DE1003508B - Attachment of the insulator of a spark plug for internal combustion engines in the plug housing - Google Patents
Attachment of the insulator of a spark plug for internal combustion engines in the plug housingInfo
- Publication number
- DE1003508B DE1003508B DEB29156A DEB0029156A DE1003508B DE 1003508 B DE1003508 B DE 1003508B DE B29156 A DEB29156 A DE B29156A DE B0029156 A DEB0029156 A DE B0029156A DE 1003508 B DE1003508 B DE 1003508B
- Authority
- DE
- Germany
- Prior art keywords
- spark plug
- insulator
- plug housing
- housing
- sleeve
- 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.)
- Pending
Links
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
Landscapes
- Spark Plugs (AREA)
Description
Befestigung des Isolators einer Zündkerze für Brennkraftmaschinen im Kerzengehäuse Die Erfindung bezieht sich auf eine Zündkerze für Brennkraftmaschinen mit einem metallischen Kerzengehäuse, in das der Isolator für die Mittelelektrode zwischen den beiden Schultern eines Bundes fest und dicht eingespannt ist, sowie mit einer in das Kerzengehäuse eingeschraubten, den anschlußseitigen, aus dem Kerzengehäuse herausragenden Abschnitt des Isolators umgebende Abschirmhülse, deren zündseitiges Ende auf die anschlußseitige Einspannschulter des Isolators drückt.Fastening the insulator of a spark plug for internal combustion engines in the spark plug housing The invention relates to a spark plug for internal combustion engines with a metallic plug housing in which the insulator for the center electrode is clamped firmly and tightly between the two shoulders of a covenant, as well with one screwed into the spark plug housing on the connection side from the spark plug housing protruding portion of the insulator surrounding shielding sleeve, the ignition side End presses onto the clamping shoulder of the isolator on the connection side.
Bei den bisher bekannten Zündkerzen dieser Art ist die Abschirmhülse nach ihrem Einschrauben in das Kerzengehäuse dadurch gegen Verdrehen gesichert, daß sie mit dem Gehäuse verschweißt oder verlötet ist. Hierzu ist ein zusätzlicher Arbeitsgang notwendig.In the previously known spark plugs of this type, the shielding sleeve after being screwed into the spark plug housing secured against twisting, that it is welded or soldered to the housing. This is an additional Operation necessary.
Dieser Nachteil läßt sich vermeiden, wenn gemäß der Erfindung ein Abschnitt des Kerzengehäuses, der gegenüber der Ringfläche der eingeschraubten Abschirmhülse zwischen deren Einschraubgewinde und deren zündseitigem Ende liegt, durch Warmschrumpfen verkürzt ist.This disadvantage can be avoided if, according to the invention, a Section of the candle housing opposite the annular surface of the screwed-in shielding sleeve between its screw-in thread and its ignition-side end, by heat shrinking is shortened.
Das Warmschrumpfen von Kerzengehäusen ist an sich bekannt. Es wurde bisher bei Kerzen ohne Abschirmhülsen verwendet, um eine sichere Abdichtung zwischen Zündkerzenisolator und Gehäuse zu erreichen. Gemäß der Erfindung wird nun durch eine geeignete Anordnung des Warmschrumpfabschnitts bei Zündkerzen mit Abschirmhülse außer der sicheren Abdichtung noch ein Verdrehschutz für dieAbschirmhülse erzielt.The heat shrinking of candle housings is known per se. It was previously used for candles without shielding sleeves to ensure a secure seal between To reach spark plug insulator and housing. According to the invention is now through a suitable arrangement of the heat-shrinkable section in spark plugs with a shielding sleeve In addition to a secure seal, anti-twist protection is also achieved for the shielding sleeve.
In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt.The drawing shows an exemplary embodiment of the subject matter of the invention shown.
Fig. 1 zeigt eine erfindungsgemäße Kerze im Längsschnitt und Fig. 2 eine Ansicht der Abschirmhülse.Fig. 1 shows a candle according to the invention in longitudinal section and Fig. 2 is a view of the shielding sleeve.
Am zündseitigen Ende eines Zündkerzengehäuses 1 sind zwei Masseelektroden 2, 3 und ein Gewinde 4 zum Einschrauben der Kerze in den Zylinderkopf der Brennkraftmaschine angebracht. An seinem anschlußseitigen Ende besitzt es ein Einschraubgewinde 5, in das eine metallische Abschirmhülse 6 eingeschraubt ist, die an ihrem Anschlußende ein Gewinde 7 zum Anschließen einer nicht dargestellten abgeschirmten Zündleitung hat.At the ignition-side end of a spark plug housing 1 are two ground electrodes 2, 3 and a thread 4 for screwing the candle into the cylinder head of the internal combustion engine appropriate. At its connection-side end it has a screw-in thread 5, into which a metallic shielding sleeve 6 is screwed, which at its connection end a thread 7 for connecting a shielded ignition cable, not shown Has.
Zwischen dem zündseitigen Ende 8 der Abschirmhülse 6 und einer kegeligen Schulter 9 im Zündkerzengehäuse 1 ist ein Zündkerzenisolator 10 an seinem Bund 11 eingespannt. Der Isolator 10, in dem eine Mittelelektrode 12 und ein mit dieser in elektrisch leitender Verbindung stehender Anschlußnippel13 stecken, sitzt mit einem Dichtring 14 auf der Schulter 9 des Kerzengehäuses 1 auf.Between the ignition-side end 8 of the shielding sleeve 6 and a conical one Shoulder 9 in spark plug housing 1 is a spark plug insulator 10 on its collar 11 clamped. The insulator 10, in which a center electrode 12 and one with this Plug in an electrically conductive connection nipple13, sits with a sealing ring 14 on the shoulder 9 of the candle housing 1.
Um die nötige Kraft für eine sichere Abdichtung zwischen Gehäuse 1 und Isolator 10 zu erhalten, wird das Zündkerzengehäuse in bekannter Weise durch Warmschrumpfen verkürzt. Die Warmschrumpfstelle des Gehäuses 1 liegt gegenüber der Ringfläche der eingeschraubten Abschirmhülse 6 zwischen deren Einschraubgewinde und deren zündseitigem Ende B. Der sich beim Schrumpfen ergebende Ringwulst 15 umfaßt die Abschirmhülse 6 an der Schrumpfstelle fest und sichert sie gegen Verdrehen. Die Zone der Abschirmhülse 6, auf welche der Ringwulst 15 drückt, ist mit einer Rändelung 16 versehen. Dadurch wird die Sicherungswirkung erhöht, die notwendig ist, um zu verhindern, daß sich beim Anschließen oder Lösen der Abschirmleitung die Abschirmhülse gegen das Kerzengehäuse verdreht.In order to have the necessary force for a secure seal between the housing 1 and insulator 10, the spark plug housing is carried out in a known manner Shortened heat shrinking. The heat shrink point of the housing 1 is opposite the Annular surface of the screwed-in shielding sleeve 6 between its screw-in thread and its ignition-side end B. The annular bead 15 resulting from the shrinking comprises the shielding sleeve 6 at the shrinkage point and secures it against rotation. The zone of the shielding sleeve 6 on which the annular bead 15 presses is provided with a Knurling 16 provided. This increases the safety effect that is necessary is to prevent the shield cable from moving when connecting or disconnecting it twisted the shielding sleeve against the spark plug housing.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB29156A DE1003508B (en) | 1954-01-08 | 1954-01-08 | Attachment of the insulator of a spark plug for internal combustion engines in the plug housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB29156A DE1003508B (en) | 1954-01-08 | 1954-01-08 | Attachment of the insulator of a spark plug for internal combustion engines in the plug housing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1003508B true DE1003508B (en) | 1957-02-28 |
Family
ID=6962866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB29156A Pending DE1003508B (en) | 1954-01-08 | 1954-01-08 | Attachment of the insulator of a spark plug for internal combustion engines in the plug housing |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1003508B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2829918A1 (en) * | 1978-07-07 | 1980-01-24 | Bosch Gmbh Robert | SPARK PLUG FOR INTERNAL COMBUSTION ENGINES |
DE4028399A1 (en) * | 1990-09-07 | 1992-03-12 | Bosch Gmbh Robert | ELECTRIC, SPARK GENERATING DEVICE, ESPECIALLY FOR GASEOUS FUELS |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1609735A (en) * | 1922-08-09 | 1926-12-07 | Ac Spark Plug Co | Spark plug and method of making the same |
DE550659C (en) * | 1929-09-26 | 1932-05-23 | Ac Spark Plug Co | Machine for the simultaneous heating and pressing or upsetting of metallic workpieces between a pair of electrodes or machine for spot welding |
CH191930A (en) * | 1935-10-31 | 1937-07-15 | Bosch Robert Ag | Shielded spark plug for internal combustion engines. |
US2111916A (en) * | 1936-03-07 | 1938-03-22 | Electric Auto Lite Co | Spark plug |
FR854887A (en) * | 1938-05-18 | 1940-04-26 | Bosch Gmbh Robert | Spark plug |
GB520536A (en) * | 1937-11-27 | 1940-04-26 | Bosch Gmbh Robert | Improvements in or relating to sparking plugs |
DE702174C (en) * | 1938-10-04 | 1941-01-31 | Bosch Gmbh Robert | Spark plug shielded by a metallic cover |
DE715167C (en) * | 1939-07-29 | 1941-12-15 | Karl Bruening | Switching device for friction disc clutches |
GB564884A (en) * | 1942-08-11 | 1944-10-17 | Gen Motors Corp | Improvements relating to the manufacture of spark plugs |
GB571460A (en) * | 1944-05-26 | 1945-08-24 | Lodge Plugs Ltd | Improvements relating to sparking plugs for internal combustion engines |
US2409795A (en) * | 1944-04-17 | 1946-10-22 | Gen Motors Corp | Spark plug |
US2469211A (en) * | 1944-08-25 | 1949-05-03 | Gen Motors Corp | Sealing means and method for spark plugs |
DE815127C (en) * | 1948-10-02 | 1951-09-27 | Bosch Gmbh Robert | Process for connecting the individual parts of multi-part, flared spark plugs |
-
1954
- 1954-01-08 DE DEB29156A patent/DE1003508B/en active Pending
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1609735A (en) * | 1922-08-09 | 1926-12-07 | Ac Spark Plug Co | Spark plug and method of making the same |
DE550659C (en) * | 1929-09-26 | 1932-05-23 | Ac Spark Plug Co | Machine for the simultaneous heating and pressing or upsetting of metallic workpieces between a pair of electrodes or machine for spot welding |
CH191930A (en) * | 1935-10-31 | 1937-07-15 | Bosch Robert Ag | Shielded spark plug for internal combustion engines. |
US2111916A (en) * | 1936-03-07 | 1938-03-22 | Electric Auto Lite Co | Spark plug |
GB520536A (en) * | 1937-11-27 | 1940-04-26 | Bosch Gmbh Robert | Improvements in or relating to sparking plugs |
FR854887A (en) * | 1938-05-18 | 1940-04-26 | Bosch Gmbh Robert | Spark plug |
DE702174C (en) * | 1938-10-04 | 1941-01-31 | Bosch Gmbh Robert | Spark plug shielded by a metallic cover |
DE715167C (en) * | 1939-07-29 | 1941-12-15 | Karl Bruening | Switching device for friction disc clutches |
GB564884A (en) * | 1942-08-11 | 1944-10-17 | Gen Motors Corp | Improvements relating to the manufacture of spark plugs |
US2409795A (en) * | 1944-04-17 | 1946-10-22 | Gen Motors Corp | Spark plug |
GB571460A (en) * | 1944-05-26 | 1945-08-24 | Lodge Plugs Ltd | Improvements relating to sparking plugs for internal combustion engines |
US2469211A (en) * | 1944-08-25 | 1949-05-03 | Gen Motors Corp | Sealing means and method for spark plugs |
DE815127C (en) * | 1948-10-02 | 1951-09-27 | Bosch Gmbh Robert | Process for connecting the individual parts of multi-part, flared spark plugs |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2829918A1 (en) * | 1978-07-07 | 1980-01-24 | Bosch Gmbh Robert | SPARK PLUG FOR INTERNAL COMBUSTION ENGINES |
DE4028399A1 (en) * | 1990-09-07 | 1992-03-12 | Bosch Gmbh Robert | ELECTRIC, SPARK GENERATING DEVICE, ESPECIALLY FOR GASEOUS FUELS |
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