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DE759329C - Spark plug - Google Patents

Spark plug

Info

Publication number
DE759329C
DE759329C DES136462D DES0136462D DE759329C DE 759329 C DE759329 C DE 759329C DE S136462 D DES136462 D DE S136462D DE S0136462 D DES0136462 D DE S0136462D DE 759329 C DE759329 C DE 759329C
Authority
DE
Germany
Prior art keywords
spark plug
connection
metal
insulator
ceramic
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
Application number
DES136462D
Other languages
German (de)
Inventor
Charles Molyneux Carlington
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.)
K L G SPARKING PLUGS Ltd
Original Assignee
K L G SPARKING PLUGS Ltd
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 K L G SPARKING PLUGS Ltd filed Critical K L G SPARKING PLUGS Ltd
Application granted granted Critical
Publication of DE759329C publication Critical patent/DE759329C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00Sparking plugs
    • H01T13/20Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/34Sparking plugs characterised by features of the electrodes or insulation characterised by the mounting of electrodes in insulation, e.g. by embedding
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/023Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
    • C04B37/026Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of metals or metal salts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/20Seals between parts of vessels
    • H01J5/22Vacuum-tight joints between parts of vessel
    • H01J5/26Vacuum-tight joints between parts of vessel between insulating and conductive parts of vessel
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00Sparking plugs
    • H01T13/20Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/38Selection of materials for insulation
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/604Pressing at temperatures other than sintering temperatures
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/12Metallic interlayers
    • C04B2237/121Metallic interlayers based on aluminium
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32Ceramic
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40Metallic
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/52Pre-treatment of the joining surfaces, e.g. cleaning, machining
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/62Forming laminates or joined articles comprising holes, channels or other types of openings
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/64Forming laminates or joined articles comprising grooves or cuts
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/704Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the ceramic layers or articles
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/708Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the interlayers
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/72Forming laminates or joined articles comprising at least two interlayers directly next to each other
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/76Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/76Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
    • C04B2237/765Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc at least one member being a tube
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/78Side-way connecting, e.g. connecting two plates through their sides
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00Discharge tubes and lamps
    • H01J2893/0033Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0037Solid sealing members other than lamp bases
    • H01J2893/0041Direct connection between insulating and metal elements, in particular via glass material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00Seal for a joint or juncture
    • Y10S277/935Seal made of a particular material
    • Y10S277/939Containing metal
    • Y10S277/941Aluminum or copper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Spark Plugs (AREA)

Description

Zündkerze Die Erfindung bezieht sich auf eine Zündkerze mit einer Verbindung zwischen dem konisch ausgeführten keramischen Isolator und dem diesen umgebenden, ebenfalls. konischen Metallteil, die aus einem weichen, bei den an der Zündkerze herrschenden Temperaturen unschmelzib-aren Metall, wie Aluminium, besteht.Spark plug The invention relates to a spark plug having a Connection between the conical ceramic insulator and the latter surrounding, too. conical metal part, which consists of a soft, in the case of the Spark plug temperature prevailing infusible metal, such as aluminum, is made.

Es sind bereits Verbindungen keramischer und metallischer Bauteile von Zündkerzen bekannt, bei denen zwischen diesen Teilen eine weiche Metallschicht bzw. eine plastische Metallschicht angeordnet wird, in der Weise, daß auf den Isolator eine Kupferschicht auf elektrolytischem Wege aufgebracht wird, so däß sie mit vollkommener Anhaftung an dem Porzellanisolator verhärtet und daß diese Kupferschicht dann abgedreht und poliert wird. Ein solches Vorgehen ist jedoch nicht nur sehr umständlich und langwierig, sondern auch recht kostspielig und unwirtschaftlich, da dabei die Metallschicht verhältnismäßig dick sein muß, um die an ihr vorzunehmenden mechanischen Nachbearbeitungsmaßnahmen, auszuhalten, und ihr Baustoff zu einem erheblichen Teil abgedreht wird und damit in Verlust geht. Einfach eine lose Metallschicht zwischen den keramischen und metallischen Bauteilen anzuordnen, genügt wiederum nicht, um eine ausreichende Dichtung herbeizuführen.There are already connections between ceramic and metallic components known from spark plugs in which a soft metal layer between these parts or a plastic metal layer is arranged in such a way that on the insulator a copper layer is applied electrolytically, so that it is more perfect Adhesion to the porcelain insulator hardened and that this copper layer then turned off and is polished. However, such a procedure is not only very cumbersome and lengthy, but also quite costly and uneconomical, since it involves the metal layer relatively thick must be to the mechanical Post-processing measures, endure, and their building material to a significant extent is turned off and is thus lost. Just a loose metal layer in between To arrange the ceramic and metallic components is again not enough to create a sufficient seal.

Mit dem Vorschlag der Erfindung gelingt es demgegenüber auf außerordentlich einfache und wohlfeile Weise, bei Zündkerzen der eingangs erwähnten Art die bei solchen bisher auf Grund der nur schwer zu glättenden und genau zu bemessenden keramischen Oberflächen auftretenden Schwierigkeiten zu beseitigen und eine gasdichte Verbindung zwischen keramischen und metallischen Bauteilen zu erzielen, und zwar dadurch, daß man erfindungsgemäß diese Verbindung aus mindestens zwei Schichten von dünnen Folien bestehen läßt, deren jede Schicht dünner als 5,0 - 10-3 cm ist. Vorzugsweise werden hierbei in Weiterbildung der Erfindung die Folien etwa 7,5 # i o-4 cm dick gewählt.In contrast, the proposal of the invention succeeds extraordinarily simple and cheap way, with spark plugs of the type mentioned at the beginning such up to now due to the difficult to smooth and precisely dimensioned ceramic Eliminate surface difficulties and a gas-tight connection to achieve between ceramic and metallic components, namely that according to the invention, this compound consists of at least two layers of thin films can exist, each layer of which is thinner than 5.0-10-3 cm. Preferably be Here, in a further development of the invention, the foils are selected to be about 7.5 to 4 cm thick.

Bei einer Verbindung im Sinne der Erfindung erfolgt keine vollkommene Haftung zwischen dem weichen Metall, wie Aluminium o. dgl., und dem keramischen Baustoff und ist selbst dann, wenn die Kerze zusammengestellt worden ist und die Unregelmäßigkeiten des keramischen Baustoffes in die weiche Metallfolie aus Aluminium o. dgl. eingedrungen sind, der Grad der Verbindung zwischen Metall und keramischem Baustoff von einer gänzlich anderen Größenordnung als im Falle einer elektrolytisch abgelagerten Schicht. Trotzdem wird, wie schon erwähnt, eine gasdichte Verbindung erzielt und dürfte sich die Wirkung, an einer Schichtung von drei solchen dünnen Folien erläutert, etwa wie folgt erklären lassen.In the case of a connection within the meaning of the invention, there is no perfect connection Adhesion between the soft metal such as aluminum or the like and the ceramic Building material and is even if the candle has been put together and the Irregularities in the ceramic building material in the soft metal foil made of aluminum o. The like. Have penetrated, the degree of connection between metal and ceramic Building material of a completely different order of magnitude than in the case of an electrolytic one deposited layer. Nevertheless, as already mentioned, a gas-tight connection is achieved achieved and is likely to have the effect of a layering of three such thin ones Slides explained, for example as follows.

Die innerste Schicht wird von den Unregelmäßigkeiten des keramischen Werkstoffes durchdrungen. Die äußerste Schicht haftet an dem Metallteil und schafft so zusammen mit der zweckmäßig zusätzlich vorgesehenen dazwischenliegenden weiteren Schicht eine abstoßende gasdichte Verbindung zwischen innerster und äußerster Oberfläche. In diesem Sinne hat es seich in der Praxis sogar als besonders vorteilhaft erwiesen, etwa fünf solche vollständigen Schichten vorzusehen.The innermost layer is made up of the irregularities of the ceramic Material penetrated. The outermost layer adheres to the metal part and creates in this way together with the additional, expediently provided intervening Layer a repellent gas-tight connection between the innermost and the outermost surface. In this sense, it has even proven to be particularly advantageous in practice to provide about five such complete layers.

Bei alledem erhält die Zündkerze zweckmäß;igerweise einen. Metallkragen oder eine Metallmuffe, die mit ihr unter Verwendung der erfindungsgemäßen Verbindung gasdicht vereinigt ist. Die lösbare Verbindung zwischen Isolator und Kerzenkörper kann dann zwischen der Metallmuffe bzw. dem Metallkragen und dem Kerzenkörper bestehen. In der Zeichnung ist beispielsweise und schematisch die Herstellung einer gasdichten Verbindung im Sinne der Erfindung zwischen dem Isolator der Zündkerze und der ihn umgebenden Buchse veranschaulicht. Die Befestigung erfolgt in dem dargestellten Falle auf folgende Weise: Der Isolator io, der mit einem zapfhahnartigen Teil 18 versehen ist, wird mit ungefähr fünf Lagen einer Aluminiumfolie dicht umhüllt, die etwa 7,5 # io-4 cm dick ist. Die Folie i9 kann zunächst in der gewünschten ringförmigen Weise geschnitten werden, es kann aber auch der Teil 18 zunächst eingehüllt und die umhüllende Folie erst dann zu der gewünschten Größe beschnitten werden.With all of this, the spark plug appropriately receives one. Metal collar or a metal sleeve attached to it using the compound of the invention is combined gas-tight. The detachable connection between the insulator and the plug body can then exist between the metal sleeve or the metal collar and the candle body. In the drawing, for example and schematically, the production of a gas-tight Connection within the meaning of the invention between the insulator of the spark plug and him surrounding socket illustrates. The attachment takes place in the one shown Trap in the following way: The isolator io, which is fitted with a faucet-like part 18 is provided, is tightly wrapped with about five layers of aluminum foil, the is about 7.5 # io-4 cm thick. The foil i9 can initially be in the desired annular shape Way to be cut, but it can also be the part 18 initially wrapped and the enveloping film can only then be trimmed to the desired size.

Die Metallbuchse der Zündkerze hat einen Innenkonus, der dem Teil 18 entspricht. Er wird auf den foalienbedeckten Teil des Isolators unter genügendem Druck, z. B. einem solchen von i8o kg oder auch mehr, aufgepreßt. Die Wandstärke dieser Metallbuchse ist dabei vorzugsweise so dünn, daß sie sich während des Druckvorganges ausdehnt, wodurch die Folie sich eng zwischen sie und den Keramikisolator legt. Auf diese Weise wird eine vorzügliche gasdichte Verbindung zwischen der Buchse und dem Isolator erreicht. Die Verbindung zwischen der Buchse und der ihr anliegenden Isolatorschulter kann leicht durch entsprechendes Bearbeiten der einander berührenden Flächen gasdicht gemacht werden. Die gasdichte Verbindung zwischen dem Isolator und den Folien einerseits und den Folien und der Buchse andererseits wird durch den Druck des Zündkerzenrohres auf die Schulter 17 des Isolators aufrechterhalten.The metal socket of the spark plug has an inner cone that the part 18 corresponds. It is placed on the foalien-covered part of the isolator under sufficient Pressure, e.g. B. one of 180 kg or more, pressed on. The wall thickness this metal sleeve is preferably so thin that it is during the printing process expands, causing the foil to fit snugly between it and the ceramic insulator. In this way an excellent gas-tight connection between the socket and reached the isolator. The connection between the socket and the one adjacent to it Isolator shoulder can be easily removed by appropriately editing the touching one Surfaces are made gas-tight. The gas-tight connection between the insulator and the foils on the one hand and the foils and the socket on the other hand is through maintain the pressure of the spark plug tube on the shoulder 17 of the insulator.

Obgleich die Zeichnung nur einen Isolator mit zapfenartigem Fortsatz 18 zeigt, auf welchen die Folie aufgelegt wird, so ist der Erfindungsgedanke doch auch anwendbar auf Isolatoren mit parallelen Flächen. Ein Kragen oder eine Muffe kann, zur Herstellung der Verbindung auf die folienbedeckten Teile aufgezogen werden oder auch herunterhängen.Although the drawing only shows an insulator with a peg-like extension 18 shows on which the film is placed, that is the idea of the invention also applicable to insulators with parallel faces. A collar or a sleeve can be pulled onto the foil-covered parts to establish the connection or hang down.

Die Erfindung ermöglicht weiterhin auch die Erzielung einer gasdichten Verbindung zwischen dem elektrischen Kontakt der Zündkerze und dem oberen Ende des Isolators io. Diese wird durch einen Stapel von Unterlagscheiben. 2o aus dünner Aluminium- o. dgl. Folie erreicht, wie es oben beschrieben ist. Sie werden aufgelegt, bevor der elektrische Kontakt in den. Isolator eingeschraubt wird.The invention also makes it possible to achieve a gas-tight one Connection between the electrical contact of the spark plug and the upper end of the Isolator ok This is done by a stack of washers. 2o from thinner Aluminum or the like. Achieved foil, as described above. You are hung up before the electrical contact in the. Insulator is screwed in.

Claims (2)

PATENTANSPRÜCHE: i. Zündkerze mit einer Verbindung zwischen dem konisch ausgeführten keramischen Isolator und dem diesen umgebenden, ebenfalls konischen Metallteil, die aus einem weichen, bei den an der Zündkerze herrschenden Temperaturen unschmelzbaren Metall, wie Aluminium, besteht, dadurch gekennzeichnet, daß diese Verbindung aus mindestens zwei Schichten von dünnen Folien besteht, woben jede Schicht dünner als 5,o- io-s cm ist. PATENT CLAIMS: i. Spark plug with a connection between the conical executed ceramic insulator and the surrounding, also conical Metal part, the one from a soft one, with the one prevailing on the spark plug Temperatures infusible metal, such as aluminum, is characterized by that this connection consists of at least two layers of thin foils, woben each layer is thinner than 5, o-io-s cm. 2. Zündkerze nach Anspruch i, dadurch gekennzeichnet, daß die Folien etwa 7,5 # io-4 cm dick sind.2. Spark plug according to claim i, characterized characterized in that the foils are about 7.5 # io-4 cm thick.
DES136462D 1938-05-12 1939-03-24 Spark plug Expired DE759329C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14235/38A GB514661A (en) 1938-05-12 1938-05-12 Improvements in joints for ceramic materials

Publications (1)

Publication Number Publication Date
DE759329C true DE759329C (en) 1951-08-02

Family

ID=10037474

Family Applications (1)

Application Number Title Priority Date Filing Date
DES136462D Expired DE759329C (en) 1938-05-12 1939-03-24 Spark plug

Country Status (4)

Country Link
US (1) US2174913A (en)
DE (1) DE759329C (en)
FR (1) FR852280A (en)
GB (1) GB514661A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489410A (en) * 1946-11-25 1949-11-29 Lewis F Hahn Shielded spark plug
US2701839A (en) * 1949-02-05 1955-02-08 Sherbinin William N De Bottle or vase attached lamp support

Also Published As

Publication number Publication date
US2174913A (en) 1939-10-03
FR852280A (en) 1940-01-27
GB514661A (en) 1939-11-14

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