CN102592811B - Powdered-alloy tapped ignition coil and manufacture method thereof - Google Patents
Powdered-alloy tapped ignition coil and manufacture method thereof Download PDFInfo
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- CN102592811B CN102592811B CN201210028728.6A CN201210028728A CN102592811B CN 102592811 B CN102592811 B CN 102592811B CN 201210028728 A CN201210028728 A CN 201210028728A CN 102592811 B CN102592811 B CN 102592811B
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Abstract
The invention relates to a powdered-alloy tapped ignition coil and a manufacture method of the ignition coil. The powdered-alloy tapped ignition coil comprises a large casing, a coil assembly and an ignition module mounted in the large casing, wherein the coil assembly includes a primary winding, a secondary winding sheathed on the outer side of the primary coil, and a small casing sheathed on the outer side of the primary winding and the secondary winding; the space between the small casing and the primary winding as well as the secondary winding is filled with epoxy resin (A); both ends of a magnetic core are respectively connected with a magnetic sheet covered with a magnetic sheet cover after passing through the inside the primary winding; the space between the coil assembly and the large casing is filled with epoxy resin (B); and the hardness of epoxy resin (B) is smaller than that of epoxy resin (A). The powdered-alloy tapped ignition coil provided by the invention solves the problems existing in the prior art, and has long service life.
Description
Technical field
The present invention relates to the assembling mode of loading coil inside of magnetic core that a kind of powder metallurgy packet type ignition coil in automobile engine and powder metallurgy manufacture, magnetic sheet.
Background technology
In automotive engine ignition system, ignition coil a kind ofly provides the execution unit of ignition energy for the air in ignition engine cylinder and fuel oil mixture.It is a kind of special burst stepup transformer based on electromagnetic induction principle, and the voltage that the low-voltage of 8-16V makes it secondary generation 20-40KV by setpoint frequency break-make is produced electric spark by spark plug by it.
Shown in accompanying drawing 1 to accompanying drawing 4, powder metallurgy packet type ignition coil of the prior art comprises large housing, be installed on coil assembly in large housing and ignition module, coil assembly comprises primary coil, is sheathed on the secondary coil of primary coil outside, through primary coil inside magnetic core, be connected to magnetic core two ends magnetic sheet and be wrapped in and peripheral lead insulator, adopt the disposable embedding of ordinary epoxy resin after coil assembly and ignition module are loaded large housing successively.The output voltage of powder metallurgy packet type ignition coil can reach leading portion output voltage, but due to the use of magnetic core, magnetic sheet, the impact larger on the life-span tool of the product design of ignition coil, assembly technology and product.Along with the raising of the aspect such as development and resource utilization of modern industry, because magnetic core, magnetic sheet belong to metal species, the epoxy resin (being defined as epoxy resin A: hard and crisp, poor with stress buffer effect to the point discharge of metal after solidification) generally used when itself and modern technologies directly contacts and its shortcoming can be caused as follows:
1. magnetic core, magnetic sheet directly contact with epoxy resin A, because the point discharge of metal and the reason of stress can cause epoxy resin to ftracture.
2. epoxy resin cracking, seal failure, causes the puncturing of product, the phenomenon such as creepage, makes the life of product time short, the problem such as even to scrap.
Summary of the invention
In order to overcome above-mentioned shortcoming, the object of this invention is to provide longer powder metallurgy packet type ignition coil and manufacture method thereof in a kind of product useful life.
According to an aspect of the present invention, the invention provides a kind of powder metallurgy packet type ignition coil, it comprises large housing, be installed on the coil assembly in described large housing and ignition module, described coil assembly comprises primary coil, be sheathed on the secondary coil of described primary coil outside, be sheathed on the small shell of described primary coil and secondary coil outside, described small shell and described primary coil, epoxy resin A is filled with between secondary coil, magnetic core is connected to through two ends behind described primary coil inside the magnetic sheet that surface coverage has magnetic sheet cover, epoxy resin B is filled with between described coil assembly and described large housing, the hardness of described epoxy resin B is less than the hardness of described epoxy resin A.
As further improvement, the surface of described small shell, described magnetic sheet cover is round and smooth shape.
As further improvement, described small shell, described magnetic sheet cover are made by plastic material.
According to another aspect of the present invention, provide a kind of manufacture method of powder metallurgy packet type ignition coil, comprise the steps:
A) by primary coil with after secondary coil successively nested loading small shell, reliable with epoxy resin A embedding sealing;
B) magnetic sheet is loaded in magnetic sheet cover, then the magnetic core two ends be connected to through the primary coil inside of coil assembly are to form coil assembly;
C) after coil assembly, ignition module being loaded large housing successively, by epoxy resin B supplementary irrigation; Wherein, the hardness of described epoxy resin B is less than the hardness of described epoxy resin A.
As further improvement, the surface of described small shell, described magnetic sheet cover is round and smooth shape.
As further improvement, described small shell, described magnetic sheet cover are made by plastic material.
Owing to have employed technique scheme; the present invention is had the following advantages: the epoxy resin A 1, generally used by original magnetic core and magnetic sheet and modernization directly contacts; become and isolated by plastic cement small shell, prevent epoxy resin to ftracture, the life-span of product is improved greatly; 2, make product risks low, technique is easy to operation; 3, improve the life-span of product, reduce scrappage.
Accompanying drawing explanation
Accompanying drawing 1 is the stereo-resolution figure of the coil assembly of powder metallurgy packet type ignition coil in prior art;
Accompanying drawing 2 is the stereogram of the coil assembly of powder metallurgy packet type ignition coil in prior art;
Accompanying drawing 3 is the assembling shell figure of powder metallurgy packet type ignition coil in prior art;
Accompanying drawing 4 is the embedding figure of powder metallurgy packet type ignition coil in prior art;
Accompanying drawing 5 is the small shell installation diagram according to powder metallurgy packet type ignition coil of the present invention;
Accompanying drawing 6 is the small shell embedding figure according to powder metallurgy packet type ignition coil of the present invention;
Accompanying drawing 7 is the stereo-resolution figure of the coil assembly according to powder metallurgy packet type ignition coil of the present invention;
Accompanying drawing 8 is the stereogram of the coil assembly according to powder metallurgy packet type ignition coil of the present invention;
Accompanying drawing 9 is the assembling shell figure according to powder metallurgy packet type ignition coil of the present invention;
Accompanying drawing 10 is the embedding figure according to powder metallurgy packet type ignition coil of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
See accompanying drawing 5 to accompanying drawing 10, a kind of manufacture method of powder metallurgy packet type ignition coil, this kind of powder metallurgy packet type ignition coil comprises large housing 9, be installed on the coil assembly in large housing 9 and ignition module 8, coil assembly comprises primary coil 1, be sheathed on the secondary coil 2 of primary coil 1 outside, be sheathed on the small shell 7 of primary coil 1 and secondary coil 2 outside, small shell 7 and primary coil 1, epoxy resin A101 is filled with between secondary coil 2, after magnetic core 3 is inner through primary coil 1, two ends are connected to surface coverage magnetic sheet cover 61, the magnetic sheet 41 of 62, 42, epoxy resin B102 is filled with between coil assembly and large housing 9, the hardness of epoxy resin B102 is less than the hardness of epoxy resin A101.It comprises the steps:
A) see accompanying drawing 5 with shown in accompanying drawing 6, according to large housing, primary coil, magnetic core, magnetic sheet, design small shell, then design and develop magnetic sheet cover according to magnetic sheet, small shell and magnetic sheet cover surface more round and smooth better and make by plastic material; By primary coil 1 with after secondary coil 2 successively nested loading small shell 7, carry out first time embedding sealing with epoxy resin A101 reliable;
B) see accompanying drawing 7 with shown in accompanying drawing 8, with plastics magnetic sheet cover 61,62, magnetic sheet 41,42 is encased, then magnetic core 3 two ends be connected to through primary coil 1 inside of coil assembly are to form coil assembly; Need to propose, plastics magnetic sheet cover 61,62 at least will cover the one side of the magnetic sheet 41,42 of small shell 7;
C) see shown in accompanying drawing 9 and accompanying drawing 10, after coil assembly, ignition module 8 are loaded large housing 9 successively, by epoxy resin B102 supplementary irrigation; Wherein, the hardness of epoxy resin B102 is less than the hardness of epoxy resin A101, and epoxy resin B102 belongs to the epoxy resin of soft class, to the point discharge of metal and stress all by larger cushioning effect.
In sum, owing to have employed the buffer action of the dissimilar epoxy resin encapsulated of secondary and magnetic sheet cover, small shell, the present invention can avoid the series of problems of above-mentioned appearance, and the life-span, the utilization rate of raw materials that improve product are high.Above execution mode is only for illustrating technical conceive of the present invention and feature; its object is to allow person skilled in the art understand content of the present invention and to be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (6)
1. a powder metallurgy packet type ignition coil, it comprises large housing (9), be installed on the coil assembly in described large housing (9) and ignition module (8), it is characterized in that: described coil assembly comprises primary coil (1), be sheathed on the secondary coil (2) that described primary coil (1) is outside, be sheathed on the small shell (7) that described primary coil (1) is outside with secondary coil (2), described small shell (7) and described primary coil (1), epoxy resin A (101) is filled with between secondary coil (2), after magnetic core (3) is inner through described primary coil (1), two ends are connected to surface coverage magnetic sheet cover (61, 62) magnetic sheet (41, 42), epoxy resin B (102) is filled with between described coil assembly and described large housing (9), the hardness of described epoxy resin B (102) is less than the hardness of described epoxy resin A (101).
2. powder metallurgy packet type ignition coil according to claim 1, is characterized in that: the surface of described small shell (7), described magnetic sheet cover (61,62) is round and smooth shape.
3. powder metallurgy packet type ignition coil according to claim 1 and 2, is characterized in that: described small shell (7), described magnetic sheet cover (61,62) are made by plastic material.
4., for a manufacture method for powder metallurgy packet type ignition coil as claimed in claim 1, it is characterized in that, comprise the steps:
By primary coil (1) with after secondary coil (2) successively nested loading small shell (7), reliable with epoxy resin A (101) embedding sealing;
Magnetic sheet (41,42) is loaded in magnetic sheet cover (61,62), then is connected to through inner magnetic core (3) two ends of the primary coil (1) of coil assembly to form coil assembly;
After coil assembly, ignition module (8) are loaded large housing (9) successively, by epoxy resin B (102) supplementary irrigation; Wherein, the hardness of described epoxy resin B (102) is less than the hardness of described epoxy resin A (101).
5. the manufacture method of powder metallurgy packet type ignition coil according to claim 4, is characterized in that: the surface of described small shell (7), described magnetic sheet cover (61,62) is round and smooth shape.
6. the manufacture method of the powder metallurgy packet type ignition coil according to claim 4 or 5, is characterized in that: described small shell (7), described magnetic sheet cover (61,62) are made by plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210028728.6A CN102592811B (en) | 2012-02-10 | 2012-02-10 | Powdered-alloy tapped ignition coil and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210028728.6A CN102592811B (en) | 2012-02-10 | 2012-02-10 | Powdered-alloy tapped ignition coil and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102592811A CN102592811A (en) | 2012-07-18 |
| CN102592811B true CN102592811B (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210028728.6A Active CN102592811B (en) | 2012-02-10 | 2012-02-10 | Powdered-alloy tapped ignition coil and manufacture method thereof |
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| Country | Link |
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| CN (1) | CN102592811B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158321A (en) * | 2016-08-11 | 2016-11-23 | 昆山凯迪汽车电器有限公司 | Ignition coil magnetic structure |
| DE102018109050A1 (en) * | 2018-04-17 | 2019-10-17 | Borgwarner Ludwigsburg Gmbh | Ignition coil and method of manufacturing an ignition coil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6763816B1 (en) * | 1999-06-09 | 2004-07-20 | Hitachi, Ltd. | Internal combustion engine ignition coil |
| CN201174316Y (en) * | 2008-03-19 | 2008-12-31 | 李延军 | Dry type sparking coil of vehicle |
| CN201758068U (en) * | 2010-06-21 | 2011-03-09 | 浙江朕炜电器有限公司 | Efficient dry-type electronic injection ignition coil capable of material saving |
| CN102132365A (en) * | 2008-08-22 | 2011-07-20 | 住友电气工业株式会社 | Reactor component and reactor |
| CN202443848U (en) * | 2012-02-10 | 2012-09-19 | 昆山凯迪汽车电器有限公司 | Powder alloy grouped ignition coil |
-
2012
- 2012-02-10 CN CN201210028728.6A patent/CN102592811B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6763816B1 (en) * | 1999-06-09 | 2004-07-20 | Hitachi, Ltd. | Internal combustion engine ignition coil |
| CN201174316Y (en) * | 2008-03-19 | 2008-12-31 | 李延军 | Dry type sparking coil of vehicle |
| CN102132365A (en) * | 2008-08-22 | 2011-07-20 | 住友电气工业株式会社 | Reactor component and reactor |
| CN201758068U (en) * | 2010-06-21 | 2011-03-09 | 浙江朕炜电器有限公司 | Efficient dry-type electronic injection ignition coil capable of material saving |
| CN202443848U (en) * | 2012-02-10 | 2012-09-19 | 昆山凯迪汽车电器有限公司 | Powder alloy grouped ignition coil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102592811A (en) | 2012-07-18 |
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