EP0548922A2 - Elément électrique conducteur et sa méthode de fabrication - Google Patents

Elément électrique conducteur et sa méthode de fabrication Download PDF

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Publication number
EP0548922A2
EP0548922A2 EP19920121817 EP92121817A EP0548922A2 EP 0548922 A2 EP0548922 A2 EP 0548922A2 EP 19920121817 EP19920121817 EP 19920121817 EP 92121817 A EP92121817 A EP 92121817A EP 0548922 A2 EP0548922 A2 EP 0548922A2
Authority
EP
European Patent Office
Prior art keywords
insulator
glass
bore
conductor
parts
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Withdrawn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
EP19920121817
Other languages
German (de)
English (en)
Other versions
EP0548922A3 (fr
Inventor
Werner Niessner
Uwe Behr
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.)
BERU Ruprecht GmbH and Co KG
Beru Werk Albert Ruprecht GmbH and Co KG
Original Assignee
BERU Ruprecht GmbH and Co KG
Beru Werk Albert Ruprecht GmbH and Co KG
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 BERU Ruprecht GmbH and Co KG, Beru Werk Albert Ruprecht GmbH and Co KG filed Critical BERU Ruprecht GmbH and Co KG
Publication of EP0548922A2 publication Critical patent/EP0548922A2/fr
Publication of EP0548922A3 publication Critical patent/EP0548922A3/xx
Withdrawn legal-status Critical Current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
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/36—Sparking plugs characterised by features of the electrodes or insulation characterised by the joint between insulation and body, e.g. using cement

Definitions

  • the invention relates to an electrically conductive component, in particular an electrode element, a spark plug, an electrical feedthrough or a resistance element and a method for its production.
  • Such conventional components consist of a ceramic insulator penetrated by an inner bore and a central electrode, the central electrode being fastened in the bore of the insulator with putty, adhesive, resin, etc.
  • This has the disadvantage that the insulator-electrode connection has insufficient mechanical strength (torsion, pull-out values).
  • Such connections also meet not the requirement regarding temperature resistance.
  • the production is also very expensive because putty-smeared parts have to be cleaned and the waste water is contaminated with putty powder, which means that a sales basin is required.
  • the object of the invention is to provide an inexpensive, electrically conductive component, in particular an electrode element, a spark plug, an electrical feedthrough or a resistance element, which meets the requirements with regard to mechanical strength and adjustability of its electrical parameters, in particular its resistance, and the temperature resistance Fulfills.
  • the invention also provides a method for producing such a component.
  • the electrically conductive component according to the invention is characterized in that the glass melt is formed from a pre-pressed and pre-sintered glass granulate part.
  • the method according to the invention in which at least one bore is provided in the insulator and the two conductor parts are connected and fixedly arranged in the bore via a glass melt-in, is characterized in that a pre-pressed and pre-sintered glass granulate part is arranged between the conductor parts in the bore for the glass melt-in , the arrangement thus formed is heated approximately to the melting temperature of the glass granulate part, the conductor parts are pressed against one another, whereby an electrical contact is made between the conductor parts, and then the melted glass produced in this way is allowed to cool in the insulator.
  • a particularly preferred embodiment of the method according to the invention is the subject of claim 7.
  • the glass granulate part used for melting the glass can have different electrical conductivities.
  • an ignition electrode device e.g. a spark plug
  • an electrically highly conductive glass is generally used.
  • an ignition electrode with a smooth bore is shown. It comprises an insulator 1, a two-part center electrode 2, 4 and a glass melt 3.
  • the glass melt serves to electrically connect the two electrode parts to one another and to fasten them in the insulator 1 and is formed from a pre-pressed and pre-sintered glass granulate part.
  • the distance between the two electrode parts 2, 4 can be varied. Depending on the size of the distance and the type of glass used (positive or negative temperature coefficient, specific resistance), different resistance values are obtained between the electrode parts 2, 4. In particular, the electrode parts can touch. In this case, the glass melt-in does not represent any resistance. You can also create a low-resistance passage ( ⁇ 100 m ⁇ ) by using highly conductive glass.
  • high-resistance glass enables high-strength, high-voltage-resistant resistors with low inductance and, due to the precise metering options of the glass, low resistance scatter. In this way, ignition electrodes with interference suppression or erosion resistance can be produced. Typical values would be, for example 1 or 5 k ⁇ for 25 W continuous load ( ⁇ 2 mm connecting parts, ⁇ 6 mm ceramic tube outer diameter, ceramic length 50 mm). Both low-resistance and high-resistance ignition electrodes with interference suppression are used in oil and gas burners.
  • FIG. 2 shows, according to one of the preferred embodiments of the invention, a glass resistor 6 in an insulator (ceramic tube) which is formed by the glass melting.
  • FIG. 3 and 4 show special designs of the component according to the invention.
  • the bore is provided with a shoulder 7 on which a conductor part provided with a wider head 8 at one end is brought to rest.
  • the isolator in Fig. 4 has two conductor or Electrode bores 9, 10 with corresponding conductors.
  • FIG. 5 shows a further special embodiment, in which a ceramic semiconductor 5 (resistor, varistor) is fused between the electrode parts 2, 4.
  • a ceramic semiconductor 5 resistor, varistor
  • FIG. 6 shows a resistance meltdown 6a of a steel jacket spark plug (fully shielded spark plug).
  • the use of the sintered glass 3 replaces complex metering devices for powdered glass granulate.
  • the method thus also offers advantages in the production of spark plugs, the center electrode of which consists of two parts (see FIG. 6).
  • the conventional method for connecting these parts involves the melting of powdered glass granules.
  • special measures must be taken to protect the insulating section, since the glass granulate can leave conductive traces.
  • These protective measures can be dispensed with when using a pre-sintered, pre-pressed glass granulate part, since this hardly leaves any conductive traces on the insulator insulation section.

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  • Spark Plugs (AREA)
EP19920121817 1991-12-24 1992-12-22 Elément électrique conducteur et sa méthode de fabrication Withdrawn EP0548922A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142982 1991-12-24
DE19914142982 DE4142982A1 (de) 1991-12-24 1991-12-24 Elektrisch leitendes bauelement und verfahren zu seiner herstellung

Publications (2)

Publication Number Publication Date
EP0548922A2 true EP0548922A2 (fr) 1993-06-30
EP0548922A3 EP0548922A3 (fr) 1994-01-19

Family

ID=6448140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920121817 Withdrawn EP0548922A2 (fr) 1991-12-24 1992-12-22 Elément électrique conducteur et sa méthode de fabrication

Country Status (2)

Country Link
EP (1) EP0548922A2 (fr)
DE (1) DE4142982A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10004424C2 (de) * 2000-02-02 2003-10-23 Beru Ag Zündkerze
DE102015214057B4 (de) 2015-07-24 2017-12-28 Ford Global Technologies, Llc Verfahren zur Herstellung einer Zündkerze mittels einer mit Pulver befüllten Kapsel sowie Zündkerze

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB545069A (en) * 1940-07-03 1942-05-08 Gen Motors Corp Improved spark plug
GB553686A (en) * 1942-02-26 1943-06-01 Lodge Plugs Ltd Improvements relating to sparking plugs
GB2085521A (en) * 1980-10-16 1982-04-28 Feaster James Louis Spark plugs
US5022881A (en) * 1985-07-19 1991-06-11 Cooper Industries, Inc. Method for making a spark plug with a predetermined spark gap

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB545069A (en) * 1940-07-03 1942-05-08 Gen Motors Corp Improved spark plug
GB553686A (en) * 1942-02-26 1943-06-01 Lodge Plugs Ltd Improvements relating to sparking plugs
GB2085521A (en) * 1980-10-16 1982-04-28 Feaster James Louis Spark plugs
US5022881A (en) * 1985-07-19 1991-06-11 Cooper Industries, Inc. Method for making a spark plug with a predetermined spark gap

Also Published As

Publication number Publication date
DE4142982A1 (de) 1993-07-01
EP0548922A3 (fr) 1994-01-19

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