EP2052394B1 - Procédé de fabrication d'une bobine, en particulier une bobine d'allumage pour un véhicule à moteur - Google Patents

Procédé de fabrication d'une bobine, en particulier une bobine d'allumage pour un véhicule à moteur Download PDF

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Publication number
EP2052394B1
EP2052394B1 EP07788167A EP07788167A EP2052394B1 EP 2052394 B1 EP2052394 B1 EP 2052394B1 EP 07788167 A EP07788167 A EP 07788167A EP 07788167 A EP07788167 A EP 07788167A EP 2052394 B1 EP2052394 B1 EP 2052394B1
Authority
EP
European Patent Office
Prior art keywords
winding
coil
housing
primary winding
mandrel
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
EP07788167A
Other languages
German (de)
English (en)
Other versions
EP2052394A2 (fr
Inventor
Alfred Glatz
Konstantin Lindenthal
Thomas Pawlak
Axel Keib
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 EP2052394A2 publication Critical patent/EP2052394A2/fr
Application granted granted Critical
Publication of EP2052394B1 publication Critical patent/EP2052394B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • 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
    • H01F2005/025—Coils wound on non-magnetic supports, e.g. formers wound on coaxial arrangement of two or more formers
    • 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
    • H01F2038/122—Ignition, e.g. for IC engines with rod-shaped core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device

Definitions

  • the invention relates to a method for producing a coil, in particular an ignition coil for a motor vehicle.
  • a coil which has an elongate coil housing.
  • the coil housing several, pre-assembled modules or components are used. These components include, inter alia, a rod-shaped magnetic core which is concentrically surrounded by a secondary coil body having a secondary winding and a primary coil body having a primary winding.
  • the coil housing is filled with an insulating resin.
  • Such an ignition coil is inserted into the cylinder head of the engine in a corresponding receiving bore and contacted with the spark plug of the internal combustion engine.
  • the receiving bore for the ignition coil is limited in diameter. This contradicts the requirement to provide the highest possible ignition energy for the spark plug, as this would require a maximum in terms of installation space in the diameter of the ignition coil.
  • the primary wire for a primary winding is wound in a first step on a mandrel, which also serves as an inner part for an injection molding tool.
  • the primary winding together with mandrel is then encapsulated with a plastic, wherein the plastic simultaneously forms the outer housing of the pencil ignition coil.
  • the known primary winding is thus in terms of their radial extent a very favorable education possible because of a separate, the diameter the rod ignition coil enlarging primary coil body and is dispensed with an additional outer housing.
  • the inventive method for producing a coil, in particular an ignition coil for a motor vehicle with the features of claim 1 has the advantage that it allows for reducing the space by the waiver of a separate primary spool a simple and inexpensive production.
  • connection ring which is connected in advance with the ends of the primary winding and together with the winding mandrel in the housing Coil is inserted.
  • the winding mandrel with a variable diameter, such that for pulling out of the winding mandrel, the diameter of the winding mandrel is reduced so that the adhesion or bond between the winding mandrel and the primary winding when pulling out the winding mandrel from the housing will be annulled.
  • rod coil 10 is used in particular as an ignition coil in internal combustion engines of KraltGermanen, and is provided for direct contacting with a spark plug, not shown, which in turn is used together with the rod coil 10 in a shaft in the cylinder head of the engine.
  • the rod coil 10 includes in coaxial arrangement to a longitudinal axis 12 in a housing 13 made of plastic in a central position an elongated cylindrical core 14, which is also referred to as the I-core.
  • the core 14 is made of layered magnetizable material and is part of an open magnetic circuit.
  • a secondary coil body 18 Concentrically around the core 14, a secondary coil body 18 is arranged with a high-voltage secondary winding 19.
  • the secondary winding 19 is surrounded by a primary winding 20.
  • the primary winding 20 is surrounded with a small radial distance from a cylindrical portion 22 of the housing 13, which has a winding 19, 20 adapted longitudinal extent.
  • the section 22 of the housing 13, in turn, is enveloped without radial play by a longitudinally slotted sleeve-shaped return plate 23, which forms its outer shell in this area of the bar coil 10.
  • the return plate 23 serves as Inference element of the magnetic circuit of the bar coil 10 of the leadership of the magnetic field and is also referred to as the outer core.
  • metallic connector 27 are arranged, via which the primary winding 20 of the bar coil 10 is supplied with low voltage.
  • the second end portion 26 includes a metallic ferrule 28 connected to the secondary winding 19, through which the high voltage of the bar coil 10 is dissipated to the spark plug (not shown).
  • a connection ring 30 is provided, which is connected on the one hand to the primary winding 20, and on the other hand via a connecting wire 32 with the connector plugs 27. If necessary, a contour for guiding the primary winding 20 can be incorporated in the connection ring 30.
  • the interior of the housing 13 is preferably filled with an insulating resin 33 which also fills in particular the radial gap between the primary winding 20 and the secondary winding 19 lying opposite it.
  • the winding mandrel 35 has a cylindrical or preferably slightly conical shape, at least in the region provided for the primary winding 20.
  • the length of the mandrel 35 is dimensioned so that at least the primary winding 20 and the ring 29 and the connecting ring 30 find space on it.
  • the inner diameter of the ring 29 and the connecting ring 30 should be tuned to the outer diameter of the winding mandrel 35 so that a slight stripping of the ring 29 and the connecting ring 30 in the axial direction of the winding mandrel 35 is possible.
  • the ring 29 and the connecting ring 30 are positioned at a corresponding distance from each other on the winding mandrel 35, whereupon subsequently the wire of the primary winding 30 in at least one layer between the ring 29 and the connecting ring 30 is wound onto the winding mandrel 35.
  • winding mandrel 35 relative to a (not shown) wire dispenser rotatable and displaceable in the axial direction, or preferably characterized in that with fixed winding mandrel 35, the wire dispensing device rotates about the mandrel 35 and at the same time in the axial direction the winding mandrel 35 moves.
  • the wire ends 36, 37 of the primary winding 20 are electrically contacted with the connection ring 30, for example, welded.
  • the wire of the primary winding 20 may be formed as a so-called baked enamel wire.
  • the baked enamel layer of the primary winding 20 is activated by a corresponding heat treatment, so that thereafter the primary winding 20 is formed as a compact, solid unit.
  • the mandrel 35 is inserted together with the primary winding 20 in the housing 13 until the primary winding 20 is located at the intended position in the housing 13 ( FIG. 2 ).
  • the winding mandrel 35 or the ring 29 then cooperates with a tubular stripping element 38 in the exemplary embodiment which remains stationary in contact with the ring 29 when the winding mandrel 35 is withdrawn from the housing 13 during the winding mandrel 35 is movable relative thereto in the longitudinal direction of the housing 13.
  • the winding mandrel 35 to facilitate the stripping operation of the primary winding 20 of the winding mandrel 35 is slightly conical, such that the diameter of the winding mandrel 35 is reduced viewed in the direction of the connection ring 30.
  • an additional intermediate layer 40 is provided ( FIG. 1 ).
  • the intermediate layer 40 consists for example of a possibly coated paper or plastic film layer, which may be perforated if necessary.
  • the intermediate layer 40 is first applied to the winding mandrel 35 prior to winding the primary winding 20 onto the winding mandrel 35, and then stripped off together with the primary winding 20 in the housing 13.
  • FIGS. 3 and 4 a modified winding mandrel 35a shown.
  • the mandrel 35a is characterized in that it is variable in diameter. In the example shown, this is realized by movable in the direction of the double arrows 41 segments 42, but of course other embodiments are conceivable.
  • the winding mandrel 35a For winding up the primary winding 20 or the intermediate layer 40 in this case has the winding mandrel 35a corresponding to the FIG. 3 its largest diameter.
  • the wiping element 38 can be dispensed with in the case of the modified winding mandrel 35a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une bobine (10), en particulier une bobine d'allumage pour un véhicule à moteur, lors duquel un enroulement du circuit primaire (20) est enroulé sur un mandrin de bobinage (35; 35a) est décrit. Le mandrin de bobinage (35; 35a) est ensuite introduit dans un boîtier (13) de la bobine (10), puis le mandrin de bobinage (35; 35a) est enlevé du boîtier (13). L'enroulement du circuit primaire (20) reste dans le boîtier (13). Pour terminer, d'autres composants de la bobine (10), en particulier un corps de bobine secondaire (18) entouré d'un enroulement du circuit secondaire (19), sont introduits dans le boîtier (13), de telle manière que l'enroulement du circuit secondaire (19) est disposé concentriquement à l'intérieur de l'enroulement du circuit primaire (20) en renonçant à un corps de bobine primaire séparé. Le procédé selon l'invention permet une structure plus compacte du diamètre de la bobine (10).

Claims (8)

  1. Procédé de fabrication d'une bobine (10), en particulier d'une bobine d'allumage pour un véhicule à moteur, selon lequel un enroulement primaire (20) est enroulé sur un mandrin d'enroulement (35 ; 35a), ensuite le mandrin d'enroulement (35 ; 35a) est introduit dans un boîtier (13) de la bobine (10), après quoi le mandrin d'enroulement (35 ; 35a) est retiré du boîtier (13), l'enroulement primaire (20) restant dans le boîtier (13), et ensuite un corps de bobine secondaire (18) entouré d'un enroulement secondaire (19) étant inséré dans le boîtier (13) de telle sorte que l'enroulement secondaire (19) soit disposé concentriquement à l'intérieur de l'enroulement primaire (20) en se passant d'un corps de bobine primaire séparé.
  2. Procédé selon la revendication 1, caractérisé en ce que le début, respectivement la fin, de l'enroulement primaire (20) est relié à un élément de raccordement (30) de préférence annulaire, en ce que l'élément de raccordement (30) est appliqué, conjointement avec l'enroulement primaire (20), sur le mandrin d'enroulement (35 ; 35a), et en ce que l'élément de raccordement (30) reste dans le boîtier (13) en vue de la mise en contact de l'enroulement primaire (20) avec une tension d'alimentation de la bobine (10).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'une couche intermédiaire (40) est appliquée sur le mandrin d'enroulement (35 ; 35a) entre le mandrin d'enroulement (35 ; 35a) et l'enroulement primaire (20), laquelle reste dans le boîtier (13) conjointement avec l'enroulement primaire (20).
  4. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'une résine isolante (33) est coulée dans l'espace intermédiaire dans le boîtier (13) entre l'enroulement secondaire (19) et l'enroulement primaire (20).
  5. Dispositif pour mettre en oeuvre le procédé selon l'une quelconque des revendications 1 à 4, comprenant un mandrin d'enroulement (35) sur lequel le fil d'un enroulement primaire (20) peut être enroulé, caractérisé en ce que le mandrin d'enroulement (35) coopère avec un élément d'enlèvement (38) pour enlever l'enroulement primaire (20) dans le boîtier (13) de la bobine (10), le mandrin d'enroulement (35) et l'élément d'enlèvement (38) pouvant être déplacés relativement l'un par rapport à l'autre.
  6. Dispositif selon la revendication 5, caractérisé en ce que l'élément d'enlèvement (38) agit sur un élément de retenue (29) qui est disposé du côté de l'enroulement primaire (20) qui est opposé à l'élément de raccordement (30).
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que le mandrin d'enroulement (35) présente une forme conique dans la région de l'enroulement primaire (20).
  8. Dispositif pour mettre en oeuvre le procédé selon l'une quelconque des revendications 1 à 4, comprenant un mandrin d'enroulement (35a) sur lequel un enroulement primaire (20) peut être enroulé, caractérisé en ce que le diamètre du mandrin d'enroulement (35a) peut être modifié au moins dans la région de l'enroulement primaire (20).
EP07788167A 2006-08-09 2007-08-02 Procédé de fabrication d'une bobine, en particulier une bobine d'allumage pour un véhicule à moteur Expired - Fee Related EP2052394B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006037169A DE102006037169A1 (de) 2006-08-09 2006-08-09 Verfahren zur Herstellung einer Spule, insbesondere einer Zündspule für ein Kraftfahrzeug
PCT/EP2007/058014 WO2008017631A2 (fr) 2006-08-09 2007-08-02 Procédé de fabrication d'une bobine, en particulier une bobine d'allumage pour un véhicule à moteur

Publications (2)

Publication Number Publication Date
EP2052394A2 EP2052394A2 (fr) 2009-04-29
EP2052394B1 true EP2052394B1 (fr) 2012-03-21

Family

ID=38904715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07788167A Expired - Fee Related EP2052394B1 (fr) 2006-08-09 2007-08-02 Procédé de fabrication d'une bobine, en particulier une bobine d'allumage pour un véhicule à moteur

Country Status (5)

Country Link
US (1) US8230584B2 (fr)
EP (1) EP2052394B1 (fr)
JP (1) JP2010500744A (fr)
DE (1) DE102006037169A1 (fr)
WO (1) WO2008017631A2 (fr)

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JP2009278074A (ja) * 2008-04-15 2009-11-26 Denso Corp 内燃機関用点火コイルおよびその製造方法
WO2012037658A1 (fr) 2010-09-24 2012-03-29 Research In Motion Limited Procédé et appareil pour une commande d'accès différenciée
US10423248B2 (en) * 2011-10-28 2019-09-24 Wacom Co., Ltd. Touch-sensitive system with motion filtering
DE102011088519A1 (de) * 2011-12-14 2013-06-20 Metabowerke Gmbh Stator für einen Elektromotor sowie Verfahren zur Herstellung eines Stators für einen Elektromotor
US10381903B2 (en) 2012-12-12 2019-08-13 Metabo-Allee 1 Method for producing a stator for an electric motor

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Also Published As

Publication number Publication date
US20100018033A1 (en) 2010-01-28
JP2010500744A (ja) 2010-01-07
WO2008017631A2 (fr) 2008-02-14
WO2008017631A3 (fr) 2008-04-10
DE102006037169A1 (de) 2008-02-14
EP2052394A2 (fr) 2009-04-29
US8230584B2 (en) 2012-07-31

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