housing
US2666423A (en) * 1951-02-08 1954-01-19 Jr Guy D Johnson Radiation shield for spark plugs
US3803529A (en) * 1971-08-25 1974-04-09 Kabel Metallwerke Ghh Connector socket for spark plugs

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520163A1 (fr) * 1982-01-20 1983-07-22 David Francis Connecteur pour lampe a broches
US4636020A (en) * 1983-05-31 1987-01-13 Allied Corporation Insert for an electrical connector
US4566751A (en) * 1983-12-27 1986-01-28 Tokai Electric Wire Company Limited Distributor cap with ignition cable
JP2732848B2 (ja) 1987-02-21 1998-03-30 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 電磁操作弁、特に燃料噴射弁
JPS63210481A (ja) * 1987-02-21 1988-09-01 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング 電磁操作弁、特に燃料噴射弁
US4817876A (en) * 1987-02-21 1989-04-04 Robert Bosch Gmbh Electromagnetically actuatable valve, in particular fuel injection valve
DE3835984A1 (de) * 1987-11-13 1989-05-24 Prestolite Wire Corp Starre huelle fuer ein zuendkerzenkabel und den damit verbundenen schuh
EP0324552A1 (de) * 1988-01-09 1989-07-19 LUCAS INDUSTRIES public limited company Zündkerzensteckverbindung
US4859194A (en) * 1988-04-06 1989-08-22 Proprietary Technology, Inc. Spark plug connector
US4910867A (en) * 1988-05-27 1990-03-27 Amp Incorporated Method of forming a sealed electrical connector
US4906202A (en) * 1989-03-13 1990-03-06 General Motors Corporation Deep well ignition cable terminal assembly
US5033982A (en) * 1990-05-31 1991-07-23 Sun Microstamping, Inc. Electrical connector
EP0488216A2 (de) * 1990-11-29 1992-06-03 Yazaki Corporation Einrichtung für Hochspannungskabel
EP0488216A3 (de) * 1990-11-29 1994-04-27 Yazaki Corp
EP0537566A2 (de) * 1991-10-17 1993-04-21 Delphi Automotive Systems Deutschland GmbH Zündkerzenstecker
EP0537566A3 (en) * 1991-10-17 1993-09-22 Kabelwerke Reinshagen Gmbh Spark plug connector
US5380224A (en) * 1992-04-14 1995-01-10 Ametek Aerospace Products, Inc. Repairable cable assembly
EP0619631A1 (de) * 1993-04-05 1994-10-12 Sumitomo Wiring Systems, Ltd. Zündkerzenvorrichtung
US5599195A (en) * 1993-11-30 1997-02-04 Yazaki Corporation Ignition plug cap
US6793863B1 (en) 1999-06-15 2004-09-21 Lexington Insulators Process for producing a spark plug boot resistor assembly
US20060009054A1 (en) * 2004-07-08 2006-01-12 Alcatel Cable connection assembly
US20090124115A1 (en) * 2007-11-09 2009-05-14 Fang-Chang Hsieh Strain Relief Collar for Accessories Associated with Mobile Device and Method of Making
US7614911B2 (en) * 2007-11-09 2009-11-10 Merry Electronics Co., Ltd. Strain relief collar for accessories associated with mobile device and method of making
WO2012022307A1 (de) * 2010-05-11 2012-02-23 Motortech Gmbh Herstellungsverfahren für elektrisches bauteil sowie elektrisches bauteil
US9004929B2 (en) 2010-05-11 2015-04-14 Motortech Gmbh Manufacturing method for electric component and electrical component
US20140154901A1 (en) * 2011-08-11 2014-06-05 Motortech Gmbh Spark plug connector
US9160120B2 (en) * 2011-08-11 2015-10-13 Motortech Gmbh Spark plug connector

Also Published As

Publication number Publication date
NL7316745A (de) 1974-06-18
DE2261103A1 (de) 1974-06-20
FR2210845A1 (de) 1974-07-12
JPS4987930A (de) 1974-08-22
JPS51245B2 (de) 1976-01-06
FR2210845B1 (de) 1976-10-08
GB1395139A (en) 1975-05-21

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KABELMETAL ELECTRO GMBH, KABELKAMP 20, 3000 HANNOV

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KABEL- UND METALLWERKE GUTEHOFFNUNGSHUTTE AG;REEL/FRAME:004284/0182