EP2625421A1 - Ignition coil with a reduced number of components - Google Patents

Ignition coil with a reduced number of components

Info

Publication number
EP2625421A1
EP2625421A1 EP11760508.9A EP11760508A EP2625421A1 EP 2625421 A1 EP2625421 A1 EP 2625421A1 EP 11760508 A EP11760508 A EP 11760508A EP 2625421 A1 EP2625421 A1 EP 2625421A1
Authority
EP
European Patent Office
Prior art keywords
winding
bobbin
ignition coil
channel
coil according
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.)
Granted
Application number
EP11760508.9A
Other languages
German (de)
French (fr)
Other versions
EP2625421B1 (en
Inventor
Konstantin Lindenthal
Tim Skowronek
Alwin Stegmaier
Gennaro Romano
Thomas Pawlak
Florian Herzog
Sebastian Hoffmann
Kazim Kahraman
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.)
Robert Bosch GmbH
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 EP2625421A1 publication Critical patent/EP2625421A1/en
Application granted granted Critical
Publication of EP2625421B1 publication Critical patent/EP2625421B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications

Definitions

  • the present invention relates to an ignition coil for an internal combustion engine with a reduced number of components.
  • an ignition coil which has a suppression element for damping the electrical interference energy which occurs during ignition of the spark plug.
  • the suppression element is designed as an inductance in the axial direction of the ignition coil and is at least partially formed from the winding wire.
  • this known ignition coil is suitable only for pencil ignition coils and not for Kompaktzündspulen.
  • a winding start, the so-called cold side, and a winding end, the so-called hot side each connected to a Anbindepfosten of metal and welded by means of a ferrule.
  • an additional contact plate is needed for the production of a high voltage contact between the Anbindepfosten at the coil end and a suppression resistor.
  • the ignition coil according to the invention for an internal combustion engine with the
  • thermo-mechanical stresses in the ignition coil can be reduced. This has a positive effect on the service life of the ignition coil. According to the invention this is achieved in that the ignition coil from a bobbin and a coil a winding wire comprises.
  • the bobbin includes a channel which extends below the Wcklung and in which a part of the winding wire is guided. This makes it possible according to the invention that the Wcklungsdraht no longer needs to be wound in succession, but can be guided through the channel in the bobbin to any position. Individual winding sections can thus in any way
  • the bobbin comprises a plurality of coil chambers, wherein in each case one winding section of the winding is arranged in a coil chamber.
  • the channel runs in the bobbin below at least one of the coil chambers.
  • Spool be performed to any bobbin, which is no longer immediately adjacent to a newly wound bobbin.
  • the package comprises a first and a second
  • Winding area each comprising a plurality of winding sections.
  • the first Waklungs Scheme extends from an outermost coil chamber at a first end portion of the bobbin to a first inner
  • the second area of descent extends from one extreme
  • the spooling wire runs from the first inner spool chamber of the first spotting area through the channel formed in the spool body to the outermost spotting chamber of the second winding area.
  • the bobbin comprises an odd number of
  • Coil chambers This makes it possible that in particular a distance between the first and second Wcklungs Hoch is possible.
  • a middle coil chamber without winding is particularly preferably formed, so that a simple, symmetrical design of the ignition coil is possible. More preferably, the channel begins in the bobbin at the middle
  • the ignition coil further comprises an integral high-voltage outlet which projects in a pin-like manner from an outer circumference of the bobbin.
  • the integration of the high voltage output directly to the bobbin direct contact of a spark plug can be done on the high voltage outlet, so that on the hot side of the Wcklungsdrahts on a Anbindepfosten, a
  • Wire end ferrule and an additional separate high voltage contact part can be omitted.
  • the high voltage output is designed as a suppression element, in which the Wcklungsdraht from the last coil chamber for
  • High voltage output is wound around.
  • a high-voltage outlet with integrated suppressor element can be integrally formed on the bobbin.
  • the high-voltage outlet is arranged on a lying in the longitudinal direction of the bobbin central region.
  • the bobbin according to the invention can be used in particular in Kompaktzündspulen.
  • the channel in the bobbin is not parallel to a longitudinal axis of the bobbin. That is to say, in a projection into a plane comprising the longitudinal axis of the bobbin, the channel intersects the longitudinal axis. As a result, a simpler guidance of the Waklungsdrahts be ensured.
  • FIG. 1 shows a schematic side view of an ignition coil according to an embodiment of the invention
  • Figure 2 is a schematic sectional view of the ignition coil of Figure 1.
  • the ignition coil 1 comprises a coil body 2 with a cylindrical base region, on the outside of which at least three, for example a plurality of coil chambers 21, 22, 23, 24,
  • the ignition coil has a Wcklung 9, which comprises a first Wcklungs Scheme 17 and a second winding region 18, wherein the two
  • the winding wire of the winding 9 extends from an end facing away from the second heat-sealing region 17 to an end facing the second winding region 17.
  • the Wcklungsdraht continues to run in the second winding region 18 of the first winding region 17 facing away from the first Wcklungs Scheme 17 end facing.
  • a middle coil chamber 27 which has a high-voltage outlet 5 and no cooling section, is provided between the first heat-dissipating area 17 and the second winding area 18.
  • the channel 4 is formed for example as a groove-shaped recess in the bobbin 2.
  • the coil chambers 21, 22,23,24,25,26 are in the axial direction of
  • the Wcklungsdraht inserted into the channel 4 can be, runs the channel 4 slit through the dividing walls therethrough.
  • the first winding region 17 has at least one winding section 1 1, 12, 13 and the second winding section 17 at least one winding section 14, 15, 16, wherein each winding section 1 1, 12, 13, 14, 15, 16 of the winding 9, for example, in a separate Spool chamber 21, 22, 23, 24, 25, 26 is arranged.
  • the Wcklung 9 can begin at a contact element 3.
  • the Wcklung 9 is several times wrapped around the pin-like contact element 3.
  • the winding 9 is made of a relatively thin spiked wire, preferably copper.
  • the Wcklung 9 includes, for example, a plurality of winding sections 11, 12, 13, 14, 15, 16.
  • the ignition coil 1 comprises the high-voltage outlet 5. Due to the odd number of coil chambers, the high-voltage outlet 5 can be arranged on the middle coil chamber 27, so that a symmetrical structure is achieved. At the middle bobbin 27, no winding section is formed.
  • the bobbin 1 comprises a first end portion 28 and a second end portion 29.
  • the channel 4 is provided, which starts at the middle bobbin 27 and under the three
  • Spool chambers 24, 25, 26 is guided and ends at the second end portion 29 of the bobbin 2.
  • the high-voltage outlet 5 is arranged in the longitudinal direction X-X of the bobbin 2 in the central region. Further, the channel 4 is formed such that in a projection on a plane which comprises the longitudinal axis X-X of the bobbin 2, the channel 4 intersects the longitudinal axis X-X.
  • the first winding region 17 comprises the three Wcklungsabête 11, 12, 13 and the second winding region 18 includes the three Wcklungsabroughe 14, 15, 16.
  • the Wcklung 9 is designed such that, starting from the contact element 3, the winding wire 10 first, the winding section 1 1, then the winding section 12 and then the Wcklungsabêt 13 forms and from the winding section 13 is guided in the channel 4.
  • the spooling wire 10 is wound around a core 6 several times to form a suppression element. So that's it
  • the core 6 may have any shape, according to a desired application (long, short, wide, narrow), and that the winding wire in any number of windings, which are required for the suppression of the ignition coil, around the core can be wrapped around.
  • the number of components, in particular at the hot end in the region of the high-voltage outlet 5, can be significantly reduced in comparison with the prior art. Furthermore, the inventive
  • Winding portion 16 is disposed near the center of the bobbin 2.
  • the Wcklung 9 described in the embodiment is designed in particular as a secondary winding of the ignition coil.
  • the bobbin according to the invention is also particularly suitable for use in
  • winding sections 17, 18 also without
  • Spool chambers can be easily wound on the bobbin with a certain distance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

The invention relates to an ignition coil for an internal combustion engine, comprising a coil former (2) with a contact element (3) and a high-voltage outgoing line (5), and a winding (9) comprising a winding wire (10) which is arranged on the coil former (2), wherein the coil former (2) comprises a large number of coil chambers (21, 22, 23, 24, 25, 26), and wherein in each case one winding section (11, 12, 13, 14, 15, 16) of the winding (9) is arranged in a coil chamber, wherein the coil former (2) comprises a slot-like channel (4), which runs beneath at least one of the coil chambers, and wherein the winding wire (10) runs through the slot-like channel (4).

Description

Beschreibung Titel  Description title
Zündspule mit reduzierter Bauteileanzahl Stand der Technik  Ignition coil with reduced number of components state of the art
Die vorliegende Erfindung betrifft eine Zündspule für eine Brennkraftmaschine mit einer reduzierten Bauteileanzahl. The present invention relates to an ignition coil for an internal combustion engine with a reduced number of components.
Zündspulen sind aus dem Stand der Technik in unterschiedlichen Ignition coils are of the prior art in different
Ausgestaltungen bekannt. Aus der DE 198 50 519 A1 ist beispielsweise eine Zündspule bekannt, welche ein Entstörelement zur Dämpfung der bei einem Zündvorgang an der Zündkerze auftretenden elektrischen Störenergie aufweist. Das Entstörelement ist dabei in axialer Richtung der Zündspule als Induktivität ausgebildet und wird zumindest teilweise aus dem Wicklungsdraht gebildet. Diese bekannte Zündspule ist jedoch nur für Stabzündspulen und nicht für Kompaktzündspulen geeignet. Ferner werden bei den bekannten Zündspulen heutzutage ein Wickelanfang, die sogenannte kalte Seite, und ein Wickelende, die sogenannte heiße Seite, jeweils an einem Anbindepfosten aus Metall angebunden und mittels einer Aderendhülse verschweißt. Zusätzlich wird für die Herstellung eines Hochspannungskontaktes zwischen dem Anbindepfosten am Wickelende und einem Entstörwiderstand ein zusätzliches Kontaktblech benötigt. Embodiments known. From DE 198 50 519 A1, for example, an ignition coil is known which has a suppression element for damping the electrical interference energy which occurs during ignition of the spark plug. The suppression element is designed as an inductance in the axial direction of the ignition coil and is at least partially formed from the winding wire. However, this known ignition coil is suitable only for pencil ignition coils and not for Kompaktzündspulen. Furthermore, in the known ignition coils nowadays a winding start, the so-called cold side, and a winding end, the so-called hot side, each connected to a Anbindepfosten of metal and welded by means of a ferrule. In addition, an additional contact plate is needed for the production of a high voltage contact between the Anbindepfosten at the coil end and a suppression resistor.
Offenbarung der Erfindung Disclosure of the invention
Die erfindungsgemäße Zündspule für eine Brennkraftmaschine mit den The ignition coil according to the invention for an internal combustion engine with the
Merkmalen des Anspruchs 1 weist demgegenüber den Vorteil auf, dass sie eine signifikant reduzierte Bauteileanzahl aufweist. Ferner können erfindungsgemäß thermomechanische Spannungen in der Zündspule reduziert werden. Dies wirkt sich positiv auf die Lebensdauer der Zündspule aus. Erfindungsgemäß wird dies dadurch erreicht, dass die Zündspule einen Spulenkörper und eine Wicklung aus einem Wicklungsdraht umfasst. Der Spulenkörper umfasst einen Kanal, welcher unterhalb der Wcklung verläuft und in welchem ein Teil des Wicklungsdrahts geführt ist. Hierdurch wird es erfindungsgemäß möglich, dass der Wcklungsdraht nicht mehr in aufeinanderfolgender weise gewickelt werden muss, sondern durch den Kanal im Spulenkörper zu einer beliebigen Position geführt werden kann. Einzelne Wicklungsabschnitte können somit in beliebiger Weise Features of claim 1, on the other hand, has the advantage that it has a significantly reduced number of components. Furthermore, according to the invention, thermo-mechanical stresses in the ignition coil can be reduced. This has a positive effect on the service life of the ignition coil. According to the invention this is achieved in that the ignition coil from a bobbin and a coil a winding wire comprises. The bobbin includes a channel which extends below the Wcklung and in which a part of the winding wire is guided. This makes it possible according to the invention that the Wcklungsdraht no longer needs to be wound in succession, but can be guided through the channel in the bobbin to any position. Individual winding sections can thus in any way
angeordnet werden. Hierdurch kann ein Spulenkörper, insbesondere aus thermischer Sicht, optimiert werden. Die Unteransprüche zeigen bevorzugte Weiterbildungen der Erfindung. to be ordered. As a result, a bobbin, in particular from a thermal point of view, can be optimized. The dependent claims show preferred developments of the invention.
Bevorzugt umfasst der Spulenkörper eine Vielzahl von Spulenkammern, wobei jeweils ein Wicklungsabschnitt der Wicklung in einer Spulenkammer angeordnet ist. Dabei verläuft der Kanal im Spulenkörper unterhalb von wenigstens einer der Spulenkammern. Somit kann der Wicklungsdraht durch den Kanal im Preferably, the bobbin comprises a plurality of coil chambers, wherein in each case one winding section of the winding is arranged in a coil chamber. The channel runs in the bobbin below at least one of the coil chambers. Thus, the winding wire through the channel in
Spulenkörper zu einer beliebigen Spulenkammer geführt werden, welche nicht mehr unmittelbar benachbart zu einer eben gewickelten Spulenkammer liegt.  Spool be performed to any bobbin, which is no longer immediately adjacent to a newly wound bobbin.
Vorzugsweise umfasst die Wcklung einen ersten und einen zweiten Preferably, the package comprises a first and a second
Wicklungsbereich, welche jeweils mehrere Wicklungsabschnitte umfassen. Der erste Wcklungsbereich reicht dabei von einer äußersten Spulenkammer an einem ersten Endbereich des Spulenkörpers zu einer ersten inneren Winding area, each comprising a plurality of winding sections. The first Waklungsbereich extends from an outermost coil chamber at a first end portion of the bobbin to a first inner
Spulenkammer. Der zweite Wcklungsbereich reicht von einer äußersten Spool chamber. The second area of descent extends from one extreme
Spulenkammer an einem zweiten Endbereich des Spulenkörpers zu einer zweiten inneren Spulenkammer. Dabei verläuft der Wcklungsdraht von der ersten inneren Spulenkammer des ersten Wcklungsbereichs durch den im Spulenkörper gebildeten Kanal zur äußersten Wcklungskammer des zweiten Wicklungsbereichs. Weiter bevorzugt umfasst der Spulenkörper eine ungerade Anzahl von Spool chamber at a second end portion of the bobbin to a second inner spool chamber. In this case, the spooling wire runs from the first inner spool chamber of the first spotting area through the channel formed in the spool body to the outermost spotting chamber of the second winding area. More preferably, the bobbin comprises an odd number of
Spulenkammern. Hierdurch ist es möglich, dass insbesondere ein Abstand zwischen dem ersten und zweiten Wcklungsbereich möglich ist. Besonders bevorzugt ist dabei eine mittlere Spulenkammer ohne Wicklung gebildet, so dass ein einfacher, symmetrischer Aufbau der Zündspule möglich ist. Weiter bevorzugt beginnt der Kanal im Spulenkörper an der mittleren Coil chambers. This makes it possible that in particular a distance between the first and second Wcklungsbereich is possible. In this case, a middle coil chamber without winding is particularly preferably formed, so that a simple, symmetrical design of the ignition coil is possible. More preferably, the channel begins in the bobbin at the middle
Spulenkammer. Spool chamber.
Ein besonders kompakter Aufbau wird erreicht, wenn der erste und zweite Wicklungsbereich jeweils drei Wicklungsabschnitte aufweisen. Gemäß einer weiteren bevorzugten Ausgestaltung der vorliegenden Erfindung umfasst die Zündspule ferner einen integralen Hochspannungsabgang, welcher zapfenartig von einem äußeren Umfang des Spulenkörpers vorsteht. Durch die Integration des Hochspannungsabgangs direkt an den Spulenkörper kann eine direkte Kontaktierung einer Zündkerze am Hochspannungsabgang erfolgen, so dass an der heißen Seite des Wcklungsdrahts auf einen Anbindepfosten, eine A particularly compact construction is achieved if the first and second winding regions each have three winding sections. According to a further preferred embodiment of the present invention, the ignition coil further comprises an integral high-voltage outlet which projects in a pin-like manner from an outer circumference of the bobbin. The integration of the high voltage output directly to the bobbin direct contact of a spark plug can be done on the high voltage outlet, so that on the hot side of the Wcklungsdrahts on a Anbindepfosten, a
Aderendhülse sowie ein zusätzliches separates Hochspannungskontaktteil verzichtet werden kann. Vorzugsweise ist der Hochspannungsabgang als Entstörelement ausgebildet, in dem der Wcklungsdraht von der letzten Spulenkammer zum Wire end ferrule and an additional separate high voltage contact part can be omitted. Preferably, the high voltage output is designed as a suppression element, in which the Wcklungsdraht from the last coil chamber for
Hochspannungsabgang geführt ist und mehrmals um den High voltage output is performed and several times around the
Hochspannungsabgang herumgewickelt ist. Hierdurch kann integral an den Spulenkörper ein Hochspannungsabgang mit integriertem Entstörelement gebildet werden. High voltage output is wound around. As a result, a high-voltage outlet with integrated suppressor element can be integrally formed on the bobbin.
Weiter bevorzugt ist der Hochspannungsabgang an einem in Längsrichtung des Spulenkörpers liegenden mittleren Bereich angeordnet. Hierdurch kann der erfindungsgemäße Spulenkörper insbesondere bei Kompaktzündspulen eingesetzt werden. More preferably, the high-voltage outlet is arranged on a lying in the longitudinal direction of the bobbin central region. As a result, the bobbin according to the invention can be used in particular in Kompaktzündspulen.
Vorzugsweise verläuft der Kanal im Spulenkörper nicht parallel zu einer Längsachse des Spulenkörpers. D.h., in einer Projektion in eine die Längsachse des Spulenkörpers umfassenden Ebene schneidet der Kanal die Längsachse. Hierdurch kann eine einfachere Führung des Wcklungsdrahts sichergestellt werden. Preferably, the channel in the bobbin is not parallel to a longitudinal axis of the bobbin. That is to say, in a projection into a plane comprising the longitudinal axis of the bobbin, the channel intersects the longitudinal axis. As a result, a simpler guidance of the Waklungsdrahts be ensured.
Zeichnung drawing
Nachfolgend wird ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die begleitende Zeichnung im Detail beschrieben. In der Zeichnung ist: Figur 1 eine schematische Seitenansicht einer Zündspule gemäß einem Ausführungsbeispiel der Erfindung, und Figur 2 eine schematische Schnittansicht der Zündspule von Figur 1. Hereinafter, an embodiment of the invention will be described in detail with reference to the accompanying drawings. In the drawing is: 1 shows a schematic side view of an ignition coil according to an embodiment of the invention, and Figure 2 is a schematic sectional view of the ignition coil of Figure 1.
Bevorzugte Ausführungsform der Erfindung Preferred embodiment of the invention
Nachfolgend wird unter Bezugnahme auf die Figuren 1 und 2 eine Zündspule 1 gemäß einem bevorzugten Ausführungsbeispiel der Erfindung im Detail beschrieben. Hereinafter, an ignition coil 1 according to a preferred embodiment of the invention will be described in detail with reference to Figures 1 and 2.
Wie aus den Figuren 1 und 2 ersichtlich ist, umfasst die Zündspule 1 einen Spulenkörper 2 mit einem zylindrischen Basisbereich, an dessen Außenseite zumindest drei, beispielsweise eine Vielzahl von Spulenkammern 21 , 22, 23, 24,As can be seen from FIGS. 1 and 2, the ignition coil 1 comprises a coil body 2 with a cylindrical base region, on the outside of which at least three, for example a plurality of coil chambers 21, 22, 23, 24,
25, 26, 27 gebildet sind. Die Anzahl der Spulenkammern ist ungerade. 25, 26, 27 are formed. The number of bobbins is odd.
Die Zündspule weist eine Wcklung 9 auf, die einen ersten Wcklungsbereich 17 und einen zweiten Wicklungsbereich 18 umfasst, wobei die beiden The ignition coil has a Wcklung 9, which comprises a first Wcklungsbereich 17 and a second winding region 18, wherein the two
Wicklungsbereiche 17, 18 beispielsweise jeweils in separaten SpulenkammernWinding areas 17, 18, for example, each in separate coil chambers
21 ,22,23,24,25,26 vorgesehen sind. 21, 22, 23, 24, 25, 26 are provided.
Der Wicklungsdraht der Wcklung 9 verläuft im ersten Wicklungsbereich 17 von einem dem zweiten Wcklungsbereich 17 abgewandten zu einem dem zweiten Wicklungsbereich 17 zugewandten Ende. Der Wcklungsdraht verläuft weiterhin im zweiten Wicklungsbereich 18 von einem dem ersten Wicklungsbereich 17 abgewandten zu einem dem ersten Wcklungsbereich 17 zugewandten Ende. Zwischen dem ersten Wcklungsbereich 17 und dem zweiten Wicklungsbereich 18 ist beispielsweise eine mittlere Spulenkammer 27 vorgesehen, die einen Hochspannungsabgang 5 und keinen Wcklungsabschnitt aufweist. Beim  In the first winding region 17, the winding wire of the winding 9 extends from an end facing away from the second heat-sealing region 17 to an end facing the second winding region 17. The Wcklungsdraht continues to run in the second winding region 18 of the first winding region 17 facing away from the first Wcklungsbereich 17 end facing. For example, a middle coil chamber 27, which has a high-voltage outlet 5 and no cooling section, is provided between the first heat-dissipating area 17 and the second winding area 18. At the
Übergang von dem dem zweiten Wicklungsbereich 18 zugewandten Ende des ersten Wicklungsbereichs 17 zu dem dem ersten Wicklungsbereich 17 abgewandten Ende des zweiten Wcklungsbereichs 18 verläuft der Transition from the end of the first winding region 17 facing the second winding region 18 to the end of the second winding region 18 remote from the first winding region 17 extends
Wicklungsdraht zumindest abschnittsweise durch einen Kanal 4. Der Kanal 4 ist beispielsweise als nutförmige Vertiefung in dem Spulenkörper 2 ausgebildet. Die Spulenkammern 21 ,22,23,24,25,26 sind in axialer Richtung von Winding wire at least in sections through a channel 4. The channel 4 is formed for example as a groove-shaped recess in the bobbin 2. The coil chambers 21, 22,23,24,25,26 are in the axial direction of
Trennwandungen begrenzt. Damit der Wcklungsdraht in den Kanal 4 eingelegt werden kann, verläuft der Kanal 4 schlitzförmig durch die Trennwandungen hindurch. Partition walls limited. Thus the Wcklungsdraht inserted into the channel 4 can be, runs the channel 4 slit through the dividing walls therethrough.
Der erste Wicklungsbereich 17 hat zumindest einen Wicklungsabschnitt 1 1 , 12,13 und der zweite Wcklungsbereich 17 zumindest einen Wicklungsabschnitt 14, 15, 16, wobei jeder Wicklungsabschnitt 1 1 , 12, 13, 14, 15, 16 der Wcklung 9 beispielsweise in einer separaten Spulenkammer 21 , 22, 23, 24, 25, 26 angeordnet ist. The first winding region 17 has at least one winding section 1 1, 12, 13 and the second winding section 17 at least one winding section 14, 15, 16, wherein each winding section 1 1, 12, 13, 14, 15, 16 of the winding 9, for example, in a separate Spool chamber 21, 22, 23, 24, 25, 26 is arranged.
Die Wcklung 9 kann an einem Kontaktelement 3 beginnen. Die Wcklung 9 ist dabei mehrfach um das stiftartige Kontaktelement 3 herumgewickelt. The Wcklung 9 can begin at a contact element 3. The Wcklung 9 is several times wrapped around the pin-like contact element 3.
Die Wicklung 9 ist aus einem relativ dünnen Wcklungsdraht, vorzugsweise aus Kupfer, hergestellt. Die Wcklung 9 umfasst beispielsweise eine Vielzahl von Wicklungsabschnitten 11 , 12, 13, 14, 15, 16. Ferner umfasst die Zündspule 1 den Hochspannungsabgang 5. Durch die ungerade Anzahl von Spulenkammern kann der Hochspannungsabgang 5 an der mittleren Spulenkammer 27 angeordnet werden, so dass ein symmetrischer Aufbau erreicht wird. An der mittleren Spulenkammer 27 ist kein Wicklungsabschnitt gebildet. The winding 9 is made of a relatively thin spiked wire, preferably copper. The Wcklung 9 includes, for example, a plurality of winding sections 11, 12, 13, 14, 15, 16. Further, the ignition coil 1 comprises the high-voltage outlet 5. Due to the odd number of coil chambers, the high-voltage outlet 5 can be arranged on the middle coil chamber 27, so that a symmetrical structure is achieved. At the middle bobbin 27, no winding section is formed.
Der Spulenkörper 1 umfasst einen ersten Endbereich 28 und einen zweiten Endbereich 29. Im Spulenkörper 2 ist ferner noch der Kanal 4 vorgesehen, welcher an der mittleren Spulenkammer 27 beginnt und unter den drei The bobbin 1 comprises a first end portion 28 and a second end portion 29. In the bobbin 2 is still still the channel 4 is provided, which starts at the middle bobbin 27 and under the three
Spulenkammern 24, 25, 26 hindurchgeführt ist und am zweiten Endbereich 29 des Spulenkörpers 2 endet. Der Hochspannungsabgang 5 ist in Längsrichtung X- X des Spulenkörpers 2 im mittleren Bereich angeordnet. Ferner ist der Kanal 4 derart gebildet, dass in einer Projektion auf eine Ebene, welche die Längsachse X-X des Spulenkörpers 2 umfasst, der Kanal 4 die Längsachse X-X schneidet. Spool chambers 24, 25, 26 is guided and ends at the second end portion 29 of the bobbin 2. The high-voltage outlet 5 is arranged in the longitudinal direction X-X of the bobbin 2 in the central region. Further, the channel 4 is formed such that in a projection on a plane which comprises the longitudinal axis X-X of the bobbin 2, the channel 4 intersects the longitudinal axis X-X.
Wie unmittelbar aus den Figuren 1 und 2 ersichtlich ist, sind jeweils drei As can be seen immediately from Figures 1 and 2, three are each
Wicklungsabschnitte zu einem Wicklungsbereich 17, 18 zusammengefasst. Winding sections combined to form a winding region 17, 18.
Hierbei umfasst der erste Wicklungsbereich 17 die drei Wcklungsabschnitte 11 , 12, 13 und der zweite Wicklungsbereich 18 umfasst die drei Wcklungsabschnitte 14, 15, 16. Die Wcklung 9 ist dabei derart ausgeführt, dass, ausgehend vom Kontaktelement 3, der Wicklungsdraht 10 zuerst den Wicklungsabschnitt 1 1 , dann den Wicklungsabschnitt 12 und dann den Wcklungsabschnitt 13 bildet und vom Wicklungsabschnitt 13 in den Kanal 4 geführt ist. Im Kanal 4 wird der Wicklungsdraht 10 unter den Spulenkammern 24, 25, 26 zum zweiten Here, the first winding region 17 comprises the three Wcklungsabschnitte 11, 12, 13 and the second winding region 18 includes the three Wcklungsabschnitte 14, 15, 16. The Wcklung 9 is designed such that, starting from the contact element 3, the winding wire 10 first, the winding section 1 1, then the winding section 12 and then the Wcklungsabschnitt 13 forms and from the winding section 13 is guided in the channel 4. In the channel 4, the winding wire 10 under the coil chambers 24, 25, 26 to the second
Endbereich 29 geführt und dann wird zuerst der Wcklungsabschnitt 14, dann der Wicklungsabschnitt 15 und dann der Wicklungsabschnitt 16 gewickelt. Vom Wicklungsabschnitt 16 wird der Wcklungsdraht 10 in der mittleren Led end portion 29 and then the Wcklungsabschnitt 14, then the winding portion 15 and then the winding portion 16 is wound first. From the winding section 16 of the Waklungsdraht 10 is in the middle
Spulenkammer 27 zum Hochspannungsabgang 5 geführt. Spool chamber 27 led to the high voltage outlet 5.
Am Hochspannungsabgang 5 wird der Wcklungsdraht 10 mehrfach um einen Kern 6 herumgewickelt, um ein Entstörelement zu bilden. Somit ist das At high voltage output 5, the spooling wire 10 is wound around a core 6 several times to form a suppression element. So that's it
Entstörelement integral mit dem Hochspannungsabgang 5 gebildet, so dass keine zusätzlichen Entstörwiderstände notwendig sind. Es sei angemerkt, dass der Kern 6 eine beliebige Form, entsprechend einer gewünschten Anwendung (lang, kurz, breit, schmal) haben kann, und dass der Wicklungsdraht in einer beliebigen Anzahl von Wicklungen, welche zur Entstörung der Zündspule benötigt werden, um den Kern herumgewickelt werden kann. Suppressor element formed integrally with the high-voltage outlet 5, so that no additional suppression resistors are necessary. It should be noted that the core 6 may have any shape, according to a desired application (long, short, wide, narrow), and that the winding wire in any number of windings, which are required for the suppression of the ignition coil, around the core can be wrapped around.
Somit kann erfindungsgemäß die Bauteileanzahl insbesondere am heißen Ende im Bereich des Hochspannungsabgangs 5 im Vergleich mit dem Stand der Technik deutlich reduziert werden. Ferner weist die erfindungsgemäße Thus, according to the invention, the number of components, in particular at the hot end in the region of the high-voltage outlet 5, can be significantly reduced in comparison with the prior art. Furthermore, the inventive
Zündspule einen verbesserten thermischen Aufbau auf, da der letzte Ignition coil on an improved thermal design, as the last
Wicklungsabschnitt 16 nahe der Mitte des Spulenkörpers 2 angeordnet ist. Winding portion 16 is disposed near the center of the bobbin 2.
Hierdurch kann insbesondere ein Temperaturgefälle zwischen dem ersten Endbereich 28 und dem zweiten Endbereich 29 des Spulenkörpers reduziert werden. Die im Ausführungsbeispiel beschriebene Wcklung 9 ist insbesondere als Sekundärwicklung der Zündspule ausgebildet. Der erfindungsgemäße Spulenkörper eignet sich weiterhin besonders zur Verwendung in In this way, in particular, a temperature gradient between the first end region 28 and the second end region 29 of the bobbin can be reduced. The Wcklung 9 described in the embodiment is designed in particular as a secondary winding of the ignition coil. The bobbin according to the invention is also particularly suitable for use in
Kompaktzündspulen. Kompaktzündspulen.
Es sei angemerkt, dass die Wicklungsabschnitte 17, 18 auch ohne It should be noted that the winding sections 17, 18 also without
Spulenkammern einfach auf den Spulenkörper mit einem gewissen Abstand gewickelt werden können. Spool chambers can be easily wound on the bobbin with a certain distance.

Claims

Zündspule für eine Brennkraftmaschine, umfassend:  Ignition coil for an internal combustion engine, comprising:
einen Spulenkörper (2) und  a bobbin (2) and
eine Wicklung (9) aus einem Wcklungsdraht (10), welche auf dem Spulenkörper (2) angeordnet ist,  a winding (9) of a winding wire (10), which is arranged on the bobbin (2),
wobei der Spulenkörper (2) einen Kanal (4) umfasst, welcher unterhalb der Wcklung (9) verläuft, und  wherein the bobbin (2) comprises a channel (4) which extends below the Wcklung (9), and
wobei der Wcklungsdraht (10) durch den Kanal (4) verläuft.  wherein the Waklungsdraht (10) through the channel (4).
Zündspule nach Anspruch 1 , dadurch gekennzeichnet, dass Ignition coil according to claim 1, characterized in that
die Wcklung (9) einen ersten Wicklungsbereich (17) und einen zweiten Wicklungsbereich (18) umfasst, die jeweils in separaten Spulenkammern (21 ,22,23,24,25,26) vorgesehen sind,  the package (9) comprises a first winding region (17) and a second winding region (18), which are each provided in separate package chambers (21, 22, 23, 24, 25, 26),
wobei der Wicklungsdraht im ersten Wicklungsbereich (17) von einem dem zweiten Wicklungsbereich (18) abgewandten zu einem dem zweiten Wicklungsbereich (18) zugewandten Ende verläuft und wobei der Wcklungsdraht im zweiten Wicklungsbereich (18) von einem dem ersten Wicklungsbereich (17) abgewandten zu einem dem ersten Wicklungsbereich (17) zugewandten Ende verläuft, und  wherein the winding wire in the first winding region (17) extends from an end facing away from the second winding region (18) to an end facing the second winding region (18), and wherein the corona wire in the second winding region (18) faces away from the first winding region (17) the first winding region (17) facing the end, and
wobei der Wicklungsdraht (10) beim Übergang von dem dem zweiten Wicklungsbereich zugewandten Ende des ersten Wcklungsbereichs (17) zu dem dem ersten Wicklungsbereich abgewandten Ende des zweiten Wicklungsbereichs (18) zumindest abschnittsweise durch den Kanal (4) verläuft.  wherein the winding wire (10) during the transition from the second winding region facing the end of the first Waklungsbereichs (17) to the end facing away from the first winding region of the second winding region (18) at least partially through the channel (4).
Zündspule nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der erste Wcklungsbereich (17) zumindest einen Wicklungsabschnitt (1 1 , 12, 13) und der zweite Wicklungsbereich (17) zumindest einen Wicklungsabschnitt (14, 15, 16) umfasst und wobei jeder Wicklungsabschnitt (1 1 , 12, 13, 14, 15, 16) der Wicklung (9) in einer separaten Spulenkammer (21 , 22, 23, 24, 25, 26) angeordnet ist. Ignition coil according to one of the preceding claims, characterized in that the first Waklungsbereich (17) at least one winding section (1 1, 12, 13) and the second winding region (17) at least one winding section (14, 15, 16) and wherein each Winding portion (1 1, 12, 13, 14, 15, 16) of the winding (9) in a separate coil chamber (21, 22, 23, 24, 25, 26) is arranged.
Zündspule nach Anspruch 3, dadurch gekennzeichnet, dass zwischen dem ersten Wicklungsbereich (17) und dem zweiten Wicklungsbereich (18) eine mittlere Spulenkammer (27) vorgesehen ist, die einen Ignition coil according to claim 3, characterized in that between the first winding region (17) and the second winding region (18), a middle coil chamber (27) is provided which a
Hochspannungsabgang (5) und keinen Wicklungsabschnitt aufweist. High voltage outlet (5) and has no winding section.
Zündspule nach Anspruch 1 , dadurch gekennzeichnet, dass der Ignition coil according to claim 1, characterized in that the
Spulenkörper (2) eine Vielzahl von Spulenkammern (21 , 22, 23, 24, 25, 26) umfasst und wobei jeweils ein Wcklungsabschnitt (11 , 12, 13, 14, 15, 16) der Wcklung (9) in einer Spulenkammer (21 , 22, 23, 24, 25, 26) angeordnet ist. Coil body (2) comprises a plurality of coil chambers (21, 22, 23, 24, 25, 26) and wherein in each case a Wcklungsabschnitt (11, 12, 13, 14, 15, 16) of Wcklung (9) in a bobbin (21 , 22, 23, 24, 25, 26) is arranged.
Zündspule nach Anspruch 5, dadurch gekennzeichnet, dass Ignition coil according to claim 5, characterized in that
die Wcklung (9) des ersten Wcklungsbereichs (17) mehrere  the Wcklung (9) of the first Waklungsbereichs (17) a plurality
Wicklungsabschnitte (1 1 , 12, 13) und einen zweiten  Winding sections (1 1, 12, 13) and a second
Wicklungsbereich (18) mit mehreren Wicklungsabschnitten (14, 15, 16) umfasst,  Winding region (18) having a plurality of winding sections (14, 15, 16),
wobei beim ersten Wicklungsbereich (17) der Wcklungsdraht von einer äußersten Spulenkammer (21) an einem ersten Endbereich (28) des Spulenkörpers zu einer ersten inneren Spulenkammer (23) verläuft und beim zweiten Wcklungsbereich (18) von einer äußersten Spulenkammer (24) an einem zweiten Endbereich (29) des  wherein at the first winding portion (17), the sprocket wire extends from an outermost bobbin case (21) at a first end portion (28) of the bobbin to a first inner bobbin case (23) and at the second bobbin portion (18) from an outermost bobbin case (24) at one second end portion (29) of
Spulenkörpers zu einer zweiten inneren Spulenkammer (26) verläuft, und wobei der Wicklungsdraht (10) von der ersten inneren  Bobbin body to a second inner coil chamber (26) extends, and wherein the winding wire (10) from the first inner
Spulenkammer (23) des ersten Wcklungsbereichs (17) zur äußersten Spulenkammer (24) des zweiten Wcklungsbereichs (18) durch den Kanal (4) verläuft.  Spool chamber (23) of the first Waklungsbereich (17) to the outermost bobbin chamber (24) of the second Waklungsbereichs (18) through the channel (4).
Zündspule nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine ungerade Anzahl von Spulenkammern (21 , 22, 23, 24, 25, 26, 27). Ignition coil according to one of the preceding claims, characterized by an odd number of coil chambers (21, 22, 23, 24, 25, 26, 27).
Zündspule nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Kanal (4) an der mittleren Spulenkammer (27) beginnt. Ignition coil according to claim 6 or 7, characterized in that the channel (4) starts at the middle coil chamber (27).
9. Zündspule nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kanal als nutförmige Vertiefung ausgebildet ist. 9. Ignition coil according to one of the preceding claims, characterized in that the channel is formed as a groove-shaped recess.
10. Zündspule nach einem der Ansprüche 3 bis 9, dadurch gekennzeichnet, dass der erste und zweite Wicklungsbereich (17, 18) jeweils drei 10. Ignition coil according to one of claims 3 to 9, characterized in that the first and second winding region (17, 18) in each case three
Wicklungsabschnitte umfasst.  Winding sections comprises.
1 1. Zündspule nach einem der vorhergehenden Ansprüche, dadurch 1 1. Ignition coil according to one of the preceding claims, characterized
gekennzeichnet, dass der Hochspannungsabgang (5) zapfenartig von einem äußeren Umfang des Spulenkörpers (2) vorsteht.  characterized in that the high-voltage outlet (5) projects like a pin from an outer circumference of the bobbin (2).
12. Zündspule nach einem der vorhergehenden Ansprüche, dadurch 12. Ignition coil according to one of the preceding claims, characterized
gekennzeichnet, dass am Hochspannungsabgang (5) ein Entstörelement ausgebildet ist, indem der Wicklungsdraht (10) um einen Kern (6) am Hochspannungsabgang (5) mehrmals herumgewickelt ist.  in that a suppression element is formed on the high-voltage outlet (5), in that the winding wire (10) is wound around a core (6) on the high-voltage outlet (5) several times.
13. Zündspule nach einem der vorhergehenden Ansprüche, dadurch 13. Ignition coil according to one of the preceding claims, characterized
gekennzeichnet, dass der Hochspannungsabgang (5) an einer Mitte in Längsrichtung (X-X) des Spulenkörpers (2) angeordnet ist.  characterized in that the high voltage output (5) is disposed at a center in the longitudinal direction (X-X) of the bobbin (2).
14. Zündspule nach einem der vorhergehenden Ansprüche, dadurch 14. Ignition coil according to one of the preceding claims, characterized
gekennzeichnet, dass der Kanal (4) derart angeordnet ist, dass in einer Projektion auf einer Ebene, welche die Längsachse (X-X) des  characterized in that the channel (4) is arranged such that in a projection on a plane which the longitudinal axis (X-X) of the
Spulenkörpers (2) umfasst, der Kanal (4) die Längsachse (X-X) des Spulenkörpers (2) schneidet.  Spool (2), the channel (4) intersects the longitudinal axis (X-X) of the bobbin (2).
EP11760508.9A 2010-10-05 2011-09-26 Ignition coil with reduced number of components Not-in-force EP2625421B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010041992 2010-10-05
DE201110082236 DE102011082236A1 (en) 2010-10-05 2011-09-07 Ignition coil with reduced number of components
PCT/EP2011/066688 WO2012045605A1 (en) 2010-10-05 2011-09-26 Ignition coil with a reduced number of components

Publications (2)

Publication Number Publication Date
EP2625421A1 true EP2625421A1 (en) 2013-08-14
EP2625421B1 EP2625421B1 (en) 2014-08-06

Family

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Application Number Title Priority Date Filing Date
EP11760508.9A Not-in-force EP2625421B1 (en) 2010-10-05 2011-09-26 Ignition coil with reduced number of components

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EP (1) EP2625421B1 (en)
CN (1) CN103140668B (en)
BR (1) BR112013007966A8 (en)
DE (1) DE102011082236A1 (en)
WO (1) WO2012045605A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102014212002B3 (en) * 2014-06-23 2015-12-10 Walter Seidl Wechselspannungszündsystem
EP3131101A1 (en) * 2015-08-12 2017-02-15 Mahle International GmbH Coil former for an electrical coil, electrical coil comprising such a coil former
CN106324085A (en) * 2016-08-30 2017-01-11 中国海洋石油总公司 Pulse eddy current testing probe

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JPS58158407U (en) * 1982-04-15 1983-10-22 阪神エレクトリツク株式会社 Ignition coil split winding bobbin
JPS5937711U (en) * 1982-09-03 1984-03-09 株式会社デンソー High pressure bobbin for ignition coil
US5315280A (en) * 1991-06-21 1994-05-24 Motorola Lighting, Inc. Bobbin for electrical windings
DE19850519A1 (en) 1998-11-03 2000-05-04 Bosch Gmbh Robert Ignition arrangement for internal combustion engine has noise suppression element as inductance that damps noise energy by AC impedance and is at least partly formed by winding wire
TW498361B (en) * 2001-04-04 2002-08-11 Delta Electronics Inc Winding structure and method of transformer
JP2008041799A (en) * 2006-08-03 2008-02-21 Hanshin Electric Co Ltd Ignition coil for internal combustion engine
DE102006048901A1 (en) * 2006-10-17 2008-07-17 Robert Bosch Gmbh Ignition coil, in particular for an internal combustion engine of a motor vehicle
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BR112013007966A2 (en) 2016-06-21
CN103140668B (en) 2016-06-08
BR112013007966A8 (en) 2016-10-25
CN103140668A (en) 2013-06-05
WO2012045605A1 (en) 2012-04-12
DE102011082236A1 (en) 2012-04-05
EP2625421B1 (en) 2014-08-06

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