EP0516773A1 - Process and device for manufacturing coils. - Google Patents
Process and device for manufacturing coils.Info
- Publication number
- EP0516773A1 EP0516773A1 EP91920318A EP91920318A EP0516773A1 EP 0516773 A1 EP0516773 A1 EP 0516773A1 EP 91920318 A EP91920318 A EP 91920318A EP 91920318 A EP91920318 A EP 91920318A EP 0516773 A1 EP0516773 A1 EP 0516773A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- primary winding
- winding
- iron core
- mandrel
- primary
- 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
Classifications
-
- 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
-
- 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
Definitions
- the invention is based on a method for producing coils, in particular ignition coils according to the preamble of claim 1.
- a winding body is used for their primary winding and secondary winding.
- the heat generated in its windings during operation must be effectively dissipated. This applies in particular to the primary winding covered by the secondary winding, the maximum operating temperature of which ultimately limits the performance of the ignition coil.
- the inventive method for producing coils according to the characterizing features of claim 1 has the advantage that the primary winding of the ignition coil can be created without a winding body and the heat transfer from the primary winding to the immediately adjacent iron core can be particularly effective. This makes it possible to achieve an increased power yield in the case of such an ignition coil with a predetermined outer diameter, a structure which is conventional compared to an ignition coil.
- FIG. 1 a partial section through a winding machine 11 is shown in a schematic representation in FIG. 1, with a drive element 12 which is cylindrical in the basic form, and an axially aligned shaft-shaped mandrel 13 which is offset from the drive element 12.
- the mandrel 13 has flange-like boundaries at both ends as a collar 14 and stop 16, which limit the winding area for a primary winding 17 to be wound on the mandrel for an indicated ignition coil 18 and which have an at least the same diameter as the outer diameter of the primary winding 17 .
- the collar 14 is part of a connector plug 21 which is pushed over the mandrel 13 before the primary winding 17 is wound and is mounted in a rotationally fixed manner in an axial groove 22 provided in the drive member 12.
- the stop 16 is reversibly attached to the free end of the mandrel 13 by means not shown.
- the primary winding 17 is wound onto the mandrel 13 between the collar 14 and the stop 16 in the form of a layer winding and the beginning of the primary coil 17, as in FIG 1, the beginning of the primary coil 17 is connected to a first connection element 23 and the end of the primary coil 17 is connected to a second connection element 24 by welding, whereby other connection techniques, such as soldering or clamping, can also be used.
- connection elements 23, 24 are electrically insulated from one another in the usual way.
- a secondary winding 26 is manufactured and mounted coaxially to the primary winding 17, as shown in FIG. 2.
- the hollow cylindrical bobbin 27 carrying the secondary winding 26 is divided into a plurality of chambers 29 by radially directed webs 28 pointing away from the mandrel 13.
- the beginning of the secondary winding 26 is connected to the second connection element 24.
- the stop 16 is removed and an iron core 31 is struck axially on the now free end of the mandrel 13, as shown in FIG. 3.
- the iron core 31 is overmolded in an electrically insulating, skin-like manner and the overmolded iron core 31 has the same, preferably square or rectangular, cross-sectional shape as the mandrel 13.
- the overmolded iron core 31 and the mandrel 13 have the same external dimensions; the outer dimensions of the overmolded iron core 31 could, however, also be one game less than the outer dimensions of the mandrel 13.
- the association 33 consisting of the primary winding 17, the secondary winding 26 and the connector 21 is pushed in the axial direction of the mandrel 13 over its free end onto a part of the iron core 31, whereby the iron core assumes the supporting effect for the primary winding 17.
- the iron core 31 is fixed in a pot-shaped housing 34, the open cover side 36 of which faces the drive element 12 and the lateral surface 37 of which is directed parallel to the mandrel 13, so that when the dressing 33 is pushed onto the iron core, it dips into the housing 34 as far as possible, that only a part of the connector plug 21 projects beyond it.
- the secondary winding 26 is connected at its end to a high-voltage connection 38 which penetrates the housing 34 on its bottom side 39.
- the connection is made using a conductive adhesive 41; however, it could also be different, for example stuck.
- the iron core 31 is supplemented by a transverse yoke 42 and the cover side 36 of the housing 34 is closed in such a way that the part of the connector plug 21 which projects beyond the housing 34 is sealed off from an interior 43 which is now enclosed by the housing 34.
- the housing 34 which is closed on all sides, is dried on the inside by means not shown and poured out with casting resin, which forms a plastic block around the dressing 33 and stabilizes its arrangement.
- the mandrel 13 and the iron core 31 can alternatively have a different cross-sectional area, for example with a round cross-sectional area, from the exemplary embodiment described above.
- the manufactured ignition coil 18 With the method described, it is possible in the manufactured ignition coil 18 to save the winding body for the primary winding 17, while maintaining the winding body 27 required for the secondary winding 26 because of the required high voltage flashover resistance, the heat loss of the primary winding 17 by means of the iron core 31 lying directly on the primary winding 17 derive quickly and so to create an ignition coil 18, one compared to an ignition coil with a conventional structure with a winding body for the primary winding 17 and the secondary winding 26, based on the volume of the ignition coil 18, increased
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Dans une bobine d'allumage (18), il y a lieu d'améliorer la dissipation de la chaleur provenant des pertes thermiques produites en cours de service. Par rapport à une bobine d'allumage de construction conventionnelle, comportant un corps d'enroulement (27) respectivement pour l'enroulement primaire (17) et pour l'enroulement secondaire (26), on économise, grâce à un procédé de fabrication modifié, le corps d'enroulement de l'enroulement primaire (17). A cet effet, l'enroulement primaire (17) est enroulé sur un mandrin de bobinage (13), amené en contact avec une pièce de raccordement (21) et entouré d'un enroulement secondaire (26) appliqué sur le corps d'enroulement (27). La pièce de raccordement (21), l'enroulement primaire (17) et l'enroulement secondaire (26) forment un assemblage (33). Cet assemblage (33) est transféré, par translation longitudinale, sur un noyau en fer doux (31) qui est fixé sur le mandrin (13) suivant un même axe que celui-ci et présentant la même section que ledit mandrin (13), de telle façon que le noyau en fer doux (31) assure à la fois le maintien de l'enroulement primaire (17) et la dissipation immédiate de la chaleur provenant des pertes thermiques de l'enroulement primaire (17).In an ignition coil (18), it is necessary to improve the dissipation of the heat coming from the thermal losses produced during service. Compared to a ignition coil of conventional construction, comprising a winding body (27) respectively for the primary winding (17) and for the secondary winding (26), savings are made, thanks to a modified manufacturing process. , the winding body of the primary winding (17). To this end, the primary winding (17) is wound on a winding mandrel (13), brought into contact with a connecting piece (21) and surrounded by a secondary winding (26) applied to the winding body. (27). The connecting piece (21), the primary winding (17) and the secondary winding (26) form an assembly (33). This assembly (33) is transferred, by longitudinal translation, to a soft iron core (31) which is fixed on the mandrel (13) along the same axis as the latter and having the same section as said mandrel (13), in such a way that the soft iron core (31) ensures both the maintenance of the primary winding (17) and the immediate dissipation of the heat coming from the thermal losses of the primary winding (17).
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4040604A DE4040604A1 (en) | 1990-12-19 | 1990-12-19 | METHOD AND DEVICE FOR PRODUCING COILS |
DE4040604 | 1990-12-19 | ||
PCT/DE1991/000906 WO1992011648A1 (en) | 1990-12-19 | 1991-11-19 | Process and device for manufacturing coils |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0516773A1 true EP0516773A1 (en) | 1992-12-09 |
EP0516773B1 EP0516773B1 (en) | 1995-05-24 |
Family
ID=6420698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91920318A Expired - Lifetime EP0516773B1 (en) | 1990-12-19 | 1991-11-19 | Process for manufacturing coils |
Country Status (7)
Country | Link |
---|---|
US (1) | US5343614A (en) |
EP (1) | EP0516773B1 (en) |
JP (1) | JPH05504870A (en) |
KR (1) | KR920704322A (en) |
DE (2) | DE4040604A1 (en) |
ES (1) | ES2073780T3 (en) |
WO (1) | WO1992011648A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1043738A1 (en) * | 1999-04-08 | 2000-10-11 | Thomson Television Components France | High-voltage transformer |
US6264183B1 (en) * | 1999-08-19 | 2001-07-24 | Precision Products Group | Methods of manufacturing coils and apparatus for same |
DE102006037169A1 (en) * | 2006-08-09 | 2008-02-14 | Robert Bosch Gmbh | Method for producing a coil, in particular an ignition coil for a motor vehicle |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2856639A (en) * | 1953-04-13 | 1958-10-21 | Bernard F Forrest | Method of encasing electric coils |
US3458928A (en) * | 1966-02-23 | 1969-08-05 | Caterpillar Tractor Co | Method for forming rotor constrained electrical coils |
US3443136A (en) * | 1967-03-28 | 1969-05-06 | Gen Electric | Single field coil motor stator and method of making the same |
DE7141337U (en) * | 1971-11-02 | 1972-04-06 | Licentia | Electrical device for temperature control with a housing for surface mounting |
DE2554747A1 (en) * | 1975-12-05 | 1977-06-16 | Bosch Gmbh Robert | ELECTRONIC CONTROL UNIT |
US4179796A (en) * | 1978-03-13 | 1979-12-25 | Varo Semiconductor, Inc. | Method of making a transformer with an improved insulation system |
DE3301224A1 (en) * | 1982-11-26 | 1984-05-30 | Robert Bosch Gmbh, 7000 Stuttgart | IGNITION COIL FOR IGNITION SYSTEMS FOR INTERNAL COMBUSTION ENGINES |
DE3311775C1 (en) * | 1983-03-31 | 1984-06-20 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Electron beam deflection transformer |
JPS59208800A (en) * | 1983-05-12 | 1984-11-27 | 株式会社日立製作所 | Electronic device for vehicle |
JPS60177602A (en) * | 1984-02-24 | 1985-09-11 | Hitachi Ltd | Manufacture of superconductive coil |
DE3433065A1 (en) * | 1984-09-08 | 1986-03-20 | Robert Bosch Gmbh, 7000 Stuttgart | IGNITION COIL DETERMINED FOR THE IGNITION SYSTEM OF AN INTERNAL COMBUSTION ENGINE |
ES2039760T3 (en) * | 1988-08-03 | 1993-10-01 | Mannesmann Kienzle Gmbh (Hr B1220) | BOX FOR AN ELECTRONIC DEVICE. |
-
1990
- 1990-12-19 DE DE4040604A patent/DE4040604A1/en not_active Withdrawn
-
1991
- 1991-11-19 US US07/920,301 patent/US5343614A/en not_active Expired - Fee Related
- 1991-11-19 EP EP91920318A patent/EP0516773B1/en not_active Expired - Lifetime
- 1991-11-19 ES ES91920318T patent/ES2073780T3/en not_active Expired - Lifetime
- 1991-11-19 JP JP4500013A patent/JPH05504870A/en active Pending
- 1991-11-19 DE DE59105594T patent/DE59105594D1/en not_active Expired - Fee Related
- 1991-11-19 WO PCT/DE1991/000906 patent/WO1992011648A1/en active IP Right Grant
- 1991-11-19 KR KR1019920701984A patent/KR920704322A/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9211648A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4040604A1 (en) | 1992-06-25 |
DE59105594D1 (en) | 1995-06-29 |
ES2073780T3 (en) | 1995-08-16 |
EP0516773B1 (en) | 1995-05-24 |
US5343614A (en) | 1994-09-06 |
WO1992011648A1 (en) | 1992-07-09 |
KR920704322A (en) | 1992-12-19 |
JPH05504870A (en) | 1993-07-22 |
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