JP3089891B2 - Ignition coil for internal combustion engine and manufacturing method thereof - Google Patents
Ignition coil for internal combustion engine and manufacturing method thereofInfo
- Publication number
- JP3089891B2 JP3089891B2 JP05109136A JP10913693A JP3089891B2 JP 3089891 B2 JP3089891 B2 JP 3089891B2 JP 05109136 A JP05109136 A JP 05109136A JP 10913693 A JP10913693 A JP 10913693A JP 3089891 B2 JP3089891 B2 JP 3089891B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- primary
- bobbin
- relay terminal
- conductor
- 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.)
- Expired - Lifetime
Links
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内燃機関用点火コイル
及び該点火コイルを製造する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ignition coil for an internal combustion engine and a method for manufacturing the ignition coil.
【０００２】[0002]
【従来の技術】内燃機関用点火装置に用いる点火コイル
は、１次ボビンに巻回された１次コイルと、２次ボビン
に巻回された２次コイルとからなり、２次コイルは１次
コイルの外側に同心的に配置される。１次ボビンの一端
にはつば板部が設けられていて、該つば板部に高圧コー
ド接続部が設けられ、該高圧コード接続部に高圧出力端
子が取り付けられている。２次コイルの一端は高圧出力
端子に電気的に接続され、他端は１次コイルの端末部に
接続される。2. Description of the Related Art An ignition coil used in an ignition device for an internal combustion engine comprises a primary coil wound around a primary bobbin and a secondary coil wound around a secondary bobbin. It is arranged concentrically outside the coil. A brim plate portion is provided at one end of the primary bobbin, a high-voltage cord connection portion is provided on the brim plate portion, and a high-voltage output terminal is attached to the high-voltage cord connection portion. One end of the secondary coil is electrically connected to the high voltage output terminal, and the other end is connected to the terminal of the primary coil.
【０００３】[0003]
【発明が解決しようとする課題】従来の内燃機関用点火
コイルでは、１次コイルが巻回された１次ボビンの外周
に２次コイルが巻回された２次ボビンを嵌合させた後、
２次ボビンの鍔部に取付けた端子金具に１次コイルの端
末部と２次コイルの他端の端末部とを巻き付けて半田付
けし、２次コイルの一端を高圧端子金具に半田付けして
いた。そのため、１次コイルと２次コイルとを組み合わ
せた後の結線作業に多くの手間を要し、製造能率が低下
するという問題があった。SUMMARY OF THE INVENTION In a conventional ignition coil for an internal combustion engine, after a secondary bobbin wound with a secondary coil is fitted around the primary bobbin wound with a primary coil,
The terminal of the primary coil and the terminal of the other end of the secondary coil are wound around a terminal fitting attached to the flange of the secondary bobbin and soldered, and one end of the secondary coil is soldered to the high voltage terminal fitting. Was. For this reason, there is a problem that the connection work after the combination of the primary coil and the secondary coil requires much labor, and the manufacturing efficiency is reduced.
【０００４】本発明の目的は、１次コイルと２次コイル
とを組み合わせた際に、１次コイルと２次コイルとの接
続及び２次コイルと高圧出力端子との接続を自動的に行
わせることができるようにして製造を容易にし、製造能
率を向上させることができるようにした内燃機関用点火
コイル及びその製造方法を提供することにある。An object of the present invention is to automatically connect a primary coil to a secondary coil and a secondary coil to a high voltage output terminal when a primary coil and a secondary coil are combined. It is an object of the present invention to provide an ignition coil for an internal combustion engine and a method of manufacturing the same, which can facilitate the manufacture by improving the efficiency and improve the manufacturing efficiency.
【０００５】[0005]
【課題を解決するための手段】本発明は、高圧出力端子
が取付けられた高圧コード接続部を備えたつば板部を一
端に有する１次ボビンと、該１次ボビンに巻回された１
次コイルと、２次ボビンと、該２次ボビンに巻回された
２次コイルとを備えていて、２次コイルの一端が高圧出
力端子に電気的に接続されている内燃機関用点火コイル
に係わるものである。SUMMARY OF THE INVENTION The present invention provides a primary bobbin having at one end a flange plate portion having a high-voltage cord connection portion to which a high-voltage output terminal is attached, and a primary bobbin wound around the primary bobbin.
An ignition coil for an internal combustion engine, comprising a secondary coil, a secondary bobbin, and a secondary coil wound around the secondary bobbin, one end of the secondary coil being electrically connected to a high voltage output terminal. It is concerned.
【０００６】本発明においては、１次コイルの端末部に
直接または該１次コイルの一部をなすコイル部分を介し
てつながる接点部を１次ボビンの他端側に設ける。また
２次ボビンの一端に高圧側中継端子金具を取り付けて該
高圧側中継端子金具に２次コイルの一端を接続し、２次
ボビンの他端に低圧側中継端子金具を取り付けて、該低
圧側中継端子金具に２次コイルの他端を接続する。そし
て、２次ボビンの内側に１次ボビンを挿入して、高圧出
力端子を高圧側中継端子に接触させ、接点部を低圧側中
継端子金具に接触させる。In the present invention, a contact portion connected to the terminal portion of the primary coil directly or via a coil portion forming a part of the primary coil is provided on the other end of the primary bobbin. Also, a high voltage side relay terminal is attached to one end of the secondary bobbin, one end of a secondary coil is connected to the high voltage side relay terminal, and a low voltage side relay terminal is mounted to the other end of the secondary bobbin. Connect the other end of the secondary coil to the relay terminal fitting. Then, the primary bobbin is inserted inside the secondary bobbin, the high voltage output terminal is brought into contact with the high voltage side relay terminal, and the contact portion is brought into contact with the low voltage side relay terminal fitting.
【０００７】上記接点部を設けるため、１次ボビンの他
端の外周部に導体掛け止め部を設けておくのが好まし
い。このような導体掛け止め部を設けておくと、１次コ
イルを構成するコイル導体の一部を該導体掛け止め部に
引っ掛け、導体掛け止め部に引っ掛けられたコイル導体
の導体掛け止め部の外面に沿う部分の絶縁被覆を除去し
て、該絶縁被覆が除去された部分を接点部とすることが
できる。[0007] In order to provide the contact portion, it is preferable to provide a conductor retaining portion on the outer peripheral portion of the other end of the primary bobbin. By providing such a conductor retaining portion, a part of the coil conductor constituting the primary coil is hooked on the conductor retaining portion, and the outer surface of the conductor retaining portion of the coil conductor hooked on the conductor retaining portion. Is removed, and the portion from which the insulating coating has been removed can be used as a contact portion.
【０００８】本発明の製造方法では、高圧出力端子が取
り付けられた高圧コード接続部を備えたつば板部を一端
に有し、他端に導体掛け止め部を有する１次ボビンを用
いて、該１次ボビンに１次コイルをレヤー巻していき、
最終レヤーを巻回する際に該最終レヤーの１ターンを構
成するコイル導体の一部を導体掛け止め部に引っ掛けた
後該最終レヤーを巻き上げる１次コイル巻回工程と、１
次コイルの最終レヤーの１ターンを構成するコイル導体
の導体掛け止め部の外面に沿う部分の絶縁被覆を除去し
て、該絶縁被覆が除去された部分を接点部とする接点部
形成工程と、一端に高圧側中継端子金具を備え他端に低
圧側中継端子金具を備えた２次ボビンを用いて、一端が
高圧側中継端子金具に接続され、他端が低圧側中継端子
金具に接続された２次コイルを該２次ボビンに巻回する
２次コイル巻回工程と、２次ボビンの内側に１次ボビン
を挿入して、高圧出力端子及び接点部をそれぞれ高圧側
中継端子金具及び低圧側中継端子金具に接触させるコイ
ル組立工程とを行う。In the manufacturing method of the present invention, a primary bobbin having a brim plate portion provided with a high-voltage cord connection portion to which a high-voltage output terminal is attached at one end and a conductor latching portion at the other end is used. Layer the primary coil around the primary bobbin,
A primary coil winding step of winding a final layer after winding a part of a coil conductor constituting one turn of the final layer on a conductor retaining portion when winding the final layer;
A contact portion forming step of removing a portion of the insulation along the outer surface of the conductor retaining portion of the coil conductor constituting one turn of the final layer of the next coil, and using the portion from which the insulation coating has been removed as a contact portion; Using a secondary bobbin having a high-voltage relay terminal at one end and a low-voltage relay terminal at the other end, one end was connected to the high-voltage relay terminal and the other end was connected to the low-voltage relay terminal. A secondary coil winding step of winding a secondary coil around the secondary bobbin; inserting a primary bobbin inside the secondary bobbin to connect a high voltage output terminal and a contact portion to a high voltage side relay terminal fitting and a low voltage side, respectively; And a coil assembling step of contacting the relay terminal fitting.
【０００９】上記１次コイル巻回工程と２次コイル巻回
工程とは順序を問わない。The order of the primary coil winding step and the secondary coil winding step does not matter.
【００１０】[0010]
【作用】上記のように、１次ボビンのつば板部と反対側
の端部に１次コイルにつながる接点部を設けるととも
に、２次ボビンの一端及び他端にそれぞれ２次コイルの
一端及び他端につながる高圧側中継端子金具及び低圧側
中継端子金具を設けて、１次ボビンを２次ボビンの内側
に挿入した際に、高圧出力端子及び接点部がそれぞれ高
圧側中継端子及び低圧側中継端子に接触するように構成
すると、１次コイルと２次コイルとを組み合わせた際
に、２次コイルの一端と高圧出力端子との間、及び２次
コイルの他端と１次コイルとの間の電気的な接続を自動
的に行うことができるため、従来１次コイルと２次コイ
ルとを組み合わせた後に必要としていた面倒な結線作業
を省略して点火コイルの製造能率を向上させることがで
きる。As described above, the contact portion connected to the primary coil is provided at the end of the primary bobbin opposite to the brim plate portion, and one end of the secondary coil and the other end are provided at one end and the other end of the secondary bobbin, respectively. When a high-voltage side relay terminal fitting and a low-voltage side relay terminal fitting connected to the end are provided and a primary bobbin is inserted inside a secondary bobbin, a high-voltage output terminal and a contact portion are respectively a high-voltage side relay terminal and a low-voltage side relay terminal. When the primary coil and the secondary coil are combined, the contact between the one end of the secondary coil and the high-voltage output terminal and between the other end of the secondary coil and the primary coil Since the electrical connection can be made automatically, it is possible to improve the production efficiency of the ignition coil by eliminating the troublesome connection work required after combining the primary coil and the secondary coil in the related art.
【００１１】上記のように、１次ボビンの他端の外周部
に導体掛け止め部を設けて、１次コイルを構成するコイ
ル導体の一部を該導体掛け止め部に引っ掛け、該コイル
導体の導体掛け止め部の外面に沿う部分の絶縁被覆を除
去して、絶縁被覆が除去された部分を接点部とすると、
１次コイルのコイル導体そのものを利用して低圧側中継
端子を接触させる接点部を構成できるため、部品点数を
増加させることなく、また１次コイルの端末部を接点に
接続する手間を要することなく、１次コイルと２次コイ
ルとの接続部を構成することができる。As described above, the conductor retaining portion is provided on the outer periphery of the other end of the primary bobbin, and a part of the coil conductor constituting the primary coil is hooked on the conductor retaining portion, and If the insulating coating of the part along the outer surface of the conductor retaining part is removed and the part where the insulating coating is removed is used as the contact part,
Since the contact portion that makes contact with the low-voltage side relay terminal can be configured using the coil conductor itself of the primary coil, the number of components is not increased, and no trouble is required to connect the terminal portion of the primary coil to the contact. And a connecting portion between the primary coil and the secondary coil.
【００１２】[0012]
【実施例】図１及び図２は本発明の実施例の点火コイル
の全体的な構成を示したもので、図１は図２のＡ−Ａ線
断面図、図２は図１のＢ−Ｂ線断面図である。これらの
図において１は樹脂の成形品からなる１次ボビン、２は
１次ボビンに巻回された１次コイル、３は樹脂の成形品
からなる２次ボビン、４は２次ボビンに巻回された２次
コイル、５は樹脂製のケースである。1 and 2 show the overall configuration of an ignition coil according to an embodiment of the present invention. FIG. 1 is a sectional view taken along line AA of FIG. 2, and FIG. It is a B sectional view. In these figures, 1 is a primary bobbin made of a resin molded product, 2 is a primary coil wound around the primary bobbin, 3 is a secondary bobbin made of a resin molded product, 4 is wound on a secondary bobbin. The secondary coils 5 and 5 are resin cases.
【００１３】１次ボビン１は、図３（Ａ），（Ｂ）に示
したように、ほぼ小判形の断面形状を有する胴部１０１
と、該胴部の一端側に設けられたつば板部１０２と、胴
部１０１の他端側に設けられたつば部１０３とを有し、
つば板部１０２の外周寄りの部分には筒状の高圧コード
接続部１０４が設けられている。高圧コード接続部１０
４はその軸線をコイルの軸線と平行な方向に向けた状態
で設けられていて、その底部を貫通させて木ネジ状の高
圧出力端子６が取り付けられている。つば板部１０２の
側面の対称位置には１対の突出部１０５，１０６が設け
られ、これらの突出部内に一端が埋設された状態で、コ
イルの軸線方向に延びる１対の舌片状の１次端子金具１
０７及び１０８が取り付けられている。１次端子１０７
及び１０８にはそれぞれコイルの軸線と直角な方向に延
びるリード端子１０９及び１１０が設けられていて、こ
れらのリード端子は突出部１０５及び１０６から同方向
に突出させられている。As shown in FIGS. 3A and 3B, the primary bobbin 1 has a body 101 having a substantially oval cross-sectional shape.
And a flange plate portion 102 provided on one end side of the body portion, and a flange portion 103 provided on the other end side of the body portion 101,
A cylindrical high-voltage cord connection portion 104 is provided at a portion near the outer periphery of the brim plate portion 102. High voltage cord connection 10
Reference numeral 4 is provided with its axis oriented in a direction parallel to the axis of the coil, and a wood screw-shaped high-voltage output terminal 6 is attached through the bottom thereof. A pair of protrusions 105 and 106 are provided at symmetrical positions on the side surface of the flange plate portion 102, and a pair of tongue-shaped ones extending in the axial direction of the coil with one end embedded in these protrusions. Next terminal fitting 1
07 and 108 are attached. Primary terminal 107
And 108 are provided with lead terminals 109 and 110, respectively, which extend in a direction perpendicular to the axis of the coil, and these lead terminals protrude from the protrusions 105 and 106 in the same direction.
【００１４】１次ボビン１の他端側に設けられたつば部
１０３の外端面に３つのリブ状の突起１１１ａ〜１１１
ｃが９０度間隔で設けられている。これらの突起はそれ
ぞれの先端部がつば部１０３の外周よりも更に径方向の
外側に突出するように設けられていて、中央に設けられ
た１つの突起１１１ｂのつば部１０３の外周より突出し
た部分が導体掛け止め部１１２となっている。Three rib-like projections 111a to 111 are provided on the outer end face of the collar 103 provided on the other end of the primary bobbin 1.
c are provided at 90-degree intervals. These projections are provided such that their respective tips project further radially outward than the outer periphery of the collar portion 103, and portions of the one projection 111b provided at the center project from the outer periphery of the collar portion 103. Are conductor holding portions 112.
【００１５】１次ボビン１のつば板部１０２には、後記
する２次ボビンに設けられた位置決め突起及び係止突起
がそれぞれ挿入される位置決め孔１１４及び係止孔１１
５が設けられている。A positioning hole 114 and a locking hole 11 into which a positioning protrusion and a locking protrusion provided on a secondary bobbin to be described later are inserted, respectively, are formed in the brim plate portion 102 of the primary bobbin 1.
5 are provided.
【００１６】１次ボビンの胴部１０１に絶縁被覆された
コイル導体を円筒状に巻回することにより、１次コイル
２がレヤー巻きされている。この例では、図４に示すよ
うに、１次コイルの最終レヤーの巻き始め側の１ターン
を構成するコイル導体２ａの一部が導体掛け止め部１１
２に引っ掛けられ、最終レヤーの１ターンを構成する導
体２ａの導体掛け止め部１１２の外端面に沿う部分の絶
縁被覆が除去されて、該絶縁被覆が除去された部分によ
り接点部２０１が構成されている。最終レヤーの巻き始
めの１ターンの一部が導体掛け止め部１１２に引っ掛け
られた後、該最終レヤーが最後まで巻回されて１次コイ
ル２が巻き上げられている。The primary coil 2 is layer-wound by winding a coil conductor insulatively coated on the body 101 of the primary bobbin in a cylindrical shape. In this example, as shown in FIG. 4, a part of the coil conductor 2a constituting one turn on the winding start side of the final layer of the primary coil is
2, the portion of the conductor 2 a constituting one turn of the final layer along the outer end surface of the conductor retaining portion 112 is removed, and the contact portion 201 is formed by the portion from which the insulating coating has been removed. ing. After a part of one turn at the beginning of winding of the final layer is hooked on the conductor retaining portion 112, the final layer is wound up to the end and the primary coil 2 is wound up.
【００１７】１次コイル２の一端（巻き始め側の端末
部）２Ａは１次端子金具１０７につながるリード端子１
０９に巻き付けられて、該リード端子に電気的に接続さ
れている。また１次コイル２の他端（巻き終り側の端末
部）２Ｂは、１次端子金具１０８につながるリード端子
１１０に巻き付けられて、該リード端子に電気的に接続
されている。One end (end portion on the winding start side) 2A of the primary coil 2 is a lead terminal 1 connected to the primary terminal fitting 107.
09 and is electrically connected to the lead terminal. The other end (end portion on the winding end side) 2B of the primary coil 2 is wound around a lead terminal 110 connected to the primary terminal fitting 108, and is electrically connected to the lead terminal.
【００１８】２次ボビン３は、胴部３０１の外周に軸線
方向に並ぶ多数のコイル巻回溝３０２，３０２，…を形
成したもので、コイル巻回溝３０２，３０２，…にそれ
ぞれ巻回された単位コイル４ａ，４ａ，…が直列に接続
されて２次コイル４が構成されている。The secondary bobbin 3 has a plurality of coil winding grooves 302, 302,... Arranged in the axial direction on the outer periphery of the body 301, and is wound around the coil winding grooves 302, 302,. The unit coils 4a, 4a,... Are connected in series to form the secondary coil 4.
【００１９】２次ボビン３の一端側に高圧側中継端子金
具７が取り付けられている。本実施例で用いる高圧側中
継端子金具７は、図６に示すように、断面が矩形状を呈
する導体をＪ字形に折り曲げ成形したもので、その折り
返し部７ａが２次ボビン３の一端側に設けられた溝部内
に圧入されている。中継端子金具７の長辺部７ｂはその
中間部から斜めに折り曲げられ、短辺部７ｃには２次コ
イル４の一端４Ａが巻き付けられている。A high voltage side relay terminal fitting 7 is attached to one end of the secondary bobbin 3. As shown in FIG. 6, the high-voltage side relay terminal fitting 7 used in this embodiment is formed by bending a conductor having a rectangular cross section into a J-shape, and the folded portion 7a is provided at one end of the secondary bobbin 3. It is press-fitted into the provided groove. The long side portion 7b of the relay terminal fitting 7 is bent obliquely from the middle portion thereof, and one end 4A of the secondary coil 4 is wound around the short side portion 7c.
【００２０】図５（Ｂ）に示したように、２次ボビン３
の他端側には低圧側中継端子金具８が取り付けられてい
る。低圧側中継端子金具８は打ち抜きにより形成された
板状の部材からなっていて、その２か所に設けられた孔
が２次ボビンの端面に形成された突起３０３に嵌合さ
れ、該突起３０３の頭部が加熱された状態でかしめられ
て、端子金具８が２次ボビンの端面に固定されている。
２次ボビン３の他端のつば部の一部がカットされて切り
欠き部３０４が形成され、低圧側中継端子金具８の一端
８ａが切り欠き部３０４から径方向に突出した状態で配
置されている。低圧側中継端子金具８の他端８ｂは２次
ボビンの内周よりも径方向の内側に突出させられてい
る。低圧側中継端子金具８の一端に２次コイル４の他端
４Ｂが巻き付けられている。As shown in FIG. 5B, the secondary bobbin 3
A low-voltage side relay terminal fitting 8 is attached to the other end of the connector. The low-voltage relay terminal fitting 8 is formed of a plate-like member formed by punching, and holes provided at two locations thereof are fitted into projections 303 formed on the end surface of the secondary bobbin. Is crimped in a heated state, and the terminal fitting 8 is fixed to the end face of the secondary bobbin.
A part of the brim at the other end of the secondary bobbin 3 is cut to form a notch 304, and one end 8a of the low-voltage relay terminal fitting 8 is arranged so as to project radially from the notch 304. I have. The other end 8b of the low-voltage side relay terminal fitting 8 projects radially inward from the inner periphery of the secondary bobbin. The other end 4 </ b> B of the secondary coil 4 is wound around one end of the low-voltage side relay terminal fitting 8.
【００２１】２次ボビン３の一端にはまた、軸線方向に
突出した位置決め突起３０５と、弾性変形が可能な拡大
頭部３０６ａを先端部に有するキノコ形の係止突起３０
６とがそれぞれ１次ボビンの位置決め孔１１４及び係止
孔１１５に対応させて設けられている。At one end of the secondary bobbin 3, a positioning projection 305 protruding in the axial direction and a mushroom-shaped locking projection 30 having an enlargedly deformable enlarged head 306a at its distal end are also provided.
6 and the positioning hole 114 of the primary bobbin and the locking, respectively.
It is provided corresponding to the hole 115 .
【００２２】本実施例では、２次ボビン３の胴部の内側
に１次ボビン１の胴部を挿入して、位置決め突起３０５
を位置決め孔１１４に挿入し、係止突起３０６を係止孔
１１５に嵌合させた状態で、高圧出力端子６の頭部６ａ
及び接点部２０１がそれぞれ高圧側中継端子金具７及び
低圧側中継端子金具８に所定の接触圧力をもって接触す
るように中継端子金具７及び８の位置と形状とが設定さ
れている。接点部２０１と低圧側中継端子金具８との接
触状態を図４に示してある。In this embodiment, the body of the primary bobbin 1 is inserted inside the body of the secondary bobbin 3 so that the positioning protrusion 305 is formed.
Is inserted into the positioning hole 114 and the head 6 a of the high-voltage output terminal 6 is
The positions and shapes of the relay terminal fittings 7 and 8 are set so that the contact point 201 and the high-voltage side relay terminal fitting 7 and the low-voltage side relay terminal fitting 8 come into contact with a predetermined contact pressure, respectively. FIG. 4 shows a contact state between the contact portion 201 and the low-voltage side relay terminal fitting 8.
【００２３】なお図２及び図５（Ｂ）において、３０７
は２次ボビンの他端側の端面に形成された補強用のリブ
である。In FIGS. 2 and 5B, 307
Is a reinforcing rib formed on the other end surface of the secondary bobbin.
【００２４】本発明の点火コイルを製造方法において
は、１次ボビン１に１次コイル２をレヤー巻して、最終
レヤーを巻回する際に該最終レヤーの１ターンを構成す
るコイル導体２ａの一部を導体掛け止め部１１２に引っ
掛けた後該最終レヤーを巻き上げる１次コイル巻回工程
と、２次ボビン３に２次コイル４を巻回して、その一端
及び他端をそれぞれ高圧側中継端子金具７及び低圧側中
継端子金具８に接続する２次コイル巻回工程とを個別に
行う。従って、１次コイルと２次コイルとの間の結線作
業等の手間を要することなく、それぞれのコイルを能率
良く巻回することができる。In the method for manufacturing an ignition coil according to the present invention, the primary coil 2 is layer-wound on the primary bobbin 1, and when the final layer is wound, the coil conductor 2a constituting one turn of the final layer is formed. A primary coil winding step of winding the final layer after partially hooking the conductor retaining portion 112, winding the secondary coil 4 around the secondary bobbin 3, and connecting one end and the other end to the high voltage side relay terminals, respectively. The secondary coil winding step of connecting to the metal fitting 7 and the low-voltage side relay terminal metal fitting 8 is individually performed. Therefore, each coil can be efficiently wound without requiring any trouble such as connection work between the primary coil and the secondary coil.
【００２５】１次コイルと２次コイルとを組み合わせる
のに先立って、１次コイルの最終レヤーの１ターンを構
成するコイル導体２０１の導体掛け止め部の外面に沿う
部分の絶縁被覆を除去して、該絶縁被覆が除去された部
分を接点部２０１とする接点部形成工程を行う。この接
点部形成工程における絶縁被覆の除去は、コイル導体に
研磨用の砂を吹き付ける（サンドブラストする）か、ま
たはコイル導体にやすりを軽く当てることにより容易に
行うことができる。Prior to combining the primary coil and the secondary coil, the insulating coating is removed from the portion of the coil conductor 201 that constitutes one turn of the final layer of the primary coil along the outer surface of the conductor retaining portion. Then, a contact portion forming step is performed in which the portion from which the insulating coating has been removed is used as the contact portion 201. The removal of the insulating coating in the contact portion forming step can be easily performed by blowing (sandblasting) sand for polishing on the coil conductor or lightly applying a file to the coil conductor.
【００２６】接点部形成工程を行った後、２次コイルが
巻回された２次ボビン３の胴部の内側に１次コイルが巻
回された１次ボビン１の胴部を挿入して、高圧出力端子
６の頭部６ａ及び接点部２０１をそれぞれ高圧側中継端
子金具７及び低圧側中継端子８に接触させるコイル組立
工程を行う。この工程では、２次ボビン３の位置決め突
起３０５を１次ボビンの位置決め孔１１４に挿入し、係
止突起３０６を係止孔１１５に嵌合させて１次ボビンと
２次ボビンとを結合し、高圧出力端子６の頭部及び接点
部２０１をそれぞれ高圧側中継端子金具７及び低圧側中
継端子金具８に接触させる。After performing the contact portion forming step, the body of the primary bobbin 1 on which the primary coil is wound is inserted into the inside of the body of the secondary bobbin 3 on which the secondary coil is wound. A coil assembling step of bringing the head 6a of the high voltage output terminal 6 and the contact portion 201 into contact with the high voltage side relay terminal fitting 7 and the low voltage side relay terminal 8, respectively, is performed. In this step, the positioning projections 305 of the secondary bobbin 3 are inserted into the positioning holes 114 of the primary bobbin, and the locking projections 306 are fitted into the locking holes 115 to connect the primary bobbin and the secondary bobbin. The head of the high voltage output terminal 6 and the contact portion 201 are brought into contact with the high voltage side relay terminal fitting 7 and the low voltage side relay terminal fitting 8 respectively.
【００２７】このように、本発明においては、半田付け
を行うことなく、２次ボビンの内側に１次ボビンを挿入
するだけで自動的に１次コイルと２次コイルとの間の電
気的な接続及び２次コイルと高圧出力端子との間の接続
を行うことができるため、点火コイルの組み立てを簡単
にすることができる。As described above, in the present invention, the electric connection between the primary coil and the secondary coil is automatically performed only by inserting the primary bobbin inside the secondary bobbin without performing soldering. Since the connection and the connection between the secondary coil and the high voltage output terminal can be made, the assembly of the ignition coil can be simplified.
【００２８】上記のように、１次コイルが巻回された１
次ボビンと２次コイルが巻回された２次ボビンとを組み
合わせてコイル組立体１０を構成した後、該コイル組立
体をケース５に挿入し、１次ボビン１の胴部１０１の内
側に鉄心（図示せず）を挿入した後、ケース５内にエポ
キシ樹脂等の絶縁樹脂を注型して、該樹脂を硬化させる
ことによりケース内にコイル組立体と鉄心とを固定す
る。As described above, the primary coil is wound around the primary coil.
After composing the coil assembly 10 by combining the secondary bobbin and the secondary bobbin around which the secondary coil is wound, the coil assembly is inserted into the case 5 and the iron core is inserted inside the body 101 of the primary bobbin 1. After inserting (not shown), an insulating resin such as an epoxy resin is poured into the case 5 and the resin is cured to fix the coil assembly and the iron core in the case.
【００２９】ケース５は筒状に形成されていて、その外
周部には、高圧コード接続部１０４を内側に収容する膨
出部５０１と、リード端子１０９及び１１０をそれぞれ
内側に収容する膨出部５０２及び５０３とが形成されて
いる。またケース５の底部には、１次ボビン１の胴部１
０１の端部を嵌合させるための凹部５０５が形成されて
いる。The case 5 is formed in a cylindrical shape, and its outer peripheral portion has a bulging portion 501 for accommodating the high-voltage cord connection portion 104 inside and a bulging portion for accommodating the lead terminals 109 and 110 inside. 502 and 503 are formed. Also, on the bottom of the case 5, the body 1 of the primary bobbin 1
A recess 505 is formed for fitting the end portion of the “01”.
【００３０】なお点火コイルの外装は、上記のようなケ
ース及び注型樹脂に限られるものではなく、コイル組立
体を被覆するモールド部を射出成形することにより点火
コイルの外装を形成するようにしてもよい。The exterior of the ignition coil is not limited to the case and the casting resin as described above. The exterior of the ignition coil can be formed by injection molding a mold portion covering the coil assembly. Is also good.
【００３１】上記の実施例においては、１次コイルの最
終ターンの巻き始め側の１ターンを構成するコイル導体
の一部に接点部を形成しているため、該接点部は１次コ
イルの一部をなすコイル部分（最終レヤーのコイル部
分）を介して１次コイルの他端に接続されることにな
る。従って、図１０に示したように、２次コイル４の巻
き始め側の端部４Ｂは、１次コイルの巻き終り側の端部
２Ｂよりも所定のターン数（最終レヤーの巻数）だけ手
前の位置に接続される。この場合、２次コイル４の巻き
始め側の端部４Ｂの電位と１次コイル２の巻き始め側の
端部２Ｂの電位とが一致しなくなるが、実用上は問題が
ない。In the above embodiment, since the contact portion is formed on a part of the coil conductor which constitutes one turn on the winding start side of the last turn of the primary coil, the contact portion is formed on one side of the primary coil. It is connected to the other end of the primary coil via the coil part (the coil part of the final layer). Therefore, as shown in FIG. 10, the end 4B on the winding start side of the secondary coil 4 is a predetermined number of turns (the number of turns of the last layer) before the end 2B on the winding end side of the primary coil. Connected to the location. In this case, the potential of the end 4B on the winding start side of the secondary coil 4 does not match the potential of the end 2B on the winding start side of the primary coil 2, but there is no practical problem.
【００３２】なお１次コイルの最終レヤーの巻数は他の
レヤーの巻数より少なくしても差支えない（１ターンで
も１ターン未満でも良い）。The number of turns of the final layer of the primary coil may be smaller than the number of turns of the other layers (one turn or less than one turn).
【００３３】また最終レヤーの巻回を１次ボビンの他端
側で終了させて、該最終レヤーの最終ターンを構成する
コイル導体を導体掛け止め部に引っ掛けた後、該コイル
導体を１次コイルの外周を経て（コイルを巻回すること
なく）１次端子１０８側に導くようにしても良い。The winding of the final layer is terminated at the other end of the primary bobbin, and the coil conductor constituting the final turn of the final layer is hooked on the conductor retaining portion. May be led to the primary terminal 108 side (without winding the coil) through the outer periphery of the terminal.
【００３４】上記の実施例において、２次コイル４の一
端４Ａ及び他端４Ｂをそれぞれ高圧側中継端子金具７及
び低圧側中継端子金具８に巻き付け接続する工程では、
２次コイル４の両端の絶縁被覆を除去する必要はなく、
単にコイル導体（通常はエナメル線）を中継端子金具７
及び８に密着させて巻き付けるだけでよい。２次コイル
４の両端の絶縁被覆を除去することなく、該２次コイル
の一端４Ａ及び他端４Ｂをそれぞれ高圧側中継端子金具
７及び低圧側中継端子金具８に巻き付け接続した場合、
最初は２次コイルの一端及び他端がそれぞれコイル導体
の絶縁被覆を介して高圧側及び低圧側中継端子金具に接
触している状態にあるが、点火コイルを点火装置に接続
して、その２次コイル４に点火プラグを接続し、１度点
火動作を行なわせると、２次コイルの両端と中継端子金
具７及び８との間にも火花放電が生じ、２次コイルの両
端の絶縁被覆が破られる。一度点火動作が行われて絶縁
被覆が破られると、以後は２次コイルと中継端子金具７
及び８との間の電気的な導通がとられるため、実用上は
何等問題がない。In the above embodiment, in the step of winding and connecting the one end 4A and the other end 4B of the secondary coil 4 to the high-voltage side relay terminal fitting 7 and the low-voltage side relay terminal fitting 8, respectively,
It is not necessary to remove the insulating coating on both ends of the secondary coil 4,
Simply connect the coil conductor (usually enameled wire) to the relay terminal fitting 7
And 8 only to be wound in close contact. When the one end 4A and the other end 4B of the secondary coil are wound around and connected to the high-voltage side relay terminal fitting 7 and the low-voltage side relay terminal fitting 8, respectively, without removing the insulating coating on both ends of the secondary coil 4.
At first, one end and the other end of the secondary coil are in contact with the high-voltage side and low-voltage side relay terminal fittings via the insulating coating of the coil conductor, respectively. When an ignition plug is connected to the secondary coil 4 and the ignition operation is performed once, a spark discharge also occurs between both ends of the secondary coil and the relay terminal fittings 7 and 8, and the insulating coating on both ends of the secondary coil is removed. Torn. Once the ignition operation is performed and the insulation coating is broken, the secondary coil and the relay terminal
And 8 are electrically connected, so that there is no practical problem.
【００３５】上記のように、コイル導体の絶縁被覆を除
去しないで２次コイルの一端及び他端をそれぞれ中継端
子金具７及び８に巻き付け接続する場合に、中継端子金
具７及び８として、コイル導体が巻き付けられる部分に
鋭いエッジ部を有するものを用いると、コイル導体を中
継端子金具に巻き付けた際にコイル導体の絶縁被覆が破
られてコイル導体の芯線が直接中継端子金具に接触する
ため、最初から好ましい接触状態を得ることができる。As described above, when the one end and the other end of the secondary coil are wound around and connected to the relay terminal fittings 7 and 8, respectively, without removing the insulating coating of the coil conductor, the coil conductors are used as the relay terminal fittings 7 and 8. When a coil conductor is used with a sharp edge at the part where it is wound, when the coil conductor is wound around the relay terminal fitting, the insulating coating of the coil conductor is broken and the core wire of the coil conductor comes into direct contact with the relay terminal fitting. From a preferable contact state.
【００３６】そのため、上記実施例では、低圧側中継端
子金具８として打ち抜きにより形成されたものを用いて
いる。金属板を打ち抜くことにより形成された端子金具
８には角部に鋭いエッジ部が形成されているので、単に
コイル導体を低圧側中継端子金具８に巻き付けるだけで
も、両者間の電気的な接続を良好にすることができる。
また高圧側中継端子金具７も、コイル導体が巻き付けら
れる部分に鋭いエッジを形成しておくのが好ましい。Therefore, in the above embodiment, the low-voltage side relay terminal fitting 8 formed by punching is used. Since the terminal fitting 8 formed by punching a metal plate has sharp edges at the corners, an electrical connection between the two can be obtained simply by winding the coil conductor around the low-voltage side relay terminal fitting 8. Can be good.
Also, it is preferable that the high voltage side relay terminal fitting 7 also has a sharp edge formed at a portion where the coil conductor is wound.
【００３７】図７（Ａ），（Ｂ）は高圧側中継端子金具
７の変形例を示したものである。この中継端子金具は、
板状部７０１と、該板状部の一端７０１ａ付近に一端が
つながる断面コの字形のコイル導体巻き付け部７０２と
を一体に有するもので、所定の形状に打ち抜いた金属板
を折り曲げることにより形成したものである。板状部７
０１の他端側には該板状部の一部を膨出させることによ
り、接点部７０１ｂが形成されている。この端子金具７
を用いる場合には、板状部７０１の一端７０１ａを２次
ボビン３の一端に設けた溝部内に挿入して固定し、板状
部７０１の接点部７０１ｂを高圧出力端子６の頭部６ａ
に接触させる。なお接点部７０１ｂはなくてもよい。FIGS. 7A and 7B show a modified example of the high-voltage side relay terminal fitting 7. FIG. This relay terminal fitting
It has a plate-shaped portion 701 and a coil conductor winding portion 702 having a U-shaped cross section connected to one end near one end 701a of the plate-shaped portion, and is formed by bending a metal plate punched into a predetermined shape. Things. Plate 7
A contact portion 701b is formed at the other end of the contact portion 01 by expanding a part of the plate portion. This terminal fitting 7
Is used, one end 701a of the plate portion 701 is inserted and fixed in a groove provided at one end of the secondary bobbin 3, and the contact portion 701b of the plate portion 701 is fixed to the head 6a of the high voltage output terminal 6.
Contact. Note that the contact portion 701b may not be provided.
【００３８】上記の実施例では、高圧コード接続部１０
４を２次ボビン３の外周部よりも更に外側に位置させて
設けているが、図８に示したように、高圧コード接続部
１０４を２次ボビン３の軸線方向の一端の側方に位置さ
せた状態で設けるようにしてもよい。この場合には、例
えば図９に示したように、断面がほぼＵ字形を呈する端
子金具本体７１０と、該本体７１０の幅方向の一端側か
ら起立したコイル導体巻き付け部７１１とを一体に有す
る高圧側中継端子金具７を用いて、図８に示したように
該端子金具７の本体７１０を２次ボビン３の一端のつば
部３１０に嵌合させて保持させ、２次ボビンのつば部３
１０の外端面に沿う本体７１０の端面を高圧出力端子６
の頭部に接触させる。In the above embodiment, the high-voltage cord connecting portion 10
4, the high-voltage cord connecting portion 104 is located on one side in the axial direction of the secondary bobbin 3, as shown in FIG. You may make it provide in the state made to have done. In this case, as shown in FIG. 9, for example, a high-voltage terminal integrally having a terminal fitting main body 710 having a substantially U-shaped cross section and a coil conductor winding portion 711 rising from one end in the width direction of the main body 710. As shown in FIG. 8, the main body 710 of the terminal fitting 7 is fitted to and held by the flange 310 at one end of the secondary bobbin 3 by using the side relay terminal fitting 7 so that the flange 3 of the secondary bobbin 3 is held.
The end face of the main body 710 along the outer end face of the
Contact with the head.
【００３９】図８のように構成すると、高圧コード接続
部１０４が径方向の外側に大きく突出することがないた
め、ケース５の膨出部５０１をなくすか、または該膨出
部の突出寸法を短くして点火コイルの外径寸法を縮小
し、点火コイルの小形化を図ることができる。With the configuration shown in FIG. 8, since the high-voltage cord connection portion 104 does not protrude significantly outward in the radial direction, the bulging portion 501 of the case 5 can be eliminated or the size of the bulging portion can be reduced. By shortening the length, the outer diameter of the ignition coil can be reduced, and the size of the ignition coil can be reduced.
【００４０】図８の実施例において、コイル導体巻き付
け部７１１に２次コイル４の端末部４Ａを巻き付けた
後、該コイル導体巻き付け部７１１を曲げて高圧コード
接続部１０４側に倒し、１次コイルの端末部が接続され
たリード端子１０９，１１０（リード端子１１０は図８
には図示せず。）を曲げていずれかの側に倒すようにす
ると、ケース５の膨出部をなくすか、または少なくとも
その突出寸法を短くして更に点火コイルの小形化を図る
ことができる。In the embodiment shown in FIG. 8, after winding the terminal portion 4A of the secondary coil 4 around the coil conductor winding portion 711, the coil conductor winding portion 711 is bent and lowered toward the high voltage cord connection portion 104, and the primary coil is wound. 8 are connected to the lead terminals 109 and 110 (the lead terminal 110 is
Not shown. ) Can be bent to either side to eliminate the bulging portion of the case 5 or at least reduce the protruding dimension of the case 5 to further reduce the size of the ignition coil.
【００４１】上記の実施例においては、２次コイル４の
一端４Ａ及び他端４Ｂをそれぞれ中継端子金具７及び８
に巻き付けるだけで接続しているが、２次コイルの一端
４Ａ及び他端４Ｂの絶縁被覆を除去して、該一端４Ａ及
び他端４Ｂをそれぞれ中継端子金具７及び８に半田付け
するようにしてもよい。In the above embodiment, one end 4A and the other end 4B of the secondary coil 4 are connected to the relay terminal fittings 7 and 8, respectively.
The secondary coil is connected by simply winding it around, but the insulating coating on one end 4A and the other end 4B of the secondary coil is removed, and the one end 4A and the other end 4B are soldered to the relay terminal fittings 7 and 8, respectively. Is also good.
【００４２】上記の実施例においては、高圧出力端子６
として木ネジ状のものを用いたが、この高圧出力端子は
高圧コード接続部１０４内に挿入された高圧コードの芯
線内に食い込んで抜けなくなるものであれば良く、必ず
しも木ネジ状のものでなくても良い。In the above embodiment, the high voltage output terminal 6
A high-voltage output terminal is used as long as it does not bite into the core wire of the high-voltage cord inserted into the high-voltage cord connection portion 104, and is not necessarily a wood screw. May be.
【００４３】上記の実施例では、１次コイルの最終レヤ
ーの１ターンを構成するコイル導体の一部を導体掛け止
め部に引っ掛けて外部に導出することにより接点部２０
１を形成しているが、１次ボビンの端部に接点部を構成
する端子金具を固定して、該端子金具に１次コイルのコ
イル導体を接続するようにしてもよい。In the above embodiment, a part of the coil conductor constituting one turn of the final layer of the primary coil is hooked on the conductor retaining portion and led out to the outside, so that the contact portion 20 is formed.
Although 1 is formed, a terminal fitting constituting a contact portion may be fixed to an end of the primary bobbin, and the coil conductor of the primary coil may be connected to the terminal fitting.
【００４４】上記の実施例では、１次ボビンの他端のつ
ば部の外端面に形成したリブ状の突起の先端をつば部の
外周から突出させることにより導体掛け止め部を構成し
たが、図１１に示したように、１次ボビン１の他端のつ
ば部の外周部に対の切り欠き部１２０，１２０を形成し
て、これらの切り欠き部の間の部分を導体掛け止め部１
１２としてもよい。In the above-described embodiment, the conductor retaining portion is formed by projecting the tip of a rib-like projection formed on the outer end surface of the collar portion at the other end of the primary bobbin from the outer periphery of the collar portion. As shown in FIG. 11, a pair of notches 120, 120 are formed in the outer peripheral portion of the collar portion at the other end of the primary bobbin 1, and the portion between these notches is connected to the conductor retaining portion 1
It may be set to 12.
【００４５】上記の実施例では、１次ボビンの一端に設
けたつば板部１０２に対の１次端子金具１０７及び１０
８を固定して、これらの１次端子金具に１次コイルの巻
き始め側の端末部及び巻き終り側の端末部を接続するよ
うにしたが、必ずしも対の１次端子金具を１次ボビンの
つば板部に取付ける必要はない。例えば上記の実施例に
おいて一方の１次端子金具１０７のみをつば板部１０２
に取り付け、他方の１次端子金具１０８は１次ボビンの
他端側のつば部１０３または２次ボビンの他端側のつば
部に取り付けるようにしても良い。１次端子金具１０８
を２次ボビンの他端側のつば部に設ける場合には、該１
次端子金具１０８を低圧側中継端子金具８の一部に一体
に形成するようにしても良い。更に対の１次端子金具の
双方をつば板部１０２と反対側（１次ボビンの他端また
は２次ボビンの他端）に設けるようにしても良い。In the above embodiment, the pair of primary terminal fittings 107 and 10 are attached to the brim plate 102 provided at one end of the primary bobbin.
8 is fixed so that the terminal on the winding start side and the terminal on the winding end of the primary coil are connected to these primary terminal fittings, but the pair of primary terminal fittings is not necessarily connected to the primary bobbin. It is not necessary to attach it to the brim plate. For example, in the above embodiment, only one of the primary terminal fittings 107 is fitted to the collar plate portion 102.
And the other primary terminal fitting 108 may be attached to the other end of the primary bobbin 103 or the other end of the secondary bobbin. Primary terminal fitting 108
Is provided in the collar portion on the other end side of the secondary bobbin,
The next terminal fitting 108 may be formed integrally with a part of the low-voltage relay terminal fitting 8. Further, both of the pair of primary terminal fittings may be provided on the side opposite to the brim plate portion 102 (the other end of the primary bobbin or the other end of the secondary bobbin).
【００４６】[0046]
【発明の効果】以上のように、本発明によれば、１次ボ
ビンのつば板部と反対側の端部に１次コイルにつながる
接点部を設けるとともに、２次ボビンの一端及び他端に
それぞれ２次コイルの一端及び他端につながる高圧側中
継端子金具及び低圧側中継端子金具を設けて、１次ボビ
ンを２次ボビンの内側に挿入した際に、高圧出力端子及
び接点部をそれぞれ高圧側中継端子及び低圧側中継端子
に接触させるように構成したので、１次コイルと２次コ
イルとをそれぞれ個別に巻回して組み合わせるだけで、
２次コイルの一端と高圧出力端子との間、及び２次コイ
ルの他端と１次コイルとの間の電気的な接続を簡単に行
うことができ、点火コイルの製造能率を向上させること
ができる。As described above, according to the present invention, the contact portion connected to the primary coil is provided at the end of the primary bobbin opposite to the brim plate portion, and at one end and the other end of the secondary bobbin. A high voltage side relay terminal fitting and a low voltage side relay terminal fitting respectively connected to one end and the other end of the secondary coil are provided, and when the primary bobbin is inserted inside the secondary bobbin, the high voltage output terminal and the contact portion are respectively set to the high voltage. It is configured to be in contact with the side relay terminal and the low-voltage side relay terminal, so simply winding and combining the primary coil and the secondary coil individually,
Electrical connection can be easily made between one end of the secondary coil and the high voltage output terminal and between the other end of the secondary coil and the primary coil, and the production efficiency of the ignition coil can be improved. it can.
【００４７】また請求項２または３に記載した発明によ
れば、１次コイルを構成するコイル導体の一部を１次ボ
ビンの外周部に設けた導体掛け止め部に引っ掛けて、該
コイル導体の導体掛け止め部の外面に沿う部分の絶縁被
覆を除去することにより接点部を構成するようにしたの
で、１次コイルのコイル導体そのものを利用して低圧側
中継端子を接触させる接点部を構成することができ、部
品点数を増加させることなく、また１次コイルの端末部
を接点に接続する手間を要することなく、１次コイルと
２次コイルとの接続部を構成することができる利点があ
る。According to the second or third aspect of the present invention, a part of the coil conductor constituting the primary coil is hooked on the conductor retaining portion provided on the outer peripheral portion of the primary bobbin, so that the coil conductor has Since the contact portion is configured by removing the insulating coating of the portion along the outer surface of the conductor retaining portion, the contact portion for contacting the low voltage side relay terminal using the coil conductor of the primary coil itself is configured. Therefore, there is an advantage that the connecting portion between the primary coil and the secondary coil can be configured without increasing the number of components and without requiring the trouble of connecting the terminal portion of the primary coil to the contact. .
【図１】本発明の実施例の全体的な構成を示したもの
で、図２のＡ−Ａ線に沿って断面して示した断面図であ
る。FIG. 1 is a cross-sectional view showing an overall configuration of an embodiment of the present invention, and is a cross-sectional view taken along line AA of FIG.
【図２】図１のＢ−Ｂ線断面図である。FIG. 2 is a sectional view taken along line BB of FIG.
【図３】（Ａ）は本発明の実施例で用いる１次ボビン及
び該１次ボビンに巻かれた１次コイルを示した正面縦断
面図である。（Ｂ）は（Ａ）の右側面図である。3 (A) is a positive side longitudinal sectional view showing a primary coil wound on the primary bobbin and the primary bobbin used in the embodiment of the present invention. (B) is a right side view of (A).
【図４】本発明の実施例における接点部と低圧側中継端
子金具との接触状態を示した斜視図である。FIG. 4 is a perspective view showing a contact state between a contact portion and a low-voltage side relay terminal fitting in the embodiment of the present invention.
【図５】（Ａ）は本発明の実施例で用いる２次ボビン及
び該２次ボビンに巻かれた２次コイルを示した正面縦断
面図である。（Ｂ）は（Ａ）の左側面図である。FIG. 5A is a front vertical sectional view showing a secondary bobbin used in an embodiment of the present invention and a secondary coil wound on the secondary bobbin. (B) is a left side view of (A).
【図６】本発明の実施例で用いる高圧側中継端子金具の
斜視図である。FIG. 6 is a perspective view of a high-voltage side relay terminal fitting used in the embodiment of the present invention.
【図７】（Ａ）及び（Ｂ）はそれぞれ本発明の実施例で
用いる高圧側中継端子金具の変形例を示した斜視図及び
上面図である。FIGS. 7A and 7B are a perspective view and a top view, respectively, showing a modification of the high-voltage side relay terminal fitting used in the embodiment of the present invention.
【図８】本発明の他の実施例の要部を示した縦断面図で
ある。FIG. 8 is a longitudinal sectional view showing a main part of another embodiment of the present invention.
【図９】図８の実施例で用いる高圧側中継端子金具の一
例を示した斜視図である。FIG. 9 is a perspective view showing an example of a high-voltage side relay terminal fitting used in the embodiment of FIG. 8;
【図１０】本発明の実施例の点火コイルの等価回路を示
した回路図である。FIG. 10 is a circuit diagram showing an equivalent circuit of the ignition coil according to the embodiment of the present invention.
【図１１】本発明の実施例で用いる導体掛け止め部の変
形例を示した断面図である。FIG. 11 is a cross-sectional view showing a modified example of the conductor retaining portion used in the embodiment of the present invention.
１ １次ボビン １０１ 胴部 １０２ つば板部 １０３ つば部 １０４ 高圧コード接続部 １０７ １次端子 １０８ １次端子 ２ １次コイル ２Ａ １次コイルの一端 ２Ｂ ２次コイルの一端 ２０１ 接点部 ３ ２次ボビン ４ ２次コイル ４Ａ ２次コイルの一端 ４Ｂ ２次コイルの他端 ５ ケース ６ 高圧端子。 ７ 低圧側中継端子金具 ８ 高圧側中継端子金具 DESCRIPTION OF SYMBOLS 1 Primary bobbin 101 Trunk part 102 Collar plate part 103 Collar part 104 High voltage cord connection part 107 Primary terminal 108 Primary terminal 2 Primary coil 2A One end of primary coil 2B One end of secondary coil 201 Contact part 3 Secondary bobbin 4 Secondary coil 4A One end of secondary coil 4B The other end of secondary coil 5 Case 6 High voltage terminal. 7 Low voltage side relay terminal fitting 8 High voltage side relay terminal fitting
Claims (3)
接続部を備えたつば板部を一端に有する１次ボビンと、
前記１次ボビンに巻回された１次コイルと、２次ボビン
と、該２次ボビンに巻回された２次コイルとを備え、前
記２次コイルの一端が前記高圧出力端子に電気的に接続
されている内燃機関用点火コイルにおいて、 前記１次コイルの端末部に直接または該１次コイルの一
部をなすコイル部分を介してつながる接点部が前記１次
ボビンの他端側に設けられ、 前記２次ボビンの一端に高圧側中継端子金具が取り付け
られて該高圧側中継端子金具に前記２次コイルの一端が
接続され、 前記２次ボビンの他端に低圧側中継端子金具が取り付け
られて該低圧側中継端子金具に前記２次コイルの他端が
接続され、 前記２次ボビンの内側に前記１次ボビンが挿入されて、
前記高圧出力端子及び接点部がそれぞれ前記高圧側中継
端子金具及び低圧側中継端子金具に接触させられている
ことを特徴とする内燃機関用点火コイル。A primary bobbin having at one end a flange plate portion having a high voltage cord connection portion to which a high voltage output terminal is attached;
A primary coil wound around the primary bobbin, a secondary bobbin, and a secondary coil wound around the secondary bobbin, one end of the secondary coil being electrically connected to the high voltage output terminal. In the connected internal combustion engine ignition coil, a contact portion connected directly to a terminal portion of the primary coil or via a coil portion forming a part of the primary coil is provided on the other end side of the primary bobbin. A high-voltage relay terminal is attached to one end of the secondary bobbin, one end of the secondary coil is connected to the high-voltage relay terminal, and a low-voltage relay terminal is attached to the other end of the secondary bobbin. The other end of the secondary coil is connected to the low voltage side relay terminal fitting, and the primary bobbin is inserted inside the secondary bobbin,
An ignition coil for an internal combustion engine, wherein the high-voltage output terminal and the contact portion are brought into contact with the high-voltage side relay terminal fitting and the low-voltage side relay terminal fitting, respectively.
け止め部が設けられて、前記１次コイルを構成するコイ
ル導体の一部が前記導体掛け止め部に引っ掛けられ、 前記導体掛け止め部に引っ掛けられたコイル導体の該導
体掛け止め部の外面に沿う部分の絶縁被覆が除去され
て、該絶縁被覆が除去された部分が前記接点部となって
いることを特徴とする請求項１に記載の内燃機関用点火
コイル。2. A conductor hooking portion is provided on an outer peripheral portion at the other end of the primary bobbin, and a part of a coil conductor constituting the primary coil is hooked on the conductor hooking portion, The insulating coating of a portion of the coil conductor hooked on the stopper along the outer surface of the conductor retaining portion is removed, and the portion from which the insulating coating is removed serves as the contact portion. 2. The ignition coil for an internal combustion engine according to 1.
ド接続部を備えたつば板部を一端に有し、他端に導体掛
け止め部を有する１次ボビンを用いて、該１次ボビンに
１次コイルを巻回していき、該１次コイルの最終レヤー
を巻回する際に該最終レヤーの１ターンを構成するコイ
ル導体の一部を前記導体掛け止め部に引っ掛けた後該最
終レヤーを巻き上げる１次コイル巻回工程と、 前記１次コイルの最終レヤーの１ターンを構成するコイ
ル導体の前記導体掛け止め部の外面に沿う部分の絶縁被
覆を除去して、該絶縁被覆が除去された部分を接点部と
する接点部形成工程と、 一端に高圧側中継端子金具を備え、他端に低圧側中継端
子金具を備えた２次ボビンを用いて、一端が前記高圧側
中継端子金具に接続され、他端が前記低圧側中継端子金
具に接続された２次コイルを該２次ボビンに巻回する２
次コイル巻回工程と、 前記２次ボビンの内側に前記１次ボビンを挿入して、前
記高圧出力端子及び接点部をそれぞれ前記高圧側中継端
子金具及び低圧側中継端子金具に接触させるコイル組立
工程とを行うことを特徴とする内燃機関用点火コイルの
製造方法。3. A primary bobbin having a brim plate portion provided with a high-voltage cord connection portion to which a high-voltage output terminal is attached at one end and having a conductor latching portion at the other end, is provided with a primary bobbin. When winding the final coil of the primary coil, a part of the coil conductor constituting one turn of the final layer is hooked on the conductor retaining portion when winding the final layer of the primary coil, and then the final layer is wound. A primary coil winding step, and removing a part of the coil conductor that constitutes one turn of the final layer of the primary coil along an outer surface of the conductor retaining portion, and removing the insulating coating. A contact portion forming step of using the contact portion as a contact portion, and using a secondary bobbin having a high-voltage side relay terminal fitting at one end and a low-voltage side relay terminal fitting at the other end, one end is connected to the high-voltage side relay terminal fitting. , The other end of the low-voltage side relay terminal fitting 2 for winding the connected secondary coil to the secondary bobbin
A next coil winding step; and a coil assembling step of inserting the primary bobbin inside the secondary bobbin and bringing the high voltage output terminal and the contact portion into contact with the high voltage side relay terminal fitting and the low voltage side relay terminal fitting, respectively. And a method for manufacturing an ignition coil for an internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05109136A JP3089891B2 (en) | 1993-05-11 | 1993-05-11 | Ignition coil for internal combustion engine and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05109136A JP3089891B2 (en) | 1993-05-11 | 1993-05-11 | Ignition coil for internal combustion engine and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06325954A JPH06325954A (en) | 1994-11-25 |
| JP3089891B2 true JP3089891B2 (en) | 2000-09-18 |
Family
ID=14502506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05109136A Expired - Lifetime JP3089891B2 (en) | 1993-05-11 | 1993-05-11 | Ignition coil for internal combustion engine and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3089891B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4552709B2 (en) * | 2005-03-22 | 2010-09-29 | 株式会社デンソー | Ignition coil and manufacturing method thereof |
| JP4683410B2 (en) * | 2005-03-30 | 2011-05-18 | 阪神エレクトリック株式会社 | Ignition coil for internal combustion engine |
| JP2007242802A (en) * | 2006-03-07 | 2007-09-20 | Kokusan Denki Co Ltd | Ignition coil |
| JP2009099689A (en) * | 2007-10-15 | 2009-05-07 | Denso Corp | Method of manufacturing coil body |
| JP5458962B2 (en) * | 2010-03-05 | 2014-04-02 | 株式会社デンソー | Ignition coil for internal combustion engine and method for manufacturing the same |
-
1993
- 1993-05-11 JP JP05109136A patent/JP3089891B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06325954A (en) | 1994-11-25 |
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