CN102741951B - Ignition coil - Google Patents
Ignition coil Download PDFInfo
- Publication number
- CN102741951B CN102741951B CN201180009032.2A CN201180009032A CN102741951B CN 102741951 B CN102741951 B CN 102741951B CN 201180009032 A CN201180009032 A CN 201180009032A CN 102741951 B CN102741951 B CN 102741951B
- Authority
- CN
- China
- Prior art keywords
- contact
- voltage
- ignition coil
- housing
- voltage contact
- 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.)
- Active
Links
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000005530 etching Methods 0.000 claims description 3
- 238000009832 plasma treatment Methods 0.000 claims description 2
- 230000002349 favourable effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- 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
-
- 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
- H01F27/02—Casings
- H01F27/022—Encapsulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Known a kind of ignition coil with housing is provided with coil case in described housing, and described coil case has the high-voltage output end contacting with high-voltage contact, and wherein said housing utilizes mould material to fill. Electrically contacting by contact spring between high-voltage output end and high-voltage contact realizes, and described contact spring is pressed onto on described high-voltage contact with elastic force. Contact spring is arranged in mould material as coil case. Shortcoming is, because housing has the thermal coefficient of expansion that is different from mould material, so the housing of high-voltage contact and ignition coil is mechanically coupled, and contact spring and mould material are mechanically coupled. Thus when high-voltage contact together with housing due to thermal expansion when being arranged in the contact spring of mould material and removing, the high-voltage output end that may appear at described coil case and the disconnection that contacts of leading between the high-voltage contact of spark plug. Described contact disconnects and in the time that ignition coil is worked, causes so-called serial connection gap, because described serial connection gap erodes the material on high-voltage contact, and forms electromagnetic interference, and reduces spark energy. In ignition coil according to the present invention, prevent that contact from disconnecting. According to the present invention's regulation, high-voltage contact (15) is so constructed, and makes to form to be connected with the form fit of mould material (7).
Description
Technical field
The present invention relates to a kind of according to the ignition coil of type described in independent claims.
Background technology
By the known a kind of ignition coil with housing of JP2009027064A, in described housing, be provided with coil case, described coil case has high-voltage output end, and described high-voltage output end contacts with high-voltage contact, and wherein said housing utilizes mould material to fill. Electrically contacting by contact spring between high-voltage output end and high-voltage contact realizes, and described contact spring is pressed onto on high-voltage contact with elastic force. Contact spring is arranged in mould material as coil case. Shortcoming is, because housing has the thermal coefficient of expansion that is different from mould material, so the housing of high-voltage contact and ignition coil is mechanically coupled, and described contact spring and mould material are mechanically coupled. Thus, when high-voltage contact together with housing due to thermal expansion when being arranged in the contact spring of mould material and removing, the high-voltage output end that may appear at described coil case and the disconnection that contacts of leading between the high-voltage contact of spark plug. Described contact disconnects and in the time that ignition coil is worked, causes so-called serial connection gap (Vorfunkenstrecken), because described serial connection gap erodes the material on high-voltage contact, and forms electromagnetic interference and reduces spark energy.
Summary of the invention
On the other hand, be according to advantage of the present invention, that there is the ignition coil of independent power requirement feature, prevent in the high-voltage output end of coil case and the disconnection that contacts of leading between the high-voltage contact of spark plug, and therefore realize contact reliably by following manner: described high-voltage contact is so constructed, formation is connected with the form fit of mould material. In this way, high-voltage contact utilizes mould material to promote in hot mode together with contact spring. Between contact spring and high-voltage contact, no longer there is thus relative motion.
Can realize favourable improvement project and the prioritization scheme of the ignition coil providing in independent power requires by described in the dependent claims measure.
Following situation is particularly advantageous: form fit connects and realizes by least one undercut portions on high-voltage contact, connects because can obtain in this way enough good form fit, and this form fit connects and can not form contact and disconnect. According to a kind of favourable embodiment, the undercut portions of high-voltage contact is groove, otch, protuberance, convex shoulder or projection.
In addition following situation is favourable: high-voltage contact has the surface being polished, and is also reinforced by this way because form fit connects. The polishing on surface for example can realize by sandblast, etching or plasma treatment (Plasmieren).
Following situation is very favorable: high-voltage output end comprises the contact element being electrically connected with high-voltage contact. Contact element is electrically connected with the secondary coil of coil case, and this contact element for example can be designed to contact spring.
In addition following situation is favourable: the part that high-voltage contact is Connection Element, this Connection Element can be electrically connected with spark plug by helical spring, described Connection Element is arranged in the output channel of housing, and seal described output channel, because prevented that by this way mould material from overflowing through output channel from housing.
Brief description of the drawings
Embodiments of the invention illustrate simplifiedly in the accompanying drawings and are described in detail in description subsequently.
Detailed description of the invention
Accompanying drawing shows according to ignition coil of the present invention with sectional view.
Described ignition coil has the primary coil body 2 and the secondary wire circle body 4 that holds secondary coil 3 with primary coil 1. Described two coil cases, 2,4 parts around iron core 5, described iron core is formed by one group of stacked sheet metal, for example silicon steel sheet. Coil case 2,4 and the iron core with its coil 1,3 are arranged in housing 6, and mould material 7, for example casting resin of described housing utilization sclerosis are filled.
Primary coil 1 is connected with power supply 9 by connecting wire 8. In secondary coil 3, induce high voltage by primary coil 1, described high voltage is directed to spark plug 10 places by electrical connection section.
Secondary wire circle body 4 has high-voltage output end 13, and described high-voltage output end contacts with high-voltage contact 15 by contact element 14, for example contact spring. Contact spring 14 is applied on high-voltage contact 15 with elastic force before filling with mould material 7, and is for example designed to the spring foil metal of bar shaped. High-voltage output end 13 is electrically connected with the secondary coil 3 of secondary wire circle body 4. High-voltage contact 15 continues conduct high voltage towards spark plug 10, and described high-voltage contact is for example made up of aluminium, zine pressure casting, brass or other conductive material.
In order to prevent the disconnection that contacts between the high-voltage output end 13 of secondary wire circle body 4 and high-voltage contact 15, according to setting of the present invention, high-voltage contact 15 is so constructed, and makes to form to be connected with the form fit of mould material 7. Be connected and guaranteed with the form fit of mould material 7 by high-voltage contact 15: high-voltage contact 15, and does not move relative to each other because thermal expansion is together pushed with the contact spring 14 being surrounded by mould material 7. According to this embodiment, described form fit connection realizes by least one undercut portions 16 on high-voltage contact 13. The undercut portions 16 of high-voltage contact 15 can be groove, otch, protuberance, convex shoulder or projection. According to this embodiment, undercut portions 16 is projections, and this projection is radially given prominence to about the extending longitudinally of high-voltage contact 15 with respect to all the other high-voltage contacts 15. Described form fit connects and can also additionally strengthen by following manner: the surface of high-voltage contact 15 is polished as 10 height of Rz(nao-and micro relief at least)=average roughness depth surperficial peak valley the height in other words of 4 microns. This can realize by sandblast, etching or plasma resonance.
High-voltage contact 13 is for example connected with Connection Element 20, and described Connection Element is arranged in the output channel 17 of housing 6, and described Connection Element is so sealed shut output channel, and first liquid mould material 7 can not overflowed by output channel 17. If the Connection Element 20 that output channel 17 because the thermal expansion of housing 6 is stretched, has high-voltage contact 15 downwards prevents that it from following and moves by being connected with the form fit of mould material 7. Connection Element 20 is for example configured to sleeve shaped, to arrange therein electronic component, for example diode or resistance for suppressing spark. If do not need this electronic component, Connection Element 20 is just configured to cylindricality or bolt shape. In order to touch spark plug 10, helical spring 21 can be connected on Connection Element 20.
Claims (10)
1. there is the ignition coil of housing (6), in described housing, be provided with coil case (4), described coil case has the high-voltage output end (13) contacting with high-voltage contact (15), wherein, described high-voltage output end (13) comprises contact element (14), described contact element is electrically connected with described high-voltage contact (15), wherein, described housing (6) utilizes mould material (7) to fill, it is characterized in that, described high-voltage contact (15) is so constructed, make to form and be connected with the form fit of described mould material (7), between contact element (14) and high-voltage contact (15), no longer there is relative motion thus.
2. by ignition coil claimed in claim 1, it is characterized in that, described form fit connection realizes by the undercut portions (16) on described high-voltage contact (15).
3. by ignition coil claimed in claim 2, it is characterized in that, the undercut portions (16) of described high-voltage contact (15) is groove, otch or protuberance.
4. by ignition coil claimed in claim 1, it is characterized in that, described high-voltage contact (15) has the surface being polished.
5. by ignition coil claimed in claim 1, it is characterized in that, described high-voltage contact (15) is by sandblast, etching or plasma treatment.
6. by ignition coil claimed in claim 1, it is characterized in that, described contact element (14) is contact spring or contact chip.
7. by ignition coil claimed in claim 1, it is characterized in that, described high-voltage output end (13) is electrically connected with the secondary coil (3) of described coil case (4).
8. by ignition coil claimed in claim 1, it is characterized in that, described high-voltage contact (15) is a part for Connection Element (20), and described Connection Element can pass through helical spring (21) and be electrically connected with spark plug (10).
9. by ignition coil claimed in claim 8, it is characterized in that, described Connection Element (20) is arranged in the output channel (17) of described housing (6), and seals described output channel.
10. by ignition coil claimed in claim 2, it is characterized in that, the undercut portions (16) of described high-voltage contact (15) is convex shoulder or projection.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010001814A DE102010001814A1 (en) | 2010-02-11 | 2010-02-11 | ignition coil |
| DE102010001814.7 | 2010-02-11 | ||
| PCT/EP2011/050729 WO2011098329A1 (en) | 2010-02-11 | 2011-01-20 | Ignition coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102741951A CN102741951A (en) | 2012-10-17 |
| CN102741951B true CN102741951B (en) | 2016-05-18 |
Family
ID=43920764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180009032.2A Active CN102741951B (en) | 2010-02-11 | 2011-01-20 | Ignition coil |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN102741951B (en) |
| BR (1) | BR112012020090B1 (en) |
| DE (1) | DE102010001814A1 (en) |
| WO (1) | WO2011098329A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9796165B2 (en) | 2013-12-18 | 2017-10-24 | Delphi Technologies, Inc. | Ignition coil and method of assembly |
| DE102014210142A1 (en) * | 2014-05-27 | 2015-12-03 | Volkswagen Aktiengesellschaft | Ignition coil with a Duroplastkunststoff coil housing and / or an injected in a thermoset plastic ignition electronics |
| DE102014010585A1 (en) * | 2014-07-17 | 2016-01-21 | Diehl Metall Stiftung & Co. Kg | Brass component and use of the component |
| DE102016113451B3 (en) * | 2016-07-21 | 2017-09-14 | Borgwarner Ludwigsburg Gmbh | ignition coil |
| DE102017116277B4 (en) * | 2016-07-21 | 2023-06-22 | Borgwarner Ludwigsburg Gmbh | Ignition coil and method of making an ignition coil |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0445557A1 (en) * | 1990-03-08 | 1991-09-11 | Nippondenso Co., Ltd. | Ignition coil for internal combustion engine |
| US5550704A (en) * | 1994-02-25 | 1996-08-27 | Mitsubishi Denki Kabushiki Kaisha | Ignition coil including inorganic insulator exhibiting higher conductivity along its surface than perpendicular to its surface |
| DE19523900C1 (en) * | 1995-06-30 | 1997-01-16 | Bosch Gmbh Robert | Process for the pretreatment of a plastic surface to be glued |
| JP2009027064A (en) * | 2007-07-23 | 2009-02-05 | Hanshin Electric Co Ltd | Ignition coil for internal combustion engine |
| CN101490771A (en) * | 2006-05-30 | 2009-07-22 | 罗伯特.博世有限公司 | Ignition coil |
| CN101517662A (en) * | 2006-09-26 | 2009-08-26 | 罗伯特·博世有限公司 | Ignition coil, in particular for an internal combustion engine of a motor vehicle |
-
2010
- 2010-02-11 DE DE102010001814A patent/DE102010001814A1/en active Pending
-
2011
- 2011-01-20 CN CN201180009032.2A patent/CN102741951B/en active Active
- 2011-01-20 WO PCT/EP2011/050729 patent/WO2011098329A1/en active Application Filing
- 2011-01-20 BR BR112012020090A patent/BR112012020090B1/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0445557A1 (en) * | 1990-03-08 | 1991-09-11 | Nippondenso Co., Ltd. | Ignition coil for internal combustion engine |
| US5550704A (en) * | 1994-02-25 | 1996-08-27 | Mitsubishi Denki Kabushiki Kaisha | Ignition coil including inorganic insulator exhibiting higher conductivity along its surface than perpendicular to its surface |
| DE19523900C1 (en) * | 1995-06-30 | 1997-01-16 | Bosch Gmbh Robert | Process for the pretreatment of a plastic surface to be glued |
| CN101490771A (en) * | 2006-05-30 | 2009-07-22 | 罗伯特.博世有限公司 | Ignition coil |
| CN101517662A (en) * | 2006-09-26 | 2009-08-26 | 罗伯特·博世有限公司 | Ignition coil, in particular for an internal combustion engine of a motor vehicle |
| JP2009027064A (en) * | 2007-07-23 | 2009-02-05 | Hanshin Electric Co Ltd | Ignition coil for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011098329A1 (en) | 2011-08-18 |
| CN102741951A (en) | 2012-10-17 |
| DE102010001814A1 (en) | 2011-08-11 |
| BR112012020090B1 (en) | 2020-02-04 |
| BR112012020090A2 (en) | 2016-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |