EP1598910B1 - Dispositif de connexion entre une bougie d'allumage et une bobine d'allumage - Google Patents

Dispositif de connexion entre une bougie d'allumage et une bobine d'allumage Download PDF

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Publication number
EP1598910B1
EP1598910B1 EP05101360A EP05101360A EP1598910B1 EP 1598910 B1 EP1598910 B1 EP 1598910B1 EP 05101360 A EP05101360 A EP 05101360A EP 05101360 A EP05101360 A EP 05101360A EP 1598910 B1 EP1598910 B1 EP 1598910B1
Authority
EP
European Patent Office
Prior art keywords
spark plug
ignition coil
connection device
elastic material
connecting bolt
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 - Fee Related
Application number
EP05101360A
Other languages
German (de)
English (en)
Other versions
EP1598910A1 (fr
Inventor
Reinhard Seidl
Werner Steinberger
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 EP1598910A1 publication Critical patent/EP1598910A1/fr
Application granted granted Critical
Publication of EP1598910B1 publication Critical patent/EP1598910B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • H01T13/44—Sparking plugs structurally combined with other devices with transformers, e.g. for high-frequency ignition

Definitions

  • the invention is based on a connecting element for connecting a spark plug and an ignition coil to an ignition coil housing, wherein the connecting element has a receiving space for the connecting bolt of the spark plug and arranged on the receiving space contact element for making electrical contact with the connecting bolt of the spark plug with the ignition coil.
  • Rod-type ignition coils usually use a shaft in the cylinder head above a spark plug as installation space.
  • the known ignition coils on a screw or locking device.
  • the motor in turn is equipped with a corresponding screw or latching device.
  • These connecting elements for connecting the spark plug with the ignition coil require a mechanically complex processing and a variety of mechanical components.
  • US 6,668,810 B1 discloses a Garseinichtung with a receiving space for the insulator region and the terminal bolt of the spark plug. Between the connecting bolt of the spark plug and the receiving space remains an air gap after assembly.
  • EP 0 406 509 A1 and the JP 60198713 A In each case a receiving space for the connecting bolt is shown, which does not have the contour of the spark plug after mounting on the spark plug.
  • the connecting element according to the invention is intended to reduce the number of mechanical components to be used and, with regard to the relative orientation and the distance to be maintained between the ignition coil contact and the connecting bolt, a spark plug permit a relatively large tolerance. This object is achieved by a connecting element according to claim 1.
  • the subclaims relate to advantageous developments of the subject invention.
  • a connecting element for connecting a spark plug and an ignition coil with a coil housing according to the aforementioned type, in which at least a portion of the ignition coil housing and at least the adjacent portion of the spark plug are enclosed by an insulating, elastic material, has the advantage that a conventional screw or locking device can be omitted and a very cost-effective solution is provided.
  • the service life of the ignition coil is extended by providing decoupling or vibration damping between the engine and the ignition coil.
  • the housing of the ignition coil can be substantially completely surrounded by the insulating, elastic material. As a result, a particularly good insulation is achieved.
  • a receiving space for the insulator region of the spark plug may be preformed in the insulating elastic material.
  • the receiving space for the connecting bolt of the spark plug is preformed with respect to this preferably tapered. This preforming facilitates the insertion of the spark plug or plugging the ignition coil, whereby the assembly is significantly simplified overall.
  • the insulator region of the spark plug adjoining the connecting bolt can, in an advantageous embodiment of the invention, be enclosed by the insulating, elastic material.
  • the contact element for making electrical contact with the connecting bolt of the spark plug with the ignition coil has an elastic contacting part.
  • the elastic contacting part may have a spring contact, for example a compression spring.
  • the elastic contacting part may be formed of an electrically conductive, elastic material and the receiving space for the connecting bolt of the spark plug may be preformed in the electrically conductive, elastic material. If the elastic contacting part is enclosed by the insulating, elastic material, additional mechanical or metallic contact elements are saved, and the production is further simplified.
  • the insulating, elastic material may be a non-conductive silicone.
  • the electrically conductive, elastic material may be an electrically conductive silicone.
  • FIG. 1 shows in side view and in partial section a portion of a first embodiment of an inventive, provided with a spring contact 28 connecting element 1, wherein an ignition coil 12 is shown plugged into a spark plug 10 state.
  • the ignition coil 12 has an ignition coil housing 14, which is substantially completely enclosed by an insulating, elastic silicone material 22. An adjacent portion of the spark plug 10 is also enclosed by the insulating, elastic silicone material 22. The ignition coil 12 is held by the silicone material 22 on the spark plug 10.
  • the connecting element 1 has a receiving space 16 preformed in the silicone material 22 for a connecting bolt 18 of the spark plug 10.
  • the terminal bolt 18 of the spark plug 10 is surrounded by and held by the insulating elastic silicone material 22.
  • a compression spring contact 28 is provided as a contact element 20 for making electrical contact with the connecting bolt 18 of the spark plug 10 with the ignition coil 12.
  • a portion of the ignition coil itself may be formed of the insulating, elastic silicone material.
  • FIG. 2 shows in side view and in partial section a portion of the in FIG. 1 shown connecting element, wherein the state is shown in which the ignition coil 12 is not yet plugged onto the spark plug 10.
  • the receiving space 16 for the connecting bolt 18 of the spark plug 10 is already preformed in the insulating, elastic silicone material 22.
  • a receiving space 24 for an insulator region 26 of the spark plug 10 is preformed in the insulating elastic silicone material 22.
  • the receiving space 16 for the connecting bolt 18 of the spark plug 10 is preformed with respect to this tapered.
  • the silicone in the region of the connecting bolt 18 and in the insulator region 26 is elastically formed on the spark plug contour. This ensures a mechanically stable, axial and radial anchoring of the ignition coil 10 in a plug shaft of the associated internal combustion engine.
  • FIG. 3 shows in side view and in partial section a portion of the in the FIGS. 1 and 2 shown connecting element 1, wherein the ignition coil 12 is shown in the plugged onto the spark plug 10, an angular position to this engaging state. Due to a predetermined installation situation in the engine, such an angular position can be realized due to the sufficient elasticity of the silicone material 22. However, the ignition coil 12 is still firmly held on the spark plug 10 and always contacted safely due to the compression spring contact 28.
  • FIG. 4 shows in side view and in partial section a portion of a further embodiment of a connecting element 1 'according to the invention.
  • the elastic contacting element 20 is formed by a region of electrically conductive silicone 30.
  • the receiving space 16 for the connecting bolt 18 of the spark plug 10 in the electrically conductive, elastic material 30 is preformed.
  • the contacting region made of electrically conductive silicone 30 is enclosed by the insulating elastic material 22.

Landscapes

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

Claims (11)

  1. Elément de connexion pour la connexion d'une bougie d'allumage (10) et d'une bobine d'allumage (12) avec un boîtier de bobine d'allumage (14), l'élément de connexion présentant un espace de réception (16) pour le boulon de raccordement (18) de la bougie d'allumage (10) et un élément de contact (20) disposé au niveau de l'espace de réception (16) pour le contact électrique du boulon de raccordement (18) de la bougie d'allumage (10) avec la bobine d'allumage (12), au moins une région partielle du boîtier de bobine d'allumage (14) et au moins la région partielle adjacente de la bougie d'allumage (10) étant entourées par un matériau élastique isolant (22), caractérisé en ce que l'espace de réception (16) pour le boulon de raccordement (18) de la bougie d'allumage (10) est préformé par rapport à celui-ci de manière rétrécie de telle sorte que le matériau élastique isolant (22), ou une silicone électriquement conductrice (30) entourée par le matériau élastique isolant (22), soit façonné dans la région du boulon de raccordement (18) de manière élastique sur le contour de la bougie d'allumage.
  2. Elément de connexion selon la revendication 1, caractérisé en ce que le boîtier (14) de la bobine d'allumage (12) est essentiellement complètement entouré par le matériau élastique isolant (22).
  3. Elément de connexion selon l'une quelconque des revendications 1 et 2, caractérisé en ce qu'au moins une région partielle du boîtier de bobine d'allumage est formée par un matériau élastique isolant et au moins la région partielle adjacente de la bougie d'allumage est entourée par le matériau élastique isolant.
  4. Elément de connexion selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'un espace de réception (24) pour la région isolante (26) de la bougie d'allumage (10) est préformé dans le matériau élastique isolant (22), l'espace de réception (16) pour le boulon de raccordement (18) de la bougie d'allumage (10) étant préformé par rapport à celui-ci de préférence de manière rétrécie.
  5. Elément de connexion selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'au moins la région isolante (26) de la bougie d'allumage (10) se raccordant au boulon de raccordement (18) est entourée par le matériau élastique isolant (22).
  6. Elément de connexion selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément de contact (20) présente, pour le contact électrique du boulon de raccordement (18) de la bougie d'allumage (10) avec la bobine d'allumage (12), une pièce de contact élastique.
  7. Elément de connexion selon la revendication 6, caractérisé en ce que la pièce de contact élastique présente un contact à ressort (28).
  8. Elément de connexion selon la revendication 6, caractérisé en ce que la pièce de contact élastique est réalisée en un matériau élastique électriquement conducteur (30) et l'espace de réception (16) pour le boulon de raccordement (18) de la bougie d'allumage (10) est préformé dans le matériau élastique électriquement conducteur (30).
  9. Elément de connexion selon la revendication 8, caractérisé en ce que la pièce de contact élastique est entourée par le matériau élastique isolant (22).
  10. Elément de connexion selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le matériau élastique isolant (22) est une silicone non conductrice.
  11. Elément de connexion selon l'une quelconque des revendications 8 à 10, caractérisé en ce que le matériau élastique électriquement conducteur (30) est une silicone électriquement conductrice.
EP05101360A 2004-05-18 2005-02-23 Dispositif de connexion entre une bougie d'allumage et une bobine d'allumage Expired - Fee Related EP1598910B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410024540 DE102004024540A1 (de) 2004-05-18 2004-05-18 Verbindungselement zur Verbindung einer Zündkerze und einer Zündspule
DE102004024540 2004-05-18

Publications (2)

Publication Number Publication Date
EP1598910A1 EP1598910A1 (fr) 2005-11-23
EP1598910B1 true EP1598910B1 (fr) 2011-01-05

Family

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Application Number Title Priority Date Filing Date
EP05101360A Expired - Fee Related EP1598910B1 (fr) 2004-05-18 2005-02-23 Dispositif de connexion entre une bougie d'allumage et une bobine d'allumage

Country Status (4)

Country Link
EP (1) EP1598910B1 (fr)
JP (1) JP2005330965A (fr)
DE (2) DE102004024540A1 (fr)
ES (1) ES2357582T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104205534B (zh) * 2012-03-12 2016-08-31 日本特殊陶业株式会社 火花塞连接器具

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60198713A (ja) * 1984-03-22 1985-10-08 Sawafuji Electric Co Ltd 内燃機関用点火コイルの製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1233310B (it) 1989-06-09 1992-03-26 Ubalit S P A Metodo per la realizzazione di unita' conduttrici isolate colleganti elettricamente carichi elettrici con generatori di segnali elettrici e unita' ottenuta con tale metodo
JP4431266B2 (ja) * 2000-11-13 2010-03-10 日本特殊陶業株式会社 圧力センサ内蔵型スパークプラグユニット
JP4237481B2 (ja) * 2001-12-27 2009-03-11 ダイヤモンド電機株式会社 内燃機関用点火コイル
US6668810B1 (en) 2002-11-06 2003-12-30 Visteon Global Technologies, Inc. Ignition coil assembly with spark plug connector
DE10259545B3 (de) * 2002-12-19 2004-05-19 Robert Bosch Gmbh Vorrichtung zur Übertragung einer Hochspannung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60198713A (ja) * 1984-03-22 1985-10-08 Sawafuji Electric Co Ltd 内燃機関用点火コイルの製造方法

Also Published As

Publication number Publication date
ES2357582T3 (es) 2011-04-27
JP2005330965A (ja) 2005-12-02
EP1598910A1 (fr) 2005-11-23
DE502005010784D1 (de) 2011-02-17
DE102004024540A1 (de) 2005-12-15

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