EP0463417B1 - Ignition device for combustion engines - Google Patents

Ignition device for combustion engines Download PDF

Info

Publication number
EP0463417B1
EP0463417B1 EP91109160A EP91109160A EP0463417B1 EP 0463417 B1 EP0463417 B1 EP 0463417B1 EP 91109160 A EP91109160 A EP 91109160A EP 91109160 A EP91109160 A EP 91109160A EP 0463417 B1 EP0463417 B1 EP 0463417B1
Authority
EP
European Patent Office
Prior art keywords
ignition
distributor
connection
component
ignition distributor
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
EP91109160A
Other languages
German (de)
French (fr)
Other versions
EP0463417A2 (en
EP0463417A3 (en
Inventor
Dieter Raff
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.)
OFFERTA DI LICENZA AL PUBBLICO;AL PUBBLICO
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0463417A2 publication Critical patent/EP0463417A2/en
Publication of EP0463417A3 publication Critical patent/EP0463417A3/xx
Application granted granted Critical
Publication of EP0463417B1 publication Critical patent/EP0463417B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6277—Snap or like fastening comprising annular latching means, e.g. ring snapping in an annular groove
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/02—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors
    • F02P7/021—Mechanical distributors
    • F02P7/022—Details of the distributor rotor or electrode
    • 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
    • H01R13/02—Contact members
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together

Definitions

  • the invention is based on an ignition system according to the preamble of claim 1.
  • a generic ignition system is known from DE-U_87 09 448.
  • the ignition system includes a high-voltage distributor, the electrodes of which are provided with connections as connecting bolts which, for connection to an ignition distributor connector, have wedge-shaped ring grooves in which the snap-in connection element fitted in the contact part of the ignition distributor connector can snap.
  • the wedge angle is dimensioned so that the latching connection element, which is designed in the form of a bow spring having a circular cross section, can disengage from the annular groove with a corresponding axial force on the ignition distributor connector, as a result of which the ignition distributor connector can be removed from the connection.
  • connection solution which has a higher level of functional reliability during operation, is unsatisfactory if it is considered from the point of view of an economically feasible repair of damaged ignition dishes.
  • the arrangement according to the invention with the characterized features of claim 1 has the advantage that the aforementioned shortcomings are avoided to a satisfactory extent and an ignition system is created with a connection solution between the high-voltage distributor and ignition distributor connector, which on the one hand has a high level of functional reliability in the operating state and on the other hand with one Damage to replace the defective parts enables the disconnection of the ignition distributor connector from the high-voltage distributor.
  • annular groove is attached to the connection of each electrode of the high-voltage distributor, into which the latching connection element of the ignition distributor connector initially snaps into place. This is then the functionally reliable connection position between the ignition distributor connector and the high-voltage distributor, which characterizes the normal operating state.
  • FIG. 1 shows, as part of an ignition system for internal combustion engines, a high-voltage distributor and associated ignition distributor connector
  • FIG. 2 latches the contact part of an ignition distributor connector on a connection of the high-voltage distributor and, in a modification of FIG. 2, on the one hand in FIG. 3 the contact part in mated condition and on the other hand in FIG 4 the contact part when removing from the connection of the high-voltage distributor.
  • the high-voltage distributor 11 shown in simplified form in FIG. 1 for a multi-cylinder internal combustion engine has a distributor cap 12, which is releasably placed on a distributor housing, not shown.
  • the distributor cap 12 carries a centrally arranged central electrode 13 and a number of fixed electrodes 14 corresponding to the number of cylinders of the internal combustion engine, which are arranged on a circular path concentric with the central electrode 13 at the same distance from one another.
  • the distributor cap 12 has spigot-shaped domes 16 which protrude parallel to the longitudinal axis 17 of the distributor cap 12.
  • domes 16 project as connections 19 cylindrical connecting bolts which are integrally connected to the central electrode 13 or to the fixed electrodes 14 and are accordingly also arranged together with the domes 16 coaxially to the longitudinal axis 17 or axially parallel on the concentric circular path.
  • Each of the connections 19 merges with an annular shoulder 18 into the larger electrodes 13, 14.
  • each of the connections 19 can be coupled to an ignition distributor plug 22.
  • the ignition distributor plug 22 has, at its end facing the dome 16, a sleeve-shaped contact part 26 which is designed as a connection opening 24 and which partly protrudes from a base body made of insulating material of the ignition distributor plug (22) in which it is held, and there from the circumference of one Wall 31 is limited.
  • the wall 31 is severed over part of the circumference by a slot 29 which is directed normal to the longitudinal axis 17.
  • a snap-in connection element 27 in the form of a bow spring is mounted such that it can spring open.
  • the latching connection element 27 projects into the contact part 26 with part of its circumferential extent.
  • FIG. 2 shows, partly in longitudinal section, the connection 19 and the contact part 26 of the ignition distributor connector 22 in the latching position which characterizes the operating state.
  • the connection 19 has a coaxial cylindrical section 34 starting from the shoulder 18.
  • a hollow cylindrical unlocking part 33 is placed as a sliding ring with an outer jacket 39, which in the locking position stands with one end face on the shoulder 18 and on the opposite end face extends over the entire radial extent of the unlocking part 33 has run-on chamfer 37, which forms a sliding angle 41 with respect to a normal 38 to the longitudinal axis, which is in a range between 30 degrees to 75 degrees and is 60 degrees in the exemplary embodiment.
  • a guide part 32 is placed on the section 34 at the end facing away from the section 18.
  • the guide part 32 consists of a cylindrical shaft 30 which is of hollow cylindrical design over a part length and with which it encloses the section 34 on the narrow side with an interference fit.
  • the other part of the shaft 30 axially projects beyond the section 34 and merges at the end into a frustoconical end section 21.
  • the outer diameter of the shaft 30 radially projects beyond the outer diameter of the section 34 by the wall thickness of the unlocking part 33 and forms a shoulder 35 on the front side facing the unlocking part 33, which shoulder is shaped such that it is complementary to the run-on slope 37.
  • the annular groove 28 is axially delimited by the shoulder 35 and the bevel 37, while the radial delimitation takes place via a groove base 36 which is formed by the lateral surface of the section 34.
  • the latching connection element 27 which is provided with a circular cross section, engages in the annular groove 28 and, lying on the groove base 36, projects beyond the outer diameter of the shaft 30 and the unlocking part 33 by almost the radius of its cross section.
  • An annular end face 43 of wall 31 facing shoulder 18 is separated from shoulder 18 by an axial distance 44 in the latched position shown.
  • a part attached to the distributor cap 12, for example a ring attached to the dome 16 can also be provided as a stop, which after its destruction likewise allows the ignition distributor connector 22 to be pushed in further beyond its snap-in position.
  • the end position resulting from plugging the ignition distributor connector 22 is shown in FIG. 3.
  • the snap-in connection element 27 is pushed with a partial area over the run-up slope 37 onto the outer jacket 39 of the unlocking part 33 and is connected to the latter by the resulting widening, with increased preload compared to the positioning in the annular groove 28.
  • the axial displacement of the distributor connector 22 is limited in this position by the stop of the end face 43 on the shoulder 18.
  • connection between the ignition distributor connector 22 and the connection 19 is thus broken and the ignition distributor connector 22 is thus disconnected from the high-voltage distributor 11.
  • the outer diameters of the shaft 30 and the unlocking part 33 can differ from one another, as long as, with a corresponding axial force and with a corresponding profile of the locking connection element 27, the partial area of the locking connection element 27 projecting through the slot 29 slides from the unlocking part 33 onto the Guide part 32 is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Zündanlage nach der Gattung des Anspruchs 1.The invention is based on an ignition system according to the preamble of claim 1.

Durch die DE-U_87 09 448 ist eine gattungsgemäße Zündanlage bekannt. Die Zündanlage beinhaltet einen Hochspannungsverteiler, deren Elektroden mit Anschlüssen als Anschlußbolzen versehen sind, die zum Verbinden mit jeweils einem Zündverteilerstecker keilförmige Ringnuten aufweisen, in denen das im Kontaktteil des Zündverteilersteckers angebrachte Rastverbindungselement einrasten kann. Der Keilwinkel ist dabei so dimensioniert, daß das Rastverbindungselement, das in Form einer, einen kreisförmigen Querschnitt aufweisenden Bügelfeder ausgebildet ist, bei entsprechender Axialkraft am Zündverteilerstecker wieder aus der Ringnut ausrasten kann, wodurch der Zündverteilerstecker von dem Anschluß abziehbar wird.A generic ignition system is known from DE-U_87 09 448. The ignition system includes a high-voltage distributor, the electrodes of which are provided with connections as connecting bolts which, for connection to an ignition distributor connector, have wedge-shaped ring grooves in which the snap-in connection element fitted in the contact part of the ignition distributor connector can snap. The wedge angle is dimensioned so that the latching connection element, which is designed in the form of a bow spring having a circular cross section, can disengage from the annular groove with a corresponding axial force on the ignition distributor connector, as a result of which the ignition distributor connector can be removed from the connection.

Bei einer ungewollten Ablösung des Zündverteilersteckers während des Betriebs der Zündanlage in Folge von Erschütterungen des Kraftfahrzeuges oder in Folge mangelhaften Aufsteckens des Zündverteilersteckers bei Wartungsarbeiten wird das Gemisch in dem zugehörigen Zylinder unverbrannt ausgestoßen und führt bei einem nachgeschalteten Katalysator zu dessen Überhitzung und Ausfall. Dies muß verhindert werden.In the event of an unwanted detachment of the ignition distributor plug during operation of the ignition system as a result of vibrations in the motor vehicle or as a result of inadequate insertion of the ignition distributor plug during maintenance work, the mixture in the associated cylinder is expelled unburned and, in the case of a downstream catalytic converter, leads to its overheating and failure. This must be prevented.

Würde jedoch dazu die Ringnut des Anschlusses derart ausgestaltet, daß nach Einrasten des Sicherungselements des Zündverteilersteckers in die Ringnut die Verbindung zwischen dem Zündverteilerstecker und dem zugeordneten Anschluß des Hochspannungsverteilers auch bei hoher Axialkraftbeaufschlagung am Zündverteilerstecker nicht mehr lösbar ist, so sind bei Schäden an der Zündanlage, beispielsweise durch Marderbiß am Isolierteil des Zündverteilersteckers oder an dem mit dem Zündverteilerstecker fest verbundenen Zündkabel, diese schadhaften Teile nur noch unter Zerstörung des Hochspannungsverteilers ausbaubar. Auch diese Verbindungslösung, die zwar im Betrieb eine höhere Funktionssicherheit aufweist, ist, wenn man sie unter dem Gesichtspunkt einer ökonomisch durchzuführenden Reparatur an einem geschädigten Zündgeschirr betrachtet, unbefriedigend.If, however, the ring groove of the connection were designed such that after the securing element of the ignition distributor connector has snapped into the ring groove, the connection between the ignition distributor connector and the associated connection of the high-voltage distributor can no longer be released even when the axial distributor connector is subjected to a high amount of axial force, damage to the ignition system For example, by marten bite on the insulating part of the ignition distributor connector or on the ignition cable firmly connected to the ignition distributor connector, these defective parts can only be removed by destroying the high-voltage distributor. This connection solution, which has a higher level of functional reliability during operation, is unsatisfactory if it is considered from the point of view of an economically feasible repair of damaged ignition dishes.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Anordnung mit den gekennzeichneten Merkmalen des Anspruchs 1 hat dem gegenüber den Vorteil, daß die zuvor erwähnten Unzulänglichkeiten in zufriedenstellendem Maß vermieden werden und eine Zündanlage mit einer Verbindungslösung zwischen Hochspannungsverteiler und Zündverteilerstecker geschaffen ist, die einerseits eine hohe Funktionssicherheit im Betriebszustand und andererseits bei einem Schadensfall zum Austausch der defekten Teile die Trennung des Zündverteilersteckers von dem Hochspannungsverteiler ermöglicht.The arrangement according to the invention with the characterized features of claim 1 has the advantage that the aforementioned shortcomings are avoided to a satisfactory extent and an ignition system is created with a connection solution between the high-voltage distributor and ignition distributor connector, which on the one hand has a high level of functional reliability in the operating state and on the other hand with one Damage to replace the defective parts enables the disconnection of the ignition distributor connector from the high-voltage distributor.

Dazu ist am Anschluß einer jeden Elektrode des Hochspannungsverteilers eine Ringnut angebracht, in die das Rastverbindungselement des Zündverteilersteckers zunächst einmal unlösbar einrastet. Dies ist dann die funktionssichere Verbindungslage zwischen Zündverteilerstecker und Hochspannungsverteiler, die den normalen Betriebszustand kennzeichnet.For this purpose, an annular groove is attached to the connection of each electrode of the high-voltage distributor, into which the latching connection element of the ignition distributor connector initially snaps into place. This is then the functionally reliable connection position between the ignition distributor connector and the high-voltage distributor, which characterizes the normal operating state.

Treten nun durch Marderbiß oder andere Beschädigungsmechanismen die vorerwähnten Schäden an der Isolierung des Zündverteilersteckers oder an dem mit ihm fest verbundenen Zündkabel auf, so ist nach Entfernen der Isolierung des Zündverteilersteckers, die ja ohnehin unbrauchbar geworden ist, nun die Möglichkeit gegeben, im Laufe einer dann möglichen, weiteren Einsteckbewegung des Zündverteilersteckers über ein Entriegelungsteil am Anschluß das Rastverbindungselement aus der Ringnut herauszuschieben und mit dem Verschließen der Ringnut das bewegliche Entriegelungsteil den Formschluß zwischen Zündverteilerstecker und Anschluß aufzuheben, so daß der beschädigte Zündverteilerstecker ohne Beschädigung des Hochspannungsverteilers demontiert und ausgewechselt werden kann.If the aforementioned damage to the insulation of the ignition distributor plug or to the ignition cable firmly connected to it now occurs due to a marten bite or other damage mechanisms, then after removing the insulation of the ignition distributor plug, which has already become unusable, there is now the possibility, in the course of one, of then possible, further insertion movement of the ignition distributor plug via an unlocking part on the connection, push the latching connection element out of the ring groove and by closing the ring groove the movable unlocking part cancels the positive connection between the ignition distributor plug and the connection, so that the damaged ignition distributor plug can be removed and replaced without damaging the high-voltage distributor.

In den Unteransprüchen sind vorteilhafte Maßnahmen für die Realisierung der Erfindung angegeben.Advantageous measures for realizing the invention are specified in the subclaims.

Zeichnungdrawing

Es zeigen Figur 1 als Teil einer Zündanlage für Brennkraftmaschinen einen Hochspannungsverteiler und damit verbundene Zündverteilerstecker, Figur 2 den Kontaktteil eines Zündverteilersteckers auf einem Anschluß des Hochspannungsverteilers verrastet und, in Modifizierung von Figur 2, einerseits in Figur 3 das Kontaktteil in überstecktem Zustand und andererseits in Figur 4 das Kontaktteil beim Abziehen von dem Anschluß des Hochspannungsverteilers.1 shows, as part of an ignition system for internal combustion engines, a high-voltage distributor and associated ignition distributor connector, FIG. 2 latches the contact part of an ignition distributor connector on a connection of the high-voltage distributor and, in a modification of FIG. 2, on the one hand in FIG. 3 the contact part in mated condition and on the other hand in FIG 4 the contact part when removing from the connection of the high-voltage distributor.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Der in Figur 1 ausschnittsweise vereinfacht dargestellte Hochspannungsverteiler 11 für eine mehrzylindrige Brennkraftmaschine weist eine Verteilerkappe 12 auf, die auf einem nicht mehr dargestellten Verteilergehäuse lösbar aufgesetzt ist. Die Verteilerkappe 12 trägt eine zentral angeordnete Mittelelektrode 13 und eine der Zylinderzahl der Brennkraftmaschine entsprechende Anzahl von Festelektroden 14, die auf einer zur Mittelelektrode 13 konzentrischen Kreisbahn im gleichen Abstand voneinander angeordnet sind. Die Verteilerkappe 12 weist stirnseitig stutzenförmige Dome 16 auf, die parallel zur Längsachse 17 der Verteilerkappe 12 abstehen.The high-voltage distributor 11 shown in simplified form in FIG. 1 for a multi-cylinder internal combustion engine has a distributor cap 12, which is releasably placed on a distributor housing, not shown. The distributor cap 12 carries a centrally arranged central electrode 13 and a number of fixed electrodes 14 corresponding to the number of cylinders of the internal combustion engine, which are arranged on a circular path concentric with the central electrode 13 at the same distance from one another. The distributor cap 12 has spigot-shaped domes 16 which protrude parallel to the longitudinal axis 17 of the distributor cap 12.

In die Dome 16 ragen als Anschlüsse 19 zylindrische Anschlußbolzen, die einstückig mit der Mittelelektrode 13 bzw. mit den Festelektroden 14 verbunden sind und dementsprechend ebenfalls zusammen mit den Domen 16 koaxial zur Längsachse 17 bzw. achsparallel auf der konzentrischen Kreisbahn angeordnet sind.In the domes 16 project as connections 19 cylindrical connecting bolts which are integrally connected to the central electrode 13 or to the fixed electrodes 14 and are accordingly also arranged together with the domes 16 coaxially to the longitudinal axis 17 or axially parallel on the concentric circular path.

Jeder der Anschlüsse 19 geht mit einem kreisringförmigen Absatz 18 in die im Durchmesser größeren Elektroden 13, 14 über.Each of the connections 19 merges with an annular shoulder 18 into the larger electrodes 13, 14.

Jeder der Anschlüsse 19 ist mit einem Zündverteilerstecker 22 koppelbar. Dazu weist der Zündverteilerstecker 22 an seinem dem Dom 16 zugewandten Ende ein als eine Anschlußöffnung 24 ausgebildetes hülsenförmiges Kontaktteil 26 auf, das zum Teil aus einem Grundkörper aus Isolierstoff des Zündverteilersteckers (22), in dem es gehalten wird, anschlußseitig herausragt und dort umfangseitig von einer Wandung 31 begrenzt ist.Each of the connections 19 can be coupled to an ignition distributor plug 22. For this purpose, the ignition distributor plug 22 has, at its end facing the dome 16, a sleeve-shaped contact part 26 which is designed as a connection opening 24 and which partly protrudes from a base body made of insulating material of the ignition distributor plug (22) in which it is held, and there from the circumference of one Wall 31 is limited.

Über einen Teil des Umfangs ist die Wandung 31 von einem, normal zu Längsachse 17 gerichteten Schlitz 29 durchtrennt. In diesem ist ein Rastverbindungselement 27 in Form einer Bügelfeder umfangsseitig auffederungsfähig gelagert. Im Bereich des Schlitzes 29 ragt das Rastverbindungselement 27 mit einem Teil seiner Umfangserstreckung in das Kontaktteil 26 hinein.The wall 31 is severed over part of the circumference by a slot 29 which is directed normal to the longitudinal axis 17. In this, a snap-in connection element 27 in the form of a bow spring is mounted such that it can spring open. In the area of the slot 29, the latching connection element 27 projects into the contact part 26 with part of its circumferential extent.

Bei dem in Figur 1 gezeigten gekoppelten Zustand zwischen Zündverteilerstecker 22 und Anschluß 19 ist die radiale Einfederung des in das Kontaktteil 26 ragenden Rastverbindungselement 27 begrenzt durch eine am Anschluß 19 vorhandene Ringnut 28.In the coupled state shown in FIG. 1 between the distributor connector 22 and the connector 19, the radial deflection of the in the contact part 26 projecting latching connection element 27 is delimited by an annular groove 28 provided at the connection 19

Der sich so ergebende Formschluß zwischen Rastverbindungselement 27 und Ringnut 28 kennzeichnet die Raststellung zwischen dem Zündkerzenstecker 22 und dem Anschluß 19.The resulting positive connection between the locking connecting element 27 and the annular groove 28 characterizes the locking position between the spark plug connector 22 and the connector 19.

Zugleich steht in dieser Raststellung ein den Dom 16 außen umfassender, mit dem Grundkörper verbundener Isolierkörper 23 mit seiner einen Anschlag 25 bildenden Stirnseite auf der Verteilerkappe 12 auf, wodurch der Einsteckweg des Zündverteilersteckers 22 auf den Anschluß 19 bei erfolgtem Einrasten des Rastverbindungselements 27 in die Ringnut 28 axial begrenzt wird.At the same time, in this latching position, an insulating body 23, which surrounds the dome 16 on the outside and is connected to the base body, with its end face which forms a stop 25, rests on the distributor cap 12, as a result of which the insertion path of the ignition distributor connector 22 to the connector 19 when the latching connecting element 27 has been latched into the annular groove 28 is axially limited.

In Figur 2 ist, teilweise längsgeschnitten, der Anschluß 19 und der Kontaktteil 26 des Zündverteilersteckers 22 in der den Betriebszustand kennzeichnenden Raststellung dargestellt. Der Anschluß 19 weist einen vom Absatz 18 ausgehenden gleichachsigen zylindrischen Abschnitt 34 auf. Um eine Teillänge des Abschnittes 34 ist mit Bewegungsspiel ein in der Grundform hohlzylindrisches Entriegelungsteil 33 als Gleitring mit einem Außenmantel 39 gelegt, das in der Raststellung mit einer Stirnseite auf dem Absatz 18 aufsteht und an der gegenüberliegenden Stirnseite eine sich über die ganze radiale Erstreckung des Entriegelungsteils 33 verlaufende Anschlaufschräge 37 aufweist, die gegenüber einer Normalen 38 zur Längsachse einen Gleitwinkel 41 bildet, der in einem Bereich zwischen 30 Grad bis 75 Grad liegt und bei dem Ausführungsbeispiel 60 Grad beträgt.FIG. 2 shows, partly in longitudinal section, the connection 19 and the contact part 26 of the ignition distributor connector 22 in the latching position which characterizes the operating state. The connection 19 has a coaxial cylindrical section 34 starting from the shoulder 18. Around a part of the length of the section 34, with a clearance, a hollow cylindrical unlocking part 33 is placed as a sliding ring with an outer jacket 39, which in the locking position stands with one end face on the shoulder 18 and on the opposite end face extends over the entire radial extent of the unlocking part 33 has run-on chamfer 37, which forms a sliding angle 41 with respect to a normal 38 to the longitudinal axis, which is in a range between 30 degrees to 75 degrees and is 60 degrees in the exemplary embodiment.

Auf dem Abschnitt 34 ist an dem, dem Absatz 18 abgewandten Ende, ein Führungsteil 32 aufgesetzt. Das Führungsteil 32 besteht aus einem zylindrischen Schaft 30, der über eine Teillänge hohlzylindrisch ausgebildet ist und mit dieser den Abschnitt 34 engseitig mit Preßpassung umschließt.A guide part 32 is placed on the section 34 at the end facing away from the section 18. The guide part 32 consists of a cylindrical shaft 30 which is of hollow cylindrical design over a part length and with which it encloses the section 34 on the narrow side with an interference fit.

Der andere Teil des Schaftes 30 überragt axial den Abschnitt 34 und geht endseitig in einen kegelstumpfförmigen Endabschnitt 21 über.The other part of the shaft 30 axially projects beyond the section 34 and merges at the end into a frustoconical end section 21.

Der Außendurchmesser des Schaftes 30 überragt radial den Außendurchmesser des Abschnittes 34 um die Wandstärke des Entriegelungsteils 33 und bildet an der dem Entriegelungsteil 33 zugewandten Stirnseite eine Schulter 35, die so ausgeformt ist, daß sie der Anlaufschräge 37 komplementär ist. Durch die Schulter 35 und die Anlaufschräge 37 ist die Ringnut 28 axial eingegrenzt, während die radiale Begrenzung über einen Nutgrund 36 erfolgt, der von der Mantelfläche des Abschnittes 34 gebildet ist.The outer diameter of the shaft 30 radially projects beyond the outer diameter of the section 34 by the wall thickness of the unlocking part 33 and forms a shoulder 35 on the front side facing the unlocking part 33, which shoulder is shaped such that it is complementary to the run-on slope 37. The annular groove 28 is axially delimited by the shoulder 35 and the bevel 37, while the radial delimitation takes place via a groove base 36 which is formed by the lateral surface of the section 34.

Im Bereich des Schlitzes 29 in der Wandung 31 ist das mit einem kreisförmigen Querschnitt versehene Rastverbindungselement 27 in die Ringnut 28 eingerastet und überragt, auf dem Nutgrund 36 aufliegend, den Außendurchmesser des Schaftes 30 und des Entriegelungsteils 33 um nahezu den Radius seines Querschnittes.In the area of the slot 29 in the wall 31, the latching connection element 27, which is provided with a circular cross section, engages in the annular groove 28 and, lying on the groove base 36, projects beyond the outer diameter of the shaft 30 and the unlocking part 33 by almost the radius of its cross section.

Eine dem Absatz 18 zugewandte kreisringförmige Stirnfläche 43 der Wandung 31 ist in der gezeigten Raststellung vom Absatz 18 durch einen axialen Abstand 44 getrennt.An annular end face 43 of wall 31 facing shoulder 18 is separated from shoulder 18 by an axial distance 44 in the latched position shown.

Nach Entfernen des in der Raststellung auf der Verteilerkappe 12 aufsitzenden, in der Figur 1 gezeigten Isolierkörpers 23 ist es möglich, den Zündverteilerstecker 22 zu überstecken, d. h. weiter als bis zur Raststellung auf den Anschluß 19 aufzuschieben. Statt dessen kann als Anschlag aber auch ein auf die Verteilerkappe 12 aufgestecktes Teil, zum Beispiel ein auf die Dome 16 aufgesteckter Ring vorgesehen werden, der nach seiner Zerstörung ebenfalls ein weiteres Einschieben des Zündverteilersteckers 22 über seine Einrastposition hinaus erlaubt.After removal of the insulating body 23 shown in FIG. 1 from the distributor cap 12 in the latched position, it is possible to plug the ignition distributor plug 22, ie to push it further onto the connector 19 up to the latched position. Instead, however, a part attached to the distributor cap 12, for example a ring attached to the dome 16, can also be provided as a stop, which after its destruction likewise allows the ignition distributor connector 22 to be pushed in further beyond its snap-in position.

Die aus dem Überstecken des Zündverteilersteckers 22 resultierende Endposition ist in Figur 3 dargestellt. Das Rastverbindungselement 27 ist mit einem Teilbereich über die Anlaufschräge 37 hinweg auf den Außenmantel 39 des Entriegelungsteils 33 aufgeschoben und mit diesem durch die dadurch erfolgte Aufweitung, mit, gegenüber der Positionierung in der Ringnut 28 erhöhten Vorspannung, kraftschlüssig verbunden. Die Axialverschiebung des Zündverteilersteckers 22 ist bei dieser Lage durch den Anschlag der Stirnfläche 43 auf den Absatz 18 begrenzt.The end position resulting from plugging the ignition distributor connector 22 is shown in FIG. 3. The snap-in connection element 27 is pushed with a partial area over the run-up slope 37 onto the outer jacket 39 of the unlocking part 33 and is connected to the latter by the resulting widening, with increased preload compared to the positioning in the annular groove 28. The axial displacement of the distributor connector 22 is limited in this position by the stop of the end face 43 on the shoulder 18.

Wird aus dieser Lage heraus der Zündverteilerstecker 22 axial rückläufig, dem Aufsteckvorgang entgegengerichtet, auf dem Anschluß 19 verschoben, erfolgt durch den Kraftschluß des Rastverbindungselements 27 auf dem Entriegelungsteil 33 eine gleichgerichtete Axialverschiebung des Entriegelungsteils 33, bis die Anlaufschräge 37 mit der Schulter 35 zur Deckung kommt und die Ringnut 28 schließt.If the ignition distributor plug 22 axially declines from this position, counteracts the push-on operation, is displaced on the connection 19, the non-positive engagement of the latching connection element 27 on the unlocking part 33 results in a rectified axial displacement of the unlocking part 33 until the run-up slope 37 comes to coincide with the shoulder 35 and the annular groove 28 closes.

Die zugehörige Lage ist in Figur 4 dargestellt. Die zylindrischen Außenabschnitte des Entriegelungsteils 33 und des Führungsteils 32 liegen mit gleichem Durchmesser direkt aneinander, so daß bei einer weiterführenden rückläufigen Bewegung des Zündverteilersteckers 22 der durch den Schlitz 29 ragende Teilbereich des Rastverbindungselements 27 auf den Schaft 30 des Führungsteils 32 übergleiten und schließlich auch von diesem abgezogen werden kann.The associated position is shown in Figure 4. The cylindrical outer sections of the unlocking part 33 and the guide part 32 lie directly against one another with the same diameter, so that when the ignition distributor plug 22 continues to move backwards, the portion of the latching connection element 27 projecting through the slot 29 slides onto the shaft 30 of the guide part 32 and finally also from the latter can be deducted.

Damit ist die Verbindung zwischen Zündverteilerstecker 22 und Anschluß 19 aufgehoben und damit der Zündverteilerstecker 22 vom Hochspannungsverteiler 11 getrennt.The connection between the ignition distributor connector 22 and the connection 19 is thus broken and the ignition distributor connector 22 is thus disconnected from the high-voltage distributor 11.

Alternativ können, abweichend vom beschriebenen Ausführungsbeispiel, die Außendurchmesser des Schaftes 30 und des Entriegelungsteils 33 voneinander abweichen, solange noch, bei entsprechender Axialkraft und bei entsprechendem Profil des Rastverbindungselements 27 ein Übergleiten des durch den Schlitz 29 ragenden Teilbereiches des Rastverbindungselements 27 vom Entriegelungsteil 33 auf den Führungsteil 32 möglich ist.Alternatively, in a departure from the exemplary embodiment described, the outer diameters of the shaft 30 and the unlocking part 33 can differ from one another, as long as, with a corresponding axial force and with a corresponding profile of the locking connection element 27, the partial area of the locking connection element 27 projecting through the slot 29 slides from the unlocking part 33 onto the Guide part 32 is possible.

Mit der beschriebenen Anordnung ist es möglich, eine unlösbare Verbindung zwischen Zündverteilerstecker 22 und Hochspannungsverteiler 11 nach Entfernen des Isolierkörpers 23 den Zündverteilerstecker 22 wieder lösbar zu machen und dadurch einen Austausch eines beschädigten Zündverteilersteckers 22 ohne eine Zerstörung des Hochspannungsverteilers 11 vorzunehmen.With the arrangement described, it is possible to make a non-detachable connection between the ignition distributor connector 22 and the high-voltage distributor 11 after removing the insulating body 23, the ignition distributor connector 22 again and thereby carry out an exchange of a damaged ignition distributor connector 22 without destroying the high-voltage distributor 11.

Claims (7)

  1. Ignition device for combustion engines, having a high-voltage distributor (11) which contains a distributor cap (12) made of insulating material with a centre electrode (13) and a plurality of fixed electrodes (14), which electrodes (13, 14) each have a connection (19), which connections (19) are each surrounded concentrically by a dome (16) which projects out of the distributor cap (12), having ignition distributor plugs (22) which can be plugged onto the electrodes (13, 14) and which, during this process, can be coupled, by in each case one contacting component (26) which can be inserted into the dome (16), to the connection (19) by means of a locking connection element (27), characterized in that each of the ignition distributor plugs (22) is surrounded by an insulating element (23) which surrounds the dome (16) externally, forms part of the base body of the ignition distributor plug (22) and bounds a plugging-in travel of the ignition distributor plug (22), during which travel the coupling by means of the locking connection element (27) takes place, by bearing against a spatially fixed part, connected to the distributor cap (12), while enclosing the dome (16), and an axially movable unlocking component (33) is provided on the connection (19), by means of which unlocking component (33) the locking connection element (27) can be moved, after removal of the insulating element (23) from the ignition distributor plug (22), in the course of a further plugging-in movement of the ignition distributor plug (22), out of its locking position in order to permit the ignition distributor plug (22) to be disconnected from the high-voltage distributor (11).
  2. Ignition device according to Claim 1, characterized in that the locking connection element (27) is formed by a clip spring which is capable of springing apart on the circumferential side and is mounted on the contacting component (26), and the contacting component (26) is a component which can be plugged over the connection (19) and is radially bounded by a wall (31) which has a partially circumferential slot (29) by means of which the locking connection element (27) projects with a part of its circumferential extent into an annular groove (28) on the connection (19) in the plugged-in position of the ignition distributor plug (22).
  3. Ignition system according to Claim 2, characterized in that the annular groove (28) is radially bounded by a groove bottom (36) which is formed by the outer surface of a cylindrical section (34) of the connection (19) and is axially bounded, on the one hand by a shoulder (35) which is mounted at the end of an ignition distributor plug side guide component (32) of the connection (19), which guide component (32) is mounted on the section (34) and projects beyond the latter axially and radially at least partially and, on the other hand, by an end-side run-up slope (37) of a sliding ring which is constructed as an unlocking component (33) and which can be displaced on the cylindrical section (34) between the shoulder (35) of the guide component (33) and a fixed step (18) and the locking connection element (27) can be pushed onto the unlocking component (33) and can be displaced together therewith after the destruction of the insulating element (23) or of the spatially fixed component.
  4. Ignition device according to Claim 3, characterized in that the run-up slope (37) extends from an external surface (39) of the unlocking component (33) as far as the groove bottom (36) and forms a sliding angle (41) with respect to a normal line (38) on a longitudinal axis (17) of the connection (19).
  5. Ignition system according to Claim 4, characterized in that the sliding angle (41) is between 30 degrees and 75 degrees.
  6. Ignition system according to Claim 5, characterized in that the shoulder (35) is complementary to the run-up slope (37).
  7. Ignition system according to Claim 6, characterized in that when the insulating element (23) is destroyed, the locking connection element (27) can be pushed onto the unlocking component (33) via the run-up slope (37) in the course of the further plugging-in movement of the ignition distributor plug (22) onto the connection (19), the unlocking component (33) can be displaced with the locking connection element (27) by frictional engagement when a reverse movement counter to the plugging-in movement occurs, and closes off the annular groove (28) when the run-up slope (37) dips into the shoulder (35), the locking connection element (27) can be pushed onto the guide component (32), and when there is a continued axial movement the positive engagement between the ignition distributor plug (22) and the connection (19) is eliminated.
EP91109160A 1990-06-23 1991-06-05 Ignition device for combustion engines Expired - Lifetime EP0463417B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4020022 1990-06-23
DE4020022A DE4020022A1 (en) 1990-06-23 1990-06-23 IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINES

Publications (3)

Publication Number Publication Date
EP0463417A2 EP0463417A2 (en) 1992-01-02
EP0463417A3 EP0463417A3 (en) 1994-01-19
EP0463417B1 true EP0463417B1 (en) 1996-09-25

Family

ID=6408926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109160A Expired - Lifetime EP0463417B1 (en) 1990-06-23 1991-06-05 Ignition device for combustion engines

Country Status (2)

Country Link
EP (1) EP0463417B1 (en)
DE (2) DE4020022A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232951A1 (en) * 1992-10-01 1994-04-07 Bosch Gmbh Robert Ignition equipment for IC engine - has locking connections element held part of stop by distributor cap deformed and fixed in releasing position when ignition distributor is rotated

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2022669A (en) * 1933-06-29 1935-12-03 Lincoln M Keefe Jack
US3659250A (en) * 1970-10-14 1972-04-25 Robert F Horton Electrical connector
DE3023288C2 (en) * 1980-06-21 1986-01-09 Robert Bosch Gmbh, 7000 Stuttgart Interference suppression plug for plugging onto the insulator of a spark plug or the mandrel of a distributor
US4631370A (en) * 1985-10-01 1986-12-23 Chrysler Motors Corporation Labyrinth for an ignition distributor cap and rotor assembly with atmospheric purging action
DE8709448U1 (en) * 1987-07-09 1987-08-27 Bremi Auto-Elektrik Bremicker Gmbh + Co, 5883 Kierspe, De

Also Published As

Publication number Publication date
DE59108217D1 (en) 1996-10-31
EP0463417A2 (en) 1992-01-02
EP0463417A3 (en) 1994-01-19
DE4020022A1 (en) 1992-01-02

Similar Documents

Publication Publication Date Title
EP0517004B1 (en) Electrically activated fuel injection valve and method of electrical contact
DE102005043044B4 (en) Ignition device for an internal combustion engine
DE3507525C1 (en) Electrical device plug
DE3211008A1 (en) Plug connector for coaxial cables
DE4329774A1 (en) Device for the fixing and securing of a valve
DE3920080C2 (en) Ignition device for an internal combustion engine
DE10007545A1 (en) High-voltage (HV) connection part structure of ignition device for combustion engine, has lock or fastening element arranged between HV connection terminals for limiting their relative movement
DE10213585A1 (en) Fuel supply device with an anti-slip element
DE102014219725A1 (en) Ignition coil with simplified contacting of a suppression device
EP0463417B1 (en) Ignition device for combustion engines
EP0888655B1 (en) Sparking plug connector for an internal combustion engine
DE2948043A1 (en) SPARK PLUG FOR INTERNAL COMBUSTION ENGINES
DE102019129436A1 (en) Conductive charging device with an improved centering device
DE4232951A1 (en) Ignition equipment for IC engine - has locking connections element held part of stop by distributor cap deformed and fixed in releasing position when ignition distributor is rotated
DE3109583A1 (en) Cable screw union
DE3810886A1 (en) Plug connector, especially for glow plugs
EP0373340B1 (en) Demountable connector for coupling of two optical fibers
EP0691502B1 (en) Quick coupling for pipes
DE3502112A1 (en) DEVICE FOR INJECTING FUEL INTO THE COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE
DE3502098A1 (en) FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
EP3399599B1 (en) Plug connector, connector and connector system
EP0225487B1 (en) Fuel injection nozzle for self-igniting internal-combustion engines in particular
DE2841676A1 (en) Coaxial receptacle with sleeve for outer conductor - has inner conductor contact with injected insulator between it and outer conductor sleeve
EP1628370B1 (en) Electrical connecting device
DE102004063293B4 (en) Fuel injector for an internal combustion engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT SE

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19940624

17Q First examination report despatched

Effective date: 19950606

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59108217

Country of ref document: DE

Date of ref document: 19961031

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19961204

REG Reference to a national code

Ref country code: GB

Ref legal event code: 746

Effective date: 19970326

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970527

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970625

Year of fee payment: 7

Ref country code: FR

Payment date: 19970625

Year of fee payment: 7

REG Reference to a national code

Ref country code: FR

Ref legal event code: D6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970819

Year of fee payment: 7

26N No opposition filed
ITPR It: changes in ownership of a european patent

Owner name: OFFERTA DI LICENZA AL PUBBLICO;AL PUBBLICO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980605

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980606

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980605

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990226

EUG Se: european patent has lapsed

Ref document number: 91109160.1

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050605