EP0406509A1 - Procédé pour fabriquer des éléments conducteurs isolés pour connecter des unités à des générateurs de signaux - Google Patents

Procédé pour fabriquer des éléments conducteurs isolés pour connecter des unités à des générateurs de signaux Download PDF

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Publication number
EP0406509A1
EP0406509A1 EP89830396A EP89830396A EP0406509A1 EP 0406509 A1 EP0406509 A1 EP 0406509A1 EP 89830396 A EP89830396 A EP 89830396A EP 89830396 A EP89830396 A EP 89830396A EP 0406509 A1 EP0406509 A1 EP 0406509A1
Authority
EP
European Patent Office
Prior art keywords
terminals
sheath
caps
metal tip
generator
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.)
Withdrawn
Application number
EP89830396A
Other languages
German (de)
English (en)
Inventor
Dante Baldini
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.)
UBALIT SpA
Original Assignee
UBALIT SpA
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 UBALIT SpA filed Critical UBALIT SpA
Publication of EP0406509A1 publication Critical patent/EP0406509A1/fr
Withdrawn legal-status Critical Current

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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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole

Definitions

  • the conducting core is covered with a sheath and/or one or more layers of insulating material.
  • the ends of the core are fixed to metal terminals which, by means of suitable metal tabs, are shaped in such a way as to make it possible for them to be fixed (connected) at the one end to the outer metal tang (metal tip) of the spark plug, and to be fixed at the other end to the corresponding metal tip to be found in the afore­mentioned generator of electric signals.
  • metal terminals are normally electrically insulated by means of the sheath and caps, which are both made in natural or synthetic rubbers, or in plastic materials.
  • each conductor element for transmitting electricity from the generator to the spark plug contains a metal core endpiece wound around its corresponding cylindrical shaped insulated support, which, in turn, is electrically insulated (the lead), two metal terminals (one for each end of the core) and two insulated caps (one for each terminal of the conductor element).
  • the final version of this invention consists of a plural number of separately produced components (lead, terminals, tabs, caps) that have been duly tested prior to assembly; the conductor element produced in this way is then also subjected to testing.
  • the caps In order to guarantee that the terminals are electrically insulated, the caps also have to be hermetically sealed against atmospheric humidity, the lead to be insulated, and the spark plug has to have ceramic insulation at the one end, and the lead to the signal generator to be insulated at the other end; it is for this purpose that the metal terminals and the leads, in particular, are forced into the axial holes connecting the cap cavities to the outside; since the diameter of said holes is smaller than that of the terminals and leads, the caps are frequently cut and/or damaged and consequently the conductor element has to be discarded.
  • the object of this invention is to propose a method that can be used for making insulated conductor elements performing the same functions as the aforementioned conductor elements, with improved manufacturing costs of the element and improved assembly times for mounting said elements onto internal combustion engines, by comparison with what is currently available on the market.
  • a further object of this invention is to propose insulated conductor elements that can be used to connect generators of electric signals to corresponding electric units without any radio interference, in such a way that only the slightest amount of rejects will be involved in their manufacture and assembly onto internal combustion engines, in such a way as to offer their corresponding terminals efficient protection against atmospheric humidity and lastly in such a way as to guarantee top performance in terms of the transmission of electricity from generator to spark plugs.
  • the component is preferably to be made in conducting silicon rubber.
  • the element proposed consists solely of a flexible electro-conductor component and an insulating sheath; the structural simplicity of the proposed element is obvious, it allows considerable savings to be made on the manufacturing costs, and is extremely practical in terms of electric performance, durability, protection against corrosive atmospheric agents and lack of radio interference.
  • Top electric performance is achieved because the component making the electric connections is manufactured as a single piece and its flexibility enables push connection of the terminals in question to the metal tips of either the electric charges or the generator, thus achieving reduced contact resistance for these connections, and consequently limiting current density, due to the large contact area between the terminals and metal tips.
  • sheath which is solid with and closely adhering to the cylindrical shaped portion of the component, and by the caps, closely adhering to the portions of said metal tips that are immediately outside in relation to the terminals of the component that the metal tips are connected to.
  • conducting silicon rubber enables a reduction in, or near elimination of, radio interference.
  • 1 represents a flexible electro-conductor component, preferably made of conducting silicon rubber and having the same powers of conductivity as well-known electric conductors.
  • This component consists of a cylindrical-shaped portion, 2, whose ends, with the latter, form a single piece, said terminals (obviously electro-conductors) being referred to as the first and second terminal respectively, and given reference numbers 3 and 4.
  • No. 5 refers to a flexible insulating sheath (made of a synthetic resin, such as silicon or synthetic rubber) which is solid to and adhering to said cylindrical shaped portion, 2, and which also adheres to said terminals, 3 and 4, by means of the corresponding caps, 6 and 7, referred to respectively as the first and second cap.
  • a flexible insulating sheath made of a synthetic resin, such as silicon or synthetic rubber
  • terminals 3 and 4 are to be smaller in cross section than caps 6 and 7 are.
  • the first cap, 6, closely adheres to the corresponding first terminal, 3, and the latter is centrally located on the seat, 8 (see Fig. 1).
  • FIG. 3 shows the second cap, 7, corresponding to the second terminal, 4.
  • the cross-­section of the second terminal, 4 is smaller in diameter than the inside diameter of the second cap, 7; thus constituting a circular seat, 9.
  • the method for making element, 100, in the way described, i.e. of making it from component, 1, and sheath, 5, involves the following operations being carried out in the following order : the moulding of the afore-mentioned flexible insulating sheath, 5, the surrounding of a corresponding first core (not shown in the diagram) with sheath complete with caps, 6 and 7; the extraction of the core from the sheath, 5; the location in the first and second caps, 6 and 7, of the sheath of a second and third core respectively (neither of which are shown in the diagram); the injection, into the through hole of sheath, 5, of a mixture of liquid at such a temperature as will not alter the physical and chemical properties of the sheath.
  • the subsequent solidifying of the mixture thus constitutes the combining of the sheath with the second and third cores to produce the flexible electro-­conductor component, 1, consisting of the cylindrical-­shaped portion, 2, forming the terminals, 3 and 4.
  • the surfaces of the sheath, 5, and component, 1, meet according to design and are joined together in one piece, so that in the terms of this invention, the component and the sheath constitute a single piece; this means that the formation of pockets of air between said surfaces can be avoided quite regardless of the values of mechanical stress and temperature, provided that these do not exceed the pre-determined limits the element will be subjected to during use.
  • Either seat, 8, designed for the second terminal, 4, in terms of the first version (Fig. 3), or the circular seat, 4, designed in terms of the second version (Fig. 2) are for interference-fit push connection, suited to the metal tips (which are not shown in the diagram) used in known generators of electric signals (such as coils, distributors and electronic ignition units); the previously mentioned advantages will also apply in this case.
  • the element 100 enables terminals 3 and 4 to be electrically connected to the corresponding metal tips of either an electric charge, on the one hand, or of a generator of electric signals, on the other hand; protection against humidity (more specifically against corrosive atmospheric agents) is offered by the caps 6 and 7 as each of the latter closely surrounds the portion of the electric tip (which is insulated if necessary like the spark plugs) immediately outside in relation to terminal 3 or 4, that said metal tip is connected to.
  • the element 100 has the same function as the conductor elements mentioned in the introduction, but unlike the latter, no assembly operations are required; furthermore the operations for mounting element 100 onto the engines of automobiles do not require any particular adjustments to be made and are facilitated by the push connection of terminals 3 and 4 to the metal tips.
  • the method proposed makes an insulated conductor element that can be perfectly matched to the corresponding metal tip, and which optimizes electric performance, insulation and protection against atmospheric humidity.

Landscapes

  • Ignition Installations For Internal Combustion Engines (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Spark Plugs (AREA)
EP89830396A 1989-06-09 1989-09-18 Procédé pour fabriquer des éléments conducteurs isolés pour connecter des unités à des générateurs de signaux Withdrawn EP0406509A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8903512A IT1233310B (it) 1989-06-09 1989-06-09 Metodo per la realizzazione di unita' conduttrici isolate colleganti elettricamente carichi elettrici con generatori di segnali elettrici e unita' ottenuta con tale metodo
IT351289 1989-06-09

Publications (1)

Publication Number Publication Date
EP0406509A1 true EP0406509A1 (fr) 1991-01-09

Family

ID=11108773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89830396A Withdrawn EP0406509A1 (fr) 1989-06-09 1989-09-18 Procédé pour fabriquer des éléments conducteurs isolés pour connecter des unités à des générateurs de signaux

Country Status (6)

Country Link
EP (1) EP0406509A1 (fr)
JP (1) JPH0395887A (fr)
KR (1) KR920002768B1 (fr)
BR (1) BR9002714A (fr)
CA (1) CA2018468A1 (fr)
IT (1) IT1233310B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997022167A1 (fr) * 1995-12-14 1997-06-19 Bruno Meroni Moyen pour connecter electriquement une bobine a une bougie d'un moteur a combustion interne alimente par de l'essence ou un melange similaire et destine a un vehicule
GB2311663A (en) * 1996-03-29 1997-10-01 Bremicker Auto Elektrik Conductive non-metallic spark plug connector element
EP1146601A2 (fr) * 2000-04-13 2001-10-17 Nexans Connexion flexible pour moyenne tension et son procédé de fabrication
EP1146600A1 (fr) * 2000-04-13 2001-10-17 Nexans Interconnection flexible moyenne tension et procédé de sa fabrication
US6648652B2 (en) * 2000-04-14 2003-11-18 International Business Machines Corporation Signal transmission connector and cable employing same
EP1598910A1 (fr) 2004-05-18 2005-11-23 Robert Bosch Gmbh Dispositif de connexion entre une bougie d'allumage et une bobine d'allumage
EP2796013A4 (fr) * 2011-12-22 2015-08-05 Moxtek Inc Tube à rayons x pour connecteur d'alimentation électrique
SE541409C2 (en) * 2017-06-19 2019-09-24 Sem Ab Spark plug extension

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435401A (en) * 1966-10-05 1969-03-25 Texas Instruments Inc Insulated electrical conductors
GB1292893A (en) * 1970-10-13 1972-10-18 Ford Motor Co Ignition leads

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435401A (en) * 1966-10-05 1969-03-25 Texas Instruments Inc Insulated electrical conductors
GB1292893A (en) * 1970-10-13 1972-10-18 Ford Motor Co Ignition leads

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997022167A1 (fr) * 1995-12-14 1997-06-19 Bruno Meroni Moyen pour connecter electriquement une bobine a une bougie d'un moteur a combustion interne alimente par de l'essence ou un melange similaire et destine a un vehicule
GB2311663A (en) * 1996-03-29 1997-10-01 Bremicker Auto Elektrik Conductive non-metallic spark plug connector element
FR2746974A1 (fr) * 1996-03-29 1997-10-03 Bremicker Auto Elektrik Connecteur de liaison
EP1146601A2 (fr) * 2000-04-13 2001-10-17 Nexans Connexion flexible pour moyenne tension et son procédé de fabrication
EP1146600A1 (fr) * 2000-04-13 2001-10-17 Nexans Interconnection flexible moyenne tension et procédé de sa fabrication
US6808403B2 (en) 2000-04-13 2004-10-26 Nexans Flexible medium voltage interconnection and method to obtain same
EP1146601A3 (fr) * 2000-04-13 2005-04-13 Nexans Connexion flexible pour moyenne tension et son procédé de fabrication
US6648652B2 (en) * 2000-04-14 2003-11-18 International Business Machines Corporation Signal transmission connector and cable employing same
EP1598910A1 (fr) 2004-05-18 2005-11-23 Robert Bosch Gmbh Dispositif de connexion entre une bougie d'allumage et une bobine d'allumage
EP2796013A4 (fr) * 2011-12-22 2015-08-05 Moxtek Inc Tube à rayons x pour connecteur d'alimentation électrique
SE541409C2 (en) * 2017-06-19 2019-09-24 Sem Ab Spark plug extension
US11225939B2 (en) 2017-06-19 2022-01-18 Sem Ab Spark plug extension

Also Published As

Publication number Publication date
JPH0395887A (ja) 1991-04-22
KR920002768B1 (ko) 1992-04-03
IT1233310B (it) 1992-03-26
KR910002058A (ko) 1991-01-31
BR9002714A (pt) 1991-08-20
CA2018468A1 (fr) 1990-12-09
IT8903512A0 (it) 1989-06-09

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