EP0118454A1 - Zündspule für verbennungsmotoren. - Google Patents

Zündspule für verbennungsmotoren.

Info

Publication number
EP0118454A1
EP0118454A1 EP83901931A EP83901931A EP0118454A1 EP 0118454 A1 EP0118454 A1 EP 0118454A1 EP 83901931 A EP83901931 A EP 83901931A EP 83901931 A EP83901931 A EP 83901931A EP 0118454 A1 EP0118454 A1 EP 0118454A1
Authority
EP
European Patent Office
Prior art keywords
circuit
sheets
ignition coil
branch
thickness
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
EP83901931A
Other languages
English (en)
French (fr)
Other versions
EP0118454B1 (de
Inventor
Jean Marie Pierret
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.)
Ducellier et Cie
Original Assignee
Ducellier et Cie
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 Ducellier et Cie filed Critical Ducellier et Cie
Publication of EP0118454A1 publication Critical patent/EP0118454A1/de
Application granted granted Critical
Publication of EP0118454B1 publication Critical patent/EP0118454B1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • 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 present invention relates to an ignition coil, for internal combustion engines, ignition coil comprising: a closed magnetic circuit consisting of sheets cut and stacked on each other; a permanent magnet disposed in a branch of thickness E of said circuit; primary and secondary windings housed in an insulating box surrounding another branch of thickness E '.
  • This ignition coil has a magnetic flux bypass circuit, so that the flow reversal created in the branch, of thickness E ', by the current flowing in the primary winding, does not demagnetize the magnet permanent.
  • This magnetic flux bypass circuit consists of two sheets of mild steel, which sheets have a tab provided with a hole, or an opening, receiving one of the fixing screws of the ignition coil on the motor vehicle.
  • Such known ignition coils in particular by French patent applications: FR-A-2,476,218 and 2,486,160, have the disadvantage that in order to secure, with the aid of rivets, the branches of thickness E and E ', it it is necessary to provide a covering of the ends of the branch E ', which leads to providing a cutting tool for the sheets constituting the thick branch E' and three cutting tools for all the sheets constituting the branch E.
  • the magnetic circuit can only be joined after having placed the insulating box, containing the primary and secondary windings, on the branch of thickness E 'and having subsequently stacked a number of sheets of the branch of thickness E, so as to constitute a packet of thickness corresponding to the thickness E '. After which, in a third step, the circuit must be completed by the sheets of the branch of thickness E which ensure the covering of the ends of the branch of thickness E '.
  • the object of the present invention is to remedy these drawbacks and to this end relates to a coil with a closed magnetic circuit, consisting of cut sheets stacked on top of each other, ignition coil comprising a permanent magnet disposed in one of the branches, of the closed magnetic circuit; primary and secondary windings housed in an insulating box surrounding another branch, and a circuit for bypassing the magnetic flux, characterized in that the closed magnetic circuit comprises a first part of thickness E 'and of U shape, of which the one of the portions is cut in a bevel and a second part of thickness E greater than the thickness E ', which second part of L-shape comprises a portion cut in a bevel so that, after positioning, on the branch of thickness E ′, of the insulating case containing the primary and secondary windings, and insertion between the bevelled portions of the first and second parts, said parts are secured by means of the sheets constituting the circuit for deriving the magnetic flux.
  • a first advantage obtained by this invention is that the cutting of the sheets of the magnetic circuit requires only one tool per part, which reduces the expenses relating to the cutting tools.
  • a second advantage is the reduction in assembly time, due to the fact that the sheets which, in the prior art ensured the connection of the magnetic circuit, by covering the ends of the branch E ', are eliminated, the magnetic circuit being secured by an extension of the sheets constituting the bypass circuit of the magnetic flux.
  • Figure 1 is a longitudinal view of an ignition coil according to the invention.
  • FIG. 2 is a side view along arrow A of the ignition coil of FIG. 1.
  • FIG. 3 is a side view, along arrow B, of the ignition coil of FIG. 1.
  • FIG. 4 is a view, from above, of the cut sheets constituting by stacking one on top of the other, the first and second parts of the closed magnetic circuit of the ignition coil of FIG. 1.
  • Figure 5 is a top view of one of the two sheets constituting the bypass circuit, of the magnetic flux, which is provided the ignition coil of figure 1.
  • the ignition coil according to the invention comprises a closed magnetic circuit 1 made up of sheets cut and stacked one on top of the other.
  • a permanent magnet 2 magnetized in the direction of its thickness is placed in a branch 3 of the closed magnetic circuit 1.
  • a primary winding 4 and a secondary winding 5 housed in an insulating box 6 are embedded in a resin 7, the insulating box 6 surrounding a branch 8 of thickness E ′, FIGS. 1, 2 and 3
  • the magnetic flux bypass circuit consists of two sheets 9, of mild steel, arranged, by means of insulating plates 10 and 11, of on either side of the plans defining the thickness E of the branch 3.
  • the closed magnetic circuit 1 comprises a first part 12, FIGS. 1 and 4.
  • the first part 12 consists of sheets, cut into a U-shape, comprising a portion 12a cut in a bevel 12b. After stacking the sheets on top of each other, the portion 12a forms a half-branch of the branch 3, and a portion 12c forms the branch 8 of the closed magnetic circuit 1.
  • a second part 13, of the closed magnetic circuit 1, FIGS. 1 and 4 is made up of sheets cut out in the shape of an L, which sheets comprise a portion 13a cut out in bevel 13b so as to form the other half-branch of branch 3 .
  • the first and second parts 12 and 13 are secured, using known means, such as rivets 14, 15, and by extensions 9b of the sheets 9 constituting the bypass circuit of the magnetic flux.
  • the portion 13a of the second part 13 of the closed magnetic circuit 1 and the permanent magnet 2, FIG. 3 are in contact with the sheets 9 of the magnetic flux bypass circuit so that the air gap reluctance of said circuit is equivalent to the air gap reluctance of the circuit described in French patent application FR-A-2,486,160. Consequently, the plates 10 and 11 of the present invention have a thickness equal to 2d relative to the thickness d of the insulating plates of the French patent application FR-A-2,486, 160.
  • the insulating plates 10 and 11 are molded with the insulating casing 6, and their internal faces 10a and 11a constitute a housing for the portion 12a of the first part 12 of the closed magnetic circuit 1, FIG. 3.
  • the extension 9b of the sheets 9 includes a bend 9c, FIG. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP83901931A 1982-08-11 1983-07-01 Zündspule für verbennungsmotoren Expired EP0118454B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8213965 1982-08-11
FR8213965A FR2531751A1 (fr) 1982-08-11 1982-08-11 Bobine d'allumage pour moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP0118454A1 true EP0118454A1 (de) 1984-09-19
EP0118454B1 EP0118454B1 (de) 1987-01-07

Family

ID=9276796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83901931A Expired EP0118454B1 (de) 1982-08-11 1983-07-01 Zündspule für verbennungsmotoren

Country Status (14)

Country Link
US (1) US4546753A (de)
EP (1) EP0118454B1 (de)
DE (1) DE3369027D1 (de)
ES (1) ES273881Y (de)
FR (1) FR2531751A1 (de)
IL (1) IL69457A (de)
IT (1) IT1168780B (de)
MA (1) MA19865A1 (de)
OA (1) OA07655A (de)
PT (1) PT77076B (de)
RO (1) RO88098A (de)
SU (1) SU1292671A3 (de)
UA (1) UA7144A1 (de)
WO (1) WO1984000843A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619984A1 (de) * 1986-06-13 1987-12-17 Bosch Gmbh Robert Zuendspule fuer zuendanlagen von brennkraftmaschinen
DE68906607T2 (de) * 1988-07-28 1993-10-28 Nippon Denso Co Zündspule.
JPH03149805A (ja) * 1989-11-07 1991-06-26 Aisan Ind Co Ltd 内燃機関用点火コイル
JPH04143461A (ja) * 1990-10-05 1992-05-18 Honda Motor Co Ltd 内燃機関の点火装置
US5285761A (en) * 1992-09-03 1994-02-15 Ford Motor Company Ignition coil
US5335642A (en) * 1992-09-03 1994-08-09 Ford Motor Company Ignition coil
US5241941A (en) * 1992-09-03 1993-09-07 Ford Motor Company Ignition coil
US5333593A (en) * 1993-01-15 1994-08-02 Ford Motor Company Energy-on-demand ignition coil
JPH0845755A (ja) * 1994-08-02 1996-02-16 Aisan Ind Co Ltd 内燃機関用点火コイル
US5692483A (en) * 1995-06-30 1997-12-02 Nippondenso Co., Ltd. Ignition coil used for an internal combustion engine
US6118366A (en) * 1997-12-09 2000-09-12 Siemens Automotive Corporation Electromagnetic actuator with split housing assembly
US8289117B2 (en) * 2010-06-15 2012-10-16 Federal-Mogul Corporation Ignition coil with energy storage and transformation
JP5192531B2 (ja) * 2010-10-29 2013-05-08 三菱電機株式会社 内燃機関用点火コイル
US11289267B2 (en) * 2017-03-30 2022-03-29 Mitsubishi Electric Corporation Ignition coil including a center iron core and side iron cores
JP7358839B2 (ja) * 2019-08-22 2023-10-11 株式会社デンソー 点火コイル

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1623426A (en) * 1927-04-05 Induction coil foe ignition systems
US1545429A (en) * 1923-01-12 1925-07-07 Gen Motors Res Corp Ignition apparatus
US1953174A (en) * 1930-05-28 1934-04-03 Delco Remy Corp Ignition device
GB677051A (en) * 1949-12-21 1952-08-06 Philips Electrical Ind Ltd Improvements in or relating to transformers or inductance coils
BE505464A (de) * 1951-04-23
ES425913A1 (es) * 1974-05-03 1976-07-01 Arjona Vallet Perfeccionamientos introducidos en la construccion de nu- cleos para reactancias.
FR2321054A1 (fr) * 1975-08-14 1977-03-11 Sev Marchal Bobine d'allumage
FR2476218A1 (fr) * 1980-02-20 1981-08-21 Ducellier & Cie Bobine d'allumage pour moteurs a combustion interne
FR2486160A1 (fr) * 1980-07-04 1982-01-08 Ducellier & Cie Perfectionnement aux bobines d'allumage pour moteurs a combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8400843A1 *

Also Published As

Publication number Publication date
SU1292671A3 (ru) 1987-02-23
IT1168780B (it) 1987-05-20
OA07655A (fr) 1985-05-23
IT8348829A0 (it) 1983-08-09
FR2531751B1 (de) 1984-12-21
PT77076A (fr) 1983-08-01
RO88098A (ro) 1985-11-30
IL69457A (en) 1987-09-16
ES273881Y (es) 1985-01-01
IL69457A0 (en) 1983-11-30
UA7144A1 (uk) 1995-06-30
DE3369027D1 (en) 1987-02-12
FR2531751A1 (fr) 1984-02-17
MA19865A1 (fr) 1984-04-01
ES273881U (es) 1984-06-16
EP0118454B1 (de) 1987-01-07
WO1984000843A1 (fr) 1984-03-01
PT77076B (fr) 1986-01-27
US4546753A (en) 1985-10-15
RO88098B (ro) 1985-10-31

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