EP0265463A1 - Ignition coil for ignition apparatus of internal combustion engines - Google Patents

Ignition coil for ignition apparatus of internal combustion engines

Info

Publication number
EP0265463A1
EP0265463A1 EP19870902407 EP87902407A EP0265463A1 EP 0265463 A1 EP0265463 A1 EP 0265463A1 EP 19870902407 EP19870902407 EP 19870902407 EP 87902407 A EP87902407 A EP 87902407A EP 0265463 A1 EP0265463 A1 EP 0265463A1
Authority
EP
European Patent Office
Prior art keywords
parts
coil according
shoulder
ignition
strips
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.)
Withdrawn
Application number
EP19870902407
Other languages
German (de)
French (fr)
Inventor
Hans Alber
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 EP0265463A1 publication Critical patent/EP0265463A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B3/00—Key-type connections; Keys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/14—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using wedges
    • 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
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together

Definitions

  • Ignition coil for ignition systems of internal combustion engines Ignition coil for ignition systems of internal combustion engines
  • the invention relates to an ignition coil for ignition systems of internal combustion engines according to the preamble of claim 1.
  • ignition coils with a so-called closed iron circuit
  • the division of the core is necessary for the assembly of the primary and / or secondary winding.
  • Welding and riveting is used as a means of mutually fastening the two parts in the region of the essentially butt-jointed end faces.
  • the disadvantages are the heat development during welding and additional elements and a riveting station when riveting.
  • FIG. 1 shows an iron core consisting of two C-shaped parts for ignition coils of ignition systems for internal combustion engines, the two parts being fastened to one another by means of two spring clips, in a spatial representation
  • Figure 2 shows the spring clip according to Figure 1 in a spatial representation
  • 3 shows sections of both parts of the iron core with the clip designed as a fastening pin, likewise in a spatial representation.
  • An O-shaped core of an ignition coil for ignition systems of internal combustion engines is assembled from two C-shaped parts 10, 11, which consist of packaged soft iron laminations 23.
  • Each part 10, 11 has a longitudinal leg 12, 13 and a yoke 1, 15 with an air gap 16.
  • a transverse leg connecting the two longitudinal legs 12, 13 is formed by a section 17 and 18, the end faces 19 of which abut each other and to the adjacent cutting edge sides 20, 21 of the parts 10, 11 are rectangular.
  • a groove 22 is arranged transversely to the slats 23 and parallel to the end face 19 of both sections 17, 18.
  • the flank of each groove 22 facing the end face 19 is shaped as an undercut and forms a shoulder 24.
  • a bracket 25 (also FIG. 2) is made of spring sheet metal and is symmetrical with respect to a plane 26.
  • the clip 25 has a curved back 27 with a first and second hook 28 each forming a strip. Both strips 28 are divergent (diverging) into the parts 10, 11 of the core in the insertion direction according to arrow 29 of the clip 25.
  • the two parts 10, 11 are mutually fastened in that the clamp 25 is inserted in the insertion direction according to arrow 29 (FIG. 1) in both the grooves 22 on the inner cutting edge side 21 and thereby cooperate with the shoulders 2 * and - due to the suit (Divergence) - press both end faces 19 firmly together. In the same way, the outer cutting edge side 20 is clamped.
  • the second exemplary embodiment in FIG. 3 shows the section 37, 38 of both parts 30, 31 of the core made of packaged soft iron sheet metal laminations 23.
  • a bore 32 is arranged at right angles to the laminations 23 and parallel to the end face 39, each bore 32 forming a shoulder 34 facing the end face 39.
  • a slot 33 connects the bore 32 to the end face 39.
  • the bracket 45 is made of steel and is also symmetrical with respect to the plane 26. It has two pins 48, each acting as a strip, which are connected by a web 47.
  • the dimension, in particular the cross section, of the bracket 45 is matched to the bores 32 and the slots 33 of both parts 30, 31 in such a way that the bracket 45 pushed into the bores 32 and slots 33 in the direction of the arrow 29 contacts both sections 37, 38 whose end face 39 compresses, which is considerably increased by the tightening (divergence) of the clamp 45.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

Un noyau feuilleté en fer doux (23) en deux parties (30, 31) comprend dans chaque partie un alésage (32), ces alésages étant reliés par une rainure (33). Un crampon métallique (45) comprend deux chevilles (48) ayant chacune une dépouille conique et reliées par une traverse (47). On relie les deux parties (30, 31) en introduisant le crampon (45) dans le sens indiqué par la flèche (29) (Fig. 2). On assemble ainsi les deux parties (30, 31) avec des moyens techniques simples.A soft iron laminated core (23) in two parts (30, 31) comprises in each part a bore (32), these bores being connected by a groove (33). A metal clamp (45) comprises two pins (48) each having a conical draft and connected by a crosspiece (47). The two parts are connected (30, 31) by introducing the clamp (45) in the direction indicated by the arrow (29) (Fig. 2). The two parts (30, 31) are thus assembled with simple technical means.

Description

Zündspule für Zündanlagen von Brennkraftmaschinen Ignition coil for ignition systems of internal combustion engines
Stand der TechnikState of the art
Die Erfindung betrifft eine Zündspule für Zündanlagen von Brenn¬ kraftmaschinen nach der Gattung des Anspruchs 1. Bei derartigen Zündspulen mit einem sogenannten geschlossenen Eisenkreis ist die Teilung des Kernes für die Montage der Primär- und/oder Sekundär¬ wicklung erforderlich. Als Mittel zur gegenseitigen Befestigung bei¬ der Teile im Bereich der im wesentlichen stumpf aneinanderstoßenden Stirnflächen wird das Schweißen und Nieten verwendet. Nachteilig sind beim Schweißen die Wärmeentwicklung und beim Nieten zusätzliche Elemente und eine Nietstation.The invention relates to an ignition coil for ignition systems of internal combustion engines according to the preamble of claim 1. In such ignition coils with a so-called closed iron circuit, the division of the core is necessary for the assembly of the primary and / or secondary winding. Welding and riveting is used as a means of mutually fastening the two parts in the region of the essentially butt-jointed end faces. The disadvantages are the heat development during welding and additional elements and a riveting station when riveting.
Vorteile der ErfindungAdvantages of the invention
Mit der Zündspule für Zündanlagen von Brennkraftmaschinen nach der Erfindung wird das im vorerwähnten Stand der Technik dargelegte Problem in technisch einfachen Mitteln gelöst. Der Erfindung liegt der Gedanke zugrunde, die notorisch bekannte Klammerwirkung für dieWith the ignition coil for ignition systems of internal combustion engines according to the invention, the problem set out in the aforementioned prior art is solved in technically simple means. The invention is based on the idea of the notoriously known brace effect for
- gegenseitige Befestigung der insbesondere aus Weicheisen-Blech¬ lamellen bestehenden Kernteile zu verwenden. Dadurch, daß die- Mutual fastening of the core parts consisting in particular of soft iron sheet metal lamellae. Because the
*.*.
* Klammer im wesentlichen entweder auf beide Teile nur aufzusprengen oder in diese nur einzuschlagen ist, sind kein oder nur einfache Montagevorrichtungen erforderlich. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteran¬ sprüchen beschrieben. Mit Anspruch 3 und 4 sind zwei Wege gewiesen, die Klammer als Verbindungsstift oder als Sprengteil auszubilden. Mit Anspruch 7 werden beide Teile mit verhältnismäßig großen Kräften an deren Stirnfläche aneinander gedrückt.* Basically, either only to be blown open onto both parts or only to be hammered into them, no or only simple assembly devices are required. Advantageous developments of the invention are described in the subclaims. With claims 3 and 4 two ways are shown to form the clip as a connecting pin or as an explosive device. With claim 7, both parts are pressed against each other with relatively large forces on the end face.
Zeichnungdrawing
Zwei Ausführungsbeispiele der Erfindung sind in der Zeichnung darge¬ stellt und in der Figurenbeschreibung, näher erläutert. Es zeigen je¬ weils in vergrößerter Darstellung: Figur 1 einen aus zwei C-förmigen Teilen bestehenden Eisenkern für Zündspulen von Zündanlagen für Brennkraftmaschinen, wobei beide Teile mittels zweier Federklammern gegenseitig befestigt sind, in raumbildlicher Darstellung; Figur 2 die Federklammer gemäß Figur 1 in raumbildlicher Darstellung; Figur 3 abschnittsweise beide Teile des Eisenkernes mit der als Befesti¬ gungsstift ausgebildeten Klammer, ebenfalls in raumbildlieher Dar¬ stellung.Two exemplary embodiments of the invention are shown in the drawing and explained in more detail in the description of the figures. 1 shows an iron core consisting of two C-shaped parts for ignition coils of ignition systems for internal combustion engines, the two parts being fastened to one another by means of two spring clips, in a spatial representation; Figure 2 shows the spring clip according to Figure 1 in a spatial representation; 3 shows sections of both parts of the iron core with the clip designed as a fastening pin, likewise in a spatial representation.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Ein O-förmiger Kern einer Zündspule für Zündanlagen von Brennkraft- maschinen ist aus zwei C-förmigen Teilen 10, 11 zusammengefügt, die aus paketierten Weicheisen-Blechlamellen 23 bestehen. Jedes Teil 10, 11 hat einen Längsschenkel 12, 13 und ein Joch 1 , 15 mit einem Luftspalt 16. Einen beide Längsschenkel 12, 13 verbindenden Quer¬ schenkel bilden ein Abschnitt 17 und 18, deren Stirnflächen 19 stumpf aneinander stoßen und zu den benachbarten Schnittkantenseiten 20, 21 der Teile 10, 11 rechtwinklig sind.An O-shaped core of an ignition coil for ignition systems of internal combustion engines is assembled from two C-shaped parts 10, 11, which consist of packaged soft iron laminations 23. Each part 10, 11 has a longitudinal leg 12, 13 and a yoke 1, 15 with an air gap 16. A transverse leg connecting the two longitudinal legs 12, 13 is formed by a section 17 and 18, the end faces 19 of which abut each other and to the adjacent cutting edge sides 20, 21 of the parts 10, 11 are rectangular.
In der Schnittkantenseite 20, 21 der Teile 10, 11 ist eine Nut 22 quer zu den Lamellen 23 und parallel zur Stirnfläche 19 beider Ab¬ schnitte 17, 18 angeordnet. Die zur Stirnfläche 19 weisende Flanke einer jeden Nut 22 ist als Hinterschnitt geformt und bildet eine Schulter 24. Eine Klammer 25 (auch Figur 2) ist aus Federblech hergestellt und bezüglich einer Ebene 26 symmetrisch. Die Klammer 25 hat einen gewölbten Rücken 27 mit einem ersten und zweiten jeweils eine Leiste bildenden Haken 28. Beide Leisten 28 sind in Einschubrichtung gemäß Pfeil 29 der Klammer 25 in die Teile 10, 11 des Kernes divergent (auseinanderlaufend).In the cutting edge side 20, 21 of the parts 10, 11, a groove 22 is arranged transversely to the slats 23 and parallel to the end face 19 of both sections 17, 18. The flank of each groove 22 facing the end face 19 is shaped as an undercut and forms a shoulder 24. A bracket 25 (also FIG. 2) is made of spring sheet metal and is symmetrical with respect to a plane 26. The clip 25 has a curved back 27 with a first and second hook 28 each forming a strip. Both strips 28 are divergent (diverging) into the parts 10, 11 of the core in the insertion direction according to arrow 29 of the clip 25.
Die beiden Teile 10, 11 werden dadurch gegenseitig befestigt, daß die Klammer 25 in Einschubrichtung gemäß Pfeil 29 (Figur 1) in bei¬ den Nuten 22 der inneren Schnittkantenseite 21 eingeschoben wird und dabei mit den Schultern 2* zusammenwirken und - bedingt durch den Anzug (Divergenz) - beide Stirnflächen 19 fest aneinanderdrücken. In gleicher Weise wird die äußere Schnittkantenseite 20 verklammert.The two parts 10, 11 are mutually fastened in that the clamp 25 is inserted in the insertion direction according to arrow 29 (FIG. 1) in both the grooves 22 on the inner cutting edge side 21 and thereby cooperate with the shoulders 2 * and - due to the suit (Divergence) - press both end faces 19 firmly together. In the same way, the outer cutting edge side 20 is clamped.
Das zweite AusfUhrungsbeispiel in Figur 3 zeigt von beiden Teilen 30, 31 des Kernes aus paketierten Weicheisen-Blechlamellen 23 deren Abschnitt 37, 38. In jedem Abschnitt ist eine Bohrung 32 recht¬ winklig zu den Lamellen 23 und parallel zur Stirnfläche 39 angeord¬ net, wobei jede Bohrung 32 eine zur Stirnfläche 39 weisende Schulter 34 bildet. Ein Schlitz 33 verbindet die Bohrung 32 mit der Stirn¬ fläche 39.The second exemplary embodiment in FIG. 3 shows the section 37, 38 of both parts 30, 31 of the core made of packaged soft iron sheet metal laminations 23. In each section, a bore 32 is arranged at right angles to the laminations 23 and parallel to the end face 39, each bore 32 forming a shoulder 34 facing the end face 39. A slot 33 connects the bore 32 to the end face 39.
Die Klammer 45 ist aus Stahl hergestellt und bezüglich der Ebene 26 ebenfalls symmetrisch. Sie hat zwei jeweils als Leiste wirkende Stifte 48, die durch einen Steg 47 verbunden sind. Die Abmessung, insbesondere der Querschnitt der Klammer 45. ist auf die Bohrungen 32 und die Schlitze 33 beider Teile 30, 31 derart abgestimmt, daß die in Pfeilrichtung 29 in die Bohrungen 32 und Schlitze 33 einge¬ schobene Klammer 45 beide Abschnitte 37, 38 an deren Stirnfläche 39 zusammendrückt, was durch den Anzug (Divergenz) der Klammer 45 be¬ achtlich erhöht wird. The bracket 45 is made of steel and is also symmetrical with respect to the plane 26. It has two pins 48, each acting as a strip, which are connected by a web 47. The dimension, in particular the cross section, of the bracket 45 is matched to the bores 32 and the slots 33 of both parts 30, 31 in such a way that the bracket 45 pushed into the bores 32 and slots 33 in the direction of the arrow 29 contacts both sections 37, 38 whose end face 39 compresses, which is considerably increased by the tightening (divergence) of the clamp 45.

Claims

- *+Ansprüche - * + claims
1. Zündspule für Zündanlagen von Brennkraftmaschinen mit einem min¬ destens aus zwei Teilen zusammengefügten Kern aus paketierten Lamellen, insbesondere aus Weicheisen-Blechlamellen, wobei die Stirnfläche des einen Teiles und die des anderen Teiles stumpf an¬ einanderstoßen, und mit Mitteln zur gegenseitigen Befestigung beider Teile, dadurch gekennzeichnet, daß das Mittel mindestens eine Klammer (25, 45) ist.1. Ignition coil for ignition systems of internal combustion engines with a core composed of at least two parts composed of packaged lamellae, in particular of soft iron sheet metal lamellae, the end face of one part and that of the other part butting each other, and with means for mutually fastening both Parts, characterized in that the means is at least one bracket (25, 45).
2. Spule nach Anspruch 1, dadurch gekennzeichnet, daß die Klammer (25, 45) zwei Leisten (28, 48) aufweist, die einander zugewandt und miteinander verbunden sind, daß das Teil (10, 11; 30, 31) eine mit der einen Leiste zusammenwirkende Schulter (24, 34) aufweist und daß die Schulter quer zu den Lamellen (23), insbesondere parallel zur Stirnfläche (19, 39), beider Teile (10, 11) angeordnet ist.2. Coil according to claim 1, characterized in that the bracket (25, 45) has two strips (28, 48) facing each other and connected to each other, that the part (10, 11; 30, 31) one with the has a strip cooperating shoulder (24, 34) and that the shoulder of the two parts (10, 11) is arranged transversely to the slats (23), in particular parallel to the end face (19, 39).
3. Spule nach Anspruch 2, dadurch gekennzeichnet, daß die Klammer (45) zwei Stifte (48) aufweist, welche die Leisten bilden und durch einen Steg (47) verbunden sind, daß eine Bohrung (32) in jedem Teil (30, 31) die Schulter (34) bildet und daß beide Bohrungen (32) durch einen Schlitz (33) verbunden sind. 3. Coil according to claim 2, characterized in that the clip (45) has two pins (48) which form the strips and are connected by a web (47) that a bore (32) in each part (30, 31 ) forms the shoulder (34) and that both bores (32) are connected by a slot (33).
4. Spule nach Anspruch 2, dadurch gekennzeichnet, daß die Klammer (25) aus Federblech hergestellt ist und zwei die Leisten bildenden Haken (28) aufweist und daß eine Nut (22) in mindestens einer Schnittkantenseiten (20 oder 21) beider Teile (10, 11) die Schulter (24) bildet.4. Coil according to claim 2, characterized in that the clip (25) is made of spring sheet metal and has two hooks (28) forming the strips and that a groove (22) in at least one cutting edge side (20 or 21) of both parts (10 , 11) forms the shoulder (24).
5. Spule nach Anspruch 4, dadurch gekennzeichnet, daß jede Schulter (24) einen Hinterschnitt aufweist.5. Coil according to claim 4, characterized in that each shoulder (24) has an undercut.
6. Spule nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die ge¬ genseitige Befestigung beider Teile (10, 11) durch zwei einander zu¬ gewandte Klammern (25) aus Federblech erfolgt.6. Coil according to claim 4 or 5, characterized in that the mutual fastening of both parts (10, 11) is carried out by two mutually facing brackets (25) made of spring steel.
7. Spule nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Leisten (28, 48) in Einschubrichtung (29) der Klammer (25, 45) in die Teile (10, 11; 30, 31) zueinander divergent (auseinander laufend) sind. 7. Coil according to one of claims 2 to 6, characterized in that the strips (28, 48) in the insertion direction (29) of the bracket (25, 45) in the parts (10, 11; 30, 31) divergent to each other (apart ongoing).
EP19870902407 1986-05-07 1987-04-24 Ignition coil for ignition apparatus of internal combustion engines Withdrawn EP0265463A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3615529 1986-05-07
DE19863615529 DE3615529A1 (en) 1986-05-07 1986-05-07 IGNITION COIL FOR IGNITION SYSTEMS FOR INTERNAL COMBUSTION ENGINES

Publications (1)

Publication Number Publication Date
EP0265463A1 true EP0265463A1 (en) 1988-05-04

Family

ID=6300385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870902407 Withdrawn EP0265463A1 (en) 1986-05-07 1987-04-24 Ignition coil for ignition apparatus of internal combustion engines

Country Status (4)

Country Link
EP (1) EP0265463A1 (en)
AU (1) AU7306487A (en)
DE (1) DE3615529A1 (en)
WO (1) WO1987007073A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4101561C1 (en) * 1991-01-21 1992-03-12 Gkn Cardantec International Gesellschaft Fuer Antriebstechnik Mbh, 4300 Essen, De
JP2003077722A (en) * 2001-08-31 2003-03-14 Mitsubishi Electric Corp Method for forming laminated core and electromagnetic type valve drive
DE102013216585A1 (en) * 2013-08-21 2015-02-26 Mdexx Gmbh Throttle and transformer angle profile and method for its production
KR102045894B1 (en) 2015-04-23 2019-12-02 엘에스산전 주식회사 Transformer core and stacking method therefor

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GB885174A (en) * 1959-05-11 1961-12-20 Gen Electric Co Ltd Improvements in and relating to laminated electromagnetic cores
FR1457095A (en) * 1965-12-03 1966-07-08 Universal assembly system
US3484562A (en) * 1966-09-21 1969-12-16 Nortronics Co Magnetic transducer with clamped body sections to hold core pieces
DE1613778A1 (en) * 1968-01-31 1971-04-22 Blum Eisen & Metallind Two-part iron core, especially for transformers
DE2012583A1 (en) * 1970-03-17 1971-09-30 Siemens Ag Iron core for transformers or reactors
FR2173689B1 (en) * 1972-02-28 1975-06-13 Cetek Const Electrotech
FR2339943A1 (en) * 1976-01-28 1977-08-26 Sev Marchal Connector for two magnetic circuit parts - has 2 ribs of nonmagnetic material with cylindrical surfaces held apart by connecting strip leaving air gap(s)
FR2425010A1 (en) * 1978-05-02 1979-11-30 Foucault Henri De Furniture component assembly connector - has two pins joined by strip to fit in mating recess
GB2076103B (en) * 1980-05-01 1984-11-21 Eltherington Stanley James Connections between concrete members
FR2494026A2 (en) * 1980-11-12 1982-05-14 Marchal Equip Auto Air gaps setting method for automobile induction coil cores - uses non-magnetic spacer with pairs of orthogonal flanges to fully interlock yoke and U-core

Non-Patent Citations (1)

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Title
See references of WO8707073A1 *

Also Published As

Publication number Publication date
WO1987007073A1 (en) 1987-11-19
AU7306487A (en) 1987-12-01
DE3615529A1 (en) 1987-11-12

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