JPH09167711A - Ignition coil for internal combustion engine - Google Patents

Ignition coil for internal combustion engine

Info

Publication number
JPH09167711A
JPH09167711A JP7348108A JP34810895A JPH09167711A JP H09167711 A JPH09167711 A JP H09167711A JP 7348108 A JP7348108 A JP 7348108A JP 34810895 A JP34810895 A JP 34810895A JP H09167711 A JPH09167711 A JP H09167711A
Authority
JP
Japan
Prior art keywords
coil
internal combustion
wound
combustion engine
core
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.)
Pending
Application number
JP7348108A
Other languages
Japanese (ja)
Inventor
Hikari Kikuta
光 菊田
Hitoshi Takeuchi
仁司 竹内
Toshiro Suzuki
敏郎 鈴木
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.)
Aisan Industry Co Ltd
Original Assignee
Aisan Industry Co Ltd
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 Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Priority to JP7348108A priority Critical patent/JPH09167711A/en
Publication of JPH09167711A publication Critical patent/JPH09167711A/en
Pending legal-status Critical Current

Links

Landscapes

  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a core construction in which magnetic flux can effectively be utilized, to be easily able to wind a primary coil and to have a constitution which can minimally and easily be manufactured. SOLUTION: A cylindrical inner core 10 is constituted of a plate with magnetic body having a U shape of horizontal view being wound around a core rod 12 with of magnetic body and of laminating member 11 being formed to be made expanded section parts on which are wound as a spiral shape at both terminal parts. A primary coil is wound between the expanded section parts of the both terminal parts and a second coil is wound as the primary coil at least being surrounded. The inner core 10, the primary and secondary coil are contained in an outer core 30.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は内燃機関用点火コイ
ルに関し、特に、磁性体の平板を巻回した部材に、一次
コイル及び二次コイルを装着する内燃機関用点火コイル
に係る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ignition coil for an internal combustion engine, and more particularly to an ignition coil for an internal combustion engine in which a primary coil and a secondary coil are mounted on a member formed by winding a magnetic flat plate.

【0002】[0002]

【従来の技術】近時、内燃機関用点火コイルの一層の小
型化が要請されており、そのコア構造として、例えば特
開平4−87311号公報に開示されているように、磁
性体の線材を束ねて中心鉄心を形成したものが知られて
いる。これは、エンジンの円柱状プラグホールに収納す
るため、点火コイルを小型の円柱状に形成することを企
図したものである。
2. Description of the Related Art Recently, there has been a demand for further miniaturization of ignition coils for internal combustion engines, and as a core structure thereof, for example, a magnetic wire is used as disclosed in Japanese Patent Laid-Open No. 4-87311. It is known that a central iron core is formed by bundling. This is intended to form the ignition coil into a small cylindrical shape so as to be housed in the cylindrical plug hole of the engine.

【0003】同公報には、中心鉄心の作成方法として、
丸ダイスを介して線材を引き抜く方法、上型と下型で作
られる空間に線材を充填した後プレス成形する方法、線
材を整列させ、金属粉の表面に樹脂粉末が付着した材料
と共に、型によってプレスする方法、線材をケイ素鋼管
中に設置して加熱しつつ、ケイ素鋼管をダイス中で引き
抜く方法、更に、ケイ素鋼の薄板を2〜3重に巻き付
け、それをダイス中で引き抜く方法が開示されている。
また、同公報には、実施例として線材を円柱状に束ねた
ものの両端部を四角にした中心鉄心も開示されている。
In the publication, as a method of creating a central iron core,
A method of pulling out the wire through a round die, a method of filling the space made by the upper mold and the lower mold with the wire and then press-forming, aligning the wire, and a material with resin powder adhered to the surface of the metal powder, depending on the mold A method of pressing, a method of drawing a silicon steel tube in a die while installing a wire in the silicon steel tube and heating, and a method of winding a thin plate of silicon steel in a couple of layers and then drawing it in the die are disclosed. ing.
The publication also discloses, as an example, a center iron core in which wires are bundled in a cylindrical shape and both ends are squared.

【0004】[0004]

【発明が解決しようとする課題】上記公報に記載のよう
に点火コイルを円柱状に形成する場合には、中心鉄心、
即ちインナコアも円柱状に形成することが望ましい。そ
の一手段として、上記公報に記載のように複数の線材を
束ねる方法もあるが、実開平2−54213号公報に記
載されたアウタコアと同様、インナコアについても板状
磁性体を螺旋状、即ち渦巻状に巻回して積層構造とする
ことができる。
When the ignition coil is formed in a cylindrical shape as described in the above publication, a central core,
That is, it is desirable that the inner core is also formed in a cylindrical shape. As one of the means, there is a method of bundling a plurality of wire rods as described in the above publication, but like the outer core described in Japanese Utility Model Laid-Open No. 2-54213, a plate-shaped magnetic body is spiraled, that is, spiral, for the inner core. It can be wound into a shape to have a laminated structure.

【0005】しかし、平板を巻回してインナコアを形成
することとすると、巻き始めの中心部に空隙が形成され
るので、それだけ磁気回路としての有効断面積が減少す
ることになる。また、単に平板を巻回したのみでは均一
断面の円柱状に形成されるため、発生する磁束を有効に
利用することはできない。上記特開平4−87311号
公報には両端部を四角にした円柱状のインナコアも実施
例として示されているが、両端部の断面積は中間部の断
面積より小さく形成されている。これは角形平面磁石に
適合させるための変形例であるが、インナコアを介して
発生する磁束を、他のコアを含む磁気回路内で有効に利
用するには、インナコアの両端の断面積を拡大し中間部
より大きい断面積とする必要がある。しかも、上記実施
例のインナコアの構造では、両端部の断面積の方が小さ
いので、一次コイルの巻線を巻回する際、両端部の処理
が困難である。
However, if the flat core is wound to form the inner core, a void is formed at the center of the winding start, so that the effective area of the magnetic circuit is reduced. Further, simply winding a flat plate forms a column having a uniform cross section, so that the generated magnetic flux cannot be effectively used. In the above-mentioned Japanese Patent Laid-Open No. 4-87311, a cylindrical inner core having both ends squared is also shown as an example, but the cross-sectional areas of both ends are formed smaller than the cross-sectional area of the intermediate part. This is a modification for adapting to a rectangular flat magnet, but in order to effectively use the magnetic flux generated through the inner core in the magnetic circuit including other cores, the cross-sectional area of both ends of the inner core should be enlarged. The cross-sectional area must be larger than the middle part. Moreover, in the structure of the inner core of the above-mentioned embodiment, the cross-sectional area of both ends is smaller, so that it is difficult to process both ends when winding the winding of the primary coil.

【0006】そこで、本発明は、磁性体の平板を巻回し
た部材に、一次コイル及び二次コイルを装着する内燃機
関用点火コイルにおいて、磁束を有効に利用し得るコア
構造を有し、一次コイルを容易に巻装することができ、
小型で容易に製造し得る内燃機関用点火コイルを提供す
ることを課題とする。
In view of this, the present invention has a core structure capable of effectively utilizing magnetic flux in an ignition coil for an internal combustion engine in which a primary coil and a secondary coil are mounted on a member formed by winding a magnetic flat plate. The coil can be easily wound,
An object of the present invention is to provide a small-sized and easily manufactured ignition coil for an internal combustion engine.

【0007】[0007]

【課題を解決するための手段】上記の課題を解決するた
め、本発明は、磁性体の平板を巻回した部材に、一次コ
イル及び二次コイルを装着する内燃機関用点火コイルに
おいて、磁性体の棒部材に平面視コ字状の磁性体の平板
を巻き付け、両端部に拡大断面部が形成されるように渦
巻状に巻回して成る円柱部材と、該円柱部材の両端部に
形成した拡大断面部の間に巻装する一次コイルと、少く
とも該一次コイルを囲繞するように巻装する二次コイル
と、前記円柱部材、前記一次コイル及び前記二次コイル
を収容する磁性体の円筒部材とを備えるように構成した
ものである。
In order to solve the above problems, the present invention provides an ignition coil for an internal combustion engine in which a primary coil and a secondary coil are mounted on a member in which a flat plate of a magnetic material is wound. A cylindrical member formed by winding a U-shaped magnetic flat plate in a plan view around the rod member and spirally winding it so that enlarged cross-sections are formed at both ends, and enlarged members formed at both ends of the cylindrical member. A primary coil wound between the cross-sections, a secondary coil wound so as to surround at least the primary coil, and a cylindrical member, and a cylindrical member of a magnetic body that accommodates the primary coil and the secondary coil. And is configured to include.

【0008】前記二次コイルは、請求項2に記載のよう
に、円筒状の二次ボビンに巻線を巻回したものとし、前
記二次ボビンの中空部内に前記円柱部材の両端部の拡大
断面部が嵌合するように配置するとよい。
According to a second aspect of the present invention, the secondary coil has a winding wound around a cylindrical secondary bobbin, and both ends of the columnar member are enlarged in the hollow portion of the secondary bobbin. It may be arranged so that the cross-sections fit together.

【0009】[0009]

【発明の実施の形態】以下、本発明の内燃機関用点火コ
イルの望ましい実施形態を図面を参照して説明する。図
8は本発明の一実施形態に係る内燃機関用点火コイルを
示し、ケース60は、上方に開口部を有する筐体のイグ
ナイタ部60dと、その底面から下方に延出する円筒状
のコイル部60a及びプラグキャップ部60bを有する
合成樹脂製の容器状筐体である。図1は図2のA−A線
断面を示す図で、図1及び図2においてはコイル部60
aのみを示し、他の部分は省略している。
BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of an ignition coil for an internal combustion engine of the present invention will be described below with reference to the drawings. FIG. 8 shows an ignition coil for an internal combustion engine according to an embodiment of the present invention. A case 60 includes an igniter portion 60d of a casing having an opening at the top and a cylindrical coil portion extending downward from the bottom surface thereof. It is a container-like housing made of synthetic resin having 60a and a plug cap portion 60b. 1 is a view showing a cross section taken along the line AA of FIG. 2, and in FIG. 1 and FIG.
Only a is shown and other parts are omitted.

【0010】コイル部60aには図1及び図2に示すよ
うに、本発明の円柱部材たるインナコア10及び一次コ
イル14、二次コイルアセンブリ20、本発明の円筒部
材たるアウタコア30、並びに一対の補助コア及び永久
磁石(夫々、代表して40,50で表す)が収容されて
いる。図8に示すイグナイタ部60dにはイグナイタ
(図示せず)が収容されると共に、コネクタ部60cが
一体的に形成されている。尚、イグナイタは一次コイル
14の一次電流を制御するもので、イグニッションモジ
ュールとも呼ばれる。
As shown in FIGS. 1 and 2, the coil portion 60a includes an inner core 10 and a primary coil 14, which are cylindrical members of the present invention, a secondary coil assembly 20, an outer core 30, which is a cylindrical member of the present invention, and a pair of auxiliary members. A core and a permanent magnet (represented by 40 and 50, respectively) are housed. An igniter (not shown) is housed in the igniter portion 60d shown in FIG. 8 and a connector portion 60c is integrally formed. The igniter controls the primary current of the primary coil 14 and is also called an ignition module.

【0011】インナコア10は、図7に示すように、磁
性体の棒部材であるコアロッド12と、平面視コ字状に
形成された薄い平板の珪素鋼板SPの一辺にコアロッド
12が配置され、このコアロッド12を中心に渦巻状に
巻回された積層部材11とから成る。従って、図2に示
すように積層部材11の両端部に拡大断面部(代表して
11aで表す)が形成され、これらの間の中間部に本体
部11bが形成されている。尚、図1、図2及び図5に
おいて、インナコア10の断面のハッチングは図面の判
別が困難となるので省略している。
As shown in FIG. 7, the inner core 10 includes a core rod 12 which is a bar member made of a magnetic material, and a core rod 12 which is arranged on one side of a thin flat steel plate SP formed in a U shape in plan view. The laminated member 11 is spirally wound around the core rod 12. Therefore, as shown in FIG. 2, enlarged cross-sections (representatively represented by 11a) are formed at both ends of the laminated member 11, and a main body 11b is formed at an intermediate portion between them. 1, 2, and 5, hatching of the cross section of the inner core 10 is omitted because it is difficult to distinguish the drawings.

【0012】インナコア10の積層部材11の外面には
塗装層13が形成されており、本体部11bの塗装層1
3の外周面に一次コイル14の巻線が二層もしくは四層
に巻回されている。そして、これらを囲繞するように二
次コイルアセンブリ20が配設されている。二次コイル
アセンブリ20は、二次ボビン21に二次コイル22が
巻装されて成る。二次ボビン21は軸方向に所定間隔毎
に複数の鍔部21aが形成された樹脂製の円筒体であ
り、これらの鍔部21a間に形成される複数の環状溝内
に、二次コイル22の巻線が順次巻回されている。
A coating layer 13 is formed on the outer surface of the laminated member 11 of the inner core 10, and the coating layer 1 of the main body portion 11b is formed.
The windings of the primary coil 14 are wound in two or four layers on the outer peripheral surface of 3. And the secondary coil assembly 20 is arrange | positioned so that these may be surrounded. The secondary coil assembly 20 is formed by winding a secondary coil 22 around a secondary bobbin 21. The secondary bobbin 21 is a resin cylindrical body in which a plurality of collar portions 21a are formed at predetermined intervals in the axial direction, and the secondary coil 22 is provided in a plurality of annular grooves formed between the collar portions 21a. The windings are sequentially wound.

【0013】一方、インナコア10と共に磁気回路を形
成するアウタコア30が、図1及び図2に示すように珪
素鋼板によって円筒状に形成されており、ケース60の
コイル部60aの内側に密着して収容されている。
On the other hand, the outer core 30 forming a magnetic circuit together with the inner core 10 is formed of a silicon steel plate in a cylindrical shape as shown in FIGS. 1 and 2, and is housed in close contact with the inside of the coil portion 60a of the case 60. Has been done.

【0014】更に、図2及び図6に示すように、インナ
コア10の軸方向の両端には夫々矩形の永久磁石50が
配置されており、その外側には略矩形の珪素鋼板が積層
されて成る補助コア40が配置されている。両端に配置
される永久磁石50は、発生する磁束の方向が夫々同一
の方向であって、一次コイル14通電時にインナコア1
0内に形成される磁束の方向と逆向きとなるように配置
されている。而して、上述のインナコア10、永久磁石
50、補助コア40、及びアウタコア30によって磁気
回路が構成されている。
Further, as shown in FIGS. 2 and 6, rectangular permanent magnets 50 are arranged at both ends of the inner core 10 in the axial direction, and substantially rectangular silicon steel plates are laminated on the outer sides thereof. The auxiliary core 40 is arranged. The permanent magnets 50 arranged at both ends have the same direction of the generated magnetic flux, and the inner core 1 is energized when the primary coil 14 is energized.
It is arranged so as to be opposite to the direction of the magnetic flux formed in 0. Thus, the inner core 10, the permanent magnet 50, the auxiliary core 40, and the outer core 30 described above form a magnetic circuit.

【0015】上記の構成になる点火コイルの製造及び組
付に当たっては、先ず平面視コ字状の珪素鋼板SP(例
えば、厚さ0.27乃至0.65mm)の一端に、図7
に示すようにコアロッド12(例えば、直径1乃至2m
mの円形断面の鉄芯)が配置され、これを中心に渦巻状
に巻回されて積層部材11が形成される。
In manufacturing and assembling the ignition coil having the above-mentioned structure, first, one end of a silicon steel plate SP (for example, 0.27 to 0.65 mm in thickness) having a U-shape in plan view is attached to one end of FIG.
Core rod 12 (for example, a diameter of 1-2 m
m iron core) having a circular cross section is arranged, and is spirally wound around this to form the laminated member 11.

【0016】これにより、図2及び図3に示すように両
端部に拡大断面部11aを有するインナコア10が形成
され、その外面に例えば粉体塗装が施され、塗装層13
が形成される。そして、インナコア10の本体部11b
回りに、塗装層13を介して一次コイル14の巻線が巻
回される。尚、塗装層13に代えて、樹脂材料で形成し
た一対の半円筒体によって、インナコア10の本体部1
1bを被覆した後、一次コイル14の巻線を巻回するこ
ととしてもよい。
As a result, as shown in FIGS. 2 and 3, the inner core 10 having the enlarged cross-sections 11a at both ends is formed, and the outer surface thereof is subjected to, for example, powder coating, and the coating layer 13 is formed.
Is formed. Then, the main body portion 11b of the inner core 10
The winding of the primary coil 14 is wound around the coating layer 13. It should be noted that instead of the coating layer 13, a pair of semi-cylindrical bodies made of a resin material is used to form the main body 1 of the inner core 10.
The winding of the primary coil 14 may be wound after coating 1b.

【0017】一方、アウタコア30が珪素鋼板によって
円筒状に形成され、ケース60のコイル部60a内に挿
入もしくは圧入される。また、二次ボビン21に二次コ
イル22が巻装されて二次コイルアセンブリ20が形成
される。そして、二次ボビン21の中空部内に、一次コ
イル14が巻回されたインナコア10が収容され、その
両端部の拡大断面部11aが二次ボビン21の中空部の
内面に嵌合するように配置される。
On the other hand, the outer core 30 is formed of a silicon steel plate into a cylindrical shape, and is inserted or press-fitted into the coil portion 60a of the case 60. Further, the secondary coil 22 is wound around the secondary bobbin 21 to form the secondary coil assembly 20. Then, the inner core 10 around which the primary coil 14 is wound is housed in the hollow portion of the secondary bobbin 21, and the enlarged cross-section portions 11 a at both ends thereof are arranged so as to fit into the inner surface of the hollow portion of the secondary bobbin 21. To be done.

【0018】更に、インナコア10の軸方向の両端に夫
々永久磁石50及び補助コア40が装着された後、これ
らインナコア10、二次コイルアセンブリ20等がアウ
タコア30内に収容される。そして、ケース60のイグ
ナイタ部60dにイグナイタ(図示せず)が収容され、
一次コイル14の巻線の両端部がイグナイタに電気的に
接続される。これに対し、二次コイル22の巻線の一端
は接地され、他端は高圧ターミナル(図示せず)に接続
される。
Further, after the permanent magnets 50 and the auxiliary cores 40 are attached to both ends of the inner core 10 in the axial direction, the inner core 10, the secondary coil assembly 20 and the like are housed in the outer core 30. An igniter (not shown) is housed in the igniter portion 60d of the case 60,
Both ends of the winding of the primary coil 14 are electrically connected to the igniter. On the other hand, one end of the winding of the secondary coil 22 is grounded and the other end is connected to a high voltage terminal (not shown).

【0019】この後、コイル部60a及びイグナイタ部
60d内に熱硬化性の合成樹脂、例えばエポキシ樹脂が
充填、硬化されて図2に点描で示すように樹脂部15が
コイル部60a内に形成される(イグナイタ部60d内
については図示省略)。これにより、一次コイル14及
び二次コイル22が含侵固着されると共に、電気的接続
部が適切に絶縁され、更に二次コイル22の出力高電圧
に耐え得る絶縁性が確保される。尚、図8に示すコイル
部60a及びプラグキャップ部60bとイグナイタ部6
0d及びコネクタ部60cとを、別体として形成し、コ
イル部60aとイグナイタ部60dを接合することとし
てもよい。
Thereafter, the coil portion 60a and the igniter portion 60d are filled with a thermosetting synthetic resin, for example, an epoxy resin, and cured to form a resin portion 15 in the coil portion 60a as shown by a dotted line in FIG. (Not shown in the igniter portion 60d). As a result, the primary coil 14 and the secondary coil 22 are impregnated and fixed, and the electrical connection portion is appropriately insulated, and further, the insulating property capable of withstanding the output high voltage of the secondary coil 22 is secured. The coil portion 60a, the plug cap portion 60b and the igniter portion 6 shown in FIG.
0d and the connector 60c may be formed separately, and the coil 60a and the igniter 60d may be joined.

【0020】而して、内燃機関用点火コイル1は図8に
示す外形を呈し、必要に応じ、絶縁材料(例えばゴム)
によって筒状に形成されたプラグソケット(図示せず)
が、コイル部60a及びプラグキャップ部60bの外側
に装着される。そして、内燃機関(図示せず)に装着さ
れ、点火プラグ(図示せず)に接続される。この状態で
一次コイル14の一次電流が断続されると、二次コイル
22に逆起電力が誘起され30乃至40kvの高電圧が
発生し、この高電圧は点火プラグに出力される。これに
より、各点火プラグの電極部に火花放電が生じ、各燃焼
室(図示せず)内の圧縮混合気が着火される。
Thus, the internal combustion engine ignition coil 1 has the outer shape shown in FIG. 8 and, if necessary, an insulating material (for example, rubber).
A plug socket (not shown) formed in a cylindrical shape by
Is attached to the outside of the coil portion 60a and the plug cap portion 60b. Then, it is mounted on an internal combustion engine (not shown) and connected to a spark plug (not shown). When the primary current of the primary coil 14 is interrupted in this state, a counter electromotive force is induced in the secondary coil 22 to generate a high voltage of 30 to 40 kv, and this high voltage is output to the spark plug. As a result, spark discharge occurs in the electrode portion of each ignition plug, and the compressed air-fuel mixture in each combustion chamber (not shown) is ignited.

【0021】以上のように、内燃機関用点火コイル1の
インナコア10は、図7に示す平面視コ字状の珪素鋼板
SPがコアロッド12に巻き付けられ、両端部に拡大断
面部11aが形成された積層部材11と、その中心に収
容されたコアロッド12を有する円柱部材として構成さ
れているので、全断面を磁気回路とすることができると
共に、拡大断面部11aによって有効磁束密度を大とす
ることができる。従って、所定の点火性能を維持しつつ
インナコア10の断面積を小さくすることができ、装置
全体を小型に形成することができる。特に、インナコア
10の塗装層13に直接一次コイル14が巻回されるの
で、一次ボビンを設ける必要がなく小型に形成すること
ができ、しかも、インナコア10の拡大断面部11aは
一次コイル14を巻回する際の支持部としても機能する
ので、容易に巻回作業を行なうことができる。
As described above, in the inner core 10 of the ignition coil 1 for an internal combustion engine, the U-shaped silicon steel plate SP shown in FIG. 7 is wound around the core rod 12, and the enlarged cross-section portions 11a are formed at both ends. Since it is configured as a columnar member having the laminated member 11 and the core rod 12 housed in the center thereof, the entire cross section can be a magnetic circuit and the effective magnetic flux density can be increased by the enlarged cross section 11a. it can. Therefore, the cross-sectional area of the inner core 10 can be reduced while maintaining a predetermined ignition performance, and the entire device can be made small. In particular, since the primary coil 14 is wound directly on the coating layer 13 of the inner core 10, the primary coil 14 can be formed in a small size without the need of providing a primary bobbin, and the enlarged cross-section 11a of the inner core 10 is wound by the primary coil 14. Since it also functions as a support portion when rotating, the winding operation can be easily performed.

【0022】[0022]

【発明の効果】本発明は上述のように構成されているの
で以下に記載の効果を奏する。即ち、本発明の内燃機関
用点火コイルにおいては、磁性体の棒部材に平面視コ字
状の磁性体の平板を巻き付け、両端部に拡大断面部が形
成されるように渦巻状に巻回して成る円柱部材によって
インナコアを構成することとしているので、両端部の拡
大断面部間に一次コイルを容易に巻装することができ、
しかもインナコアを介して発生する磁束を有効に利用す
ることができる。而して、所定の点火性能を有する小型
の点火コイルを容易に製造することができる。
Since the present invention is configured as described above, the following effects can be obtained. That is, in the ignition coil for an internal combustion engine of the present invention, a magnetic material bar member is wound with a flat plate of a magnetic material having a U-shape in a plan view, and is spirally wound so as to form enlarged cross-sectional portions at both ends. Since the inner core is constituted by the columnar member, it is possible to easily wind the primary coil between the enlarged cross-sectional portions at both ends,
Moreover, the magnetic flux generated through the inner core can be effectively used. Thus, a small ignition coil having a predetermined ignition performance can be easily manufactured.

【0023】また、請求項2に係る内燃機関用点火コイ
ルにおいては、二次コイルが、円筒状の二次ボビンに巻
線を巻回して成り、二次ボビンの中空部内に円柱部材の
両端部の拡大断面部が嵌合するように配置することとし
ているので、組付が容易であり、小型の点火コイルを容
易に製造することができる。
In the ignition coil for an internal combustion engine according to a second aspect of the present invention, the secondary coil is formed by winding a winding wire on a cylindrical secondary bobbin, and both ends of the cylindrical member are provided in the hollow portion of the secondary bobbin. Since it is arranged so that the enlarged cross-section portion of (1) fits, it is easy to assemble and a small ignition coil can be easily manufactured.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施形態に係る内燃機関用点火コイ
ルのコイル部の横断面図である。
FIG. 1 is a cross-sectional view of a coil portion of an ignition coil for an internal combustion engine according to an embodiment of the present invention.

【図2】本発明の一実施形態に係る内燃機関用点火コイ
ルのコイル部の縦断面図である。
FIG. 2 is a vertical sectional view of a coil portion of an ignition coil for an internal combustion engine according to an embodiment of the present invention.

【図3】本発明の一実施形態におけるインナコアの正面
図である。
FIG. 3 is a front view of the inner core according to the embodiment of the present invention.

【図4】本発明の一実施形態におけるインナコアの平面
図である。
FIG. 4 is a plan view of the inner core according to the embodiment of the present invention.

【図5】図3のB−B線断面図である。FIG. 5 is a sectional view taken along line BB of FIG. 3;

【図6】本発明の一実施形態に係る内燃機関用点火コイ
ルのコイル部の横断面図である。
FIG. 6 is a cross-sectional view of a coil portion of an internal combustion engine ignition coil according to an embodiment of the present invention.

【図7】本発明の一実施形態のインナコアを構成する珪
素鋼板の展開図である。
FIG. 7 is a development view of a silicon steel sheet forming an inner core according to an embodiment of the present invention.

【図8】本発明の一実施形態に係る内燃機関用点火コイ
ルの斜視図である。
FIG. 8 is a perspective view of an internal combustion engine ignition coil according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 内燃機関用点火コイル 10 インナコア 11 積層部材 11a 拡大断面部 12 コアロッド 13 塗装層 14 一次コイル 15 樹脂部 20 二次コイルアセンブリ 21 二次ボビン 22 二次コイル 30 アウタコア 40 補助コア 50 永久磁石 60 ケース 1 Ignition Coil for Internal Combustion Engine 10 Inner Core 11 Laminated Member 11a Enlarged Cross Section 12 Core Rod 13 Coating Layer 14 Primary Coil 15 Resin Part 20 Secondary Coil Assembly 21 Secondary Bobbin 22 Secondary Coil 30 Outer Core 40 Auxiliary Core 50 Permanent Magnet 60 Case

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 磁性体の平板を巻回した部材に、一次コ
イル及び二次コイルを装着する内燃機関用点火コイルに
おいて、磁性体の棒部材に平面視コ字状の磁性体の平板
を巻き付け、両端部に拡大断面部が形成されるように渦
巻状に巻回して成る円柱部材と、該円柱部材の両端部に
形成した拡大断面部の間に巻装する一次コイルと、少く
とも該一次コイルを囲繞するように巻装する二次コイル
と、前記円柱部材、前記一次コイル及び前記二次コイル
を収容する磁性体の円筒部材とを備えたことを特徴とす
る内燃機関用点火コイル。
1. An ignition coil for an internal combustion engine in which a primary coil and a secondary coil are mounted on a member formed by winding a magnetic flat plate, and the magnetic flat plate is wound around a U-shaped magnetic flat plate around a rod member of the magnetic body. A columnar member formed by spirally winding so as to form enlarged cross-sections at both ends, a primary coil wound between the enlarged cross-sections formed at both ends of the columnar member, and at least the primary An ignition coil for an internal combustion engine, comprising: a secondary coil wound so as to surround the coil; and a magnetic cylindrical member that houses the columnar member, the primary coil, and the secondary coil.
【請求項2】 前記二次コイルが、円筒状の二次ボビン
に巻線を巻回して成り、前記二次ボビンの中空部内に前
記円柱部材の両端部の拡大断面部が嵌合するように配置
することを特徴とする請求項1記載の内燃機関用点火コ
イル。
2. The secondary coil is formed by winding a winding wire on a cylindrical secondary bobbin, and the enlarged cross-sectional portions of both ends of the columnar member are fitted in the hollow portion of the secondary bobbin. The ignition coil for an internal combustion engine according to claim 1, wherein the ignition coil is arranged.
JP7348108A 1995-12-14 1995-12-14 Ignition coil for internal combustion engine Pending JPH09167711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7348108A JPH09167711A (en) 1995-12-14 1995-12-14 Ignition coil for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7348108A JPH09167711A (en) 1995-12-14 1995-12-14 Ignition coil for internal combustion engine

Publications (1)

Publication Number Publication Date
JPH09167711A true JPH09167711A (en) 1997-06-24

Family

ID=18394799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7348108A Pending JPH09167711A (en) 1995-12-14 1995-12-14 Ignition coil for internal combustion engine

Country Status (1)

Country Link
JP (1) JPH09167711A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6474322B1 (en) * 1999-06-22 2002-11-05 Hitachi, Ltd. Ignition device for internal combustion engine
JP2009088479A (en) * 2007-09-14 2009-04-23 Denso Corp Ignition coil
JP2009238906A (en) * 2008-03-26 2009-10-15 Denso Corp Ignition coil, and method of manufacturing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6474322B1 (en) * 1999-06-22 2002-11-05 Hitachi, Ltd. Ignition device for internal combustion engine
JP2009088479A (en) * 2007-09-14 2009-04-23 Denso Corp Ignition coil
JP2009238906A (en) * 2008-03-26 2009-10-15 Denso Corp Ignition coil, and method of manufacturing the same

Similar Documents

Publication Publication Date Title
JPH09186029A (en) Ignition coil for internal combustion engine
JP2009038199A (en) Ignition coil
JPH09320865A (en) Internal-combustion ignition coil
JP5956951B2 (en) Method for manufacturing ignition coil for internal combustion engine
JP3550643B2 (en) Ignition coil for internal combustion engine
JP2009038198A (en) Ignition coil
JP2014212222A (en) Ignition coil for internal combustion engine
JPH09167711A (en) Ignition coil for internal combustion engine
JPH09167710A (en) Ignition coil for internal combustion engine
JPH0729752A (en) Ignition coil for internal combustion engine
JPH1167563A (en) Ignition coil in internal combustion engine
JPH09246075A (en) Ignition coil of internal combustion engine
US6448878B1 (en) Ignition coil assembly
JPH09246074A (en) Ignition coil for internal combustion engine
JP2000138126A (en) Ignition coil
JP3546991B2 (en) Method of manufacturing ignition coil and secondary spool
JP3795639B2 (en) Ignition coil for internal combustion engine
JPH09213543A (en) Ignition coil for internal combustion engines
JPH09219330A (en) Ignition coil for internal combustion engine
JPH08339931A (en) Ignition coil for internal combustion engine
JP3988230B2 (en) Method for manufacturing stick-type ignition coil
JP2003124042A (en) Ignition coil
JP2004304199A (en) Ignition coil for internal-combustion engine
JPH11204357A (en) Ignition coil for internal combustion engine
JPH09186030A (en) Ignition coil of internal combustion engine