JPH08339930A - Ignition coil for internal combustion engine - Google Patents
Ignition coil for internal combustion engineInfo
- Publication number
- JPH08339930A JPH08339930A JP7168253A JP16825395A JPH08339930A JP H08339930 A JPH08339930 A JP H08339930A JP 7168253 A JP7168253 A JP 7168253A JP 16825395 A JP16825395 A JP 16825395A JP H08339930 A JPH08339930 A JP H08339930A
- Authority
- JP
- Japan
- Prior art keywords
- primary
- case
- coil
- combustion engine
- internal combustion
- 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
Links
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
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に
関し、特にケース内に一次コイル及び二次コイルを収容
すると共に合成樹脂を充填する点火コイルに係る。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 in which a primary coil and a secondary coil are housed in a case and a synthetic resin is filled.
【0002】[0002]
【従来の技術】内燃機関用点火コイルは、コアに一次コ
イル及び二次コイルが巻装されたもので、一次コイルは
コネクタを介して一次電流を制御する制御回路に接続さ
れ、二次コイルは高圧ターミナルを介して点火プラグに
接続される。例えば、特開平6−77066号公報に
は、ケース内に収容する第1のコアと、第1のコアに対
して所定の位置に配置し第1のコアと共に磁路を形成す
る第2のコアと、第2のコアに巻装する一次コイル及び
二次コイルとを備えた内燃機関用点火コイルにおいて、
第2のコアを内蔵し少くとも一次コイルを巻装する一次
ボビンと、一次ボビンに連結し、一次コイルの巻線を接
続する一次ターミナルを設けた連結部と、この連結部に
連結し、少くとも一次ターミナルに接続するコネクタタ
ーミナルを設けたコネクタ部とを一体的に形成して一次
コイルアセンブリを構成し、一次ボビン、連結部及びコ
ネクタ部によって郭成される空間に第1のコアの少くと
も一部が位置するように、一次コイルアセンブリをケー
ス内に配設するようにした点火コイルが提案されてい
る。同公報に記載の点火コイルによれば、部品点数を低
減し得ると共に、ケース内に収容された第1のコアと一
次ボビンに内蔵された第2のコアとの接合を容易且つ適
切に行なうことができ、点火コイルとして良好な組付性
を確保することができる。2. Description of the Related Art An ignition coil for an internal combustion engine has a core wound with a primary coil and a secondary coil. The primary coil is connected to a control circuit for controlling a primary current through a connector, and the secondary coil is It is connected to a spark plug via a high voltage terminal. For example, in Japanese Patent Laid-Open No. 6-77066, a first core accommodated in a case and a second core arranged at a predetermined position with respect to the first core to form a magnetic path together with the first core. And an ignition coil for an internal combustion engine comprising a primary coil and a secondary coil wound around a second core,
A primary bobbin that has a second core built-in and that winds at least a primary coil; a connecting part that is connected to the primary bobbin and that has a primary terminal that connects the winding of the primary coil; A primary coil assembly is formed by integrally forming a connector part having a connector terminal connected to the primary terminal, and at least a first core is provided in a space defined by the primary bobbin, the connecting part and the connector part. Ignition coils have been proposed in which the primary coil assembly is arranged in a case so that a part thereof is located. According to the ignition coil described in the publication, the number of parts can be reduced, and the first core housed in the case and the second core housed in the primary bobbin can be easily and appropriately joined. As a result, it is possible to secure a good assembling property for the ignition coil.
【0003】また、同公報には一次コイルアセンブリの
連結部と一次ボビンとの間に保持部を形成し、この保持
部に第2のコアの端面を露呈させると共に、保持部の、
第2のコアの端面の周縁に保持片を形成し、第2のコア
の端面に接するように永久磁石を配置し保持片で保持す
る構造が開示されている。これにより、第2のコアの端
面の所定位置に確実に永久磁石を配設することができる
ので、第1のコアと第2のコアとの間に永久磁石を介装
することによる所期の出力増加を確保することができ
る。Further, in this publication, a holding portion is formed between the connecting portion of the primary coil assembly and the primary bobbin, the end surface of the second core is exposed to this holding portion, and
A structure is disclosed in which a holding piece is formed on the peripheral edge of the end surface of the second core, a permanent magnet is arranged so as to be in contact with the end surface of the second core, and the holding piece is held. As a result, the permanent magnet can be surely arranged at the predetermined position on the end surface of the second core, so that the permanent magnet can be provided between the first core and the second core. It is possible to secure an increase in output.
【0004】[0004]
【発明が解決しようとする課題】上記公報に記載の点火
コイルにおいては、一次ターミナルを構成するターミナ
ル6a,6bは連結部14の面に対し垂直に立設されて
おり、これらに一次コイルの巻線が巻きつけられて半田
等によって接合されるように構成されている。しかし、
このような構造では接合作業に時間を要するので、一層
の改良が望まれていた。例えば、リード部材を折り返し
て巻線を挾持し、これらを圧接しながらスポット溶接
し、あるいはフュージョン溶接することとすれば作業が
容易となるが、上記公報に記載の構造では治具を配置す
ることができない。In the ignition coil described in the above publication, the terminals 6a and 6b forming the primary terminal are erected perpendicularly to the surface of the connecting portion 14, and the primary coil is wound around them. The wire is wound and joined by solder or the like. But,
Since such a structure requires a long time for the joining work, further improvement has been desired. For example, the work is easy if the lead member is folded back and the winding is sandwiched, and spot welding or fusion welding is performed while pressing them, but in the structure described in the above publication, a jig is arranged. I can't.
【0005】これに対し、前記連結部に作業穴を形成す
ると共に、この開口面に平行にリード部材を配置すれば
溶接が可能となるが、そうすると作業穴が形成された状
態で樹脂モールドされることになる。即ち、ケース内に
例えばエポキシ樹脂が充填される際、当然作業穴にもエ
ポキシ樹脂が侵入し固化されるが、連結部の材質(例え
ば、ポリブチレンテレフタレート)と異なるため、熱膨
張係数の相違により充填樹脂に亀裂(所謂、割れ)が生
ずるおそれがある。特にこの部分は電気的接続部である
ので、絶縁性の確保が必要であり、上記のような亀裂の
発生は好ましくない。On the other hand, if a working hole is formed in the connecting portion and a lead member is arranged in parallel with this opening surface, welding can be performed. Then, resin molding is performed with the working hole formed. It will be. That is, when the case is filled with, for example, an epoxy resin, the epoxy resin naturally intrudes into the work hole and is solidified. However, since the material of the connecting portion (for example, polybutylene terephthalate) is different, the thermal expansion coefficient is different. A crack (so-called crack) may occur in the filled resin. In particular, since this portion is an electrical connection portion, it is necessary to ensure the insulating property, and the above-mentioned cracking is not preferable.
【0006】そこで、本発明は、ケース内において一次
コイルの巻線を一次ターミナルに容易且つ確実に接続し
得ると共に、絶縁性を維持し得る内燃機関用点火コイル
を提供することを目的とする。Therefore, an object of the present invention is to provide an ignition coil for an internal combustion engine, which can easily and surely connect the winding of the primary coil to the primary terminal in the case and can maintain the insulation.
【0007】[0007]
【課題を解決するための手段】上記の目的を達成するた
め、本発明は、請求項1に記載のように、ケース内に一
次コイル及び二次コイルを収容し、前記ケース内に合成
樹脂を充填して成る内燃機関用点火コイルにおいて、前
記一次コイルを巻装し前記ケース内に収容する一次ボビ
ンと、該一次ボビンに連結し前記ケース内に配置する連
結部と、該連結部に支持すると共に前記一次コイルの巻
線を接続する一次ターミナルを備え、前記連結部に、前
記一次ターミナルの少くとも先端部と対向する位置に作
業穴を形成すると共に、前記ケース内に、前記一次ボビ
ン及び前記連結部を前記ケース内に収容し所定の位置に
配置したとき前記作業穴に嵌合する閉塞部材を設けるこ
ととしたものである。尚、前記一次ボビンと前記連結部
は一体的に形成することができるが、別体で形成し接合
することとしてもよい。In order to achieve the above object, the present invention, as set forth in claim 1, stores a primary coil and a secondary coil in a case, and a synthetic resin in the case. In an ignition coil for an internal combustion engine, which is filled up, a primary bobbin around which the primary coil is wound and accommodated in the case, a connecting portion which is connected to the primary bobbin and is disposed inside the case, and which is supported by the connecting portion. A primary terminal for connecting the winding of the primary coil is provided, and a working hole is formed in the connecting portion at a position facing at least a tip portion of the primary terminal, and in the case, the primary bobbin and the A closing member that fits into the working hole when the connecting portion is housed in the case and arranged at a predetermined position is provided. Although the primary bobbin and the connecting portion can be integrally formed, they may be separately formed and joined together.
【0008】前記閉塞部材は、請求項2に記載のよう
に、前記ケースの内面に一体的に突出形成して構成する
とよい。According to a second aspect of the present invention, the closing member may be formed so as to integrally project with the inner surface of the case.
【0009】また、請求項3に記載のように、前記一次
ターミナルを、前記作業穴の開口面と略平行に配置する
リード部材で構成し、該リード部材の先端部を折り返し
て前記一次コイルの巻線を挾持するように構成するとよ
い。Further, as described in claim 3, the primary terminal is composed of a lead member arranged substantially parallel to the opening surface of the working hole, and the tip portion of the lead member is folded back to form the primary coil. It may be configured to hold the winding.
【0010】[0010]
【作用】本発明の内燃機関用点火コイルにおいては、一
次ボビンに巻回された一次コイルの巻線が、連結部に支
持された一次ターミナルの先端部に接続される。一次コ
イルの巻線と一次ターミナルの先端部は、作業穴を介し
て例えば溶接によって容易且つ確実に接合される。例え
ば、請求項3に記載のように一次ターミナルがリード部
材で構成され、その先端部が折り返され、この間に一次
コイルの巻線が挾持された後溶接が行なわれることによ
り、確実な接合状態となる。In the ignition coil for an internal combustion engine of the present invention, the winding of the primary coil wound around the primary bobbin is connected to the tip portion of the primary terminal supported by the connecting portion. The winding of the primary coil and the tip of the primary terminal are easily and reliably joined to each other through the working hole, for example, by welding. For example, as described in claim 3, the primary terminal is composed of a lead member, the tip portion is folded back, and the winding of the primary coil is clamped during this, and welding is performed, so that a reliable joining state is obtained. Become.
【0011】そして、ケース内に一次ボビン及び連結部
(並びに一次コイル及び二次コイル)が収容され所定の
位置に配置されると、例えば請求項2に記載のようにケ
ースの内面に突出形成された閉塞部材が、連結部の作業
穴に嵌合し、両者間は微小な間隙を残すのみとなる。従
って、ケース内に合成樹脂が充填されても微小間隙に侵
入するのみであり、また、ケースと閉塞部材が同一の材
質であれば間隙は殆ど変化しないので、樹脂の亀裂を懸
念する必要はない。而して、内燃機関用点火コイルが構
成され、一次コイルに供給される一次電流が断続する
と、磁束変化が生じ、二次コイルに高電圧が誘起される
が、安定した絶縁性が維持される。Then, when the primary bobbin and the connecting portion (and the primary coil and the secondary coil) are accommodated in the case and arranged at a predetermined position, for example, the case is formed so as to project on the inner surface of the case. The closing member fits into the working hole of the connecting portion, leaving only a minute gap between them. Therefore, even if the case is filled with synthetic resin, it only penetrates into the minute gap, and if the case and the closing member are made of the same material, the gap hardly changes, so there is no need to worry about cracking of the resin. . Thus, when the ignition coil for the internal combustion engine is configured and the primary current supplied to the primary coil is intermittent, a change in magnetic flux occurs and a high voltage is induced in the secondary coil, but stable insulation is maintained. .
【0012】[0012]
【実施例】以下、本発明の内燃機関用点火コイルの望ま
しい実施例を図面を参照して説明する。図13は本発明
の一実施例に係る内燃機関用点火コイルの組付状態を示
すもので、本実施例のケースはアッパケース30とロア
ケース40が接合されて成る。図1乃至図3はアッパケ
ース30側の構成を示すもので、一次コイルアセンブリ
10に二次コイルアセンブリ20が組み付けられ、これ
らがアッパケース30内に収容されると、図1に示す構
造となる。本実施例は同時点火方式(ダブル点火方式と
も呼ばれる)の内燃機関用点火コイルに係り、図2に示
すようにI字状のコア2及び口字状のコア3を有し、こ
れらによって略日字状の磁路が構成される。コア2は一
次コイルアセンブリ10に内蔵されており、コア3はア
ッパケース30に一体的に収容され、一部を除き埋設さ
れている。一次コイルアセンブリ10は図7乃至図10
に示すように構成されており、一次コイル12が巻装さ
れる前の状態を図4乃至図6に示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of an ignition coil for an internal combustion engine of the present invention will be described below with reference to the drawings. FIG. 13 shows an assembled state of an internal combustion engine ignition coil according to one embodiment of the present invention. The case of this embodiment is formed by joining an upper case 30 and a lower case 40. 1 to 3 show the structure on the upper case 30 side. When the secondary coil assembly 20 is assembled to the primary coil assembly 10 and these are housed in the upper case 30, the structure shown in FIG. 1 is obtained. . The present embodiment relates to an ignition coil for an internal combustion engine of a simultaneous ignition system (also called a double ignition system), which has an I-shaped core 2 and a U-shaped core 3 as shown in FIG. A V-shaped magnetic path is formed. The core 2 is built in the primary coil assembly 10, and the core 3 is integrally housed in the upper case 30 and is embedded except for a part. The primary coil assembly 10 is shown in FIGS.
4 and 6 show the state before the primary coil 12 is wound.
【0013】アッパケース30は図11に示す平面形状
を呈する合成樹脂、例えばポリブチレンテレフタレート
(PBT)製の筐体で、図1乃至図3に示すようにイン
サート樹脂成形によってコア3が一体的に収容され、コ
ア3の内側に形成されたアッパケース30の凹部30h
に、一次コイルアセンブリ10及び二次コイルアセンブ
リ20が収容されている。アッパケース30は図3の右
側の面(ロアケース40と接合される面)が開放し開口
部30aが形成され、アッパケース30の一つの側面に
は図1に示すように開口部30bが形成されている。こ
の開口部30bに対向する側面には高圧コネクタ部31
が延出形成され、一方の高圧ターミナル7(図1には頭
部のみが表れている)が収容されている。他の側面には
一次コイルアセンブリ10の支持部15が嵌合する開口
部30cが形成され、これの反対側にフランジ部33が
延出形成されている。フランジ部33にはインサート樹
脂成形によりカラー34が埋設されている。The upper case 30 is a housing made of synthetic resin having a planar shape shown in FIG. 11, for example, polybutylene terephthalate (PBT), and the core 3 is integrally formed by insert resin molding as shown in FIGS. The recess 30h of the upper case 30 that is housed and formed inside the core 3
The primary coil assembly 10 and the secondary coil assembly 20 are housed in the housing. The upper case 30 has an opening 30a formed by opening the surface on the right side of FIG. 3 (the surface joined to the lower case 40), and an opening 30b is formed on one side surface of the upper case 30 as shown in FIG. ing. A high voltage connector portion 31 is provided on a side surface facing the opening portion 30b.
Is extended and accommodates one high-voltage terminal 7 (only the head is shown in FIG. 1). An opening 30c into which the supporting portion 15 of the primary coil assembly 10 is fitted is formed on the other side surface, and a flange portion 33 is formed to extend on the opposite side thereof. A collar 34 is embedded in the flange portion 33 by insert resin molding.
【0014】コア3は図2に示すように略矩形の環状鉄
心で、無方向性珪素鋼板が複数積層されて成るが、方向
性珪素鋼板を用いることとしてもよい。コア2と接合す
るコア3の接合部3a,3bは、接合部3aが若干内側
に延出し幅広に形成され、接合部3bには凹部が形成さ
れており、何れもアッパケース30の内側に露呈してい
る。一方、コア2は、図2に示すように一端部が拡幅さ
れた接合部2aと他端部が拡幅された接合部2bを有す
る略四角柱状の鉄心である。このコア2は、圧延方向が
その軸方向である方向性珪素鋼板が複数積層されて成
る。The core 3 is a substantially rectangular annular core as shown in FIG. 2 and is formed by laminating a plurality of non-oriented silicon steel plates, but a grain-oriented silicon steel plate may be used. The joint portions 3a and 3b of the core 3 to be joined to the core 2 are formed such that the joint portion 3a extends slightly inward and wide and the joint portion 3b has a recessed portion, both of which are exposed inside the upper case 30. are doing. On the other hand, the core 2 is a substantially quadrangular prism-shaped iron core having a joint portion 2a with one end portion widened and a joint portion 2b with the other end portion widened as shown in FIG. The core 2 is formed by laminating a plurality of grain-oriented silicon steel sheets whose rolling direction is the axial direction thereof.
【0015】一次コイルアセンブリ10に関しては、イ
ンサート樹脂成形によりコア2並びに一次ターミナル6
a,6b及びコネクタ用のターミナル6c,6d(及び
これらの間の導体部)が一体的に収容され、図4乃至図
10に示すように一次ボビン11、保持部13、連結部
14、支持部15及びコネクタ部16が形成されてい
る。一次ボビン11はコア2の回りに形成され、コア2
の両端近傍に夫々鍔部11a,11bが形成されてい
る。鍔部11aは図5及び図6に明らかなように、対向
する二辺に突起11cが形成されている。また、他の対
向する二辺の各々に一対の突起11dが形成され、これ
ら一対の突起11dの端面が、後述する二次ボビン21
の中空部に嵌合するように構成されている。突起11c
は一次コイルアセンブリ10の軸方向の移動を規制する
もので、二次ボビン21の中空部に形成された突起21
c(図2)に係止される。後述する樹脂部9を形成する
際には、一対の突起11d間に形成された溝11e(図
6)を介して、二次ボビン21の中空部内に樹脂が流入
する。一次ボビン11は更に、図5に示すように鍔部1
1aからコア2の接合部2b迄を被覆する被覆部11f
を有する。Regarding the primary coil assembly 10, the core 2 and the primary terminal 6 are formed by insert resin molding.
a, 6b and the terminals 6c, 6d for the connector (and the conductor portion between them) are integrally housed, and as shown in FIGS. 4 to 10, the primary bobbin 11, the holding portion 13, the connecting portion 14, the supporting portion. 15 and a connector portion 16 are formed. The primary bobbin 11 is formed around the core 2 and
Collar portions 11a and 11b are formed near both ends of the flanges, respectively. As is apparent from FIGS. 5 and 6, the collar portion 11a has protrusions 11c formed on two opposing sides. Further, a pair of protrusions 11d is formed on each of the other two opposite sides, and the end faces of the pair of protrusions 11d have secondary bobbin 21 to be described later.
It is configured to fit in the hollow portion of the. Protrusion 11c
Is for restricting the movement of the primary coil assembly 10 in the axial direction. The protrusion 21 is formed in the hollow portion of the secondary bobbin 21.
c (FIG. 2). When forming the resin portion 9 described later, the resin flows into the hollow portion of the secondary bobbin 21 via the groove 11e (FIG. 6) formed between the pair of protrusions 11d. The primary bobbin 11 is further provided with a collar 1 as shown in FIG.
A covering portion 11f for covering from 1a to the joint portion 2b of the core 2
Have.
【0016】一次ボビン11に隣接して一体的に形成さ
れる保持部13は、永久磁石5をコア2の接合部2aに
当接するように保持するもので、図2に示すように接合
部2aの長手方向の端面が露呈するように形成され、図
4に示すように凹部13bが形成されると共に、凹部1
3bの長手方向の両側端に保持片13aが形成されてい
る(図2,図5参照)。これにより、永久磁石5が図4
の上方側から凹部13bに挿入されると、保持片13a
により所定の位置に保持されコア2の接合部2aに密着
する。尚、永久磁石5は一次コイル12の通電時にコア
2,3に形成される磁束の方向と反対の方向となるよう
に配置される。また、保持部13には図5に示すように
鍔部11b方向に突出する凸部13cが形成されてい
る。更に、図10に示すように、保持部13には壁部1
3d,13f,13gが立設されており、これらによっ
て平面視コ字状の壁部が形成され、永久磁石5の一次ボ
ビン11側に対して遮蔽するように配置されている。The holding portion 13 integrally formed adjacent to the primary bobbin 11 holds the permanent magnet 5 so as to abut against the joint portion 2a of the core 2, and as shown in FIG. Is formed so as to expose the end face in the longitudinal direction thereof, and the recess 13b is formed as shown in FIG.
Holding pieces 13a are formed on both side ends of 3b in the longitudinal direction (see FIGS. 2 and 5). As a result, the permanent magnet 5 becomes
When it is inserted into the recess 13b from above, the holding piece 13a
Is held at a predetermined position by and is brought into close contact with the joint portion 2a of the core 2. The permanent magnet 5 is arranged so as to be in the direction opposite to the direction of the magnetic flux formed in the cores 2 and 3 when the primary coil 12 is energized. Further, as shown in FIG. 5, the holding portion 13 is formed with a convex portion 13c protruding in the direction of the collar portion 11b. Further, as shown in FIG.
3d, 13f, and 13g are provided upright, and a wall portion having a U-shape in a plan view is formed by these and arranged so as to shield the permanent magnet 5 from the primary bobbin 11 side.
【0017】以上のように、保持部13は長手方向が一
次ボビン11の軸に対し直交するように形成され、その
一側端部(図4の下方の側端部)から一次ボビン11の
軸と平行に延出する板状の連結部14が形成され、更に
連結部14の板面に対し直交する方向、即ち保持部13
に保持される永久磁石5の板面と平行な方向に延出する
支持部15が形成されている、従って、これら保持部1
3、連結部14及び支持部15によって、図4に示すよ
うにコ字状断面が形成されている。尚、連結部14を一
次ボビン11等とは別体に形成して接合することとして
もよい。As described above, the holding portion 13 is formed such that the longitudinal direction thereof is orthogonal to the axis of the primary bobbin 11, and the axis of the primary bobbin 11 is extended from one side end portion (lower side end portion in FIG. 4) of the holding portion 13. A plate-shaped connecting portion 14 extending parallel to the connecting portion 14 is formed, and a direction orthogonal to the plate surface of the connecting portion 14, that is, the holding portion 13 is formed.
A support portion 15 is formed which extends in a direction parallel to the plate surface of the permanent magnet 5 held by the holding magnet 1.
3, the connecting portion 14 and the supporting portion 15 form a U-shaped cross section as shown in FIG. The connecting portion 14 may be formed separately from the primary bobbin 11 and the like and joined together.
【0018】連結部14には、図5及び図8に明らかな
ように略正方形の作業穴14a,14bが形成されてお
り、これらの近傍に一次コイル12の巻線を案内する三
角柱状の案内部14c,14dが延出形成されている。
更に、支持部15に連続してコネクタ部16が形成され
ており、一次ターミナル6a,6bの基部が支持部15
に植設され、一次ターミナル6a,6bが連結部14の
板面上に支持されると共に、コネクタ部16にコネクタ
用のターミナル6c,6dが植設され、一次ターミナル
6aとターミナル6cとを一体的に接続する導体(図示
省略)、及び一次ターミナル6bとターミナル6dを一
体的に接続する導体(図示省略)が支持部15及びコネ
クタ部16に埋設されている。一次ターミナル6a,6
bは例えば金属製のリード部材で形成され、巻線の接続
前は先端部が折り返され、図4に示すようにJ字状に屈
曲されており、各先端部の平面部分が作業穴14a,1
4bに対向するように配置される。As is apparent from FIGS. 5 and 8, the connecting portion 14 is provided with substantially square working holes 14a and 14b, and a triangular prism-shaped guide for guiding the winding of the primary coil 12 in the vicinity thereof. The parts 14c and 14d are formed to extend.
Further, a connector portion 16 is formed continuously with the support portion 15, and the base portions of the primary terminals 6a and 6b are provided at the support portion 15
And the primary terminals 6a, 6b are supported on the plate surface of the connecting portion 14, and the connector terminals 16c, 6d are also implanted in the connector portion 16 to integrally connect the primary terminals 6a and 6c. A conductor (not shown) for connecting to the terminal and a conductor (not shown) for integrally connecting the primary terminal 6b and the terminal 6d are embedded in the support portion 15 and the connector portion 16. Primary terminal 6a, 6
b is formed of, for example, a metal lead member, the tip portion is folded back before connecting the winding, and is bent in a J-shape as shown in FIG. 4, and the flat portion of each tip portion is the working hole 14a, 1
It is arranged so as to face 4b.
【0019】そして、図7乃至図10に示すように、一
次ボビン11に一次コイル12が巻装されて一次コイル
アセンブリ10が構成される。即ち、鍔部11a,11
b間に一次コイル12の巻線が二層もしくは四層に巻回
される。一次コイル12の両端部の巻線12a,12b
は案内部14c,14dに案内されて導出され、夫々一
次ターミナル6a,6bの先端部に挾持され、圧力を加
えながらフュージョン溶接される。尚、一般的にフュー
ジョン溶接は、加圧力を用いることなく接合部と溶接材
を溶融させて接合する方法であるのに対し、本実施例で
は一次ターミナル6a(6b)の折り返し部に巻線を挾
持して、接合部を上下から電極で加圧しながらジュール
熱によって溶融させて接合することとしており、スポッ
ト溶接と同様であり、厳密な意味ではフュージョン溶接
ではないが、何れにしても、一次ターミナル6a,6b
に対し上下から電極を当接する必要がある。Then, as shown in FIGS. 7 to 10, the primary coil 12 is wound around the primary bobbin 11 to form the primary coil assembly 10. That is, the collar portions 11a, 11
The winding of the primary coil 12 is wound in two layers or four layers between b. Windings 12a, 12b at both ends of the primary coil 12
Are guided out of the guide portions 14c, 14d, held by the tip portions of the primary terminals 6a, 6b, respectively, and fusion welded while applying pressure. Incidentally, in general, fusion welding is a method of melting and joining a joint portion and a welding material without using a pressing force, whereas in the present embodiment, a winding is provided at a folded portion of the primary terminal 6a (6b). It is held by sandwiching it and melting it with Joule heat while pressing it from above and below with electrodes, and it is similar to spot welding, it is not fusion welding in the strict sense, but in any case, it is the primary terminal. 6a, 6b
On the other hand, it is necessary to contact the electrodes from above and below.
【0020】本実施例においては、前述のように作業穴
14a,14bを介して一次ターミナル6a,6bと巻
線12a,12bが溶接され、しかもこの溶接作業は、
後述するアッパケース30への組み付け前に行われるの
で作業が容易である。尚、コネクタ16はアッパケース
30外にて外部コネクタ(図示せず)と電気的に接続さ
れ、ターミナル6cはバッテリ(図示せず)に接続さ
れ、ターミナル6dは制御回路、通称イグナイタ(図示
せず)に接続される。In this embodiment, as described above, the primary terminals 6a, 6b and the windings 12a, 12b are welded through the working holes 14a, 14b.
The work is easy because it is performed before the assembling to the upper case 30 described later. The connector 16 is electrically connected to an external connector (not shown) outside the upper case 30, the terminal 6c is connected to a battery (not shown), and the terminal 6d is a control circuit, commonly called an igniter (not shown). ) Is connected to.
【0021】保持部13に装着される永久磁石5は長方
形で、その一辺の幅は図2の左右方向に表れているよう
にコア2の接合部2aの積層端面の一辺の幅より若干大
きい値に設定され、他辺の幅は図3の左右方向に表れて
いるように接合部2aの積層端面の他辺の幅より若干大
きい値に設定されている。従って、永久磁石5の板面の
面積はコア2の接合部2aの積層端面の面積より大とな
っており、図3に示すように端部5bがコア2の接合部
2aより外方に延出している。この永久磁石5として
は、例えば残留磁束密度が大で減磁されにくいサマリウ
ム−コバルト(Sm−Co)系金属の焼結体の希土類マ
グネットが用いられる。尚、上述の説明では一次コイル
12を巻装する前に永久磁石5を保持部13に装着する
こととしたが、その順序は逆でもよい。The permanent magnet 5 mounted on the holding portion 13 has a rectangular shape, and the width of one side thereof is slightly larger than the width of one side of the laminated end surface of the joint portion 2a of the core 2 as shown in the left-right direction of FIG. The width of the other side is set to a value slightly larger than the width of the other side of the laminated end surface of the joining portion 2a as shown in the left-right direction in FIG. Therefore, the area of the plate surface of the permanent magnet 5 is larger than the area of the laminated end surface of the joint portion 2a of the core 2, and the end portion 5b extends outward from the joint portion 2a of the core 2 as shown in FIG. I have put it out. As the permanent magnet 5, for example, a rare earth magnet of a sintered body of samarium-cobalt (Sm-Co) -based metal, which has a large residual magnetic flux density and is hard to be demagnetized, is used. In the above description, the permanent magnet 5 is attached to the holding portion 13 before winding the primary coil 12, but the order may be reversed.
【0022】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2
1は軸方向に所定間隔毎に複数の鍔部21aが形成され
た断面略矩形の樹脂製筒体であり、これらの鍔部21a
間に形成される複数の溝内に、二次コイル22の巻線が
図2の上方から下方へ順次巻回されている。本実施例は
同時点火方式の点火コイルであるので、二次ボビン21
の鍔部21aの両端が幅広の鍔部21d,21eとさ
れ、これらの鍔部21d,21eに、図1に示すように
二次ターミナル23,24が植設されている。The secondary coil assembly 20 is formed by winding a secondary coil 22 around a secondary bobbin 21. Secondary bobbin 2
Reference numeral 1 denotes a resin cylindrical body having a substantially rectangular cross section in which a plurality of collar portions 21a are formed at predetermined intervals in the axial direction. These collar portions 21a
The windings of the secondary coil 22 are sequentially wound from the upper side to the lower side in FIG. 2 in a plurality of grooves formed therebetween. Since the present embodiment is a simultaneous ignition type ignition coil, the secondary bobbin 21
Both ends of the collar portion 21a are wide collar portions 21d and 21e, and secondary terminals 23 and 24 are planted in these collar portions 21d and 21e as shown in FIG.
【0023】二次ボビン21の一方の端面には、一次ボ
ビン11の凸部13c(図5,図6)が嵌合する凹部2
1f(図2)が形成されている。而して、前述の一次コ
イルアセンブリ10の一次ボビン11部分が二次ボビン
21の中空部に挿入されると、図2に示すように鍔部1
1aの突起11cが二次ボビン21の突起21cを乗り
越えて係止されると共に、凸部13cが凹部21fに嵌
合される。これにより、二次ボビン21に対し一次ボビ
ン11が両端で支持され、一次ボビン11と二次ボビン
21との間の軸方向及び幅方向の相対移動が規制される
ので安定した接合状態となる。On one end surface of the secondary bobbin 21, the concave portion 2 into which the convex portion 13c (FIGS. 5 and 6) of the primary bobbin 11 is fitted.
1f (FIG. 2) is formed. Then, when the primary bobbin 11 portion of the primary coil assembly 10 is inserted into the hollow portion of the secondary bobbin 21, the collar portion 1 as shown in FIG.
The projection 11c of 1a rides over the projection 21c of the secondary bobbin 21 and is locked, and the projection 13c is fitted into the recess 21f. As a result, the primary bobbin 11 is supported at both ends with respect to the secondary bobbin 21, and relative movement in the axial direction and the width direction between the primary bobbin 11 and the secondary bobbin 21 is restricted, so that a stable joining state is achieved.
【0024】図1に示すように、両端の鍔部21d,2
1eに植設された二次ターミナル23,24に、二次コ
イル22の巻線の両端が巻き付けられ、これらに夫々中
継ターミナル25,26が接続されている。一方の二次
ターミナル23には中継ターミナル25の一端が接合さ
れ、その他端は一方の高圧ターミナル7に接続されてい
る。他方の二次ターミナル24には中継ターミナル26
が接合され、図3に示すように二次ボビン21の軸に略
平行に延出しており、後述するようにロアケース40が
アッパケース30に組み付けられる際に、この中継ター
ミナル26が、ロアケース40に設けられた他方の高圧
ターミナル8(図13参照)に接続される。As shown in FIG. 1, the collar portions 21d and 2 on both ends are formed.
Both ends of the winding of the secondary coil 22 are wound around the secondary terminals 23 and 24 planted in 1e, and relay terminals 25 and 26 are connected to these, respectively. One end of the relay terminal 25 is joined to the one secondary terminal 23, and the other end is connected to the one high voltage terminal 7. The other secondary terminal 24 has a relay terminal 26
3 and extends substantially parallel to the axis of the secondary bobbin 21 as shown in FIG. 3, and when the lower case 40 is assembled to the upper case 30 as described later, this relay terminal 26 is attached to the lower case 40. It is connected to the other high-voltage terminal 8 (see FIG. 13) provided.
【0025】また、アッパケース30内には、図11に
示すように一対の矩形の突出部30p,30qが一体的
に形成されている。これらの突出部30p,30qは本
発明にいう閉塞部材を構成するもので、連結部14の作
業穴14a,14bに嵌合するように、これらの外形よ
り小さく形成され、突出高さは連結部14の厚さと略等
しい寸法に設定されている。更に、永久磁石5の端部5
bを収容し得る矩形の溝30dが形成されており、凹部
30h側に壁部30eが立設されている。また、溝30
dの両側で、保持部13の壁部13f,13gと対向す
る位置に一対の切欠30f,30gが形成されている。A pair of rectangular protrusions 30p and 30q are integrally formed in the upper case 30 as shown in FIG. These protrusions 30p and 30q constitute the closing member according to the present invention, and are formed smaller than their outer shapes so as to fit into the working holes 14a and 14b of the connecting portion 14, and the protruding height is the connecting portion. The thickness is set to be approximately equal to the thickness of 14. Furthermore, the end 5 of the permanent magnet 5
A rectangular groove 30d capable of accommodating b is formed, and a wall portion 30e is provided upright on the concave portion 30h side. Also, the groove 30
On both sides of d, a pair of notches 30f and 30g are formed at positions facing the walls 13f and 13g of the holding portion 13.
【0026】而して、上記の構成になる点火コイルの各
部品の組付に当たっては、先ず一次コイルアセンブリ1
0に対し二次コイルアセンブリ20が組み付けられ、図
3に示すようにアッパケース30内に収容され、アッパ
ケース30の開口部30cに一次コイルアセンブリ10
の支持部15が嵌合される。これにより、一次コイルア
センブリ10の保持部13、連結部14及び支持部15
によって構成されるコ字状断面部分にコア3の接合部3
a部分が嵌合すると、連結部14がコア3の板面に当接
し、永久磁石5がコア3の接合部3aの内側の積層端面
に対向し、コア2の接合部2bがコア3の凹部3bに嵌
合して各々の積層端面が当接する。従って、コア2、コ
ア3及び永久磁石5は確実に所定の位置関係となる。When assembling the parts of the ignition coil having the above construction, first, the primary coil assembly 1 is assembled.
0, the secondary coil assembly 20 is assembled and housed in the upper case 30 as shown in FIG. 3, and the primary coil assembly 10 is inserted into the opening 30 c of the upper case 30.
The support portion 15 of is fitted. Accordingly, the holding portion 13, the connecting portion 14, and the supporting portion 15 of the primary coil assembly 10 are provided.
The joint portion 3 of the core 3 is formed on the U-shaped cross section formed by
When the a portion is fitted, the connecting portion 14 contacts the plate surface of the core 3, the permanent magnet 5 faces the inner end face of the joint 3 a of the core 3, and the joint portion 2 b of the core 2 is the concave portion of the core 3. 3b is fitted and each laminated end surface abuts. Therefore, the core 2, the core 3, and the permanent magnet 5 are surely in a predetermined positional relationship.
【0027】このとき、永久磁石5は保持部13の凹部
13b内に収容され端部5aが保持片13aによって保
持されているので、コア2,3の各々の接合部2a,3
a間の所定位置に配置されることとなる。また、永久磁
石5の端部5bは溝30d内に収容され、保持部13の
壁部13f,13gがアッパケース30の切欠30f,
30gに嵌合されるので、永久磁石5の端部5bは壁部
30eのみならず壁部13d,13f,13gによって
二重に遮蔽される。At this time, since the permanent magnet 5 is housed in the concave portion 13b of the holding portion 13 and the end portion 5a is held by the holding piece 13a, the joint portions 2a, 3 of the cores 2, 3 respectively.
It will be arranged at a predetermined position between a. Further, the end portion 5b of the permanent magnet 5 is housed in the groove 30d, and the wall portions 13f and 13g of the holding portion 13 are formed in the notches 30f and
Since it is fitted to 30 g, the end portion 5 b of the permanent magnet 5 is doubly shielded not only by the wall portion 30 e but also by the wall portions 13 d, 13 f, 13 g.
【0028】また、図12に拡大して示すように、連結
部14の作業穴14a(14b)内にアッパケース30
の突出部30p(30q)が嵌合し、これによって作業
穴14a(14b)が閉塞される。このとき、同図のよ
うに両者間に微小の間隙が形成されてもよい。このよう
に組み付けられた後、中継ターミナル25の先端と高圧
ターミナル7が電気的に接続される。As shown in an enlarged view in FIG. 12, the upper case 30 is placed in the working hole 14a (14b) of the connecting portion 14.
The projecting portions 30p (30q) are fitted, and the working holes 14a (14b) are closed thereby. At this time, a minute gap may be formed between the two as shown in FIG. After being assembled in this way, the tip of the relay terminal 25 and the high voltage terminal 7 are electrically connected.
【0029】そして、アッパケース30には図13に示
すようにロアケース40が接合される。このロアケース
40は蓋体部40aと、これに対し垂直方向に延出し高
圧コネクタ部を構成する筒体部40bから成り、これら
が合成樹脂によって一体的に形成されている。筒体部4
0bの中心軸に高圧ターミナル8がインサート成形され
ており、一方の先端に形成されたボス部がロアケース4
0のアッパケース30との接合面側に露出している。而
して、アッパケース30にロアケース40が組付けられ
る際に、高圧ターミナル8に中継ターミナル26が電気
的に接続される。このように組付けられた後、アッパケ
ース30の開口部30bからアッパケース30内の空間
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9が形成され
る。これにより、一次コイル12及び二次コイル22が
含侵固着されると共に二次コイル22の出力高電圧に耐
え得る絶縁性が確保される。A lower case 40 is joined to the upper case 30 as shown in FIG. The lower case 40 includes a lid portion 40a and a tubular portion 40b that extends in a direction perpendicular to the lid portion 40a and constitutes a high-voltage connector portion, and these are integrally formed of synthetic resin. Cylindrical part 4
The high-voltage terminal 8 is insert-molded on the central axis of 0b, and the boss formed at one end is the lower case 4
It is exposed on the side of the joint surface with the upper case 30 of No. 0. Thus, when the lower case 40 is assembled to the upper case 30, the relay terminal 26 is electrically connected to the high voltage terminal 8. After being assembled in this way, a thermosetting synthetic resin, for example, an epoxy resin is filled into the space inside the upper case 30 from the opening 30b of the upper case 30 and is cured to form a resin portion as shown by a dotted line in FIG. 9 is formed. As a result, the primary coil 12 and the secondary coil 22 are impregnated and fixed, and the insulation that can withstand the high output voltage of the secondary coil 22 is secured.
【0030】この場合において、二次ボビン21の中空
部内には、鍔部11aの突起11d間の溝11e、及び
鍔部11a,11bと中空部との間隙を介して樹脂が充
填されるので、中空部内に空隙が形成されることなく確
実に樹脂部9が形成される。特に、連結部14の作業穴
14a,14bはアッパケース30の突出部30p,3
0qによって閉塞されており、両者間の間隙は微小であ
り、また連結部14と突出部材30p,30qが同じ材
質であるので、この間隙に充填された樹脂に、使用時の
熱膨張によって亀裂が生ずるといったことはない。従っ
て、一次ターミナル6a,6bと一次コイル12の巻線
12a,12bとの接続部に対し安定した絶縁性が維持
される。しかも、被覆部11f等によりコア2,3の各
辺のエッジ部が樹脂部9と直接接触しないように構成さ
れており、また永久磁石5の端部5bは溝30d内に収
容され、更に壁部13d,13f,13gによって遮蔽
されているので、厳しい環境条件においてもこれらによ
って亀裂の伝達が阻止され、樹脂部9に割れが生ずるこ
とはない。In this case, the resin is filled in the hollow portion of the secondary bobbin 21 through the groove 11e between the projections 11d of the collar portion 11a and the gap between the collar portions 11a and 11b and the hollow portion. The resin portion 9 is reliably formed without forming voids in the hollow portion. In particular, the work holes 14a and 14b of the connecting portion 14 are formed in the projecting portions 30p and 3 of the upper case 30.
It is closed by 0q, the gap between them is very small, and since the connecting portion 14 and the projecting members 30p, 30q are made of the same material, the resin filled in this gap is not cracked due to thermal expansion during use. It never happens. Therefore, stable insulation is maintained for the connection between the primary terminals 6a and 6b and the windings 12a and 12b of the primary coil 12. In addition, the edge portions of the respective sides of the cores 2 and 3 are constructed so as not to come into direct contact with the resin portion 9 by the covering portion 11f and the like, and the end portion 5b of the permanent magnet 5 is housed in the groove 30d, and the wall Since they are shielded by the portions 13d, 13f, 13g, the transmission of cracks is blocked by these even under severe environmental conditions, and the resin portion 9 is not cracked.
【0031】而して、同時点火方式の内燃機関用点火コ
イルが構成され、内燃機関(図示せず)に装着され、高
圧ターミナル8が直接一つの点火プラグ(図示せず)に
接続されると共に、高圧ターミナル7がハイテンション
コード(図示せず)を介して他の点火プラグ(図示せ
ず)に接続される。そして、一次コイル12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3
0乃至40kvの高電圧が発生する。この高電圧は二次
ターミナル23,24、中継ターミナル25,27及び
高圧ターミナル7,8を介して各点火プラグに出力され
る。而して、各点火プラグに対し、個別に高電圧が印加
され、各々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, a simultaneous ignition type ignition coil for an internal combustion engine is constructed, mounted on an internal combustion engine (not shown), and the high-voltage terminal 8 is directly connected to one ignition plug (not shown). The high voltage terminal 7 is connected to another spark plug (not shown) via a high tension cord (not shown). Then, when the primary current of the primary coil 12 is interrupted, a counter electromotive force is induced in the secondary coil 22.
A high voltage of 0 to 40 kv is generated. This high voltage is output to each spark plug through the secondary terminals 23 and 24, the relay terminals 25 and 27, and the high voltage terminals 7 and 8. Thus, a high voltage is individually applied to each spark plug, a spark discharge is generated in each electrode portion, and the compressed air-fuel mixture in each combustion chamber (not shown) is ignited.
【0032】以上のように、本実施例は二つの高圧ター
ミナル7,8を備えた同時点火方式の点火コイルに係る
ものであるが、勿論通常の内燃機関用点火コイルに適用
することもでき、この場合には高圧ターミナル7,8の
何れか一方を用いることとすればよい。As described above, the present embodiment relates to the simultaneous ignition type ignition coil provided with the two high voltage terminals 7 and 8, but of course it can be applied to a normal internal combustion engine ignition coil. In this case, either one of the high voltage terminals 7 and 8 may be used.
【0033】[0033]
【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、請求項1に記載の
内燃機関用点火コイルにおいては、一次ターミナルの少
くとも先端部と対向する位置に作業穴を形成すると共
に、ケース内に、一次ボビン及び連結部をケース内に収
容し所定の位置に配置したとき作業穴に嵌合する閉塞部
材を設けるように構成されているので、作業穴を介して
一次ターミナルに一次コイルの巻線を容易且つ確実に接
続することができる。しかも、ケース内に合成樹脂が充
填されても作業穴部分に亀裂が生ずることなく安定した
絶縁性を維持することができる。Since the present invention is constructed as described above, it has the following effects. That is, in the ignition coil for an internal combustion engine according to claim 1, the working hole is formed at a position facing at least the tip portion of the primary terminal, and the primary bobbin and the connecting portion are housed in the case. Since the closing member that fits into the working hole when arranged at the predetermined position is provided, the winding of the primary coil can be easily and surely connected to the primary terminal through the working hole. Moreover, even if the case is filled with the synthetic resin, stable insulating properties can be maintained without causing cracks in the work holes.
【0034】また、請求項2に記載の内燃機関用点火コ
イルにおいては、閉塞部材をケースの内面に一体的に突
出形成するように構成されているので、ケース内に一次
ボビン及び連結部を配置するだけで作業穴を閉塞するこ
とができ、良好な作業性が得られる。Further, in the ignition coil for the internal combustion engine according to the second aspect, since the closing member is formed so as to integrally project from the inner surface of the case, the primary bobbin and the connecting portion are arranged in the case. The work hole can be closed by simply doing so, and good workability can be obtained.
【0035】更に、請求項3に記載の内燃機関用点火コ
イルにおいては、一次コイルの巻線を一次ターミナルに
作業穴を介して容易に接続することができるので良好な
作業性が得られる。Further, in the ignition coil for the internal combustion engine according to the third aspect, the winding of the primary coil can be easily connected to the primary terminal through the working hole, so that good workability can be obtained.
【図1】本発明の一実施例に係る内燃機関用点火コイル
の平面図である。FIG. 1 is a plan view of an ignition coil for an internal combustion engine according to an embodiment of the present invention.
【図2】本発明の一実施例に係る内燃機関用点火コイル
の横断面図である。FIG. 2 is a cross-sectional view of an internal combustion engine ignition coil according to an embodiment of the present invention.
【図3】本発明の一実施例に係る内燃機関用点火コイル
の縦断面図である。FIG. 3 is a vertical sectional view of an ignition coil for an internal combustion engine according to an embodiment of the present invention.
【図4】本発明の一実施例に係る内燃機関用点火コイル
における一次コイルアセンブリの一次コイル巻回前の状
態を示す部分断面正面図である。FIG. 4 is a partial cross-sectional front view showing a state before winding the primary coil of the primary coil assembly in the ignition coil for the internal combustion engine according to the embodiment of the present invention.
【図5】本発明の一実施例に係る内燃機関用点火コイル
における一次コイルアセンブリの一次コイル巻回前の状
態を示す平面図である。FIG. 5 is a plan view showing a state before winding the primary coil of the primary coil assembly in the ignition coil for the internal combustion engine according to the embodiment of the present invention.
【図6】本発明の一実施例に係る内燃機関用点火コイル
における一次コイルアセンブリの一次コイル巻回前の状
態を示す側面図である。FIG. 6 is a side view showing a state before winding the primary coil of the primary coil assembly in the ignition coil for the internal combustion engine according to the embodiment of the present invention.
【図7】本発明の一実施例に係る内燃機関用点火コイル
における一次コイルアセンブリの正面図である。FIG. 7 is a front view of a primary coil assembly of an ignition coil for an internal combustion engine according to an embodiment of the present invention.
【図8】本発明の一実施例に係る内燃機関用点火コイル
における一次コイルアセンブリの平面図である。FIG. 8 is a plan view of a primary coil assembly in an internal combustion engine ignition coil according to an embodiment of the present invention.
【図9】本発明の一実施例に係る内燃機関用点火コイル
における一次コイルアセンブリの側面図である。FIG. 9 is a side view of the primary coil assembly in the ignition coil for the internal combustion engine according to the embodiment of the present invention.
【図10】本発明の一実施例に係る内燃機関用点火コイ
ルにおける一次コイルアセンブリの背面図である。FIG. 10 is a rear view of the primary coil assembly of the ignition coil for the internal combustion engine according to the embodiment of the present invention.
【図11】本発明の一実施例に係る内燃機関用点火コイ
ルにおけるアッパケースの平面図である。FIG. 11 is a plan view of an upper case in an internal combustion engine ignition coil according to an embodiment of the present invention.
【図12】本発明の一実施例に係る内燃機関用点火コイ
ルにおける連結部の作業穴近傍を拡大して示す断面図で
ある。FIG. 12 is an enlarged cross-sectional view showing the vicinity of a work hole of a connecting portion in an internal combustion engine ignition coil according to an embodiment of the present invention.
【図13】本発明の一実施例に係る内燃機関用点火コイ
ルにおけるアッパケースとロアケースを接合する状態を
示す側面図である。FIG. 13 is a side view showing a state in which the upper case and the lower case in the internal combustion engine ignition coil according to the embodiment of the present invention are joined together.
2 コア, 2a,2b 接合部 3 コア, 3a,3b 接合部 5 永久磁石 6a,6b 一次ターミナル 6c,6d ターミナル 7,8 高圧ターミナル 9 樹脂部 10 一次コイルアセンブリ 11 一次ボビン, 11a,11b 鍔部 12 一次コイル 13 保持部 14 連結部 14a,14b 作業穴 15 支持部 16 コネクタ部 20 二次コイルアセンブリ 21 二次ボビン 22 二次コイル 23,24 二次ターミナル 25,26 中継ターミナル 30 アッパケース 31 高圧コネクタ部 33 フランジ部 40 ロアケース 40a 蓋体部 40b 筒体部 2 core, 2a, 2b joint part 3 core, 3a, 3b joint part 5 permanent magnet 6a, 6b primary terminal 6c, 6d terminal 7, 8 high voltage terminal 9 resin part 10 primary coil assembly 11 primary bobbin, 11a, 11b collar part 12 Primary coil 13 Holding part 14 Connecting part 14a, 14b Working hole 15 Support part 16 Connector part 20 Secondary coil assembly 21 Secondary bobbin 22 Secondary coil 23,24 Secondary terminal 25,26 Relay terminal 30 Upper case 31 High voltage connector part 33 flange part 40 lower case 40a lid part 40b cylindrical part
Claims (3)
収容し、前記ケース内に合成樹脂を充填して成る内燃機
関用点火コイルにおいて、前記一次コイルを巻装し前記
ケース内に収容する一次ボビンと、該一次ボビンに連結
し前記ケース内に配置する連結部と、該連結部に支持す
ると共に前記一次コイルの巻線を接続する一次ターミナ
ルを備え、前記連結部に、前記一次ターミナルの少くと
も先端部と対向する位置に作業穴を形成すると共に、前
記ケース内に、前記一次ボビン及び前記連結部を前記ケ
ース内に収容し所定の位置に配置したとき前記作業穴に
嵌合する閉塞部材を設け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, wherein a primary coil and a secondary coil are housed in a case and a synthetic resin is filled in the case, and the primary coil is wound and housed in the case. A bobbin, a connecting portion connected to the primary bobbin and arranged in the case, and a primary terminal supporting the connecting portion and connecting a winding of the primary coil are provided, and the connecting portion has a smaller number of the primary terminals. And a closing member that forms a working hole at a position facing the tip portion and that fits into the working hole when the primary bobbin and the connecting portion are housed in the case and arranged at a predetermined position in the case. An ignition coil for an internal combustion engine, comprising:
体的に突出形成した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 ignition coil for an internal combustion engine according to claim 1, wherein the closing member is integrally formed on the inner surface of the case so as to project therefrom.
口面と略平行に配置するリード部材で構成し、該リード
部材の先端部を折り返して前記一次コイルの巻線を挾持
するようにした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。3. The primary terminal is composed of a lead member arranged substantially parallel to an opening surface of the working hole, and a tip portion of the lead member is folded back to hold a winding of the primary coil. The ignition coil for an internal combustion engine according to claim 1.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7168253A JPH08339930A (en) | 1995-06-09 | 1995-06-09 | Ignition coil for internal combustion engine |
US08/657,544 US5764124A (en) | 1995-06-09 | 1996-06-04 | Ignition coil for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7168253A JPH08339930A (en) | 1995-06-09 | 1995-06-09 | Ignition coil for internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08339930A true JPH08339930A (en) | 1996-12-24 |
Family
ID=15864591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7168253A Pending JPH08339930A (en) | 1995-06-09 | 1995-06-09 | Ignition coil for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08339930A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006278379A (en) * | 2005-03-28 | 2006-10-12 | Hanshin Electric Co Ltd | Ignition coil for internal combustion engine |
JP2008010686A (en) * | 2006-06-30 | 2008-01-17 | Hanshin Electric Co Ltd | Ignition coil for internal combustion engine and its assembling method |
JP2011176167A (en) * | 2010-02-25 | 2011-09-08 | Denso Corp | Ignition coil for internal combustion engine |
JP2011187532A (en) * | 2010-03-05 | 2011-09-22 | Denso Corp | Ignition coil for internal combustion engine and method of manufacturing the same |
JP2013115397A (en) * | 2011-12-01 | 2013-06-10 | Diamond Electric Mfg Co Ltd | Ignition coil for internal combustion engine and manufacturing method of ignition coil |
JP2014212223A (en) * | 2013-04-19 | 2014-11-13 | ダイヤモンド電機株式会社 | Ignition coil for internal combustion engine |
JP2015002255A (en) * | 2013-06-14 | 2015-01-05 | ダイヤモンド電機株式会社 | Ignition coil for internal combustion engine |
-
1995
- 1995-06-09 JP JP7168253A patent/JPH08339930A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006278379A (en) * | 2005-03-28 | 2006-10-12 | Hanshin Electric Co Ltd | Ignition coil for internal combustion engine |
JP2008010686A (en) * | 2006-06-30 | 2008-01-17 | Hanshin Electric Co Ltd | Ignition coil for internal combustion engine and its assembling method |
JP2011176167A (en) * | 2010-02-25 | 2011-09-08 | Denso Corp | Ignition coil for internal combustion engine |
JP2011187532A (en) * | 2010-03-05 | 2011-09-22 | Denso Corp | Ignition coil for internal combustion engine and method of manufacturing the same |
JP2013115397A (en) * | 2011-12-01 | 2013-06-10 | Diamond Electric Mfg Co Ltd | Ignition coil for internal combustion engine and manufacturing method of ignition coil |
JP2014212223A (en) * | 2013-04-19 | 2014-11-13 | ダイヤモンド電機株式会社 | Ignition coil for internal combustion engine |
JP2015002255A (en) * | 2013-06-14 | 2015-01-05 | ダイヤモンド電機株式会社 | Ignition coil for internal combustion engine |
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