EP0588804A1 - Spulenkern mit massekontaktierung. - Google Patents
Spulenkern mit massekontaktierung.Info
- Publication number
- EP0588804A1 EP0588804A1 EP92908833A EP92908833A EP0588804A1 EP 0588804 A1 EP0588804 A1 EP 0588804A1 EP 92908833 A EP92908833 A EP 92908833A EP 92908833 A EP92908833 A EP 92908833A EP 0588804 A1 EP0588804 A1 EP 0588804A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet metal
- screw
- coil core
- contact
- core package
- 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
Links
- 241000446313 Lamella Species 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002966 varnish Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P3/00—Other installations
- F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
-
- 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
- the invention is based on a coil with an iron core, in particular an ignition coil consisting of a primary and secondary winding, which are inductively coupled by an iron core.
- Such an iron core usually consists of a large number of • individual thin sheet metal lamellae, which are punched out, isolated by painting and then stacked together to form a core package.
- the individual sheet metal lamellae are riveted or welded together, for example, so that the sheet metal lamellae are electrically connected to one another.
- These core packages are electrically connected to ground potential, which was previously done when the core package was fastened to a holder with a screw and tooth lock washer.
- good contact with the ground is not always given in this process, for example due to inadequate removal of the insulating varnish.
- Another possibility is to press a metallic sleeve into recesses or holes in the core package.
- the core package is attached to a holder by screwing the sleeve and at the same time a conductive ground connection is made.
- This ground contact is relatively material-intensive and requires several work steps to manufacture. In the course of ever more cost-effective production, this method of ground contacting is not efficient enough.
- the arrangement according to the invention with the characterizing features of the main claim has the advantage that the mass contact • between the core package and holder is made directly via a screw or the like, so that a toothed washer or sleeve can be dispensed with. Another advantage is that the step of "pressing in the sleeve" is also saved.
- FIG. 1 shows the top view of a core package
- FIG. 2 shows the side view of the core package from FIG. 1 with the fastening screw shown
- FIG. 3 shows a top view of a second core package
- FIG. 4 shows the side view of the core package from FIG. 3 with the fastening screw.
- Figures 1 and 2 are to be explained together since they only show the same subject from different views.
- the core package 1 can be seen made of sheet metal lamella coated with insulating varnish with a bore 2, with all but the other one sheet metal lamella la having this diameter of the bores 2.
- At least one lamella la has a smaller diameter 3. It is completely irrelevant at which point in the core package this lamella la, with the smaller diameter 3, is arranged.
- the remaining sheet metal lamellae have a diameter of 2, this diameter being chosen so that a fastening screw 4 can easily be inserted into this bore 2 with play.
- the fastening screw 4 When screwed in, the fastening screw 4 acts like a thread cutter and thus cuts a "partial thread" on the material protrusion 5 into the protruding sheet metal lamella la, the insulating varnish being removed in this area of the sheet metal lamella la and at the same time making a ground contact with the screw 4. So there is no additional effort when screwing the core package to a holder ground contact.
- the smaller diameter 3 of a sheet metal lamella la is chosen so that the screw 4 can be screwed into it without damaging the thread.
- FIGS. 3 and 4 A further possibility of forming a sheet metal lamella is shown in FIGS. 3 and 4.
- the one sheet metal lamella 1b is punched with the same diameter as the rest of the core package 1, but with this one sheet metal lamella, a material residue in the form of a segment section according to FIG. 3 protruding into the bore 2 also remains here.
- This material protrusion 5 is selected so that the screw 4 removes the insulating varnish of the lamella 1 a there without damaging the thread and makes a ground contact with a “partial thread”.
- the other, differently shaped sheet metal lamella may have any other cross section of the opening, e.g. to choose a toothed lock washer. It is essential in all cases that the area of the machined material is smaller than that of the other lamellae, which are packed together to form the core package and the remaining opening is larger than the core cross section of the screw 4.
- a larger material protrusion 5 can also be selected in the bore 2 which, when the screw 4 is inserted, deviates in the screwing direction and then presses into the screw thread with its edge freed from the insulating varnish.
- a rivet or a similar connecting element can also be used.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bolts, Nuts, And Washers (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Electrophotography Configuration And Component (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4119413 | 1991-06-13 | ||
DE4119413A DE4119413C1 (de) | 1991-06-13 | 1991-06-13 | |
PCT/DE1992/000330 WO1992022744A1 (de) | 1991-06-13 | 1992-04-24 | Spulenkern mit massekontaktierung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0588804A1 true EP0588804A1 (de) | 1994-03-30 |
EP0588804B1 EP0588804B1 (de) | 1995-10-11 |
Family
ID=6433795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92908833A Expired - Lifetime EP0588804B1 (de) | 1991-06-13 | 1992-04-24 | Spulenkern mit massekontaktierung |
Country Status (7)
Country | Link |
---|---|
US (1) | US5398014A (de) |
EP (1) | EP0588804B1 (de) |
JP (1) | JPH06508240A (de) |
AU (1) | AU651449B2 (de) |
DE (2) | DE4119413C1 (de) |
ES (1) | ES2079189T3 (de) |
WO (1) | WO1992022744A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005028814A1 (de) * | 2005-06-22 | 2007-01-04 | Robert Bosch Gmbh | Zündspule für eine Brennkraftmaschine |
JP5277475B2 (ja) * | 2006-05-01 | 2013-08-28 | シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト | 減衰機能を備えたワンウェイクラッチ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1727219A (en) * | 1927-09-09 | 1929-09-03 | Joachim B Scharf | Battery terminal clamp |
FR673231A (fr) * | 1928-04-06 | 1930-01-13 | Thomson Houston Comp Francaise | Perfectionnements aux systèmes de fabrication des noyaux magnétiques pour appareils électriques |
US2135937A (en) * | 1937-03-25 | 1938-11-08 | George B Gordon | Coupling for wires or electrical conductors |
FR2321054A1 (fr) * | 1975-08-14 | 1977-03-11 | Sev Marchal | Bobine d'allumage |
JPS5450733A (en) * | 1977-09-30 | 1979-04-20 | Hitachi Ltd | Ignitor for internal combustion engine |
IT1101065B (it) * | 1978-11-13 | 1985-09-28 | Magneti Marelli Spa | Bobina d'accensione per autoveicoli |
DE3528803A1 (de) * | 1985-08-10 | 1987-02-12 | Bosch Gmbh Robert | Zuendspule fuer mehrkerzige, verteilerlose zuendanlagen von brennkraftmaschinen, insbesondere fuer kraftfahrzeuge |
FR2652195B1 (fr) * | 1989-09-15 | 1992-01-31 | Valeo Electronique | Bobine d'allumage, en particulier pour moteur a combustion interne de vehicule automobile. |
-
1991
- 1991-06-13 DE DE4119413A patent/DE4119413C1/de not_active Expired - Lifetime
-
1992
- 1992-04-24 US US08/162,069 patent/US5398014A/en not_active Expired - Fee Related
- 1992-04-24 JP JP4507960A patent/JPH06508240A/ja active Pending
- 1992-04-24 WO PCT/DE1992/000330 patent/WO1992022744A1/de active IP Right Grant
- 1992-04-24 AU AU15740/92A patent/AU651449B2/en not_active Ceased
- 1992-04-24 ES ES92908833T patent/ES2079189T3/es not_active Expired - Lifetime
- 1992-04-24 EP EP92908833A patent/EP0588804B1/de not_active Expired - Lifetime
- 1992-04-24 DE DE59204007T patent/DE59204007D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9222744A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4119413C1 (de) | 1992-09-17 |
WO1992022744A1 (de) | 1992-12-23 |
EP0588804B1 (de) | 1995-10-11 |
DE59204007D1 (de) | 1995-11-16 |
JPH06508240A (ja) | 1994-09-14 |
ES2079189T3 (es) | 1996-01-01 |
AU1574092A (en) | 1993-01-12 |
US5398014A (en) | 1995-03-14 |
AU651449B2 (en) | 1994-07-21 |
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