EP0395511B1 - Vorrichtung zur Befestigung einer Zündspule, insbesondere für Brennkraftmaschine eines Kraftfahrzeuges - Google Patents
Vorrichtung zur Befestigung einer Zündspule, insbesondere für Brennkraftmaschine eines Kraftfahrzeuges Download PDFInfo
- Publication number
- EP0395511B1 EP0395511B1 EP90401128A EP90401128A EP0395511B1 EP 0395511 B1 EP0395511 B1 EP 0395511B1 EP 90401128 A EP90401128 A EP 90401128A EP 90401128 A EP90401128 A EP 90401128A EP 0395511 B1 EP0395511 B1 EP 0395511B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ignition coil
- coil
- cores
- fixing
- internal combustion
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 4
- 230000004907 flux Effects 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 11
- 238000004804 winding Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- 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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- 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
Definitions
- the invention relates to a multiple ignition coil, in particular for an internal combustion engine of a motor vehicle, ignition coil of the closed magnetic circuit type, comprising a central core around which the primary and secondary windings are arranged, said magnetic circuit being integrated in a molded plastic case.
- the magnetic flux return circuit is integrated into the housing by overmolding and constitutes, in a way, the metal frame of the latter.
- the fixing of such an assembly must therefore be particularly effective and solid so as to be able to withstand all the forces to which the coil is subjected in a vehicle.
- Such a type of attachment consists in providing holes in the magnetic flux return circuit in which the fixing screws are engaged.
- this system has several drawbacks: on the one hand, it requires machining of the magnetic flux return circuit and venting part of it, which inevitably causes its oxidation; on the other hand, this attachment forming an integral part of the metal frame of the coil has no flexibility able to absorb the significant vibrations to which such an assembly is inevitably subjected in a vehicle in operation, hence a non-negligible risk of breakage of the fixing screws.
- Document FR-A-2 619 164 also discloses a coil in which the fixing means consist of metal cores integral with a heat sink, itself produced in the form of two cradles in contact with the surface of the flow return circuit, and therefore in electrical continuity with the latter.
- the present invention makes it possible to solve these problems by proposing a fastening system having both sufficient mechanical solidity to withstand the tearing forces and a certain flexibility to absorb the effects due to vibrations as much as possible.
- the invention relates to an ignition coil according to claim 1.
- the metal cores consist of metal inserts whose cylindrical central part is knurled and whose ends are frustoconical.
- the metal inserts are cylindrical and comprise in their middle part an annular groove.
- the single plate is an exploded view of the various constituents making up the double ignition coil according to the invention.
- the single plate represents an exploded view of the various elements of an ignition coil 1 for an internal combustion engine of a motor vehicle.
- this is a coil enabling the 4 spark plugs corresponding to the 4 cylinders of the engine to be supplied.
- Each magnetic circuit is closed and has a primary winding 2 wound around a reel 3.
- a central magnetic core 4 of rectangular outline and generally composed of cut and laminated magnetic sheets is housed inside the reel 3.
- the secondary assembly S is held in lift on and around the primary assembly P.
- each of these terminals is intended to be conventionally connected, by an appropriate cable, to a spark plug associated with each cylinder of the engine.
- Each high-voltage terminal B1, B2, B3, B4 comprises a high-voltage stud 30 which is fixed by screwing in a connection plate 28, previously inserted in a groove 26 of the coil 5. On one end of this connection plate 28 , we just weld the end of the secondary winding.
- the low-voltage connection is effected by a connection assembly consisting of a precut link bar 61 which is inserted into a connector 60.
- the primary P and secondary S assemblies being assembled one inside the other, the two magnetic circuits M1 and M2 thus formed are introduced into the housing 7 of a housing 8 made of insulating material.
- a magnetic flux return circuit 9 the general U shape of which can be seen, consisting of cut and laminated magnetic sheets, is incorporated by molding in the housing 8.
- the magnetic flux return circuits 9 constitute the metal frame of the housing 8.
- the inserts 13 constitute metal cores completely mechanically separated from the metal frame of the housing 8.
- these cores or inserts 13 comprise a cylindrical central part 15 which is knurled and frustoconical ends 14 a , 14 b . Knurling allows better attachment of the insulating material of the housing 8 during overmolding.
- the frustoconical ends 14 a, 14 b allow for immobilization in translation of said cores 13.
- the cores or inserts 13 ′ have a generally cylindrical shape 15 ′ in which an annular groove 14 ′ is formed for attaching the material of the insulating housing 8 during overmolding.
- the appendices 11 of the housing 8 being mechanically independent of the rigid part of the housing 8, the means for fixing the coil, thus constituted according to the invention, naturally have a certain flexibility mechanical allowing them to absorb the effects of vibrations without risk of damaging the assembly.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Claims (5)
- Mehrfachzündspule (1), insbesondere für einen Kraftfahrzeug-Verbrennungsmotor, die, eingebaut in ein Gehäuse (8), mindestens zwei magnetische Komplexe (M1, M2), mindestens zwei Magnetflußrückleitungen (9), die eine Metallbewehrung bilden, und Metallkerne (13) zur Befestigung der Spule (1) umfaßt, dadurch gekennzeichnet, daß die Kerne (13) von der Metallbewehrung (9) getrennt sind und daß sie in Ansatzstücken (11) des Gehäuses (8) gehalten werden, dadurch, daß sie in diese eingegossen sind.
- Mehrfachzündkerze (1) nach Anspruch 1, dadurch gekennzeichnet, daß die Metallkerne (13) Einsätze mit einem gerieften zylindrischen Mittelteil (15) sind.
- Mehrfachzündkerze (1) nach Anspruch 2, dadurch gekennzeichnet, daß die Metallkerne (13) mindestens ein kegelstumpfförmiges Ende (14a, 14b) aufweisen.
- Mehrfachzündkerze (1) nach Anspruch 1, dadurch gekennzeichnet, daß die Metallkerne (13′) Einsätze mit einer auf der zylindrischen Oberfläche (15′) vorgesehenen Ringnut (14′) sind.
- Mehrfachzündkerze (1) nach Anspruch 1, dadurch gekennzeichnet, daß die Ansatzstücke (11) mit der Bewehrung des Gehäuses (8) durch Rippen (12) verbunden sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8905640 | 1989-04-28 | ||
FR8905640A FR2646549B1 (fr) | 1989-04-28 | 1989-04-28 | Dispositif de fixation d'une bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0395511A1 EP0395511A1 (de) | 1990-10-31 |
EP0395511B1 true EP0395511B1 (de) | 1994-06-29 |
Family
ID=9381218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90401128A Expired - Lifetime EP0395511B1 (de) | 1989-04-28 | 1990-04-25 | Vorrichtung zur Befestigung einer Zündspule, insbesondere für Brennkraftmaschine eines Kraftfahrzeuges |
Country Status (6)
Country | Link |
---|---|
US (1) | US5032814A (de) |
EP (1) | EP0395511B1 (de) |
JP (1) | JPH03129713A (de) |
DE (1) | DE69010267T2 (de) |
ES (1) | ES2058838T3 (de) |
FR (1) | FR2646549B1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0184869B1 (ko) | 1989-12-06 | 1999-05-15 | 위르겐 호이만 | 1,4-이치환된 2,6-디플루오로벤젠 화합물 및 액정 매질 |
US5257611A (en) * | 1991-12-23 | 1993-11-02 | Ford Motor Company | Ignition coil assembly and method of manufacture thereof |
US5295861A (en) * | 1991-12-23 | 1994-03-22 | Ford Motor Company | Connector for ignition coil assembly |
WO1993013533A1 (en) * | 1991-12-23 | 1993-07-08 | Ford Motor Company Limited | Ignition coil assembly and method of manufacture thereof |
US5335642A (en) * | 1992-09-03 | 1994-08-09 | Ford Motor Company | Ignition coil |
JP3188962B2 (ja) * | 1992-09-24 | 2001-07-16 | 東洋電装株式会社 | エンジンの点火コイル装置 |
US5444427A (en) * | 1992-09-24 | 1995-08-22 | Toyo Denso Kabushiki Kaisha | Ignition coil device for engine |
WO1995006319A1 (en) * | 1993-08-26 | 1995-03-02 | Ford Motor Company Limited | Ignition coil assembly |
DE4404957C2 (de) * | 1994-02-17 | 2003-08-21 | Bosch Gmbh Robert | Zündspule für eine Brennkraftmaschine |
US6118362A (en) * | 1997-01-24 | 2000-09-12 | Sundstrand Corporation | Integrated inductive assembly |
US6894597B2 (en) * | 2003-02-21 | 2005-05-17 | Delphi Technologies, Inc. | Axially potted progressive wound remote mount ignition coil |
JP6585412B2 (ja) * | 2015-07-29 | 2019-10-02 | 株式会社タムラ製作所 | インダクタ |
JP6585411B2 (ja) * | 2015-07-29 | 2019-10-02 | 株式会社タムラ製作所 | インダクタ |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB610241A (en) * | 1946-04-02 | 1948-10-13 | Andrew Bryce & Company Ltd W | Improvements in and relating to cased transformers, chokes and the like |
FR1256436A (fr) * | 1960-05-06 | 1961-03-17 | Philips Nv | Perfectionnements aux transformateurs noyés dans un matériau isolant |
DE3400870A1 (de) * | 1984-01-12 | 1985-07-25 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Induktivgeber |
DE3636938A1 (de) * | 1986-10-30 | 1988-05-11 | Thomson Cgr | Heizwandler fuer einen roentgengenerator |
JPS63142622A (ja) * | 1986-12-04 | 1988-06-15 | Nippon Denso Co Ltd | 内燃機関の点火コイル |
FR2619164B1 (fr) * | 1987-08-06 | 1989-12-01 | Equip Electr Moteur | Bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile, et element dissipateur de chaleur pour une telle bobine |
-
1989
- 1989-04-28 FR FR8905640A patent/FR2646549B1/fr not_active Expired - Lifetime
-
1990
- 1990-04-18 US US07/510,822 patent/US5032814A/en not_active Expired - Lifetime
- 1990-04-25 ES ES90401128T patent/ES2058838T3/es not_active Expired - Lifetime
- 1990-04-25 EP EP90401128A patent/EP0395511B1/de not_active Expired - Lifetime
- 1990-04-25 DE DE69010267T patent/DE69010267T2/de not_active Expired - Lifetime
- 1990-04-27 JP JP2110661A patent/JPH03129713A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2646549B1 (fr) | 1993-01-08 |
FR2646549A1 (fr) | 1990-11-02 |
EP0395511A1 (de) | 1990-10-31 |
DE69010267D1 (de) | 1994-08-04 |
US5032814A (en) | 1991-07-16 |
ES2058838T3 (es) | 1994-11-01 |
DE69010267T2 (de) | 1995-03-02 |
JPH03129713A (ja) | 1991-06-03 |
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