JP5836547B2 - Ignition device for internal combustion engine - Google Patents

Ignition device for internal combustion engine Download PDF

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JP5836547B2
JP5836547B2 JP2010176192A JP2010176192A JP5836547B2 JP 5836547 B2 JP5836547 B2 JP 5836547B2 JP 2010176192 A JP2010176192 A JP 2010176192A JP 2010176192 A JP2010176192 A JP 2010176192A JP 5836547 B2 JP5836547 B2 JP 5836547B2
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ignition
coil
ignition coil
case
ignition device
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JP2012036787A (en
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拓志 西村
拓志 西村
山田 修司
修司 山田
勇人 小柴
勇人 小柴
義之 福村
義之 福村
尚紀 片岡
尚紀 片岡
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Diamond Electric Manufacturing Co Ltd
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Description

本発明は、内燃機関用点火装置に関するものである。 The present invention relates to an internal combustion engine ignition device.

従来よりリーン燃焼や成層燃焼では空燃比にばらつきがあることや点火プラグのくすぶりによって起こるミスファイアを防ぐため、複数の点火コイルを用いて多重点火を行う点火装置がある。しかし、点火装置は熱膨張係数の異なる部材で構成されているため、温度変化によってクラックが発生することが知られている。このような状況において、樹脂絶縁材の熱膨張係数を小さくする方法がいくつか提案されている。この代表的な例として、例えば特開平11―040443号公報(以下「特許文献1」)のような構成とすることが知られている。 2. Description of the Related Art Conventionally, there are ignition devices that perform multiple ignition using a plurality of ignition coils in order to prevent misfire caused by variations in the air-fuel ratio in lean combustion or stratified combustion and smoldering of an ignition plug. However, since the ignition device is composed of members having different thermal expansion coefficients, it is known that cracks occur due to temperature changes. In such a situation, several methods for reducing the thermal expansion coefficient of the resin insulating material have been proposed. As a typical example, it is known to have a configuration as disclosed in, for example, Japanese Patent Application Laid-Open No. 11-040443 (hereinafter “Patent Document 1”).

上記特許文献1では、内燃機関の点火装置に印加する高電圧を発生する内燃機関用点火装置であって、前記点火装置内に充填される樹脂絶縁材と、前記点火装置内に収容されるイグナイタとを備え、前記樹脂絶縁材の熱膨張係数と前記イグナイタのモールド樹脂の熱膨張係数とをほぼ等しくする。また、前記樹脂絶縁材の熱膨張係数を小さくする。さらに、前記樹脂絶縁材は50重量%以上のフィラーが配合されている。 In the above Patent Document 1, an internal combustion engine ignition device that generates a high voltage to be applied to an internal combustion engine ignition device, a resin insulating material filled in the ignition device, and an igniter accommodated in the ignition device And the thermal expansion coefficient of the resin insulating material and the thermal expansion coefficient of the mold resin of the igniter are made substantially equal. Further, the coefficient of thermal expansion of the resin insulating material is reduced. Further, the resin insulating material contains 50% by weight or more filler.

また、前記点火装置の構成部材の熱膨張係数をほぼ等しくする。さらに、前記点火装置の互いに隣接する構成部材の熱膨張係数の差を小さくしたことを特徴とする内燃機関用点火装置が提案されている。 Further, the thermal expansion coefficients of the constituent members of the ignition device are made substantially equal. Furthermore, there has been proposed an internal combustion engine ignition device in which the difference in coefficient of thermal expansion between adjacent components of the ignition device is reduced.

特開平11−040443号公報Japanese Patent Laid-Open No. 11-040443

しかしながら、上記従来の点火装置では次のような問題が生じている。即ち、特許文献1の点火装置では、樹脂絶縁材に50重量%以上のフィラーを配合することで、樹脂絶縁材の熱膨張係数とイグナイタのモールド樹脂の熱膨張係数とを等しくし、温度変化を繰り返してもイグナイタおよびイグナイタ周囲の樹脂絶縁材にクラックが発生することを抑制しているが、点火装置を構成する部材の熱膨張係数に応じて樹脂絶縁材の配合を変化させ、点火装置の構成部材と樹脂絶縁材の熱膨張係数を等しくすることは、フィラーの増加で樹脂の流動性が悪くなりケース内細部まで樹脂が到達しづらくなり生産性が悪くなる。さらに、複数の点火コイルを備える点火装置ではクラックの波及によって双方の点火コイルへのリーク電流も防がなくてはならない。 However, the above conventional ignition device has the following problems. That is, in the ignition device of Patent Document 1, by blending 50% by weight or more of the filler with the resin insulation material, the thermal expansion coefficient of the resin insulation material is made equal to the thermal expansion coefficient of the igniter mold resin, and the temperature change is made. Even if it is repeated, cracks are suppressed from occurring in the igniter and the resin insulation around the igniter, but the composition of the resin insulation is changed according to the thermal expansion coefficient of the members constituting the ignition device. Making the thermal expansion coefficients of the member and the resin insulating material equal makes the resin fluidity worse due to an increase in filler, making it difficult for the resin to reach the details in the case, resulting in poor productivity. Furthermore, in an ignition device having a plurality of ignition coils, leakage current to both ignition coils must be prevented by the spread of cracks.

本発明は上記課題に鑑みなされたもので、複数の点火コイルを備える点火装置において、温度変化によって発生したクラックが双方の点火コイルへ波及するのを防ぐことで、双方の点火コイルへのリーク電流を防ぐことができ、さらに容易に組み立てられる信頼性の高い点火装置を提供することを目標とする。 The present invention has been made in view of the above problems, and in an ignition device including a plurality of ignition coils, a leakage current to both ignition coils is prevented by preventing cracks generated by temperature changes from spreading to both ignition coils. It is an object of the present invention to provide a reliable ignition device that can prevent the above-described problem and can be easily assembled.

上記課題を解決するために本発明は次のような構成とする。即ち、1次コイル,2次コイル及び鉄芯の構成部品を具備する第1の点火コイルと、前記1次コイル,前記2次コイル及び前記鉄芯と同等の構成部品を具備する第2の点火コイルと、電力及び電気信号を中継するコネクタと、点火プラグへ高電圧を供給する高圧端子と、前記双方の点火コイルが収容されるものであって且つ前記高電圧を整流するダイオード群が底面に配置されたケースと、前記第1の点火コイルと前記第2の点火コイルとの間に形成された2枚の隔壁と、前記ダイオード群を形成するリード線と、前記ケースのコイル収容部に充填されたモールド樹脂と、を備えた点火装置において、前記2枚の隔壁の少なくとも一方には、前記リード線を配索させたスリットが形成されることを特徴とする点火装置とする。
In order to solve the above problems, the present invention is configured as follows. That is, a first ignition coil having primary coil, secondary coil, and iron core components, and a second ignition having the same components as the primary coil, secondary coil, and iron core. a coil, a connector that relays power and electrical signals, the high voltage terminal for supplying a high voltage to the spark plug, diode group for rectifying and said high voltage ignition coil a shall be housed in the both the bottom surface The case, the two partitions formed between the first ignition coil and the second ignition coil, the lead wires forming the diode group, and the coil housing portion of the case are filled In the ignition device comprising the molded resin, a slit in which the lead wire is routed is formed in at least one of the two partition walls.

上記構成においては、前記2枚の隔壁は、前記ケースの底面から前記ケースの開口面に向かって形成される構成としてもよい。また、前記2枚の隔壁は、各々が前記第1の点火コイル又は前記第2の点火コイルの前記鉄芯に接して形成される構成としてもよい。
In the above configuration, the two partition walls may be formed from the bottom surface of the case toward the opening surface of the case. The two partition walls may be formed so as to be in contact with the iron core of the first ignition coil or the second ignition coil.

本発明によると、温度変化によって発生したクラックが双方の点火コイルに波及するのを防ぎ、双方の点火コイルへのリーク電流を防ぐことができ、さらに容易に組み立てられる信頼性の高い点火装置が実現できる。
According to the present invention, it is possible to prevent cracks caused by temperature changes from spreading to both ignition coils, prevent leakage current to both ignition coils, and realize a highly reliable ignition device that can be easily assembled. it can.

本発明の第1の実施例とする点火装置の斜視図である。1 is a perspective view of an ignition device according to a first embodiment of the present invention. 図1の点火装置の矢印(A)方向から見たB-B断面図である。It is BB sectional drawing seen from the arrow (A) direction of the ignition device of FIG. 本発明の第1の実施例とする点火装置のケースの斜視図である。1 is a perspective view of a case of an ignition device according to a first embodiment of the present invention. 本発明の第1の実施例とする点火装置のケースを上方向から見た図である。FIG. 2 is a view of the ignition device case according to the first embodiment of the present invention as viewed from above.

以下に本発明の実施の形態を示す実施例を図1乃至図4に基づいて説明する。 An example showing the embodiment of the present invention will be described below with reference to FIGS.

本発明の実施例とする点火装置の斜視図を図1に、図1の点火装置の矢印(A)方向から見たB-B断面図を図2に、点火装置のケースの斜視図を図3に、点火装置のケースを上方向から見た図を図4に示す。 FIG. 1 is a perspective view of an ignition device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line BB of the ignition device shown in FIG. 1, and FIG. 3 is a perspective view of a case of the ignition device. FIG. 4 shows a view of the ignition device case as viewed from above.

図1乃至4において、点火装置70の外形を形成するケース50は開口面を一面備える箱型とした一体成形で形成されている。また、当該ケース50には当該点火装置70を図示しないエンジンヘッドに取り付け固定するためのケース固定部52を当該ケース50の開口面と略垂直面に2箇所形成している。さらに、当該ケース50の底面には、2次電圧を点火プラグに供給する高圧端子36を備えるための高圧タワー54がエンジン上部に形成されたプラグホール内に向かって突出するように形成されている。 1 to 4, the case 50 forming the outer shape of the ignition device 70 is formed by integral molding in a box shape having one opening surface. Further, the case 50 is formed with two case fixing portions 52 on a plane substantially perpendicular to the opening surface of the case 50 for fixing the ignition device 70 to an engine head (not shown). Further, a high voltage tower 54 for providing a high voltage terminal 36 for supplying a secondary voltage to the ignition plug is formed on the bottom surface of the case 50 so as to protrude into a plug hole formed in the upper part of the engine. .

また、前記ケース50のコイル収容部には、第1の点火コイル80と第2の点火コイル90を備え、当該第1の点火コイル80及び当該第2の点火コイル90はそれぞれ個別に複数の薄板を積層して構成された鉄芯30と、当該鉄芯30の外周に樹脂で形成された1次ボビンの外周に1次巻線を50ターン前後巻き回した1次コイル10と、当該1次コイル10の外周に樹脂で形成された2次ボビンの外周に2次巻線を3000ターン前後巻き回した2次コイル20とから構成されている。さらに、当該2次コイル20の高圧側に図示しない2次高圧端子を備え、当該2次コイル20の低圧側に図示しない2次低圧端子を備えている。 The coil housing portion of the case 50 includes a first ignition coil 80 and a second ignition coil 90, and each of the first ignition coil 80 and the second ignition coil 90 is individually provided with a plurality of thin plates. A primary coil 10 in which a primary winding is wound about 50 turns around the outer periphery of a primary bobbin formed of resin on the outer periphery of the iron core 30, and the primary The secondary coil 20 is formed by winding a secondary winding around 3000 turns on the outer periphery of a secondary bobbin formed of resin on the outer periphery of the coil 10. Further, a secondary high voltage terminal (not shown) is provided on the high voltage side of the secondary coil 20, and a secondary low voltage terminal (not shown) is provided on the low voltage side of the secondary coil 20.

また、前記ケース50内側底面に前記第1の点火コイル80と前記第2の点火コイル90の各々にケース側2次高圧端子38を備え、前記第1の点火コイル80の当該ケース側2次高圧端子38と前記第1の点火コイル80の前記2次高圧端子は電気的に接続し、前記第2の点火コイル90の当該ケース側2次高圧端子38と前記第2の点火コイル90の前記2次高圧端子は電気的に接続している。さらに、前記ケース50内には前記第1の点火コイル80及び前記第2の点火コイル90へ1次電圧及び点火信号を供給するイグナイタ34を前記第1の点火コイル80及び前記第2の点火コイル90に各々に備え、当該イグナイタ34は前記1次コイル10及び前記2次低圧端子に電気的に接続されている。 Further, a case side secondary high voltage terminal 38 is provided on each of the first ignition coil 80 and the second ignition coil 90 on the inner bottom surface of the case 50, and the case side secondary high voltage of the first ignition coil 80 is provided. The terminal 38 and the secondary high voltage terminal of the first ignition coil 80 are electrically connected, and the case side secondary high voltage terminal 38 of the second ignition coil 90 and the second high voltage terminal of the second ignition coil 90 are connected. The next high voltage terminal is electrically connected. Further, in the case 50, an igniter 34 for supplying a primary voltage and an ignition signal to the first ignition coil 80 and the second ignition coil 90 is provided in the first ignition coil 80 and the second ignition coil. The igniter 34 is electrically connected to the primary coil 10 and the secondary low voltage terminal.

また、前記ケース50の側面にバッテリ及びECUとを接続するコネクタ32を前記第1の点火コイル80及び前記第2の点火コイル90に各々に備え、当該それぞれのコネクタ32の一端は前記第1の点火コイル80及び前記第2の点火コイル90の前記1次コイル10と電気的に接続され、当該それぞれのコネクタ32の他端は当該バッテリ及び当該ECUと電気的に接続している。さらに、前記ケース50内側底面には、前記第1の点火コイル80及び前記第2の点火コイル90のどちらか一方の2次電圧が他方の点火コイルに流れるのを阻止するために前記第1の点火コイル80には第1のダイオード群40a,40b,40cを備え、前記第2の点火コイル90には第2のダイオード群42a,42b,42cを備えている。 Each of the first ignition coil 80 and the second ignition coil 90 is provided with a connector 32 for connecting a battery and an ECU on the side surface of the case 50, and one end of each connector 32 is connected to the first ignition coil 80. The primary coil 10 of the ignition coil 80 and the second ignition coil 90 is electrically connected, and the other end of each connector 32 is electrically connected to the battery and the ECU. Further, the case 50 has an inner bottom surface on which the first voltage of either the first ignition coil 80 or the second ignition coil 90 is prevented from flowing to the other ignition coil. The ignition coil 80 includes first diode groups 40a, 40b, and 40c, and the second ignition coil 90 includes second diode groups 42a, 42b, and 42c.

また、前記第1のダイオード群40a,40b,40c及び前記第2のダイオード群42a,42b,42cにはリード線44を備え、前記第1のダイオード群40a,40b,40c及び前記第2のダイオード群42a,42b,42cの当該リード線44を半田付けで接続することで前記第1のダイオード群40a,40b,40c及び前記第2のダイオード群42a,42b,42cを各々直列に3つ繋げて構成されている。さらに、前記第1のダイオード40a及び前記第2のダイオード42aのアノード端子側の前記リード線44は、1つに結合され、前記高圧端子36と電気的に接続されている。 The first diode group 40a, 40b, 40c and the second diode group 42a, 42b, 42c are provided with a lead wire 44, and the first diode group 40a, 40b, 40c and the second diode group are provided. By connecting the lead wires 44 of the groups 42a, 42b, and 42c by soldering, the first diode groups 40a, 40b, and 40c and the second diode groups 42a, 42b, and 42c are connected in series, respectively. It is configured. Further, the lead wires 44 on the anode terminal side of the first diode 40a and the second diode 42a are coupled together and electrically connected to the high voltage terminal 36.

また、前記第1のダイオード40cのカソード端子側の前記リード線44は前記第1の点火コイル80の前記ケース側2次高圧端子38と電気的に接続され、前記第2のダイオード42cのカソード端子側の前記リード線44は前記第2の点火コイル90の前記ケース側2次高圧端子38と電気的に接続されている。さらに、前記ケース50内側底面には前記第1のダイオード群40a,40b,40c及び前記第2のダイオード群42a,42b,42cを備えるための溝部56を形成している。 The lead wire 44 on the cathode terminal side of the first diode 40c is electrically connected to the case side secondary high voltage terminal 38 of the first ignition coil 80, and the cathode terminal of the second diode 42c. The side lead wire 44 is electrically connected to the case side secondary high voltage terminal 38 of the second ignition coil 90. Further, a groove 56 for forming the first diode group 40a, 40b, 40c and the second diode group 42a, 42b, 42c is formed on the bottom surface inside the case 50.

また、前記溝部56には前記第1のダイオード群40a,40b,40c及び前記第2のダイオード群42a,42b,42cの前記リード線44を挟んで固定するための略U字型のリード線固定部59を前記第1のダイオード群40a,40b,40c及び前記第2のダイオード群42a,42b,42cの各ダイオードの両端に1箇所ずつ、合計で12箇所形成し、当該リード線固定部59の前記リード線44の挿入口を面取りしている。さらに、前記溝部56は前記第1のダイオード群40a,40b,40cと前記第2のダイオード群42a,42b,42c、当該リード線固定部59が前記ケース50底面から出ない深さに形成されている。 Also, a substantially U-shaped lead wire fixing for fixing the lead wire 44 of the first diode group 40a, 40b, 40c and the second diode group 42a, 42b, 42c to the groove portion 56 is provided. A total of 12 portions 59 are formed at both ends of each diode of the first diode group 40a, 40b, 40c and the second diode group 42a, 42b, 42c. The insertion opening of the lead wire 44 is chamfered. Further, the groove portion 56 is formed to such a depth that the first diode groups 40a, 40b, and 40c, the second diode groups 42a, 42b, and 42c, and the lead wire fixing portion 59 do not protrude from the bottom surface of the case 50. Yes.

また、前記ケース50内側底面には外周溝57が形成され、当該外周溝57は前記第1のダイオード群40a,40b,40cと前記第2のダイオード群42a,42b,42c、前記リード線固定部59を備えた前記溝部56と前記それぞれのケース側2次高圧端子38、前記高圧端子36、前記リード線44の外周全周を囲う如く形成されている。さらに、当該外周溝57は前記溝部56の幅の3分の1前後の幅で形成され、当該外周溝57は前記溝部56の深さと等しい深さで形成されている。 An outer peripheral groove 57 is formed on the inner bottom surface of the case 50. The outer peripheral groove 57 includes the first diode groups 40a, 40b, and 40c, the second diode groups 42a, 42b, and 42c, and the lead wire fixing portion. It is formed so as to surround the outer periphery of the groove portion 56 provided with 59 and the respective case-side secondary high-voltage terminals 38, the high-voltage terminals 36, and the lead wires 44. Further, the outer peripheral groove 57 is formed with a width around one third of the width of the groove portion 56, and the outer peripheral groove 57 is formed with a depth equal to the depth of the groove portion 56.

また、前記ケース50内には前記第1の点火コイル80と前記第2の点火コイル90間のクラックの波及を防ぐために前記第1の点火コイル80には第1の隔壁55a及び前記第2の点火コイル90には第2の隔壁55bが形成されている。さらに、当該第1の隔壁55a及び当該第2の隔壁55bは前記第1の点火コイル80と前記第2の点火コイル90とを結ぶ直線上に形成されている。 Further, in the case 50, the first ignition coil 80 includes a first partition wall 55a and a second partition in order to prevent a crack from spreading between the first ignition coil 80 and the second ignition coil 90. A second partition wall 55b is formed in the ignition coil 90. Further, the first partition 55a and the second partition 55b are formed on a straight line connecting the first ignition coil 80 and the second ignition coil 90.

また、当該第1の隔壁55aは前記第1の点火コイル80の鉄芯クラックを封じ、前記鉄芯30の位置決めをするために前記第1の点火コイル80の前記鉄芯30の外周面に接する如く形成され、当該第2の隔壁55bは前記第2の点火コイル90の鉄芯クラックを封じ、前記鉄芯30の位置決めをするために前記第2の点火コイル90の前記鉄芯30の外周面に接する如く形成されている。さらに、前記第1の隔壁55a及び前記第2の隔壁55bは前記鉄芯30の前記ケース50底面から垂直方向の高さと等しい高さに形成され、前記第1の隔壁55aには前記第1のダイオード群40a、40b、40cの前記リード線44を通すためのスリット58が形成されている。 The first partition wall 55a contacts the outer peripheral surface of the iron core 30 of the first ignition coil 80 in order to seal the iron core crack of the first ignition coil 80 and position the iron core 30. The second partition wall 55b seals the iron core crack of the second ignition coil 90, and the outer peripheral surface of the iron core 30 of the second ignition coil 90 in order to position the iron core 30. It is formed so that it may touch. Further, the first partition wall 55a and the second partition wall 55b are formed at a height equal to the height in the vertical direction from the bottom surface of the case 50 of the iron core 30, and the first partition wall 55a includes the first partition wall 55a. A slit 58 for passing the lead wire 44 of the diode group 40a, 40b, 40c is formed.

また、前記ケース50内には前記点火装置70の電気的絶縁及び各部材の物理的固定を実現する如く熱硬化性のモールド樹脂60が充填されている。さらに、前記第1の点火コイル80及び前記第2の点火コイル90から出力される2次電圧は前記高圧端子36から前記プラグホール内に収容された導電部材を介して前記点火プラグへ供給されている。 The case 50 is filled with a thermosetting mold resin 60 so as to realize electrical insulation of the ignition device 70 and physical fixation of each member. Further, the secondary voltage output from the first ignition coil 80 and the second ignition coil 90 is supplied from the high voltage terminal 36 to the ignition plug through a conductive member accommodated in the plug hole. Yes.

なお、上記実施例の変形例として、前記第1の隔壁55a及び前記第2の隔壁55bは前記第1の点火コイル80と前記第2の点火コイル90とを結ぶ直線上であれば任意の高さに変更してもよいし、前記第1の隔壁55a及び前記第2の隔壁55bで異なる高さに形成してもよい。また、前記第1の隔壁55a及び前記第2の隔壁55bの枚数は設定事情によって任意に変更してもよいし、前記第1の隔壁55a及び前記第2の隔壁55bの形状及び形成位置は前記第1の点火コイル80と前記第2の点火コイル90とを結ぶ直線上であれば任意に変更してもよい。さらに、前記第1の隔壁55a及び前記第2の隔壁55bは別部品として成形して前記ケース50内に備えてもよい。 As a modification of the above embodiment, the first partition wall 55a and the second partition wall 55b may have any height as long as they are on a straight line connecting the first ignition coil 80 and the second ignition coil 90. The first partition 55a and the second partition 55b may be formed at different heights. Further, the number of the first partition walls 55a and the second partition walls 55b may be arbitrarily changed according to setting circumstances, and the shape and the formation position of the first partition walls 55a and the second partition walls 55b are the same as those described above. Any change may be made as long as it is on a straight line connecting the first ignition coil 80 and the second ignition coil 90. Further, the first partition wall 55a and the second partition wall 55b may be formed as separate parts and provided in the case 50.

また、前記スリット58の形成及び形成個数は、例えば前記第1のダイオード群40a,40b,40c及び前記第2のダイオード群42a,42b,42cの配置等の事情によって任意に変更してもよい。さらに、前記第1の隔壁55a及び前記第2の隔壁55bに前記モールド樹脂60を充填しやすくするための隙間を形成してもよい。 Further, the formation and number of the slits 58 may be arbitrarily changed according to circumstances such as the arrangement of the first diode groups 40a, 40b, and 40c and the second diode groups 42a, 42b, and 42c. Furthermore, a gap for facilitating filling of the mold resin 60 in the first partition wall 55a and the second partition wall 55b may be formed.

10:1次コイル
20:2次コイル
30:鉄芯
32:コネクタ
34:イグナイタ
36:高圧端子
38:ケース側2次高圧端子
40a,40b,40c:第1のダイオード
42a,42b,42c:第2のダイオード
44:リード線
50:ケース
52:ケース固定部
54:高圧タワー
55a:第1の隔壁
55b:第2の隔壁
56:溝部
57:外周溝
58:スリット
59:リード線固定部
60:モールド樹脂
70:点火装置
80:第1の点火コイル
90:第2の点火コイル
10: 1 primary coil
20: Secondary coil
30: Iron core
32: Connector
34: Igniter
36: High voltage terminal
38: Secondary high-voltage terminal on the case side
40a, 40b, 40c: first diode
42a, 42b, 42c: second diode
44: Lead wire
50: Case
52: Case fixing part
54: High pressure tower
55a: first partition
55b: Second partition
56: Groove
57: Outer groove
58: Slit
59: Lead wire fixing part
60: Mold resin
70: Ignition system
80: First ignition coil
90: Second ignition coil

Claims (3)

1次コイル,2次コイル及び鉄芯の構成部品を具備する第1の点火コイルと、前記1次コイル,前記2次コイル及び前記鉄芯と同等の構成部品を具備する第2の点火コイルと、電力及び電気信号を中継するコネクタと、点火プラグへ高電圧を供給する高圧端子と、前記双方の点火コイルが収容されるものであって且つ前記高電圧を整流するダイオード群が底面に配置されたケースと、前記第1の点火コイルと前記第2の点火コイルとの間に形成された2枚の隔壁と、前記ダイオード群を形成するリード線と、前記ケースのコイル収容部に充填されたモールド樹脂と、を備えた点火装置において、
前記2枚の隔壁の少なくとも一方には、前記リード線を配索させたスリットが形成されることを特徴とする点火装置。
A first ignition coil comprising primary coil, secondary coil and iron core components; a second ignition coil comprising components equivalent to the primary coil, secondary coil and iron core; a connector that relays power and electrical signals, the high voltage terminal for supplying a high voltage, diode group for rectifying and said high voltage ignition coil a shall be housed in the both are disposed on the bottom surface to the spark plug and cases, and two barrier ribs formed between the said first ignition coil second ignition coil, and the lead wire to form the group of diodes, which is filled in the coil receiving portion of the case In an ignition device comprising a mold resin,
At least one of the two partition walls is formed with a slit in which the lead wire is routed .
前記2枚の隔壁は、前記ケースの底面から前記ケースの開口面に向かって形成されていることを特徴とする請求項1に記載の点火装置。 The ignition device according to claim 1 , wherein the two partition walls are formed from a bottom surface of the case toward an opening surface of the case. 前記2枚の隔壁は、各々が前記第1の点火コイル又は前記第2の点火コイルの前記鉄芯に接して形成されていることを特徴とする請求項1又は請求項2に記載の点火装置。 The ignition device according to claim 1 or 2 , wherein each of the two partition walls is formed in contact with the iron core of the first ignition coil or the second ignition coil. .
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